Merge pull request #221 from boostorg/develop

Fixes for Boost 1.87

.clang-tidy

@@ -0,0 +1,172 @@
+---
+# Enable ALL the things! Except not really
+# misc-non-private-member-variables-in-classes: the options don't do anything
+Checks: "*,\
+  -readability-*,\
+  -readability-identifier-length,\
+  -google-readability-todo,\
+  -google-readability-namespace-comments,\
+  -google-readability-braces-around-statements,\
+  -hicpp-braces-around-statements,\
+  -hicpp-named-parameter,\
+  -hicpp-avoid-goto,\
+  -google-build-using-namespace,\
+  -altera-*,\
+  -fuchsia-*,\
+  fuchsia-multiple-inheritance,\
+  -llvm-namespace-comment,\
+  -llvm-header-guard,\
+  -llvm-include-order,\
+  -llvmlibc-*,\
+  -misc-non-private-member-variables-in-classes,\
+  -bugprone-use-after-move,\
+  -hicpp-invalid-access-moved,\
+  -misc-no-recursion,\
+  -cppcoreguidelines-pro-bounds-pointer-arithmetic,\
+  -cppcoreguidelines-avoid-magic-numbers,\
+  -cppcoreguidelines-pro-bounds-constant-array-index,\
+  -cppcoreguidelines-interfaces-global-init,\
+  -cppcoreguidelines-macro-usage,\
+  -cppcoreguidelines-avoid-goto,\
+  -cppcoreguidelines-non-private-member-variables-in-classes"
+WarningsAsErrors: ''
+CheckOptions:
+  - key: 'bugprone-argument-comment.StrictMode'
+    value: 'true'
+# Prefer using enum classes with 2 values for parameters instead of bools
+  - key: 'bugprone-argument-comment.CommentBoolLiterals'
+    value: 'true'
+  - key: 'bugprone-misplaced-widening-cast.CheckImplicitCasts'
+    value: 'true'
+  - key: 'bugprone-sizeof-expression.WarnOnSizeOfIntegerExpression'
+    value: 'true'
+  - key: 'bugprone-suspicious-string-compare.WarnOnLogicalNotComparison'
+    value: 'true'
+  - key: 'readability-simplify-boolean-expr.ChainedConditionalReturn'
+    value: 'true'
+  - key: 'readability-simplify-boolean-expr.ChainedConditionalAssignment'
+    value: 'true'
+  - key: 'readability-uniqueptr-delete-release.PreferResetCall'
+    value: 'true'
+  - key: 'cppcoreguidelines-init-variables.MathHeader'
+    value: '<cmath>'
+  - key: 'cppcoreguidelines-narrowing-conversions.PedanticMode'
+    value: 'true'
+  - key: 'readability-else-after-return.WarnOnUnfixable'
+    value: 'true'
+  - key: 'readability-else-after-return.WarnOnConditionVariables'
+    value: 'true'
+  - key: 'readability-inconsistent-declaration-parameter-name.Strict'
+    value: 'true'
+  - key: 'readability-qualified-auto.AddConstToQualified'
+    value: 'true'
+  - key: 'readability-redundant-access-specifiers.CheckFirstDeclaration'
+    value: 'true'
+# These seem to be the most common identifier styles
+  - key: 'readability-identifier-naming.AbstractClassCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ClassCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ClassConstantCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ClassMemberCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ClassMethodCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ConstantCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ConstantMemberCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ConstantParameterCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ConstantPointerParameterCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ConstexprFunctionCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ConstexprMethodCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ConstexprVariableCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.EnumCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.EnumConstantCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.FunctionCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.GlobalConstantCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.GlobalConstantPointerCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.GlobalFunctionCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.GlobalPointerCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.GlobalVariableCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.InlineNamespaceCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.LocalConstantCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.LocalConstantPointerCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.LocalPointerCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.LocalVariableCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.MacroDefinitionCase'
+    value: 'UPPER_CASE'
+  - key: 'readability-identifier-naming.MemberCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.MethodCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.NamespaceCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ParameterCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ParameterPackCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.PointerParameterCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.PrivateMemberCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.PrivateMemberPrefix'
+    value: 'm_'
+  - key: 'readability-identifier-naming.PrivateMethodCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ProtectedMemberCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ProtectedMemberPrefix'
+    value: 'm_'
+  - key: 'readability-identifier-naming.ProtectedMethodCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.PublicMemberCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.PublicMethodCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ScopedEnumConstantCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.StaticConstantCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.StaticVariableCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.StructCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.TemplateParameterCase'
+    value: 'CamelCase'
+  - key: 'readability-identifier-naming.TemplateTemplateParameterCase'
+    value: 'CamelCase'
+  - key: 'readability-identifier-naming.TypeAliasCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.TypedefCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.TypeTemplateParameterCase'
+    value: 'CamelCase'
+  - key: 'readability-identifier-naming.UnionCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.ValueTemplateParameterCase'
+    value: 'CamelCase'
+  - key: 'readability-identifier-naming.VariableCase'
+    value: 'lower_case'
+  - key: 'readability-identifier-naming.VirtualMethodCase'
+    value: 'lower_case'
+...

.codecov.yml

@@ -0,0 +1,22 @@
+codecov:
+  max_report_age: off
+  require_ci_to_pass: yes
+  notify:
+    after_n_builds: 1
+    wait_for_ci: yes
+
+ignore:
+  - "benchmarks/cpp/asio/*"
+  - "example/*"
+  - "tests/*"
+  - "/usr/*"
+  - "**/boost/*"
+
+parsers:
+  gcov:
+    branch_detection:
+      conditional: no
+      loop: no
+      method: no
+      macro: no
+

.github/workflows/ci.yml

@@ -0,0 +1,313 @@
+# CI script to verify that CMake and B2 builds work.
+# B2 builds include only tests that don't require a DB server, to avoid race conditions.
+# CMake tests include the actual project tests and all the CMake integration workflows
+#   recommended by Boost.CI.
+# Windows CMake jobs build the code but don't run the tests,
+#   since we don't have a way to set up a Redis server on Windows (yet).
+# Subcommands are implemented by the tools/ci.py script in a platform-independent manner.
+
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  windows-cmake:
+    name: "CMake ${{matrix.toolset}} ${{matrix.build-type}} C++${{matrix.cxxstd}}"
+    runs-on: ${{matrix.os}}
+    defaults:
+      run:
+        shell: bash
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - { toolset: msvc-14.2, os: windows-2019, generator: "Visual Studio 16 2019", cxxstd: '17', build-type: 'Debug',   build-shared-libs: 1 }
+          - { toolset: msvc-14.2, os: windows-2019, generator: "Visual Studio 16 2019", cxxstd: '17', build-type: 'Release', build-shared-libs: 0 }
+          - { toolset: msvc-14.3, os: windows-2022, generator: "Visual Studio 17 2022", cxxstd: '20', build-type: 'Debug',   build-shared-libs: 0 }
+          - { toolset: msvc-14.3, os: windows-2022, generator: "Visual Studio 17 2022", cxxstd: '20', build-type: 'Release', build-shared-libs: 1 }
+    env:
+      CMAKE_BUILD_PARALLEL_LEVEL: 4
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+
+    - name: Setup Boost
+      run: python3 tools/ci.py setup-boost --source-dir=$(pwd)
+
+    - name: Build a Boost distribution using B2
+      run: |
+        python3 tools/ci.py build-b2-distro \
+          --toolset ${{ matrix.toolset }}
+
+    - name: Build a Boost distribution using CMake
+      run: |
+        python3 tools/ci.py build-cmake-distro \
+          --build-type ${{ matrix.build-type }} \
+          --cxxstd ${{ matrix.cxxstd }} \
+          --toolset ${{ matrix.toolset }} \
+          --generator "${{ matrix.generator }}" \
+          --build-shared-libs ${{ matrix.build-shared-libs }}
+        
+    - name: Build the project tests
+      run: |
+        python3 tools/ci.py build-cmake-standalone-tests \
+          --build-type ${{ matrix.build-type }} \
+          --cxxstd ${{ matrix.cxxstd }} \
+          --toolset ${{ matrix.toolset }} \
+          --generator "${{ matrix.generator }}" \
+          --build-shared-libs ${{ matrix.build-shared-libs }}
+
+    # # TODO: re-enable this when a Redis server is available for this job
+    # - name: Run the project tests
+    #   run: |
+    #     python3 tools/ci.py run-cmake-standalone-tests \
+    #       --build-type ${{ matrix.build-type }}
+
+    - name: Run add_subdirectory tests
+      run: |
+        python3 tools/ci.py run-cmake-add-subdirectory-tests \
+          --build-type ${{ matrix.build-type }} \
+          --cxxstd ${{ matrix.cxxstd }} \
+          --toolset ${{ matrix.toolset }} \
+          --generator "${{ matrix.generator }}" \
+          --build-shared-libs ${{ matrix.build-shared-libs }}
+
+    - name: Run find_package tests with the built cmake distribution
+      run: |
+        python3 tools/ci.py run-cmake-find-package-tests \
+          --build-type ${{ matrix.build-type }} \
+          --cxxstd ${{ matrix.cxxstd }} \
+          --toolset ${{ matrix.toolset }} \
+          --generator "${{ matrix.generator }}" \
+          --build-shared-libs ${{ matrix.build-shared-libs }}
+
+    - name: Run find_package tests with the built b2 distribution
+      run: |
+        python3 tools/ci.py run-cmake-b2-find-package-tests \
+          --build-type ${{ matrix.build-type }} \
+          --cxxstd ${{ matrix.cxxstd }} \
+          --toolset ${{ matrix.toolset }} \
+          --generator "${{ matrix.generator }}" \
+          --build-shared-libs ${{ matrix.build-shared-libs }}
+
+  windows-b2:
+    name: "B2 ${{matrix.toolset}}"
+    runs-on: ${{matrix.os}}
+    defaults:
+      run:
+        shell: bash
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - { toolset: msvc-14.2, os: windows-2019 }
+          - { toolset: msvc-14.3, os: windows-2022 }
+    env:
+      OPENSSL_ROOT: "C:\\Program Files\\OpenSSL"
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+
+    - name: Setup user-config.jam
+      run: cp tools/user-config.jam "${HOMEDRIVE}${HOMEPATH}/"
+
+    - name: Setup Boost
+      run: python3 tools/ci.py setup-boost --source-dir=$(pwd)
+    
+    - name: Build and run project tests using B2
+      run: |
+        python3 tools/ci.py run-b2-tests \
+          --toolset ${{ matrix.toolset }} \
+          --cxxstd 17,20 \
+          --variant debug,release
+
+  posix-cmake:
+    name: "CMake ${{ matrix.toolset }} ${{ matrix.cxxstd }} ${{ matrix.build-type }} ${{ matrix.cxxflags }}"
+    defaults:
+      run:
+        shell: bash
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - toolset: gcc-11
+            install: g++-11
+            os: ubuntu-latest
+            cxxstd: '17'
+            build-type: 'Debug'
+            ldflags: ''
+
+          - toolset: gcc-11
+            install: g++-11
+            os: ubuntu-latest
+            cxxstd: '20'
+            build-type: 'Release'
+            ldflags: ''
+
+          - toolset: clang-11
+            install: clang-11
+            os: ubuntu-latest
+            cxxstd: '17'
+            build-type: 'Debug'
+            ldflags: ''
+
+          - toolset: clang-11
+            install: clang-11
+            os: ubuntu-latest
+            cxxstd: '20'
+            build-type: 'Debug'
+            ldflags: ''
+
+          - toolset: clang-13
+            install: clang-13
+            os: ubuntu-latest
+            cxxstd: '17'
+            build-type: 'Release'
+            ldflags: ''
+
+          - toolset: clang-13
+            install: clang-13
+            os: ubuntu-latest
+            cxxstd: '20'
+            build-type: 'Release'
+            ldflags: ''
+
+          - toolset: clang-14
+            install: 'clang-14 libc++-14-dev libc++abi-14-dev'
+            os: ubuntu-latest
+            cxxstd: '17'
+            build-type: 'Debug'
+            cxxflags: '-stdlib=libc++'
+            ldflags: '-lc++'
+
+          - toolset: clang-14
+            install: 'clang-14 libc++-14-dev libc++abi-14-dev'
+            os: ubuntu-latest
+            cxxstd: '20'
+            build-type: 'Release'
+            cxxflags: '-stdlib=libc++'
+            ldflags: '-lc++'
+
+    runs-on: ${{ matrix.os }}
+    env:
+      CXXFLAGS: ${{matrix.cxxflags}} -Wall -Wextra
+      LDFLAGS:  ${{matrix.ldflags}}
+      CMAKE_BUILD_PARALLEL_LEVEL: 4
+    
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    
+    - name: Set up the required containers
+      run: |
+        docker compose -f tools/docker-compose.yml up -d --wait || (docker compose logs; exit 1)
+      
+    - name: Install dependencies
+      run: |
+        docker exec builder apt-get update
+        docker exec builder apt-get -y --no-install-recommends install \
+          git \
+          g++ \
+          libssl-dev \
+          make \
+          ca-certificates \
+          cmake \
+          protobuf-compiler \
+          python3 \
+          ${{ matrix.install }}
+
+    - name: Setup Boost
+      run: docker exec builder /boost-redis/tools/ci.py setup-boost --source-dir=/boost-redis
+
+    - name: Build a Boost distribution using B2
+      run: |
+        docker exec builder /boost-redis/tools/ci.py build-b2-distro \
+          --toolset ${{ matrix.toolset }}
+
+    - name: Build a Boost distribution using CMake
+      run: |
+        docker exec builder /boost-redis/tools/ci.py build-cmake-distro \
+          --build-type ${{ matrix.build-type }} \
+          --cxxstd ${{ matrix.cxxstd }} \
+          --toolset ${{ matrix.toolset }}
+
+    - name: Build the project tests
+      run: |
+        docker exec builder /boost-redis/tools/ci.py build-cmake-standalone-tests \
+          --build-type ${{ matrix.build-type }} \
+          --cxxstd ${{ matrix.cxxstd }} \
+          --toolset ${{ matrix.toolset }}
+  
+    - name: Run the project tests
+      run: |
+        docker exec builder /boost-redis/tools/ci.py run-cmake-standalone-tests \
+          --build-type ${{ matrix.build-type }}
+
+    - name: Run add_subdirectory tests
+      run: |
+        docker exec builder /boost-redis/tools/ci.py run-cmake-add-subdirectory-tests \
+          --build-type ${{ matrix.build-type }} \
+          --cxxstd ${{ matrix.cxxstd }} \
+          --toolset ${{ matrix.toolset }}
+
+    - name: Run find_package tests with the built cmake distribution
+      run: |
+        docker exec builder /boost-redis/tools/ci.py run-cmake-find-package-tests \
+          --build-type ${{ matrix.build-type }} \
+          --cxxstd ${{ matrix.cxxstd }} \
+          --toolset ${{ matrix.toolset }}
+
+    - name: Run find_package tests with the built b2 distribution
+      run: |
+        docker exec builder /boost-redis/tools/ci.py run-cmake-b2-find-package-tests \
+          --build-type ${{ matrix.build-type }} \
+          --cxxstd ${{ matrix.cxxstd }} \
+          --toolset ${{ matrix.toolset }}
+
+  posix-b2:
+    name: "B2 ${{ matrix.toolset }}"
+    defaults:
+      run:
+        shell: bash
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - toolset: gcc-11
+            install: g++-11
+            cxxstd: "11,17,20" # Having C++11 shouldn't break the build
+            os: ubuntu-latest
+            container: ubuntu:22.04
+          - toolset: clang-14
+            install: clang-14
+            os: ubuntu-latest
+            container: ubuntu:22.04
+            cxxstd: "17,20"
+    runs-on: ${{ matrix.os }}
+    container: ${{matrix.container}}
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+
+    - name: Setup container environment
+      if: matrix.container
+      run: |
+        apt-get update
+        apt-get -y install sudo python3 git g++ libssl-dev
+
+    - name: Install dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get -y install python3 ${{ matrix.install }}
+
+    - name: Setup Boost
+      run: ./tools/ci.py setup-boost --source-dir=$(pwd)
+    
+    - name: Build and run project tests using B2
+      run: |
+        python3 tools/ci.py run-b2-tests \
+          --toolset ${{ matrix.toolset }} \
+          --cxxstd ${{ matrix.cxxstd }} \
+          --variant debug,release

BUILD_STATUS.md

@@ -0,0 +1,4 @@
+Branch          | GH Actions | codecov.io |
+:-------------: | ---------- | ---------- |
+[`master`](https://github.com/mzimbres/aedis/tree/master) | [![CI](https://github.com/mzimbres/aedis/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/mzimbres/aedis/actions/workflows/ci.yml) | [![codecov](https://codecov.io/gh/mzimbres/aedis/branch/master/graph/badge.svg)](https://codecov.io/gh/mzimbres/aedis/branch/master)
+

CMakeLists.txt

@@ -0,0 +1,141 @@
+cmake_minimum_required(VERSION 3.8...3.20)
+
+# determine whether it's main/root project
+# or being built under another project.
+if (NOT DEFINED BOOST_REDIS_MAIN_PROJECT)
+  set(BOOST_REDIS_MAIN_PROJECT OFF)
+  if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
+    set(BOOST_REDIS_MAIN_PROJECT ON)
+  endif()
+endif()
+
+project(boost_redis VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
+
+# Library
+add_library(boost_redis INTERFACE)
+add_library(Boost::redis ALIAS boost_redis)
+target_include_directories(boost_redis INTERFACE include)
+target_compile_features(boost_redis INTERFACE cxx_std_17)
+
+# Dependencies
+if (BOOST_REDIS_MAIN_PROJECT)
+  # TODO: Understand why we have to list all dependencies below
+  # instead of
+  #set(BOOST_INCLUDE_LIBRARIES redis)
+  #set(BOOST_EXCLUDE_LIBRARIES redis)
+  #add_subdirectory(../.. boostorg/boost EXCLUDE_FROM_ALL)
+
+  set(deps
+    system
+    assert
+    config
+    throw_exception
+    asio
+    variant2
+    mp11
+    winapi
+    predef
+    align
+    context
+    core
+    static_assert
+    pool
+    date_time
+    smart_ptr
+    exception
+    integer
+    move
+    type_traits
+    algorithm
+    utility
+    io
+    lexical_cast
+    numeric/conversion
+    mpl
+    range
+    tokenizer
+    tuple
+    array
+    bind
+    concept_check
+    function
+    iterator
+    regex
+    unordered
+    preprocessor
+    container
+    conversion
+    container_hash
+    detail
+    optional
+    function_types
+    fusion
+    intrusive
+    describe
+    typeof
+    functional
+    test
+    json
+    endian
+  )
+
+  foreach(dep IN LISTS deps)
+    add_subdirectory(../${dep} boostorg/${dep})
+  endforeach()
+
+  find_package(Threads REQUIRED)
+  find_package(OpenSSL REQUIRED)
+  target_link_libraries(boost_redis
+    INTERFACE
+      Boost::system
+      Boost::asio
+      Threads::Threads
+      OpenSSL::Crypto
+      OpenSSL::SSL
+  )
+else()
+  # If we're in the superproject or called from add_subdirectory,
+  # Boost dependencies should be already available.
+  # If other dependencies are not found, we bail out
+  find_package(Threads)
+  if(NOT Threads_FOUND)
+    message(STATUS "Boost.Redis has been disabled, because the required package Threads hasn't been found")
+    return()
+  endif()
+  find_package(OpenSSL)
+  if(NOT OpenSSL_FOUND)
+    message(STATUS "Boost.Redis has been disabled, because the required package OpenSSL hasn't been found")
+    return()
+  endif()
+
+  # This is generated by boostdep
+  target_link_libraries(boost_redis
+    INTERFACE
+      Boost::asio
+      Boost::assert
+      Boost::core
+      Boost::mp11
+      Boost::system
+      Boost::throw_exception
+      Threads::Threads
+      OpenSSL::Crypto
+      OpenSSL::SSL
+  )
+endif()
+
+# Enable testing. If we're being called from the superproject, this has already been done
+if (BOOST_REDIS_MAIN_PROJECT)
+  include(CTest)
+endif()
+
+# Most tests require a running Redis server, so we only run them if we're the main project
+if(BOOST_REDIS_MAIN_PROJECT AND BUILD_TESTING)
+  # Tests and common utilities
+  add_subdirectory(test)
+
+  # Benchmarks. Build them with tests to prevent code rotting
+  add_subdirectory(benchmarks)
+
+  # Examples
+  add_subdirectory(example)
+endif()

CMakePresets.json

@@ -0,0 +1,178 @@
+{
+  "version": 2,
+  "cmakeMinimumRequired": {
+    "major": 3,
+    "minor": 14,
+    "patch": 0
+  },
+  "configurePresets": [
+    {
+      "name": "cmake-pedantic",
+      "hidden": true,
+      "warnings": {
+        "dev": true,
+        "deprecated": true,
+        "uninitialized": false,
+        "unusedCli": true,
+        "systemVars": false
+      },
+      "errors": {
+        "dev": true,
+        "deprecated": true
+      }
+    },
+    {
+      "name": "coverage",
+      "generator": "Unix Makefiles",
+      "hidden": false,
+      "inherits": ["cmake-pedantic"],
+      "binaryDir": "${sourceDir}/build/coverage",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Coverage",
+        "CMAKE_CXX_EXTENSIONS": "OFF",
+        "CMAKE_CXX_FLAGS": "-Wall -Wextra",
+        "CMAKE_CXX_FLAGS_COVERAGE": "-Og -g --coverage -fkeep-inline-functions -fkeep-static-functions",
+        "CMAKE_CXX_STANDARD_REQUIRED": "ON",
+        "CMAKE_EXE_LINKER_FLAGS_COVERAGE": "--coverage",
+        "CMAKE_SHARED_LINKER_FLAGS_COVERAGE": "--coverage",
+        "PROJECT_BINARY_DIR": "${sourceDir}/build/coverage",
+        "COVERAGE_HTML_COMMAND": ""
+      }
+    },
+    {
+      "name": "g++-11",
+      "generator": "Unix Makefiles",
+      "hidden": false,
+      "inherits": ["cmake-pedantic"],
+      "binaryDir": "${sourceDir}/build/g++-11",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Debug",
+        "CMAKE_CXX_EXTENSIONS": "OFF",
+        "CMAKE_CXX_FLAGS": "-Wall -Wextra -fsanitize=address",
+        "CMAKE_CXX_COMPILER": "g++-11",
+        "CMAKE_SHARED_LINKER_FLAGS": "-fsanitize=address",
+        "CMAKE_CXX_STANDARD_REQUIRED": "ON",
+        "PROJECT_BINARY_DIR": "${sourceDir}/build/g++-11"
+      }
+    },
+    {
+      "name": "g++-11-release",
+      "generator": "Unix Makefiles",
+      "hidden": false,
+      "inherits": ["cmake-pedantic"],
+      "binaryDir": "${sourceDir}/build/g++-11-release",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Release",
+        "CMAKE_CXX_EXTENSIONS": "OFF",
+        "CMAKE_CXX_FLAGS": "-Wall -Wextra",
+        "CMAKE_CXX_COMPILER": "g++-11",
+        "CMAKE_SHARED_LINKER_FLAGS": "",
+        "CMAKE_CXX_STANDARD_REQUIRED": "ON",
+        "PROJECT_BINARY_DIR": "${sourceDir}/build/g++-11-release"
+      }
+    },
+    {
+      "name": "clang++-13",
+      "generator": "Unix Makefiles",
+      "hidden": false,
+      "inherits": ["cmake-pedantic"],
+      "binaryDir": "${sourceDir}/build/clang++-13",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Debug",
+        "CMAKE_CXX_EXTENSIONS": "OFF",
+        "CMAKE_CXX_FLAGS": "-Wall -Wextra -fsanitize=address",
+        "CMAKE_CXX_COMPILER": "clang++-13",
+        "CMAKE_SHARED_LINKER_FLAGS": "-fsanitize=address",
+        "CMAKE_CXX_STANDARD_REQUIRED": "ON",
+        "PROJECT_BINARY_DIR": "${sourceDir}/build/clang++-13"
+      }
+    },
+    {
+      "name": "clang++-14",
+      "generator": "Unix Makefiles",
+      "hidden": false,
+      "inherits": ["cmake-pedantic"],
+      "binaryDir": "${sourceDir}/build/clang++-14",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Debug",
+        "CMAKE_CXX_EXTENSIONS": "OFF",
+        "CMAKE_CXX_FLAGS": "-Wall -Wextra -fsanitize=address",
+        "CMAKE_CXX_COMPILER": "clang++-14",
+        "CMAKE_SHARED_LINKER_FLAGS": "-fsanitize=address",
+        "CMAKE_CXX_STANDARD_REQUIRED": "ON",
+        "PROJECT_BINARY_DIR": "${sourceDir}/build/clang++-14"
+      }
+    },
+    {
+      "name": "libc++-14-cpp17",
+      "generator": "Unix Makefiles",
+      "hidden": false,
+      "inherits": ["cmake-pedantic"],
+      "binaryDir": "${sourceDir}/build/libc++-14-cpp17",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Debug",
+        "CMAKE_CXX_EXTENSIONS": "OFF",
+        "CMAKE_CXX_FLAGS": "-Wall -Wextra -stdlib=libc++ -std=c++17",
+        "CMAKE_EXE_LINKER_FLAGS": "-lc++",
+        "CMAKE_CXX_COMPILER": "clang++-14",
+        "CMAKE_SHARED_LINKER_FLAGS": "",
+        "CMAKE_CXX_STANDARD_REQUIRED": "ON",
+        "PROJECT_BINARY_DIR": "${sourceDir}/build/libc++-14-cpp17"
+      }
+    },
+    {
+      "name": "libc++-14-cpp20",
+      "generator": "Unix Makefiles",
+      "hidden": false,
+      "inherits": ["cmake-pedantic"],
+      "binaryDir": "${sourceDir}/build/libc++-14-cpp20",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Debug",
+        "CMAKE_CXX_EXTENSIONS": "OFF",
+        "CMAKE_CXX_FLAGS": "-Wall -Wextra -stdlib=libc++ -std=c++17",
+        "CMAKE_EXE_LINKER_FLAGS": "-lc++",
+        "CMAKE_CXX_COMPILER": "clang++-14",
+        "CMAKE_SHARED_LINKER_FLAGS": "",
+        "CMAKE_CXX_STANDARD_REQUIRED": "ON",
+        "PROJECT_BINARY_DIR": "${sourceDir}/build/libc++-14-cpp20"
+      }
+    },
+    {
+      "name": "clang-tidy",
+      "generator": "Unix Makefiles",
+      "hidden": false,
+      "inherits": ["g++-11"],
+      "binaryDir": "${sourceDir}/build/clang-tidy",
+      "cacheVariables": {
+        "CMAKE_CXX_CLANG_TIDY": "clang-tidy;--header-filter=${sourceDir}/include/*",
+        "CMAKE_CXX_STANDARD": "20"
+      }
+    }
+  ],
+  "buildPresets": [
+     { "name": "coverage", "configurePreset": "coverage" },
+     { "name": "g++-11", "configurePreset": "g++-11" },
+     { "name": "g++-11-release", "configurePreset": "g++-11-release" },
+     { "name": "clang++-13", "configurePreset": "clang++-13" },
+     { "name": "clang++-14", "configurePreset": "clang++-14" },
+     { "name": "libc++-14-cpp17", "configurePreset": "libc++-14-cpp17" },
+     { "name": "libc++-14-cpp20", "configurePreset": "libc++-14-cpp20" },
+     { "name": "clang-tidy", "configurePreset": "clang-tidy" }
+  ],
+  "testPresets": [
+     {
+       "name": "test",
+       "hidden": true,
+       "output": {"outputOnFailure": true},
+       "execution": {"noTestsAction": "error", "stopOnFailure": true}
+     },
+     { "name": "coverage",        "configurePreset": "coverage",         "inherits": ["test"] },
+     { "name": "g++-11",          "configurePreset": "g++-11",           "inherits": ["test"] },
+     { "name": "g++-11-release",  "configurePreset": "g++-11-release",   "inherits": ["test"] },
+     { "name": "clang++-13",      "configurePreset": "clang++-13",       "inherits": ["test"] },
+     { "name": "clang++-14",      "configurePreset": "clang++-14",       "inherits": ["test"] },
+     { "name": "libc++-14-cpp17", "configurePreset": "libc++-14-cpp17",  "inherits": ["test"] },
+     { "name": "libc++-14-cpp20", "configurePreset": "libc++-14-cpp20",  "inherits": ["test"] },
+     { "name": "clang-tidy",      "configurePreset": "clang-tidy",       "inherits": ["test"] }
+  ]
+}

