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| <h1>Source code for apache_beam.testing.synthetic_pipeline</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">"""A set of utilities to write pipelines for performance tests.</span> |
| |
| <span class="sd">This module offers a way to create pipelines using synthetic sources and steps.</span> |
| <span class="sd">Exact shape of the pipeline and the behaviour of sources and steps can be</span> |
| <span class="sd">controlled through arguments. Please see function 'parse_args()' for more</span> |
| <span class="sd">details about the arguments.</span> |
| |
| <span class="sd">Shape of the pipeline is primariy controlled through two arguments. Argument</span> |
| <span class="sd">'steps' can be used to define a list of steps as a JSON string. Argument</span> |
| <span class="sd">'barrier' describes how these steps are separated from each other. Argument</span> |
| <span class="sd">'barrier' can be use to build a pipeline as a a series of steps or a tree of</span> |
| <span class="sd">steps with a fanin or a fanout of size 2.</span> |
| |
| <span class="sd">Other arguments describe what gets generated by synthetic sources that produce</span> |
| <span class="sd">data for the pipeline.</span> |
| <span class="sd">"""</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">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">division</span> |
| |
| <span class="kn">import</span> <span class="nn">argparse</span> |
| <span class="kn">import</span> <span class="nn">json</span> |
| <span class="kn">import</span> <span class="nn">logging</span> |
| <span class="kn">import</span> <span class="nn">math</span> |
| <span class="kn">import</span> <span class="nn">time</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.io</span> <span class="k">import</span> <span class="n">WriteToText</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.io</span> <span class="k">import</span> <span class="n">iobase</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.io</span> <span class="k">import</span> <span class="n">range_trackers</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.options.pipeline_options</span> <span class="k">import</span> <span class="n">PipelineOptions</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.options.pipeline_options</span> <span class="k">import</span> <span class="n">SetupOptions</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.testing.test_pipeline</span> <span class="k">import</span> <span class="n">TestPipeline</span> |
| |
| <span class="k">try</span><span class="p">:</span> |
| <span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span> |
| <span class="k">except</span> <span class="ne">ImportError</span><span class="p">:</span> |
| <span class="n">np</span> <span class="o">=</span> <span class="kc">None</span> |
| |
| |
| <div class="viewcode-block" id="parse_byte_size"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.parse_byte_size">[docs]</a><span class="k">def</span> <span class="nf">parse_byte_size</span><span class="p">(</span><span class="n">s</span><span class="p">):</span> |
| <span class="n">suffixes</span> <span class="o">=</span> <span class="s1">'BKMGTP'</span> |
| <span class="k">if</span> <span class="n">s</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="ow">in</span> <span class="n">suffixes</span><span class="p">:</span> |
| <span class="k">return</span> <span class="nb">int</span><span class="p">(</span><span class="nb">float</span><span class="p">(</span><span class="n">s</span><span class="p">[:</span><span class="o">-</span><span class="mi">1</span><span class="p">])</span> <span class="o">*</span> <span class="mi">1024</span><span class="o">**</span><span class="n">suffixes</span><span class="o">.</span><span class="n">index</span><span class="p">(</span><span class="n">s</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]))</span> |
| |
| <span class="k">return</span> <span class="nb">int</span><span class="p">(</span><span class="n">s</span><span class="p">)</span></div> |
| |
| |
| <div class="viewcode-block" id="div_round_up"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.div_round_up">[docs]</a><span class="k">def</span> <span class="nf">div_round_up</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> |
| <span class="sd">"""Return ceil(a/b)."""</span> |
| <span class="k">return</span> <span class="nb">int</span><span class="p">(</span><span class="n">math</span><span class="o">.</span><span class="n">ceil</span><span class="p">(</span><span class="nb">float</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> <span class="o">/</span> <span class="n">b</span><span class="p">))</span></div> |
| |
| |
| <div class="viewcode-block" id="rotate_key"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.rotate_key">[docs]</a><span class="k">def</span> <span class="nf">rotate_key</span><span class="p">(</span><span class="n">element</span><span class="p">):</span> |
