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<title>Coverage for qsim.transforms.base: 17%</title>
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<h1>Coverage for <b>qsim.transforms.base</b> :
<span class='pc_cov'>17%</span>
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125 statements
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<span class='exc shortkey_x' onclick='coverage.toggle_lines(this, "exc")'>0 excluded</span>
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<p id='t1' class='stm run hide_run'><span class='key'>import</span> <span class='nam'>zmq</span><span class='strut'>&nbsp;</span></p>
<p id='t2' class='stm run hide_run'><span class='key'>import</span> <span class='nam'>logging</span><span class='strut'>&nbsp;</span></p>
<p id='t3' class='stm run hide_run'><span class='key'>import</span> <span class='nam'>datetime</span><span class='strut'>&nbsp;</span></p>
<p id='t4' class='stm run hide_run'><span class='key'>import</span> <span class='nam'>json</span><span class='strut'>&nbsp;</span></p>
<p id='t5' class='stm run hide_run'><span class='key'>import</span> <span class='nam'>copy</span><span class='strut'>&nbsp;</span></p>
<p id='t6' class='stm run hide_run'><span class='key'>import</span> <span class='nam'>multiprocessing</span><span class='strut'>&nbsp;</span></p>
<p id='t7' class='stm run hide_run'><span class='key'>import</span> <span class='nam'>qsim</span><span class='op'>.</span><span class='nam'>util</span> <span class='key'>as</span> <span class='nam'>qutil</span><span class='strut'>&nbsp;</span></p>
<p id='t8' class='stm run hide_run'><span class='key'>import</span> <span class='nam'>qsim</span><span class='op'>.</span><span class='nam'>simulator</span><span class='op'>.</span><span class='nam'>config</span> <span class='key'>as</span> <span class='nam'>config</span><span class='strut'>&nbsp;</span></p>
<p id='t9' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t10' class='stm run hide_run'><span class='key'>class</span> <span class='nam'>Transform</span><span class='op'>(</span><span class='nam'>object</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t11' class='pln'>&nbsp; &nbsp; <span class='str'>&quot;&quot;&quot;Parent class for feed transforms. Subclass and override transform method to create a new derived value from the combined feed.&quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t12' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t13' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>__init__</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>,</span> <span class='nam'>feed</span><span class='op'>,</span> <span class='nam'>config_dict</span><span class='op'>,</span> <span class='nam'>result_address</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t14' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t15' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; feed_address&nbsp; &nbsp; - zmq socket address, Transform will CONNECT a PULL socket and receive messages until &quot;DONE&quot; is received.</span><span class='strut'>&nbsp;</span></p>
<p id='t16' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; result_address&nbsp; - zmq socket address, Transform will CONNECT a PUSH socket and send messaes until feed_socket receives &quot;DONE&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t17' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; sync_address&nbsp; &nbsp; - zmq socket address, Transform will CONNECT a REQ socket and send/receive one message before entering feed loop</span><span class='strut'>&nbsp;</span></p>
<p id='t18' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; config&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; - must be a dict that can be wrapped in a config.Config object with at least an entry for &#39;name&#39;:string value</span><span class='strut'>&nbsp;</span></p>
<p id='t19' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; server&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; - if True, transform will bind to the result address (and act as a server), if False it will connect. The</span><span class='strut'>&nbsp;</span></p>
<p id='t20' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; the last transform in a series should be server=True so that clients can connect.</span><span class='strut'>&nbsp;</span></p>
<p id='t21' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t22' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>logger</span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; <span class='op'>=</span> <span class='nam'>qutil</span><span class='op'>.</span><span class='nam'>logger</span><span class='strut'>&nbsp;</span></p>
<p id='t23' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed</span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; <span class='op'>=</span> <span class='nam'>feed</span><span class='strut'>&nbsp;</span></p>
<p id='t24' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed_address</span>&nbsp; &nbsp; &nbsp;&nbsp; <span class='op'>=</span> <span class='nam'>feed</span><span class='op'>.</span><span class='nam'>feed_address</span><span class='strut'>&nbsp;</span></p>
<p id='t25' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>result_address</span>&nbsp; &nbsp;&nbsp; <span class='op'>=</span> <span class='nam'>result_address</span><span class='strut'>&nbsp;</span></p>
<p id='t26' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>config</span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; <span class='op'>=</span> <span class='nam'>config</span><span class='op'>.</span><span class='nam'>Config</span><span class='op'>(</span><span class='nam'>config_dict</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t27' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>name</span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>config</span><span class='op'>.</span><span class='nam'>get_string</span><span class='op'>(</span><span class='str'>&#39;name&#39;</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t28' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>sync</span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; <span class='op'>=</span> <span class='nam'>FeedSync</span><span class='op'>(</span><span class='nam'>feed</span><span class='op'>,</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t29' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>state</span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='op'>=</span> <span class='op'>{</span><span class='op'>}</span><span class='strut'>&nbsp;</span></p>
<p id='t30' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>state</span><span class='op'>[</span><span class='str'>&#39;name&#39;</span><span class='op'>]</span>&nbsp; &nbsp; &nbsp; <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>name</span><span class='strut'>&nbsp;</span></p>
