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   <h1>Source code for apache_beam.runners.direct.direct_metrics</h1><div class="highlight"><pre>
 <span></span><span class="c1">#</span>
 <span class="c1"># Licensed to the Apache Software Foundation (ASF) under one or more</span>
 <span class="c1"># contributor license agreements.  See the NOTICE file distributed with</span>
 <span class="c1"># this work for additional information regarding copyright ownership.</span>
 <span class="c1"># The ASF licenses this file to You under the Apache License, Version 2.0</span>
 <span class="c1"># (the &quot;License&quot;); you may not use this file except in compliance with</span>
 <span class="c1"># the License.  You may obtain a copy of the License at</span>
 <span class="c1">#</span>
 <span class="c1">#    http://www.apache.org/licenses/LICENSE-2.0</span>
 <span class="c1">#</span>
 <span class="c1"># Unless required by applicable law or agreed to in writing, software</span>
 <span class="c1"># distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span>
 <span class="c1"># WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
 <span class="c1"># See the License for the specific language governing permissions and</span>
 <span class="c1"># limitations under the License.</span>
 <span class="c1">#</span>

 <span class="sd">&quot;&quot;&quot;</span>
 <span class="sd">DirectRunner implementation of MetricResults. It is in charge not only of</span>
 <span class="sd">responding to queries of current metrics, but also of keeping the common</span>
 <span class="sd">state consistent.</span>
 <span class="sd">&quot;&quot;&quot;</span>
 <span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">absolute_import</span>

 <span class="kn">import</span> <span class="nn">threading</span>
 <span class="kn">from</span> <span class="nn">builtins</span> <span class="k">import</span> <span class="nb">object</span>
 <span class="kn">from</span> <span class="nn">collections</span> <span class="k">import</span> <span class="n">defaultdict</span>

 <span class="kn">from</span> <span class="nn">apache_beam.metrics.cells</span> <span class="k">import</span> <span class="n">CounterAggregator</span>
 <span class="kn">from</span> <span class="nn">apache_beam.metrics.cells</span> <span class="k">import</span> <span class="n">DistributionAggregator</span>
 <span class="kn">from</span> <span class="nn">apache_beam.metrics.cells</span> <span class="k">import</span> <span class="n">GaugeAggregator</span>
 <span class="kn">from</span> <span class="nn">apache_beam.metrics.execution</span> <span class="k">import</span> <span class="n">MetricKey</span>
 <span class="kn">from</span> <span class="nn">apache_beam.metrics.execution</span> <span class="k">import</span> <span class="n">MetricResult</span>
 <span class="kn">from</span> <span class="nn">apache_beam.metrics.metric</span> <span class="k">import</span> <span class="n">MetricResults</span>


 <div class="viewcode-block" id="DirectMetrics"><a class="viewcode-back" href="../../../../apache_beam.runners.direct.direct_metrics.html#apache_beam.runners.direct.direct_metrics.DirectMetrics">[docs]</a><span class="k">class</span> <span class="nc">DirectMetrics</span><span class="p">(</span><span class="n">MetricResults</span><span class="p">):</span>
   <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">_counters</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span>
         <span class="k">lambda</span><span class="p">:</span> <span class="n">DirectMetric</span><span class="p">(</span><span class="n">CounterAggregator</span><span class="p">()))</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">_distributions</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span>
         <span class="k">lambda</span><span class="p">:</span> <span class="n">DirectMetric</span><span class="p">(</span><span class="n">DistributionAggregator</span><span class="p">()))</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">_gauges</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span>
         <span class="k">lambda</span><span class="p">:</span> <span class="n">DirectMetric</span><span class="p">(</span><span class="n">GaugeAggregator</span><span class="p">()))</span>

   <span class="k">def</span> <span class="nf">_apply_operation</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">bundle</span><span class="p">,</span> <span class="n">updates</span><span class="p">,</span> <span class="n">op</span><span class="p">):</span>
     <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">updates</span><span class="o">.</span><span class="n">counters</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
       <span class="n">op</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_counters</span><span class="p">[</span><span class="n">k</span><span class="p">],</span> <span class="n">bundle</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>