INSTALL

@@ -1 +0,0 @@
-See file:///tmp/aedis/html/installation.html

LICENSE

@@ -1,373 +0,0 @@
-Mozilla Public License Version 2.0
-==================================
-
-1. Definitions
---------------
-
-1.1. "Contributor"
-    means each individual or legal entity that creates, contributes to
-    the creation of, or owns Covered Software.
-
-1.2. "Contributor Version"
-    means the combination of the Contributions of others (if any) used
-    by a Contributor and that particular Contributor's Contribution.
-
-1.3. "Contribution"
-    means Covered Software of a particular Contributor.
-
-1.4. "Covered Software"
-    means Source Code Form to which the initial Contributor has attached
-    the notice in Exhibit A, the Executable Form of such Source Code
-    Form, and Modifications of such Source Code Form, in each case
-    including portions thereof.
-
-1.5. "Incompatible With Secondary Licenses"
-    means
-
-    (a) that the initial Contributor has attached the notice described
-        in Exhibit B to the Covered Software; or
-
-    (b) that the Covered Software was made available under the terms of
-        version 1.1 or earlier of the License, but not also under the
-        terms of a Secondary License.
-
-1.6. "Executable Form"
-    means any form of the work other than Source Code Form.
-
-1.7. "Larger Work"
-    means a work that combines Covered Software with other material, in
-    a separate file or files, that is not Covered Software.
-
-1.8. "License"
-    means this document.
-
-1.9. "Licensable"
-    means having the right to grant, to the maximum extent possible,
-    whether at the time of the initial grant or subsequently, any and
-    all of the rights conveyed by this License.
-
-1.10. "Modifications"
-    means any of the following:
-
-    (a) any file in Source Code Form that results from an addition to,
-        deletion from, or modification of the contents of Covered
-        Software; or
-
-    (b) any new file in Source Code Form that contains any Covered
-        Software.
-
-1.11. "Patent Claims" of a Contributor
-    means any patent claim(s), including without limitation, method,
-    process, and apparatus claims, in any patent Licensable by such
-    Contributor that would be infringed, but for the grant of the
-    License, by the making, using, selling, offering for sale, having
-    made, import, or transfer of either its Contributions or its
-    Contributor Version.
-
-1.12. "Secondary License"
-    means either the GNU General Public License, Version 2.0, the GNU
-    Lesser General Public License, Version 2.1, the GNU Affero General
-    Public License, Version 3.0, or any later versions of those
-    licenses.
-
-1.13. "Source Code Form"
-    means the form of the work preferred for making modifications.
-
-1.14. "You" (or "Your")
-    means an individual or a legal entity exercising rights under this
-    License. For legal entities, "You" includes any entity that
-    controls, is controlled by, or is under common control with You. For
-    purposes of this definition, "control" means (a) the power, direct
-    or indirect, to cause the direction or management of such entity,
-    whether by contract or otherwise, or (b) ownership of more than
-    fifty percent (50%) of the outstanding shares or beneficial
-    ownership of such entity.
-
-2. License Grants and Conditions
---------------------------------
-
-2.1. Grants
-
-Each Contributor hereby grants You a world-wide, royalty-free,
-non-exclusive license:
-
-(a) under intellectual property rights (other than patent or trademark)
-    Licensable by such Contributor to use, reproduce, make available,
-    modify, display, perform, distribute, and otherwise exploit its
-    Contributions, either on an unmodified basis, with Modifications, or
-    as part of a Larger Work; and
-
-(b) under Patent Claims of such Contributor to make, use, sell, offer
-    for sale, have made, import, and otherwise transfer either its
-    Contributions or its Contributor Version.
-
-2.2. Effective Date
-
-The licenses granted in Section 2.1 with respect to any Contribution
-become effective for each Contribution on the date the Contributor first
-distributes such Contribution.
-
-2.3. Limitations on Grant Scope
-
-The licenses granted in this Section 2 are the only rights granted under
-this License. No additional rights or licenses will be implied from the
-distribution or licensing of Covered Software under this License.
-Notwithstanding Section 2.1(b) above, no patent license is granted by a
-Contributor:
-
-(a) for any code that a Contributor has removed from Covered Software;
-    or
-
-(b) for infringements caused by: (i) Your and any other third party's
-    modifications of Covered Software, or (ii) the combination of its
-    Contributions with other software (except as part of its Contributor
-    Version); or
-
-(c) under Patent Claims infringed by Covered Software in the absence of
-    its Contributions.
-
-This License does not grant any rights in the trademarks, service marks,
-or logos of any Contributor (except as may be necessary to comply with
-the notice requirements in Section 3.4).
-
-2.4. Subsequent Licenses
-
-No Contributor makes additional grants as a result of Your choice to
-distribute the Covered Software under a subsequent version of this
-License (see Section 10.2) or under the terms of a Secondary License (if
-permitted under the terms of Section 3.3).
-
-2.5. Representation
-
-Each Contributor represents that the Contributor believes its
-Contributions are its original creation(s) or it has sufficient rights
-to grant the rights to its Contributions conveyed by this License.
-
-2.6. Fair Use
-
-This License is not intended to limit any rights You have under
-applicable copyright doctrines of fair use, fair dealing, or other
-equivalents.
-
-2.7. Conditions
-
-Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
-in Section 2.1.
-
-3. Responsibilities
--------------------
-
-3.1. Distribution of Source Form
-
-All distribution of Covered Software in Source Code Form, including any
-Modifications that You create or to which You contribute, must be under
-the terms of this License. You must inform recipients that the Source
-Code Form of the Covered Software is governed by the terms of this
-License, and how they can obtain a copy of this License. You may not
-attempt to alter or restrict the recipients' rights in the Source Code
-Form.
-
-3.2. Distribution of Executable Form
-
-If You distribute Covered Software in Executable Form then:
-
-(a) such Covered Software must also be made available in Source Code
-    Form, as described in Section 3.1, and You must inform recipients of
-    the Executable Form how they can obtain a copy of such Source Code
-    Form by reasonable means in a timely manner, at a charge no more
-    than the cost of distribution to the recipient; and
-
-(b) You may distribute such Executable Form under the terms of this
-    License, or sublicense it under different terms, provided that the
-    license for the Executable Form does not attempt to limit or alter
-    the recipients' rights in the Source Code Form under this License.
-
-3.3. Distribution of a Larger Work
-
-You may create and distribute a Larger Work under terms of Your choice,
-provided that You also comply with the requirements of this License for
-the Covered Software. If the Larger Work is a combination of Covered
-Software with a work governed by one or more Secondary Licenses, and the
-Covered Software is not Incompatible With Secondary Licenses, this
-License permits You to additionally distribute such Covered Software
-under the terms of such Secondary License(s), so that the recipient of
-the Larger Work may, at their option, further distribute the Covered
-Software under the terms of either this License or such Secondary
-License(s).
-
-3.4. Notices
-
-You may not remove or alter the substance of any license notices
-(including copyright notices, patent notices, disclaimers of warranty,
-or limitations of liability) contained within the Source Code Form of
-the Covered Software, except that You may alter any license notices to
-the extent required to remedy known factual inaccuracies.
-
-3.5. Application of Additional Terms
-
-You may choose to offer, and to charge a fee for, warranty, support,
-indemnity or liability obligations to one or more recipients of Covered
-Software. However, You may do so only on Your own behalf, and not on
-behalf of any Contributor. You must make it absolutely clear that any
-such warranty, support, indemnity, or liability obligation is offered by
-You alone, and You hereby agree to indemnify every Contributor for any
-liability incurred by such Contributor as a result of warranty, support,
-indemnity or liability terms You offer. You may include additional
-disclaimers of warranty and limitations of liability specific to any
-jurisdiction.
-
-4. Inability to Comply Due to Statute or Regulation
----------------------------------------------------
-
-If it is impossible for You to comply with any of the terms of this
-License with respect to some or all of the Covered Software due to
-statute, judicial order, or regulation then You must: (a) comply with
-the terms of this License to the maximum extent possible; and (b)
-describe the limitations and the code they affect. Such description must
-be placed in a text file included with all distributions of the Covered
-Software under this License. Except to the extent prohibited by statute
-or regulation, such description must be sufficiently detailed for a
-recipient of ordinary skill to be able to understand it.
-
-5. Termination
---------------
-
-5.1. The rights granted under this License will terminate automatically
-if You fail to comply with any of its terms. However, if You become
-compliant, then the rights granted under this License from a particular
-Contributor are reinstated (a) provisionally, unless and until such
-Contributor explicitly and finally terminates Your grants, and (b) on an
-ongoing basis, if such Contributor fails to notify You of the
-non-compliance by some reasonable means prior to 60 days after You have
-come back into compliance. Moreover, Your grants from a particular
-Contributor are reinstated on an ongoing basis if such Contributor
-notifies You of the non-compliance by some reasonable means, this is the
-first time You have received notice of non-compliance with this License
-from such Contributor, and You become compliant prior to 30 days after
-Your receipt of the notice.
-
-5.2. If You initiate litigation against any entity by asserting a patent
-infringement claim (excluding declaratory judgment actions,
-counter-claims, and cross-claims) alleging that a Contributor Version
-directly or indirectly infringes any patent, then the rights granted to
-You by any and all Contributors for the Covered Software under Section
-2.1 of this License shall terminate.
-
-5.3. In the event of termination under Sections 5.1 or 5.2 above, all
-end user license agreements (excluding distributors and resellers) which
-have been validly granted by You or Your distributors under this License
-prior to termination shall survive termination.
-
-************************************************************************
-*                                                                      *
-*  6. Disclaimer of Warranty                                           *
-*  -------------------------                                           *
-*                                                                      *
-*  Covered Software is provided under this License on an "as is"       *
-*  basis, without warranty of any kind, either expressed, implied, or  *
-*  statutory, including, without limitation, warranties that the       *
-*  Covered Software is free of defects, merchantable, fit for a        *
-*  particular purpose or non-infringing. The entire risk as to the     *
-*  quality and performance of the Covered Software is with You.        *
-*  Should any Covered Software prove defective in any respect, You     *
-*  (not any Contributor) assume the cost of any necessary servicing,   *
-*  repair, or correction. This disclaimer of warranty constitutes an   *
-*  essential part of this License. No use of any Covered Software is   *
-*  authorized under this License except under this disclaimer.         *
-*                                                                      *
-************************************************************************
-
-************************************************************************
-*                                                                      *
-*  7. Limitation of Liability                                          *
-*  --------------------------                                          *
-*                                                                      *
-*  Under no circumstances and under no legal theory, whether tort      *
-*  (including negligence), contract, or otherwise, shall any           *
-*  Contributor, or anyone who distributes Covered Software as          *
-*  permitted above, be liable to You for any direct, indirect,         *
-*  special, incidental, or consequential damages of any character      *
-*  including, without limitation, damages for lost profits, loss of    *
-*  goodwill, work stoppage, computer failure or malfunction, or any    *
-*  and all other commercial damages or losses, even if such party      *
-*  shall have been informed of the possibility of such damages. This   *
-*  limitation of liability shall not apply to liability for death or   *
-*  personal injury resulting from such party's negligence to the       *
-*  extent applicable law prohibits such limitation. Some               *
-*  jurisdictions do not allow the exclusion or limitation of           *
-*  incidental or consequential damages, so this exclusion and          *
-*  limitation may not apply to You.                                    *
-*                                                                      *
-************************************************************************
-
-8. Litigation
--------------
-
-Any litigation relating to this License may be brought only in the
-courts of a jurisdiction where the defendant maintains its principal
-place of business and such litigation shall be governed by laws of that
-jurisdiction, without reference to its conflict-of-law provisions.
-Nothing in this Section shall prevent a party's ability to bring
-cross-claims or counter-claims.
-
-9. Miscellaneous
-----------------
-
-This License represents the complete agreement concerning the subject
-matter hereof. If any provision of this License is held to be
-unenforceable, such provision shall be reformed only to the extent
-necessary to make it enforceable. Any law or regulation which provides
-that the language of a contract shall be construed against the drafter
-shall not be used to construe this License against a Contributor.
-
-10. Versions of the License
----------------------------
-
-10.1. New Versions
-
-Mozilla Foundation is the license steward. Except as provided in Section
-10.3, no one other than the license steward has the right to modify or
-publish new versions of this License. Each version will be given a
-distinguishing version number.
-
-10.2. Effect of New Versions
-
-You may distribute the Covered Software under the terms of the version
-of the License under which You originally received the Covered Software,
-or under the terms of any subsequent version published by the license
-steward.
-
-10.3. Modified Versions
-
-If you create software not governed by this License, and you want to
-create a new license for such software, you may create and use a
-modified version of this License if you rename the license and remove
-any references to the name of the license steward (except to note that
-such modified license differs from this License).
-
-10.4. Distributing Source Code Form that is Incompatible With Secondary
-Licenses
-
-If You choose to distribute Source Code Form that is Incompatible With
-Secondary Licenses under the terms of this version of the License, the
-notice described in Exhibit B of this License must be attached.
-
-Exhibit A - Source Code Form License Notice
--------------------------------------------
-
-  This Source Code Form is subject to the terms of the Mozilla Public
-  License, v. 2.0. If a copy of the MPL was not distributed with this
-  file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-If it is not possible or desirable to put the notice in a particular
-file, then You may include the notice in a location (such as a LICENSE
-file in a relevant directory) where a recipient would be likely to look
-for such a notice.
-
-You may add additional accurate notices of copyright ownership.
-
-Exhibit B - "Incompatible With Secondary Licenses" Notice
----------------------------------------------------------
-
-  This Source Code Form is "Incompatible With Secondary Licenses", as
-  defined by the Mozilla Public License, v. 2.0.

LICENSE.txt

@@ -0,0 +1,23 @@
+Boost Software License - Version 1.0 - August 17th, 2003
+
+Permission is hereby granted, free of charge, to any person or organization
+obtaining a copy of the software and accompanying documentation covered by
+this license (the "Software") to use, reproduce, display, distribute,
+execute, and transmit the Software, and to prepare derivative works of the
+Software, and to permit third-parties to whom the Software is furnished to
+do so, all subject to the following:
+
+The copyright notices in the Software and this entire statement, including
+the above license grant, this restriction and the following disclaimer,
+must be included in all copies of the Software, in whole or in part, and
+all derivative works of the Software, unless such copies or derivative
+works are solely in the form of machine-executable object code generated by
+a source language processor.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.

Makefile.am

@@ -1,103 +0,0 @@
-AUTOMAKE_OPTIONS = subdir-objects
-ACLOCAL_AMFLAGS = -I m4
-
-AM_COLOR_TESTS = always
-DISTCHECK_CONFIGURE_FLAGS = CPPFLAGS="$(BOOST_CPPFLAGS) $(CPPFLAGS)" LDFLAGS="$(BOOST_LDFLAGS)"
-
-AM_CPPFLAGS =
-AM_CPPFLAGS += $(BOOST_CPPFLAGS)
-
-AM_LDFLAGS =
-AM_LDFLAGS += -pthread
-
-check_PROGRAMS =
-check_PROGRAMS += intro
-check_PROGRAMS += sets
-check_PROGRAMS += hashes
-check_PROGRAMS += serialization
-check_PROGRAMS += multipurpose_response
-check_PROGRAMS += lists
-check_PROGRAMS += key_expiration
-check_PROGRAMS += response_adapter
-check_PROGRAMS += sync
-check_PROGRAMS += multipurpose_client
-check_PROGRAMS += test_offline
-check_PROGRAMS += test_online
-check_PROGRAMS += transaction
-
-EXTRA_PROGRAMS =
-EXTRA_PROGRAMS += subscriber
-EXTRA_PROGRAMS += echo_server
-EXTRA_PROGRAMS += chat_room
-EXTRA_PROGRAMS += commands
-
-CLEANFILES =
-CLEANFILES += $(EXTRA_PROGRAMS)
-
-.PHONY: all
-all: $(check_PROGRAMS) $(EXTRA_PROGRAMS)
-
-intro_SOURCES = $(top_srcdir)/examples/intro.cpp
-sets_SOURCES = $(top_srcdir)/examples/sets.cpp
-hashes_SOURCES = $(top_srcdir)/examples/hashes.cpp
-serialization_SOURCES = $(top_srcdir)/examples/serialization.cpp
-multipurpose_response_SOURCES = $(top_srcdir)/examples/multipurpose_response.cpp
-lists_SOURCES = $(top_srcdir)/examples/lists.cpp
-key_expiration_SOURCES = $(top_srcdir)/examples/key_expiration.cpp
-response_adapter_SOURCES = $(top_srcdir)/examples/response_adapter.cpp
-sync_SOURCES = $(top_srcdir)/examples/sync.cpp
-multipurpose_client_SOURCES = $(top_srcdir)/examples/multipurpose_client.cpp
-commands_SOURCES = $(top_srcdir)/tools/commands.cpp
-test_offline_SOURCES = $(top_srcdir)/tests/offline.cpp
-test_online_SOURCES = $(top_srcdir)/tests/online.cpp
-subscriber_SOURCES = $(top_srcdir)/examples/subscriber.cpp
-echo_server_SOURCES = $(top_srcdir)/examples/echo_server.cpp
-chat_room_SOURCES = $(top_srcdir)/examples/chat_room.cpp
-transaction_SOURCES = $(top_srcdir)/examples/transaction.cpp
-
-nobase_include_HEADERS =\
-  $(top_srcdir)/aedis/config.hpp\
-  $(top_srcdir)/aedis/src.hpp\
-  $(top_srcdir)/aedis/redis/command.hpp\
-  $(top_srcdir)/aedis/sentinel/command.hpp\
-  $(top_srcdir)/aedis/aedis.hpp\
-  $(top_srcdir)/aedis/resp3/adapter/detail/adapters.hpp\
-  $(top_srcdir)/aedis/resp3/adapter/error.hpp\
-  $(top_srcdir)/aedis/resp3/adapt.hpp\
-  $(top_srcdir)/aedis/resp3/detail/composer.hpp\
-  $(top_srcdir)/aedis/resp3/detail/read_ops.hpp\
-  $(top_srcdir)/aedis/resp3/detail/parser.hpp\
-  $(top_srcdir)/aedis/resp3/serializer.hpp\
-  $(top_srcdir)/aedis/resp3/response_traits.hpp\
-  $(top_srcdir)/aedis/resp3/node.hpp\
-  $(top_srcdir)/aedis/resp3/error.hpp\
-  $(top_srcdir)/aedis/resp3/type.hpp\
-  $(top_srcdir)/aedis/resp3/read.hpp\
-  $(top_srcdir)/aedis/redis/impl/command.ipp\
-  $(top_srcdir)/aedis/sentinel/impl/command.ipp\
-  $(top_srcdir)/aedis/resp3/detail/impl/parser.ipp\
-  $(top_srcdir)/aedis/resp3/impl/type.ipp\
-  $(top_srcdir)/aedis/resp3/impl/node.ipp\
-  $(top_srcdir)/aedis/redis/experimental/client.hpp\
-  $(top_srcdir)/aedis/redis/experimental/impl/client.ipp
-
-nobase_noinst_HEADERS =\
-  $(top_srcdir)/examples/lib/net_utils.hpp\
-  $(top_srcdir)/examples/lib/user_session.hpp\
-  $(top_srcdir)/tests/check.hpp\
-  $(top_srcdir)/tests/test_stream.hpp
-
-TESTS = $(check_PROGRAMS)
-
-EXTRA_DIST =
-EXTRA_DIST += $(top_srcdir)/README.md
-EXTRA_DIST += $(top_srcdir)/doc/DoxygenLayout.xml
-EXTRA_DIST += $(top_srcdir)/doc/aedis.css
-EXTRA_DIST += $(top_srcdir)/doc/htmlfooter.html
-EXTRA_DIST += $(top_srcdir)/doc/htmlheader.html
-
-.PHONY: doc
-doc:
-	rm -rf ../aedis-gh-pages/*
-	doxygen doc/Doxyfile
-

aedis/aedis.hpp

@@ -1,183 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <aedis/config.hpp>
-#include <aedis/redis/command.hpp>
-#include <aedis/sentinel/command.hpp>
-#include <aedis/resp3/type.hpp>
-#include <aedis/resp3/read.hpp>
-#include <aedis/resp3/adapt.hpp>
-#include <aedis/resp3/error.hpp>
-#include <aedis/resp3/serializer.hpp>
-#include <aedis/resp3/response_traits.hpp>
-#include <aedis/redis/experimental/client.hpp>
-
-/** \mainpage Documentation
-    \tableofcontents
-  
-    \section Overview
-  
-    Aedis is low-level redis client library built on top of Boost.Asio
-    that implements communication with a Redis server over its native
-    protocol RESP3. It has first-class support for STL containers and
-    C++ built in types among other things. You will be able to
-    implement your own redis client or use a general purpose provided
-    by the library. For more information about Redis see
-    https://redis.io/
-  
-    \section examples Examples
-
-    \b Basics: Focuses on small examples that show basic usage of
-    the library.
-
-    - intro.cpp: A good starting point. Some commands are sent to the
-      Redis server and the responses are printed to screen. 
-
-    - transaction.cpp: Shows how to read the responses to a trasaction
-      efficiently. See also https://redis.io/topics/transactions.
-
-    - multipurpose_response.cpp: Shows how to read any responses to
-      Redis commands, including nested aggegagtes.
-
-    - subscriber.cpp: Shows how channel subscription works at a low
-      level. See also https://redis.io/topics/pubsub.
-
-    - sync.cpp: Shows hot to use the Aedis synchronous api.
-
-    - key_expiration.cpp: Shows how to use \c std::optional to deal
-      with keys that may have expired or do not exist.
-
-    \b STL \b Containers: Many of the Redis data structures can be
-    directly translated in to STL containers, below you will find some
-    example code. For a list of Redis data types see
-    https://redis.io/topics/data-types.
-
-    - hashes.cpp: Shows how to read Redis hashes in a \c std::map, \c
-      std::unordered_map and \c std::vector.
-
-    - lists.cpp: Shows how to read Redis lists in \c std::list,
-      \c std::deque, \c std::vector. It also illustrates basic serialization.
-
-    - sets.cpp: Shows how to read Redis sets in a \c std::set, \c
-      std::unordered_set and \c std::vector.
-
-    \b Customization \b points: Shows how de/serialize user types
-    avoiding copies. This is particularly useful for low latency
-    applications that want to avoid unneeded copies, for examples when
-    storing json strings in Redis keys.
-
-    - serialization.cpp: Shows how to de/serialize your own
-      non-aggregate data-structures.
-
-    - response_adapter.cpp: Customization point for users that want to
-      de/serialize their own data-structures like containers for example.
-
-    \b Asynchronous \b servers: Contains some non-trivial examples
-    servers that interact with users and Redis asynchronously over
-    long lasting connections using a higher level API.
-
-    - multipurpose_client.cpp: Shows how to use and experimental high
-      level redis client that keeps a long lasting connections to a
-      redis server. This is the starting point for the next examples.
-
-    - echo_server.cpp: Shows the basic principles behind asynchronous
-      communication with a database in an asynchronous server. In this
-      case, the server is a proxy between the user and Redis.
-
-    - chat_room.cpp: Shows how to build a scalable chat room that
-      scales to millions of users.
-
-    \section using-aedis Using Aedis
-
-    To install and use Aedis you will need
-  
-    - Boost 1.78 or greater.
-    - Unix Shell and Make.
-    - Compiler with C++20 coroutine support e.g. GCC 10 or greater.
-    - Redis server.
-  
-    Some examples will also require interaction with
-  
-    - redis-cli: used in one example.
-    - Redis Sentinel Server: used in some examples.
-  
-    \subsection Installation
-  
-    Start by downloading and configuring the library
-  
-    ```
-    # Download the libray on github.
-    $ wget https://github.com/mzimbres/aedis/release-path # TODO
-  
-    # Uncompress the tarball and cd into the dir
-    $ tar -xzvf aedis-1.0.0.tar.gz && cd aedis-1.0.0
-  
-    # Run configure with appropriate C++ flags and your boost
-    # installation, for example # You may also have to use
-    # -Wno-subobject-linkage on gcc.
-    $ CXXFLAGS="-std=c++20 -fcoroutines -g -Wall"\
-    ./configure  --prefix=/opt/aedis-1.0.0 --with-boost=/opt/boost_1_78_0 --with-boost-libdir=/opt/boost_1_78_0/lib
-  
-    ```
-  
-    To install the library run
-  
-    ```
-    # Install Aedis in the path specified in --prefix
-    $ sudo make install
-  
-    ```
-  
-    At this point you can start using Aedis. To build the examples and
-    test you can also run
-  
-    ```
-    # Build aedis examples.
-    $ make examples
-  
-    # Test aedis in your machine.
-    $ make check
-    ```
-  
-    Finally you will have to include the following header 
-  
-    ```cpp
-    #include <aedis/src.hpp>
-    ```
-    in exactly one source file in your applications.
-  
-    Windows users can use aedis by either adding the project root
-    directory to their include path or manually copying to another
-    location. 
-  
-    \subsection Developers
-  
-    To generate the build system run
-  
-    ```
-    $ autoreconf -i
-    ```
-  
-    After that you will have a config in the project dir that you can
-    run as explained above, for example, to use a compiler other that
-    the system compiler use
-  
-    ```
-    CC=/opt/gcc-10.2.0/bin/gcc-10.2.0\
-    CXX=/opt/gcc-10.2.0/bin/g++-10.2.0\
-    CXXFLAGS="-std=c++20 -fcoroutines -g -Wall -Wno-subobject-linkage -Werror"  ./configure ...
-    ```
-    \section Referece
-  
-    See \subpage any.
- */
-
-/** \defgroup any Reference
- */
-

aedis/config.hpp

@@ -1,16 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-// TODO: Remove this.
-#include <boost/asio.hpp>
-
-namespace aedis {
-namespace net = boost::asio;
-}
-

aedis/redis/command.hpp

@@ -1,471 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <ostream>
-#include <string>
-
-#include <aedis/resp3/serializer.hpp>
-
-namespace aedis {
-namespace redis {
-
-/** \brief Redis commands.
- *  \ingroup any
- *
- *  For a full list of commands see https://redis.io/commands.
- *
- *  \remark The list of commands below are read from Redis with the
- *  help of the command \c command.
- */
-enum class command {
-   /// https://redis.io/commands/acl
-   acl,
-   /// https://redis.io/commands/append
-   append,
-   /// https://redis.io/commands/asking
-   asking,
-   /// https://redis.io/commands/auth
-   auth,
-   /// https://redis.io/commands/bgrewriteaof
-   bgrewriteaof,
-   /// https://redis.io/commands/bgsave
-   bgsave,
-   /// https://redis.io/commands/bitcount
-   bitcount,
-   /// https://redis.io/commands/bitfield
-   bitfield,
-   /// https://redis.io/commands/bitfield_ro
-   bitfield_ro,
-   /// https://redis.io/commands/bitop
-   bitop,
-   /// https://redis.io/commands/bitpos
-   bitpos,
-   /// https://redis.io/commands/blpop
-   blpop,
-   /// https://redis.io/commands/brpop
-   brpop,
-   /// https://redis.io/commands/brpoplpush
-   brpoplpush,
-   /// https://redis.io/commands/bzpopmax
-   bzpopmax,
-   /// https://redis.io/commands/bzpopmin
-   bzpopmin,
-   /// https://redis.io/commands/client
-   client,
-   /// https://redis.io/commands/cluster
-   cluster,
-   /// https://redis.io/commands/command
-   command,
-   /// https://redis.io/commands/config
-   config,
-   /// https://redis.io/commands/dbsize
-   dbsize,
-   /// https://redis.io/commands/debug
-   debug,
-   /// https://redis.io/commands/decr
-   decr,
-   /// https://redis.io/commands/decrby
-   decrby,
-   /// https://redis.io/commands/del
-   del,
-   /// https://redis.io/commands/discard
-   discard,
-   /// https://redis.io/commands/dump
-   dump,
-   /// https://redis.io/commands/echo
-   echo,
-   /// https://redis.io/commands/eval
-   eval,
-   /// https://redis.io/commands/evalsha
-   evalsha,
-   /// https://redis.io/commands/exec
-   exec,
-   /// https://redis.io/commands/exists
-   exists,
-   /// https://redis.io/commands/expire
-   expire,
-   /// https://redis.io/commands/expireat
-   expireat,
-   /// https://redis.io/commands/flushall
-   flushall,
-   /// https://redis.io/commands/flushdb
-   flushdb,
-   /// https://redis.io/commands/geoadd
-   geoadd,
-   /// https://redis.io/commands/geodist
-   geodist,
-   /// https://redis.io/commands/geohash
-   geohash,
-   /// https://redis.io/commands/geopos
-   geopos,
-   /// https://redis.io/commands/georadius
-   georadius,
-   /// https://redis.io/commands/georadius_ro
-   georadius_ro,
-   /// https://redis.io/commands/georadiusbymember
-   georadiusbymember,
-   /// https://redis.io/commands/georadiusbymember_ro
-   georadiusbymember_ro,
-   /// https://redis.io/commands/get
-   get,
-   /// https://redis.io/commands/getbit
-   getbit,
-   /// https://redis.io/commands/getrange
-   getrange,
-   /// https://redis.io/commands/getset
-   getset,
-   /// https://redis.io/commands/hdel
-   hdel,
-   /// https://redis.io/commands/hello
-   hello,
-   /// https://redis.io/commands/hexists
-   hexists,
-   /// https://redis.io/commands/hget
-   hget,
-   /// https://redis.io/commands/hgetall
-   hgetall,
-   /// https://redis.io/commands/hincrby
-   hincrby,
-   /// https://redis.io/commands/hincrbyfloat
-   hincrbyfloat,
-   /// https://redis.io/commands/hkeys
-   hkeys,
-   /// https://redis.io/commands/hlen
-   hlen,
-   /// https://redis.io/commands/hmget
-   hmget,
-   /// https://redis.io/commands/hmset
-   hmset,
-   /// https://redis.io/commands/hscan
-   hscan,
-   /// https://redis.io/commands/hset
-   hset,
-   /// https://redis.io/commands/hsetnx
-   hsetnx,
-   /// https://redis.io/commands/hstrlen
-   hstrlen,
-   /// https://redis.io/commands/hvals
-   hvals,
-   /// https://redis.io/commands/incr
-   incr,
-   /// https://redis.io/commands/incrby
-   incrby,
-   /// https://redis.io/commands/incrbyfloat
-   incrbyfloat,
-   /// https://redis.io/commands/info
-   info,
-   /// https://redis.io/commands/keys
-   keys,
-   /// https://redis.io/commands/lastsave
-   lastsave,
-   /// https://redis.io/commands/latency
-   latency,
-   /// https://redis.io/commands/lindex
-   lindex,
-   /// https://redis.io/commands/linsert
-   linsert,
-   /// https://redis.io/commands/llen
-   llen,
-   /// https://redis.io/commands/lolwut
-   lolwut,
-   /// https://redis.io/commands/lpop
-   lpop,
-   /// https://redis.io/commands/lpos
-   lpos,
-   /// https://redis.io/commands/lpush
-   lpush,
-   /// https://redis.io/commands/lpushx
-   lpushx,
-   /// https://redis.io/commands/lrange
-   lrange,
-   /// https://redis.io/commands/lrem
-   lrem,
-   /// https://redis.io/commands/lset
-   lset,
-   /// https://redis.io/commands/ltrim
-   ltrim,
-   /// https://redis.io/commands/memory
-   memory,
-   /// https://redis.io/commands/mget
-   mget,
-   /// https://redis.io/commands/migrate
-   migrate,
-   /// https://redis.io/commands/module
-   module,
-   /// https://redis.io/commands/monitor
-   monitor,
-   /// https://redis.io/commands/move
-   move,
-   /// https://redis.io/commands/mset
-   mset,
-   /// https://redis.io/commands/msetnx
-   msetnx,
-   /// https://redis.io/commands/multi
-   multi,
-   /// https://redis.io/commands/object
-   object,
-   /// https://redis.io/commands/persist
-   persist,
-   /// https://redis.io/commands/pexpire
-   pexpire,
-   /// https://redis.io/commands/pexpireat
-   pexpireat,
-   /// https://redis.io/commands/pfadd
-   pfadd,
-   /// https://redis.io/commands/pfcount
-   pfcount,
-   /// https://redis.io/commands/pfdebug
-   pfdebug,
-   /// https://redis.io/commands/pfmerge
-   pfmerge,
-   /// https://redis.io/commands/pfselftest
-   pfselftest,
-   /// https://redis.io/commands/ping
-   ping,
-   /// https://redis.io/commands/post
-   post,
-   /// https://redis.io/commands/psetex
-   psetex,
-   /// https://redis.io/commands/psubscribe
-   psubscribe,
-   /// https://redis.io/commands/psync
-   psync,
-   /// https://redis.io/commands/pttl
-   pttl,
-   /// https://redis.io/commands/publish
-   publish,
-   /// https://redis.io/commands/pubsub
-   pubsub,
-   /// https://redis.io/commands/punsubscribe
-   punsubscribe,
-   /// https://redis.io/commands/randomkey
-   randomkey,
-   /// https://redis.io/commands/readonly
-   readonly,
-   /// https://redis.io/commands/readwrite
-   readwrite,
-   /// https://redis.io/commands/rename
-   rename,
-   /// https://redis.io/commands/renamenx
-   renamenx,
-   /// https://redis.io/commands/replconf
-   replconf,
-   /// https://redis.io/commands/replicaof
-   replicaof,
-   /// https://redis.io/commands/restore
-   restore,
-   /// https://redis.io/commands/role
-   role,
-   /// https://redis.io/commands/rpop
-   rpop,
-   /// https://redis.io/commands/rpoplpush
-   rpoplpush,
-   /// https://redis.io/commands/rpush
-   rpush,
-   /// https://redis.io/commands/rpushx
-   rpushx,
-   /// https://redis.io/commands/sadd
-   sadd,
-   /// https://redis.io/commands/save
-   save,
-   /// https://redis.io/commands/scan
-   scan,
-   /// https://redis.io/commands/scard
-   scard,
-   /// https://redis.io/commands/script
-   script,
-   /// https://redis.io/commands/sdiff
-   sdiff,
-   /// https://redis.io/commands/sdiffstore
-   sdiffstore,
-   /// https://redis.io/commands/select
-   select,
-   /// https://redis.io/commands/set
-   set,
-   /// https://redis.io/commands/setbit
-   setbit,
-   /// https://redis.io/commands/setex
-   setex,
-   /// https://redis.io/commands/setnx
-   setnx,
-   /// https://redis.io/commands/setrange
-   setrange,
-   /// https://redis.io/commands/shutdown
-   shutdown,
-   /// https://redis.io/commands/sinter
-   sinter,
-   /// https://redis.io/commands/sinterstore
-   sinterstore,
-   /// https://redis.io/commands/sismember
-   sismember,
-   /// https://redis.io/commands/slaveof
-   slaveof,
-   /// https://redis.io/commands/slowlog
-   slowlog,
-   /// https://redis.io/commands/smembers
-   smembers,
-   /// https://redis.io/commands/smove
-   smove,
-   /// https://redis.io/commands/sort
-   sort,
-   /// https://redis.io/commands/spop
-   spop,
-   /// https://redis.io/commands/srandmember
-   srandmember,
-   /// https://redis.io/commands/srem
-   srem,
-   /// https://redis.io/commands/sscan
-   sscan,
-   /// https://redis.io/commands/stralgo
-   stralgo,
-   /// https://redis.io/commands/strlen
-   strlen,
-   /// https://redis.io/commands/subscribe
-   subscribe,
-   /// https://redis.io/commands/substr
-   substr,
-   /// https://redis.io/commands/sunion
-   sunion,
-   /// https://redis.io/commands/sunionstore
-   sunionstore,
-   /// https://redis.io/commands/swapdb
-   swapdb,
-   /// https://redis.io/commands/sync
-   sync,
-   /// https://redis.io/commands/time
-   time,
-   /// https://redis.io/commands/touch
-   touch,
-   /// https://redis.io/commands/ttl
-   ttl,
-   /// https://redis.io/commands/type
-   type,
-   /// https://redis.io/commands/unlink
-   unlink,
-   /// https://redis.io/commands/quit
-   quit,
-   /// https://redis.io/commands/unsubscribe
-   unsubscribe,
-   /// https://redis.io/commands/unwatch
-   unwatch,
-   /// https://redis.io/commands/wait
-   wait,
-   /// https://redis.io/commands/watch
-   watch,
-   /// https://redis.io/commands/xack
-   xack,
-   /// https://redis.io/commands/xadd
-   xadd,
-   /// https://redis.io/commands/xclaim
-   xclaim,
-   /// https://redis.io/commands/xdel
-   xdel,
-   /// https://redis.io/commands/xgroup
-   xgroup,
-   /// https://redis.io/commands/xinfo
-   xinfo,
-   /// https://redis.io/commands/xlen
-   xlen,
-   /// https://redis.io/commands/xpending
-   xpending,
-   /// https://redis.io/commands/xrange
-   xrange,
-   /// https://redis.io/commands/xread
-   xread,
-   /// https://redis.io/commands/xreadgroup
-   xreadgroup,
-   /// https://redis.io/commands/xrevrange
-   xrevrange,
-   /// https://redis.io/commands/xsetid
-   xsetid,
-   /// https://redis.io/commands/xtrim
-   xtrim,
-   /// https://redis.io/commands/zadd
-   zadd,
-   /// https://redis.io/commands/zcard
-   zcard,
-   /// https://redis.io/commands/zcount
-   zcount,
-   /// https://redis.io/commands/zincrby
-   zincrby,
-   /// https://redis.io/commands/zinterstore
-   zinterstore,
-   /// https://redis.io/commands/zlexcount
-   zlexcount,
-   /// https://redis.io/commands/zpopmax
-   zpopmax,
-   /// https://redis.io/commands/zpopmin
-   zpopmin,
-   /// https://redis.io/commands/zrange
-   zrange,
-   /// https://redis.io/commands/zrangebylex
-   zrangebylex,
-   /// https://redis.io/commands/zrangebyscore
-   zrangebyscore,
-   /// https://redis.io/commands/zrank
-   zrank,
-   /// https://redis.io/commands/zrem
-   zrem,
-   /// https://redis.io/commands/zremrangebylex
-   zremrangebylex,
-   /// https://redis.io/commands/zremrangebyrank
-   zremrangebyrank,
-   /// https://redis.io/commands/zremrangebyscore
-   zremrangebyscore,
-   /// https://redis.io/commands/zrevrange
-   zrevrange,
-   /// https://redis.io/commands/zrevrangebylex
-   zrevrangebylex,
-   /// https://redis.io/commands/zrevrangebyscore
-   zrevrangebyscore,
-   /// https://redis.io/commands/zrevrank
-   zrevrank,
-   /// https://redis.io/commands/zscan
-   zscan,
-   /// https://redis.io/commands/zscore
-   zscore,
-   /// https://redis.io/commands/zunionstore
-   zunionstore,
-   /// Unknown/invalid command.
-   unknown
-};
-
-/** \brief Converts a command to a string
- *  \ingroup any
- *
- *  \param c The command to convert.
- */
-char const* to_string(command c);
-
-/** \brief Write the text for a command name to an output stream.
- *  \ingroup operators
- *
- *  \param os Output stream.
- *  \param c Redis command
- */
-std::ostream& operator<<(std::ostream& os, command c);
-
-/** \brief Returns true for commands with push response.
- *  \ingroup any
- */
-bool has_push_response(command cmd);
-
-/** \brief Creates a serializer for a \c std::string.
- *  \ingroup any
- *  \param storage The string.
- */
-template <class CharT, class Traits, class Allocator>
-resp3::serializer<std::string, command>
-make_serializer(std::basic_string<CharT, Traits, Allocator>& storage)
-{
-   return resp3::serializer<std::basic_string<CharT, Traits, Allocator>, command>(storage);
-}
-
-} // redis
-} // aedis