<p id='t31' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>received_count</span>&nbsp; &nbsp;&nbsp; <span class='op'>=</span> <span class='num'>0</span><span class='strut'>&nbsp;</span></p>
<p id='t32' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>sent_count</span>&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; <span class='op'>=</span> <span class='num'>0</span><span class='strut'>&nbsp;</span></p>
<p id='t33' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t34' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>run</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t35' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>open</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t36' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>process_all</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t37' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>close</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t38' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t39' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>open</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t40' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>context</span> <span class='op'>=</span> <span class='nam'>zmq</span><span class='op'>.</span><span class='nam'>Context</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t41' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t42' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>logger</span><span class='op'>.</span><span class='nam'>info</span><span class='op'>(</span><span class='str'>&quot;starting {name} transform&quot;</span><span class='op'>.</span><span class='nam'>format</span><span class='op'>(</span><span class='nam'>name</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>)</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t43' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'>#create the feed SUB. </span><span class='strut'>&nbsp;</span></p>
<p id='t44' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed_socket</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>context</span><span class='op'>.</span><span class='nam'>socket</span><span class='op'>(</span><span class='nam'>zmq</span><span class='op'>.</span><span class='nam'>SUB</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t45' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed_socket</span><span class='op'>.</span><span class='nam'>connect</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed_address</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t46' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed_socket</span><span class='op'>.</span><span class='nam'>setsockopt</span><span class='op'>(</span><span class='nam'>zmq</span><span class='op'>.</span><span class='nam'>SUBSCRIBE</span><span class='op'>,</span><span class='str'>&#39;&#39;</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t47' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t48' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'>#create the result PUSH</span><span class='strut'>&nbsp;</span></p>
<p id='t49' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>result_socket</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>context</span><span class='op'>.</span><span class='nam'>socket</span><span class='op'>(</span><span class='nam'>zmq</span><span class='op'>.</span><span class='nam'>PUSH</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t50' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>result_socket</span><span class='op'>.</span><span class='nam'>connect</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>result_address</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t51' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t52' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>process_all</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t53' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>logger</span><span class='op'>.</span><span class='nam'>info</span><span class='op'>(</span><span class='str'>&quot;starting {name} event loop&quot;</span><span class='op'>.</span><span class='nam'>format</span><span class='op'>(</span><span class='nam'>name</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>)</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t54' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>sync</span><span class='op'>.</span><span class='nam'>confirm</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t55' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t56' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>while</span> <span class='nam'>True</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t57' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>message</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed_socket</span><span class='op'>.</span><span class='nam'>recv</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t58' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span><span class='op'>(</span><span class='nam'>message</span> <span class='op'>==</span> <span class='str'>&quot;DONE&quot;</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t59' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>logger</span><span class='op'>.</span><span class='nam'>info</span><span class='op'>(</span><span class='str'>&quot;{name} received the Done message from the feed&quot;</span><span class='op'>.</span><span class='nam'>format</span><span class='op'>(</span><span class='nam'>name</span><span class='op'>=</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>)</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t60' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>result_socket</span><span class='op'>.</span><span class='nam'>send</span><span class='op'>(</span><span class='str'>&quot;DONE&quot;</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t61' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>break</span><span class='op'>;</span><span class='strut'>&nbsp;</span></p>
<p id='t62' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>received_count</span> <span class='op'>+=</span> <span class='num'>1</span><span class='strut'>&nbsp;</span></p>
<p id='t63' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>event</span> <span class='op'>=</span> <span class='nam'>json</span><span class='op'>.</span><span class='nam'>loads</span><span class='op'>(</span><span class='nam'>message</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t64' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>cur_state</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>transform</span><span class='op'>(</span><span class='nam'>event</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t65' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>cur_state</span><span class='op'>[</span><span class='str'>&#39;dt&#39;</span><span class='op'>]</span> <span class='op'>=</span> <span class='nam'>event</span><span class='op'>[</span><span class='str'>&#39;dt&#39;</span><span class='op'>]</span><span class='strut'>&nbsp;</span></p>
