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<h1>Appcontroller C0 Coverage Information - RCov</h1>
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<h2>lib/rabbitmq.rb</h2>
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<div class="report_table_wrapper">
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<table class='report' id='report_table'>
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<th class="left_align">Name</th>
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<th class="right_align">Total Lines</th>
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<th class="right_align">Lines of Code</th>
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<th class="left_align">Total Coverage</th>
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<th class="left_align">Code Coverage</th>
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<td class="left_align"><a href="lib-rabbitmq_rb.html">lib/rabbitmq.rb</a></td>
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<td class='right_align'><tt>89</tt></td>
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<td class='right_align'><tt>40</tt></td>
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<td class="left_align"><div class="percent_graph_legend"><tt class=''>97.75%</tt></div>
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<div class="percent_graph">
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<div class="covered" style="width:98px"></div>
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<div class="uncovered" style="width:2px"></div>
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<td class="left_align"><div class="percent_graph_legend"><tt class=''>95.00%</tt></div>
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<div class="percent_graph">
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<div class="covered" style="width:95px"></div>
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<div class="uncovered" style="width:5px"></div>
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<div class="key"><pre><span class='marked'>Code reported as executed by Ruby looks like this...</span><span class='marked1'>and this: this line is also marked as covered.</span><span class='inferred'>Lines considered as run by rcov, but not reported by Ruby, look like this,</span><span class='inferred1'>and this: these lines were inferred by rcov (using simple heuristics).</span><span class='uncovered'>Finally, here's a line marked as not executed.</span></pre></div>
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<h3>Coverage Details</h3>
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<table class="details">
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<td><pre><a name="line1">1</a> #!/usr/bin/ruby -w</pre></td>
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<td><pre><a name="line2">2</a> </pre></td>
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<td><pre><a name="line3">3</a> </pre></td>
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<td><pre><a name="line4">4</a> # Imports for AppController libraries</pre></td>
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<td><pre><a name="line5">5</a> $:.unshift File.join(File.dirname(__FILE__))</pre></td>
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<td><pre><a name="line6">6</a> require 'djinn_job_data'</pre></td>
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<td><pre><a name="line7">7</a> require 'helperfunctions'</pre></td>
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<td><pre><a name="line8">8</a> </pre></td>
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<td><pre><a name="line9">9</a> </pre></td>
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<td><pre><a name="line10">10</a> # To implement support for the Google App Engine Task Queue API, we use</pre></td>
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<td><pre><a name="line11">11</a> # the open source rabbitmq server. This lets users dispatch background</pre></td>
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<td><pre><a name="line12">12</a> # tasks, whose data are stored as items in rabbitmq. This module provides</pre></td>
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<td><pre><a name="line13">13</a> # methods that automatically configure and deploy rabbitmq as needed.</pre></td>
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<td><pre><a name="line14">14</a> module RabbitMQ</pre></td>
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<td><pre><a name="line15">15</a> </pre></td>
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<td><pre><a name="line16">16</a> </pre></td>
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<td><pre><a name="line17">17</a> # The port that the RabbitMQ server runs on, by default.</pre></td>
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<td><pre><a name="line18">18</a> SERVER_PORT = 5672 </pre></td>
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<td><pre><a name="line19">19</a> </pre></td>
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<td><pre><a name="line20">20</a> </pre></td>
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<td><pre><a name="line21">21</a> # The path to the file that the shared secret should be written to.</pre></td>
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<td><pre><a name="line22">22</a> COOKIE_FILE = "/var/lib/rabbitmq/.erlang.cookie"</pre></td>
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<td><pre><a name="line23">23</a> </pre></td>
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<td><pre><a name="line24">24</a> # Starts a service that we refer to as a "rabbitmq_master", a RabbitMQ</pre></td>
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<td><pre><a name="line25">25</a> # service that other nodes can rely on to be running RabbitMQ.</pre></td>
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<td><pre><a name="line26">26</a> def self.start_master()</pre></td>
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<td><pre><a name="line27">27</a> Djinn.log_debug("Starting RabbitMQ Master")</pre></td>
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<td><pre><a name="line28">28</a> self.write_cookie()</pre></td>
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<td><pre><a name="line29">29</a> self.erase_local_files()</pre></td>
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<td><pre><a name="line30">30</a> start_cmd = "rabbitmq-server -detached -setcookie " +</pre></td>
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<td><pre><a name="line31">31</a> "#{HelperFunctions.get_secret()} && rabbitmqctl reset;"</pre></td>
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<td><pre><a name="line32">32</a> Djinn.log_run("#{start_cmd}")</pre></td>
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<td><pre><a name="line33">33</a> end</pre></td>
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<td><pre><a name="line34">34</a> </pre></td>
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<td><pre><a name="line35">35</a> </pre></td>
