amqp-dsl
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Amqp-DSL - Fluent interface for node-amqp
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<html> <head> <title>example-simple.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To … <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="example-advanced.html"> example-advanced.coffee </a> <a class="source" href="example-connection.html"> example-connection.coffee </a> <a class="source" href="example-simple.html"> example-simple.coffee </a> <a class="source" href="AmqpDsl.html"> AmqpDsl.coffee </a> <a class="source" href="AmqpExchange.html"> AmqpExchange.coffee </a> <a class="source" href="AmqpQueue.html"> AmqpQueue.coffee </a> <a class="source" href="IndexedList.html"> IndexedList.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> example-simple.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-1">¶</a> </div> </td> <td class="code"> <div class="highlight"><pre><span class="nv">AmqpDsl = </span><span class="nx">require</span> <span class="s1">'amqp-dsl'</span>
<span class="nx">AmqpDsl</span></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-2">¶</a> </div> <p>First we log in, here the list of the available parameters and their default value</p>
<pre><code>{
login: 'guest'
password: 'guest'
host:'localhost'
port: 5672
vhost: '/'
}
</code></pre> </td> <td class="code"> <div class="highlight"><pre> <span class="p">.</span><span class="nx">login</span><span class="p">(</span>
<span class="nv">login: </span><span class="s1">'legen'</span>
<span class="nv">password: </span><span class="s1">'dary'</span>
<span class="p">)</span>
</pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-3">¶</a> </div> <p>Bind listeners to some events (available events are <code>close</code>, <code>error</code> and <code>ready</code>)</p> </td> <td class="code"> <div class="highlight"><pre> <span class="p">.</span><span class="kc">on</span><span class="p">(</span><span class="s1">'close'</span><span class="p">,</span> <span class="nf">() -></span> <span class="nx">console</span><span class="p">.</span><span class="nx">error</span> <span class="s2">"RabbitMQ connection closed"</span><span class="p">)</span>
<span class="p">.</span><span class="kc">on</span><span class="p">(</span><span class="s1">'error'</span><span class="p">,</span> <span class="nf">(err) -></span> <span class="nx">console</span><span class="p">.</span><span class="nx">error</span> <span class="s2">"RabbitMQ error"</span><span class="p">,</span> <span class="nx">err</span><span class="p">)</span>
<span class="p">.</span><span class="kc">on</span><span class="p">(</span><span class="s1">'ready'</span><span class="p">,</span> <span class="nf">() -></span> <span class="nx">console</span><span class="p">.</span><span class="nx">log</span> <span class="s2">"Connected to RabbitMQ"</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-4">¶</a> </div> <p>We create a queue (<code>passive: false</code> see AMQP doc) with <code>.queue</code></p>
<ul>
<li><code>.queue( name, options )</code></li>
<li><code>.queue( name, callback(queue) )</code></li>
<li><code>.queue( name, options, callback(queue) )</code></li>
</ul> </td> <td class="code"> <div class="highlight"><pre> <span class="p">.</span><span class="nx">queue</span><span class="p">(</span><span class="s1">'testQueue'</span><span class="p">,</span> <span class="nf">(queue) -></span> <span class="nx">console</span><span class="p">.</span><span class="nx">log</span> <span class="s2">"Connected to Queue"</span><span class="p">,</span> <span class="nx">queue</span><span class="p">.</span><span class="nx">name</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-5">¶</a> </div> <p>(optional) ... and bind that queue to an exchange with <code>.bind</code></p>
<ul>
<li><code>.bind( name, routingKey )</code></li>
</ul> </td> <td class="code"> <div class="highlight"><pre> <span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="s1">'stream'</span><span class="p">,</span> <span class="s1">'#'</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-6">¶</a> </div> <p>(optional) ... and subscribe for messages (without <code>ack</code> in this example)</p>
<ul>
<li><code>.subscribe( callback(message, header, deliveryInfo) )</code></li>
<li><code>.subscribe( options, callback(message, header, deliveryInfo) )</code></li>
</ul> </td> <td class="code"> <div class="highlight"><pre> <span class="p">.</span><span class="nx">subscribe</span><span class="p">(</span><span class="nf">(message, header, deliveryInfo) -></span> <span class="p">)</span>
</pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-7">¶</a> </div> <p>Create another queue <code>queue2</code> that will be binded to <code>search</code> exchange with the routing key <code>#.ok</code></p> </td> <td class="code"> <div class="highlight"><pre> <span class="p">.</span><span class="nx">queue</span><span class="p">(</span><span class="s1">'queue2'</span><span class="p">)</span>
<span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="s1">'search'</span><span class="p">,</span> <span class="s1">'#.ok'</span><span class="p">)</span>
</pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-8">¶</a> </div> <p>Connect to an existing queue <code>queue3</code></p> </td> <td class="code"> <div class="highlight"><pre> <span class="p">.</span><span class="nx">queue</span><span class="p">(</span><span class="s1">'queue3'</span><span class="p">,</span> <span class="nx">passive</span><span class="o">:</span><span class="kc">true</span><span class="p">,</span> <span class="nf">(queue)-></span> <span class="nx">console</span><span class="p">.</span><span class="nx">log</span> <span class="s2">"Connected to Queue"</span><span class="p">,</span> <span class="nx">queue</span><span class="p">.</span><span class="nx">name</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-9">¶</a> </div> <p>And now it's time to connect !
<code>amqp</code> contains:</p>
<ul>
<li><code>amqp.connections</code> == <code>[node-amqp::Connection]</code></li>
<li><code>amqp.queues</code> == <code>{}</code></li>
<li><code>amqp.exchanges</code> == <code>{}</code></li>
</ul> </td> <td class="code"> <div class="highlight"><pre> <span class="p">.</span><span class="nx">connect</span><span class="p">(</span><span class="nf">(err, amqp) -></span>
<span class="k">if</span> <span class="nx">err</span>
<span class="k">throw</span> <span class="nx">err</span>
<span class="k">return</span>
<span class="nx">console</span><span class="p">.</span><span class="nx">log</span> <span class="s1">'We are connected !'</span></pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-10">¶</a> </div> <p>Do other stuff with <code>amqp</code> like subscribing to a queue</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">queue3 = </span><span class="nx">amqp</span><span class="p">.</span><span class="nx">queues</span><span class="p">.</span><span class="nx">queue3</span>
<span class="nx">queue3</span><span class="p">.</span><span class="nx">subscribe</span><span class="p">(</span><span class="nx">ack</span><span class="o">:</span><span class="kc">true</span><span class="p">,</span> <span class="nf">(message) -></span>
<span class="nx">console</span><span class="p">.</span><span class="nx">log</span> <span class="s2">"Hey ! We got one new message !"</span>
<span class="nx">queue3</span><span class="p">.</span><span class="nx">shift</span><span class="p">()</span>
<span class="p">)</span>
<span class="p">)</span>
</pre></div> </td> </tr> </tbody> </table> </div> </body> </html>