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<div class="section" id="queues-v1">
<h1>Queues v1<a class="headerlink" href="#queues-v1" title="Permalink to this headline">¶</a></h1>
<div class="section" id="setup">
<h2>Setup<a class="headerlink" href="#setup" title="Permalink to this headline">¶</a></h2>
<div class="section" id="rackspace-setup">
<h3>Rackspace setup<a class="headerlink" href="#rackspace-setup" title="Permalink to this headline">¶</a></h3>
<p>The first step is to pass in your credentials and set up a client. For
Rackspace users, you will need your username and API key:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="k">use</span> <span class="nx">OpenCloud\Rackspace</span><span class="p">;</span>
<span class="nv">$client</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">Rackspace</span><span class="p">(</span><span class="nx">Rackspace</span><span class="o">::</span><span class="na">US_IDENTITY_ENDPOINT</span><span class="p">,</span> <span class="k">array</span><span class="p">(</span>
<span class="s1">'username'</span> <span class="o">=></span> <span class="s1">'{username}'</span><span class="p">,</span>
<span class="s1">'apiKey'</span> <span class="o">=></span> <span class="s1">'{apiKey}'</span><span class="p">,</span>
<span class="p">));</span>
</pre></div>
</div>
</div>
<div class="section" id="openstack-setup">
<h3>OpenStack setup<a class="headerlink" href="#openstack-setup" title="Permalink to this headline">¶</a></h3>
<p>If you’re an OpenStack user, you will also need to prove a few other
configuration parameters:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="nv">$client</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">OpenCloud\OpenStack</span><span class="p">(</span><span class="s1">'{keystoneUrl}'</span><span class="p">,</span> <span class="k">array</span><span class="p">(</span>
<span class="s1">'username'</span> <span class="o">=></span> <span class="s1">'{username}'</span><span class="p">,</span>
<span class="s1">'password'</span> <span class="o">=></span> <span class="s1">'{apiKey}'</span><span class="p">,</span>
<span class="s1">'tenantId'</span> <span class="o">=></span> <span class="s1">'{tenantId}'</span><span class="p">,</span>
<span class="p">));</span>
</pre></div>
</div>
</div>
<div class="section" id="queues-service">
<h3>Queues service<a class="headerlink" href="#queues-service" title="Permalink to this headline">¶</a></h3>
<p>Now to instantiate the Queues service:</p>
<div class="highlight-php"><div class="highlight"><pre><span class="nv">$service</span> <span class="o">=</span> <span class="nv">$client</span><span class="o">-></span><span class="na">queuesService</span><span class="p">(</span><span class="s1">'{catalogName}'</span><span class="p">,</span> <span class="s1">'{region}'</span><span class="p">,</span> <span class="s1">'{urlType}'</span><span class="p">);</span>
</pre></div>
</div>
<ul class="simple">
<li><tt class="docutils literal"><span class="pre">{catalogName}</span></tt> is the name of the service as it appears in the service
catalog. OpenStack users <em>must</em> set this value. For Rackspace users, a
default will be provided if you pass in <tt class="docutils literal"><span class="pre">null</span></tt>.</li>
<li><tt class="docutils literal"><span class="pre">{region}</span></tt> is the region the service will operate in. For Rackspace
users, you can select one of the following from the <a class="reference external" href="/regions">supported regions page</a>.</li>
<li><tt class="docutils literal"><span class="pre">{urlType}</span></tt> is the <a class="reference external" href="/url-types">type of URL</a> to use, depending on which
endpoints your catalog provides. If omitted, it will default to the public
network.</li>
</ul>
</div>
</div>
<div class="section" id="operations">
<h2>Operations<a class="headerlink" href="#operations" title="Permalink to this headline">¶</a></h2>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="queues.html">Queues</a><ul>
<li class="toctree-l2"><a class="reference internal" href="queues.html#a-note-on-client-ids">A note on Client IDs</a></li>
<li class="toctree-l2"><a class="reference internal" href="queues.html#list-queues">List queues</a><ul>
<li class="toctree-l3"><a class="reference internal" href="queues.html#filtering-lists">Filtering lists</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="queues.html#create-queue">Create queue</a></li>