aedis/redis/experimental/client.hpp

@@ -1,158 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <queue>
-#include <functional>
-
-#include <aedis/aedis.hpp>
-#include <aedis/redis/command.hpp>
-
-namespace aedis {
-namespace resp3 {
-namespace experimental {
-
-/**  \brief A high level redis client.
- *   \ingroup any
- *
- *   This Redis client keeps a connection to the database open and
- *   uses it for all communication with Redis. For examples on how to
- *   use see the examples chat_room.cpp, echo_server.cpp and redis_client.cpp.
- *
- *   \remarks This class reuses its internal buffers for requests and
- *   for reading Redis responses. With time it will allocate less and
- *   less.
- */
-class client : public std::enable_shared_from_this<client> {
-public:
-   /** \brief The extended response adapter type.
-    *
-    *  The difference between the adapter and extended_adapter
-    *  concepts is that the extended get a command redis::parameter.
-    */
-   using extented_adapter_type = std::function<void(redis::command, type, std::size_t, std::size_t, char const*, std::size_t, std::error_code&)>;
-
-   /// The type of the message callback.
-   using on_message_type = std::function<void(std::error_code ec, redis::command)>;
-
-   /// The type of the socket used by the client.
-   //using socket_type = net::use_awaitable_t<>::as_default_on_t<net::ip::tcp::socket>;
-   using socket_type = net::ip::tcp::socket;
-
-private:
-   struct request_info {
-      // Request size in bytes.
-      std::size_t size = 0;
-
-      // The number of commands it contains excluding commands that
-      // have push types as responses, see has_push_response.
-      std::size_t cmds = 0;
-   };
-
-   // Requests payload.
-   std::string requests_;
-
-   // The commands contained in the requests.
-   std::queue<redis::command> commands_;
-
-   // Info about the requests.
-   std::queue<request_info> req_info_;
-
-   // The stream.
-   socket_type socket_;
-
-   // Timer used to inform the write coroutine that it can write the
-   // next message in the output queue.
-   net::steady_timer timer_;
-
-   // Response adapter.
-   extented_adapter_type extended_adapter_ = [](redis::command, type, std::size_t, std::size_t, char const*, std::size_t, std::error_code&) {};
-
-   // Message callback.
-   on_message_type on_msg_ = [](std::error_code ec, redis::command) {};
-
-   // Set when the writer coroutine should stop.
-   bool stop_writer_ = false;
-
-   // A coroutine that keeps reading the socket. When a message
-   // arrives it calls on_message.
-   net::awaitable<void> reader();
-
-   // Write coroutine. It is kept suspended until there are messages
-   // to be sent.
-   net::awaitable<void> writer();
-
-   /* Prepares the back of the queue to receive further commands. 
-    *
-    * If true is returned the request in the front of the queue can be
-    * sent to the server. See async_write_some.
-    */
-   bool prepare_next();
-
-public:
-   /** \brief Client constructor.
-    *
-    *  Constructos the client from an executor.
-    *
-    *  \param ex The executor.
-    */
-   client(net::any_io_executor ex);
-
-   /// Returns the executor used for I/O with Redis.
-   auto get_executor() {return socket_.get_executor();}
-
-   /** \brief Starts communication with Redis.
-    *
-    *  This functions will send the hello command to Redis and spawn
-    *  the read and write coroutines.
-    *
-    *  \param socket A socket that is connected to redis.
-    *
-    *  \returns This function returns an awaitable on which users should \c
-    *  co_await. When the communication with Redis is lost the
-    *  coroutine will finally co_return.
-    */
-   net::awaitable<void> engage(socket_type socket);
-
-   /** \brief Adds a command to the command queue.
-    *
-    *  \sa serializer.hpp
-    */
-   template <class... Ts>
-   void send(redis::command cmd, Ts const&... args);
-
-   /// Sets an extended response adapter.
-   void set_extended_adapter(extented_adapter_type adapter);
-
-   /// Sets the message callback;
-   void set_msg_callback(on_message_type on_msg);
-};
-
-template <class... Ts>
-void client::send(redis::command cmd, Ts const&... args)
-{
-   auto const can_write = prepare_next();
-
-   auto sr = redis::make_serializer(requests_);
-   auto const before = std::size(requests_);
-   sr.push(cmd, args...);
-   auto const after = std::size(requests_);
-   req_info_.front().size += after - before;;
-
-   if (!has_push_response(cmd)) {
-      commands_.emplace(cmd);
-      ++req_info_.front().cmds;
-   }
-
-   if (can_write)
-      timer_.cancel_one();
-}
-
-} // experimental
-} // resp3
-} // aedis

aedis/redis/experimental/impl/client.ipp

@@ -1,200 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <aedis/redis/experimental/client.hpp>
-
-#include <boost/asio/experimental/awaitable_operators.hpp>
-
-namespace aedis {
-namespace resp3 {
-namespace experimental {
-
-client::client(net::any_io_executor ex)
-: socket_{ex}
-, timer_{ex}
-{
-   timer_.expires_at(std::chrono::steady_clock::time_point::max());
-}
-
-net::awaitable<void> client::reader()
-{
-   // Writes and reads continuosly from the socket.
-   for (std::string buffer;;) {
-      // Notice this coro can get scheduled while the write operation
-      // in the writer is ongoing. so we have to check.
-      while (!std::empty(req_info_) && req_info_.front().size != 0) {
-         assert(!std::empty(requests_));
-         boost::system::error_code ec;
-         co_await
-            net::async_write(
-               socket_,
-               net::buffer(requests_.data(), req_info_.front().size),
-               net::redirect_error(net::use_awaitable, ec));
-
-	 requests_.erase(0, req_info_.front().size);
-         req_info_.front().size = 0;
-
-	 if (req_info_.front().cmds != 0)
-	    break; // We must await the responses.
-
-	 req_info_.pop();
-      }
-
-      do { // Keeps reading while there are no messages queued waiting to be sent.
-	 do { // Consumes the responses to all commands in the request.
-            boost::system::error_code ec;
-	    auto const t =
-               co_await async_read_type(socket_, net::dynamic_buffer(buffer),
-                     net::redirect_error(net::use_awaitable, ec));
-            if (ec) {
-               stop_writer_ = true;
-               timer_.cancel();
-               co_return;
-            }
-
-	    if (t == type::push) {
-	       auto adapter = [this](type t, std::size_t aggregate_size, std::size_t depth, char const* data, std::size_t size, std::error_code& ec)
-		  {extended_adapter_(redis::command::unknown, t, aggregate_size, depth, data, size, ec);};
-
-	       co_await resp3::async_read(socket_, net::dynamic_buffer(buffer), adapter, net::redirect_error(net::use_awaitable, ec));
-	       on_msg_(ec, redis::command::unknown);
-               if (ec) { // TODO: Return only on non aedis errors.
-                  stop_writer_ = true;
-                  timer_.cancel();
-                  co_return;
-               }
-
-	    } else {
-	       auto adapter = [this](type t, std::size_t aggregate_size, std::size_t depth, char const* data, std::size_t size, std::error_code& ec)
-		  {extended_adapter_(commands_.front(), t, aggregate_size, depth, data, size, ec);};
-
-	       boost::system::error_code ec;
-	       co_await resp3::async_read(socket_, net::dynamic_buffer(buffer), adapter, net::redirect_error(net::use_awaitable, ec));
-	       on_msg_(ec, commands_.front());
-               if (ec) { // TODO: Return only on non aedis errors.
-                  stop_writer_ = true;
-                  timer_.cancel();
-                  co_return;
-               }
-
-	       commands_.pop();
-	       --req_info_.front().cmds;
-	    }
-
-	 } while (!std::empty(req_info_) && req_info_.front().cmds != 0);
-
-	 // We may exit the loop above either because we are done
-	 // with the response or because we received a server push
-	 // while the queue was empty so we have to check before
-	 // poping..
-	 if (!std::empty(req_info_))
-	    req_info_.pop();
-
-      } while (std::empty(req_info_));
-   }
-}
-
-net::awaitable<void> client::writer()
-{
-   boost::system::error_code ec;
-   while (socket_.is_open()) {
-      ec = {};
-      co_await timer_.async_wait(net::redirect_error(net::use_awaitable, ec));
-      if (stop_writer_)
-         co_return;
-
-      // Notice this coro can get scheduled while the write operation
-      // in the reader is ongoing. so we have to check.
-      while (!std::empty(req_info_) && req_info_.front().size != 0) {
-         assert(!std::empty(requests_));
-         ec = {};
-         co_await net::async_write(
-            socket_, net::buffer(requests_.data(), req_info_.front().size),
-            net::redirect_error(net::use_awaitable, ec));
-         if (ec) {
-           // What should we do here exactly? Closing the socket will
-           // cause the reader coroutine to return so that the engage
-           // coroutine returns to the user.
-           socket_.close();
-           co_return;
-         }
-
-         requests_.erase(0, req_info_.front().size);
-         req_info_.front().size = 0;
-         
-         if (req_info_.front().cmds != 0) 
-            break;
-         
-         req_info_.pop();
-      }
-   }
-}
-
-bool client::prepare_next()
-{
-   if (std::empty(req_info_)) {
-      req_info_.push({});
-      return true;
-   }
-
-   if (req_info_.front().size == 0) {
-      // It has already been written and we are waiting for the
-      // responses.
-      req_info_.push({});
-      return false;
-   }
-
-   return false;
-}
-
-void client::set_extended_adapter(extented_adapter_type adapter)
-{
-   extended_adapter_ = adapter;
-}
-
-void client::set_msg_callback(on_message_type on_msg)
-{
-   on_msg_ = on_msg;
-}
-
-net::awaitable<void> client::engage(socket_type socket)
-{
-   using namespace aedis::net::experimental::awaitable_operators;
-
-   socket_ = std::move(socket);
-
-   std::string request;
-   auto sr = redis::make_serializer(request);
-   sr.push(redis::command::hello, 3);
-
-   boost::system::error_code ec;
-   co_await net::async_write(socket_, net::buffer(request), net::redirect_error(net::use_awaitable, ec));
-   if (ec)
-      co_return;
-
-   std::string buffer;
-   auto adapter = [this](type t, std::size_t aggregate_size, std::size_t depth, char const* data, std::size_t size, std::error_code& ec)
-      {extended_adapter_(redis::command::hello, t, aggregate_size, depth, data, size, ec);};
-
-   co_await
-      resp3::async_read(
-         socket_, net::dynamic_buffer(buffer), adapter, net::redirect_error(net::use_awaitable, ec));
-
-   on_msg_(ec, redis::command::hello);
-
-   if (ec)
-      co_return;
-
-   co_await (reader() && writer());
-}
-
-} // experimental
-} // resp3
-} // aedis
-

aedis/redis/impl/command.ipp

@@ -1,245 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <aedis/redis/command.hpp>
-
-namespace aedis {
-namespace redis {
-
-char const* to_string(command c)
-{
-   static char const* table[] = {
-      "ACL",
-      "APPEND",
-      "ASKING",
-      "AUTH",
-      "BGREWRITEAOF",
-      "BGSAVE",
-      "BITCOUNT",
-      "BITFIELD",
-      "BITFIELD_RO",
-      "BITOP",
-      "BITPOS",
-      "BLPOP",
-      "BRPOP",
-      "BRPOPLPUSH",
-      "BZPOPMAX",
-      "BZPOPMIN",
-      "CLIENT",
-      "CLUSTER",
-      "COMMAND",
-      "CONFIG",
-      "DBSIZE",
-      "DEBUG",
-      "DECR",
-      "DECRBY",
-      "DEL",
-      "DISCARD",
-      "DUMP",
-      "ECHO",
-      "EVAL",
-      "EVALSHA",
-      "EXEC",
-      "EXISTS",
-      "EXPIRE",
-      "EXPIREAT",
-      "FLUSHALL",
-      "FLUSHDB",
-      "GEOADD",
-      "GEODIST",
-      "GEOHASH",
-      "GEOPOS",
-      "GEORADIUS",
-      "GEORADIUS_RO",
-      "GEORADIUSBYMEMBER",
-      "GEORADIUSBYMEMBER_RO",
-      "GET",
-      "GETBIT",
-      "GETRANGE",
-      "GETSET",
-      "HDEL",
-      "HELLO",
-      "HEXISTS",
-      "HGET",
-      "HGETALL",
-      "HINCRBY",
-      "HINCRBYFLOAT",
-      "HKEYS",
-      "HLEN",
-      "HMGET",
-      "HMSET",
-      "HSCAN",
-      "HSET",
-      "HSETNX",
-      "HSTRLEN",
-      "HVALS",
-      "INCR",
-      "INCRBY",
-      "INCRBYFLOAT",
-      "INFO",
-      "KEYS",
-      "LASTSAVE",
-      "LATENCY",
-      "LINDEX",
-      "LINSERT",
-      "LLEN",
-      "LOLWUT",
-      "LPOP",
-      "LPOS",
-      "LPUSH",
-      "LPUSHX",
-      "LRANGE",
-      "LREM",
-      "LSET",
-      "LTRIM",
-      "MEMORY",
-      "MGET",
-      "MIGRATE",
-      "MODULE",
-      "MONITOR",
-      "MOVE",
-      "MSET",
-      "MSETNX",
-      "MULTI",
-      "OBJECT",
-      "PERSIST",
-      "PEXPIRE",
-      "PEXPIREAT",
-      "PFADD",
-      "PFCOUNT",
-      "PFDEBUG",
-      "PFMERGE",
-      "PFSELFTEST",
-      "PING",
-      "POST",
-      "PSETEX",
-      "PSUBSCRIBE",
-      "PSYNC",
-      "PTTL",
-      "PUBLISH",
-      "PUBSUB",
-      "PUNSUBSCRIBE",
-      "RANDOMKEY",
-      "READONLY",
-      "READWRITE",
-      "RENAME",
-      "RENAMENX",
-      "REPLCONF",
-      "REPLICAOF",
-      "RESTORE",
-      "ROLE",
-      "RPOP",
-      "RPOPLPUSH",
-      "RPUSH",
-      "RPUSHX",
-      "SADD",
-      "SAVE",
-      "SCAN",
-      "SCARD",
-      "SCRIPT",
-      "SDIFF",
-      "SDIFFSTORE",
-      "SELECT",
-      "SET",
-      "SETBIT",
-      "SETEX",
-      "SETNX",
-      "SETRANGE",
-      "SHUTDOWN",
-      "SINTER",
-      "SINTERSTORE",
-      "SISMEMBER",
-      "SLAVEOF",
-      "SLOWLOG",
-      "SMEMBERS",
-      "SMOVE",
-      "SORT",
-      "SPOP",
-      "SRANDMEMBER",
-      "SREM",
-      "SSCAN",
-      "STRALGO",
-      "STRLEN",
-      "SUBSCRIBE",
-      "SUBSTR",
-      "SUNION",
-      "SUNIONSTORE",
-      "SWAPDB",
-      "SYNC",
-      "TIME",
-      "TOUCH",
-      "TTL",
-      "TYPE",
-      "UNLINK",
-      "QUIT",
-      "UNSUBSCRIBE",
-      "UNWATCH",
-      "WAIT",
-      "WATCH",
-      "XACK",
-      "XADD",
-      "XCLAIM",
-      "XDEL",
-      "XGROUP",
-      "XINFO",
-      "XLEN",
-      "XPENDING",
-      "XRANGE",
-      "XREAD",
-      "XREADGROUP",
-      "XREVRANGE",
-      "XSETID",
-      "XTRIM",
-      "ZADD",
-      "ZCARD",
-      "ZCOUNT",
-      "ZINCRBY",
-      "ZINTERSTORE",
-      "ZLEXCOUNT",
-      "ZPOPMAX",
-      "ZPOPMIN",
-      "ZRANGE",
-      "ZRANGEBYLEX",
-      "ZRANGEBYSCORE",
-      "ZRANK",
-      "ZREM",
-      "ZREMRANGEBYLEX",
-      "ZREMRANGEBYRANK",
-      "ZREMRANGEBYSCORE",
-      "ZREVRANGE",
-      "ZREVRANGEBYLEX",
-      "ZREVRANGEBYSCORE",
-      "ZREVRANK",
-      "ZSCAN",
-      "ZSCORE",
-      "ZUNIONSTORE",
-   };
-
-   return table[static_cast<int>(c)];
-}
-
-std::ostream& operator<<(std::ostream& os, command c)
-{
-   os << to_string(c);
-   return os;
-}
-
-bool has_push_response(command cmd)
-{
-   switch (cmd) {
-      case command::subscribe:
-      case command::unsubscribe:
-      case command::psubscribe:
-      return true;
-
-      default:
-      return false;
-   }
-}
-
-} // redis
-} // aedis

aedis/resp3/adapt.hpp

@@ -1,94 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <aedis/resp3/response_traits.hpp>
-
-namespace aedis {
-namespace resp3 {
-
-/** \brief Creates a void response adapter.
-    \ingroup any
-  
-    The adapter returned by this function ignores responses and is
-    useful to avoid wasting time with responses which the user is
-    insterested in.
-
-    Example usage:
-
-    @code
-    co_await async_read(socket, buffer, adapt());
-    @endcode
- */
-inline
-auto adapt() noexcept
-   { return response_traits<void>::adapt(); }
-
-/** \brief Adapts user data to read operations.
- *  \ingroup any
- *
- *  For example
- *  The following types are supported.
- *
- *  - Integer data types e.g. `int`, `unsigned`, etc.
- *
- *  - `std::string`
- *
- *  We also support the following C++ containers
- *
- *  - `std::vector<T>`. Can be used with any RESP3 aggregate type.
- *
- *  - `std::deque<T>`. Can be used with any RESP3 aggregate type.
- *
- *  - `std::list<T>`. Can be used with any RESP3 aggregate type.
- *
- *  - `std::set<T>`. Can be used with RESP3 set type.
- *
- *  - `std::unordered_set<T>`. Can be used with RESP3 set type.
- *
- *  - `std::map<T>`. Can be used with RESP3 hash type.
- *
- *  - `std::unordered_map<T>`. Can be used with RESP3 hash type.
- *
- *  All these types can be wrapped in an `std::optional<T>`. This
- *  function also support \c std::tuple to read the response to
- *  tuples. At the moment this feature supports only transactions that
- *  contain simple types or aggregates that don't contain aggregates
- *  themselves (as in most cases).
- *
- *  Example usage:
- *
- *  @code
- *  std::unordered_map<std::string, std::string> cont;
- *  co_await async_read(socket, buffer, adapt(cont));
- *  @endcode
- * 
- *  For a transaction
- *
- *  @code
-    sr.push(command::multi);
-    sr.push(command::ping, ...);
-    sr.push(command::incr, ...);
-    sr.push_range(command::rpush, ...);
-    sr.push(command::lrange, ...);
-    sr.push(command::incr, ...);
-    sr.push(command::exec);
-
-    co_await async_write(socket, buffer(request));
-
-    // Reads the response to a transaction
-    std::tuple<std::string, int, int, std::vector<std::string>, int> execs;
-    co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(execs));
- *  @endcode
- */
-template<class T>
-auto adapt(T& t) noexcept
-   { return response_traits<T>::adapt(t); }
-
-} // resp3
-} // aedis

aedis/resp3/adapter/detail/adapters.hpp

@@ -1,382 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <set>
-#include <optional>
-#include <system_error>
-#include <map>
-#include <list>
-#include <deque>
-#include <vector>
-#include <charconv>
-
-#include <aedis/resp3/type.hpp>
-#include <aedis/resp3/node.hpp>
-#include <aedis/resp3/serializer.hpp>
-#include <aedis/resp3/adapter/error.hpp>
-
-namespace aedis {
-namespace resp3 {
-namespace adapter {
-namespace detail {
-
-template <class T>
-typename std::enable_if<std::is_integral<T>::value, void>::type
-from_string(
-   T& i,
-   char const* data,
-   std::size_t data_size,
-   std::error_code& ec)
-{
-   auto const res = std::from_chars(data, data + data_size, i);
-   if (res.ec != std::errc())
-      ec = std::make_error_code(res.ec);
-}
-
-template <class CharT, class Traits, class Allocator>
-void
-from_string(
-   std::basic_string<CharT, Traits, Allocator>& s,
-   char const* data,
-   std::size_t data_size,
-   std::error_code&)
-{
-  s.assign(data, data_size);
-}
-
-void set_on_resp3_error(type t, std::error_code& ec)
-{
-   switch (t) {
-      case type::simple_error: ec = adapter::error::simple_error; return;
-      case type::blob_error: ec = adapter::error::blob_error; return;
-      case type::null: ec = adapter::error::null; return;
-      default: return;
-   }
-}
-
-// For optional responses.
-void set_on_resp3_error2(type t, std::error_code& ec)
-{
-   switch (t) {
-      case type::simple_error: ec = adapter::error::simple_error; return;
-      case type::blob_error: ec = adapter::error::blob_error; return;
-      default: return;
-   }
-}
-
-// Adapter that ignores responses.
-struct ignore {
-   void
-   operator()(
-      type, std::size_t, std::size_t, char const*, std::size_t,
-      std::error_code&) { }
-};
-
-template <class Container>
-class general {
-private:
-   Container* result_;
-
-public:
-   general(Container* c = nullptr): result_(c) {}
-
-   /** @brief Function called by the parser when new data has been processed.
-    *  
-    *  Users who what to customize their response types are required to derive
-    *  from this class and override this function, see examples.
-    *
-    *  \param t The RESP3 type of the data.
-    *
-    *  \param n When t is an aggregate data type this will contain its size
-    *     (see also element_multiplicity) for simple data types this is always 1.
-    *
-    *  \param depth The element depth in the tree.
-    *
-    *  \param data A pointer to the data.
-    *
-    *  \param size The size of data.
-    */
-   void
-   operator()(
-      type t,
-      std::size_t aggregate_size,
-      std::size_t depth,
-      char const* data,
-      std::size_t size,
-      std::error_code&)
-      {
-	 result_->emplace_back(t, aggregate_size, depth, std::string{data, size});
-      }
-};
-
-template <class Node>
-class adapter_node {
-private:
-   Node* result_;
-
-public:
-   adapter_node(Node* t = nullptr) : result_(t) {}
-
-   void
-   operator()(
-      type t,
-      std::size_t aggregate_size,
-      std::size_t depth,
-      char const* data,
-      std::size_t data_size,
-      std::error_code&)
-   {
-     result_->data_type = t;
-     result_->aggregate_size = aggregate_size;
-     result_->depth = depth;
-     result_->data.assign(data, data_size);
-   }
-};
-
-// Adapter for RESP3 simple data types.
-template <class T>
-class simple {
-private:
-   T* result_;
-
-public:
-   simple(T* t = nullptr) : result_(t) {}
-
-   void
-   operator()(
-      type t,
-      std::size_t aggregate_size,
-      std::size_t depth,
-      char const* data,
-      std::size_t data_size,
-      std::error_code& ec)
-   {
-      set_on_resp3_error(t, ec);
-
-      if (is_aggregate(t)) {
-	 ec = adapter::error::expects_simple_type;
-	 return;
-      }
-
-      assert(aggregate_size == 1);
-      from_string(*result_, data, data_size, ec);
-   }
-};
-
-template <class T>
-class simple_optional {
-private:
-  std::optional<T>* result_;
-
-public:
-   simple_optional(std::optional<T>* o = nullptr) : result_(o) {}
-
-   void
-   operator()(
-      type t,
-      std::size_t aggregate_size,
-      std::size_t depth,
-      char const* data,
-      std::size_t data_size,
-      std::error_code& ec)
-   {
-      set_on_resp3_error2(t, ec);
-
-      if (is_aggregate(t)) {
-	 ec = adapter::error::expects_simple_type;
-	 return;
-      }
-
-      assert(aggregate_size == 1);
-
-      if (depth != 0) {
-	 ec = adapter::error::nested_unsupported;
-	 return;
-      }
-
-      if (t == type::null)
-         return;
-
-      if (!result_->has_value())
-        *result_ = T{};
-
-      from_string(result_->value(), data, data_size, ec);
-   }
-};
-
-/* A std::vector adapter.
- */
-template <class Container>
-class vector {
-private:
-   int i_ = -1;
-   Container* result_;
-
-public:
-   vector(Container* v = nullptr) : result_{v} {}
-
-   void
-   operator()(type t,
-       std::size_t aggregate_size,
-       std::size_t depth,
-       char const* data,
-       std::size_t data_size,
-       std::error_code& ec)
-   {
-      set_on_resp3_error(t, ec);
-
-      if (is_aggregate(t)) {
-	 if (i_ != -1) {
-	    ec = adapter::error::nested_unsupported;
-	    return;
-	 }
-
-         auto const m = element_multiplicity(t);
-         result_->resize(m * aggregate_size);
-         ++i_;
-      } else {
-	 assert(aggregate_size == 1);
-
-         from_string(result_->at(i_), data, data_size, ec);
-         ++i_;
-      }
-   }
-};
-
-template <class Container>
-class list {
-private:
-   Container* result_;
-
-public:
-   list(Container* ref = nullptr): result_(ref) {}
-
-   void
-   operator()(type t,
-       std::size_t aggregate_size,
-       std::size_t depth,
-       char const* data,
-       std::size_t data_size,
-       std::error_code& ec)
-   {
-      set_on_resp3_error(t, ec);
-
-      if (is_aggregate(t)) {
-	 if (depth != 0) {
-	    ec = adapter::error::nested_unsupported;
-	    return;
-	 }
-         return;
-      }
-
-      assert(aggregate_size == 1);
-
-      if (depth != 1) {
-	 ec = adapter::error::nested_unsupported;
-	 return;
-      }
-
-      result_->push_back({});
-      from_string(result_->back(), data, data_size, ec);
-   }
-};
-
-template <class Container>
-class set {
-private:
-   Container* result_;
-   typename Container::iterator hint_;
-
-public:
-   set(Container* c = nullptr)
-   : result_(c)
-   , hint_(std::end(*c))
-   {}
-
-   void
-   operator()(type t,
-       std::size_t aggregate_size,
-       std::size_t depth,
-       char const* data,
-       std::size_t data_size,
-       std::error_code& ec)
-   {
-      set_on_resp3_error(t, ec);
-
-      if (t == type::set) {
-        assert(depth == 0);
-        return;
-      }
-
-      assert(!is_aggregate(t));
-
-      assert(depth == 1);
-      assert(aggregate_size == 1);
-
-      typename Container::key_type obj;
-      from_string(obj, data, data_size, ec);
-      if (hint_ == std::end(*result_)) {
-         auto const ret = result_->insert(std::move(obj));
-         hint_ = ret.first;
-      } else {
-         hint_ = result_->insert(hint_, std::move(obj));
-      }
-   }
-};
-
-template <class Container>
-class map {
-private:
-   Container* result_;
-   typename Container::iterator current_;
-   bool on_key_ = true;
-
-public:
-   map(Container* c = nullptr)
-   : result_(c)
-   , current_(std::end(*c))
-   {}
-
-   void
-   operator()(type t,
-       std::size_t aggregate_size,
-       std::size_t depth,
-       char const* data,
-       std::size_t data_size,
-       std::error_code& ec)
-   {
-      set_on_resp3_error(t, ec);
-
-      if (t == type::map) {
-        assert(depth == 0);
-        return;
-      }
-
-      assert(!is_aggregate(t));
-      assert(depth == 1);
-      assert(aggregate_size == 1);
-
-      if (on_key_) {
-         typename Container::key_type obj;
-         from_string(obj, data, data_size, ec);
-         current_ = result_->insert(current_, {std::move(obj), {}});
-      } else {
-         typename Container::mapped_type obj;
-         from_string(obj, data, data_size, ec);
-         current_->second = std::move(obj);
-      }
-
-      on_key_ = !on_key_;
-   }
-};
-
-} // detail
-} // adapter
-} // resp3
-} // aedis

aedis/resp3/adapter/error.hpp

@@ -1,87 +0,0 @@
-#pragma once
-
-# include <system_error>
-
-namespace aedis {
-namespace resp3 {
-namespace adapter {
-
-/** \brief Errors that may occurr when reading a response.
- *  \ingroup any
- */
-enum class error
-{
-   /// Expects a simple RESP3 type but got an aggregate.
-   expects_simple_type = 1,
-
-   /// Nested response not supported.
-   nested_unsupported,
-
-   /// Got RESP3 simple error.
-   simple_error,
-
-   /// Got RESP3 blob_error.
-   blob_error,
-
-   /// The tuple used as response has incompatible size.
-   incompatible_tuple_size,
-
-   /// Got RESP3 null type.
-   null
-};
-
-namespace detail {
-
-struct error_category_impl : std::error_category {
-
-   /// \todo Fix string lifetime.
-   char const* name() const noexcept override
-      { return "aedis.response_adapter"; }
-
-   // TODO: Move to .ipp
-   std::string message(int ev) const override
-   {
-      switch(static_cast<error>(ev)) {
-	 case error::expects_simple_type: return "Expects a simple RESP3 type";
-	 case error::nested_unsupported: return "Nested responses unsupported.";
-	 case error::simple_error: return "Got RESP3 simple-error.";
-	 case error::blob_error: return "Got RESP3 blob-error.";
-	 case error::incompatible_tuple_size: return "The tuple used as response has incompatible size.";
-	 case error::null: return "Got RESP3 null.";
-	 default: assert(false);
-      }
-   }
-};
-
-inline
-std::error_category const& adapter_category()
-{
-  static error_category_impl instance;
-  return instance;
-}
-
-} // detail
-
-inline
-std::error_code make_error_code(error e)
-{
-    static detail::error_category_impl const eci{};
-    return std::error_code{static_cast<int>(e), detail::adapter_category()};
-}
-
-inline
-std::error_condition make_error_condition(error e)
-{
-  return std::error_condition(static_cast<int>(e), detail::adapter_category());
-}
-
-} // adapter
-} // resp3
-} // aedis
-
-namespace std {
-
-template<>
-struct is_error_code_enum<::aedis::resp3::adapter::error> : std::true_type {};
-
-} // std

aedis/resp3/detail/composer.hpp

@@ -1,87 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <string>
-#include <string_view>
-#include <utility>
-
-namespace aedis {
-namespace resp3 {
-namespace detail {
-
-template <class>
-struct needs_to_string : std::true_type {};
-
-template <> struct needs_to_string<std::string> : std::false_type {};
-template <> struct needs_to_string<std::string_view> : std::false_type {};
-template <> struct needs_to_string<char const*> : std::false_type {};
-template <> struct needs_to_string<char*> : std::false_type {};
-
-template <std::size_t N>
-struct needs_to_string<char[N]> : std::false_type {};
-
-template <std::size_t N>
-struct needs_to_string<char const[N]> : std::false_type {};
-
-template <class Storage>
-void add_header(Storage& to, int size)
-{
-   // std::string does not support allocators.
-   using std::to_string;
-   auto const str = to_string(size);
-
-   to += "*";
-   to.append(std::cbegin(str), std::cend(str));
-   to += "\r\n";
-}
-
-template <class Storage>
-void add_bulk(Storage& to, std::string_view data)
-{
-   // std::string does not support allocators.
-   using std::to_string;
-   auto const str = to_string(std::size(data));
-
-   to += "$";
-   to.append(std::cbegin(str), std::cend(str));
-   to += "\r\n";
-   to += data;
-   to += "\r\n";
-}
-
-template <class Storage, class T>
-void add_bulk(Storage& to, T const& data, typename std::enable_if<needs_to_string<T>::value, bool>::type = false)
-{
-  using std::to_string;
-  auto const s = to_string(data);
-  add_bulk(to, s);
-}
-
-// Overload for pairs.
-// TODO: Overload for tuples.
-template <class Storage, class T1, class T2>
-void add_bulk(Storage& to, std::pair<T1, T2> const& pair)
-{
-  add_bulk(to, pair.first);
-  add_bulk(to, pair.second);
-}
-
-template <class>
-struct value_type_size {
-  static constexpr auto size = 1U;
-};
-
-template <class T, class U>
-struct value_type_size<std::pair<T, U>> {
-  static constexpr auto size = 2U;
-};
-
-} // detail
-} // resp3
-} // aedis

aedis/resp3/detail/impl/parser.ipp

@@ -1,40 +0,0 @@
-/* Copyright (c) 2019 - 2021 Marcelo Zimbres Silva (mzimbres at gmail dot com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <aedis/resp3/detail/parser.hpp>
-#include <aedis/resp3/type.hpp>
-
-namespace aedis {
-namespace resp3 {
-namespace detail {
-
-type to_type(char c)
-{
-   switch (c) {
-      case '!': return type::blob_error;
-      case '=': return type::verbatim_string;
-      case '$': return type::blob_string;
-      case ';': return type::streamed_string_part;
-      case '-': return type::simple_error;
-      case ':': return type::number;
-      case ',': return type::doublean;
-      case '#': return type::boolean;
-      case '(': return type::big_number;
-      case '+': return type::simple_string;
-      case '_': return type::null;
-      case '>': return type::push;
-      case '~': return type::set;
-      case '*': return type::array;
-      case '|': return type::attribute;
-      case '%': return type::map;
-      default: return type::invalid;
-   }
-}
-
-} // detail
-} // resp3
-} // aedis

aedis/resp3/detail/parser.hpp

@@ -1,199 +0,0 @@
-/* Copyright (c) 2019 - 2021 Marcelo Zimbres Silva (mzimbres at gmail dot com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <string_view>
-#include <charconv>
-#include <system_error>
-#include <limits>
-
-#include <aedis/resp3/error.hpp>
-
-namespace aedis {
-namespace resp3 {
-namespace detail {
-
-// Converts a wire-format RESP3 type (char) to a resp3 type.
-type to_type(char c);
-
-template <class ResponseAdapter>
-class parser {
-private:
-   static constexpr std::size_t max_embedded_depth = 5;
-
-   ResponseAdapter adapter_;
-
-   // The current depth. Simple data types will have depth 0, whereas
-   // the elements of aggregates will have depth 1. Embedded types
-   // will have increasing depth.
-   std::size_t depth_ = 0;
-
-   // The parser supports up to 5 levels of nested structures. The
-   // first element in the sizes stack is a sentinel and must be
-   // different from 1.
-   std::size_t sizes_[max_embedded_depth + 1] = {1};
-
-   // Contains the length expected in the next bulk read.
-   std::size_t bulk_length_ = (std::numeric_limits<std::size_t>::max)();
-
-   // The type of the next bulk. Contains type::invalid if no bulk is
-   // expected.
-   type bulk_ = type::invalid;
-
-public:
-   parser(ResponseAdapter adapter)
-   : adapter_{adapter}
-   {
-      sizes_[0] = 2; // The sentinel must be more than 1.
-   }
-
-   // Returns the number of bytes that have been consumed.
-   std::size_t
-   advance(char const* data, std::size_t n, std::error_code& ec)
-   {
-      if (bulk_ != type::invalid) {
-         n = bulk_length_ + 2;
-         switch (bulk_) {
-            case type::streamed_string_part:
-            {
-              if (bulk_length_ == 0) {
-                 sizes_[depth_] = 1;
-              } else {
-                 adapter_(bulk_, 1, depth_, data, bulk_length_, ec);
-		 if (ec)
-		    return 0;
-              }
-            } break;
-            default:
-	    {
-	       adapter_(bulk_, 1, depth_, data, bulk_length_, ec);
-	       if (ec)
-		  return 0;
-	    }
-         }
-
-         bulk_ = type::invalid;
-         --sizes_[depth_];
-
-      } else if (sizes_[depth_] != 0) {
-         auto const t = to_type(*data);
-         switch (t) {
-            case type::blob_error:
-            case type::verbatim_string:
-            case type::streamed_string_part:
-            {
-               auto const r =
-		  std::from_chars(data + 1, data + n - 2, bulk_length_);
-	       if (r.ec != std::errc()) {
-		  ec = error::not_a_number;
-		  return 0;
-	       }
-
-               bulk_ = t;
-            } break;
-            case type::blob_string:
-            {
-               if (*(data + 1) == '?') {
-		  // Trick: A streamed string is read as an aggregate
-		  // of infinite lenght. When the streaming is done
-		  // the server is supposed to send a part with lenght
-		  // 0.
-                  sizes_[++depth_] = (std::numeric_limits<std::size_t>::max)();
-               } else {
-		  auto const r =
-		     std::from_chars(data + 1, data + n - 2, bulk_length_);
-		  if (r.ec != std::errc()) {
-		     ec = error::not_a_number;
-		     return 0;
-		  }
-
-                  bulk_ = type::blob_string;
-               }
-            } break;
-            case type::simple_error:
-            case type::number:
-            case type::doublean:
-            case type::boolean:
-            case type::big_number:
-            case type::simple_string:
-            {
-               adapter_(t, 1, depth_, data + 1, n - 3, ec);
-	       if (ec)
-		  return 0;
-
-               --sizes_[depth_];
-            } break;
-            case type::null:
-            {
-               adapter_(type::null, 1, depth_, nullptr, 0, ec);
-	       if (ec)
-		  return 0;
-
-               --sizes_[depth_];
-            } break;
-            case type::push:
-            case type::set:
-            case type::array:
-            case type::attribute:
-            case type::map:
-            {
-	       std::size_t l;
-               auto const r = std::from_chars(data + 1, data + n - 2, l);
-	       if (r.ec != std::errc()) {
-		  ec = error::not_a_number;
-		  return 0;
-	       }
-
-               adapter_(t, l, depth_, nullptr, 0, ec);
-	       if (ec)
-		  return 0;
-
-               if (l == 0) {
-                  --sizes_[depth_];
-               } else {
-		  if (depth_ == max_embedded_depth) {
-		     ec = error::exceeeds_max_nested_depth;
-		     return 0;
-		  }
-
-                  ++depth_;
-
-                  sizes_[depth_] = l * element_multiplicity(t);
-               }
-            } break;
-            default:
-            {
-	       ec = error::invalid_type;
-	       return 0;
-            }
-         }
-      }
-      
-      while (sizes_[depth_] == 0) {
-         --depth_;
-         --sizes_[depth_];
-      }
-      
-      return n;
-   }
-
-   // Returns true when the parser is done with the current message.
-   auto done() const noexcept
-      { return depth_ == 0 && bulk_ == type::invalid; }
-
-   // The bulk type expected in the next read. If none is expected returns
-   // type::invalid.
-   auto bulk() const noexcept { return bulk_; }
-
-   // The length expected in the the next bulk.
-   auto bulk_length() const noexcept { return bulk_length_; }
-};
-
-} // detail
-} // resp3
-} // aedis