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<td><pre><a name="line36">36</a> # Starts a service that we refer to as a "rabbitmq slave". Since all nodes in</pre></td>
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<td><pre><a name="line37">37</a> # RabbitMQ are equal, this name isn't exactly fair, so what this role means</pre></td>
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<td><pre><a name="line38">38</a> # here is "start a RabbitMQ server and connect it to the server on the machine</pre></td>
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<td><pre><a name="line39">39</a> # playing the 'rabbitmq_master' role."</pre></td>
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<td><pre><a name="line40">40</a> def self.start_slave(master_ip)</pre></td>
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<td><pre><a name="line41">41</a> Djinn.log_debug("Starting RabbitMQ Slave")</pre></td>
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<td><pre><a name="line42">42</a> self.write_cookie()</pre></td>
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<td><pre><a name="line43">43</a> self.erase_local_files()</pre></td>
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<td><pre><a name="line44">44</a> </pre></td>
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<td><pre><a name="line45">45</a> # Wait for RabbitMQ on master node to come up</pre></td>
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<td><pre><a name="line46">46</a> HelperFunctions.sleep_until_port_is_open(master_ip, SERVER_PORT)</pre></td>
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<td><pre><a name="line47">47</a> </pre></td>
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<td><pre><a name="line48">48</a> # start the server, reset it to join the head node</pre></td>
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<td><pre><a name="line49">49</a> start_cmds = ["rabbitmq-server -detached -setcookie #{HelperFunctions.get_secret()}",</pre></td>
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<td><pre><a name="line50">50</a> "rabbitmqctl start_app",</pre></td>
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<td><pre><a name="line51">51</a> "rabbitmqctl stop_app",</pre></td>
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<td><pre><a name="line52">52</a> "rabbitmqctl reset",</pre></td>
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<td><pre><a name="line53">53</a> "rabbitmqctl cluster rabbit@appscale-image0",</pre></td>
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<td><pre><a name="line54">54</a> "rabbitmqctl start_app"]</pre></td>
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<td><pre><a name="line55">55</a> full_cmd = "#{start_cmds.join('; ')}"</pre></td>
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<td><pre><a name="line56">56</a> </pre></td>
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<td><pre><a name="line57">57</a> Djinn.log_run("#{full_cmd}")</pre></td>
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<td><pre><a name="line58">58</a> HelperFunctions.sleep_until_port_is_open("localhost", SERVER_PORT)</pre></td>
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<td><pre><a name="line59">59</a> end</pre></td>
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<td><pre><a name="line60">60</a> </pre></td>
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<td><pre><a name="line61">61</a> </pre></td>
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<td><pre><a name="line62">62</a> # Stops the RabbitMQ server on this node.</pre></td>
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<td><pre><a name="line63">63</a> # TODO(cgb): It doesn't actually do anything right now - find out what we</pre></td>
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<td><pre><a name="line64">64</a> # need to do to stop the server.</pre></td>
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<td><pre><a name="line65">65</a> def self.stop()</pre></td>
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<td><pre><a name="line66">66</a> Djinn.log_debug("Shutting down RabbitMQ")</pre></td>
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<td><pre><a name="line67">67</a> end</pre></td>
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<td><pre><a name="line68">68</a> </pre></td>
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<td><pre><a name="line69">69</a> </pre></td>
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<td><pre><a name="line70">70</a> # Erlang processes use a secret value as a password to authenticate between</pre></td>
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<td><pre><a name="line71">71</a> # one another. Since this is pretty much the same thing we do in AppScale</pre></td>
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<td><pre><a name="line72">72</a> # with our secret key, use the same key here.</pre></td>
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<td><pre><a name="line73">73</a> # TODO(cgb): Consider using a different key, so that if one key is compromised</pre></td>
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<td><pre><a name="line74">74</a> # it doesn't compromise the other.</pre></td>
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<td><pre><a name="line75">75</a> def self.write_cookie()</pre></td>
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<td><pre><a name="line76">76</a> HelperFunctions.write_file(COOKIE_FILE, HelperFunctions.get_secret())</pre></td>
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<td><pre><a name="line77">77</a> end</pre></td>
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<td><pre><a name="line78">78</a> </pre></td>
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<td><pre><a name="line79">79</a> </pre></td>
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<td><pre><a name="line80">80</a> # Erases all the files that RabbitMQ normally writes to, which can be useful</pre></td>
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<td><pre><a name="line81">81</a> # to ensure that we start up RabbitMQ without left-over state from previous</pre></td>
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<td><pre><a name="line82">82</a> # runs.</pre></td>
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<td><pre><a name="line83">83</a> def self.erase_local_files()</pre></td>
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<td><pre><a name="line84">84</a> Djinn.log_run("rm -rf /var/log/rabbitmq/*")</pre></td>
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<td><pre><a name="line85">85</a> Djinn.log_run("rm -rf /var/lib/rabbitmq/mnesia/*")</pre></td>
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<td><pre><a name="line86">86</a> end</pre></td>
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<td><pre><a name="line87">87</a> </pre></td>
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<td><pre><a name="line88">88</a> </pre></td>
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<td><pre><a name="line89">89</a> end</pre></td>
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<p>Generated on Sun Feb 26 23:19:27 -0800 2012 with <a href="http://github.com/relevance/rcov">rcov 0.9.8</a></p>