Google Git
Sign in
apache / qpid-site / cec5ef152fbc98a1ce2cfe2e67b80c051056437c / . / content / releases / qpid-proton-0.25.0 / proton / cpp / examples / broker.cpp.html
blob: 1d964ecc828d862034a63c76fa87a25b53ad9e8d [file] [log] [blame]
<!DOCTYPE html>
<!--
-
- Licensed to the Apache Software Foundation (ASF) under one
- or more contributor license agreements. See the NOTICE file
- distributed with this work for additional information
- regarding copyright ownership. The ASF licenses this file
- to you under the Apache License, Version 2.0 (the
- "License"); you may not use this file except in compliance
- with the License. You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing,
- software distributed under the License is distributed on an
- "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- KIND, either express or implied. See the License for the
- specific language governing permissions and limitations
- under the License.
-
-->
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>broker.cpp - Apache Qpid&#8482;</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<link rel="stylesheet" href="/site.css" type="text/css" async="async"/>
<link rel="stylesheet" href="/deferred.css" type="text/css" defer="defer"/>
<script type="text/javascript">var _deferredFunctions = [];</script>
<script type="text/javascript" src="/deferred.js" defer="defer"></script>
<!--[if lte IE 8]>
<link rel="stylesheet" href="/ie.css" type="text/css"/>
<script type="text/javascript" src="/html5shiv.js"></script>
<![endif]-->
<!-- Redirects for `go get` and godoc.org -->
<meta name="go-import"
content="qpid.apache.org git https://git-wip-us.apache.org/repos/asf/qpid-proton.git"/>
<meta name="go-source"
content="qpid.apache.org
https://github.com/apache/qpid-proton/blob/go1/README.md
https://github.com/apache/qpid-proton/tree/go1{/dir}
https://github.com/apache/qpid-proton/blob/go1{/dir}/{file}#L{line}"/>
</head>
<body>
<div id="-content">
<div id="-top" class="panel">
<a id="-menu-link"><img width="16" height="16" src="" alt="Menu"/></a>
<a id="-search-link"><img width="22" height="16" src="" alt="Search"/></a>
<ul id="-global-navigation">
<li><a id="-logotype" href="/index.html">Apache Qpid<sup>&#8482;</sup></a></li>
<li><a href="/documentation.html">Documentation</a></li>
<li><a href="/download.html">Download</a></li>
<li><a href="/discussion.html">Discussion</a></li>
</ul>
</div>
<div id="-menu" class="panel" style="display: none;">
<div class="flex">
<section>
<h3>Project</h3>
<ul>
<li><a href="/overview.html">Overview</a></li>
<li><a href="/components/index.html">Components</a></li>
<li><a href="/releases/index.html">Releases</a></li>
</ul>
</section>
<section>
<h3>Messaging APIs</h3>
<ul>
<li><a href="/proton/index.html">Qpid Proton</a></li>
<li><a href="/components/jms/index.html">Qpid JMS</a></li>
<li><a href="/components/messaging-api/index.html">Qpid Messaging API</a></li>
</ul>
</section>
<section>
<h3>Servers and tools</h3>
<ul>
<li><a href="/components/broker-j/index.html">Broker-J</a></li>
<li><a href="/components/cpp-broker/index.html">C++ broker</a></li>
<li><a href="/components/dispatch-router/index.html">Dispatch router</a></li>
</ul>
</section>
<section>
<h3>Resources</h3>
<ul>
<li><a href="/dashboard.html">Dashboard</a></li>
<li><a href="https://cwiki.apache.org/confluence/display/qpid/Index">Wiki</a></li>
<li><a href="/resources.html">More resources</a></li>
</ul>
</section>
</div>
</div>
<div id="-search" class="panel" style="display: none;">
<form action="http://www.google.com/search" method="get">
<input type="hidden" name="sitesearch" value="qpid.apache.org"/>
<input type="text" name="q" maxlength="255" autofocus="autofocus" tabindex="1"/>
<button type="submit">Search</button>
<a href="/search.html">More ways to search</a>
</form>
</div>
<div id="-middle" class="panel">
<ul id="-path-navigation"><li><a href="/index.html">Home</a></li><li><a href="/releases/index.html">Releases</a></li><li><a href="/releases/qpid-proton-0.25.0/index.html">Qpid Proton 0.25.0</a></li><li><a href="/releases/qpid-proton-0.25.0/proton/cpp/examples/index.html">Proton C++ Examples</a></li><li>broker.cpp</li></ul>
<div id="-middle-content">
<h1>broker.cpp</h1>
<div class="highlight"><pre><span></span><span class="cp">#include</span> <span class="cpf">&quot;options.hpp&quot;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/connection.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/connection_options.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/container.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/delivery.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/error_condition.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/listen_handler.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/listener.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/message.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/messaging_handler.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/receiver_options.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/sender_options.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/source_options.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/target.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/target_options.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/tracker.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/transport.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/work_queue.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;deque&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;iostream&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;map&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;string&gt;</span><span class="cp"></span>
<span class="cp">#if PN_CPP_HAS_STD_THREAD</span>
<span class="cp">#include</span> <span class="cpf">&lt;thread&gt;</span><span class="cp"></span>
<span class="cp">#endif</span>
<span class="cp">#include</span> <span class="cpf">&quot;fake_cpp11.hpp&quot;</span><span class="cp"></span>
<span class="c1">// This is a simplified model for a message broker, that only allows for</span>
<span class="c1">// messages to go to a single receiver.</span>
<span class="c1">//</span>
<span class="c1">// This broker is multithread safe and if compiled with C++11 with a multithreaded Proton</span>
<span class="c1">// binding library will use as many threads as there are thread resources available (usually</span>
<span class="c1">// cores)</span>
<span class="c1">//</span>
<span class="c1">// Queues are only created and never destroyed</span>
<span class="c1">//</span>
<span class="c1">// Broker Entities (that need to be individually serialised)</span>
<span class="c1">// QueueManager - Creates new queues, finds queues</span>
<span class="c1">// Queue - Queues msgs, records subscribers, sends msgs to subscribers</span>
<span class="c1">// Connection - Receives Messages from network, sends messages to network.</span>
<span class="c1">// Work</span>
<span class="c1">// FindQueue(queueName, connection) - From a Connection to the QueueManager</span>
<span class="c1">// This will create the queue if it doesn&#39;t already exist and send a BoundQueue</span>
<span class="c1">// message back to the connection.</span>
<span class="c1">// BoundQueue(queue) - From the QueueManager to a Connection</span>
<span class="c1">//</span>
<span class="c1">// QueueMsg(msg) - From a Connection (receiver) to a Queue</span>
<span class="c1">// Subscribe(sender) - From a Connection (sender) to a Queue</span>
<span class="c1">// Flow(sender, credit) - From a Connection (sender) to a Queue</span>
<span class="c1">// Unsubscribe(sender) - From a Connection (sender) to a Queue</span>
<span class="c1">//</span>
<span class="c1">// SendMsg(msg) - From a Queue to a Connection (sender)</span>
<span class="c1">// Unsubscribed() - From a Queue to a Connection (sender)</span>