<p id='t66' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>cur_state</span><span class='op'>[</span><span class='str'>&#39;name&#39;</span><span class='op'>]</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>name</span><span class='strut'>&nbsp;</span></p>
<p id='t67' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>result_socket</span><span class='op'>.</span><span class='nam'>send</span><span class='op'>(</span><span class='nam'>json</span><span class='op'>.</span><span class='nam'>dumps</span><span class='op'>(</span><span class='nam'>cur_state</span><span class='op'>)</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t68' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>sent_count</span> <span class='op'>+=</span> <span class='num'>1</span><span class='strut'>&nbsp;</span></p>
<p id='t69' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t70' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>close</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t71' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>logger</span><span class='op'>.</span><span class='nam'>info</span><span class='op'>(</span><span class='str'>&quot;Transform {name} recieved {r} and sent {s}&quot;</span><span class='op'>.</span><span class='nam'>format</span><span class='op'>(</span><span class='nam'>name</span><span class='op'>=</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>,</span> <span class='nam'>r</span><span class='op'>=</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>received_count</span><span class='op'>,</span> <span class='nam'>s</span><span class='op'>=</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>sent_count</span><span class='op'>)</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t72' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t73' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed_socket</span><span class='op'>.</span><span class='nam'>close</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t74' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>result_socket</span><span class='op'>.</span><span class='nam'>close</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t75' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>context</span><span class='op'>.</span><span class='nam'>term</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t76' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t77' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>transform</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>,</span> <span class='nam'>event</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t78' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; Must return the transformed value as a map with {name:&quot;name of new transform&quot;, value: &quot;value of new field&quot;}</span><span class='strut'>&nbsp;</span></p>
<p id='t79' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Transforms run in parallel and results are merged into a single map, so transform names must be unique. </span><span class='strut'>&nbsp;</span></p>
<p id='t80' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Best practice is to use the self.state object initialized from the transform configuration, and only set the</span><span class='strut'>&nbsp;</span></p>
<p id='t81' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; transformed value:</span><span class='strut'>&nbsp;</span></p>
<p id='t82' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; self.state[&#39;value&#39;] = transformed_value</span><span class='strut'>&nbsp;</span></p>
<p id='t83' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t84' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='op'>{</span><span class='op'>}</span><span class='strut'>&nbsp;</span></p>
<p id='t85' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t86' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t87' class='stm run hide_run'><span class='key'>class</span> <span class='nam'>MergedTransformsFeed</span><span class='op'>(</span><span class='nam'>Transform</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t88' class='pln'>&nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; Merge data feed and array of transform feeds into a single result vector.</span><span class='strut'>&nbsp;</span></p>
<p id='t89' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; PULL from feed</span><span class='strut'>&nbsp;</span></p>
<p id='t90' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; PULL from child transforms</span><span class='strut'>&nbsp;</span></p>
<p id='t91' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; PUSH merged message to client</span><span class='strut'>&nbsp;</span></p>
<p id='t92' class='pln'><span class='str'>&nbsp; &nbsp; </span><span class='strut'>&nbsp;</span></p>
<p id='t93' class='pln'><span class='str'>&nbsp; &nbsp; &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t94' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t95' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>__init__</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>,</span> <span class='nam'>feed</span><span class='op'>,</span> <span class='nam'>props</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t96' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t97' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; config - must have an entry for &#39;transforms&#39;:array of dicts, which are convertedto configs.</span><span class='strut'>&nbsp;</span></p>
<p id='t98' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t99' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>Transform</span><span class='op'>.</span><span class='nam'>__init__</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>,</span> <span class='nam'>feed</span><span class='op'>,</span> <span class='nam'>props</span><span class='op'>,</span> <span class='str'>&quot;tcp://127.0.0.1:20202&quot;</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t100' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>transform_address</span>&nbsp; <span class='op'>=</span> <span class='str'>&quot;tcp://127.0.0.1:{port}&quot;</span><span class='op'>.</span><span class='nam'>format</span><span class='op'>(</span><span class='nam'>port</span><span class='op'>=</span><span class='num'>10104</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t101' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>transform_socket</span>&nbsp;&nbsp; <span class='op'>=</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t102' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>create_transforms</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>config</span><span class='op'>.</span><span class='nam'>transforms</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t103' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t104' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t105' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>create_transforms</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>,</span> <span class='nam'>configs</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t106' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>transforms</span> <span class='op'>=</span> <span class='op'>{</span><span class='op'>}</span><span class='strut'>&nbsp;</span></p>