| <span class="sd">"""Returns a new key-value pair of the same size but with a different key."""</span> |
| <span class="p">(</span><span class="n">key</span><span class="p">,</span> <span class="n">value</span><span class="p">)</span> <span class="o">=</span> <span class="n">element</span> |
| <span class="k">return</span> <span class="n">key</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="o">+</span> <span class="n">key</span><span class="p">[:</span><span class="o">-</span><span class="mi">1</span><span class="p">],</span> <span class="n">value</span></div> |
| |
| |
| <div class="viewcode-block" id="SyntheticStep"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.SyntheticStep">[docs]</a><span class="k">class</span> <span class="nc">SyntheticStep</span><span class="p">(</span><span class="n">beam</span><span class="o">.</span><span class="n">DoFn</span><span class="p">):</span> |
| <span class="sd">"""A DoFn of which behavior can be controlled through prespecified parameters.</span> |
| <span class="sd"> """</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">per_element_delay_sec</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span> <span class="n">per_bundle_delay_sec</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span> |
| <span class="n">output_records_per_input_record</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">output_filter_ratio</span><span class="o">=</span><span class="mi">0</span><span class="p">):</span> |
| <span class="k">if</span> <span class="n">per_element_delay_sec</span> <span class="ow">and</span> <span class="n">per_element_delay_sec</span> <span class="o"><</span> <span class="mf">1e-3</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s1">'Per element sleep time must be at least 1e-3. '</span> |
| <span class="s1">'Received: </span><span class="si">%r</span><span class="s1">'</span><span class="p">,</span> <span class="n">per_element_delay_sec</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_per_element_delay_sec</span> <span class="o">=</span> <span class="n">per_element_delay_sec</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_per_bundle_delay_sec</span> <span class="o">=</span> <span class="n">per_bundle_delay_sec</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_output_records_per_input_record</span> <span class="o">=</span> <span class="n">output_records_per_input_record</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_output_filter_ratio</span> <span class="o">=</span> <span class="n">output_filter_ratio</span> |
| |
| <div class="viewcode-block" id="SyntheticStep.start_bundle"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.SyntheticStep.start_bundle">[docs]</a> <span class="k">def</span> <span class="nf">start_bundle</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">_start_time</span> <span class="o">=</span> <span class="n">time</span><span class="o">.</span><span class="n">time</span><span class="p">()</span></div> |
| |
| <div class="viewcode-block" id="SyntheticStep.finish_bundle"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.SyntheticStep.finish_bundle">[docs]</a> <span class="k">def</span> <span class="nf">finish_bundle</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="c1"># The target is for the enclosing stage to take as close to as possible</span> |
| <span class="c1"># the given number of seconds, so we only sleep enough to make up for</span> |
| <span class="c1"># overheads not incurred elsewhere.</span> |
| <span class="n">to_sleep</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_per_bundle_delay_sec</span> <span class="o">-</span> <span class="p">(</span><span class="n">time</span><span class="o">.</span><span class="n">time</span><span class="p">()</span> <span class="o">-</span> <span class="bp">self</span><span class="o">.</span><span class="n">_start_time</span><span class="p">)</span> |
| |
| <span class="c1"># Ignoring sub-millisecond sleep times.</span> |
| <span class="k">if</span> <span class="n">to_sleep</span> <span class="o">>=</span> <span class="mf">1e-3</span><span class="p">:</span> |
| <span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="n">to_sleep</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="SyntheticStep.process"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.SyntheticStep.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="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_per_element_delay_sec</span> <span class="o">>=</span> <span class="mf">1e-3</span><span class="p">:</span> |
| <span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_per_element_delay_sec</span><span class="p">)</span> |
| <span class="n">filter_element</span> <span class="o">=</span> <span class="kc">False</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_output_filter_ratio</span> <span class="o">></span> <span class="mi">0</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">random</span><span class="p">()</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">_output_filter_ratio</span><span class="p">:</span> |