<span class="c1">// Simple debug output</span>
<span class="kt">bool</span> <span class="n">verbose</span><span class="p">;</span>
<span class="cp">#define DOUT(x) do {if (verbose) {x};} while (false)</span>
<span class="k">class</span> <span class="nc">Queue</span><span class="p">;</span>
<span class="k">class</span> <span class="nc">Sender</span><span class="p">;</span>
<span class="k">typedef</span> <span class="n">std</span><span class="o">::</span><span class="n">map</span><span class="o">&lt;</span><span class="n">proton</span><span class="o">::</span><span class="n">sender</span><span class="p">,</span> <span class="n">Sender</span><span class="o">*&gt;</span> <span class="n">senders</span><span class="p">;</span>
<span class="k">class</span> <span class="nc">Sender</span> <span class="o">:</span> <span class="k">public</span> <span class="n">proton</span><span class="o">::</span><span class="n">messaging_handler</span> <span class="p">{</span>
<span class="k">friend</span> <span class="k">class</span> <span class="nc">connection_handler</span><span class="p">;</span>
<span class="n">proton</span><span class="o">::</span><span class="n">sender</span> <span class="n">sender_</span><span class="p">;</span>
<span class="n">senders</span><span class="o">&amp;</span> <span class="n">senders_</span><span class="p">;</span>
<span class="n">proton</span><span class="o">::</span><span class="n">work_queue</span><span class="o">&amp;</span> <span class="n">work_queue_</span><span class="p">;</span>
<span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">queue_name_</span><span class="p">;</span>
<span class="n">Queue</span><span class="o">*</span> <span class="n">queue_</span><span class="p">;</span>
<span class="kt">int</span> <span class="n">pending_credit_</span><span class="p">;</span>
<span class="c1">// Messaging handlers</span>
<span class="kt">void</span> <span class="nf">on_sendable</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">sender</span> <span class="o">&amp;</span><span class="n">sender</span><span class="p">)</span> <span class="n">OVERRIDE</span><span class="p">;</span>
<span class="kt">void</span> <span class="nf">on_sender_close</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">sender</span> <span class="o">&amp;</span><span class="n">sender</span><span class="p">)</span> <span class="n">OVERRIDE</span><span class="p">;</span>
<span class="k">public</span><span class="o">:</span>
<span class="n">Sender</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">sender</span> <span class="n">s</span><span class="p">,</span> <span class="n">senders</span><span class="o">&amp;</span> <span class="n">ss</span><span class="p">)</span> <span class="o">:</span>
<span class="n">sender_</span><span class="p">(</span><span class="n">s</span><span class="p">),</span> <span class="n">senders_</span><span class="p">(</span><span class="n">ss</span><span class="p">),</span> <span class="n">work_queue_</span><span class="p">(</span><span class="n">s</span><span class="p">.</span><span class="n">work_queue</span><span class="p">()),</span> <span class="n">queue_</span><span class="p">(</span><span class="mi">0</span><span class="p">),</span> <span class="n">pending_credit_</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
<span class="p">{}</span>
<span class="kt">bool</span> <span class="n">add</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">work</span> <span class="n">f</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="n">work_queue_</span><span class="p">.</span><span class="n">add</span><span class="p">(</span><span class="n">f</span><span class="p">);</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="n">boundQueue</span><span class="p">(</span><span class="n">Queue</span><span class="o">*</span> <span class="n">q</span><span class="p">,</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">qn</span><span class="p">);</span>
<span class="kt">void</span> <span class="nf">sendMsg</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">message</span> <span class="n">m</span><span class="p">)</span> <span class="p">{</span>
<span class="n">DOUT</span><span class="p">(</span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;Sender: &quot;</span> <span class="o">&lt;&lt;</span> <span class="k">this</span> <span class="o">&lt;&lt;</span> <span class="s">&quot; sending</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">;);</span>
<span class="n">sender_</span><span class="p">.</span><span class="n">send</span><span class="p">(</span><span class="n">m</span><span class="p">);</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="nf">unsubscribed</span><span class="p">()</span> <span class="p">{</span>
<span class="n">DOUT</span><span class="p">(</span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;Sender: &quot;</span> <span class="o">&lt;&lt;</span> <span class="k">this</span> <span class="o">&lt;&lt;</span> <span class="s">&quot; deleting</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">;);</span>
<span class="k">delete</span> <span class="k">this</span><span class="p">;</span>
<span class="p">}</span>
<span class="p">};</span>
<span class="c1">// Queue - round robin subscriptions</span>
<span class="k">class</span> <span class="nc">Queue</span> <span class="p">{</span>
<span class="n">proton</span><span class="o">::</span><span class="n">work_queue</span> <span class="n">work_queue_</span><span class="p">;</span>
<span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">name_</span><span class="p">;</span>
<span class="n">std</span><span class="o">::</span><span class="n">deque</span><span class="o">&lt;</span><span class="n">proton</span><span class="o">::</span><span class="n">message</span><span class="o">&gt;</span> <span class="n">messages_</span><span class="p">;</span>
<span class="k">typedef</span> <span class="n">std</span><span class="o">::</span><span class="n">map</span><span class="o">&lt;</span><span class="n">Sender</span><span class="o">*</span><span class="p">,</span> <span class="kt">int</span><span class="o">&gt;</span> <span class="n">subscriptions</span><span class="p">;</span> <span class="c1">// With credit</span>
<span class="n">subscriptions</span> <span class="n">subscriptions_</span><span class="p">;</span>
<span class="n">subscriptions</span><span class="o">::</span><span class="n">iterator</span> <span class="n">current_</span><span class="p">;</span>
<span class="kt">void</span> <span class="nf">tryToSend</span><span class="p">()</span> <span class="p">{</span>
<span class="n">DOUT</span><span class="p">(</span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;Queue: &quot;</span> <span class="o">&lt;&lt;</span> <span class="k">this</span> <span class="o">&lt;&lt;</span> <span class="s">&quot; tryToSend: &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">subscriptions_</span><span class="p">.</span><span class="n">size</span><span class="p">(););</span>
<span class="c1">// Starting at current_, send messages to subscriptions with credit:</span>
<span class="c1">// After each send try to find another subscription; Wrap around;</span>
<span class="c1">// Finish when we run out of messages or credit.</span>
<span class="kt">size_t</span> <span class="n">outOfCredit</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
<span class="k">while</span> <span class="p">(</span><span class="o">!</span><span class="n">messages_</span><span class="p">.</span><span class="n">empty</span><span class="p">()</span> <span class="o">&amp;&amp;</span> <span class="n">outOfCredit</span><span class="o">&lt;</span><span class="n">subscriptions_</span><span class="p">.</span><span class="n">size</span><span class="p">())</span> <span class="p">{</span>
<span class="c1">// If we got the end (or haven&#39;t started yet) start at the beginning</span>