<p id='t107' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>for</span> <span class='nam'>props</span> <span class='key'>in</span> <span class='nam'>configs</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t108' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>class_name</span> <span class='op'>=</span> <span class='nam'>props</span><span class='op'>[</span><span class='str'>&#39;class&#39;</span><span class='op'>]</span><span class='strut'>&nbsp;</span></p>
<p id='t109' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span><span class='op'>(</span><span class='nam'>class_name</span> <span class='op'>==</span> <span class='str'>&#39;MovingAverage&#39;</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t110' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>mavg</span> <span class='op'>=</span> <span class='nam'>MovingAverage</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed</span><span class='op'>,</span> <span class='nam'>props</span><span class='op'>,</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>transform_address</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t111' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>transforms</span><span class='op'>[</span><span class='nam'>mavg</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>]</span> <span class='op'>=</span> <span class='nam'>mavg</span><span class='strut'>&nbsp;</span></p>
<p id='t112' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t113' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>keys</span> <span class='op'>=</span> <span class='nam'>copy</span><span class='op'>.</span><span class='nam'>copy</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>transforms</span><span class='op'>.</span><span class='nam'>keys</span><span class='op'>(</span><span class='op'>)</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t114' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>keys</span><span class='op'>.</span><span class='nam'>append</span><span class='op'>(</span><span class='str'>&quot;feed&quot;</span><span class='op'>)</span> <span class='com'>#for the raw feed</span><span class='strut'>&nbsp;</span></p>
<p id='t115' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>data_buffer</span> <span class='op'>=</span> <span class='nam'>MergedParallelBuffer</span><span class='op'>(</span><span class='nam'>keys</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t116' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t117' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>buffers</span> <span class='op'>=</span> <span class='op'>{</span><span class='op'>}</span><span class='strut'>&nbsp;</span></p>
<p id='t118' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>for</span> <span class='nam'>name</span><span class='op'>,</span> <span class='nam'>transform</span> <span class='key'>in</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>transforms</span><span class='op'>.</span><span class='nam'>iteritems</span><span class='op'>(</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t119' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>buffers</span><span class='op'>[</span><span class='nam'>name</span><span class='op'>]</span> <span class='op'>=</span> <span class='op'>[</span><span class='op'>]</span><span class='strut'>&nbsp;</span></p>
<p id='t120' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t121' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>open</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t122' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>context</span> <span class='op'>=</span> <span class='nam'>zmq</span><span class='op'>.</span><span class='nam'>Context</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t123' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t124' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>logger</span><span class='op'>.</span><span class='nam'>info</span><span class='op'>(</span><span class='str'>&quot;starting {name} transform&quot;</span><span class='op'>.</span><span class='nam'>format</span><span class='op'>(</span><span class='nam'>name</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>)</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t125' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'>#create the feed SUB. </span><span class='strut'>&nbsp;</span></p>
<p id='t126' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed_socket</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>context</span><span class='op'>.</span><span class='nam'>socket</span><span class='op'>(</span><span class='nam'>zmq</span><span class='op'>.</span><span class='nam'>SUB</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t127' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed_socket</span><span class='op'>.</span><span class='nam'>connect</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed_address</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t128' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed_socket</span><span class='op'>.</span><span class='nam'>setsockopt</span><span class='op'>(</span><span class='nam'>zmq</span><span class='op'>.</span><span class='nam'>SUBSCRIBE</span><span class='op'>,</span><span class='str'>&#39;&#39;</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t129' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t130' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'>#create the result PUSH</span><span class='strut'>&nbsp;</span></p>
<p id='t131' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>result_socket</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>context</span><span class='op'>.</span><span class='nam'>socket</span><span class='op'>(</span><span class='nam'>zmq</span><span class='op'>.</span><span class='nam'>PUSH</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t132' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>result_socket</span><span class='op'>.</span><span class='nam'>bind</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>result_address</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t133' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t134' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'>#create the transform PULL. </span><span class='strut'>&nbsp;</span></p>