| <span class="n">filter_element</span> <span class="o">=</span> <span class="kc">True</span> |
| |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">filter_element</span><span class="p">:</span> |
| <span class="k">for</span> <span class="n">_</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_output_records_per_input_record</span><span class="p">):</span> |
| <span class="k">yield</span> <span class="n">element</span></div></div> |
| |
| |
| <div class="viewcode-block" id="SyntheticSource"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.SyntheticSource">[docs]</a><span class="k">class</span> <span class="nc">SyntheticSource</span><span class="p">(</span><span class="n">iobase</span><span class="o">.</span><span class="n">BoundedSource</span><span class="p">):</span> |
| <span class="sd">"""A custom source of a specified size.</span> |
| <span class="sd"> """</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">input_spec</span><span class="p">):</span> |
| <span class="sd">"""Initiates a synthetic source.</span> |
| |
| <span class="sd"> Args:</span> |
| <span class="sd"> input_spec: Input specification of the source. See corresponding option in</span> |
| <span class="sd"> function 'parse_args()' below for more details.</span> |
| <span class="sd"> Raises:</span> |
| <span class="sd"> ValueError: if input parameters are invalid.</span> |
| <span class="sd"> """</span> |
| |
| <span class="k">def</span> <span class="nf">maybe_parse_byte_size</span><span class="p">(</span><span class="n">s</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">parse_byte_size</span><span class="p">(</span><span class="n">s</span><span class="p">)</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">s</span><span class="p">,</span> <span class="nb">str</span><span class="p">)</span> <span class="k">else</span> <span class="nb">int</span><span class="p">(</span><span class="n">s</span><span class="p">)</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">_num_records</span> <span class="o">=</span> <span class="n">input_spec</span><span class="p">[</span><span class="s1">'numRecords'</span><span class="p">]</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_key_size</span> <span class="o">=</span> <span class="n">maybe_parse_byte_size</span><span class="p">(</span><span class="n">input_spec</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'keySizeBytes'</span><span class="p">,</span> <span class="mi">1</span><span class="p">))</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_value_size</span> <span class="o">=</span> <span class="n">maybe_parse_byte_size</span><span class="p">(</span> |
| <span class="n">input_spec</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'valueSizeBytes'</span><span class="p">,</span> <span class="mi">1</span><span class="p">))</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_total_size</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">element_size</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">_num_records</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_initial_splitting</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="n">input_spec</span><span class="p">[</span><span class="s1">'bundleSizeDistribution'</span><span class="p">][</span><span class="s1">'type'</span><span class="p">]</span> |
| <span class="k">if</span> <span class="s1">'bundleSizeDistribution'</span> <span class="ow">in</span> <span class="n">input_spec</span> <span class="k">else</span> <span class="s1">'const'</span><span class="p">)</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_initial_splitting</span> <span class="o">!=</span> <span class="s1">'const'</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_initial_splitting</span> <span class="o">!=</span> <span class="s1">'zipf'</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span> |
| <span class="s1">'Only const and zipf distributions are supported for determining '</span> |
| <span class="s1">'sizes of bundles produced by initial splitting. Received: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_initial_splitting</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_initial_splitting_num_bundles</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="n">input_spec</span><span class="p">[</span><span class="s1">'forceNumInitialBundles'</span><span class="p">]</span> |
| <span class="k">if</span> <span class="s1">'forceNumInitialBundles'</span> <span class="ow">in</span> <span class="n">input_spec</span> <span class="k">else</span> <span class="mi">0</span><span class="p">)</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_initial_splitting</span> <span class="o">==</span> <span class="s1">'zipf'</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_initial_splitting_distribution_parameter</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="n">input_spec</span><span class="p">[</span><span class="s1">'bundleSizeDistribution'</span><span class="p">][</span><span class="s1">'param'</span><span class="p">])</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_initial_splitting_distribution_parameter</span> <span class="o"><</span> <span class="mi">1</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span> |