<span class="k">if</span> <span class="p">(</span><span class="n">current_</span><span class="o">==</span><span class="n">subscriptions_</span><span class="p">.</span><span class="n">end</span><span class="p">())</span> <span class="p">{</span>
<span class="n">current_</span><span class="o">=</span><span class="n">subscriptions_</span><span class="p">.</span><span class="n">begin</span><span class="p">();</span>
<span class="p">}</span>
<span class="c1">// If we have credit send the message</span>
<span class="n">DOUT</span><span class="p">(</span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;(&quot;</span> <span class="o">&lt;&lt;</span> <span class="n">current_</span><span class="o">-&gt;</span><span class="n">second</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;) &quot;</span><span class="p">;);</span>
<span class="k">if</span> <span class="p">(</span><span class="n">current_</span><span class="o">-&gt;</span><span class="n">second</span><span class="o">&gt;</span><span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
<span class="n">DOUT</span><span class="p">(</span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="n">current_</span><span class="o">-&gt;</span><span class="n">first</span> <span class="o">&lt;&lt;</span> <span class="s">&quot; &quot;</span><span class="p">;);</span>
<span class="n">current_</span><span class="o">-&gt;</span><span class="n">first</span><span class="o">-&gt;</span><span class="n">add</span><span class="p">(</span><span class="n">make_work</span><span class="p">(</span><span class="o">&amp;</span><span class="n">Sender</span><span class="o">::</span><span class="n">sendMsg</span><span class="p">,</span> <span class="n">current_</span><span class="o">-&gt;</span><span class="n">first</span><span class="p">,</span> <span class="n">messages_</span><span class="p">.</span><span class="n">front</span><span class="p">()));</span>
<span class="n">messages_</span><span class="p">.</span><span class="n">pop_front</span><span class="p">();</span>
<span class="o">--</span><span class="n">current_</span><span class="o">-&gt;</span><span class="n">second</span><span class="p">;</span>
<span class="o">++</span><span class="n">current_</span><span class="p">;</span>
<span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
<span class="o">++</span><span class="n">outOfCredit</span><span class="p">;</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="n">DOUT</span><span class="p">(</span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">;);</span>
<span class="p">}</span>
<span class="k">public</span><span class="o">:</span>
<span class="n">Queue</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">container</span><span class="o">&amp;</span> <span class="n">c</span><span class="p">,</span> <span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span><span class="o">&amp;</span> <span class="n">n</span><span class="p">)</span> <span class="o">:</span>
<span class="n">work_queue_</span><span class="p">(</span><span class="n">c</span><span class="p">),</span> <span class="n">name_</span><span class="p">(</span><span class="n">n</span><span class="p">),</span> <span class="n">current_</span><span class="p">(</span><span class="n">subscriptions_</span><span class="p">.</span><span class="n">end</span><span class="p">())</span>
<span class="p">{}</span>
<span class="kt">bool</span> <span class="n">add</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">work</span> <span class="n">f</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="n">work_queue_</span><span class="p">.</span><span class="n">add</span><span class="p">(</span><span class="n">f</span><span class="p">);</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="n">queueMsg</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">message</span> <span class="n">m</span><span class="p">)</span> <span class="p">{</span>
<span class="n">DOUT</span><span class="p">(</span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;Queue: &quot;</span> <span class="o">&lt;&lt;</span> <span class="k">this</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;(&quot;</span> <span class="o">&lt;&lt;</span> <span class="n">name_</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;) queueMsg</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">;);</span>
<span class="n">messages_</span><span class="p">.</span><span class="n">push_back</span><span class="p">(</span><span class="n">m</span><span class="p">);</span>
<span class="n">tryToSend</span><span class="p">();</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="n">flow</span><span class="p">(</span><span class="n">Sender</span><span class="o">*</span> <span class="n">s</span><span class="p">,</span> <span class="kt">int</span> <span class="n">c</span><span class="p">)</span> <span class="p">{</span>
<span class="n">DOUT</span><span class="p">(</span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;Queue: &quot;</span> <span class="o">&lt;&lt;</span> <span class="k">this</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;(&quot;</span> <span class="o">&lt;&lt;</span> <span class="n">name_</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;) flow: &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">c</span> <span class="o">&lt;&lt;</span> <span class="s">&quot; to &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">s</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">;);</span>
<span class="n">subscriptions_</span><span class="p">[</span><span class="n">s</span><span class="p">]</span> <span class="o">=</span> <span class="n">c</span><span class="p">;</span>
<span class="n">tryToSend</span><span class="p">();</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="n">subscribe</span><span class="p">(</span><span class="n">Sender</span><span class="o">*</span> <span class="n">s</span><span class="p">)</span> <span class="p">{</span>
<span class="n">DOUT</span><span class="p">(</span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;Queue: &quot;</span> <span class="o">&lt;&lt;</span> <span class="k">this</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;(&quot;</span> <span class="o">&lt;&lt;</span> <span class="n">name_</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;) subscribe Sender: &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">s</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">;);</span>
<span class="n">subscriptions_</span><span class="p">[</span><span class="n">s</span><span class="p">]</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="n">unsubscribe</span><span class="p">(</span><span class="n">Sender</span><span class="o">*</span> <span class="n">s</span><span class="p">)</span> <span class="p">{</span>
<span class="n">DOUT</span><span class="p">(</span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;Queue: &quot;</span> <span class="o">&lt;&lt;</span> <span class="k">this</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;(&quot;</span> <span class="o">&lt;&lt;</span> <span class="n">name_</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;) unsubscribe Sender: &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">s</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">;);</span>
<span class="c1">// If we&#39;re about to erase the current subscription move on</span>
<span class="k">if</span> <span class="p">(</span><span class="n">current_</span> <span class="o">!=</span> <span class="n">subscriptions_</span><span class="p">.</span><span class="n">end</span><span class="p">()</span> <span class="o">&amp;&amp;</span> <span class="n">current_</span><span class="o">-&gt;</span><span class="n">first</span><span class="o">==</span><span class="n">s</span><span class="p">)</span> <span class="o">++</span><span class="n">current_</span><span class="p">;</span>
