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| <h1>Source code for apache_beam.testing.benchmarks.nexmark.queries.query10</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 "License"); 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 "AS IS" 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">"""</span> |
| <span class="sd">Query 10, 'Log to sharded files' (Not in original suite.)</span> |
| |
| <span class="sd">Every window_size_sec, save all events from the last period into</span> |
| <span class="sd">2*max_workers log files.</span> |
| <span class="sd">"""</span> |
| |
| <span class="kn">import</span> <span class="nn">apache_beam</span> <span class="k">as</span> <span class="nn">beam</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.options.pipeline_options</span> <span class="kn">import</span> <span class="n">GoogleCloudOptions</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.transforms</span> <span class="kn">import</span> <span class="n">trigger</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.transforms</span> <span class="kn">import</span> <span class="n">window</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.utils.timestamp</span> <span class="kn">import</span> <span class="n">Duration</span> |
| |
| <span class="n">NUM_SHARD_PER_WORKER</span> <span class="o">=</span> <span class="mi">5</span> |
| <span class="n">LATE_BATCHING_PERIOD</span> <span class="o">=</span> <span class="mi">10</span> |
| |
| <span class="n">output_path</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="n">max_num_workers</span> <span class="o">=</span> <span class="mi">5</span> |
| |
| <span class="n">num_log_shards</span> <span class="o">=</span> <span class="n">NUM_SHARD_PER_WORKER</span> <span class="o">*</span> <span class="n">max_num_workers</span> |
| |
| |
| <div class="viewcode-block" id="OutputFile"><a class="viewcode-back" href="../../../../../../apache_beam.testing.benchmarks.nexmark.queries.query10.html#apache_beam.testing.benchmarks.nexmark.queries.query10.OutputFile">[docs]</a><span class="k">class</span> <span class="nc">OutputFile</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span> |
| <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">max_timestamp</span><span class="p">,</span> <span class="n">shard</span><span class="p">,</span> <span class="n">index</span><span class="p">,</span> <span class="n">timing</span><span class="p">,</span> <span class="n">filename</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">max_timestamp</span> <span class="o">=</span> <span class="n">max_timestamp</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">shard</span> <span class="o">=</span> <span class="n">shard</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">index</span> <span class="o">=</span> <span class="n">index</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">timing</span> <span class="o">=</span> <span class="n">timing</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">filename</span> <span class="o">=</span> <span class="n">filename</span></div> |
| |
| |
| <div class="viewcode-block" id="open_writable_gcs_file"><a class="viewcode-back" href="../../../../../../apache_beam.testing.benchmarks.nexmark.queries.query10.html#apache_beam.testing.benchmarks.nexmark.queries.query10.open_writable_gcs_file">[docs]</a><span class="k">def</span> <span class="nf">open_writable_gcs_file</span><span class="p">(</span><span class="n">options</span><span class="p">,</span> <span class="n">filename</span><span class="p">):</span> |
| <span class="c1"># TODO: [https://github.com/apache/beam/issues/20670] it seems that beam team</span> |
| <span class="c1"># has not yet decided about this method and it is left blank and</span> |
| <span class="c1"># unspecified.</span> |
| <span class="k">pass</span></div> |
| |
| |
| <div class="viewcode-block" id="output_file_for"><a class="viewcode-back" href="../../../../../../apache_beam.testing.benchmarks.nexmark.queries.query10.html#apache_beam.testing.benchmarks.nexmark.queries.query10.output_file_for">[docs]</a><span class="k">def</span> <span class="nf">output_file_for</span><span class="p">(</span><span class="n">window</span><span class="p">,</span> <span class="n">shard</span><span class="p">,</span> <span class="n">pane</span><span class="p">):</span> |
| <span class="w"> </span><span class="sd">"""</span> |
| <span class="sd"> Returns:</span> |
| <span class="sd"> an OutputFile object constructed with pane, window and shard.</span> |
| <span class="sd"> """</span> |
| <span class="n">filename</span> <span class="o">=</span> <span class="s1">'</span><span class="si">%s</span><span class="s1">/LOG-</span><span class="si">%s</span><span class="s1">-</span><span class="si">%s</span><span class="s1">-</span><span class="si">%03d</span><span class="s1">-</span><span class="si">%s</span><span class="s1">'</span> <span class="o">%</span> <span class="p">(</span> |