| <span class="s1">'Parameter for a Zipf distribution must be larger than 1. '</span> |
| <span class="s1">'Received </span><span class="si">%r</span><span class="s1">.'</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_initial_splitting_distribution_parameter</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_initial_splitting_distribution_parameter</span> <span class="o">=</span> <span class="mi">0</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_dynamic_splitting</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="s1">'none'</span> <span class="k">if</span> <span class="p">(</span> |
| <span class="s1">'splitPointFrequencyRecords'</span> <span class="ow">in</span> <span class="n">input_spec</span> |
| <span class="ow">and</span> <span class="n">input_spec</span><span class="p">[</span><span class="s1">'splitPointFrequencyRecords'</span><span class="p">]</span> <span class="o">==</span> <span class="mi">0</span><span class="p">)</span> |
| <span class="k">else</span> <span class="s1">'perfect'</span><span class="p">)</span> |
| <span class="k">if</span> <span class="s1">'delayDistribution'</span> <span class="ow">in</span> <span class="n">input_spec</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">input_spec</span><span class="p">[</span><span class="s1">'delayDistribution'</span><span class="p">][</span><span class="s1">'type'</span><span class="p">]</span> <span class="o">!=</span> <span class="s1">'const'</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s1">'SyntheticSource currently only supports delay '</span> |
| <span class="s1">'distributions of type </span><span class="se">\'</span><span class="s1">const</span><span class="se">\'</span><span class="s1">. Received </span><span class="si">%s</span><span class="s1">.'</span><span class="p">,</span> |
| <span class="n">input_spec</span><span class="p">[</span><span class="s1">'delayDistribution'</span><span class="p">][</span><span class="s1">'type'</span><span class="p">])</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_sleep_per_input_record_sec</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="nb">float</span><span class="p">(</span><span class="n">input_spec</span><span class="p">[</span><span class="s1">'delayDistribution'</span><span class="p">][</span><span class="s1">'const'</span><span class="p">])</span> <span class="o">/</span> <span class="mi">1000</span><span class="p">)</span> |
| <span class="k">if</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_sleep_per_input_record_sec</span> <span class="ow">and</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_sleep_per_input_record_sec</span> <span class="o"><</span> <span class="mf">1e-3</span><span class="p">):</span> |
| <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s1">'Sleep time per input record must be at least 1e-3.'</span> |
| <span class="s1">' Received: </span><span class="si">%r</span><span class="s1">'</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_sleep_per_input_record_sec</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_sleep_per_input_record_sec</span> <span class="o">=</span> <span class="mi">0</span> |
| |
| <span class="nd">@property</span> |
| <span class="k">def</span> <span class="nf">element_size</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">_key_size</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">_value_size</span> |
| |
| <div class="viewcode-block" id="SyntheticSource.estimate_size"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.SyntheticSource.estimate_size">[docs]</a> <span class="k">def</span> <span class="nf">estimate_size</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">_total_size</span></div> |
| |
| <div class="viewcode-block" id="SyntheticSource.split"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.SyntheticSource.split">[docs]</a> <span class="k">def</span> <span class="nf">split</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">desired_bundle_size</span><span class="p">,</span> <span class="n">start_position</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span> <span class="n">stop_position</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="c1"># Performs initial splitting of SyntheticSource.</span> |
| <span class="c1">#</span> |
| <span class="c1"># Exact sizes and distribution of initial splits generated here depends on</span> |
| <span class="c1"># the input specification of the SyntheticSource.</span> |
| |