<span class="n">subscriptions_</span><span class="p">.</span><span class="n">erase</span><span class="p">(</span><span class="n">s</span><span class="p">);</span>
<span class="n">s</span><span class="o">-&gt;</span><span class="n">add</span><span class="p">(</span><span class="n">make_work</span><span class="p">(</span><span class="o">&amp;</span><span class="n">Sender</span><span class="o">::</span><span class="n">unsubscribed</span><span class="p">,</span> <span class="n">s</span><span class="p">));</span>
<span class="p">}</span>
<span class="p">};</span>
<span class="c1">// We have credit to send a message.</span>
<span class="kt">void</span> <span class="n">Sender</span><span class="o">::</span><span class="n">on_sendable</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">sender</span> <span class="o">&amp;</span><span class="n">sender</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="n">queue_</span><span class="p">)</span> <span class="p">{</span>
<span class="n">queue_</span><span class="o">-&gt;</span><span class="n">add</span><span class="p">(</span><span class="n">make_work</span><span class="p">(</span><span class="o">&amp;</span><span class="n">Queue</span><span class="o">::</span><span class="n">flow</span><span class="p">,</span> <span class="n">queue_</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="n">sender</span><span class="p">.</span><span class="n">credit</span><span class="p">()));</span>
<span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
<span class="n">pending_credit_</span> <span class="o">=</span> <span class="n">sender</span><span class="p">.</span><span class="n">credit</span><span class="p">();</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="n">Sender</span><span class="o">::</span><span class="n">on_sender_close</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">sender</span> <span class="o">&amp;</span><span class="n">sender</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="n">queue_</span><span class="p">)</span> <span class="p">{</span>
<span class="n">queue_</span><span class="o">-&gt;</span><span class="n">add</span><span class="p">(</span><span class="n">make_work</span><span class="p">(</span><span class="o">&amp;</span><span class="n">Queue</span><span class="o">::</span><span class="n">unsubscribe</span><span class="p">,</span> <span class="n">queue_</span><span class="p">,</span> <span class="k">this</span><span class="p">));</span>
<span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
<span class="c1">// TODO: Is it possible to be closed before we get the queue allocated?</span>
<span class="c1">// If so, we should have a way to mark the sender deleted, so we can delete</span>
<span class="c1">// on queue binding</span>
<span class="p">}</span>
<span class="n">senders_</span><span class="p">.</span><span class="n">erase</span><span class="p">(</span><span class="n">sender</span><span class="p">);</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="n">Sender</span><span class="o">::</span><span class="n">boundQueue</span><span class="p">(</span><span class="n">Queue</span><span class="o">*</span> <span class="n">q</span><span class="p">,</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">qn</span><span class="p">)</span> <span class="p">{</span>
<span class="n">DOUT</span><span class="p">(</span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;Sender: &quot;</span> <span class="o">&lt;&lt;</span> <span class="k">this</span> <span class="o">&lt;&lt;</span> <span class="s">&quot; bound to Queue: &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">q</span> <span class="o">&lt;&lt;</span><span class="s">&quot;(&quot;</span> <span class="o">&lt;&lt;</span> <span class="n">qn</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;)</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">;);</span>
<span class="n">queue_</span> <span class="o">=</span> <span class="n">q</span><span class="p">;</span>
<span class="n">queue_name_</span> <span class="o">=</span> <span class="n">qn</span><span class="p">;</span>
<span class="n">q</span><span class="o">-&gt;</span><span class="n">add</span><span class="p">(</span><span class="n">make_work</span><span class="p">(</span><span class="o">&amp;</span><span class="n">Queue</span><span class="o">::</span><span class="n">subscribe</span><span class="p">,</span> <span class="n">q</span><span class="p">,</span> <span class="k">this</span><span class="p">));</span>
<span class="n">sender_</span><span class="p">.</span><span class="n">open</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">sender_options</span><span class="p">()</span>
<span class="p">.</span><span class="n">source</span><span class="p">((</span><span class="n">proton</span><span class="o">::</span><span class="n">source_options</span><span class="p">().</span><span class="n">address</span><span class="p">(</span><span class="n">queue_name_</span><span class="p">)))</span>
<span class="p">.</span><span class="n">handler</span><span class="p">(</span><span class="o">*</span><span class="k">this</span><span class="p">));</span>
<span class="k">if</span> <span class="p">(</span><span class="n">pending_credit_</span><span class="o">&gt;</span><span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
<span class="n">queue_</span><span class="o">-&gt;</span><span class="n">add</span><span class="p">(</span><span class="n">make_work</span><span class="p">(</span><span class="o">&amp;</span><span class="n">Queue</span><span class="o">::</span><span class="n">flow</span><span class="p">,</span> <span class="n">queue_</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="n">pending_credit_</span><span class="p">));</span>
<span class="p">}</span>
<span class="n">std</span><span class="o">::</span><span class="n">cout</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;sending from &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">queue_name_</span> <span class="o">&lt;&lt;</span> <span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">class</span> <span class="nc">Receiver</span> <span class="o">:</span> <span class="k">public</span> <span class="n">proton</span><span class="o">::</span><span class="n">messaging_handler</span> <span class="p">{</span>
<span class="k">friend</span> <span class="k">class</span> <span class="nc">connection_handler</span><span class="p">;</span>
<span class="n">proton</span><span class="o">::</span><span class="n">receiver</span> <span class="n">receiver_</span><span class="p">;</span>
<span class="n">proton</span><span class="o">::</span><span class="n">work_queue</span><span class="o">&amp;</span> <span class="n">work_queue_</span><span class="p">;</span>
<span class="n">Queue</span><span class="o">*</span> <span class="n">queue_</span><span class="p">;</span>
<span class="n">std</span><span class="o">::</span><span class="n">deque</span><span class="o">&lt;</span><span class="n">proton</span><span class="o">::</span><span class="n">message</span><span class="o">&gt;</span> <span class="n">messages_</span><span class="p">;</span>
<span class="c1">// A message is received.</span>
<span class="kt">void</span> <span class="nf">on_message</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">delivery</span> <span class="o">&amp;</span><span class="p">,</span> <span class="n">proton</span><span class="o">::</span><span class="n">message</span> <span class="o">&amp;</span><span class="n">m</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
<span class="n">messages_</span><span class="p">.</span><span class="n">push_back</span><span class="p">(</span><span class="n">m</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="n">queue_</span><span class="p">)</span> <span class="p">{</span>
