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<div id="projectbrief">A redis client library</div>
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> *</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> * Distributed under the Boost Software License, Version 1.0. (See</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> * accompanying file LICENSE.txt)</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> */</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span> </div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="preprocessor">#include &lt;boost/asio.hpp&gt;</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#if defined(BOOST_ASIO_HAS_CO_AWAIT)</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include &lt;boost/asio/experimental/awaitable_operators.hpp&gt;</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="preprocessor">#include &lt;aedis.hpp&gt;</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span> </div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include &quot;common/common.hpp&quot;</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="keyword">namespace </span>net = boost::asio;</div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="keyword">namespace </span>resp3 = aedis::resp3;</div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="keyword">using namespace </span>net::experimental::awaitable_operators;</div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="keyword">using </span>signal_set = net::use_awaitable_t&lt;&gt;::as_default_on_t&lt;net::signal_set&gt;;</div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="keyword">using </span>steady_timer = net::use_awaitable_t&lt;&gt;::as_default_on_t&lt;net::steady_timer&gt;;</div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="keyword">using </span><a class="code hl_function" href="group__high-level-api.html#gac56bb1a8df93445853a4b9dae2d97b6e">aedis::adapt</a>;</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="comment">/* This example will subscribe and read pushes indefinitely.</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="comment"> *</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="comment"> * To test send messages with redis-cli</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="comment"> *</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="comment"> * $ redis-cli -3</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="comment"> * 127.0.0.1:6379&gt; PUBLISH channel some-message</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="comment"> * (integer) 3</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="comment"> * 127.0.0.1:6379&gt;</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="comment"> *</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="comment"> * To test reconnection try, for example, to close all clients currently</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="comment"> * connected to the Redis instance</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="comment"> *</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="comment"> * $ redis-cli</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="comment"> * &gt; CLIENT kill TYPE pubsub</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="comment"> */</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> </div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="comment">// Receives pushes.</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="keyword">auto</span> receiver(std::shared_ptr&lt;connection&gt; conn) -&gt; net::awaitable&lt;void&gt;</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span>{</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="keywordflow">for</span> (std::vector&lt;<a class="code hl_struct" href="structaedis_1_1resp3_1_1node.html">resp3::node&lt;std::string&gt;</a>&gt; resp;;) {</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">co_await</span> conn-&gt;async_receive(<a class="code hl_function" href="group__high-level-api.html#gac56bb1a8df93445853a4b9dae2d97b6e">adapt</a>(resp));</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> std::cout &lt;&lt; resp.at(1).value &lt;&lt; <span class="stringliteral">&quot; &quot;</span> &lt;&lt; resp.at(2).value &lt;&lt; <span class="stringliteral">&quot; &quot;</span> &lt;&lt; resp.at(3).value &lt;&lt; std::endl;</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> resp.clear();</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> }</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span>}</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span><span class="keyword">auto</span> async_main() -&gt; net::awaitable&lt;void&gt;</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span>{</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">auto</span> ex = <span class="keyword">co_await</span> net::this_coro::executor;</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">auto</span> conn = std::make_shared&lt;connection&gt;(ex);</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> signal_set sig{ex, SIGINT, SIGTERM};</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> steady_timer timer{ex};</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> </div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <a class="code hl_class" href="classaedis_1_1resp3_1_1request.html">resp3::request</a> req;</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> req.<a class="code hl_function" href="classaedis_1_1resp3_1_1request.html#a1a7b7e58ed214bcd962d20b65ed35eca">push</a>(<span class="stringliteral">&quot;HELLO&quot;</span>, 3);</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> req.<a class="code hl_function" href="classaedis_1_1resp3_1_1request.html#a1a7b7e58ed214bcd962d20b65ed35eca">push</a>(<span class="stringliteral">&quot;SUBSCRIBE&quot;</span>, <span class="stringliteral">&quot;channel&quot;</span>);</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="comment">// The loop will reconnect on connection lost. To exit type Ctrl-C twice.</span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keywordflow">for</span> (;;) {</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="keyword">co_await</span> connect(conn, <span class="stringliteral">&quot;127.0.0.1&quot;</span>, <span class="stringliteral">&quot;6379&quot;</span>);</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">co_await</span> ((conn-&gt;async_run() || healthy_checker(conn) || sig.async_wait() ||</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> receiver(conn)) &amp;&amp; conn-&gt;async_exec(req));</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> </div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> conn-&gt;reset_stream();</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> timer.expires_after(std::chrono::seconds{1});</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keyword">co_await</span> timer.async_wait();</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> }</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span>}</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> </div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span><span class="preprocessor">#endif </span><span class="comment">// defined(BOOST_ASIO_HAS_CO_AWAIT)</span></div>
<div class="ttc" id="aclassaedis_1_1resp3_1_1request_html"><div class="ttname"><a href="classaedis_1_1resp3_1_1request.html">aedis::resp3::request</a></div><div class="ttdoc">Creates Redis requests.</div><div class="ttdef"><b>Definition:</b> <a href="request_8hpp_source.html#l00168">request.hpp:168</a></div></div>
<div class="ttc" id="aclassaedis_1_1resp3_1_1request_html_a1a7b7e58ed214bcd962d20b65ed35eca"><div class="ttname"><a href="classaedis_1_1resp3_1_1request.html#a1a7b7e58ed214bcd962d20b65ed35eca">aedis::resp3::request::push</a></div><div class="ttdeci">void push(std::string_view cmd, Ts const &amp;... args)</div><div class="ttdoc">Appends a new command to the end of the request.</div><div class="ttdef"><b>Definition:</b> <a href="request_8hpp_source.html#l00260">request.hpp:260</a></div></div>
<div class="ttc" id="agroup__high-level-api_html_gac56bb1a8df93445853a4b9dae2d97b6e"><div class="ttname"><a href="group__high-level-api.html#gac56bb1a8df93445853a4b9dae2d97b6e">aedis::adapt</a></div><div class="ttdeci">auto adapt(std::size_t max_read_size=(std::numeric_limits&lt; std::size_t &gt;::max)()) noexcept</div><div class="ttdoc">Creates an adapter that ignores responses.</div><div class="ttdef"><b>Definition:</b> <a href="adapt_8hpp_source.html#l00199">adapt.hpp:199</a></div></div>
<div class="ttc" id="astructaedis_1_1resp3_1_1node_html"><div class="ttname"><a href="structaedis_1_1resp3_1_1node.html">aedis::resp3::node</a></div><div class="ttdoc">A node in the response tree.</div><div class="ttdef"><b>Definition:</b> <a href="node_8hpp_source.html#l00024">node.hpp:24</a></div></div>
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