| <span class="k">if</span> <span class="n">stop_position</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="n">stop_position</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_num_records</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_initial_splitting</span> <span class="o">==</span> <span class="s1">'zipf'</span><span class="p">:</span> |
| <span class="n">desired_num_bundles</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_initial_splitting_num_bundles</span> <span class="ow">or</span> <span class="n">math</span><span class="o">.</span><span class="n">ceil</span><span class="p">(</span> |
| <span class="nb">float</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">estimate_size</span><span class="p">())</span> <span class="o">/</span> <span class="n">desired_bundle_size</span><span class="p">)</span> |
| <span class="n">samples</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">zipf</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_initial_splitting_distribution_parameter</span><span class="p">,</span> |
| <span class="n">desired_num_bundles</span><span class="p">)</span> |
| <span class="n">total</span> <span class="o">=</span> <span class="nb">sum</span><span class="p">(</span><span class="n">samples</span><span class="p">)</span> |
| <span class="n">relative_bundle_sizes</span> <span class="o">=</span> <span class="p">[(</span><span class="nb">float</span><span class="p">(</span><span class="n">sample</span><span class="p">)</span> <span class="o">/</span> <span class="n">total</span><span class="p">)</span> <span class="k">for</span> <span class="n">sample</span> <span class="ow">in</span> <span class="n">samples</span><span class="p">]</span> |
| <span class="n">bundle_ranges</span> <span class="o">=</span> <span class="p">[]</span> |
| <span class="n">start</span> <span class="o">=</span> <span class="n">start_position</span> |
| <span class="n">index</span> <span class="o">=</span> <span class="mi">0</span> |
| <span class="k">while</span> <span class="n">start</span> <span class="o"><</span> <span class="n">stop_position</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">index</span> <span class="o">==</span> <span class="n">desired_num_bundles</span> <span class="o">-</span> <span class="mi">1</span><span class="p">:</span> |
| <span class="n">bundle_ranges</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="n">start</span><span class="p">,</span> <span class="n">stop_position</span><span class="p">))</span> |
| <span class="k">break</span> |
| <span class="n">stop</span> <span class="o">=</span> <span class="n">start</span> <span class="o">+</span> <span class="nb">int</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_num_records</span> <span class="o">*</span> <span class="n">relative_bundle_sizes</span><span class="p">[</span><span class="n">index</span><span class="p">])</span> |
| <span class="n">bundle_ranges</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="n">start</span><span class="p">,</span> <span class="n">stop</span><span class="p">))</span> |
| <span class="n">start</span> <span class="o">=</span> <span class="n">stop</span> |
| <span class="n">index</span> <span class="o">+=</span> <span class="mi">1</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_initial_splitting_num_bundles</span><span class="p">:</span> |
| <span class="n">bundle_size_in_elements</span> <span class="o">=</span> <span class="nb">max</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_num_records</span> <span class="o">/</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_initial_splitting_num_bundles</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">bundle_size_in_elements</span> <span class="o">=</span> <span class="p">(</span><span class="nb">max</span><span class="p">(</span> |
| <span class="n">div_round_up</span><span class="p">(</span><span class="n">desired_bundle_size</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">element_size</span><span class="p">),</span> |
| <span class="n">math</span><span class="o">.</span><span class="n">floor</span><span class="p">(</span><span class="n">math</span><span class="o">.</span><span class="n">sqrt</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_num_records</span><span class="p">))))</span> |
| <span class="n">bundle_ranges</span> <span class="o">=</span> <span class="p">[]</span> |
| <span class="k">for</span> <span class="n">start</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">start_position</span><span class="p">,</span> <span class="n">stop_position</span><span class="p">,</span> |
| <span class="n">bundle_size_in_elements</span><span class="p">):</span> |
| <span class="n">stop</span> <span class="o">=</span> <span class="nb">min</span><span class="p">(</span><span class="n">start</span> <span class="o">+</span> <span class="n">bundle_size_in_elements</span><span class="p">,</span> <span class="n">stop_position</span><span class="p">)</span> |
| <span class="n">bundle_ranges</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="n">start</span><span class="p">,</span> <span class="n">stop</span><span class="p">))</span> |