aedis/resp3/detail/read_ops.hpp

@@ -1,137 +0,0 @@
-/* Copyright (c) 2019 - 2021 Marcelo Zimbres Silva (mzimbres at gmail dot com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <string_view>
-
-#include <aedis/config.hpp>
-#include <aedis/resp3/detail/parser.hpp>
-#include <boost/core/ignore_unused.hpp>
-
-namespace aedis {
-namespace resp3 {
-namespace detail {
-
-// TODO: Use asio::coroutine.
-template <
-   class AsyncReadStream,
-   class DynamicBuffer,
-   class ResponseAdapter>
-class parse_op {
-private:
-   AsyncReadStream& stream_;
-   DynamicBuffer buf_;
-   parser<ResponseAdapter> parser_;
-   std::size_t consumed_;
-   int start_;
-
-public:
-   parse_op(AsyncReadStream& stream, DynamicBuffer buf, ResponseAdapter adapter)
-   : stream_ {stream}
-   , buf_ {buf}
-   , parser_ {adapter}
-   , consumed_{0}
-   , start_{1}
-   { }
-
-   template <class Self>
-   void operator()( Self& self
-                  , boost::system::error_code ec = {}
-                  , std::size_t n = 0)
-   {
-      switch (start_) {
-         for (;;) {
-            if (parser_.bulk() == type::invalid) {
-               case 1:
-               start_ = 0;
-               net::async_read_until(stream_, buf_, "\r\n", std::move(self));
-               return;
-            }
-
-	    // On a bulk read we can't read until delimiter since the
-	    // payload may contain the delimiter itself so we have to
-	    // read the whole chunk. However if the bulk blob is small
-	    // enough it may be already on the buffer (from the last
-	    // read), in which case there is no need of initiating
-	    // another async op, otherwise we have to read the missing
-	    // bytes.
-            if (std::size(buf_) < (parser_.bulk_length() + 2)) {
-               start_ = 0;
-	       auto const s = std::size(buf_);
-	       auto const l = parser_.bulk_length();
-	       auto const to_read = l + 2 - s;
-               buf_.grow(to_read);
-               net::async_read(stream_, buf_.data(s, to_read), net::transfer_all(), std::move(self));
-               return;
-            }
-
-            default:
-	    {
-	       if (ec) {
-		  self.complete(ec, 0);
-		  return;
-	       }
-
-	       n = parser_.advance((char const*)buf_.data(0, n).data(), n, ec);
-	       if (ec) {
-		  self.complete(ec, 0);
-		  return;
-	       }
-
-	       buf_.consume(n);
-	       consumed_ += n;
-	       if (parser_.done()) {
-		  self.complete({}, consumed_);
-		  return;
-	       }
-	    }
-         }
-      }
-   }
-};
-
-// TODO: Use asio::coroutine.
-template <class AsyncReadStream, class DynamicBuffer>
-class type_op {
-private:
-   AsyncReadStream& stream_;
-   DynamicBuffer buf_;
-
-public:
-   type_op(AsyncReadStream& stream, DynamicBuffer buf)
-   : stream_ {stream}
-   , buf_ {buf}
-   { }
-
-   template <class Self>
-   void operator()( Self& self
-                  , boost::system::error_code ec = {}
-                  , std::size_t n = 0)
-   {
-      boost::ignore_unused(n);
-
-      if (ec) {
-	 self.complete(ec, type::invalid);
-         return;
-      }
-
-      if (std::size(buf_) == 0) {
-	 net::async_read_until(stream_, buf_, "\r\n", std::move(self));
-	 return;
-      }
-
-      auto const* data = (char const*)buf_.data(0, n).data();
-      auto const type = to_type(*data);
-      self.complete(ec, type);
-      return;
-   }
-};
-
-} // detail
-} // resp3
-} // aedis

aedis/resp3/error.hpp

@@ -1,80 +0,0 @@
-#pragma once
-
-# include <system_error>
-
-/// \file error.hpp
-
-namespace aedis {
-namespace resp3 {
-
-/** \brief RESP3 parsing errors.
- *  \ingroup any
- */
-enum class error
-{
-   /// Invalid RESP3 type.
-   invalid_type = 1,
-
-   /// Can't parse the string as an integer.
-   not_a_number,
-
-   /// Received less bytes than expected.
-   unexpected_read_size,
-
-   /// The maximum depth of a nested response was exceeded.
-   exceeeds_max_nested_depth
-};
-
-namespace detail {
-
-struct error_category_impl : std::error_category {
-
-   char const* name() const noexcept override
-      { return "aedis.resp3"; }
-
-   std::string message(int ev) const override
-   {
-      switch(static_cast<error>(ev)) {
-	 case error::invalid_type: return "Invalid resp3 type.";
-	 case error::not_a_number: return "Can't convert string to number.";
-	 case error::unexpected_read_size: return "Unexpected read size.";
-	 case error::exceeeds_max_nested_depth: return "Exceeds the maximum number of nested responses.";
-	 default: assert(false);
-      }
-   }
-};
-
-inline
-std::error_category const& category()
-{
-  static error_category_impl instance;
-  return instance;
-}
-
-} // detail
-
-/** \brief Converts an error in an std::error_code object.
- *  \ingroup any
- */
-inline
-std::error_code make_error_code(error e)
-{
-    static detail::error_category_impl const eci{};
-    return std::error_code{static_cast<int>(e), detail::category()};
-}
-
-inline
-std::error_condition make_error_condition(error e)
-{
-  return std::error_condition(static_cast<int>(e), detail::category());
-}
-
-} // resp3
-} // aedis
-
-namespace std {
-
-template<>
-struct is_error_code_enum<::aedis::resp3::error> : std::true_type {};
-
-} // std

aedis/resp3/impl/node.ipp

@@ -1,67 +0,0 @@
-/* Copyright (c) 2019 - 2022 Marcelo Zimbres Silva (mzimbres at gmail dot com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <aedis/resp3/node.hpp>
-
-namespace aedis {
-namespace resp3 {
-
-std::string to_string(node const& in)
-{
-   std::string out;
-   out += std::to_string(in.depth);
-   out += '\t';
-   out += to_string(in.data_type);
-   out += '\t';
-   out += std::to_string(in.aggregate_size);
-   out += '\t';
-   if (!is_aggregate(in.data_type))
-      out += in.data;
-
-   return out;
-}
-
-bool operator==(node const& a, node const& b)
-{
-   return a.aggregate_size == b.aggregate_size
-       && a.depth == b.depth
-       && a.data_type == b.data_type
-       && a.data == b.data;
-};
-
-std::ostream& operator<<(std::ostream& os, node const& o)
-{
-   os << to_string(o);
-   return os;
-}
-
-std::ostream& operator<<(std::ostream& os, std::vector<node> const& r)
-{
-   os << to_string(r);
-   return os;
-}
-
-// TODO: Output like in redis-cli.
-std::string to_string(std::vector<node> const& vec)
-{
-   if (std::empty(vec))
-      return {};
-
-   auto begin = std::cbegin(vec);
-   std::string res;
-   for (; begin != std::prev(std::cend(vec)); ++begin) {
-      res += to_string(*begin);
-      res += '\n';
-   }
-
-   res += to_string(*begin);
-   return res;
-}
-} // resp3
-} // aedis

aedis/resp3/impl/type.ipp

@@ -1,68 +0,0 @@
-/* Copyright (c) 2019 - 2021 Marcelo Zimbres Silva (mzimbres at gmail dot com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <aedis/resp3/type.hpp>
-
-#include <cassert>
-
-namespace aedis {
-namespace resp3 {
-
-char const* to_string(type t)
-{
-   static char const* table[] =
-   { "array"
-   , "push"
-   , "set"
-   , "map"
-   , "attribute"
-   , "simple_string"
-   , "simple_error"
-   , "number"
-   , "doublean"
-   , "boolean"
-   , "big_number"
-   , "null"
-   , "blob_error"
-   , "verbatim_string"
-   , "blob_string"
-   , "streamed_string_part"
-   , "invalid"
-   };
-
-   return table[static_cast<int>(t)];
-}
-
-std::ostream& operator<<(std::ostream& os, type t)
-{
-   os << to_string(t);
-   return os;
-}
-
-bool is_aggregate(type t)
-{
-   switch (t) {
-      case type::array:
-      case type::push:
-      case type::set:
-      case type::map:
-      case type::attribute: return true;
-      default: return false;
-   }
-}
-
-std::size_t element_multiplicity(type t)
-{
-   switch (t) {
-      case type::map:
-      case type::attribute: return 2ULL;
-      default: return 1ULL;
-   }
-}
-
-} // resp3
-} // aedis

aedis/resp3/node.hpp

@@ -1,68 +0,0 @@
-/* Copyright (c) 2019 - 2022 Marcelo Zimbres Silva (mzimbres at gmail dot com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <aedis/resp3/type.hpp>
-
-#include <string>
-#include <vector>
-
-namespace aedis {
-namespace resp3 {
-
-/** \brief A node in the response tree.
- *  \ingroup any
- *
- *  Redis responses are the pre-order view of the response tree (see
- *  https://en.wikipedia.org/wiki/Tree_traversal#Pre-order,_NLR).
- */
-struct node {
-   /// The RESP3 type of the data in this node.
-   type data_type;
-
-   /// The number of elements of an aggregate.
-   std::size_t aggregate_size;
-
-   /// The depth of this node in the response tree.
-   std::size_t depth;
-
-   /// The actual data. For aggregate data types this is always empty.
-   std::string data;
-};
-
-/** \brief Converts the node to a string.
- *  \ingroup any
- *
- *  \param obj The node object.
- */
-std::string to_string(node const& obj);
-
-/** \brief Compares a node for equality.
- *  \ingroup any
- */
-bool operator==(node const& a, node const& b);
-
-/** \brief Writes the node to the stream.
- *  \ingroup any
- *
- *  NOTE: Binary data is not converted to text.
- */
-std::ostream& operator<<(std::ostream& os, node const& o);
-
-/** \brief Writes the response to the output stream
- *  \ingroup any
- */
-std::string to_string(std::vector<node> const& vec);
-
-/** \brief Writes the response to the output stream
- *  \ingroup any
- */
-std::ostream& operator<<(std::ostream& os, std::vector<node> const& r);
-
-} // resp3
-} // aedis

aedis/resp3/read.hpp

@@ -1,197 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <aedis/config.hpp>
-#include <aedis/resp3/type.hpp>
-#include <aedis/resp3/adapt.hpp>
-#include <aedis/resp3/response_traits.hpp>
-#include <aedis/resp3/detail/parser.hpp>
-#include <aedis/resp3/detail/read_ops.hpp>
-
-#include <boost/asio/yield.hpp>
-
-namespace aedis {
-namespace resp3 {
-
-/** \brief Read the response to a command sychronously.
- *  \ingroup functions
- *
- *  This function has to be called once for each command in the
- *  request until the whole request has been read.
- *
- *  \param stream The stream from which to read.
- *  \param buf Auxiliary read buffer, usually a `std::string`.
- *  \param adapter The response adapter, see adapt.
- *  \param ec Error if any.
- *  \returns The number of bytes that have been consumed from the
- *  auxiliary buffer.
- */
-template <
-  class SyncReadStream,
-  class DynamicBuffer,
-  class ResponseAdapter
-  >
-std::size_t
-read(
-   SyncReadStream& stream,
-   DynamicBuffer buf,
-   ResponseAdapter adapter,
-   boost::system::error_code& ec)
-{
-   detail::parser p {adapter};
-   std::size_t n = 0;
-   std::size_t consumed = 0;
-   do {
-      if (p.bulk() == type::invalid) {
-	 n = net::read_until(stream, buf, "\r\n", ec);
-	 if (ec)
-	    return 0;
-
-	 if (n < 3) {
-            ec = error::unexpected_read_size;
-            return 0;
-         }
-      } else {
-	 auto const s = std::size(buf);
-	 auto const l = p.bulk_length();
-	 if (s < (l + 2)) {
-	    auto const to_read = l + 2 - s;
-	    buf.grow(to_read);
-	    n = net::read(stream, buf.data(s, to_read), ec);
-	    if (ec)
-	       return 0;
-
-            if (n < to_read) {
-               ec = error::unexpected_read_size;
-               return 0;
-            }
-	 }
-      }
-
-      std::error_code ec;
-      auto const* data = (char const*) buf.data(0, n).data();
-      n = p.advance(data, n, ec);
-      if (ec)
-         return 0;
-
-      buf.consume(n);
-      consumed += n;
-   } while (!p.done());
-
-   return consumed;
-}
-
-/** \brief Reads the reponse to a command.
- *  \ingroup functions
- *  
- *  This function has to be called once for each command in the
- *  request until the whole request has been read.
- *
- *  \param stream The stream from which to read.
- *  \param buf Auxiliary read buffer, usually a `std::string`.
- *  \param adapter The response adapter, see adapt.
- *  \returns The number of bytes that have been consumed from the
- *  auxiliary buffer.
- */
-template<
-   class SyncReadStream,
-   class DynamicBuffer,
-   class ResponseAdapter = response_traits<void>::adapter_type>
-std::size_t
-read(
-   SyncReadStream& stream,
-   DynamicBuffer buf,
-   ResponseAdapter adapter = adapt())
-{
-   boost::system::error_code ec;
-   auto const n = resp3::read(stream, buf, adapter, ec);
-
-   if (ec)
-       BOOST_THROW_EXCEPTION(boost::system::system_error{ec});
-
-   return n;
-}
-
-/** @brief Reads the response to a Redis command asynchronously.
- *  \ingroup functions
- *
- *  This function has to be called once for each command in the
- *  request until the whole request has been read.
- *
- *  The completion handler must have the following signature.
- *
- *  @code
- *  void(boost::system::error_code, std::size_t)
- *  @endcode
- *
- *  The second argumet to the completion handler is the number of
- *  bytes that have been consumed in the read operation.
- *
- *  \param stream The stream from which to read.
- *  \param buffer Auxiliary read buffer, usually a `std::string`.
- *  \param adapter The response adapter, see adapt.
- *  \param token The completion token.
- */
-template <
-   class AsyncReadStream,
-   class DynamicBuffer,
-   class ResponseAdapter = response_traits<void>::adapter_type,
-   class CompletionToken = net::default_completion_token_t<typename AsyncReadStream::executor_type>
-   >
-auto async_read(
-   AsyncReadStream& stream,
-   DynamicBuffer buffer,
-   ResponseAdapter adapter = adapt(),
-   CompletionToken&& token =
-      net::default_completion_token_t<typename AsyncReadStream::executor_type>{})
-{
-   return net::async_compose
-      < CompletionToken
-      , void(boost::system::error_code, std::size_t)
-      >(detail::parse_op<AsyncReadStream, DynamicBuffer, ResponseAdapter> {stream, buffer, adapter},
-        token,
-        stream);
-}
-
-/** \brief Reads the RESP3 type of the next incomming.
- *  \ingroup functions
- *
- *  This function won't consume any data from the buffer. The
- *  completion handler must have the following signature.
- *
- *  @code
-    void(boost::system::error_code, type)
- *  @endcode
- *  
- *  \param stream The stream from which to read.
- *  \param buffer Auxiliary read buffer, usually a `std::string`.
- *  \param token The completion token.
- */
-template <
-   class AsyncReadStream,
-   class DynamicBuffer,
-   class CompletionToken =
-      net::default_completion_token_t<typename AsyncReadStream::executor_type>
-   >
-auto async_read_type(
-   AsyncReadStream& stream,
-   DynamicBuffer buffer,
-   CompletionToken&& token =
-      net::default_completion_token_t<typename AsyncReadStream::executor_type>{})
-{
-   return net::async_compose
-      < CompletionToken
-      , void(boost::system::error_code, type)
-      >(detail::type_op<AsyncReadStream, DynamicBuffer> {stream, buffer}, token, stream);
-}
-
-} // resp3
-} // aedis
-
-#include <boost/asio/unyield.hpp>

aedis/resp3/response_traits.hpp

@@ -1,229 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <set>
-#include <array>
-#include <unordered_set>
-#include <list>
-#include <deque>
-#include <vector>
-#include <charconv>
-#include <tuple>
-#include <variant>
-
-#include <boost/mp11.hpp>
-
-#include <aedis/resp3/type.hpp>
-#include <aedis/resp3/adapter/detail/adapters.hpp>
-#include <aedis/resp3/adapter/error.hpp>
-
-namespace aedis {
-namespace resp3 {
-
-/** \brief Traits class for response objects.
- *  \ingroup any
- */
-template <class T>
-struct response_traits
-{
-   /// The response type.
-   using response_type = T;
-
-   /// The adapter type.
-   using adapter_type = adapter::detail::simple<response_type>;
-
-   /// Returns an adapter for the reponse r
-   static auto adapt(response_type& r) noexcept { return adapter_type{&r}; }
-};
-
-/// Template typedef for response_traits.
-template <class T>
-using response_traits_t = typename response_traits<T>::adapter_type;
-
-template <class T>
-struct response_traits<std::optional<T>>
-{
-   using response_type = std::optional<T>;
-   using adapter_type = adapter::detail::simple_optional<typename response_type::value_type>;
-   static auto adapt(response_type& i) noexcept { return adapter_type{&i}; }
-};
-
-template <class T, class Allocator>
-struct response_traits<std::vector<T, Allocator>>
-{
-   using response_type = std::vector<T, Allocator>;
-   using adapter_type = adapter::detail::vector<response_type>;
-   static auto adapt(response_type& v) noexcept { return adapter_type{&v}; }
-};
-
-template <>
-struct response_traits<node>
-{
-   using response_type = node;
-   using adapter_type = adapter::detail::adapter_node<response_type>;
-   static auto adapt(response_type& v) noexcept { return adapter_type{&v}; }
-};
-
-template <class Allocator>
-struct response_traits<std::vector<node, Allocator>>
-{
-   using response_type = std::vector<node, Allocator>;
-   using adapter_type = adapter::detail::general<response_type>;
-   static auto adapt(response_type& v) noexcept { return adapter_type{&v}; }
-};
-
-template <class T, class Allocator>
-struct response_traits<std::list<T, Allocator>>
-{
-   using response_type = std::list<T, Allocator>;
-   using adapter_type = adapter::detail::list<response_type>;
-   static auto adapt(response_type& v) noexcept { return adapter_type{&v}; }
-};
-
-template <class T, class Allocator>
-struct response_traits<std::deque<T, Allocator>>
-{
-   using response_type = std::deque<T, Allocator>;
-   using adapter_type = adapter::detail::list<response_type>;
-   static auto adapt(response_type& v) noexcept { return adapter_type{&v}; }
-};
-
-template <class Key, class Compare, class Allocator>
-struct response_traits<std::set<Key, Compare, Allocator>>
-{
-   using response_type = std::set<Key, Compare, Allocator>;
-   using adapter_type = adapter::detail::set<response_type>;
-   static auto adapt(response_type& s) noexcept { return adapter_type{&s}; }
-};
-
-template <class Key, class Hash, class KeyEqual, class Allocator>
-struct response_traits<std::unordered_set<Key, Hash, KeyEqual, Allocator>>
-{
-   using response_type = std::unordered_set<Key, Hash, KeyEqual, Allocator>;
-   using adapter_type = adapter::detail::set<response_type>;
-   static auto adapt(response_type& s) noexcept { return adapter_type{&s}; }
-};
-
-template <class Key, class T, class Compare, class Allocator>
-struct response_traits<std::map<Key, T, Compare, Allocator>>
-{
-   using response_type = std::map<Key, T, Compare, Allocator>;
-   using adapter_type = adapter::detail::map<response_type>;
-   static auto adapt(response_type& s) noexcept { return adapter_type{&s}; }
-};
-
-template <class Key, class Hash, class KeyEqual, class Allocator>
-struct response_traits<std::unordered_map<Key, Hash, KeyEqual, Allocator>>
-{
-   using response_type = std::unordered_map<Key, Hash, KeyEqual, Allocator>;
-   using adapter_type = adapter::detail::map<response_type>;
-   static auto adapt(response_type& s) noexcept { return adapter_type{&s}; }
-};
-
-template <>
-struct response_traits<void>
-{
-   using response_type = void;
-   using adapter_type = adapter::detail::ignore;
-   static auto adapt() noexcept { return adapter_type{}; }
-};
-
-namespace adapter {
-namespace detail {
-
-// Duplicated here to avoid circular include dependency.
-template<class T>
-auto internal_adapt(T& t) noexcept
-   { return response_traits<T>::adapt(t); }
-
-template <std::size_t N>
-struct assigner {
-  template <class T1, class T2>
-  static void assign(T1& dest, T2& from)
-  {
-     dest[N].template emplace<N>(internal_adapt(std::get<N>(from)));
-     assigner<N - 1>::assign(dest, from);
-  }
-};
-
-template <>
-struct assigner<0> {
-  template <class T1, class T2>
-  static void assign(T1& dest, T2& from)
-  {
-     dest[0] = internal_adapt(std::get<0>(from));
-  }
-};
-
-template <class Tuple>
-class flat_transaction_adapter {
-private:
-   using variant_type =
-      boost::mp11::mp_rename<boost::mp11::mp_transform<response_traits_t, Tuple>, std::variant>;
-
-   std::size_t i_ = 0;
-   std::size_t aggregate_size_ = 0;
-   std::array<variant_type, std::tuple_size<Tuple>::value> adapters_;
-
-public:
-   flat_transaction_adapter(Tuple* r)
-      { assigner<std::tuple_size<Tuple>::value - 1>::assign(adapters_, *r); }
-
-   void count(type t, std::size_t aggregate_size, std::size_t depth)
-   {
-      if (depth == 1) {
-         if (is_aggregate(t))
-            aggregate_size_ = aggregate_size;
-         else
-            ++i_;
-
-         return;
-      }
-
-      if (--aggregate_size_ == 0)
-         ++i_;
-   }
-
-   void
-   operator()(
-      type t,
-      std::size_t aggregate_size,
-      std::size_t depth,
-      char const* data,
-      std::size_t size,
-      std::error_code& ec)
-   {
-      if (depth == 0) {
-         if (aggregate_size != std::tuple_size<Tuple>::value) {
-	    ec = adapter::error::incompatible_tuple_size;
-	    return;
-	 }
-
-         return;
-      }
-
-      std::visit([&](auto& arg){arg(t, aggregate_size, depth, data, size, ec);}, adapters_[i_]);
-      count(t, aggregate_size, depth);
-   }
-};
-
-} // detail
-} // adapter
-
-// The adapter of responses to transactions, move it to its own header?
-template <class... Ts>
-struct response_traits<std::tuple<Ts...>>
-{
-   using response_type = std::tuple<Ts...>;
-   using adapter_type = adapter::detail::flat_transaction_adapter<response_type>;
-   static auto adapt(response_type& r) noexcept { return adapter_type{&r}; }
-};
-
-} // resp3
-} // aedis

aedis/resp3/serializer.hpp

@@ -1,157 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <aedis/resp3/detail/composer.hpp>
-
-namespace aedis {
-namespace resp3 {
-
-/** @brief Creates a Redis request from user data.
- *  \ingroup any
- *  
- *  A request is composed of one or more redis commands and is
- *  referred to in the redis documentation as a pipeline, see
- *  https://redis.io/topics/pipelining.
- *
- *  For example
- *
- *  @code
- *  std::string request;
- *  auto sr = make_serializer(request);
- *  sr.push(command::hello, 3);
- *  sr.push(command::flushall);
- *  sr.push(command::ping);
- *  sr.push(command::incr, "key");
- *  sr.push(command::quit);
- *  co_await async_write(socket, buffer(request));
- *  @endcode
- *
- *  \tparam Storage The storage type. This is currently a \c std::string.
- *  \tparam Command The command to serialize.
- *
- *  \remarks  Non-string types will be converted to string by using \c
- *  to_string, which must be made available over ADL.
- */
-
-// NOTE: Consider adding an overload for containers.
-//
-// TODO: Should we detect any std::pair or tuple in the type in the parameter
-// pack to calculate the header size correctly?
-//
-// NOTE: For some commands like hset it would be a good idea to assert
-// the value type is a pair.
-template <class Storage, class Command>
-class serializer {
-private:
-   Storage* request_;
-
-public:
-   /** \brief Constructor
-    *  
-    *  \param storage Object where the serialized request will be
-    *  stored.
-    */
-   serializer(Storage& storage) : request_(&storage) {}
-
-   /** @brief Appends a new command to the end of the request.
-    *
-    *  For example
-    *
-    *  \code
-    *  std::string request;
-    *  auto sr = make_serializer<command>(request);
-    *  sr.push(command::set, "key", "some string", "EX", "2");
-    *  \endcode
-    *
-    *  will add the \c set command with payload "some string" and an
-    *  expiration of 2 seconds.
-    *
-    *  \param cmd The redis command.
-    *  \param args The arguments of the Redis command.
-    *
-    */
-   template <class... Ts>
-   void push(Command cmd, Ts const&... args)
-   {
-      auto constexpr pack_size = sizeof...(Ts);
-      detail::add_header(*request_, 1 + pack_size);
-
-      detail::add_bulk(*request_, to_string(cmd));
-      (detail::add_bulk(*request_, args), ...);
-   }
-
-   /** @brief Appends a new command to the end of the request.
-    *  
-    *  This overload is useful for commands that require a key. For example
-    *
-    *  \code{.cpp}
-    *  std::map<std::string, std::string> map
-    *     { {"key1", "value1"}
-    *     , {"key2", "value2"}
-    *     , {"key3", "value3"}
-    *     };
-    *
-    *  request req;
-    *  req.push_range(command::hset, "key", std::cbegin(map), std::cend(map));
-    *  \endcode
-    *  
-    *  \param cmd The Redis command
-    *  \param key The key the Redis command refers to.
-    *  \param begin Iterator to the begin of the range.
-    *  \param end Iterator to the end of the range.
-    */
-   template <class Key, class ForwardIterator>
-   void push_range(Command cmd, Key const& key, ForwardIterator begin, ForwardIterator end)
-   {
-      using value_type = typename std::iterator_traits<ForwardIterator>::value_type;
-
-      auto constexpr size = detail::value_type_size<value_type>::size;
-      auto const distance = std::distance(begin, end);
-      detail::add_header(*request_, 2 + size * distance);
-      detail::add_bulk(*request_, to_string(cmd));
-      detail::add_bulk(*request_, key);
-
-      for (; begin != end; ++begin)
-	 detail::add_bulk(*request_, *begin);
-   }
-
-   /** @brief Appends a new command to the end of the request.
-    *
-    *  This overload is useful for commands that don't have a key. For
-    *  example
-    *
-    *  \code
-    *  std::set<std::string> channels
-    *     { "channel1" , "channel2" , "channel3" }
-    *
-    *  request req;
-    *  req.push(command::subscribe, std::cbegin(channels), std::cedn(channels));
-    *  \endcode
-    *
-    *  \param cmd The Redis command
-    *  \param begin Iterator to the begin of the range.
-    *  \param end Iterator to the end of the range.
-    */
-   template <class ForwardIterator>
-   void push_range(Command cmd, ForwardIterator begin, ForwardIterator end)
-   {
-      using value_type = typename std::iterator_traits<ForwardIterator>::value_type;
-
-      auto constexpr size = detail::value_type_size<value_type>::size;
-      auto const distance = std::distance(begin, end);
-      detail::add_header(*request_, 1 + size * distance);
-      detail::add_bulk(*request_, to_string(cmd));
-
-      for (; begin != end; ++begin)
-	 detail::add_bulk(*request_, *begin);
-   }
-};
-
-} // resp3
-} // aedis

aedis/resp3/type.hpp

@@ -1,88 +0,0 @@
-/* Copyright (c) 2019 - 2021 Marcelo Zimbres Silva (mzimbres at gmail dot com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <ostream>
-#include <vector>
-#include <string>
-
-namespace aedis {
-namespace resp3 {
-
-/** \brief RESP3 types
-    \ingroup any
-  
-    The RESP3 full specification can be found at https://github.com/antirez/RESP3/blob/74adea588783e463c7e84793b325b088fe6edd1c/spec.md
- */
-enum class type
-{ /// Aggregate
-  array,
-  /// Aaggregate
-  push,
-  /// Aggregate
-  set,
-  /// Aggregate
-  map,
-  /// Aggregate
-  attribute,
-  /// Simple
-  simple_string,
-  /// Simple
-  simple_error,
-  /// Simple
-  number,
-  /// Simple
-  doublean,
-  /// Simple
-  boolean,
-  /// Simple
-  big_number,
-  /// Simple
-  null,
-  /// Simple
-  blob_error,
-  /// Simple
-  verbatim_string,
-  /// Simple
-  blob_string,
-  /// Simple
-  streamed_string_part,
-  /// Invalid
-  invalid
-};
-
-/** \brief Returns the string representation of the type.
- *  \ingroup any
- *  \param t RESP3 type.
- */
-char const* to_string(type t);
-
-/** \brief Writes the type to the output stream.
- *  \ingroup operators
- *  \param os Output stream.
- *  \param t RESP3 type.
- */
-std::ostream& operator<<(std::ostream& os, type t);
-
-/** \brief Returns true if the data type is an aggregate.
- *  \ingroup any
- *  \param t RESP3 type.
- */
-bool is_aggregate(type t);
-
-/** @brief Returns the element multilicity.
- *  \ingroup any
- *  \param t RESP3 type.
- *
- *  For type map and attribute this value is 2, all other types have
- *  1.
- */
-std::size_t element_multiplicity(type t);
-
-} // resp3
-} // aedis

aedis/sentinel/command.hpp

@@ -1,79 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <ostream>
-
-namespace aedis {
-namespace sentinel {
-
-/** \brief Sentinel commands.
- *  \ingroup any
- *
- *  For a full list of commands see https://redis.io/topics/sentinel
- *
- *  \remark The list of commands below are read from Redis with the
- *  help of the command \c command.
- */
-enum class command {
-   /// https://redis.io/commands/acl
-   acl,
-   /// https://redis.io/commands/auth
-   auth,
-   /// https://redis.io/commands/client
-   client,
-   /// https://redis.io/commands/command
-   command,
-   /// https://redis.io/commands/hello
-   hello,
-   /// https://redis.io/commands/info
-   info,
-   /// https://redis.io/commands/ping
-   ping,
-   /// https://redis.io/commands/psubscribe
-   psubscribe,
-   /// https://redis.io/commands/publish
-   publish,
-   /// https://redis.io/commands/punsubscribe
-   punsubscribe,
-   /// https://redis.io/commands/role
-   role,
-   /// https://redis.io/topics/sentinel
-   sentinel,
-   /// https://redis.io/commands/shutdown
-   shutdown,
-   /// https://redis.io/commands/subscribe
-   subscribe,
-   /// https://redis.io/commands/unsubscribe
-   unsubscribe,
-   /// Unknown/invalid command.
-   unknown
-};
-
-/** \brief Converts a sentinel command to a string
- *  \ingroup any
- *
- *  \param c The command to convert.
- */
-char const* to_string(command c);
-
-/** \brief Write the text for a sentinel command name to an output stream.
- *  \ingroup operators
- *
- *  \param os Output stream.
- *  \param c Sentinel command
- */
-std::ostream& operator<<(std::ostream& os, command c);
-
-/** \brief Returns true for sentinel commands with push response.
- *  \ingroup any
- */
-bool has_push_response(command cmd);
-
-} // sentinel
-} // aedis

aedis/sentinel/impl/command.ipp

@@ -1,56 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <aedis/sentinel/command.hpp>
-
-namespace aedis {
-namespace sentinel {
-
-char const* to_string(command c)
-{
-   static char const* table[] = {
-      "ACL",
-      "AUTH",
-      "CLIENT",
-      "COMMAND",
-      "HELLO",
-      "INFO",
-      "PING",
-      "PSUBSCRIBE",
-      "PUBLISH",
-      "PUNSUBSCRIBE",
-      "ROLE",
-      "SENTINEL",
-      "SHUTDOWN",
-      "SUBSCRIBE",
-      "UNSUBSCRIBE",
-   };
-
-   return table[static_cast<int>(c)];
-}
-
-std::ostream& operator<<(std::ostream& os, command c)
-{
-   os << to_string(c);
-   return os;
-}
-
-bool has_push_response(command cmd)
-{
-   switch (cmd) {
-      case command::subscribe:
-      case command::unsubscribe:
-      case command::psubscribe:
-      return true;
-
-      default:
-      return false;
-   }
-}
-
-} // sentinel
-} // aedis