<span class="n">queueMsgs</span><span class="p">();</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="nf">queueMsgs</span><span class="p">()</span> <span class="p">{</span>
<span class="n">DOUT</span><span class="p">(</span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;Receiver: &quot;</span> <span class="o">&lt;&lt;</span> <span class="k">this</span> <span class="o">&lt;&lt;</span> <span class="s">&quot; queueing &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">messages_</span><span class="p">.</span><span class="n">size</span><span class="p">()</span> <span class="o">&lt;&lt;</span> <span class="s">&quot; msgs to: &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">queue_</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">;);</span>
<span class="k">while</span> <span class="p">(</span><span class="o">!</span><span class="n">messages_</span><span class="p">.</span><span class="n">empty</span><span class="p">())</span> <span class="p">{</span>
<span class="n">queue_</span><span class="o">-&gt;</span><span class="n">add</span><span class="p">(</span><span class="n">make_work</span><span class="p">(</span><span class="o">&amp;</span><span class="n">Queue</span><span class="o">::</span><span class="n">queueMsg</span><span class="p">,</span> <span class="n">queue_</span><span class="p">,</span> <span class="n">messages_</span><span class="p">.</span><span class="n">front</span><span class="p">()));</span>
<span class="n">messages_</span><span class="p">.</span><span class="n">pop_front</span><span class="p">();</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="k">public</span><span class="o">:</span>
<span class="n">Receiver</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">receiver</span> <span class="n">r</span><span class="p">)</span> <span class="o">:</span>
<span class="n">receiver_</span><span class="p">(</span><span class="n">r</span><span class="p">),</span> <span class="n">work_queue_</span><span class="p">(</span><span class="n">r</span><span class="p">.</span><span class="n">work_queue</span><span class="p">()),</span> <span class="n">queue_</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
<span class="p">{}</span>
<span class="kt">bool</span> <span class="n">add</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">work</span> <span class="n">f</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="n">work_queue_</span><span class="p">.</span><span class="n">add</span><span class="p">(</span><span class="n">f</span><span class="p">);</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="n">boundQueue</span><span class="p">(</span><span class="n">Queue</span><span class="o">*</span> <span class="n">q</span><span class="p">,</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">qn</span><span class="p">)</span> <span class="p">{</span>
<span class="n">DOUT</span><span class="p">(</span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;Receiver: &quot;</span> <span class="o">&lt;&lt;</span> <span class="k">this</span> <span class="o">&lt;&lt;</span> <span class="s">&quot; bound to Queue: &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">q</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;(&quot;</span> <span class="o">&lt;&lt;</span> <span class="n">qn</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;)</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">;);</span>
<span class="n">queue_</span> <span class="o">=</span> <span class="n">q</span><span class="p">;</span>
<span class="n">receiver_</span><span class="p">.</span><span class="n">open</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">receiver_options</span><span class="p">()</span>
<span class="p">.</span><span class="n">source</span><span class="p">((</span><span class="n">proton</span><span class="o">::</span><span class="n">source_options</span><span class="p">().</span><span class="n">address</span><span class="p">(</span><span class="n">qn</span><span class="p">)))</span>
<span class="p">.</span><span class="n">handler</span><span class="p">(</span><span class="o">*</span><span class="k">this</span><span class="p">));</span>
<span class="n">std</span><span class="o">::</span><span class="n">cout</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;receiving to &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">qn</span> <span class="o">&lt;&lt;</span> <span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span>
<span class="n">queueMsgs</span><span class="p">();</span>
<span class="p">}</span>
<span class="p">};</span>
<span class="k">class</span> <span class="nc">QueueManager</span> <span class="p">{</span>
<span class="n">proton</span><span class="o">::</span><span class="n">container</span><span class="o">&amp;</span> <span class="n">container_</span><span class="p">;</span>
<span class="n">proton</span><span class="o">::</span><span class="n">work_queue</span> <span class="n">work_queue_</span><span class="p">;</span>
<span class="k">typedef</span> <span class="n">std</span><span class="o">::</span><span class="n">map</span><span class="o">&lt;</span><span class="n">std</span><span class="o">::</span><span class="n">string</span><span class="p">,</span> <span class="n">Queue</span><span class="o">*&gt;</span> <span class="n">queues</span><span class="p">;</span>
<span class="n">queues</span> <span class="n">queues_</span><span class="p">;</span>
<span class="kt">int</span> <span class="n">next_id_</span><span class="p">;</span> <span class="c1">// Use to generate unique queue IDs.</span>
<span class="k">public</span><span class="o">:</span>
<span class="n">QueueManager</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">container</span><span class="o">&amp;</span> <span class="n">c</span><span class="p">)</span> <span class="o">:</span>
<span class="n">container_</span><span class="p">(</span><span class="n">c</span><span class="p">),</span> <span class="n">work_queue_</span><span class="p">(</span><span class="n">c</span><span class="p">),</span> <span class="n">next_id_</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
<span class="p">{}</span>
<span class="kt">bool</span> <span class="n">add</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">work</span> <span class="n">f</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="n">work_queue_</span><span class="p">.</span><span class="n">add</span><span class="p">(</span><span class="n">f</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">template</span> <span class="o">&lt;</span><span class="k">class</span> <span class="nc">T</span><span class="o">&gt;</span>
<span class="kt">void</span> <span class="n">findQueue</span><span class="p">(</span><span class="n">T</span><span class="o">&amp;</span> <span class="n">connection</span><span class="p">,</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span><span class="o">&amp;</span> <span class="n">qn</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="n">qn</span><span class="p">.</span><span class="n">empty</span><span class="p">())</span> <span class="p">{</span>
<span class="c1">// Dynamic queue creation</span>
<span class="n">std</span><span class="o">::</span><span class="n">ostringstream</span> <span class="n">os</span><span class="p">;</span>
<span class="n">os</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;_dynamic_&quot;</span> <span class="o">&lt;&lt;</span> <span class="n">next_id_</span><span class="o">++</span><span class="p">;</span>
<span class="n">qn</span> <span class="o">=</span> <span class="n">os</span><span class="p">.</span><span class="n">str</span><span class="p">();</span>
<span class="p">}</span>
<span class="n">Queue</span><span class="o">*</span> <span class="n">q</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