| |
| <span class="k">for</span> <span class="n">start</span><span class="p">,</span> <span class="n">stop</span> <span class="ow">in</span> <span class="n">bundle_ranges</span><span class="p">:</span> |
| <span class="k">yield</span> <span class="n">iobase</span><span class="o">.</span><span class="n">SourceBundle</span><span class="p">(</span><span class="n">stop</span> <span class="o">-</span> <span class="n">start</span><span class="p">,</span> <span class="bp">self</span><span class="p">,</span> <span class="n">start</span><span class="p">,</span> <span class="n">stop</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="SyntheticSource.get_range_tracker"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.SyntheticSource.get_range_tracker">[docs]</a> <span class="k">def</span> <span class="nf">get_range_tracker</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">start_position</span><span class="p">,</span> <span class="n">stop_position</span><span class="p">):</span> |
| <span class="k">if</span> <span class="n">start_position</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="n">start_position</span> <span class="o">=</span> <span class="mi">0</span> |
| <span class="k">if</span> <span class="n">stop_position</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="n">stop_position</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_num_records</span> |
| <span class="n">tracker</span> <span class="o">=</span> <span class="n">range_trackers</span><span class="o">.</span><span class="n">OffsetRangeTracker</span><span class="p">(</span><span class="n">start_position</span><span class="p">,</span> <span class="n">stop_position</span><span class="p">)</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_dynamic_splitting</span> <span class="o">==</span> <span class="s1">'none'</span><span class="p">:</span> |
| <span class="n">tracker</span> <span class="o">=</span> <span class="n">range_trackers</span><span class="o">.</span><span class="n">UnsplittableRangeTracker</span><span class="p">(</span><span class="n">tracker</span><span class="p">)</span> |
| <span class="k">return</span> <span class="n">tracker</span></div> |
| |
| <div class="viewcode-block" id="SyntheticSource.read"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.SyntheticSource.read">[docs]</a> <span class="k">def</span> <span class="nf">read</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">range_tracker</span><span class="p">):</span> |
| <span class="n">index</span> <span class="o">=</span> <span class="n">range_tracker</span><span class="o">.</span><span class="n">start_position</span><span class="p">()</span> |
| <span class="k">while</span> <span class="n">range_tracker</span><span class="o">.</span><span class="n">try_claim</span><span class="p">(</span><span class="n">index</span><span class="p">):</span> |
| <span class="n">r</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">RandomState</span><span class="p">(</span><span class="n">index</span><span class="p">)</span> |
| |
| <span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_sleep_per_input_record_sec</span><span class="p">)</span> |
| <span class="k">yield</span> <span class="n">r</span><span class="o">.</span><span class="n">bytes</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_key_size</span><span class="p">),</span> <span class="n">r</span><span class="o">.</span><span class="n">bytes</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_value_size</span><span class="p">)</span> |
| <span class="n">index</span> <span class="o">+=</span> <span class="mi">1</span></div> |
| |
| <div class="viewcode-block" id="SyntheticSource.default_output_coder"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.SyntheticSource.default_output_coder">[docs]</a> <span class="k">def</span> <span class="nf">default_output_coder</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">beam</span><span class="o">.</span><span class="n">coders</span><span class="o">.</span><span class="n">TupleCoder</span><span class="p">(</span> |
| <span class="p">[</span><span class="n">beam</span><span class="o">.</span><span class="n">coders</span><span class="o">.</span><span class="n">BytesCoder</span><span class="p">(),</span> <span class="n">beam</span><span class="o">.</span><span class="n">coders</span><span class="o">.</span><span class="n">BytesCoder</span><span class="p">()])</span></div></div> |
| |
| |
| <div class="viewcode-block" id="ShuffleBarrier"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.ShuffleBarrier">[docs]</a><span class="k">class</span> <span class="nc">ShuffleBarrier</span><span class="p">(</span><span class="n">beam</span><span class="o">.</span><span class="n">PTransform</span><span class="p">):</span> |
| |