<p id='t135' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>transform_socket</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>context</span><span class='op'>.</span><span class='nam'>socket</span><span class='op'>(</span><span class='nam'>zmq</span><span class='op'>.</span><span class='nam'>PULL</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t136' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>transform_socket</span><span class='op'>.</span><span class='nam'>bind</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>transform_address</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t137' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>data_buffer</span><span class='op'>.</span><span class='nam'>out_socket</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>result_socket</span><span class='strut'>&nbsp;</span></p>
<p id='t138' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t139' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># Initialize poll set</span><span class='strut'>&nbsp;</span></p>
<p id='t140' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>poller</span> <span class='op'>=</span> <span class='nam'>zmq</span><span class='op'>.</span><span class='nam'>Poller</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t141' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>poller</span><span class='op'>.</span><span class='nam'>register</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed_socket</span><span class='op'>,</span> <span class='nam'>zmq</span><span class='op'>.</span><span class='nam'>POLLIN</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t142' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>poller</span><span class='op'>.</span><span class='nam'>register</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>transform_socket</span><span class='op'>,</span> <span class='nam'>zmq</span><span class='op'>.</span><span class='nam'>POLLIN</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t143' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t144' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>for</span> <span class='nam'>name</span><span class='op'>,</span> <span class='nam'>transform</span> <span class='key'>in</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>transforms</span><span class='op'>.</span><span class='nam'>iteritems</span><span class='op'>(</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t145' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>logger</span><span class='op'>.</span><span class='nam'>info</span><span class='op'>(</span><span class='str'>&quot;starting {name}&quot;</span><span class='op'>.</span><span class='nam'>format</span><span class='op'>(</span><span class='nam'>name</span><span class='op'>=</span><span class='nam'>name</span><span class='op'>)</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t146' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>proc</span> <span class='op'>=</span> <span class='nam'>multiprocessing</span><span class='op'>.</span><span class='nam'>Process</span><span class='op'>(</span><span class='nam'>target</span><span class='op'>=</span><span class='nam'>transform</span><span class='op'>.</span><span class='nam'>run</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t147' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>proc</span><span class='op'>.</span><span class='nam'>start</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t148' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t149' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>sync</span><span class='op'>.</span><span class='nam'>confirm</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t150' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t151' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>close</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t152' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>transform_socket</span><span class='op'>.</span><span class='nam'>close</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t153' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>Transform</span><span class='op'>.</span><span class='nam'>close</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t154' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t155' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>process_all</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t156' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t157' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>done_count</span> <span class='op'>=</span> <span class='num'>0</span><span class='strut'>&nbsp;</span></p>
<p id='t158' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>while</span> <span class='nam'>True</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t159' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>socks</span> <span class='op'>=</span> <span class='nam'>dict</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>poller</span><span class='op'>.</span><span class='nam'>poll</span><span class='op'>(</span><span class='op'>)</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t160' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t161' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed_socket</span> <span class='key'>in</span> <span class='nam'>socks</span> <span class='key'>and</span> <span class='nam'>socks</span><span class='op'>[</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed_socket</span><span class='op'>]</span> <span class='op'>==</span> <span class='nam'>zmq</span><span class='op'>.</span><span class='nam'>POLLIN</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t162' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>message</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>feed_socket</span><span class='op'>.</span><span class='nam'>recv</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t163' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span><span class='op'>(</span><span class='nam'>message</span> <span class='op'>==</span> <span class='str'>&quot;DONE&quot;</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t164' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>logger</span><span class='op'>.</span><span class='nam'>info</span><span class='op'>(</span><span class='str'>&quot;finished receiving feed to merge&quot;</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t165' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>done_count</span> <span class='op'>+=</span> <span class='num'>1</span><span class='strut'>&nbsp;</span></p>
<p id='t166' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>else</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t167' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>received_count</span> <span class='op'>+=</span> <span class='num'>1</span><span class='strut'>&nbsp;</span></p>