| <span class="n">output_path</span><span class="p">,</span> <span class="n">window</span><span class="o">.</span><span class="n">max_timestamp</span><span class="p">(),</span> <span class="n">shard</span><span class="p">,</span> <span class="n">pane</span><span class="o">.</span><span class="n">index</span><span class="p">,</span> |
| <span class="n">pane</span><span class="o">.</span><span class="n">timing</span><span class="p">)</span> <span class="k">if</span> <span class="n">output_path</span> <span class="k">else</span> <span class="kc">None</span> |
| <span class="k">return</span> <span class="n">OutputFile</span><span class="p">(</span> |
| <span class="n">window</span><span class="o">.</span><span class="n">max_timestamp</span><span class="p">(),</span> <span class="n">shard</span><span class="p">,</span> <span class="n">pane</span><span class="o">.</span><span class="n">index</span><span class="p">,</span> <span class="n">pane</span><span class="o">.</span><span class="n">timing</span><span class="p">,</span> <span class="n">filename</span><span class="p">)</span></div> |
| |
| |
| <div class="viewcode-block" id="index_path_for"><a class="viewcode-back" href="../../../../../../apache_beam.testing.benchmarks.nexmark.queries.query10.html#apache_beam.testing.benchmarks.nexmark.queries.query10.index_path_for">[docs]</a><span class="k">def</span> <span class="nf">index_path_for</span><span class="p">(</span><span class="n">window</span><span class="p">):</span> |
| <span class="w"> </span><span class="sd">"""</span> |
| <span class="sd"> Returns:</span> |
| <span class="sd"> path to the index file containing all shard names or None if no output_path</span> |
| <span class="sd"> is set</span> |
| <span class="sd"> """</span> |
| <span class="k">if</span> <span class="n">output_path</span><span class="p">:</span> |
| <span class="k">return</span> <span class="s1">'</span><span class="si">%s</span><span class="s1">/INDEX-</span><span class="si">%s</span><span class="s1">'</span> <span class="o">%</span> <span class="p">(</span><span class="n">output_path</span><span class="p">,</span> <span class="n">window</span><span class="o">.</span><span class="n">max_timestamp</span><span class="p">())</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="k">return</span> <span class="kc">None</span></div> |
| |
| |
| <div class="viewcode-block" id="load"><a class="viewcode-back" href="../../../../../../apache_beam.testing.benchmarks.nexmark.queries.query10.html#apache_beam.testing.benchmarks.nexmark.queries.query10.load">[docs]</a><span class="k">def</span> <span class="nf">load</span><span class="p">(</span><span class="n">events</span><span class="p">,</span> <span class="n">metadata</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">pipeline_options</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="k">return</span> <span class="p">(</span> |
| <span class="n">events</span> |
| <span class="o">|</span> <span class="s1">'query10_shard_events'</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">ParDo</span><span class="p">(</span><span class="n">ShardEventsDoFn</span><span class="p">())</span> |
| <span class="c1"># trigger fires when each sub-triger (executed in order) fires</span> |
| <span class="c1"># repeatedly 1. after at least maxLogEvents in pane</span> |
| <span class="c1"># 2. or finally when watermark pass the end of window</span> |
| <span class="c1"># Repeatedly 1. after at least maxLogEvents in pane</span> |
| <span class="c1"># 2. or processing time pass the first element in pane + delay</span> |
| <span class="o">|</span> <span class="s1">'query10_fix_window'</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">WindowInto</span><span class="p">(</span> |
| <span class="n">window</span><span class="o">.</span><span class="n">FixedWindows</span><span class="p">(</span><span class="n">metadata</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'window_size_sec'</span><span class="p">)),</span> |
| <span class="n">trigger</span><span class="o">=</span><span class="n">trigger</span><span class="o">.</span><span class="n">AfterEach</span><span class="p">(</span> |
| <span class="n">trigger</span><span class="o">.</span><span class="n">OrFinally</span><span class="p">(</span> |
| <span class="n">trigger</span><span class="o">.</span><span class="n">Repeatedly</span><span class="p">(</span> |
| <span class="n">trigger</span><span class="o">.</span><span class="n">AfterCount</span><span class="p">(</span><span class="n">metadata</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'max_log_events'</span><span class="p">))),</span> |
| <span class="n">trigger</span><span class="o">.</span><span class="n">AfterWatermark</span><span class="p">()),</span> |
| <span class="n">trigger</span><span class="o">.</span><span class="n">Repeatedly</span><span class="p">(</span> |
| <span class="n">trigger</span><span class="o">.</span><span class="n">AfterAny</span><span class="p">(</span> |