| <div class="viewcode-block" id="ShuffleBarrier.expand"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.ShuffleBarrier.expand">[docs]</a> <span class="k">def</span> <span class="nf">expand</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">pc</span><span class="p">):</span> |
| <span class="k">return</span> <span class="p">(</span><span class="n">pc</span> |
| <span class="o">|</span> <span class="n">beam</span><span class="o">.</span><span class="n">Map</span><span class="p">(</span><span class="n">rotate_key</span><span class="p">)</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">'Ungroup'</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">FlatMap</span><span class="p">(</span> |
| <span class="k">lambda</span> <span class="n">elm</span><span class="p">:</span> <span class="p">[(</span><span class="n">elm</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">v</span><span class="p">)</span> <span class="k">for</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">elm</span><span class="p">[</span><span class="mi">1</span><span class="p">]]))</span></div></div> |
| |
| |
| <div class="viewcode-block" id="SideInputBarrier"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.SideInputBarrier">[docs]</a><span class="k">class</span> <span class="nc">SideInputBarrier</span><span class="p">(</span><span class="n">beam</span><span class="o">.</span><span class="n">PTransform</span><span class="p">):</span> |
| |
| <div class="viewcode-block" id="SideInputBarrier.expand"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.SideInputBarrier.expand">[docs]</a> <span class="k">def</span> <span class="nf">expand</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">pc</span><span class="p">):</span> |
| <span class="k">return</span> <span class="p">(</span><span class="n">pc</span> |
| <span class="o">|</span> <span class="n">beam</span><span class="o">.</span><span class="n">Map</span><span class="p">(</span><span class="n">rotate_key</span><span class="p">)</span> |
| <span class="o">|</span> <span class="n">beam</span><span class="o">.</span><span class="n">Map</span><span class="p">(</span> |
| <span class="k">lambda</span> <span class="n">elem</span><span class="p">,</span> <span class="n">ignored</span><span class="p">:</span> <span class="n">elem</span><span class="p">,</span> |
| <span class="n">beam</span><span class="o">.</span><span class="n">pvalue</span><span class="o">.</span><span class="n">AsIter</span><span class="p">(</span><span class="n">pc</span> <span class="o">|</span> <span class="n">beam</span><span class="o">.</span><span class="n">FlatMap</span><span class="p">(</span><span class="k">lambda</span> <span class="n">elem</span><span class="p">:</span> <span class="kc">None</span><span class="p">))))</span></div></div> |
| |
| |
| <div class="viewcode-block" id="merge_using_gbk"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.merge_using_gbk">[docs]</a><span class="k">def</span> <span class="nf">merge_using_gbk</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">pc1</span><span class="p">,</span> <span class="n">pc2</span><span class="p">):</span> |
| <span class="sd">"""Merges two given PCollections using a CoGroupByKey."""</span> |
| |
| <span class="n">pc1_with_key</span> <span class="o">=</span> <span class="n">pc1</span> <span class="o">|</span> <span class="p">(</span><span class="n">name</span> <span class="o">+</span> <span class="s1">'AttachKey1'</span><span class="p">)</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">Map</span><span class="p">(</span><span class="k">lambda</span> <span class="n">x</span><span class="p">:</span> <span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">x</span><span class="p">))</span> |
| <span class="n">pc2_with_key</span> <span class="o">=</span> <span class="n">pc2</span> <span class="o">|</span> <span class="p">(</span><span class="n">name</span> <span class="o">+</span> <span class="s1">'AttachKey2'</span><span class="p">)</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">Map</span><span class="p">(</span><span class="k">lambda</span> <span class="n">x</span><span class="p">:</span> <span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">x</span><span class="p">))</span> |
| |
| <span class="n">grouped</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="p">{</span><span class="s1">'pc1'</span><span class="p">:</span> <span class="n">pc1_with_key</span><span class="p">,</span> <span class="s1">'pc2'</span><span class="p">:</span> <span class="n">pc2_with_key</span><span class="p">}</span> <span class="o">|</span> |
| <span class="p">(</span><span class="n">name</span> <span class="o">+</span> <span class="s1">'Group'</span><span class="p">)</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">CoGroupByKey</span><span class="p">())</span> |
| <span class="k">return</span> <span class="p">(</span><span class="n">grouped</span> <span class="o">|</span> |