aedis/src.hpp

@@ -1,15 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-// Include this file in no more than one source file in your application.
-
-#include <aedis/redis/impl/command.ipp>
-#include <aedis/sentinel/impl/command.ipp>
-#include <aedis/resp3/impl/type.ipp>
-#include <aedis/resp3/impl/node.ipp>
-#include <aedis/redis/experimental/impl/client.ipp>
-#include <aedis/resp3/detail/impl/parser.ipp>

benchmarks/CMakeLists.txt

@@ -0,0 +1,20 @@
+
+add_library(benchmarks_options INTERFACE)
+target_link_libraries(benchmarks_options INTERFACE boost_redis_src)
+target_link_libraries(benchmarks_options INTERFACE boost_redis_project_options)
+target_compile_features(benchmarks_options INTERFACE cxx_std_20)
+
+add_executable(echo_server_client cpp/asio/echo_server_client.cpp)
+target_link_libraries(echo_server_client PRIVATE benchmarks_options)
+
+add_executable(echo_server_direct cpp/asio/echo_server_direct.cpp)
+target_link_libraries(echo_server_direct PRIVATE benchmarks_options)
+
+# TODO
+#=======================================================================
+
+#.PHONY: bench
+#bench:
+#	pdflatex --jobname=echo-f0 benchmarks/benchmarks.tex
+#	pdflatex --jobname=echo-f1 benchmarks/benchmarks.tex
+# pdftoppm {input.pdf} {output.file} -png

benchmarks/benchmarks.tex

@@ -0,0 +1,71 @@
+\documentclass{article}
+\usepackage{pgfplots}
+\pgfrealjobname{echo}
+\pgfplotsset{compat=newest}
+
+\begin{document}
+
+\beginpgfgraphicnamed{echo-f0}
+% time ./echo_server_client 1000 5000
+\begin{tikzpicture}[scale=1.0]
+  \begin{axis}[
+    y dir=reverse,
+    %xbar stacked,
+    xbar, xmin=0,
+    %hide x axis,
+    bar shift=0pt,
+    width=15cm, height=6cm, enlarge y limits=0.5,
+    title={TCP Echo Server Performance},
+    xlabel={Seconds},
+    symbolic y coords={Asio,Tokio,Go,Libuv,Nodejs},
+    ytick=data,
+    %bar width=1cm,
+    nodes near coords,
+    nodes near coords align={horizontal},
+    ]
+    \addplot coordinates {
+       (29.5,Asio)
+       (30.7,Tokio)
+       (35.6,Go)
+       (43.6,Libuv)
+       (74.2,Nodejs)
+    };
+  \end{axis}
+\end{tikzpicture}
+\endpgfgraphicnamed
+
+\beginpgfgraphicnamed{echo-f1}
+%$ time ./echo_server_client 1000 1000
+\begin{tikzpicture}[scale=1.0]
+  \begin{axis}[
+    y dir=reverse,
+    %xbar stacked,
+    xbar, xmin=0,
+    %hide x axis,
+    bar shift=0pt,
+    width=12cm, height=6cm, enlarge y limits=0.5,
+     title={TCP Echo Server Performance (over Redis)},
+    xlabel={Seconds},
+    symbolic y coords={Aedis,Rust-rs,Libuv,Node-redis,Go-redis},
+    ytick=data,
+    %bar width=1cm,
+    nodes near coords,
+    nodes near coords align={horizontal},
+    ]
+    \addplot coordinates {
+       (12.6,Aedis)
+       (28.8,Node-redis)
+       (352.4,Go-redis)
+    };
+    %\addplot coordinates {
+    %   (30.0,Asio)
+    %   (90.6,Rust-rs)
+    %   (0.0,Libuv)
+    %   (68.9,Nodejs)
+    %   (0.0,Go)
+    %};
+  \end{axis}
+\end{tikzpicture}
+\endpgfgraphicnamed
+
+\end{document}

benchmarks/c/libuv/README.md

@@ -0,0 +1,7 @@
+This example was taken from
+
+   https://github.com/libuv/libuv/tree/v1.x/docs/code/tcp-echo-server
+
+To build it run, for example
+
+   $ gcc echo_server_direct.c -luv -O2 -o echo_server_direct

benchmarks/c/libuv/echo_server_direct.c

@@ -0,0 +1,87 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <uv.h>
+
+#define DEFAULT_PORT 55555
+#define DEFAULT_BACKLOG 1024
+
+uv_loop_t *loop;
+struct sockaddr_in addr;
+
+typedef struct {
+    uv_write_t req;
+    uv_buf_t buf;
+} write_req_t;
+
+void free_write_req(uv_write_t *req) {
+    write_req_t *wr = (write_req_t*) req;
+    free(wr->buf.base);
+    free(wr);
+}
+
+void alloc_buffer(uv_handle_t *handle, size_t suggested_size, uv_buf_t *buf) {
+    buf->base = (char*) malloc(suggested_size);
+    buf->len = suggested_size;
+}
+
+void on_close(uv_handle_t* handle) {
+    free(handle);
+}
+
+void echo_write(uv_write_t *req, int status) {
+    if (status) {
+        fprintf(stderr, "Write error %s\n", uv_strerror(status));
+    }
+    free_write_req(req);
+}
+
+void echo_read(uv_stream_t *client, ssize_t nread, const uv_buf_t *buf) {
+    if (nread > 0) {
+        write_req_t *req = (write_req_t*) malloc(sizeof(write_req_t));
+        req->buf = uv_buf_init(buf->base, nread);
+        uv_write((uv_write_t*) req, client, &req->buf, 1, echo_write);
+        return;
+    }
+    if (nread < 0) {
+        if (nread != UV_EOF)
+            fprintf(stderr, "Read error %s\n", uv_err_name(nread));
+        uv_close((uv_handle_t*) client, on_close);
+    }
+
+    free(buf->base);
+}
+
+void on_new_connection(uv_stream_t *server, int status) {
+    if (status < 0) {
+        fprintf(stderr, "New connection error %s\n", uv_strerror(status));
+        // error!
+        return;
+    }
+
+    uv_tcp_t *client = (uv_tcp_t*) malloc(sizeof(uv_tcp_t));
+    uv_tcp_init(loop, client);
+    if (uv_accept(server, (uv_stream_t*) client) == 0) {
+        uv_read_start((uv_stream_t*) client, alloc_buffer, echo_read);
+    }
+    else {
+        uv_close((uv_handle_t*) client, on_close);
+    }
+}
+
+int main() {
+    loop = uv_default_loop();
+
+    uv_tcp_t server;
+    uv_tcp_init(loop, &server);
+
+    uv_ip4_addr("0.0.0.0", DEFAULT_PORT, &addr);
+
+    uv_tcp_bind(&server, (const struct sockaddr*)&addr, 0);
+    int r = uv_listen((uv_stream_t*) &server, DEFAULT_BACKLOG, on_new_connection);
+    if (r) {
+        fprintf(stderr, "Listen error %s\n", uv_strerror(r));
+        return 1;
+    }
+    return uv_run(loop, UV_RUN_DEFAULT);
+}

benchmarks/cpp/asio/echo_server_client.cpp

@@ -0,0 +1,67 @@
+/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE.txt)
+ */
+
+#include <iostream>
+#include <boost/asio.hpp>
+#if defined(BOOST_ASIO_HAS_CO_AWAIT)
+
+namespace net = boost::asio;
+
+using net::ip::tcp;
+using tcp_socket = net::use_awaitable_t<>::as_default_on_t<net::ip::tcp::socket>;
+using timer_type = net::use_awaitable_t<>::as_default_on_t<net::steady_timer>;
+
+auto example(boost::asio::ip::tcp::endpoint ep, std::string msg, int n) -> net::awaitable<void>
+{
+   try {
+      auto ex = co_await net::this_coro::executor;
+
+      tcp_socket socket{ex};
+      co_await socket.async_connect(ep);
+
+      std::string buffer;
+      auto dbuffer = net::dynamic_buffer(buffer);
+      for (int i = 0; i < n; ++i) {
+         co_await net::async_write(socket, net::buffer(msg));
+         auto n = co_await net::async_read_until(socket, dbuffer, "\n");
+         //std::printf("> %s", buffer.data());
+         dbuffer.consume(n);
+      }
+
+      //std::printf("Ok: %s", msg.data());
+   } catch (std::exception const& e) {
+      std::cerr << "Error: " << e.what() << std::endl;
+   }
+}
+
+int main(int argc, char* argv[])
+{
+   try {
+      int sessions = 1;
+      int msgs = 1;
+
+      if (argc == 3) {
+         sessions = std::stoi(argv[1]);
+         msgs = std::stoi(argv[2]);
+      }
+
+      net::io_context ioc;
+
+      tcp::resolver resv{ioc};
+      auto const res = resv.resolve("127.0.0.1", "55555");
+      auto ep = *std::begin(res);
+
+      for (int i = 0; i < sessions; ++i)
+         net::co_spawn(ioc, example(ep, "Some message\n", msgs), net::detached);
+
+      ioc.run();
+   } catch (std::exception const& e) {
+      std::cerr << e.what() << std::endl;
+   }
+}
+#else // defined(BOOST_ASIO_HAS_CO_AWAIT)
+auto main() -> int {std::cout << "Requires coroutine support." << std::endl; return 1;}
+#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)

benchmarks/cpp/asio/echo_server_direct.cpp

@@ -0,0 +1,63 @@
+//
+// echo_server.cpp
+// ~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2022 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <cstdio>
+#include <iostream>
+#include <boost/asio.hpp>
+#if defined(BOOST_ASIO_HAS_CO_AWAIT)
+
+namespace net = boost::asio;
+namespace this_coro = net::this_coro;
+using net::ip::tcp;
+using net::detached;
+using executor_type = net::io_context::executor_type;
+using socket_type = net::basic_stream_socket<net::ip::tcp, executor_type>;
+using tcp_socket = net::use_awaitable_t<executor_type>::as_default_on_t<socket_type>;
+using acceptor_type = net::basic_socket_acceptor<net::ip::tcp, executor_type>;
+using tcp_acceptor = net::use_awaitable_t<executor_type>::as_default_on_t<acceptor_type>;
+using awaitable_type = net::awaitable<void, executor_type>;
+constexpr net::use_awaitable_t<executor_type> use_awaitable;
+
+awaitable_type echo(tcp_socket socket)
+{
+  try {
+     char data[1024];
+     for (;;) {
+        std::size_t n = co_await socket.async_read_some(net::buffer(data), use_awaitable);
+        co_await async_write(socket, net::buffer(data, n), use_awaitable);
+     }
+  } catch (std::exception const&) {
+     //std::printf("echo Exception: %s\n", e.what());
+  }
+}
+
+awaitable_type listener()
+{
+  auto ex = co_await this_coro::executor;
+  tcp_acceptor acceptor(ex, {tcp::v4(), 55555});
+  for (;;) {
+     tcp_socket socket = co_await acceptor.async_accept(use_awaitable);
+     co_spawn(ex, echo(std::move(socket)), detached);
+  }
+}
+
+int main()
+{
+  try {
+     net::io_context io_context{BOOST_ASIO_CONCURRENCY_HINT_UNSAFE_IO};
+     co_spawn(io_context, listener(), detached);
+     io_context.run();
+  } catch (std::exception const& e) {
+     std::printf("Exception: %s\n", e.what());
+  }
+}
+#else // defined(BOOST_ASIO_HAS_CO_AWAIT)
+auto main() -> int {std::cout << "Requires coroutine support." << std::endl; return 1;}
+#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)

benchmarks/go/echo_server_direct.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	"fmt"
+	"net"
+	"os"
+	"runtime"
+)
+
+func echo(conn net.Conn) {
+	buf := make([]byte, 1024)
+	for {
+		n, err := conn.Read(buf)
+                if err != nil {
+                        break;
+                }
+
+                conn.Write(buf[:n])
+                if err != nil {
+                        fmt.Println("ERROR", err)
+                        os.Exit(1)
+                }
+	}
+}
+
+func main() {
+	runtime.GOMAXPROCS(1)
+
+	l, err := net.Listen("tcp", "0.0.0.0:55555")
+	if err != nil {
+		fmt.Println("ERROR", err)
+		os.Exit(1)
+	}
+
+	for {
+		conn, err := l.Accept()
+		if err != nil {
+			fmt.Println("ERROR", err)
+			continue
+		}
+		go echo(conn)
+	}
+}

benchmarks/go/echo_server_over_redis.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+    "context"
+    "github.com/go-redis/redis/v8"
+     "bufio"
+     "fmt"
+     "io"
+     "net"
+     "os"
+)
+
+var ctx = context.Background()
+var rdb = redis.NewClient(&redis.Options{Addr: "db.occase.de:6379", Password: "", DB: 0,})
+
+func echo(conn net.Conn) {
+	r := bufio.NewReader(conn)
+	for {
+		line, err := r.ReadBytes(byte('\n'))
+		switch err {
+		case nil:
+			break
+		case io.EOF:
+		default:
+			fmt.Println("ERROR", err)
+		}
+
+               err2 := rdb.Ping(ctx).Err()
+               if err2 != nil {
+                  fmt.Println("ERROR", err2)
+                  panic(err2)
+               }
+
+	       conn.Write(line)
+	}
+}
+
+func main() {
+	l, err := net.Listen("tcp", "0.0.0.0:55555")
+	if err != nil {
+		fmt.Println("ERROR", err)
+		os.Exit(1)
+	}
+
+	for {
+		conn, err := l.Accept()
+		if err != nil {
+			fmt.Println("ERROR", err)
+			continue
+		}
+
+		go echo(conn)
+	}
+}

benchmarks/java/echo_server_direct/TcpEchoServer.java

@@ -0,0 +1,105 @@
+import java.nio.*;
+import java.nio.channels.*;
+import java.net.*;
+import java.util.*;
+import java.io.IOException;
+
+public class TcpEchoServer {
+
+  public static int DEFAULT_PORT = 55555;
+
+ public static void main(String[] args) {
+int port;
+   try {
+      port = Integer.parseInt(args[0]);
+    }
+
+    catch (Exception ex) {
+      port = DEFAULT_PORT;
+    }
+
+    //System.out.println("Listening for connections on port " + port);
+    ServerSocketChannel serverChannel;
+    Selector selector;
+    try {
+      serverChannel = ServerSocketChannel.open( );
+      ServerSocket ss = serverChannel.socket( );
+      InetSocketAddress address = new InetSocketAddress(port);
+      ss.bind(address);
+      serverChannel.configureBlocking(false);
+      selector = Selector.open( );
+      serverChannel.register(selector, SelectionKey.OP_ACCEPT);
+    }
+    catch (IOException ex) {
+      ex.printStackTrace( );
+      return;
+    }
+   while (true) {
+     try {
+        selector.select( );
+      }
+      catch (IOException ex) {
+        ex.printStackTrace( );
+        break;
+      }
+      Set readyKeys = selector.selectedKeys( );
+      Iterator iterator = readyKeys.iterator( );
+      while (iterator.hasNext( )) {
+       SelectionKey key = (SelectionKey) iterator.next( );
+        iterator.remove( );
+        try {
+          if (key.isAcceptable( )) {
+            ServerSocketChannel server = (ServerSocketChannel ) key.channel( );
+            SocketChannel client = server.accept( );
+            //System.out.println("Accepted connection from " + client);
+            client.configureBlocking(false);
+            SelectionKey clientKey = client.register(
+              selector, SelectionKey.OP_WRITE | SelectionKey.OP_READ);
+            ByteBuffer buffer = ByteBuffer.allocate(100);
+            clientKey.attach(buffer);
+           //System.out.println(buffer.toString());
+
+          }
+
+          if (key.isReadable( )) {
+            SocketChannel client = (SocketChannel) key.channel( );
+            ByteBuffer output = (ByteBuffer) key.attachment( );
+            client.read(output);
+          }
+
+          if (key.isWritable( )) {
+            SocketChannel client = (SocketChannel) key.channel( );
+            ByteBuffer output = (ByteBuffer) key.attachment( );
+            output.flip( );
+            client.write(output);
+            output.compact( );
+
+    }
+
+        }
+
+        catch (IOException ex) {
+          key.cancel( );
+          try {
+            key.channel().close();
+        }
+
+          catch (IOException cex) {}
+
+        }
+
+
+
+      }
+
+
+
+    }
+
+
+
+  }
+
+
+
+}

benchmarks/nodejs/README.txt

@@ -0,0 +1,4 @@
+
+$ npm install
+
+$ node echo_server_over_redis.js

benchmarks/nodejs/echo_server_direct/echo_server_direct.js

@@ -0,0 +1,7 @@
+var net = require('net');
+
+net.createServer(function(socket){
+    socket.on('data', function(data){
+        socket.write(data.toString())
+    });
+}).listen(55555);

benchmarks/nodejs/echo_server_direct/package.json

@@ -0,0 +1,2 @@
+{
+}

benchmarks/nodejs/echo_server_over_redis/echo_server_over_redis.js

@@ -0,0 +1,13 @@
+import { createClient } from 'redis';
+import * as net from 'net';
+
+const client = createClient({url: 'redis://aedis.occase.de:63799' });
+client.on('error', (err) => console.log('Redis Client Error', err));
+await client.connect();
+
+net.createServer(function(socket){
+   socket.on('data', async function(data) {
+      const value = await client.ping(data.toString());
+      socket.write(data)
+   });
+}).listen(55555);

benchmarks/nodejs/echo_server_over_redis/package-lock.json

@@ -0,0 +1,169 @@
+{
+   "name": "echo_server_over_redis",
+   "lockfileVersion": 2,
+   "requires": true,
+   "packages": {
+      "": {
+         "dependencies": {
+            "redis": "^4.2.0"
+         }
+      },
+      "node_modules/@redis/bloom": {
+         "version": "1.0.2",
+         "resolved": "https://registry.npmjs.org/@redis/bloom/-/bloom-1.0.2.tgz",
+         "integrity": "sha512-EBw7Ag1hPgFzdznK2PBblc1kdlj5B5Cw3XwI9/oG7tSn85/HKy3X9xHy/8tm/eNXJYHLXHJL/pkwBpFMVVefkw==",
+         "peerDependencies": {
+            "@redis/client": "^1.0.0"
+         }
+      },
+      "node_modules/@redis/client": {
+         "version": "1.2.0",
+         "resolved": "https://registry.npmjs.org/@redis/client/-/client-1.2.0.tgz",
+         "integrity": "sha512-a8Nlw5fv2EIAFJxTDSSDVUT7yfBGpZO96ybZXzQpgkyLg/dxtQ1uiwTc0EGfzg1mrPjZokeBSEGTbGXekqTNOg==",
+         "dependencies": {
+            "cluster-key-slot": "1.1.0",
+            "generic-pool": "3.8.2",
+            "yallist": "4.0.0"
+         },
+         "engines": {
+            "node": ">=14"
+         }
+      },
+      "node_modules/@redis/graph": {
+         "version": "1.0.1",
+         "resolved": "https://registry.npmjs.org/@redis/graph/-/graph-1.0.1.tgz",
+         "integrity": "sha512-oDE4myMCJOCVKYMygEMWuriBgqlS5FqdWerikMoJxzmmTUErnTRRgmIDa2VcgytACZMFqpAOWDzops4DOlnkfQ==",
+         "peerDependencies": {
+            "@redis/client": "^1.0.0"
+         }
+      },
+      "node_modules/@redis/json": {
+         "version": "1.0.3",
+         "resolved": "https://registry.npmjs.org/@redis/json/-/json-1.0.3.tgz",
+         "integrity": "sha512-4X0Qv0BzD9Zlb0edkUoau5c1bInWSICqXAGrpwEltkncUwcxJIGEcVryZhLgb0p/3PkKaLIWkjhHRtLe9yiA7Q==",
+         "peerDependencies": {
+            "@redis/client": "^1.0.0"
+         }
+      },
+      "node_modules/@redis/search": {
+         "version": "1.0.6",
+         "resolved": "https://registry.npmjs.org/@redis/search/-/search-1.0.6.tgz",
+         "integrity": "sha512-pP+ZQRis5P21SD6fjyCeLcQdps+LuTzp2wdUbzxEmNhleighDDTD5ck8+cYof+WLec4csZX7ks+BuoMw0RaZrA==",
+         "peerDependencies": {
+            "@redis/client": "^1.0.0"
+         }
+      },
+      "node_modules/@redis/time-series": {
+         "version": "1.0.3",
+         "resolved": "https://registry.npmjs.org/@redis/time-series/-/time-series-1.0.3.tgz",
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+         "peerDependencies": {
+            "@redis/client": "^1.0.0"
+         }
+      },
+      "node_modules/cluster-key-slot": {
+         "version": "1.1.0",
+         "resolved": "https://registry.npmjs.org/cluster-key-slot/-/cluster-key-slot-1.1.0.tgz",
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+         "engines": {
+            "node": ">=0.10.0"
+         }
+      },
+      "node_modules/generic-pool": {
+         "version": "3.8.2",
+         "resolved": "https://registry.npmjs.org/generic-pool/-/generic-pool-3.8.2.tgz",
+         "integrity": "sha512-nGToKy6p3PAbYQ7p1UlWl6vSPwfwU6TMSWK7TTu+WUY4ZjyZQGniGGt2oNVvyNSpyZYSB43zMXVLcBm08MTMkg==",
+         "engines": {
+            "node": ">= 4"
+         }
+      },
+      "node_modules/redis": {
+         "version": "4.2.0",
+         "resolved": "https://registry.npmjs.org/redis/-/redis-4.2.0.tgz",
+         "integrity": "sha512-bCR0gKVhIXFg8zCQjXEANzgI01DDixtPZgIUZHBCmwqixnu+MK3Tb2yqGjh+HCLASQVVgApiwhNkv+FoedZOGQ==",
+         "dependencies": {
+            "@redis/bloom": "1.0.2",
+            "@redis/client": "1.2.0",
+            "@redis/graph": "1.0.1",
+            "@redis/json": "1.0.3",
+            "@redis/search": "1.0.6",
+            "@redis/time-series": "1.0.3"
+         }
+      },
+      "node_modules/yallist": {
+         "version": "4.0.0",
+         "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+         "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
+      }
+   },
+   "dependencies": {
+      "@redis/bloom": {
+         "version": "1.0.2",
+         "resolved": "https://registry.npmjs.org/@redis/bloom/-/bloom-1.0.2.tgz",
+         "integrity": "sha512-EBw7Ag1hPgFzdznK2PBblc1kdlj5B5Cw3XwI9/oG7tSn85/HKy3X9xHy/8tm/eNXJYHLXHJL/pkwBpFMVVefkw==",
+         "requires": {}
+      },
+      "@redis/client": {
+         "version": "1.2.0",
+         "resolved": "https://registry.npmjs.org/@redis/client/-/client-1.2.0.tgz",
+         "integrity": "sha512-a8Nlw5fv2EIAFJxTDSSDVUT7yfBGpZO96ybZXzQpgkyLg/dxtQ1uiwTc0EGfzg1mrPjZokeBSEGTbGXekqTNOg==",
+         "requires": {
+            "cluster-key-slot": "1.1.0",
+            "generic-pool": "3.8.2",
+            "yallist": "4.0.0"
+         }
+      },
+      "@redis/graph": {
+         "version": "1.0.1",
+         "resolved": "https://registry.npmjs.org/@redis/graph/-/graph-1.0.1.tgz",
+         "integrity": "sha512-oDE4myMCJOCVKYMygEMWuriBgqlS5FqdWerikMoJxzmmTUErnTRRgmIDa2VcgytACZMFqpAOWDzops4DOlnkfQ==",
+         "requires": {}
+      },
+      "@redis/json": {
+         "version": "1.0.3",
+         "resolved": "https://registry.npmjs.org/@redis/json/-/json-1.0.3.tgz",
+         "integrity": "sha512-4X0Qv0BzD9Zlb0edkUoau5c1bInWSICqXAGrpwEltkncUwcxJIGEcVryZhLgb0p/3PkKaLIWkjhHRtLe9yiA7Q==",
+         "requires": {}
+      },
+      "@redis/search": {
+         "version": "1.0.6",
+         "resolved": "https://registry.npmjs.org/@redis/search/-/search-1.0.6.tgz",
+         "integrity": "sha512-pP+ZQRis5P21SD6fjyCeLcQdps+LuTzp2wdUbzxEmNhleighDDTD5ck8+cYof+WLec4csZX7ks+BuoMw0RaZrA==",
+         "requires": {}
+      },
+      "@redis/time-series": {
+         "version": "1.0.3",
+         "resolved": "https://registry.npmjs.org/@redis/time-series/-/time-series-1.0.3.tgz",
+         "integrity": "sha512-OFp0q4SGrTH0Mruf6oFsHGea58u8vS/iI5+NpYdicaM+7BgqBZH8FFvNZ8rYYLrUO/QRqMq72NpXmxLVNcdmjA==",
+         "requires": {}
+      },
+      "cluster-key-slot": {
+         "version": "1.1.0",
+         "resolved": "https://registry.npmjs.org/cluster-key-slot/-/cluster-key-slot-1.1.0.tgz",
+         "integrity": "sha512-2Nii8p3RwAPiFwsnZvukotvow2rIHM+yQ6ZcBXGHdniadkYGZYiGmkHJIbZPIV9nfv7m/U1IPMVVcAhoWFeklw=="
+      },
+      "generic-pool": {
+         "version": "3.8.2",
+         "resolved": "https://registry.npmjs.org/generic-pool/-/generic-pool-3.8.2.tgz",
+         "integrity": "sha512-nGToKy6p3PAbYQ7p1UlWl6vSPwfwU6TMSWK7TTu+WUY4ZjyZQGniGGt2oNVvyNSpyZYSB43zMXVLcBm08MTMkg=="
+      },
+      "redis": {
+         "version": "4.2.0",
+         "resolved": "https://registry.npmjs.org/redis/-/redis-4.2.0.tgz",
+         "integrity": "sha512-bCR0gKVhIXFg8zCQjXEANzgI01DDixtPZgIUZHBCmwqixnu+MK3Tb2yqGjh+HCLASQVVgApiwhNkv+FoedZOGQ==",
+         "requires": {
+            "@redis/bloom": "1.0.2",
+            "@redis/client": "1.2.0",
+            "@redis/graph": "1.0.1",
+            "@redis/json": "1.0.3",
+            "@redis/search": "1.0.6",
+            "@redis/time-series": "1.0.3"
+         }
+      },
+      "yallist": {
+         "version": "4.0.0",
+         "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+         "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
+      }
+   }
+}

benchmarks/nodejs/echo_server_over_redis/package.json

@@ -0,0 +1,6 @@
+{
+   "type": "module",
+   "dependencies": {
+      "redis": "^4.2.0"
+   }
+}

benchmarks/rust/echo_server_direct/Cargo.lock

@@ -0,0 +1,309 @@
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+# It is not intended for manual editing.
+version = 3
+
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+version = "1.0.39"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c54b25569025b7fc9651de43004ae593a75ad88543b17178aa5e1b9c4f15f56f"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f53dc8cf16a769a6f677e09e7ff2cd4be1ea0f48754aac39520536962011de0d"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "redox_syscall"
+version = "0.2.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62f25bc4c7e55e0b0b7a1d43fb893f4fa1361d0abe38b9ce4f323c2adfe6ef42"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "scopeguard"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
+
+[[package]]
+name = "signal-hook-registry"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e51e73328dc4ac0c7ccbda3a494dfa03df1de2f46018127f60c693f2648455b0"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "smallvec"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2fd0db749597d91ff862fd1d55ea87f7855a744a8425a64695b6fca237d1dad1"
+
+[[package]]
+name = "socket2"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "66d72b759436ae32898a2af0a14218dbf55efde3feeb170eb623637db85ee1e0"
+dependencies = [
+ "libc",
+ "winapi",
+]
+
+[[package]]
+name = "syn"
+version = "1.0.98"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c50aef8a904de4c23c788f104b7dddc7d6f79c647c7c8ce4cc8f73eb0ca773dd"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "tokio"
+version = "1.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "57aec3cfa4c296db7255446efb4928a6be304b431a806216105542a67b6ca82e"
+dependencies = [
+ "autocfg",
+ "bytes",
+ "libc",
+ "memchr",
+ "mio",
+ "num_cpus",
+ "once_cell",
+ "parking_lot",
+ "pin-project-lite",
+ "signal-hook-registry",
+ "socket2",
+ "tokio-macros",
+ "winapi",
+]
+
+[[package]]
+name = "tokio-macros"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9724f9a975fb987ef7a3cd9be0350edcbe130698af5b8f7a631e23d42d052484"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5bd2fe26506023ed7b5e1e315add59d6f584c621d037f9368fea9cfb988f368c"
+
+[[package]]
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+version = "0.11.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "windows-sys"
+version = "0.36.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea04155a16a59f9eab786fe12a4a450e75cdb175f9e0d80da1e17db09f55b8d2"
+dependencies = [
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.36.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9bb8c3fd39ade2d67e9874ac4f3db21f0d710bee00fe7cab16949ec184eeaa47"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.36.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "180e6ccf01daf4c426b846dfc66db1fc518f074baa793aa7d9b9aaeffad6a3b6"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.36.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2e7917148b2812d1eeafaeb22a97e4813dfa60a3f8f78ebe204bcc88f12f024"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.36.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4dcd171b8776c41b97521e5da127a2d86ad280114807d0b2ab1e462bc764d9e1"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.36.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c811ca4a8c853ef420abd8592ba53ddbbac90410fab6903b3e79972a631f7680"

benchmarks/rust/echo_server_direct/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "echo_server_direct"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+tokio = { version = "1.0", features = ["full"] }

benchmarks/rust/echo_server_direct/src/main.rs

@@ -0,0 +1,35 @@
+use tokio::net::TcpListener;
+use tokio::io::AsyncReadExt;
+use tokio::io::AsyncWriteExt;
+
+#[tokio::main(flavor = "current_thread")]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let listener = TcpListener::bind("127.0.0.1:55555").await?;
+
+    loop {
+        let (mut socket, _) = listener.accept().await?;
+
+        tokio::spawn(async move {
+            let mut buf = [0; 1024];
+
+            // In a loop, read data from the socket and write the data back.
+            loop {
+                let n = match socket.read(&mut buf).await {
+                    // socket closed
+                    Ok(n) if n == 0 => return,
+                    Ok(n) => n,
+                    Err(e) => {
+                        eprintln!("failed to read from socket; err = {:?}", e);
+                        return;
+                    }
+                };
+
+                // Write the data back
+                if let Err(e) = socket.write_all(&buf[0..n]).await {
+                    eprintln!("failed to write to socket; err = {:?}", e);
+                    return;
+                }
+            }
+        });
+    }
+}

benchmarks/rust/echo_server_over_redis/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "echo_server_over_redis"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+tokio = { version = "1.16.1", features = ["full"] }
+redis = { version = "0.21.5", features = ["tokio-comp"] }
+futures = "0.3"

benchmarks/rust/echo_server_over_redis/src/main.rs

@@ -0,0 +1,44 @@
+use tokio::net::TcpListener;
+use tokio::io::AsyncReadExt;
+use tokio::io::AsyncWriteExt;
+use tokio::sync::Mutex;
+use std::sync::{Arc};
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let listener = TcpListener::bind("127.0.0.1:55555").await?;
+    let client = redis::Client::open("redis://db.occase.de/").unwrap();
+    let con = Arc::new(Mutex::new(client.get_async_connection().await?));
+
+    loop {
+        let conn = Arc::clone(&con);
+        let (mut socket, _) = listener.accept().await?;
+
+        tokio::spawn(async move {
+            let mut buf = [0; 1024];
+
+            loop {
+                let n = match socket.read(&mut buf).await {
+                    Ok(n) if n == 0 => return,
+                    Ok(n) => n,
+                    Err(e) => {
+                        eprintln!("failed to read from socket; err = {:?}", e);
+                        return;
+                    }
+                };
+
+                let mut local_conn = conn.lock().await;
+
+                let result =
+                    redis::cmd("PING")
+                    .arg(&buf[0..n])
+                    .query_async::<redis::aio::Connection, String>(&mut local_conn).await.unwrap();
+
+                if let Err(e) = socket.write_all(result.as_bytes()).await {
+                    eprintln!("failed to write to socket; err = {:?}", e);
+                    return;
+                }
+            }
+        });
+    }
+}

build.jam

@@ -0,0 +1,28 @@
+# Copyright René Ferdinand Rivera Morell 2024
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+
+require-b2 5.2 ;
+
+constant boost_dependencies :
+    /boost/asio//boost_asio
+    /boost/assert//boost_assert
+    /boost/core//boost_core
+    /boost/mp11//boost_mp11
+    /boost/system//boost_system
+    /boost/throw_exception//boost_throw_exception ;
+
+project /boost/redis
+    : common-requirements
+        <include>include
+    ;
+
+explicit
+    [ alias boost_redis : : : : <library>$(boost_dependencies) ]
+    [ alias all : boost_redis test ]
+    ;
+
+call-if : boost-library redis
+    ;
+

configure.ac

@@ -1,22 +0,0 @@
-AC_PREREQ([2.69])
-AC_INIT([Aedis], [0.0.1], [mzimbres@gmail.com])
-AC_CONFIG_MACRO_DIR([m4])
-#AC_CONFIG_SRCDIR([src/aedis.cpp])
-AC_CONFIG_HEADERS([config.h])
-AM_INIT_AUTOMAKE([-Wall foreign])
-
-# Checks for programs.
-AC_PROG_CXX
-AC_PROG_INSTALL
-AC_PROG_LN_S
-AC_PROG_RANLIB
-AM_PROG_AR
-
-AX_BOOST_BASE([1.78],, AC_MSG_ERROR[Boost not found])
-
-AC_CHECK_HEADER_STDBOOL
-AC_TYPE_UINT64_T
-AC_CHECK_TYPES([ptrdiff_t])
-
-AC_CONFIG_FILES([Makefile doc/Doxyfile])
-AC_OUTPUT

doc/DoxygenLayout.xml

@@ -3,7 +3,7 @@
   <!-- Navigation index tabs for HTML output -->
   <navindex>
     <tab type="mainpage" visible="yes" title="Contents"/>
-    <tab type="pages" visible="no" title="" intro=""/>
+    <tab type="pages" visible="yes" title="" intro=""/>
     <tab type="modules" visible="no" title="Reference" intro=""/>
     <tab type="namespaces" visible="no" title="">
       <tab type="namespacelist" visible="yes" title="" intro=""/>