<span class="n">queues</span><span class="o">::</span><span class="n">iterator</span> <span class="n">i</span> <span class="o">=</span> <span class="n">queues_</span><span class="p">.</span><span class="n">find</span><span class="p">(</span><span class="n">qn</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="n">i</span><span class="o">==</span><span class="n">queues_</span><span class="p">.</span><span class="n">end</span><span class="p">())</span> <span class="p">{</span>
<span class="n">q</span> <span class="o">=</span> <span class="k">new</span> <span class="n">Queue</span><span class="p">(</span><span class="n">container_</span><span class="p">,</span> <span class="n">qn</span><span class="p">);</span>
<span class="n">queues_</span><span class="p">[</span><span class="n">qn</span><span class="p">]</span> <span class="o">=</span> <span class="n">q</span><span class="p">;</span>
<span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
<span class="n">q</span> <span class="o">=</span> <span class="n">i</span><span class="o">-&gt;</span><span class="n">second</span><span class="p">;</span>
<span class="p">}</span>
<span class="n">connection</span><span class="p">.</span><span class="n">add</span><span class="p">(</span><span class="n">make_work</span><span class="p">(</span><span class="o">&amp;</span><span class="n">T</span><span class="o">::</span><span class="n">boundQueue</span><span class="p">,</span> <span class="o">&amp;</span><span class="n">connection</span><span class="p">,</span> <span class="n">q</span><span class="p">,</span> <span class="n">qn</span><span class="p">));</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="n">findQueueSender</span><span class="p">(</span><span class="n">Sender</span><span class="o">*</span> <span class="n">s</span><span class="p">,</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">qn</span><span class="p">)</span> <span class="p">{</span>
<span class="n">findQueue</span><span class="p">(</span><span class="o">*</span><span class="n">s</span><span class="p">,</span> <span class="n">qn</span><span class="p">);</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="n">findQueueReceiver</span><span class="p">(</span><span class="n">Receiver</span><span class="o">*</span> <span class="n">r</span><span class="p">,</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">qn</span><span class="p">)</span> <span class="p">{</span>
<span class="n">findQueue</span><span class="p">(</span><span class="o">*</span><span class="n">r</span><span class="p">,</span> <span class="n">qn</span><span class="p">);</span>
<span class="p">}</span>
<span class="p">};</span>
<span class="k">class</span> <span class="nc">connection_handler</span> <span class="o">:</span> <span class="k">public</span> <span class="n">proton</span><span class="o">::</span><span class="n">messaging_handler</span> <span class="p">{</span>
<span class="n">QueueManager</span><span class="o">&amp;</span> <span class="n">queue_manager_</span><span class="p">;</span>
<span class="n">senders</span> <span class="n">senders_</span><span class="p">;</span>
<span class="k">public</span><span class="o">:</span>
<span class="n">connection_handler</span><span class="p">(</span><span class="n">QueueManager</span><span class="o">&amp;</span> <span class="n">qm</span><span class="p">)</span> <span class="o">:</span>
<span class="n">queue_manager_</span><span class="p">(</span><span class="n">qm</span><span class="p">)</span>
<span class="p">{}</span>
<span class="kt">void</span> <span class="n">on_connection_open</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">connection</span><span class="o">&amp;</span> <span class="n">c</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
<span class="n">c</span><span class="p">.</span><span class="n">open</span><span class="p">();</span> <span class="c1">// Accept the connection</span>
<span class="p">}</span>
<span class="c1">// A sender sends messages from a queue to a subscriber.</span>
<span class="kt">void</span> <span class="n">on_sender_open</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">sender</span> <span class="o">&amp;</span><span class="n">sender</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
<span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">qn</span> <span class="o">=</span> <span class="n">sender</span><span class="p">.</span><span class="n">source</span><span class="p">().</span><span class="n">dynamic</span><span class="p">()</span> <span class="o">?</span> <span class="s">&quot;&quot;</span> <span class="o">:</span> <span class="n">sender</span><span class="p">.</span><span class="n">source</span><span class="p">().</span><span class="n">address</span><span class="p">();</span>
<span class="n">Sender</span><span class="o">*</span> <span class="n">s</span> <span class="o">=</span> <span class="k">new</span> <span class="n">Sender</span><span class="p">(</span><span class="n">sender</span><span class="p">,</span> <span class="n">senders_</span><span class="p">);</span>
<span class="n">senders_</span><span class="p">[</span><span class="n">sender</span><span class="p">]</span> <span class="o">=</span> <span class="n">s</span><span class="p">;</span>
<span class="n">queue_manager_</span><span class="p">.</span><span class="n">add</span><span class="p">(</span><span class="n">make_work</span><span class="p">(</span><span class="o">&amp;</span><span class="n">QueueManager</span><span class="o">::</span><span class="n">findQueueSender</span><span class="p">,</span> <span class="o">&amp;</span><span class="n">queue_manager_</span><span class="p">,</span> <span class="n">s</span><span class="p">,</span> <span class="n">qn</span><span class="p">));</span>
<span class="p">}</span>
<span class="c1">// A receiver receives messages from a publisher to a queue.</span>
<span class="kt">void</span> <span class="n">on_receiver_open</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">receiver</span> <span class="o">&amp;</span><span class="n">receiver</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
<span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">qname</span> <span class="o">=</span> <span class="n">receiver</span><span class="p">.</span><span class="n">target</span><span class="p">().</span><span class="n">address</span><span class="p">();</span>
<span class="k">if</span> <span class="p">(</span><span class="n">qname</span> <span class="o">==</span> <span class="s">&quot;shutdown&quot;</span><span class="p">)</span> <span class="p">{</span>
<span class="n">std</span><span class="o">::</span><span class="n">cout</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;broker shutting down&quot;</span> <span class="o">&lt;&lt;</span> <span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span>
<span class="c1">// Sending to the special &quot;shutdown&quot; queue stops the broker.</span>
<span class="n">receiver</span><span class="p">.</span><span class="n">connection</span><span class="p">().</span><span class="n">container</span><span class="p">().</span><span class="n">stop</span><span class="p">(</span>
<span class="n">proton</span><span class="o">::</span><span class="n">error_condition</span><span class="p">(</span><span class="s">&quot;shutdown&quot;</span><span class="p">,</span> <span class="s">&quot;stop broker&quot;</span><span class="p">));</span>
<span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
<span class="k">if</span> <span class="p">(</span><span class="n">qname</span><span class="p">.</span><span class="n">empty</span><span class="p">())</span> <span class="p">{</span>
<span class="n">DOUT</span><span class="p">(</span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;ODD - trying to attach to a empty address</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">;);</span>
<span class="p">}</span>
<span class="n">Receiver</span><span class="o">*</span> <span class="n">r</span> <span class="o">=</span> <span class="k">new</span> <span class="n">Receiver</span><span class="p">(</span><span class="n">receiver</span><span class="p">);</span>