<li class="toctree-l2"><a class="reference internal" href="queues.html#find-queue-details">Find queue details</a></li>
<li class="toctree-l2"><a class="reference internal" href="queues.html#check-queue-existence">Check queue existence</a></li>
<li class="toctree-l2"><a class="reference internal" href="queues.html#update-queue-metadata">Update queue metadata</a></li>
<li class="toctree-l2"><a class="reference internal" href="queues.html#retrieve-the-queue-metadata">Retrieve the queue metadata</a></li>
<li class="toctree-l2"><a class="reference internal" href="queues.html#get-queue-stats">Get queue stats</a></li>
<li class="toctree-l2"><a class="reference internal" href="queues.html#delete-queue">Delete queue</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="messages.html">Messages</a><ul>
<li class="toctree-l2"><a class="reference internal" href="messages.html#setup">Setup</a></li>
<li class="toctree-l2"><a class="reference internal" href="messages.html#post-new-message">Post new message</a><ul>
<li class="toctree-l3"><a class="reference internal" href="messages.html#posting-a-single-message">Posting a single message</a></li>
<li class="toctree-l3"><a class="reference internal" href="messages.html#post-a-batch-of-messages">Post a batch of messages</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="messages.html#get-messages">Get messages</a><ul>
<li class="toctree-l3"><a class="reference internal" href="messages.html#parameters">Parameters</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="messages.html#get-a-set-of-messages-by-id">Get a set of messages by ID</a><ul>
<li class="toctree-l3"><a class="reference internal" href="messages.html#id1">Parameters</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="messages.html#delete-a-set-of-messages-by-id">Delete a set of messages by ID</a></li>
<li class="toctree-l2"><a class="reference internal" href="messages.html#get-a-specific-message">Get a specific message</a></li>
<li class="toctree-l2"><a class="reference internal" href="messages.html#delete-message">Delete message</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="claims.html">Claims</a><ul>
<li class="toctree-l2"><a class="reference internal" href="claims.html#setup">Setup</a></li>
<li class="toctree-l2"><a class="reference internal" href="claims.html#claim-messages">Claim messages</a><ul>
<li class="toctree-l3"><a class="reference internal" href="claims.html#parameters">Parameters</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="claims.html#query-claim">Query claim</a></li>
<li class="toctree-l2"><a class="reference internal" href="claims.html#update-claim">Update claim</a></li>
<li class="toctree-l2"><a class="reference internal" href="claims.html#release-claim">Release claim</a></li>
</ul>
</li>
</ul>
</div>
</div>
<div class="section" id="glossary">
<h2>Glossary<a class="headerlink" href="#glossary" title="Permalink to this headline">¶</a></h2>
<dl class="glossary docutils">
<dt id="term-claim">claim</dt>
<dd>A Claim is the process of a worker checking out a message to perform
a task. Claiming a message prevents other workers from attempting to
process the same messages.</dd>
<dt id="term-queue">queue</dt>
<dd>A Queue is an entity that holds messages. Ideally, a queue is created
per work type. For example, if you want to compress files, you would
create a queue dedicated to this job. Any application that reads from
this queue would only compress files.</dd>
<dt id="term-message">message</dt>
<dd>A Message is a task, a notification, or any meaningful data that a
producer or publisher sends to the queue. A message exists until it is
deleted by a recipient or automatically by the system based on a TTL
(time-to-live) value.</dd>
</dl>
</div>
<div class="section" id="further-links">
<h2>Further links<a class="headerlink" href="#further-links" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li><a class="reference external" href="http://docs.rackspace.com/queues/api/v1.0/cq-gettingstarted/content/DB_Overview.html">Getting Started Guide for the API</a></li>
<li><a class="reference external" href="http://docs.rackspace.com/queues/api/v1.0/cq-devguide/content/overview.html">API Developer Guide</a></li>
<li><a class="reference external" href="http://docs.rackspace.com/queues/api/v1.0/cq-gettingstarted/content/doc-change-history.html">API release history</a></li>
</ul>
</div>
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