doc/Jamfile

@@ -0,0 +1,92 @@
+project redis/doc ;
+
+import doxygen ;
+import path ;
+import sequence ;
+
+# All paths must be absolute to work well with the Doxygen rules.
+path-constant this_dir : . ;
+path-constant target_dir : html ;
+path-constant redis_root_dir : .. ;
+path-constant include_dir : ../include ;
+path-constant examples_dir : ../example ;
+path-constant readme : ../README.md ;
+path-constant layout_file : DoxygenLayout.xml ;
+path-constant header : header.html ;
+path-constant footer : footer.html ;
+
+local stylesheet_files = [ path.glob $(this_dir) : *.css ] ;
+local includes = [ path.glob-tree $(include_dir) : *.hpp *.cpp ] ;
+local examples = [ path.glob-tree $(examples_dir) : *.hpp *.cpp ] ;
+
+# If passed directly, several HTML_EXTRA_STYLESHEET tags are generated,
+# which is not correct.
+local stylesheet_arg = [ sequence.join "\"$(stylesheet_files)\"" : " " ] ;
+
+# The doxygen rule requires the target name to end in .html to generate HTML files
+doxygen doc.html
+    :
+        $(includes) $(examples) $(readme)
+    :
+        <doxygen:param>"PROJECT_NAME=Boost.Redis"
+        <doxygen:param>PROJECT_NUMBER="1.84.0"
+        <doxygen:param>PROJECT_BRIEF="A redis client library"
+        <doxygen:param>"STRIP_FROM_PATH=\"$(redis_root_dir)\""
+        <doxygen:param>"STRIP_FROM_INC_PATH=\"$(include_dir)\""
+        <doxygen:param>BUILTIN_STL_SUPPORT=YES
+        <doxygen:param>INLINE_SIMPLE_STRUCTS=YES
+        <doxygen:param>HIDE_UNDOC_MEMBERS=YES
+        <doxygen:param>HIDE_UNDOC_CLASSES=YES
+        <doxygen:param>SHOW_HEADERFILE=YES
+        <doxygen:param>SORT_BRIEF_DOCS=YES
+        <doxygen:param>SORT_MEMBERS_CTORS_1ST=YES
+        <doxygen:param>SHOW_FILES=NO
+        <doxygen:param>SHOW_NAMESPACES=NO
+        <doxygen:param>"LAYOUT_FILE=\"$(layout_file)\""
+        <doxygen:param>WARN_IF_INCOMPLETE_DOC=YES
+        <doxygen:param>FILE_PATTERNS="*.hpp *.cpp"
+        <doxygen:param>EXCLUDE_SYMBOLS=std
+        <doxygen:param>"USE_MDFILE_AS_MAINPAGE=\"$(readme)\""
+        <doxygen:param>SOURCE_BROWSER=YES
+        <doxygen:param>"HTML_HEADER=\"$(header)\""
+        <doxygen:param>"HTML_FOOTER=\"$(footer)\""
+        <doxygen:param>"HTML_EXTRA_STYLESHEET=$(stylesheet_arg)"
+        <doxygen:param>HTML_TIMESTAMP=YES
+        <doxygen:param>GENERATE_TREEVIEW=YES
+        <doxygen:param>FULL_SIDEBAR=YES
+        <doxygen:param>DISABLE_INDEX=YES
+        <doxygen:param>ENUM_VALUES_PER_LINE=0
+        <doxygen:param>OBFUSCATE_EMAILS=YES
+        <doxygen:param>USE_MATHJAX=YES
+        <doxygen:param>MATHJAX_VERSION=MathJax_2
+        <doxygen:param>MATHJAX_RELPATH="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/"
+        <doxygen:param>MACRO_EXPANSION=YES
+        <doxygen:param>HAVE_DOT=NO
+        <doxygen:param>CLASS_GRAPH=NO
+        <doxygen:param>DIRECTORY_GRAPH=NO
+    ;
+
+explicit doc.html ;
+
+# The doxygen rule only informs b2 about the main HTML file, and not about
+# all the doc directory that gets generated. Using the install rule copies
+# only a single file, which is incorrect. This is a workaround to copy
+# the generated docs to the doc/html directory, where they should be.
+make copyhtml.tag : doc.html : @copy_html_dir ;
+explicit copyhtml.tag ;
+actions copy_html_dir
+{
+    rm -rf $(target_dir)
+    mkdir -p $(target_dir)
+    cp -r $(<:D)/html/doc/* $(target_dir)/
+    echo "Stamped" > "$(<)"
+}
+
+# These are used to inform the build system of the
+# means to build the integrated and stand-alone docs.
+
+alias boostdoc ;
+explicit boostdoc ;
+
+alias boostrelease : copyhtml.tag ;
+explicit boostrelease ;

doc/aedis.css

@@ -1,32 +0,0 @@
-/* Doxygen HTML_EXTRA_STYLESHEET */
-
-div.contents {
-    max-width: 100em;
-    margin-right: 5em;
-    margin-left: 5em;
-}
-
-.ui-resizable-e {
-  background-image:url("splitbar.png");
-  background-size:100%;
-  background-repeat:repeat-y;
-  background-attachment: scroll;
-  cursor:ew-resize;
-  height:100%;
-  right:0;
-  top:0;
-  width:1px;
-}
-
-.pyrootbox {
-  border: 1px solid #879ecb;
-  background-color: #f9fafc;
-  padding: 15px;
-}
-
-/*
-code
-{
-    background-color:#EFD25E;
-}
-*/

doc/doxygen-awesome-sidebar-only.css

@@ -0,0 +1,145 @@
+/**
+
+Doxygen Awesome
+https://github.com/jothepro/doxygen-awesome-css
+
+MIT License
+
+Copyright (c) 2021 jothepro
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+ */
+
+html {
+    /* side nav width. MUST be = `TREEVIEW_WIDTH`.
+     * Make sure it is wide enough to contain the page title (logo + title + version)
+     */
+    --side-nav-fixed-width: 335px;
+}
+
+#projectname {
+    white-space: nowrap;
+}
+
+#page-wrapper {
+    height: calc(100vh - 100px);
+    display: flex;
+    flex-direction: column;
+}
+
+#content-wrapper {
+    display: flex;
+    flex-direction: row;
+    min-height: 0;
+}
+
+#doc-content {
+    overflow-y: scroll;
+    flex: 1;
+    height: auto !important;
+}
+
+@media (min-width: 768px) {
+    html {
+        --searchbar-background: var(--page-background-color);
+    }
+
+    #sidebar-wrapper {
+        display: flex;
+        flex-direction: column;
+        min-width: var(--side-nav-fixed-width);
+        max-width: var(--side-nav-fixed-width);   
+        background-color: var(--side-nav-background);
+        border-right: 1px solid rgb(222, 222, 222);
+    }
+
+    #search-box-wrapper {
+        display: flex;
+        flex-direction: row;
+        padding-left: 1em;
+        padding-right: 1em;
+    }
+
+    #MSearchBox {
+        flex: 1;
+        display: flex;
+        padding-left: 1em;
+        padding-right: 1em;
+    }
+
+
+    #MSearchBox .left {
+        display: flex;
+        flex: 1;
+        position: static;
+        align-items: center;
+        justify-content: flex-start;
+        width: auto;
+        height: auto;
+    }
+
+    #MSearchBox .right {
+        display: none;
+    }
+
+    #MSearchSelect {
+        padding-left: 0.75em;
+        left: auto;
+        background-repeat: no-repeat;
+    }
+
+    #MSearchField {
+        flex: 1;
+        position: static;
+        width: auto;
+        height: auto;
+    }
+
+    #nav-tree {
+        height: auto !important;
+    }
+
+    #nav-sync {
+        display: none;
+    }
+
+    #top {
+        display: block;
+        border-bottom: none;
+        max-width: var(--side-nav-fixed-width);
+        background: var(--side-nav-background);
+    }
+
+    .ui-resizable-handle {
+        cursor: default;
+        width: 1px !important;
+    }
+
+    #MSearchResultsWindow {
+        left: var(--spacing-medium) !important;
+        right: auto;
+    }
+}
+
+@media (max-width: 768px) {
+    #sidebar-wrapper {
+        display: none;
+    }
+}

doc/footer.html

@@ -0,0 +1,19 @@
+<!-- HTML footer for doxygen 1.9.1-->
+<!-- start footer part -->
+</div> <!-- close #content-wrapper -->
+<!--BEGIN GENERATE_TREEVIEW-->
+<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
+  <ul>
+    $navpath
+    <li class="footer">$generatedby <a href="https://www.doxygen.org/index.html"><img class="footer" src="$relpath^doxygen.svg" width="104" height="31" alt="doxygen"/></a> $doxygenversion </li>
+  </ul>
+</div>
+<!--END GENERATE_TREEVIEW-->
+<!--BEGIN !GENERATE_TREEVIEW-->
+<hr class="footer"/><address class="footer"><small>
+$generatedby&#160;<a href="https://www.doxygen.org/index.html"><img class="footer" src="$relpath^doxygen.svg" width="104" height="31" alt="doxygen"/></a> $doxygenversion
+</small></address>
+<!--END !GENERATE_TREEVIEW-->
+</div> <!-- #page-wrapper -->
+</body>
+</html>

doc/header.html

@@ -0,0 +1,61 @@
+<!-- HTML header for doxygen 1.9.1-->
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
+<meta http-equiv="X-UA-Compatible" content="IE=9"/>
+<meta name="generator" content="Doxygen $doxygenversion"/>
+<meta name="viewport" content="width=device-width, initial-scale=1"/>
+<!--BEGIN PROJECT_NAME--><title>$projectname: $title</title><!--END PROJECT_NAME-->
+<!--BEGIN !PROJECT_NAME--><title>$title</title><!--END !PROJECT_NAME-->
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doc/on-the-costs-of-async-abstractions.md

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+# On the costs of asynchronous abstractions
+
+The biggest force behind the evolution of
+[Boost.Redis](https://github.com/boostorg/redis) was my struggling in
+coming up with a high-level connection abstraction that was capable of
+multiplexing Redis commands from independent sources while
+concurrently handling server pushes. This journey taught me many
+important lessons, many of which are related to the design and
+performance of asynchronous programs based on Boost.Asio.
+
+In this article I will share some of the lessons learned, specially
+those related to the performance costs of _abstractions_ such as
+`async_read_until` that tend to overschedule into the event-loop. In
+this context I will also briefly comment on how the topics discussed
+here influenced my views on the proposed
+[P2300](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2023/p2300r7.html)
+(a.k.a. Senders and Receivers), which is likely to become the basis of
+networking in upcoming C++ standards.
+
+Although the analysis presented in this article uses the Redis communication
+protocol for illustration I expect it to be useful in general since
+[RESP3](https://github.com/antirez/RESP3/blob/master/spec.md) shares
+many similarities with other widely used protocols such as HTTP. 
+
+## Parsing `\r\n`-delimited messages
+
+The Redis server communicates with its clients by exchanging data
+serialized in
+[RESP3](https://github.com/antirez/RESP3/blob/master/spec.md) format.
+Among the data types supported by this specification, the
+`\r\n`-delimited messages are some of the most frequent in a typical
+session. The table below shows some examples
+
+  Command  | Response | Wire format   | RESP3 name
+  ---------|----------|---------------|---------------------
+  PING     |  PONG    | `+PONG\r\n`   | simple-string
+  INCR     |  42      | `:42\r\n`     | number
+  GET      |  null    | `_\r\n`       | null
+
+Redis also supports command pipelines, which provide a way of
+optimizing round-trip times by batching commands. A pipeline composed
+by the commands shown in the previous table look like this
+
+```
+                       |   Sent in a     |
+                       |   single write  |
++--------+             |                 |              +-------+
+|        | -------->    PING + INCR + GET     --------> |       |
+|        |                                              |       |
+| Client |                                              | Redis |
+|        |                                              |       |
+|        | <-------- "+PONG\r\n:42\r\n_\r\n"  <-------- |       |
++--------+            |<------>|<---->|<-->|            +-------+
+                      |                    |
+                      |     Responses      |
+```
+
+Messages that use delimiters are so common in networking that a
+facility called `async_read_until` for reading them incrementally from
+a socket is already part of Boost.Asio. The coroutine below uses it to
+print message contents to the screen
+
+```cpp
+awaitable<void> parse_resp3_simple_msgs(tcp::socket socket)
+{
+  for (std::string buffer;;) {
+     auto n = co_await async_read_until(socket, dynamic_buffer(buffer), "\r\n");
+
+     std::cout << buffer.substr(1, n - 3) << std::endl;
+
+     // Consume the buffer.
+     buffer.erase(0, n);
+  }
+}
+```
+
+If we pay attention to the buffer content as it is parsed by the code
+above we can see it is rotated fairly often, for example
+
+```
+   "+PONG\r\n:100\r\n+OK\r\n_\r\n"
+   ":100\r\n+OK\r\n_\r\n"
+   "+OK\r\n_\r\n"
+   "_\r\n"
+   ""
+```
+
+When I first realized these, apparently excessive, buffer rotations I
+was concerned they would impact the performance of Boost.Redis in a
+severe way.  To measure the magnitude of this impact I came up with an
+experimental implementation of Asio's `dynamic_buffer` that consumed
+the buffer less eagerly than the `std::string::erase` function used
+above. For that, the implementation increased a buffer offset up
+to a certain threshold and only then triggered a (larger) rotation.
+This is illustrated in the diagram below
+
+```
+    |<---- offset threshold ---->|
+    |                            |
+   "+PONG\r\n:100\r\n+OK\r\n_\r\n+PONG\r\n"
+    |                                       # Initial offset
+
+   "+PONG\r\n:100\r\n+OK\r\n_\r\n+PONG\r\n"
+    |<------>|                              # After 1st message
+
+   "+PONG\r\n:100\r\n+OK\r\n_\r\n+PONG\r\n"
+    |<-------------->|                      # After 2nd message
+
+   "+PONG\r\n:100\r\n+OK\r\n_\r\n+PONG\r\n"
+    |<--------------------->|               # After 3rd message
+
+   "+PONG\r\n:100\r\n+OK\r\n_\r\n+PONG\r\n"
+    |<-------------------------->|          # Threshold crossed after the 4th message
+
+   "+PONG\r\n"
+    |                                       # After rotation
+```
+
+After comparing the performance differences between the two versions I
+was surprised there wasn't any! But that was also very suspicious
+since some RESP3 aggregate types contain a considerable number of
+separators.  For example, a map with two pairs `[(key1, value1),
+(key2, value2)]` encoded in RESP3 requires ten rotations in total
+
+```
+   "%2\r\n$4\r\nkey1\r\n$6\r\nvalue1\r\n$4\r\nkey2\r\n$6\r\nvalue2\r\n"
+   "$4\r\nkey1\r\n$6\r\nvalue1\r\n$4\r\nkey2\r\n$6\r\nvalue2\r\n"
+   "key1\r\n$6\r\nvalue1\r\n$4\r\nkey2\r\n$6\r\nvalue2\r\n"
+   "$6\r\nvalue1\r\n$4\r\nkey2\r\n$6\r\nvalue2\r\n"
+   ...
+```
+
+It was evident something more costly was shadowing the buffer
+rotations. But it couldn't be the search for the separator since it
+performs equivalently to rotations. It is also easy to show that the
+overhead is not related to any IO operation since the problem persists
+if the buffer is never consumed (which causes the function to be
+called with the same string repeatedly).  Once these two factors
+are removed from the table, we are driven into the conclusion that
+calling `async_read_until` has an intrinsic cost, let us see what
+that is.
+
+### Async operations that complete synchronously considered harmful
+
+Assume the scenario described earlier where `async_read_until` is used
+to parse multiple `\r\n`-delimited messages. The following is a
+detailed description of what happens behind the scenes
+
+   1. `async_read_until` calls `socket.async_read_some` repeatedly
+      until the separator `\r\n` shows up in the buffer
+
+```
+   "<read1>"                                # Read 1: needs more data.
+   "<read1><read2>"                         # Read 2: needs more data.
+   "<read1><read2>"                         # Read 3: needs more data.
+   "<read1><read2><read3>"                  # Read 4: needs more data.
+   "<read1><read2><read3>\r\n<bonus bytes>" # separator found, done.
+```
+
+   2. The last call to `socket.async_read_some` happens to read past
+      the separator `\r\n` (depicted as `<bonus bytes>` above),
+      resulting in bonus (maybe incomplete) messages in the buffer
+
+```
+    | 1st async_read_some  |         2nd async_read_some            |
+    |                      |                                        |
+    "+message content here \r\n:100\r\n+OK\r\n_\r\n+incomplete respo"
+    |                          |                   |                |
+    |      Message wanted      |<-- bonus msgs --->|<--incomplete-->|
+    |                          |                         msg        |
+    |                          |                                    |
+    |                          |<---------- bonus bytes ----------->|
+```
+
+   3. The buffer is consumed and `async_read_until` is called again.
+      However, since the buffer already contains the next message this
+      is an IO-less call
+
+```
+   ":100\r\n+OK\r\n_\r\n+not enough byt"
+    |                   |              |
+    |  No IO required   | Need more    |
+    |  to parse these   | data         |   
+    |  messages.        |              |
+```
+
+The fact that step 3. doesn't perform any IO implies the operation can
+complete synchronously, but because this is an asynchronous function
+Boost.Asio by default won't call the continuation before the
+function returns. The implementation must therefore enqueue it for
+execution, as depicted below
+
+```
+   OP5 ---> OP4 ---> OP3 ---> OP2 ---> OP1    # Reschedules the continuation
+                                        |
+       OP1 schedules its continuation   |
+    +-----------------------------------+
+    |
+    |
+   OP6 ---> OP5 ---> OP4 ---> OP3 ---> OP2    # Reschedules the continuation
+                                        |
+       OP2 schedules its continuation   |
+    +-----------------------------------+
+    |
+    |
+   OP7 ---> OP6 ---> OP5 ---> OP4 ---> OP3    
+```
+
+When summed up, the excessive rescheduling of continuations lead to
+performance degradation at scale. But since this is an event-loop
+there is no way around rescheduling as doing otherwise would mean
+allowing a task to monopolize the event-loop, preventing other tasks
+from making progress. The best that can be done is to avoid
+_overscheduling_, so let us determine how much rescheduling is too
+much.
+
+## The intrinsic latency of an event-loop 
+
+An event-loop is a design pattern originally used to handle events
+external to the application, such as GUIs, networking and other forms
+of IO.  If we take this literally, it becomes evident that the way
+`async_read_until` works is incompatible with an event-loop since
+_searching for the separator_ is not an external event and as such
+should not have to be enqueued for execution.
+
+Once we constrain ourselves to events that have an external origin,
+such as anything related to IO and including any form of IPC, the
+scheduling overhead is reduced considerably since the latency
+of the transport layer eclipses whatever time it takes to schedule the
+continuation, for example, according to
+[these](https://www.boost.org/doc/libs/develop/libs/cobalt/doc/html/index.html#posting_to_an_executor)
+benchmarks, the time it takes to schedule a task in the
+`asio::io_context ` is approximately `50ns`.
+
+To give the reader an idea about the magnitude of this number, if
+rescheduling alone were to account for 1% of the runtime of an app
+that uses asynchronous IO to move around data in chunks of size 128kb,
+then this app would have a throughput of approximately 24Gbs.  At such
+high throughput multiple other factors kick in before any scheduling
+overhead even starts to manifest.
+
+It is therefore safe to say that only asynchronous operations that
+don't perform or are not bound to any IO are ever likely to
+overschedule in the sense described above. Those cases can be usually
+avoided, this is what worked for Boost.Redis
+
+  1. `async_read_until` was replaced with calls to
+     `socket.async_read_some` and an incremental parser that does not
+     do any IO.
+
+  2. Channel `try_` functions are used to check if send and receive
+     operations can be called without suspension. For example,
+     `try_send` before `async_send` and `try_receive` before
+     `async_receive` ([see also](https://github.com/chriskohlhoff/asio/commit/fe4fd7acf145335eeefdd19708483c46caeb45e5)
+     `try_send_via_dispatch` for a more aggressive optimization).
+
+  3. Coalescing of individual requests into a single payload to reduce
+     the number of necessary writes on the socket, this is only
+     possible because Redis supports pipelining (good protocols
+     help!).
+
+  4. Increased the socket read sizes to 4kb to reduce the number of
+     reads (which is outweighed by the costs of rotating data in the
+     buffer).
+
+  5. Dropped the `resp3::async_read` abstraction. When I started
+     developing Boost.Redis there was convincing precedent for having
+     a `resp3::async_read` function to read complete RESP3 messages
+     from a socket
+
+     Name                                   | Description
+     ---------------------------------------|-------------------
+     `asio::ip::tcp::async_read`            | Reads `n` bytes from a stream.
+     `beast::http::async_read`              | Reads a complete HTTP message.
+     `beast::websocket::stream::async_read` | Reads a complete Websocket message.
+     `redis::async_read`                    | Reads a complete RESP3 message.
+
+     It turns out however that this function is also vulnerable to
+     immediate completions since in command pipelines multiple
+     responses show up in the buffer after a call to
+     `socket.async_read_some`. When that happens each call to
+     `resp3::async_read` is IO-less.
+   
+Sometimes it is not possible to avoid asynchronous operations that
+complete synchronously, in the following sections we will see how to
+favor throughput over fairness in Boost.Asio.
+
+### Calling the continuation inline
+
+In Boost.Asio it is possible to customize how an algorithm executes
+the continuation when an immediate completion occurs, this includes
+the ability of calling it inline, thereby avoiding the costs of
+excessive rescheduling.  Here is how it works
+
+```cpp
+// (default) The continuation is enqueued for execution, regardless of
+// whether it is immediate or not.
+async_read_until(socket, buffer, "\r\n", continuation);
+
+// Immediate completions are executed in exec2 (otherwise equal to the
+// version above). The completion is called inline if exec2 is the
+// same executor that is running the operation.
+async_read_until(socket, buffer, "\r\n", bind_immediate_executor(exec2, completion));
+```
+
+To compare the performance of both cases I have written a small
+function that calls `async_read_until` in a loop with a buffer that is
+never consumed so that all completions are immediate.  The version
+below uses the default behaviour
+
+```cpp
+void read_safe(tcp::socket& s, std::string& buffer)
+{
+   auto continuation = [&s, &buffer](auto ec, auto n)
+   {
+      read_safe(s, buffer); // Recursive call
+   };
+
+   // This won't cause stack exhaustion because the continuation is 
+   // not called inline but posted in the event loop.
+   async_read_until(s, dynamic_buffer(buffer), "\r\n", continuation);
+}
+```
+
+To optimize away some of the rescheduling the version below uses the
+`bind_immediate_executor` customization to call the continuation
+reentrantly and then breaks the stack from time to time to avoid
+exhausting it
+
+```cpp
+void read_reentrant(tcp::socket& s, std::string& buffer)
+{
+   auto cont = [&](auto, auto)
+   {
+      read_reentrant(s, buffer); // Recursive call
+   };
+
+   // Breaks the callstack after 16 inline calls.
+   if (counter % 16 == 0) {
+      post(s.get_executor(), [cont](){cont({}, 0);});
+      return;
+   }
+
+   // Continuation called reentrantly.
+   async_read_until(s, dynamic_buffer(buffer), "\r\n",
+      bind_immediate_executor(s.get_executor(), cont));
+}
+```
+
+The diagram below shows what the reentrant chain of calls in the code
+above look like from the event-loop point of view
+
+```
+   OP5 ---> OP4 ---> OP3 ---> OP2 ---> OP1a    # Completes immediately
+                                        |
+                                        |      
+                 ...                    |
+                                       OP1b    # Completes immediately
+                                        |
+           Waiting for OP5 to           |      
+             reschedule its             |
+             continuation              OP1c    # Completes immediately
+                                        |
+                                        |      
+                 ...                    |
+                                       OP1d    # Break the call-stack
+                                        |
+    +-----------------------------------+     
+    |
+   OP6 ---> OP5 ---> OP4 ---> OP3 ---> OP2
+```
+
+Unsurprisingly, the reentrant code is 3x faster than the one that
+relies on the default behaviour (don't forget that this is a best case
+scenario, in the general case not all completions are immediate).
+Although faster, this strategy has some downsides
+
+   - The overall operation is not as fast as possible since it still
+     has to reschedule from time to time to break the call stack.  The
+     less it reschedules the higher the risk of exhausting it.
+
+   - It is too easy to forget to break the stack. For example, the
+     programmer might decide to branch somewhere into another chain of
+     asynchronous calls that also use this strategy.  To avoid
+     exhaustion all such branches would have to be safeguarded with a
+     manual rescheduling i.e. `post`.
+
+   - Requires additional layers of complexity such as
+     `bind_immediate_executor` in addition to `bind_executor`.
+   
+  - Non-compliat with more strict
+    [guidelines](https://en.wikipedia.org/wiki/The_Power_of_10:_Rules_for_Developing_Safety-Critical_Code)
+    that prohibits reentrat code.
+
+   - There is no simple way of choosing the maximum allowed number of
+     reentrant calls for each function in a way that covers different
+     use cases and users. Library writers and users would be tempted
+     into using a small value reducing the performance advantage.
+
+   - If the socket is always ready for reading the task will
+     monopolize IO for up to `16` interactions which might cause
+     stutter in unrelated tasks as depicted below
+
+```
+                                 Unfairness
+
+          +----+----+----+    +----+----+----+    +----+----+----+
+Socket-1  |    |    |    |    |    |    |    |    |    |    |    |
+          +----+----+----+----+----+----+----+----+----+----+----+----+     
+Socket-2                 |    |              |    |              |    | 
+                         +----+              +----+              +----+
+```
+
+From the aesthetic point of view the code above is also unpleasant as
+it breaks the function asynchronous contract by injecting a reentrant
+behaviour. It gives me the same kind of feeling I have about
+[recursive
+mutexes](http://www.zaval.org/resources/library/butenhof1.html).
+
+Note: It is worth mentioning here that a similar
+[strategy](https://github.com/NVIDIA/stdexec/blob/6f23dd5b1d523541ce28af32fc2603403ebd36ed/include/exec/trampoline_scheduler.hpp#L52)
+is used to break the call stack of repeating algorithms in
+[stdexec](https://github.com/NVIDIA/stdexec), but in this time
+based on
+[P2300](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2023/p2300r7.html)
+and not on Boost.Asio.
+
+### Coroutine tail-calls
+
+In the previous section we have seen how to avoid overscheduling by
+instructing the asynchronous operation to call the completion inline
+on immediate completion.  It turns out however that coroutine support
+for _tail-calls_ provide a way to completely sidestep this problem.
+This feature is described by
+[Lewis Baker](https://lewissbaker.github.io/2020/05/11/understanding_symmetric_transfer)
+as follows
+
+> A tail-call is one where the current stack-frame is popped before
+> the call and the current function’s return address becomes the
+> return-address for the callee. ie. the callee will return directly
+> the the [sic] caller of this function.
+
+This means (at least in principle) that a library capable of using
+tail-calls when an immediate completion occurs neither has to
+reschedule the continuation nor call it inline. To test how this
+feature compares to the other styles I have used Boost.Cobalt. The
+code looks as follows
+
+```cpp
+// Warning: risks unfairness and starvation of other tasks.
+task<void> read_until_unfair()
+{
+    for (int i = 0; i != repeat; ++i) {
+        co_await async_read_until(s, dynamic_buffer(buffer), "\r\n", cobalt::use_op);
+    }
+}
+```
+
+The result of this comparison as listed in the table below
+
+Time/s | Style     | Configuration               | Library     
+-------|-----------|-----------------------------|-------------
+ 1,0   | Coroutine | `await_ready` optimization  | Boost.Cobalt
+ 4.8   | Callback  | Reentant                    | Boost.Asio  
+10.3   | Coroutine | `use_op`                    | Boost.Cobalt
+14.9   | Callback  | Regular                     | Boost.Asio  
+15.6   | Coroutine | `asio::deferred`            | Boost.Asio  
+
+As the reader can see, `cobalt::use_op` ranks 3rd and is considerably
+faster (10.3 vs 15.6) than the Asio equivalent that uses
+default-rescheduling. However, by trading rescheduling with tail-calls
+the code above can now monopolize the event-loop, resulting in
+unfairness if the socket happens to receive data at a higher rate
+than other tasks. If by chance data is received continuously
+on a socket that is always ready for reading, other tasks will starve
+
+```
+                                 Starvation
+
+          +----+----+----+----+----+----+----+----+----+----+----+----+
+Socket-1  |    |    |    |    |    |    |    |    |    |    |    |    |
+          +----+----+----+----+----+----+----+----+----+----+----+----+     
+
+Socket-2          Starving ...                                          
+                                                                       
+```
+
+To avoid this problem the programmer is forced to reschedule from time
+to time, in the same way we did for the reentrant calls
+
+```cpp
+task<void> read_until_fair()
+{
+    for (int i = 0; i != repeat; ++i) {
+        if (repeat % 16 == 0) {
+            // Reschedules to address unfairness and starvation of 
+            // other tasks.
+            co_await post(cobalt::use_op);
+            continue;
+        }
+        
+        co_await async_read_until(s, dynamic_buffer(buffer), "\r\n", cobalt::use_op);
+    }
+}
+```
+
+Delegating fairness-safety to applications is a dangerous game.
+This is a
+[problem](https://tokio.rs/blog/2020-04-preemption) the Tokio
+community had to deal with before Tokio runtime started enforcing
+rescheduling (after 256 successful operations)
+
+> If data is received faster than it can be processed, it is possible
+> that more data will have already been received by the time the
+> processing of a data chunk completes. In this case, .await will
+> never yield control back to the scheduler, other tasks will not be
+> scheduled, resulting in starvation and large latency variance.
+
+> Currently, the answer to this problem is that the user of Tokio is
+> responsible for adding yield points in both the application and
+> libraries. In practice, very few actually do this and end up being
+> vulnerable to this sort of problem.
+
+### Safety in P2300 (Senders and Receivers)
+
+As of this writing, the C++ standards committee (WG21) has been
+pursuing the standardization of a networking library for almost 20
+years. One of the biggest obstacles that prevented it from happening
+was a disagreement on what the _asynchronous model_ that underlies
+networking should look like. Until 2021 that model was basically
+Boost.Asio _executors_,  but in this
+[poll](https://www.reddit.com/r/cpp/comments/q6tgod/c_committee_polling_results_for_asynchronous/)
+the committee decided to abandon that front and concentrate efforts on
+the new [P2300](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2023/p2300r7.html)
+proposal, also known as _senders and receivers_. The decision was
+quite [abrupt](https://isocpp.org/files/papers/P2464R0.html)
+
+> The original plan about a week earlier than the actual writing of
+> this paper was to write a paper that makes a case for standardizing
+> the Networking TS.
+
+and opinions turned out to be very strong against Boost.Asio (see
+[this](https://api.csswg.org/bikeshed/?force=1&url=https://raw.githubusercontent.com/brycelelbach/wg21_p2459_2022_january_library_evolution_poll_outcomes/main/2022_january_library_evolution_poll_outcomes.bs)
+for how each voter backed their vote)
+
+> The whole concept is completely useless, there's no composed code
+> you can write with it.
+
+The part of that debate that interests us most here is stated in
+[P2471](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p2471r1.pdf),
+that compares Boost.Asio with P2300
+
+> Yes, default rescheduling each operation and default not
+> rescheduling each operation, is a poor trade off. IMO both options
+> are poor. The one good option that I know of that can prevent stack
+> exhaustion is first-class tail-recursion in library or language
+
+> ASIO has chosen to require that every async operation must schedule
+> the completion on a scheduler (every read, every write, etc..).
+
+> sender/receiver has not decided to
+> require that the completion be scheduled. 
+
+> This is why I consider tail-call the only good solution. Scheduling
+> solutions are all inferior (give thanks to Lewis for this shift in
+> my understanding :) ).
+
+Although tail-calls solve the problem of stack-exhaustion as we have
+seen above, it makes the code vulnerable to unfairness and starvation
+and therefore it is not an alternative to default-rescheduling as the
+quotation above is implying.  To deal with the lack of
+default-rescheduling, libraries and applications built on top of P2300
+have to address the aforementioned problems, layer after layer. For
+example,
+[stdexec](https://github.com/NVIDIA/stdexec) has invented something
+called
+_[trampoline-scheduler](https://github.com/NVIDIA/stdexec/blob/e7cd275273525dbc693f4bf5f6dc4d4181b639e4/include/exec/trampoline_scheduler.hpp)_
+to protect repeating algorithms such as `repeat_effect_until` from
+exhausting the stack. This construct however is built around
+reentracy, allowing
+[sixteen](https://github.com/NVIDIA/stdexec/blob/83cdb92d316e8b3bca1357e2cf49fc39e9bed403/include/exec/trampoline_scheduler.hpp#L52)
+levels of inline calls by default. While in Boost.Asio it is possible to use
+reentracy as an optimization for a corner cases, here it is made its
+_modus operandi_, the downsides of this approach have already been stated in a
+previous section so I won't repeat it here.
+
+Also the fact that a special scheduler is needed by specific
+algorithms is a problem on its own since it contradicts one of the
+main selling points of P2300 which is that of being _generic_. For
+example, [P2464R0](https://isocpp.org/files/papers/P2464R0.html) uses
+the code below as an example
+
+```cpp
+void
+run_that_io_operation(
+    scheduler auto sched,
+    sender_of<network_buffer> auto wrapping_continuation)
+{
+   // snip
+}
+```
+
+and states
+
+> I have no idea what the sched's concrete type is. I have no idea
+> what the wrapping_continuation's concrete type is. They're none of
+> my business, ...
+
+Hence, by being generic, the algorithms built on top of P2300 are also
+unsafe (against stack-exhaustion, unfairness and starvation).  Otherwise,
+if library writers require a specific scheduler to ensure safety, then
+the algorithms become automatically non-generic, pick your poison!
+
+The proposers of P2300 claim that it doesn't address safety because it
+should be seen as the low-level building blocks of asynchronous
+programming and that its the role of higher-level libraries, to deal
+with that. This claim however does not hold since, as we have just
+seen, Boost.Asio also provides those building blocks but does so in a
+safe way.  In fact during the whole development of Boost.Redis I never
+had to think about these kinds of problems because safety is built
+from the ground up.
+
+### Avoiding coroutine suspension with `await_ready`
+
+Now let us get back to the first place in the table above, which uses
+the `await_ready` optimization from Boost.Cobalt. This API provides
+users with the ability to avoid coroutine suspension altogether in
+case the separator is already present in the buffer.  It works by
+defining a `struct` with the following interface
+
+```cpp
+struct read_until : cobalt::op<error_code, std::size_t> {
+   ...
+
+   void ready(cobalt::handler<error_code, std::size_t> handler) override
+   {
+      // Search for the separator in buffer and call the handler if found
+   }
+
+   void initiate(cobalt::completion_handler<error_code, std::size_t> complete) override
+   {
+      // Regular call to async_read_until.
+      async_read_until(socket, buffer, delim, std::move(complete));
+   }
+};
+```
+
+and the code that uses it
+
+```cpp
+for (int i = 0; i != repeat; ++i) {
+    co_await read_until(socket, dynamic_buffer(buffer));
+}
+```
+
+In essence, what the code above does is to skip a call to
+`async_read_unil` by first checking with the ready function whether
+the forthcoming operation is going to complete immediately.  The
+nice thing about it is that the programmer can use this optimization
+only when a performance bottleneck is detected, without planing for it
+in advance.  The drawback however is that it requires reimplementing
+the search for the separator in the body of the `ready` function,
+defeating the purpose of using `async_read_until` in first place as
+(again) it would have been simpler to reformulate the operation in
+terms of `socket.async_read_some` directly.
+
+## Acknowledgements
+
+Thanks to Klemens Morgenstern for answering questions about
+Boost.Cobalt.
+