     <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">updates</span><span class="o">.</span><span class="n">distributions</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
       <span class="n">op</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_distributions</span><span class="p">[</span><span class="n">k</span><span class="p">],</span> <span class="n">bundle</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>

     <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">updates</span><span class="o">.</span><span class="n">gauges</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
       <span class="n">op</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_gauges</span><span class="p">[</span><span class="n">k</span><span class="p">],</span> <span class="n">bundle</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>

 <div class="viewcode-block" id="DirectMetrics.commit_logical"><a class="viewcode-back" href="../../../../apache_beam.runners.direct.direct_metrics.html#apache_beam.runners.direct.direct_metrics.DirectMetrics.commit_logical">[docs]</a>  <span class="k">def</span> <span class="nf">commit_logical</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">bundle</span><span class="p">,</span> <span class="n">updates</span><span class="p">):</span>
     <span class="n">op</span> <span class="o">=</span> <span class="k">lambda</span> <span class="n">obj</span><span class="p">,</span> <span class="n">bundle</span><span class="p">,</span> <span class="n">update</span><span class="p">:</span> <span class="n">obj</span><span class="o">.</span><span class="n">commit_logical</span><span class="p">(</span><span class="n">bundle</span><span class="p">,</span> <span class="n">update</span><span class="p">)</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">_apply_operation</span><span class="p">(</span><span class="n">bundle</span><span class="p">,</span> <span class="n">updates</span><span class="p">,</span> <span class="n">op</span><span class="p">)</span></div>

 <div class="viewcode-block" id="DirectMetrics.commit_physical"><a class="viewcode-back" href="../../../../apache_beam.runners.direct.direct_metrics.html#apache_beam.runners.direct.direct_metrics.DirectMetrics.commit_physical">[docs]</a>  <span class="k">def</span> <span class="nf">commit_physical</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">bundle</span><span class="p">,</span> <span class="n">updates</span><span class="p">):</span>
     <span class="n">op</span> <span class="o">=</span> <span class="k">lambda</span> <span class="n">obj</span><span class="p">,</span> <span class="n">bundle</span><span class="p">,</span> <span class="n">update</span><span class="p">:</span> <span class="n">obj</span><span class="o">.</span><span class="n">commit_physical</span><span class="p">(</span><span class="n">bundle</span><span class="p">,</span> <span class="n">update</span><span class="p">)</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">_apply_operation</span><span class="p">(</span><span class="n">bundle</span><span class="p">,</span> <span class="n">updates</span><span class="p">,</span> <span class="n">op</span><span class="p">)</span></div>

 <div class="viewcode-block" id="DirectMetrics.update_physical"><a class="viewcode-back" href="../../../../apache_beam.runners.direct.direct_metrics.html#apache_beam.runners.direct.direct_metrics.DirectMetrics.update_physical">[docs]</a>  <span class="k">def</span> <span class="nf">update_physical</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">bundle</span><span class="p">,</span> <span class="n">updates</span><span class="p">):</span>
     <span class="n">op</span> <span class="o">=</span> <span class="k">lambda</span> <span class="n">obj</span><span class="p">,</span> <span class="n">bundle</span><span class="p">,</span> <span class="n">update</span><span class="p">:</span> <span class="n">obj</span><span class="o">.</span><span class="n">update_physical</span><span class="p">(</span><span class="n">bundle</span><span class="p">,</span> <span class="n">update</span><span class="p">)</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">_apply_operation</span><span class="p">(</span><span class="n">bundle</span><span class="p">,</span> <span class="n">updates</span><span class="p">,</span> <span class="n">op</span><span class="p">)</span></div>