<span class="n">queue_manager_</span><span class="p">.</span><span class="n">add</span><span class="p">(</span><span class="n">make_work</span><span class="p">(</span><span class="o">&amp;</span><span class="n">QueueManager</span><span class="o">::</span><span class="n">findQueueReceiver</span><span class="p">,</span> <span class="o">&amp;</span><span class="n">queue_manager_</span><span class="p">,</span> <span class="n">r</span><span class="p">,</span> <span class="n">qname</span><span class="p">));</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="n">on_session_close</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">session</span> <span class="o">&amp;</span><span class="n">session</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
<span class="c1">// Unsubscribe all senders that belong to session.</span>
<span class="k">for</span> <span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">sender_iterator</span> <span class="n">i</span> <span class="o">=</span> <span class="n">session</span><span class="p">.</span><span class="n">senders</span><span class="p">().</span><span class="n">begin</span><span class="p">();</span> <span class="n">i</span> <span class="o">!=</span> <span class="n">session</span><span class="p">.</span><span class="n">senders</span><span class="p">().</span><span class="n">end</span><span class="p">();</span> <span class="o">++</span><span class="n">i</span><span class="p">)</span> <span class="p">{</span>
<span class="n">senders</span><span class="o">::</span><span class="n">iterator</span> <span class="n">j</span> <span class="o">=</span> <span class="n">senders_</span><span class="p">.</span><span class="n">find</span><span class="p">(</span><span class="o">*</span><span class="n">i</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="n">j</span> <span class="o">==</span> <span class="n">senders_</span><span class="p">.</span><span class="n">end</span><span class="p">())</span> <span class="k">continue</span><span class="p">;</span>
<span class="n">Sender</span><span class="o">*</span> <span class="n">s</span> <span class="o">=</span> <span class="n">j</span><span class="o">-&gt;</span><span class="n">second</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="n">s</span><span class="o">-&gt;</span><span class="n">queue_</span><span class="p">)</span> <span class="p">{</span>
<span class="n">s</span><span class="o">-&gt;</span><span class="n">queue_</span><span class="o">-&gt;</span><span class="n">add</span><span class="p">(</span><span class="n">make_work</span><span class="p">(</span><span class="o">&amp;</span><span class="n">Queue</span><span class="o">::</span><span class="n">unsubscribe</span><span class="p">,</span> <span class="n">s</span><span class="o">-&gt;</span><span class="n">queue_</span><span class="p">,</span> <span class="n">s</span><span class="p">));</span>
<span class="p">}</span>
<span class="n">senders_</span><span class="p">.</span><span class="n">erase</span><span class="p">(</span><span class="n">j</span><span class="p">);</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="n">on_error</span><span class="p">(</span><span class="k">const</span> <span class="n">proton</span><span class="o">::</span><span class="n">error_condition</span><span class="o">&amp;</span> <span class="n">e</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
<span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;error: &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">e</span><span class="p">.</span><span class="n">what</span><span class="p">()</span> <span class="o">&lt;&lt;</span> <span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span>
<span class="p">}</span>
<span class="c1">// The container calls on_transport_close() last.</span>
<span class="kt">void</span> <span class="n">on_transport_close</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">transport</span><span class="o">&amp;</span> <span class="n">t</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
<span class="c1">// Unsubscribe all senders.</span>
<span class="k">for</span> <span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">sender_iterator</span> <span class="n">i</span> <span class="o">=</span> <span class="n">t</span><span class="p">.</span><span class="n">connection</span><span class="p">().</span><span class="n">senders</span><span class="p">().</span><span class="n">begin</span><span class="p">();</span> <span class="n">i</span> <span class="o">!=</span> <span class="n">t</span><span class="p">.</span><span class="n">connection</span><span class="p">().</span><span class="n">senders</span><span class="p">().</span><span class="n">end</span><span class="p">();</span> <span class="o">++</span><span class="n">i</span><span class="p">)</span> <span class="p">{</span>
<span class="n">senders</span><span class="o">::</span><span class="n">iterator</span> <span class="n">j</span> <span class="o">=</span> <span class="n">senders_</span><span class="p">.</span><span class="n">find</span><span class="p">(</span><span class="o">*</span><span class="n">i</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="n">j</span> <span class="o">==</span> <span class="n">senders_</span><span class="p">.</span><span class="n">end</span><span class="p">())</span> <span class="k">continue</span><span class="p">;</span>
<span class="n">Sender</span><span class="o">*</span> <span class="n">s</span> <span class="o">=</span> <span class="n">j</span><span class="o">-&gt;</span><span class="n">second</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="n">s</span><span class="o">-&gt;</span><span class="n">queue_</span><span class="p">)</span> <span class="p">{</span>
<span class="n">s</span><span class="o">-&gt;</span><span class="n">queue_</span><span class="o">-&gt;</span><span class="n">add</span><span class="p">(</span><span class="n">make_work</span><span class="p">(</span><span class="o">&amp;</span><span class="n">Queue</span><span class="o">::</span><span class="n">unsubscribe</span><span class="p">,</span> <span class="n">s</span><span class="o">-&gt;</span><span class="n">queue_</span><span class="p">,</span> <span class="n">s</span><span class="p">));</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="k">delete</span> <span class="k">this</span><span class="p">;</span> <span class="c1">// All done.</span>
<span class="p">}</span>
<span class="p">};</span>
<span class="k">class</span> <span class="nc">broker</span> <span class="p">{</span>
<span class="k">public</span><span class="o">:</span>
<span class="n">broker</span><span class="p">(</span><span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">addr</span><span class="p">)</span> <span class="o">:</span>
<span class="n">container_</span><span class="p">(</span><span class="s">&quot;broker&quot;</span><span class="p">),</span> <span class="n">queues_</span><span class="p">(</span><span class="n">container_</span><span class="p">),</span> <span class="n">listener_</span><span class="p">(</span><span class="n">queues_</span><span class="p">)</span>
<span class="p">{</span>
<span class="n">container_</span><span class="p">.</span><span class="n">listen</span><span class="p">(</span><span class="n">addr</span><span class="p">,</span> <span class="n">listener_</span><span class="p">);</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="n">run</span><span class="p">()</span> <span class="p">{</span>
<span class="cp">#if PN_CPP_HAS_STD_THREAD</span>
<span class="n">container_</span><span class="p">.</span><span class="n">run</span><span class="p">(</span><span class="n">std</span><span class="o">::</span><span class="kr">thread</span><span class="o">::</span><span class="n">hardware_concurrency</span><span class="p">());</span>
<span class="cp">#else</span>