example/CMakeLists.txt

@@ -0,0 +1,52 @@
+add_library(examples_main STATIC main.cpp)
+target_compile_features(examples_main PRIVATE cxx_std_20)
+target_link_libraries(examples_main PRIVATE boost_redis_project_options)
+
+macro(make_example EXAMPLE_NAME STANDARD)
+  add_executable(${EXAMPLE_NAME} ${EXAMPLE_NAME}.cpp)
+  target_link_libraries(${EXAMPLE_NAME} PRIVATE boost_redis_src)
+  target_link_libraries(${EXAMPLE_NAME} PRIVATE boost_redis_project_options)
+  target_compile_features(${EXAMPLE_NAME} PRIVATE cxx_std_${STANDARD})
+  if (${STANDARD} STREQUAL "20")
+    target_link_libraries(${EXAMPLE_NAME} PRIVATE examples_main)
+  endif()
+  if (${EXAMPLE_NAME} STREQUAL "cpp20_json")
+    target_link_libraries(${EXAMPLE_NAME} PRIVATE Boost::json Boost::container_hash)
+  endif()
+endmacro()
+
+macro(make_testable_example EXAMPLE_NAME STANDARD)
+  make_example(${EXAMPLE_NAME} ${STANDARD})
+  if (BOOST_REDIS_INTEGRATION_TESTS)
+    add_test(${EXAMPLE_NAME} ${EXAMPLE_NAME})
+  endif()
+endmacro()
+
+make_testable_example(cpp17_intro 17)
+make_testable_example(cpp17_intro_sync 17)
+
+make_testable_example(cpp20_intro 20)
+make_testable_example(cpp20_containers 20)
+make_testable_example(cpp20_json 20)
+make_testable_example(cpp20_intro_tls 20)
+
+make_example(cpp20_subscriber 20)
+make_example(cpp20_streams 20)
+make_example(cpp20_echo_server 20)
+make_example(cpp20_resolve_with_sentinel 20)
+
+# We test the protobuf example only on gcc.
+if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+  find_package(Protobuf)
+  if (Protobuf_FOUND)
+    protobuf_generate_cpp(PROTO_SRCS PROTO_HDRS person.proto)
+    make_testable_example(cpp20_protobuf 20)
+    target_sources(cpp20_protobuf PUBLIC ${PROTO_SRCS} ${PROTO_HDRS})
+    target_link_libraries(cpp20_protobuf PRIVATE  ${Protobuf_LIBRARIES})
+    target_include_directories(cpp20_protobuf PUBLIC ${Protobuf_INCLUDE_DIRS} ${CMAKE_CURRENT_BINARY_DIR})
+  endif()
+endif()
+
+if (NOT MSVC)
+  make_example(cpp20_chat_room 20)
+endif()

example/cpp17_intro.cpp

@@ -0,0 +1,50 @@
+/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE.txt)
+ */
+
+#include <boost/redis/connection.hpp>
+#include <boost/asio/detached.hpp>
+#include <iostream>
+
+namespace asio = boost::asio;
+using boost::redis::connection;
+using boost::redis::request;
+using boost::redis::response;
+using boost::redis::config;
+
+auto main(int argc, char * argv[]) -> int
+{
+   try {
+      config cfg;
+
+      if (argc == 3) {
+         cfg.addr.host = argv[1];
+         cfg.addr.port = argv[2];
+      }
+
+      request req;
+      req.push("PING", "Hello world");
+
+      response<std::string> resp;
+
+      asio::io_context ioc;
+      connection conn{ioc};
+
+      conn.async_run(cfg, {}, asio::detached);
+
+      conn.async_exec(req, resp, [&](auto ec, auto) {
+         if (!ec)
+            std::cout << "PING: " << std::get<0>(resp).value() << std::endl;
+         conn.cancel();
+      });
+
+      ioc.run();
+
+   } catch (std::exception const& e) {
+      std::cerr << "Error: " << e.what() << std::endl;
+      return 1;
+   }
+}
+

example/cpp17_intro_sync.cpp

@@ -0,0 +1,43 @@
+/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE.txt)
+ */
+
+#include "sync_connection.hpp"
+
+#include <string>
+#include <iostream>
+
+using boost::redis::sync_connection;
+using boost::redis::request;
+using boost::redis::response;
+using boost::redis::config;
+
+auto main(int argc, char * argv[]) -> int
+{
+   try {
+      config cfg;
+
+      if (argc == 3) {
+         cfg.addr.host = argv[1];
+         cfg.addr.port = argv[2];
+      }
+
+      sync_connection conn;
+      conn.run(cfg);
+
+      request req;
+      req.push("PING");
+
+      response<std::string> resp;
+
+      conn.exec(req, resp);
+      conn.stop();
+
+      std::cout << "Response: " << std::get<0>(resp).value() << std::endl;
+
+   } catch (std::exception const& e) {
+      std::cerr << e.what() << std::endl;
+   }
+}

example/cpp20_chat_room.cpp

@@ -0,0 +1,108 @@
+/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE.txt)
+ */
+
+#include <boost/redis/connection.hpp>
+#include <boost/asio/deferred.hpp>
+#include <boost/asio/signal_set.hpp>
+#include <boost/asio/co_spawn.hpp>
+#include <boost/asio/detached.hpp>
+#include <boost/asio/redirect_error.hpp>
+#include <boost/asio/posix/stream_descriptor.hpp>
+#include <unistd.h>
+#include <iostream>
+
+#if defined(BOOST_ASIO_HAS_CO_AWAIT)
+#if defined(BOOST_ASIO_HAS_POSIX_STREAM_DESCRIPTOR)
+
+namespace asio = boost::asio;
+using stream_descriptor = asio::deferred_t::as_default_on_t<asio::posix::stream_descriptor>;
+using signal_set = asio::deferred_t::as_default_on_t<asio::signal_set>;
+using boost::asio::async_read_until;
+using boost::asio::awaitable;
+using boost::asio::co_spawn;
+using boost::asio::consign;
+using boost::asio::deferred;
+using boost::asio::detached;
+using boost::asio::dynamic_buffer;
+using boost::asio::redirect_error;
+using boost::asio::use_awaitable;
+using boost::redis::config;
+using boost::redis::connection;
+using boost::redis::generic_response;
+using boost::redis::ignore;
+using boost::redis::request;
+using boost::system::error_code;
+using namespace std::chrono_literals;
+
+// Chat over Redis pubsub. To test, run this program from multiple
+// terminals and type messages to stdin.
+
+auto
+receiver(std::shared_ptr<connection> conn) -> awaitable<void>
+{
+   request req;
+   req.push("SUBSCRIBE", "channel");
+
+   generic_response resp;
+   conn->set_receive_response(resp);
+
+   while (conn->will_reconnect()) {
+
+      // Subscribe to channels.
+      co_await conn->async_exec(req, ignore, deferred);
+
+      // Loop reading Redis push messages.
+      for (error_code ec;;) {
+         co_await conn->async_receive(redirect_error(use_awaitable, ec));
+         if (ec)
+            break; // Connection lost, break so we can reconnect to channels.
+         std::cout
+            << resp.value().at(1).value
+            << " " << resp.value().at(2).value
+            << " " << resp.value().at(3).value
+            << std::endl;
+         resp.value().clear();
+      }
+   }
+}
+
+// Publishes stdin messages to a Redis channel.
+auto publisher(std::shared_ptr<stream_descriptor> in, std::shared_ptr<connection> conn) -> awaitable<void>
+{
+   for (std::string msg;;) {
+      auto n = co_await async_read_until(*in, dynamic_buffer(msg, 1024), "\n");
+      request req;
+      req.push("PUBLISH", "channel", msg);
+      co_await conn->async_exec(req, ignore, deferred);
+      msg.erase(0, n);
+   }
+}
+
+// Called from the main function (see main.cpp)
+auto co_main(config cfg) -> awaitable<void>
+{
+   auto ex = co_await asio::this_coro::executor;
+   auto conn = std::make_shared<connection>(ex);
+   auto stream = std::make_shared<stream_descriptor>(ex, ::dup(STDIN_FILENO));
+
+   co_spawn(ex, receiver(conn), detached);
+   co_spawn(ex, publisher(stream, conn), detached);
+   conn->async_run(cfg, {}, consign(detached, conn));
+
+   signal_set sig_set{ex, SIGINT, SIGTERM};
+   co_await sig_set.async_wait();
+   conn->cancel();
+   stream->cancel();
+}
+
+#else // defined(BOOST_ASIO_HAS_POSIX_STREAM_DESCRIPTOR)
+auto co_main(config const&) -> awaitable<void>
+{
+   std::cout << "Requires support for posix streams." << std::endl;
+   co_return;
+}
+#endif // defined(BOOST_ASIO_HAS_POSIX_STREAM_DESCRIPTOR)
+#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)

example/cpp20_containers.cpp

@@ -0,0 +1,106 @@
+/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE.txt)
+ */
+
+#include <boost/redis/connection.hpp>
+#include <boost/asio/deferred.hpp>
+#include <boost/asio/detached.hpp>
+#include <boost/asio/co_spawn.hpp>
+#include <map>
+#include <vector>
+#include <iostream>
+
+#if defined(BOOST_ASIO_HAS_CO_AWAIT)
+
+namespace asio = boost::asio;
+using boost::redis::request;
+using boost::redis::response;
+using boost::redis::ignore_t;
+using boost::redis::ignore;
+using boost::redis::config;
+using boost::redis::connection;
+using boost::asio::awaitable;
+using boost::asio::deferred;
+using boost::asio::detached;
+using boost::asio::consign;
+
+void print(std::map<std::string, std::string> const& cont)
+{
+   for (auto const& e: cont)
+      std::cout << e.first << ": " << e.second << "\n";
+}
+
+void print(std::vector<int> const& cont)
+{
+   for (auto const& e: cont) std::cout << e << " ";
+   std::cout << "\n";
+}
+
+// Stores the content of some STL containers in Redis.
+auto store(std::shared_ptr<connection> conn) -> awaitable<void>
+{
+   std::vector<int> vec
+      {1, 2, 3, 4, 5, 6};
+
+   std::map<std::string, std::string> map
+      {{"key1", "value1"}, {"key2", "value2"}, {"key3", "value3"}};
+
+   request req;
+   req.push_range("RPUSH", "rpush-key", vec);
+   req.push_range("HSET", "hset-key", map);
+
+   co_await conn->async_exec(req, ignore, deferred);
+}
+
+auto hgetall(std::shared_ptr<connection> conn) -> awaitable<void>
+{
+   // A request contains multiple commands.
+   request req;
+   req.push("HGETALL", "hset-key");
+
+   // Responses as tuple elements.
+   response<std::map<std::string, std::string>> resp;
+
+   // Executes the request and reads the response.
+   co_await conn->async_exec(req, resp, deferred);
+
+   print(std::get<0>(resp).value());
+}
+
+// Retrieves in a transaction.
+auto transaction(std::shared_ptr<connection> conn) -> awaitable<void>
+{
+   request req;
+   req.push("MULTI");
+   req.push("LRANGE", "rpush-key", 0, -1); // Retrieves
+   req.push("HGETALL", "hset-key"); // Retrieves
+   req.push("EXEC");
+
+   response<
+      ignore_t, // multi
+      ignore_t, // lrange
+      ignore_t, // hgetall
+      response<std::optional<std::vector<int>>, std::optional<std::map<std::string, std::string>>> // exec
+   > resp;
+
+   co_await conn->async_exec(req, resp, deferred);
+
+   print(std::get<0>(std::get<3>(resp).value()).value().value());
+   print(std::get<1>(std::get<3>(resp).value()).value().value());
+}
+
+// Called from the main function (see main.cpp)
+awaitable<void> co_main(config cfg)
+{
+   auto conn = std::make_shared<connection>(co_await asio::this_coro::executor);
+   conn->async_run(cfg, {}, consign(detached, conn));
+
+   co_await store(conn);
+   co_await transaction(conn);
+   co_await hgetall(conn);
+   conn->cancel();
+}
+
+#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)

example/cpp20_echo_server.cpp

@@ -0,0 +1,70 @@
+/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE.txt)
+ */
+
+#include <boost/redis/connection.hpp>
+#include <boost/asio/deferred.hpp>
+#include <boost/asio/signal_set.hpp>
+#include <boost/asio/detached.hpp>
+#include <boost/asio/redirect_error.hpp>
+#include <boost/asio/co_spawn.hpp>
+#include <iostream>
+
+#if defined(BOOST_ASIO_HAS_CO_AWAIT)
+
+namespace asio = boost::asio;
+using tcp_socket = asio::deferred_t::as_default_on_t<asio::ip::tcp::socket>;
+using tcp_acceptor = asio::deferred_t::as_default_on_t<asio::ip::tcp::acceptor>;
+using signal_set = asio::deferred_t::as_default_on_t<asio::signal_set>;
+using boost::redis::request;
+using boost::redis::response;
+using boost::redis::config;
+using boost::system::error_code;
+using boost::redis::connection;
+using namespace std::chrono_literals;
+
+auto echo_server_session(tcp_socket socket, std::shared_ptr<connection> conn) -> asio::awaitable<void>
+{
+   request req;
+   response<std::string> resp;
+
+   for (std::string buffer;;) {
+      auto n = co_await asio::async_read_until(socket, asio::dynamic_buffer(buffer, 1024), "\n");
+      req.push("PING", buffer);
+      co_await conn->async_exec(req, resp, asio::deferred);
+      co_await asio::async_write(socket, asio::buffer(std::get<0>(resp).value()));
+      std::get<0>(resp).value().clear();
+      req.clear();
+      buffer.erase(0, n);
+   }
+}
+
+// Listens for tcp connections.
+auto listener(std::shared_ptr<connection> conn) -> asio::awaitable<void>
+{
+   try {
+      auto ex = co_await asio::this_coro::executor;
+      tcp_acceptor acc(ex, {asio::ip::tcp::v4(), 55555});
+      for (;;)
+         asio::co_spawn(ex, echo_server_session(co_await acc.async_accept(), conn), asio::detached);
+   } catch (std::exception const& e) {
+      std::clog << "Listener: " << e.what() << std::endl;
+   }
+}
+
+// Called from the main function (see main.cpp)
+auto co_main(config cfg) -> asio::awaitable<void>
+{
+   auto ex = co_await asio::this_coro::executor;
+   auto conn = std::make_shared<connection>(ex);
+   asio::co_spawn(ex, listener(conn), asio::detached);
+   conn->async_run(cfg, {}, asio::consign(asio::detached, conn));
+
+   signal_set sig_set(ex, SIGINT, SIGTERM);
+   co_await sig_set.async_wait();
+   conn->cancel();
+}
+
+#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)

example/cpp20_intro.cpp

@@ -0,0 +1,42 @@
+/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE.txt)
+ */
+
+#include <boost/redis/connection.hpp>
+#include <boost/asio/deferred.hpp>
+#include <boost/asio/co_spawn.hpp>
+#include <boost/asio/detached.hpp>
+#include <boost/asio/consign.hpp>
+#include <iostream>
+
+#if defined(BOOST_ASIO_HAS_CO_AWAIT)
+
+namespace asio = boost::asio;
+using boost::redis::request;
+using boost::redis::response;
+using boost::redis::config;
+using boost::redis::connection;
+
+// Called from the main function (see main.cpp)
+auto co_main(config cfg) -> asio::awaitable<void>
+{
+   auto conn = std::make_shared<connection>(co_await asio::this_coro::executor);
+   conn->async_run(cfg, {}, asio::consign(asio::detached, conn));
+
+   // A request containing only a ping command.
+   request req;
+   req.push("PING", "Hello world");
+
+   // Response where the PONG response will be stored.
+   response<std::string> resp;
+
+   // Executes the request.
+   co_await conn->async_exec(req, resp, asio::deferred);
+   conn->cancel();
+
+   std::cout << "PING: " << std::get<0>(resp).value() << std::endl;
+}
+
+#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)

example/cpp20_intro_tls.cpp

@@ -0,0 +1,54 @@
+/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE.txt)
+ */
+
+#include <boost/redis/connection.hpp>
+#include <boost/asio/deferred.hpp>
+#include <boost/asio/use_awaitable.hpp>
+#include <boost/asio/detached.hpp>
+#include <boost/asio/consign.hpp>
+#include <iostream>
+
+#if defined(BOOST_ASIO_HAS_CO_AWAIT)
+
+namespace asio = boost::asio;
+using boost::redis::request;
+using boost::redis::response;
+using boost::redis::config;
+using boost::redis::logger;
+using boost::redis::connection;
+
+auto verify_certificate(bool, asio::ssl::verify_context&) -> bool
+{
+   std::cout << "set_verify_callback" << std::endl;
+   return true;
+}
+
+auto co_main(config cfg) -> asio::awaitable<void>
+{
+   cfg.use_ssl = true;
+   cfg.username = "aedis";
+   cfg.password = "aedis";
+   cfg.addr.host = "db.occase.de";
+   cfg.addr.port = "6380";
+
+   auto conn = std::make_shared<connection>(co_await asio::this_coro::executor);
+   conn->async_run(cfg, {}, asio::consign(asio::detached, conn));
+
+   request req;
+   req.push("PING");
+
+   response<std::string> resp;
+
+   conn->next_layer().set_verify_mode(asio::ssl::verify_peer);
+   conn->next_layer().set_verify_callback(verify_certificate);
+
+   co_await conn->async_exec(req, resp, asio::deferred);
+   conn->cancel();
+
+   std::cout << "Response: " << std::get<0>(resp).value() << std::endl;
+}
+
+#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)

example/cpp20_json.cpp

@@ -0,0 +1,75 @@
+/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE.txt)
+ */
+
+#include <boost/redis/connection.hpp>
+#include <boost/asio/deferred.hpp>
+#include <boost/asio/detached.hpp>
+#include <boost/describe.hpp>
+#include <boost/asio/consign.hpp>
+#include <boost/asio/use_awaitable.hpp>
+#include <string>
+#include <iostream>
+
+#if defined(BOOST_ASIO_HAS_CO_AWAIT)
+
+#include <boost/json/serialize.hpp>
+#include <boost/json/parse.hpp>
+#include <boost/json/value_from.hpp>
+#include <boost/json/value_to.hpp>
+#include <boost/redis/resp3/serialization.hpp>
+
+namespace asio = boost::asio;
+using namespace boost::describe;
+using boost::redis::request;
+using boost::redis::response;
+using boost::redis::ignore_t;
+using boost::redis::config;
+using boost::redis::connection;
+
+// Struct that will be stored in Redis using json serialization. 
+struct user {
+   std::string name;
+   std::string age;
+   std::string country;
+};
+
+// The type must be described for serialization to work.
+BOOST_DESCRIBE_STRUCT(user, (), (name, age, country))
+
+// Boost.Redis customization points (example/json.hpp)
+void boost_redis_to_bulk(std::string& to, user const& u)
+   { boost::redis::resp3::boost_redis_to_bulk(to, boost::json::serialize(boost::json::value_from(u))); }
+
+void boost_redis_from_bulk(user& u, std::string_view sv, boost::system::error_code&)
+   { u = boost::json::value_to<user>(boost::json::parse(sv)); }
+
+auto co_main(config cfg) -> asio::awaitable<void>
+{
+   auto ex = co_await asio::this_coro::executor;
+   auto conn = std::make_shared<connection>(ex);
+   conn->async_run(cfg, {}, asio::consign(asio::detached, conn));
+
+   // user object that will be stored in Redis in json format.
+   user const u{"Joao", "58", "Brazil"};
+
+   // Stores and retrieves in the same request.
+   request req;
+   req.push("SET", "json-key", u); // Stores in Redis.
+   req.push("GET", "json-key"); // Retrieves from Redis.
+
+   response<ignore_t, user> resp;
+
+   co_await conn->async_exec(req, resp, asio::deferred);
+   conn->cancel();
+
+   // Prints the first ping
+   std::cout
+      << "Name: " << std::get<1>(resp).value().name << "\n"
+      << "Age: " << std::get<1>(resp).value().age << "\n"
+      << "Country: " << std::get<1>(resp).value().country << "\n";
+}
+
+#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)

example/cpp20_protobuf.cpp

@@ -0,0 +1,88 @@
+/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE.txt)
+ */
+
+#include <boost/redis/connection.hpp>
+#include <boost/redis/resp3/serialization.hpp>
+#include <boost/asio/deferred.hpp>
+#include <boost/asio/co_spawn.hpp>
+#include <boost/asio/detached.hpp>
+#include <boost/asio/consign.hpp>
+#include <boost/system/errc.hpp>
+#include <iostream>
+
+// See the definition in person.proto. This header is automatically
+// generated by CMakeLists.txt.
+#include "person.pb.h"
+
+#if defined(BOOST_ASIO_HAS_CO_AWAIT)
+
+namespace asio = boost::asio;
+using boost::redis::request;
+using boost::redis::response;
+using boost::redis::operation;
+using boost::redis::ignore_t;
+using boost::redis::config;
+using boost::redis::connection;
+
+// The protobuf type described in example/person.proto
+using tutorial::person;
+
+// Boost.Redis customization points (example/protobuf.hpp)
+namespace tutorial
+{
+
+// Below I am using a Boost.Redis to indicate a protobuf error, this
+// is ok for an example, users however might want to define their own
+// error codes.
+void boost_redis_to_bulk(std::string& to, person const& u)
+{
+   std::string tmp;
+   if (!u.SerializeToString(&tmp))
+      throw boost::system::system_error(boost::redis::error::invalid_data_type);
+
+   boost::redis::resp3::boost_redis_to_bulk(to, tmp);
+}
+
+void boost_redis_from_bulk(person& u, std::string_view sv, boost::system::error_code& ec)
+{
+   std::string const tmp {sv};
+   if (!u.ParseFromString(tmp))
+      ec = boost::redis::error::invalid_data_type;
+}
+
+} // tutorial
+
+using tutorial::boost_redis_to_bulk;
+using tutorial::boost_redis_from_bulk;
+
+asio::awaitable<void> co_main(config cfg)
+{
+   auto ex = co_await asio::this_coro::executor;
+   auto conn = std::make_shared<connection>(ex);
+   conn->async_run(cfg, {}, asio::consign(asio::detached, conn));
+
+   person p;
+   p.set_name("Louis");
+   p.set_id(3);
+   p.set_email("No email yet.");
+
+   request req;
+   req.push("SET", "protobuf-key", p);
+   req.push("GET", "protobuf-key");
+
+   response<ignore_t, person> resp;
+
+   // Sends the request and receives the response.
+   co_await conn->async_exec(req, resp, asio::deferred);
+   conn->cancel();
+
+   std::cout
+      << "Name: " << std::get<1>(resp).value().name() << "\n"
+      << "Age: " << std::get<1>(resp).value().id() << "\n"
+      << "Email: " << std::get<1>(resp).value().email() << "\n";
+}
+
+#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)

example/cpp20_resolve_with_sentinel.cpp

@@ -0,0 +1,75 @@
+/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE.txt)
+ */
+
+#include <boost/redis/connection.hpp>
+#include <boost/asio/use_awaitable.hpp>
+#include <boost/asio/redirect_error.hpp>
+#include <boost/asio/detached.hpp>
+#include <iostream>
+
+#if defined(BOOST_ASIO_HAS_CO_AWAIT)
+
+namespace asio = boost::asio;
+using endpoints = asio::ip::tcp::resolver::results_type;
+using boost::redis::request;
+using boost::redis::response;
+using boost::redis::ignore_t;
+using boost::redis::config;
+using boost::redis::address;
+using boost::redis::connection;
+
+auto redir(boost::system::error_code& ec)
+   { return asio::redirect_error(asio::use_awaitable, ec); }
+
+// For more info see
+// - https://redis.io/docs/manual/sentinel.
+// - https://redis.io/docs/reference/sentinel-clients.
+auto resolve_master_address(std::vector<address> const& addresses) -> asio::awaitable<address>
+{
+   request req;
+   req.push("SENTINEL", "get-master-addr-by-name", "mymaster");
+   req.push("QUIT");
+
+   auto conn = std::make_shared<connection>(co_await asio::this_coro::executor);
+
+   response<std::optional<std::array<std::string, 2>>, ignore_t> resp;
+   for (auto addr : addresses) {
+      boost::system::error_code ec;
+      config cfg;
+      cfg.addr = addr;
+      // TODO: async_run and async_exec should be lauched in
+      // parallel here so we can wait for async_run completion
+      // before eventually calling it again.
+      conn->async_run(cfg, {}, asio::consign(asio::detached, conn));
+      co_await conn->async_exec(req, resp, redir(ec));
+      conn->cancel();
+      conn->reset_stream();
+      if (!ec && std::get<0>(resp))
+         co_return address{std::get<0>(resp).value().value().at(0), std::get<0>(resp).value().value().at(1)};
+   }
+
+   co_return address{};
+}
+
+auto co_main(config cfg) -> asio::awaitable<void>
+{
+   // A list of sentinel addresses from which only one is responsive.
+   // This simulates sentinels that are down.
+   std::vector<address> const addresses
+   { address{"foo", "26379"}
+   , address{"bar", "26379"}
+   , cfg.addr
+   };
+
+   auto const ep = co_await resolve_master_address(addresses);
+
+   std::clog
+      << "Host: " << ep.host << "\n"
+      << "Port: " << ep.port << "\n"
+      << std::flush;
+}
+
+#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)

example/cpp20_streams.cpp

@@ -0,0 +1,98 @@
+/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE.txt)
+ */
+
+#include <boost/redis/connection.hpp>
+#include <boost/asio/deferred.hpp>
+#include <boost/asio/co_spawn.hpp>
+#include <boost/asio/detached.hpp>
+#include <boost/asio/consign.hpp>
+#include <boost/asio/signal_set.hpp>
+#include <boost/asio/awaitable.hpp>
+#include <iostream>
+
+#if defined(BOOST_ASIO_HAS_CO_AWAIT)
+
+#include <memory>
+#include <string>
+#include <thread>
+#include <vector>
+
+namespace net = boost::asio;
+using boost::redis::config;
+using boost::redis::generic_response;
+using boost::redis::operation;
+using boost::redis::request;
+using boost::redis::connection;
+using signal_set = net::deferred_t::as_default_on_t<net::signal_set>;
+
+auto stream_reader(std::shared_ptr<connection> conn) -> net::awaitable<void>
+{
+    std::string redisStreamKey_;
+    request req;
+    generic_response resp;
+
+    std::string stream_id{"$"};
+    std::string const field = "myfield";
+
+    for (;;) {
+        req.push("XREAD", "BLOCK", "0", "STREAMS", "test-topic", stream_id);
+        co_await conn->async_exec(req, resp, net::deferred);
+
+        //std::cout << "Response: ";
+        //for (auto i = 0UL; i < resp->size(); ++i) {
+        //    std::cout << resp->at(i).value << ", ";
+        //}
+        //std::cout << std::endl;
+
+        // The following approach was taken in order to be able to
+        // deal with the responses, as generated by redis in the case
+        // that there are multiple stream 'records' within a single
+        // generic_response.  The nesting and number of values in
+        // resp.value() are different, depending on the contents
+        // of the stream in redis.  Uncomment the above commented-out
+        // code for examples while running the XADD command.
+
+        std::size_t item_index = 0;
+        while (item_index < std::size(resp.value())) {
+           auto const& val = resp.value().at(item_index).value;
+
+           if (field.compare(val) == 0) {
+               // We've hit a myfield field.
+               // The streamId is located at item_index - 2
+               // The payload is located at item_index + 1
+               stream_id = resp.value().at(item_index - 2).value;
+               std::cout
+                  << "StreamId: " << stream_id << ", "
+                  << "MyField: " << resp.value().at(item_index + 1).value
+                  << std::endl;
+               ++item_index; // We can increase so we don't read this again
+           }
+
+           ++item_index;
+        }
+
+        req.clear();
+        resp.value().clear();
+    }
+}
+
+// Run this in another terminal:
+// redis-cli -r 100000 -i 0.0001 XADD "test-topic" "*" "myfield" "myfieldvalue1"
+auto co_main(config cfg) -> net::awaitable<void>
+{
+   auto ex = co_await net::this_coro::executor;
+   auto conn = std::make_shared<connection>(ex);
+   net::co_spawn(ex, stream_reader(conn), net::detached);
+
+   // Disable health checks.
+   cfg.health_check_interval = std::chrono::seconds::zero();
+   conn->async_run(cfg, {}, net::consign(net::detached, conn));
+
+   signal_set sig_set(ex, SIGINT, SIGTERM);
+   co_await sig_set.async_wait();
+   conn->cancel();
+}
+#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)

example/cpp20_subscriber.cpp

@@ -0,0 +1,102 @@
+/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE.txt)
+ */
+
+#include <boost/redis/connection.hpp>
+#include <boost/redis/logger.hpp>
+#include <boost/asio/awaitable.hpp>
+#include <boost/asio/use_awaitable.hpp>
+#include <boost/asio/deferred.hpp>
+#include <boost/asio/co_spawn.hpp>
+#include <boost/asio/detached.hpp>
+#include <boost/asio/consign.hpp>
+#include <boost/asio/redirect_error.hpp>
+#include <boost/asio/signal_set.hpp>
+#include <iostream>
+
+#if defined(BOOST_ASIO_HAS_CO_AWAIT)
+
+namespace asio = boost::asio;
+using namespace std::chrono_literals;
+using boost::redis::request;
+using boost::redis::generic_response;
+using boost::redis::consume_one;
+using boost::redis::logger;
+using boost::redis::config;
+using boost::redis::ignore;
+using boost::redis::error;
+using boost::system::error_code;
+using boost::redis::connection;
+using signal_set = asio::deferred_t::as_default_on_t<asio::signal_set>;
+
+/* This example will subscribe and read pushes indefinitely.
+ *
+ * To test send messages with redis-cli
+ *
+ *    $ redis-cli -3
+ *    127.0.0.1:6379> PUBLISH channel some-message
+ *    (integer) 3
+ *    127.0.0.1:6379>
+ *
+ * To test reconnection try, for example, to close all clients currently
+ * connected to the Redis instance
+ *
+ * $ redis-cli
+ * > CLIENT kill TYPE pubsub
+ */
+
+// Receives server pushes.
+auto
+receiver(std::shared_ptr<connection> conn) -> asio::awaitable<void>
+{
+   request req;
+   req.push("SUBSCRIBE", "channel");
+
+   generic_response resp;
+   conn->set_receive_response(resp);
+
+   // Loop while reconnection is enabled
+   while (conn->will_reconnect()) {
+
+      // Reconnect to the channels.
+      co_await conn->async_exec(req, ignore, asio::deferred);
+
+      // Loop reading Redis pushs messages.
+      for (error_code ec;;) {
+         // First tries to read any buffered pushes.
+         conn->receive(ec);
+         if (ec == error::sync_receive_push_failed) {
+            ec = {};
+            co_await conn->async_receive(asio::redirect_error(asio::use_awaitable, ec));
+         }
+
+         if (ec)
+            break; // Connection lost, break so we can reconnect to channels.
+
+         std::cout
+            << resp.value().at(1).value
+            << " " << resp.value().at(2).value
+            << " " << resp.value().at(3).value
+            << std::endl;
+
+         consume_one(resp);
+      }
+   }
+}
+
+auto co_main(config cfg) -> asio::awaitable<void>
+{
+   auto ex = co_await asio::this_coro::executor;
+   auto conn = std::make_shared<connection>(ex);
+   asio::co_spawn(ex, receiver(conn), asio::detached);
+   conn->async_run(cfg, {}, asio::consign(asio::detached, conn));
+
+   signal_set sig_set(ex, SIGINT, SIGTERM);
+   co_await sig_set.async_wait();
+
+   conn->cancel();
+}
+
+#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)

example/main.cpp

@@ -0,0 +1,53 @@
+/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE.txt)
+ */
+
+#include <boost/redis/connection.hpp>
+#include <boost/redis/config.hpp>
+#include <boost/asio/co_spawn.hpp>
+#include <boost/asio/use_awaitable.hpp>
+#include <boost/asio/io_context.hpp>
+#include <iostream>
+
+namespace asio = boost::asio;
+using boost::redis::config;
+using boost::redis::logger;
+
+#if defined(BOOST_ASIO_HAS_CO_AWAIT)
+
+extern asio::awaitable<void> co_main(config);
+
+auto main(int argc, char * argv[]) -> int
+{
+   try {
+      config cfg;
+
+      if (argc == 3) {
+         cfg.addr.host = argv[1];
+         cfg.addr.port = argv[2];
+      }
+
+      asio::io_context ioc;
+      asio::co_spawn(ioc, co_main(cfg), [](std::exception_ptr p) {
+         if (p)
+            std::rethrow_exception(p);
+      });
+      ioc.run();
+
+   } catch (std::exception const& e) {
+      std::cerr << "(main) " << e.what() << std::endl;
+      return 1;
+   }
+}
+
+#else // defined(BOOST_ASIO_HAS_CO_AWAIT)
+
+auto main() -> int
+{
+   std::cout << "Requires coroutine support." << std::endl;
+   return 0;
+}
+
+#endif // defined(BOOST_ASIO_HAS_CO_AWAIT)

example/person.proto

@@ -0,0 +1,9 @@
+syntax = "proto2";
+
+package tutorial;
+
+message person {
+  optional string name = 1;
+  optional int32 id = 2;
+  optional string email = 3;
+}

example/sync_connection.hpp

@@ -0,0 +1,63 @@
+
+/* Copyright (c) 2018-2024 Marcelo Zimbres Silva (mzimbres@gmail.com)
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE.txt)
+ */
+
+#include <boost/redis/connection.hpp>
+#include <boost/redis/request.hpp>
+#include <boost/asio/deferred.hpp>
+#include <boost/asio/detached.hpp>
+#include <boost/asio/use_future.hpp>
+#include <thread>
+#include <chrono>
+
+using namespace std::chrono_literals;
+
+namespace boost::redis
+{
+
+class sync_connection {
+public:
+   sync_connection()
+   : ioc_{1}
+   , conn_{std::make_shared<connection>(ioc_)}
+   { }
+
+   ~sync_connection()
+   {
+      thread_.join();
+   }
+
+   void run(config cfg)
+   {
+      // Starts a thread that will can io_context::run on which the
+      // connection will run.
+      thread_ = std::thread{[this, cfg]() {
+         conn_->async_run(cfg, {}, asio::detached);
+         ioc_.run();
+      }};
+   }
+
+   void stop()
+   {
+      asio::dispatch(ioc_, [this]() { conn_->cancel(); });
+   }
+
+   template <class Response>
+   auto exec(request const& req, Response& resp)
+   {
+      asio::dispatch(
+         conn_->get_executor(),
+         asio::deferred([this, &req, &resp]() { return conn_->async_exec(req, resp, asio::deferred); }))
+         (asio::use_future).get();
+   }
+
+private:
+   asio::io_context ioc_{1};
+   std::shared_ptr<connection> conn_;
+   std::thread thread_;
+};
+
+}