 <div class="viewcode-block" id="DirectMetrics.query"><a class="viewcode-back" href="../../../../apache_beam.runners.direct.direct_metrics.html#apache_beam.runners.direct.direct_metrics.DirectMetrics.query">[docs]</a>  <span class="k">def</span> <span class="nf">query</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="nb">filter</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
     <span class="n">counters</span> <span class="o">=</span> <span class="p">[</span><span class="n">MetricResult</span><span class="p">(</span><span class="n">MetricKey</span><span class="p">(</span><span class="n">k</span><span class="o">.</span><span class="n">step</span><span class="p">,</span> <span class="n">k</span><span class="o">.</span><span class="n">metric</span><span class="p">),</span>
                              <span class="n">v</span><span class="o">.</span><span class="n">extract_committed</span><span class="p">(),</span>
                              <span class="n">v</span><span class="o">.</span><span class="n">extract_latest_attempted</span><span class="p">())</span>
                 <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_counters</span><span class="o">.</span><span class="n">items</span><span class="p">()</span>
                 <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">matches</span><span class="p">(</span><span class="nb">filter</span><span class="p">,</span> <span class="n">k</span><span class="p">)]</span>
     <span class="n">distributions</span> <span class="o">=</span> <span class="p">[</span><span class="n">MetricResult</span><span class="p">(</span><span class="n">MetricKey</span><span class="p">(</span><span class="n">k</span><span class="o">.</span><span class="n">step</span><span class="p">,</span> <span class="n">k</span><span class="o">.</span><span class="n">metric</span><span class="p">),</span>
                                   <span class="n">v</span><span class="o">.</span><span class="n">extract_committed</span><span class="p">(),</span>
                                   <span class="n">v</span><span class="o">.</span><span class="n">extract_latest_attempted</span><span class="p">())</span>
                      <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_distributions</span><span class="o">.</span><span class="n">items</span><span class="p">()</span>
                      <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">matches</span><span class="p">(</span><span class="nb">filter</span><span class="p">,</span> <span class="n">k</span><span class="p">)]</span>
     <span class="n">gauges</span> <span class="o">=</span> <span class="p">[</span><span class="n">MetricResult</span><span class="p">(</span><span class="n">MetricKey</span><span class="p">(</span><span class="n">k</span><span class="o">.</span><span class="n">step</span><span class="p">,</span> <span class="n">k</span><span class="o">.</span><span class="n">metric</span><span class="p">),</span>
                            <span class="n">v</span><span class="o">.</span><span class="n">extract_committed</span><span class="p">(),</span>
                            <span class="n">v</span><span class="o">.</span><span class="n">extract_latest_attempted</span><span class="p">())</span>
               <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_gauges</span><span class="o">.</span><span class="n">items</span><span class="p">()</span>
               <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">matches</span><span class="p">(</span><span class="nb">filter</span><span class="p">,</span> <span class="n">k</span><span class="p">)]</span>

     <span class="k">return</span> <span class="p">{</span><span class="bp">self</span><span class="o">.</span><span class="n">COUNTERS</span><span class="p">:</span> <span class="n">counters</span><span class="p">,</span>
             <span class="bp">self</span><span class="o">.</span><span class="n">DISTRIBUTIONS</span><span class="p">:</span> <span class="n">distributions</span><span class="p">,</span>
             <span class="bp">self</span><span class="o">.</span><span class="n">GAUGES</span><span class="p">:</span> <span class="n">gauges</span><span class="p">}</span></div></div>


 <div class="viewcode-block" id="DirectMetric"><a class="viewcode-back" href="../../../../apache_beam.runners.direct.direct_metrics.html#apache_beam.runners.direct.direct_metrics.DirectMetric">[docs]</a><span class="k">class</span> <span class="nc">DirectMetric</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
   <span class="sd">&quot;&quot;&quot; Keeps a consistent state for a single metric.</span>

 <span class="sd">  It keeps track of the metric&#39;s physical and logical updates.</span>
 <span class="sd">  It&#39;s thread safe.</span>
 <span class="sd">  &quot;&quot;&quot;</span>
   <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">aggregator</span><span class="p">):</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">aggregator</span> <span class="o">=</span> <span class="n">aggregator</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">_attempted_lock</span> <span class="o">=</span> <span class="n">threading</span><span class="o">.</span><span class="n">Lock</span><span class="p">()</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">finished_attempted</span> <span class="o">=</span> <span class="n">aggregator</span><span class="o">.</span><span class="n">identity_element</span><span class="p">()</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">inflight_attempted</span> <span class="o">=</span> <span class="p">{}</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">_committed_lock</span> <span class="o">=</span> <span class="n">threading</span><span class="o">.</span><span class="n">Lock</span><span class="p">()</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">finished_committed</span> <span class="o">=</span> <span class="n">aggregator</span><span class="o">.</span><span class="n">identity_element</span><span class="p">()</span>