<p id='t168' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>event</span> <span class='op'>=</span> <span class='nam'>json</span><span class='op'>.</span><span class='nam'>loads</span><span class='op'>(</span><span class='nam'>message</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t169' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>data_buffer</span><span class='op'>.</span><span class='nam'>append</span><span class='op'>(</span><span class='str'>&quot;feed&quot;</span><span class='op'>,</span><span class='nam'>event</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t170' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t171' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>transform_socket</span> <span class='key'>in</span> <span class='nam'>socks</span> <span class='key'>and</span> <span class='nam'>socks</span><span class='op'>[</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>transform_socket</span><span class='op'>]</span> <span class='op'>==</span> <span class='nam'>zmq</span><span class='op'>.</span><span class='nam'>POLLIN</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t172' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>t_message</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>transform_socket</span><span class='op'>.</span><span class='nam'>recv</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t173' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span><span class='op'>(</span><span class='nam'>t_message</span> <span class='op'>==</span> <span class='str'>&quot;DONE&quot;</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t174' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>logger</span><span class='op'>.</span><span class='nam'>info</span><span class='op'>(</span><span class='str'>&quot;finished receiving a transform to merge&quot;</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t175' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>done_count</span> <span class='op'>+=</span> <span class='num'>1</span><span class='strut'>&nbsp;</span></p>
<p id='t176' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>else</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t177' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>received_count</span> <span class='op'>+=</span> <span class='num'>1</span><span class='strut'>&nbsp;</span></p>
<p id='t178' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>t_event</span> <span class='op'>=</span> <span class='nam'>json</span><span class='op'>.</span><span class='nam'>loads</span><span class='op'>(</span><span class='nam'>t_message</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t179' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>data_buffer</span><span class='op'>.</span><span class='nam'>append</span><span class='op'>(</span><span class='nam'>t_event</span><span class='op'>[</span><span class='str'>&#39;name&#39;</span><span class='op'>]</span><span class='op'>,</span> <span class='nam'>t_event</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t180' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t181' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span><span class='op'>(</span><span class='nam'>done_count</span> <span class='op'>&gt;=</span> <span class='nam'>len</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>data_buffer</span><span class='op'>)</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t182' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>break</span> <span class='com'>#done!</span><span class='strut'>&nbsp;</span></p>
<p id='t183' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t184' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>data_buffer</span><span class='op'>.</span><span class='nam'>send_next</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t185' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t186' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>logger</span><span class='op'>.</span><span class='nam'>info</span><span class='op'>(</span><span class='str'>&quot;Transform {name} received {r} and sent {s}&quot;</span><span class='op'>.</span><span class='nam'>format</span><span class='op'>(</span><span class='nam'>name</span><span class='op'>=</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>,</span> <span class='nam'>r</span><span class='op'>=</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>data_buffer</span><span class='op'>.</span><span class='nam'>received_count</span><span class='op'>,</span> <span class='nam'>s</span><span class='op'>=</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>data_buffer</span><span class='op'>.</span><span class='nam'>sent_count</span><span class='op'>)</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t187' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>logger</span><span class='op'>.</span><span class='nam'>info</span><span class='op'>(</span><span class='str'>&quot;about to drain {n} messages from merger&#39;s buffer&quot;</span><span class='op'>.</span><span class='nam'>format</span><span class='op'>(</span><span class='nam'>n</span><span class='op'>=</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>data_buffer</span><span class='op'>.</span><span class='nam'>pending_messages</span><span class='op'>(</span><span class='op'>)</span><span class='op'>)</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t188' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t189' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'>#drain any remaining messages in the buffer</span><span class='strut'>&nbsp;</span></p>
<p id='t190' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>data_buffer</span><span class='op'>.</span><span class='nam'>drain</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t191' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t192' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'>#signal to client that we&#39;re done</span><span class='strut'>&nbsp;</span></p>
<p id='t193' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>result_socket</span><span class='op'>.</span><span class='nam'>send</span><span class='op'>(</span><span class='str'>&quot;DONE&quot;</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t194' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>logger</span><span class='op'>.</span><span class='nam'>info</span><span class='op'>(</span><span class='str'>&quot;Transform {name} received {r} and sent {s}&quot;</span><span class='op'>.</span><span class='nam'>format</span><span class='op'>(</span><span class='nam'>name</span><span class='op'>=</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>name</span><span class='op'>,</span> <span class='nam'>r</span><span class='op'>=</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>data_buffer</span><span class='op'>.</span><span class='nam'>received_count</span><span class='op'>,</span> <span class='nam'>s</span><span class='op'>=</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>data_buffer</span><span class='op'>.</span><span class='nam'>sent_count</span><span class='op'>)</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t195' class='pln'><span class='strut'>&nbsp;</span></p>
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