examples/chat_room.cpp

@@ -1,123 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <iostream>
-#include <vector>
-
-#include <aedis/aedis.hpp>
-#include <aedis/src.hpp>
-
-#include "lib/user_session.hpp"
-#include "lib/net_utils.hpp"
-
-namespace net = aedis::net;
-using aedis::redis::command;
-using aedis::resp3::adapt;
-using aedis::resp3::experimental::client;
-using aedis::resp3::node;
-using aedis::resp3::type;
-using aedis::user_session;
-using aedis::user_session_base;
-
-// TODO: Delete sessions that have expired.
-class receiver : public std::enable_shared_from_this<receiver> {
-public:
-private:
-   std::vector<node> resps_;
-   std::vector<std::weak_ptr<user_session_base>> sessions_;
-
-public:
-   void on_message(std::error_code ec, command cmd)
-   {
-      if (ec) {
-         std::cerr << "Error: " << ec.message() << std::endl;
-         return;
-      }
-
-      switch (cmd) {
-         case command::incr:
-         {
-            std::cout << "Message so far: " << resps_.front().data << std::endl;
-         } break;
-         case command::unknown: // Push
-         {
-            for (auto& weak: sessions_) {
-               if (auto session = weak.lock()) {
-                  session->deliver(resps_.at(3).data);
-               } else {
-                  std::cout << "Session expired." << std::endl;
-               }
-            }
-
-         } break;
-         default: { /* Ignore */ }
-      }
-
-      resps_.clear();
-   }
-
-   auto get_extended_adapter()
-   {
-      return [adapter = adapt(resps_)](command, type t, std::size_t aggregate_size, std::size_t depth, char const* data, std::size_t size, std::error_code& ec) mutable
-         { return adapter(t, aggregate_size, depth, data, size, ec); };
-   }
-
-   auto add(std::shared_ptr<user_session_base> session)
-      { sessions_.push_back(session); }
-};
-
-net::awaitable<void> connection_manager(std::shared_ptr<client> db)
-{
-   try {
-      auto socket = co_await connect();
-      co_await db->engage(std::move(socket));
-   } catch (std::exception const& e) {
-      std::cerr << "Error: " << e.what() << std::endl;
-   }
-}
-
-net::awaitable<void> listener()
-{
-   auto ex = co_await net::this_coro::executor;
-   net::ip::tcp::acceptor acceptor(ex, {net::ip::tcp::v4(), 55555});
-
-   auto recv = std::make_shared<receiver>();
-   auto on_db_msg = [recv](std::error_code ec, command cmd)
-      { recv->on_message(ec, cmd); };
-
-   auto db = std::make_shared<client>(ex);
-   db->set_extended_adapter(recv->get_extended_adapter());
-   db->set_msg_callback(on_db_msg);
-   net::co_spawn(ex, connection_manager(db), net::detached);
-   db->send(command::subscribe, "channel");
-
-   auto on_user_msg = [db](std::string const& msg)
-   {
-      db->send(command::publish, "channel", msg);
-      db->send(command::incr, "message-counter");
-   };
-
-   for (;;) {
-      auto socket = co_await acceptor.async_accept(net::use_awaitable);
-      auto session = std::make_shared<user_session>(std::move(socket));
-      recv->add(session);
-      session->start(on_user_msg);
-   }
-}
-
-int main()
-{
-   try {
-      net::io_context ioc{1};
-      net::signal_set signals(ioc, SIGINT, SIGTERM);
-      signals.async_wait([&](auto, auto){ ioc.stop(); });
-      co_spawn(ioc, listener(), net::detached);
-      ioc.run();
-   } catch (std::exception const& e) {
-      std::cerr << e.what() << std::endl;
-   }
-}

examples/echo_server.cpp

@@ -1,121 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <iostream>
-#include <queue>
-#include <vector>
-
-#include <aedis/aedis.hpp>
-#include <aedis/src.hpp>
-
-#include "lib/user_session.hpp"
-#include "lib/net_utils.hpp"
-
-namespace net = aedis::net;
-using aedis::redis::command;
-using aedis::user_session;
-using aedis::user_session_base;
-using aedis::resp3::node;
-using aedis::resp3::adapt;
-using aedis::resp3::experimental::client;
-using aedis::resp3::type;
-
-class receiver : public std::enable_shared_from_this<receiver> {
-private:
-   std::vector<node> resps_;
-   std::queue<std::weak_ptr<user_session_base>> sessions_;
-
-public:
-   void on_message(std::error_code ec, command cmd)
-   {
-      if (ec) {
-         std::cerr << "Error: " << ec.message() << std::endl;
-         return;
-      }
-
-      switch (cmd) {
-         case command::ping:
-         {
-            if (auto session = sessions_.front().lock()) {
-               session->deliver(resps_.front().data);
-            } else {
-               std::cout << "Session expired." << std::endl;
-            }
-
-            sessions_.pop();
-         } break;
-         case command::incr:
-         {
-            std::cout << "Echos so far: " << resps_.front().data << std::endl;
-         } break;
-         default: { /* Ignore */; }
-      }
-
-      resps_.clear();
-   }
-
-   auto get_extended_adapter()
-   {
-      return [adapter = adapt(resps_)](command, type t, std::size_t aggregate_size, std::size_t depth, char const* data, std::size_t size, std::error_code& ec) mutable
-         { return adapter(t, aggregate_size, depth, data, size, ec); };
-   }
-
-   void add_user_session(std::shared_ptr<user_session_base> session)
-      { sessions_.push(session); }
-};
-
-net::awaitable<void> connection_manager(std::shared_ptr<client> db)
-{
-   try {
-      auto socket = co_await connect();
-      co_await db->engage(std::move(socket));
-   } catch (std::exception const& e) {
-      std::cerr << "Error: " << e.what() << std::endl;
-   }
-}
-
-net::awaitable<void> listener()
-{
-   auto ex = co_await net::this_coro::executor;
-   net::ip::tcp::acceptor acceptor(ex, {net::ip::tcp::v4(), 55555});
-
-   auto recv = std::make_shared<receiver>();
-   auto on_db_msg = [recv](std::error_code ec, command cmd)
-      { recv->on_message(ec, cmd); };
-
-   auto db = std::make_shared<client>(ex);
-   db->set_extended_adapter(recv->get_extended_adapter());
-   db->set_msg_callback(on_db_msg);
-   net::co_spawn(ex, connection_manager(db), net::detached);
-
-   for (;;) {
-      auto socket = co_await acceptor.async_accept(net::use_awaitable);
-      auto session = std::make_shared<user_session>(std::move(socket));
-
-      auto on_user_msg = [db, recv, session](std::string const& msg)
-      {
-         db->send(command::ping, msg);
-         db->send(command::incr, "echo-counter");
-         recv->add_user_session(session);
-      };
-
-      session->start(on_user_msg);
-   }
-}
-
-int main()
-{
-   try {
-      net::io_context ioc{1};
-      net::signal_set signals(ioc, SIGINT, SIGTERM);
-      signals.async_wait([&](auto, auto){ ioc.stop(); });
-      co_spawn(ioc, listener(), net::detached);
-      ioc.run();
-   } catch (std::exception const& e) {
-      std::cerr << e.what() << std::endl;
-   }
-}

examples/hashes.cpp

@@ -1,88 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <iostream>
-#include <vector>
-#include <map>
-#include <unordered_map>
-
-#include <aedis/aedis.hpp>
-#include <aedis/src.hpp>
-
-#include "lib/net_utils.hpp"
-
-namespace resp3 = aedis::resp3;
-using aedis::redis::command;
-using aedis::redis::make_serializer;
-using resp3::adapt;
-
-namespace net = aedis::net;
-using net::async_write;
-using net::buffer;
-using net::dynamic_buffer;
-
-net::awaitable<void> containers()
-{
-   try {
-      auto socket = co_await connect();
-
-      std::map<std::string, std::string> map
-         { {"key1", "value1"}
-         , {"key2", "value2"}
-         , {"key3", "value3"}
-         };
-
-      // Creates and sends the request.
-      std::string request;
-      auto sr = make_serializer(request);
-      sr.push(command::hello, 3);
-      sr.push(command::flushall);
-      sr.push_range(command::hset, "key", std::cbegin(map), std::cend(map));
-      sr.push(command::hgetall, "key");
-      sr.push(command::hgetall, "key");
-      sr.push(command::hgetall, "key");
-      sr.push(command::quit);
-      co_await async_write(socket, buffer(request));
-
-      // The expected responses
-      int hset;
-      std::vector<std::string> hgetall1;
-      std::map<std::string, std::string> hgetall2;
-      std::unordered_map<std::string, std::string> hgetall3;
-
-      // Reads the responses.
-      std::string buffer;
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // hello
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // flushall
-      co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(hset));
-      co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(hgetall1));
-      co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(hgetall2));
-      co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(hgetall3));
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // quit
-
-      // Prints the responses.
-      std::cout << "hset: " << hset;
-      std::cout << "\nhgetall (as vector): ";
-      for (auto const& e: hgetall1) std::cout << e << ", ";
-      std::cout << "\nhgetall (as map): ";
-      for (auto const& e: hgetall2) std::cout << e.first << " ==> " << e.second << "; ";
-      std::cout << "\nhgetall (as unordered_map): ";
-      for (auto const& e: hgetall3) std::cout << e.first << " ==> " << e.second << "; ";
-      std::cout << "\n";
-
-   } catch (std::exception const& e) {
-      std::cerr << e.what() << std::endl;
-      exit(EXIT_FAILURE);
-   }
-}
-
-int main()
-{
-   net::io_context ioc;
-   co_spawn(ioc, containers(), net::detached);
-   ioc.run();
-}

examples/intro.cpp

@@ -1,68 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <iostream>
-
-#include <aedis/aedis.hpp>
-#include <aedis/src.hpp>
-
-#include "lib/net_utils.hpp"
-
-namespace resp3 = aedis::resp3;
-using aedis::redis::command;
-using aedis::redis::make_serializer;
-using resp3::adapt;
-
-namespace net = aedis::net;
-using net::async_write;
-using net::buffer;
-using net::dynamic_buffer;
-
-net::awaitable<void> ping()
-{
-   try {
-      auto socket = co_await connect(); // See lib/net_utils.hpp
-
-      // Creates and sends the request.
-      std::string request;
-      auto sr = make_serializer(request);
-      sr.push(command::hello, 3);
-      sr.push(command::flushall);
-      sr.push(command::ping);
-      sr.push(command::incr, "key");
-      sr.push(command::quit);
-      co_await async_write(socket, buffer(request));
-
-      // Responses we are interested in.
-      int incr;
-      std::string ping;
-
-      // Reads the responses to ping and incr, ignore the others.
-      std::string buffer;
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // hello
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // flushall 
-      co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(ping));
-      co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(incr));
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // quit
-
-      // Print the responses.
-      std::cout
-         << "ping: " << ping << "\n"
-         << "incr: " << incr << "\n";
-
-   } catch (std::exception const& e) {
-      std::cerr << e.what() << std::endl;
-      exit(EXIT_FAILURE);
-   }
-}
-
-int main()
-{
-   net::io_context ioc;
-   co_spawn(ioc, ping(), net::detached);
-   ioc.run();
-}

examples/key_expiration.cpp

@@ -1,93 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <iostream>
-#include <chrono>
-#include <optional>
-
-#include <aedis/src.hpp>
-#include <aedis/aedis.hpp>
-
-#include "lib/net_utils.hpp"
-
-namespace resp3 = aedis::resp3;
-using aedis::redis::command;
-using aedis::redis::make_serializer;
-using resp3::adapt;
-using resp3::node;
-
-namespace net = aedis::net;
-using net::async_write;
-using net::buffer;
-using net::dynamic_buffer;
-
-net::awaitable<void> key_expiration()
-{
-   try {
-      auto socket = co_await connect();
-
-      // Creates and sends the first request.
-      std::string request;
-      auto sr = make_serializer(request);
-      sr.push(command::hello, 3);
-      sr.push(command::flushall);
-      sr.push(command::set, "key", "Some payload", "EX", "2");
-      sr.push(command::get, "key");
-      co_await async_write(socket, buffer(request));
-
-      // Will hold the response to get.
-      std::optional<std::string> get;
-
-      // Reads the responses.
-      std::string rbuffer;
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer)); // hello
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer)); // flushall
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer)); // set
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer), adapt(get));
-
-      std::cout
-        << "Before expiration: " << get.has_value() << ", "
-        << *get << std::endl;
-
-      // Waits some seconds for the key to expire.
-      timer tm{socket.get_executor(), std::chrono::seconds{3}};
-      co_await tm.async_wait();
-
-      // Creates a request to get after expiration.
-      get.reset(); request.clear();
-      sr.push(command::get, "key");
-      sr.push(command::get, "key");
-      sr.push(command::quit);
-      co_await async_write(socket, buffer(request));
-
-      // Reads the response to the second request.
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer), adapt(get));
-
-      // Reading without an optional will result in an error.
-      std::string str;
-      boost::system::error_code ec;
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer),
-	          adapt(str), net::redirect_error(net::use_awaitable, ec));
-
-      // Quit
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer));
-
-      std::cout << "After expiration (optional): " << get.has_value() << "\n";
-      std::cout << "After expiration (non-optional): " << ec.message() << "\n";
-
-   } catch (std::exception const& e) {
-      std::cerr << e.what() << std::endl;
-      exit(EXIT_FAILURE);
-   }
-}
-
-int main()
-{
-   net::io_context ioc;
-   co_spawn(ioc, key_expiration(), net::detached);
-   ioc.run();
-}

examples/lib/net_utils.hpp

@@ -1,51 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <aedis/config.hpp>
-
-using tcp_socket = aedis::net::use_awaitable_t<>::as_default_on_t<aedis::net::ip::tcp::socket>;
-using tcp_resolver = aedis::net::use_awaitable_t<>::as_default_on_t<aedis::net::ip::tcp::resolver>;
-using timer = aedis::net::use_awaitable_t<>::as_default_on_t<aedis::net::steady_timer>;
-
-aedis::net::awaitable<tcp_socket>
-connect(
-   std::string host = "127.0.0.1",
-   std::string port = "6379")
-{
-   auto ex = co_await aedis::net::this_coro::executor;
-   tcp_resolver resolver{ex};
-   auto const res = co_await resolver.async_resolve(host, port);
-   tcp_socket socket{ex};
-   co_await aedis::net::async_connect(socket, res);
-   co_return std::move(socket);
-}
-
-//net::awaitable<void>
-//client::connection_manager()
-//{
-//   using namespace aedis::net::experimental::awaitable_operators;
-//   using tcp_resolver = aedis::net::use_awaitable_t<>::as_default_on_t<aedis::net::ip::tcp::resolver>;
-//
-//   for (;;) {
-//      tcp_resolver resolver{socket_.get_executor()};
-//      auto const res = co_await resolver.async_resolve("127.0.0.1", "6379");
-//      co_await net::async_connect(socket_, res);
-//
-//      co_await say_hello();
-//
-//      timer_.expires_at(std::chrono::steady_clock::time_point::max());
-//      co_await (reader() && writer());
-//
-//      socket_.close();
-//      timer_.cancel();
-//
-//      timer_.expires_after(std::chrono::seconds{1});
-//      boost::system::error_code ec;
-//      co_await timer_.async_wait(net::redirect_error(net::use_awaitable, ec));
-//   }
-//}
-

examples/lib/user_session.hpp

@@ -1,94 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#pragma once
-
-#include <functional>
-
-#include <aedis/config.hpp>
-
-// An example user session.
-
-namespace aedis
-{
-
-// Base class for user sessions.
-struct user_session_base {
-  virtual ~user_session_base() {}
-  virtual void deliver(std::string const& msg) = 0;
-};
-
-class user_session:
-   public user_session_base,
-   public std::enable_shared_from_this<user_session> {
-public:
-   user_session(net::ip::tcp::socket socket)
-   : socket_(std::move(socket))
-   , timer_(socket_.get_executor())
-      { timer_.expires_at(std::chrono::steady_clock::time_point::max()); }
-
-   void start(std::function<void(std::string const&)> on_msg)
-   {
-      co_spawn(socket_.get_executor(),
-          [self = shared_from_this(), on_msg]{ return self->reader(on_msg); },
-          net::detached);
-
-      co_spawn(socket_.get_executor(),
-          [self = shared_from_this()]{ return self->writer(); },
-          net::detached);
-   }
-
-   void deliver(std::string const& msg)
-   {
-      write_msgs_.push_back(msg);
-      timer_.cancel_one();
-   }
-
-private:
-   net::awaitable<void>
-   reader(std::function<void(std::string const&)> on_msg)
-   {
-      try {
-         for (std::string msg;;) {
-            auto const n = co_await net::async_read_until(socket_, net::dynamic_buffer(msg, 1024), "\n", net::use_awaitable);
-            on_msg(msg);
-            msg.erase(0, n);
-         }
-      } catch (std::exception&) {
-         stop();
-      }
-   }
-
-   net::awaitable<void> writer()
-   {
-      try {
-         while (socket_.is_open()) {
-            if (write_msgs_.empty()) {
-               boost::system::error_code ec;
-               co_await timer_.async_wait(redirect_error(net::use_awaitable, ec));
-            } else {
-               co_await net::async_write(socket_, net::buffer(write_msgs_.front()), net::use_awaitable);
-               write_msgs_.pop_front();
-            }
-         }
-      } catch (std::exception&) {
-        stop();
-      }
-   }
-
-   void stop()
-   {
-      socket_.close();
-      timer_.cancel();
-   }
-
-   net::ip::tcp::socket socket_;
-   net::steady_timer timer_;
-   std::deque<std::string> write_msgs_;
-};
-
-} // aedis

examples/lists.cpp

@@ -1,89 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <iostream>
-#include <string>
-#include <vector>
-#include <list>
-#include <deque>
-
-#include <aedis/aedis.hpp>
-#include <aedis/src.hpp>
-
-#include "lib/net_utils.hpp"
-
-namespace resp3 = aedis::resp3;
-using aedis::redis::command;
-using aedis::redis::make_serializer;
-using resp3::adapt;
-
-namespace net = aedis::net;
-using net::async_write;
-using net::buffer;
-using net::dynamic_buffer;
-
-net::awaitable<void> ping()
-{
-   try {
-      auto socket = co_await connect();
-
-      // Creates and sends the request.
-      auto vec  = {1, 2, 3, 4, 5, 6};
-      std::string request;
-      auto sr = make_serializer(request);
-      sr.push(command::hello, 3);
-      sr.push(command::flushall);
-      sr.push_range(command::rpush, "key", std::cbegin(vec), std::cend(vec));
-      sr.push(command::lrange, "key", 0, -1);
-      sr.push(command::lrange, "key", 0, -1);
-      sr.push(command::lrange, "key", 0, -1);
-      sr.push(command::lrange, "key", 0, -1);
-      sr.push(command::quit);
-      co_await async_write(socket, buffer(request));
-
-      // Expected responses.
-      int rpush;
-      std::vector<std::string> svec;
-      std::list<std::string> slist;
-      std::deque<std::string> sdeq;
-      std::vector<int> ivec;
-
-      // Reads the responses.
-      std::string rbuffer;
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer)); // hello
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer)); // flushall
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer), adapt(rpush)); // rpush
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer), adapt(svec));
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer), adapt(slist));
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer), adapt(sdeq));
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer), adapt(ivec));
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer)); // quit
-
-      // Prints the responses.
-      std::cout << "rpush: " << rpush;
-      std::cout << "\nlrange (as vector): ";
-      for (auto e: svec) std::cout << e << " ";
-      std::cout << "\nlrange (as list): ";
-      for (auto e: slist) std::cout << e << " ";
-      std::cout << "\nlrange (as deque): ";
-      for (auto e: sdeq) std::cout << e << " ";
-      std::cout << "\nlrange (as vector<int>): ";
-      for (auto e: ivec) std::cout << e << " ";
-      std::cout << std::endl;
-
-   } catch (std::exception const& e) {
-      std::cerr << e.what() << std::endl;
-      exit(EXIT_FAILURE);
-   }
-}
-
-int main()
-{
-   net::io_context ioc;
-   co_spawn(ioc, ping(), net::detached);
-   ioc.run();
-}

examples/response_adapter.cpp

@@ -1,82 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres at gmail dot com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <iostream>
-#include <string_view>
-
-#include <aedis/aedis.hpp>
-#include <aedis/src.hpp>
-
-#include "lib/net_utils.hpp"
-
-namespace resp3 = aedis::resp3;
-using aedis::redis::command;
-using resp3::type;
-using aedis::redis::make_serializer;
-using resp3::adapt;
-
-namespace net = aedis::net;
-using net::async_write;
-using net::buffer;
-using net::dynamic_buffer;
-
-// An adapter that prints the data it receives in the screen.
-struct myadapter {
-   void operator()(
-      type t,
-      std::size_t aggregate_size,
-      std::size_t depth,
-      char const* data,
-      std::size_t size,
-      std::error_code&)
-      {
-         std::cout
-            << "Type: " << t << "\n"
-            << "Aggregate_size: " << aggregate_size << "\n"
-            << "Depth: " << depth << "\n"
-            << "Data: " << std::string_view(data, size) << "\n"
-            << "----------------------" << "\n";
-      }
-};
-
-net::awaitable<void> adapter_example()
-{
-   try {
-      auto socket = co_await connect();
-
-      auto list = {"one", "two", "three"};
-
-      // Creates and sends the request.
-      std::string request;
-      auto sr = make_serializer(request);
-      sr.push(command::hello, 3);
-      sr.push(command::flushall);
-      sr.push_range(command::rpush, "key", std::cbegin(list), std::cend(list));
-      sr.push(command::lrange, "key", 0, -1);
-      sr.push(command::quit);
-      co_await async_write(socket, buffer(request));
-
-      // Reads the responses.
-      std::string rbuffer;
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer)); // hello
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer)); // flushall
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer)); // rpush
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer), myadapter{}); // lrange
-      co_await resp3::async_read(socket, dynamic_buffer(rbuffer)); // quit
-
-   } catch (std::exception const& e) {
-      std::cerr << e.what() << std::endl;
-      exit(EXIT_FAILURE);
-   }
-}
-
-int main()
-{
-   net::io_context ioc;
-   co_spawn(ioc, adapter_example(), net::detached);
-   ioc.run();
-}

examples/serialization.cpp

@@ -1,109 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <string>
-#include <iostream>
-#include <charconv>
-
-#include <aedis/aedis.hpp>
-#include <aedis/src.hpp>
-
-#include "lib/net_utils.hpp"
-
-namespace resp3 = aedis::resp3;
-using aedis::redis::make_serializer;
-using aedis::redis::command;
-using resp3::adapt;
-
-namespace net = aedis::net;
-using net::async_write;
-using net::buffer;
-using net::dynamic_buffer;
-
-// Define the to_string and from_string functions for your own data
-// types.
-
-// The struct we would like to store in redis using our own
-// serialization.
-struct mydata {
-  int a;
-  int b;
-};
-
-// Serializes to Tab Separated Value (TSV).
-std::string to_string(mydata const& obj)
-{
-   return std::to_string(obj.a) + '\t' + std::to_string(obj.b);
-}
-
-// Deserializes TSV.
-void
-from_string(
-   mydata& obj,
-   char const* data,
-   std::size_t size,
-   std::error_code& ec)
-{
-   auto const* end = data + size;
-   auto const* pos = std::find(data, end, '\t');
-   assert(pos != end); // Or use your own error code.
-
-   auto const res1 = std::from_chars(data, pos, obj.a);
-   if (res1.ec != std::errc()) {
-      ec = std::make_error_code(res1.ec);
-      return;
-   }
-
-   auto const res2 = std::from_chars(pos + 1, end, obj.b);
-   if (res2.ec != std::errc()) {
-      ec = std::make_error_code(res2.ec);
-      return;
-   }
-}
-
-net::awaitable<void> serialization()
-{
-   try {
-      auto socket = co_await connect();
-
-      mydata obj{21, 22};
-
-      std::string request;
-      auto sr = make_serializer(request);
-      sr.push(command::hello, 3);
-      sr.push(command::flushall);
-      sr.push(command::set, "key", obj);
-      sr.push(command::get, "key");
-      sr.push(command::quit);
-      co_await async_write(socket, buffer(request));
-
-      // The response.
-      mydata get;
-
-      // Reads the responses.
-      std::string buffer;
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // hello
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // flushall
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // set
-      co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(get));
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // quit
-
-      // Print the responses.
-      std::cout << "get: a = " << get.a << ", b = " << get.b << "\n";
-
-   } catch (std::exception const& e) {
-      std::cerr << e.what() << std::endl;
-      exit(EXIT_FAILURE);
-   }
-}
-
-int main()
-{
-   net::io_context ioc;
-   co_spawn(ioc, serialization(), net::detached);
-   ioc.run();
-}

examples/sets.cpp

@@ -1,85 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres at gmail dot com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <iostream>
-#include <set>
-#include <vector>
-#include <unordered_map>
-
-#include <aedis/aedis.hpp>
-#include <aedis/src.hpp>
-
-#include "lib/net_utils.hpp"
-
-namespace resp3 = aedis::resp3;
-using aedis::redis::command;
-using aedis::redis::make_serializer;
-using resp3::adapt;
-
-namespace net = aedis::net;
-using net::async_write;
-using net::buffer;
-using net::dynamic_buffer;
-
-net::awaitable<void> containers()
-{
-   try {
-      auto socket = co_await connect();
-
-      std::set<std::string> set
-         {"one", "two", "three", "four"};
-
-      // Creates and sends the request.
-      std::string request;
-      auto sr = make_serializer(request);
-      sr.push(command::hello, 3);
-      sr.push(command::flushall);
-      sr.push_range(command::sadd, "key", std::cbegin(set), std::cend(set));
-      sr.push(command::smembers, "key");
-      sr.push(command::smembers, "key");
-      sr.push(command::smembers, "key");
-      sr.push(command::quit);
-      co_await async_write(socket, buffer(request));
-
-      // Expected responses.
-      int sadd;
-      std::vector<std::string> smembers1;
-      std::set<std::string> smembers2;
-      std::unordered_set<std::string> smembers3;
-
-      // Reads the responses.
-      std::string buffer;
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // hello
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // flushall
-      co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(sadd));
-      co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(smembers1));
-      co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(smembers2));
-      co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(smembers3));
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // quit
-
-      // Prints the responses.
-      std::cout << "sadd: " << sadd;
-      std::cout << "\nsmembers (as vector): ";
-      for (auto const& e: smembers1) std::cout << e << " ";
-      std::cout << "\nsmembers (as set): ";
-      for (auto const& e: smembers2) std::cout << e << " ";
-      std::cout << "\nsmembers (as unordered_set): ";
-      for (auto const& e: smembers3) std::cout << e << " ";
-      std::cout << "\n";
-
-   } catch (std::exception const& e) {
-      std::cerr << e.what() << std::endl;
-      exit(EXIT_FAILURE);
-   }
-}
-
-int main()
-{
-   net::io_context ioc;
-   co_spawn(ioc, containers(), net::detached);
-   ioc.run();
-}

examples/subscriber.cpp

@@ -1,86 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres at gmail dot com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <iostream>
-#include <chrono>
-
-#include <aedis/aedis.hpp>
-#include <aedis/src.hpp>
-
-#include "lib/net_utils.hpp"
-
-namespace resp3 = aedis::resp3;
-using aedis::redis::command;
-using aedis::redis::make_serializer;
-using resp3::adapt;
-using resp3::node;
-
-namespace net = aedis::net;
-using net::async_write;
-using net::buffer;
-using net::dynamic_buffer;
-
-/* In this example we send a subscription to a channel and start
-   reading server side messages indefinitely.
-  
-   Notice we store the id of the connection (attributed by the redis
-   server) to be able to identify it (in the logs for example).
-  
-   After starting the example you can test it by sending messages with
-   redis-cli like this
-  
-      $ redis-cli -3
-      127.0.0.1:6379> PUBLISH channel1 some-message
-      (integer) 3
-      127.0.0.1:6379>
-  
-   The messages will then appear on the terminal you are running the
-   example.
- */
-net::awaitable<void> subscriber()
-{
-   try {
-      auto socket = co_await connect();
-
-      std::string request;
-      auto sr = make_serializer(request);
-      sr.push(command::hello, "3");
-      sr.push(command::subscribe, "channel1", "channel2");
-      co_await async_write(socket, buffer(request));
-
-      std::vector<node> resp;
-
-      // Reads the response to the hello command.
-      std::string buffer;
-      co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(resp));
-      co_await resp3::async_read(socket, dynamic_buffer(buffer));
-
-      // Saves the id of this connection.
-      auto const id = resp.at(8).data;
-
-      // Loops to receive server pushes.
-      for (;;) {
-         resp.clear();
-         co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(resp));
-
-         std::cout
-            << "Subscriber " << id << ":\n"
-            << resp << std::endl;
-      }
-   } catch (std::exception const& e) {
-      std::cerr << e.what() << std::endl;
-   }
-}
-
-int main()
-{
-   net::io_context ioc;
-   co_spawn(ioc, subscriber(), net::detached);
-   co_spawn(ioc, subscriber(), net::detached);
-   co_spawn(ioc, subscriber(), net::detached);
-   ioc.run();
-}

examples/sync.cpp

@@ -1,55 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres@gmail.com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <iostream>
-#include <string>
-
-#include <aedis/aedis.hpp>
-#include <aedis/src.hpp>
-
-namespace resp3 = aedis::resp3;
-using aedis::redis::command;
-using aedis::redis::make_serializer;
-using aedis::resp3::adapt;
-
-namespace net = aedis::net;
-using net::dynamic_buffer;
-using net::ip::tcp;
-
-int main()
-{
-   try {
-      net::io_context ioc;
-      tcp::resolver resv{ioc};
-      auto const res = resv.resolve("127.0.0.1", "6379");
-      tcp::socket socket{ioc};
-      connect(socket, res);
-
-      // Creates and sends the request to redis.
-      std::string request;
-      auto sr = make_serializer(request);
-      sr.push(command::hello, 3);
-      sr.push(command::ping);
-      sr.push(command::quit);
-      net::write(socket, net::buffer(request));
-
-      // Will store the response to ping.
-      std::string resp;
-
-      // Reads the responses to all commands in the request.
-      std::string buffer;
-      resp3::read(socket, dynamic_buffer(buffer)); // hello (ignored)
-      resp3::read(socket, dynamic_buffer(buffer), adapt(resp));
-      resp3::read(socket, dynamic_buffer(buffer)); // quit (ignored)
-
-      std::cout << "Ping: " << resp << std::endl;
-
-   } catch (std::exception const& e) {
-      std::cerr << e.what() << std::endl;
-      exit(EXIT_FAILURE);
-   }
-}

examples/transaction.cpp

@@ -1,85 +0,0 @@
-/* Copyright (c) 2019 Marcelo Zimbres Silva (mzimbres at gmail dot com)
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-
-#include <iostream>
-#include <vector>
-#include <tuple>
-#include <array>
-
-#include <aedis/aedis.hpp>
-#include <aedis/src.hpp>
-
-#include "lib/net_utils.hpp"
-
-namespace resp3 = aedis::resp3;
-using aedis::redis::command;
-using aedis::redis::make_serializer;
-using resp3::adapt;
-
-namespace net = aedis::net;
-using net::async_write;
-using net::buffer;
-using net::dynamic_buffer;
-
-net::awaitable<void> transaction()
-{
-   try {
-      auto socket = co_await connect();
-
-      auto list  = {"one", "two", "three"};
-
-      std::string request;
-      auto sr = make_serializer(request);
-      sr.push(command::hello, 3);
-      sr.push(command::flushall);
-      sr.push(command::multi); // Starts a transaction
-      sr.push(command::ping, "Some message");
-      sr.push(command::incr, "incr1-key");
-      sr.push_range(command::rpush, "list-key", std::cbegin(list), std::cend(list));
-      sr.push(command::lrange, "list-key", 0, -1);
-      sr.push(command::incr, "incr2-key");
-      sr.push(command::exec); // Ends the transaction.
-      sr.push(command::quit);
-      co_await async_write(socket, buffer(request));
-
-      // Expected responses.
-      std::tuple<std::string, int, int, std::vector<std::string>, int> execs;
-
-      // Reads the response.
-      std::string buffer;
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // hello
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // flushall
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // multi
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // ping
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // incr
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // rpush
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // lrange
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // incr
-      co_await resp3::async_read(socket, dynamic_buffer(buffer), adapt(execs));
-      co_await resp3::async_read(socket, dynamic_buffer(buffer)); // quit
-
-      // Prints the response to the transaction.
-      std::cout << "ping: " << std::get<0>(execs) << "\n";
-      std::cout << "incr1: " << std::get<1>(execs) << "\n";
-      std::cout << "rpush: " << std::get<2>(execs) << "\n";
-      std::cout << "lrange: ";
-      for (auto const& e: std::get<3>(execs)) std::cout << e << " ";
-      std::cout << "\n";
-      std::cout << "incr2: " << std::get<4>(execs) << "\n";
-
-   } catch (std::exception const& e) {
-      std::cerr << e.what() << std::endl;
-      exit(EXIT_FAILURE);
-   }
-}
-
-int main()
-{
-   net::io_context ioc;
-   co_spawn(ioc, transaction(), net::detached);
-   ioc.run();
-}

include/boost/redis.hpp

@@ -0,0 +1,28 @@
+/* Copyright (c) 2018-2024 Marcelo Zimbres Silva (mzimbres@gmail.com)
+ *
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE.txt)
+ */
+
+#ifndef BOOST_REDIS_HPP
+#define BOOST_REDIS_HPP
+
+#include <boost/redis/config.hpp>
+#include <boost/redis/error.hpp>
+#include <boost/redis/connection.hpp>
+#include <boost/redis/request.hpp>
+#include <boost/redis/response.hpp>
+#include <boost/redis/ignore.hpp>
+#include <boost/redis/logger.hpp>
+
+/** @defgroup high-level-api Reference
+ *
+ *  This page contains the documentation of the Aedis high-level API.
+ */
+
+/** @defgroup low-level-api Reference
+ *
+ *  This page contains the documentation of the Aedis low-level API.
+ */
+
+#endif // BOOST_REDIS_HPP