 <div class="viewcode-block" id="DirectMetric.commit_logical"><a class="viewcode-back" href="../../../../apache_beam.runners.direct.direct_metrics.html#apache_beam.runners.direct.direct_metrics.DirectMetric.commit_logical">[docs]</a>  <span class="k">def</span> <span class="nf">commit_logical</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">bundle</span><span class="p">,</span> <span class="n">update</span><span class="p">):</span>
     <span class="k">with</span> <span class="bp">self</span><span class="o">.</span><span class="n">_committed_lock</span><span class="p">:</span>
       <span class="bp">self</span><span class="o">.</span><span class="n">finished_committed</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">aggregator</span><span class="o">.</span><span class="n">combine</span><span class="p">(</span><span class="n">update</span><span class="p">,</span>
                                                         <span class="bp">self</span><span class="o">.</span><span class="n">finished_committed</span><span class="p">)</span></div>

 <div class="viewcode-block" id="DirectMetric.commit_physical"><a class="viewcode-back" href="../../../../apache_beam.runners.direct.direct_metrics.html#apache_beam.runners.direct.direct_metrics.DirectMetric.commit_physical">[docs]</a>  <span class="k">def</span> <span class="nf">commit_physical</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">bundle</span><span class="p">,</span> <span class="n">update</span><span class="p">):</span>
     <span class="k">with</span> <span class="bp">self</span><span class="o">.</span><span class="n">_attempted_lock</span><span class="p">:</span>
       <span class="bp">self</span><span class="o">.</span><span class="n">inflight_attempted</span><span class="p">[</span><span class="n">bundle</span><span class="p">]</span> <span class="o">=</span> <span class="n">update</span>
       <span class="bp">self</span><span class="o">.</span><span class="n">finished_attempted</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">aggregator</span><span class="o">.</span><span class="n">combine</span><span class="p">(</span><span class="n">update</span><span class="p">,</span>
                                                         <span class="bp">self</span><span class="o">.</span><span class="n">finished_attempted</span><span class="p">)</span>
       <span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">inflight_attempted</span><span class="p">[</span><span class="n">bundle</span><span class="p">]</span></div>

 <div class="viewcode-block" id="DirectMetric.update_physical"><a class="viewcode-back" href="../../../../apache_beam.runners.direct.direct_metrics.html#apache_beam.runners.direct.direct_metrics.DirectMetric.update_physical">[docs]</a>  <span class="k">def</span> <span class="nf">update_physical</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">bundle</span><span class="p">,</span> <span class="n">update</span><span class="p">):</span>
     <span class="bp">self</span><span class="o">.</span><span class="n">inflight_attempted</span><span class="p">[</span><span class="n">bundle</span><span class="p">]</span> <span class="o">=</span> <span class="n">update</span></div>

 <div class="viewcode-block" id="DirectMetric.extract_committed"><a class="viewcode-back" href="../../../../apache_beam.runners.direct.direct_metrics.html#apache_beam.runners.direct.direct_metrics.DirectMetric.extract_committed">[docs]</a>  <span class="k">def</span> <span class="nf">extract_committed</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
     <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">aggregator</span><span class="o">.</span><span class="n">result</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">finished_committed</span><span class="p">)</span></div>

 <div class="viewcode-block" id="DirectMetric.extract_latest_attempted"><a class="viewcode-back" href="../../../../apache_beam.runners.direct.direct_metrics.html#apache_beam.runners.direct.direct_metrics.DirectMetric.extract_latest_attempted">[docs]</a>  <span class="k">def</span> <span class="nf">extract_latest_attempted</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
     <span class="n">res</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">finished_attempted</span>
     <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">u</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">inflight_attempted</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
       <span class="n">res</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">aggregator</span><span class="o">.</span><span class="n">combine</span><span class="p">(</span><span class="n">res</span><span class="p">,</span> <span class="n">u</span><span class="p">)</span>

     <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">aggregator</span><span class="o">.</span><span class="n">result</span><span class="p">(</span><span class="n">res</span><span class="p">)</span></div></div>
 </pre></div>

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