| <span class="n">trigger</span><span class="o">.</span><span class="n">AfterCount</span><span class="p">(</span><span class="n">metadata</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'max_log_events'</span><span class="p">)),</span> |
| <span class="n">trigger</span><span class="o">.</span><span class="n">AfterProcessingTime</span><span class="p">(</span><span class="n">LATE_BATCHING_PERIOD</span><span class="p">)))),</span> |
| <span class="n">accumulation_mode</span><span class="o">=</span><span class="n">trigger</span><span class="o">.</span><span class="n">AccumulationMode</span><span class="o">.</span><span class="n">DISCARDING</span><span class="p">,</span> |
| <span class="c1"># Use a 1 day allowed lateness so that any forgotten hold will stall</span> |
| <span class="c1"># the pipeline for that period and be very noticeable.</span> |
| <span class="n">allowed_lateness</span><span class="o">=</span><span class="n">Duration</span><span class="o">.</span><span class="n">of</span><span class="p">(</span><span class="mi">1</span> <span class="o">*</span> <span class="mi">24</span> <span class="o">*</span> <span class="mi">60</span> <span class="o">*</span> <span class="mi">60</span><span class="p">))</span> |
| <span class="o">|</span> <span class="s1">'query10_gbk'</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">GroupByKey</span><span class="p">()</span> |
| <span class="o">|</span> <span class="s1">'query10_write_event'</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">ParDo</span><span class="p">(</span><span class="n">WriteEventDoFn</span><span class="p">(),</span> <span class="n">pipeline_options</span><span class="p">)</span> |
| <span class="o">|</span> <span class="s1">'query10_window_log_files'</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">WindowInto</span><span class="p">(</span> |
| <span class="n">window</span><span class="o">.</span><span class="n">FixedWindows</span><span class="p">(</span><span class="n">metadata</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'window_size_sec'</span><span class="p">)),</span> |
| <span class="n">accumulation_mode</span><span class="o">=</span><span class="n">trigger</span><span class="o">.</span><span class="n">AccumulationMode</span><span class="o">.</span><span class="n">DISCARDING</span><span class="p">,</span> |
| <span class="n">allowed_lateness</span><span class="o">=</span><span class="n">Duration</span><span class="o">.</span><span class="n">of</span><span class="p">(</span><span class="mi">1</span> <span class="o">*</span> <span class="mi">24</span> <span class="o">*</span> <span class="mi">60</span> <span class="o">*</span> <span class="mi">60</span><span class="p">))</span> |
| <span class="o">|</span> <span class="s1">'query10_gbk_2'</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">GroupByKey</span><span class="p">()</span> |
| <span class="o">|</span> <span class="s1">'query10_write_index'</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">ParDo</span><span class="p">(</span><span class="n">WriteIndexDoFn</span><span class="p">(),</span> <span class="n">pipeline_options</span><span class="p">))</span></div> |
| |
| |
| <div class="viewcode-block" id="ShardEventsDoFn"><a class="viewcode-back" href="../../../../../../apache_beam.testing.benchmarks.nexmark.queries.query10.html#apache_beam.testing.benchmarks.nexmark.queries.query10.ShardEventsDoFn">[docs]</a><span class="k">class</span> <span class="nc">ShardEventsDoFn</span><span class="p">(</span><span class="n">beam</span><span class="o">.</span><span class="n">DoFn</span><span class="p">):</span> |
| <div class="viewcode-block" id="ShardEventsDoFn.process"><a class="viewcode-back" href="../../../../../../apache_beam.testing.benchmarks.nexmark.queries.query10.html#apache_beam.testing.benchmarks.nexmark.queries.query10.ShardEventsDoFn.process">[docs]</a> <span class="k">def</span> <span class="nf">process</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">element</span><span class="p">):</span> |
| <span class="n">shard_number</span> <span class="o">=</span> <span class="nb">abs</span><span class="p">(</span><span class="nb">hash</span><span class="p">(</span><span class="n">element</span><span class="p">)</span> <span class="o">%</span> <span class="n">num_log_shards</span><span class="p">)</span> |
| <span class="n">shard</span> <span class="o">=</span> <span class="s1">'shard-</span><span class="si">%05d</span><span class="s1">-of-</span><span class="si">%05d</span><span class="s1">'</span> <span class="o">%</span> <span class="p">(</span><span class="n">shard_number</span><span class="p">,</span> <span class="n">num_log_shards</span><span class="p">)</span> |
| <span class="k">yield</span> <span class="n">shard</span><span class="p">,</span> <span class="n">element</span></div></div> |
| |
| |
| <div class="viewcode-block" id="WriteEventDoFn"><a class="viewcode-back" href="../../../../../../apache_beam.testing.benchmarks.nexmark.queries.query10.html#apache_beam.testing.benchmarks.nexmark.queries.query10.WriteEventDoFn">[docs]</a><span class="k">class</span> <span class="nc">WriteEventDoFn</span><span class="p">(</span><span class="n">beam</span><span class="o">.</span><span class="n">DoFn</span><span class="p">):</span> |