<span class="n">container_</span><span class="p">.</span><span class="n">run</span><span class="p">();</span>
<span class="cp">#endif</span>
<span class="p">}</span>
<span class="k">private</span><span class="o">:</span>
<span class="k">struct</span> <span class="nl">listener</span> <span class="p">:</span> <span class="k">public</span> <span class="n">proton</span><span class="o">::</span><span class="n">listen_handler</span> <span class="p">{</span>
<span class="n">listener</span><span class="p">(</span><span class="n">QueueManager</span><span class="o">&amp;</span> <span class="n">c</span><span class="p">)</span> <span class="o">:</span> <span class="n">queues_</span><span class="p">(</span><span class="n">c</span><span class="p">)</span> <span class="p">{}</span>
<span class="n">proton</span><span class="o">::</span><span class="n">connection_options</span> <span class="n">on_accept</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">listener</span><span class="o">&amp;</span><span class="p">)</span> <span class="n">OVERRIDE</span><span class="p">{</span>
<span class="k">return</span> <span class="n">proton</span><span class="o">::</span><span class="n">connection_options</span><span class="p">().</span><span class="n">handler</span><span class="p">(</span><span class="o">*</span><span class="p">(</span><span class="k">new</span> <span class="n">connection_handler</span><span class="p">(</span><span class="n">queues_</span><span class="p">)));</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="n">on_open</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">listener</span><span class="o">&amp;</span> <span class="n">l</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
<span class="n">std</span><span class="o">::</span><span class="n">cout</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;broker listening on &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">l</span><span class="p">.</span><span class="n">port</span><span class="p">()</span> <span class="o">&lt;&lt;</span> <span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="n">on_error</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">listener</span><span class="o">&amp;</span><span class="p">,</span> <span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span><span class="o">&amp;</span> <span class="n">s</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
<span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;listen error: &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">s</span> <span class="o">&lt;&lt;</span> <span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span>
<span class="k">throw</span> <span class="n">std</span><span class="o">::</span><span class="n">runtime_error</span><span class="p">(</span><span class="n">s</span><span class="p">);</span>
<span class="p">}</span>
<span class="n">QueueManager</span><span class="o">&amp;</span> <span class="n">queues_</span><span class="p">;</span>
<span class="p">};</span>
<span class="n">proton</span><span class="o">::</span><span class="n">container</span> <span class="n">container_</span><span class="p">;</span>
<span class="n">QueueManager</span> <span class="n">queues_</span><span class="p">;</span>
<span class="n">listener</span> <span class="n">listener_</span><span class="p">;</span>
<span class="p">};</span>
<span class="kt">int</span> <span class="nf">main</span><span class="p">(</span><span class="kt">int</span> <span class="n">argc</span><span class="p">,</span> <span class="kt">char</span> <span class="o">**</span><span class="n">argv</span><span class="p">)</span> <span class="p">{</span>
<span class="c1">// Command line options</span>
<span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">address</span><span class="p">(</span><span class="s">&quot;0.0.0.0&quot;</span><span class="p">);</span>
<span class="n">example</span><span class="o">::</span><span class="n">options</span> <span class="n">opts</span><span class="p">(</span><span class="n">argc</span><span class="p">,</span> <span class="n">argv</span><span class="p">);</span>
<span class="n">opts</span><span class="p">.</span><span class="n">add_flag</span><span class="p">(</span><span class="n">verbose</span><span class="p">,</span> <span class="sc">&#39;v&#39;</span><span class="p">,</span> <span class="s">&quot;verbose&quot;</span><span class="p">,</span> <span class="s">&quot;verbose (debugging) output&quot;</span><span class="p">);</span>
<span class="n">opts</span><span class="p">.</span><span class="n">add_value</span><span class="p">(</span><span class="n">address</span><span class="p">,</span> <span class="sc">&#39;a&#39;</span><span class="p">,</span> <span class="s">&quot;address&quot;</span><span class="p">,</span> <span class="s">&quot;listen on URL&quot;</span><span class="p">,</span> <span class="s">&quot;URL&quot;</span><span class="p">);</span>
<span class="k">try</span> <span class="p">{</span>
<span class="n">verbose</span> <span class="o">=</span> <span class="nb">false</span><span class="p">;</span>
<span class="n">opts</span><span class="p">.</span><span class="n">parse</span><span class="p">();</span>
<span class="n">broker</span><span class="p">(</span><span class="n">address</span><span class="p">).</span><span class="n">run</span><span class="p">();</span>
<span class="k">return</span> <span class="mi">0</span><span class="p">;</span>
<span class="p">}</span> <span class="k">catch</span> <span class="p">(</span><span class="k">const</span> <span class="n">example</span><span class="o">::</span><span class="n">bad_option</span><span class="o">&amp;</span> <span class="n">e</span><span class="p">)</span> <span class="p">{</span>
<span class="n">std</span><span class="o">::</span><span class="n">cout</span> <span class="o">&lt;&lt;</span> <span class="n">opts</span> <span class="o">&lt;&lt;</span> <span class="n">std</span><span class="o">::</span><span class="n">endl</span> <span class="o">&lt;&lt;</span> <span class="n">e</span><span class="p">.</span><span class="n">what</span><span class="p">()</span> <span class="o">&lt;&lt;</span> <span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span>
<span class="p">}</span> <span class="k">catch</span> <span class="p">(</span><span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">exception</span><span class="o">&amp;</span> <span class="n">e</span><span class="p">)</span> <span class="p">{</span>
<span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;broker shutdown: &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">e</span><span class="p">.</span><span class="n">what</span><span class="p">()</span> <span class="o">&lt;&lt;</span> <span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">return</span> <span class="mi">1</span><span class="p">;</span>
<span class="p">}</span>
</pre></div>
<p><a href="broker.cpp">Download this file</a></p>
<hr/>
<ul id="-apache-navigation">
<li><a href="http://www.apache.org/">Apache</a></li>
<li><a href="http://www.apache.org/licenses/">License</a></li>
<li><a href="http://www.apache.org/foundation/sponsorship.html">Sponsorship</a></li>
<li><a href="http://www.apache.org/foundation/thanks.html">Thanks!</a></li>
<li><a href="/security.html">Security</a></li>
<li><a href="http://www.apache.org/"><img id="-apache-feather" width="48" height="14" src="" alt="Apache"/></a></li>
</ul>
<p id="-legal">
Apache Qpid, Messaging built on AMQP; Copyright &#169; 2015
The Apache Software Foundation; Licensed under
the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache
License, Version 2.0</a>; Apache Qpid, Qpid, Qpid Proton,
Proton, Apache, the Apache feather logo, and the Apache Qpid
project logo are trademarks of The Apache Software
Foundation; All other marks mentioned may be trademarks or
registered trademarks of their respective owners
</p>
</div>
</div>
</div>
</body>
</html>