| <div class="viewcode-block" id="WriteEventDoFn.process"><a class="viewcode-back" href="../../../../../../apache_beam.testing.benchmarks.nexmark.queries.query10.html#apache_beam.testing.benchmarks.nexmark.queries.query10.WriteEventDoFn.process">[docs]</a> <span class="k">def</span> <span class="nf">process</span><span class="p">(</span> |
| <span class="bp">self</span><span class="p">,</span> |
| <span class="n">element</span><span class="p">,</span> |
| <span class="n">pipeline_options</span><span class="p">,</span> |
| <span class="n">window</span><span class="o">=</span><span class="n">beam</span><span class="o">.</span><span class="n">DoFn</span><span class="o">.</span><span class="n">WindowParam</span><span class="p">,</span> |
| <span class="n">pane_info</span><span class="o">=</span><span class="n">beam</span><span class="o">.</span><span class="n">DoFn</span><span class="o">.</span><span class="n">PaneInfoParam</span><span class="p">):</span> |
| <span class="n">shard</span> <span class="o">=</span> <span class="n">element</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> |
| <span class="n">options</span> <span class="o">=</span> <span class="n">pipeline_options</span><span class="o">.</span><span class="n">view_as</span><span class="p">(</span><span class="n">GoogleCloudOptions</span><span class="p">)</span> |
| <span class="n">output_file</span> <span class="o">=</span> <span class="n">output_file_for</span><span class="p">(</span><span class="n">window</span><span class="p">,</span> <span class="n">shard</span><span class="p">,</span> <span class="n">pane_info</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">output_file</span><span class="o">.</span><span class="n">filename</span><span class="p">:</span> |
| <span class="c1"># not do anything because open_writable_gcs_file does not do anything</span> |
| <span class="n">open_writable_gcs_file</span><span class="p">(</span><span class="n">options</span><span class="p">,</span> <span class="n">output_file</span><span class="o">.</span><span class="n">filename</span><span class="p">)</span> |
| <span class="k">for</span> <span class="n">event</span> <span class="ow">in</span> <span class="n">element</span><span class="p">[</span><span class="mi">1</span><span class="p">]:</span> <span class="c1"># pylint: disable=unused-variable</span> |
| <span class="c1"># write to file</span> |
| <span class="k">pass</span> |
| <span class="k">yield</span> <span class="kc">None</span><span class="p">,</span> <span class="n">output_file</span></div></div> |
| |
| |
| <div class="viewcode-block" id="WriteIndexDoFn"><a class="viewcode-back" href="../../../../../../apache_beam.testing.benchmarks.nexmark.queries.query10.html#apache_beam.testing.benchmarks.nexmark.queries.query10.WriteIndexDoFn">[docs]</a><span class="k">class</span> <span class="nc">WriteIndexDoFn</span><span class="p">(</span><span class="n">beam</span><span class="o">.</span><span class="n">DoFn</span><span class="p">):</span> |
| <div class="viewcode-block" id="WriteIndexDoFn.process"><a class="viewcode-back" href="../../../../../../apache_beam.testing.benchmarks.nexmark.queries.query10.html#apache_beam.testing.benchmarks.nexmark.queries.query10.WriteIndexDoFn.process">[docs]</a> <span class="k">def</span> <span class="nf">process</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">element</span><span class="p">,</span> <span class="n">pipeline_options</span><span class="p">,</span> <span class="n">window</span><span class="o">=</span><span class="n">beam</span><span class="o">.</span><span class="n">DoFn</span><span class="o">.</span><span class="n">WindowParam</span><span class="p">):</span> |
| <span class="n">options</span> <span class="o">=</span> <span class="n">pipeline_options</span><span class="o">.</span><span class="n">view_as</span><span class="p">(</span><span class="n">GoogleCloudOptions</span><span class="p">)</span> |
| <span class="n">filename</span> <span class="o">=</span> <span class="n">index_path_for</span><span class="p">(</span><span class="n">window</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">filename</span><span class="p">:</span> |
| <span class="c1"># not do anything because open_writable_gcs_file does not do anything</span> |
| <span class="n">open_writable_gcs_file</span><span class="p">(</span><span class="n">options</span><span class="p">,</span> <span class="n">filename</span><span class="p">)</span> |
| <span class="k">for</span> <span class="n">output_file</span> <span class="ow">in</span> <span class="n">element</span><span class="p">[</span><span class="mi">1</span><span class="p">]:</span> <span class="c1"># pylint: disable=unused-variable</span> |
| <span class="c1"># write to file</span> |
| <span class="k">pass</span></div></div> |
| </pre></div> |
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