| <span class="p">(</span><span class="n">name</span> <span class="o">+</span> <span class="s1">'DeDup'</span><span class="p">)</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">Map</span><span class="p">(</span><span class="k">lambda</span> <span class="n">elm</span><span class="p">:</span> <span class="n">elm</span><span class="p">[</span><span class="mi">0</span><span class="p">]))</span> <span class="c1"># Ignoring values</span></div> |
| |
| |
| <div class="viewcode-block" id="merge_using_side_input"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.merge_using_side_input">[docs]</a><span class="k">def</span> <span class="nf">merge_using_side_input</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">pc1</span><span class="p">,</span> <span class="n">pc2</span><span class="p">):</span> |
| <span class="sd">"""Merges two given PCollections using side inputs."""</span> |
| |
| <span class="k">def</span> <span class="nf">join_fn</span><span class="p">(</span><span class="n">val</span><span class="p">,</span> <span class="n">_</span><span class="p">):</span> <span class="c1"># Ignoring side input</span> |
| <span class="k">return</span> <span class="n">val</span> |
| |
| <span class="k">return</span> <span class="n">pc1</span> <span class="o">|</span> <span class="n">name</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">core</span><span class="o">.</span><span class="n">Map</span><span class="p">(</span><span class="n">join_fn</span><span class="p">,</span> <span class="n">beam</span><span class="o">.</span><span class="n">pvalue</span><span class="o">.</span><span class="n">AsIter</span><span class="p">(</span><span class="n">pc2</span><span class="p">))</span></div> |
| |
| |
| <div class="viewcode-block" id="expand_using_gbk"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.expand_using_gbk">[docs]</a><span class="k">def</span> <span class="nf">expand_using_gbk</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">pc</span><span class="p">):</span> |
| <span class="sd">"""Expands a given PCollection into two copies using GroupByKey."""</span> |
| |
| <span class="n">ret</span> <span class="o">=</span> <span class="p">[]</span> |
| <span class="n">ret</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="n">pc</span> <span class="o">|</span> <span class="p">(</span><span class="s1">'</span><span class="si">%s</span><span class="s1">.a'</span> <span class="o">%</span> <span class="n">name</span><span class="p">)</span> <span class="o">>></span> <span class="n">ShuffleBarrier</span><span class="p">()))</span> |
| <span class="n">ret</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="n">pc</span> <span class="o">|</span> <span class="p">(</span><span class="s1">'</span><span class="si">%s</span><span class="s1">.b'</span> <span class="o">%</span> <span class="n">name</span><span class="p">)</span> <span class="o">>></span> <span class="n">ShuffleBarrier</span><span class="p">()))</span> |
| <span class="k">return</span> <span class="n">ret</span></div> |
| |
| |
| <div class="viewcode-block" id="expand_using_second_output"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.expand_using_second_output">[docs]</a><span class="k">def</span> <span class="nf">expand_using_second_output</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">pc</span><span class="p">):</span> |
| <span class="sd">"""Expands a given PCollection into two copies using side outputs."""</span> |
| |
| <span class="k">class</span> <span class="nc">ExpandFn</span><span class="p">(</span><span class="n">beam</span><span class="o">.</span><span class="n">DoFn</span><span class="p">):</span> |
| |
| <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="k">yield</span> <span class="n">beam</span><span class="o">.</span><span class="n">pvalue</span><span class="o">.</span><span class="n">TaggedOutput</span><span class="p">(</span><span class="s1">'second_out'</span><span class="p">,</span> <span class="n">element</span><span class="p">)</span> |
| <span class="k">yield</span> <span class="n">element</span> |
| |
| <span class="n">pc1</span><span class="p">,</span> <span class="n">pc2</span> <span class="o">=</span> <span class="p">(</span><span class="n">pc</span> <span class="o">|</span> <span class="n">name</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">ExpandFn</span><span class="p">())</span><span class="o">.</span><span class="n">with_outputs</span><span class="p">(</span><span class="s1">'second_out'</span><span class="p">,</span> <span class="n">main</span><span class="o">=</span><span class="s1">'main_out'</span><span class="p">))</span> |
| <span class="k">return</span> <span class="p">[</span><span class="n">pc1</span><span class="p">,</span> <span class="n">pc2</span><span class="p">]</span></div> |
| |
| |
| <span class="k">def</span> <span class="nf">_parse_steps</span><span class="p">(</span><span class="n">json_str</span><span class="p">):</span> |
| <span class="sd">"""Converts the JSON step description into Python objects.</span> |
| |
| <span class="sd"> See property 'steps' for more details about the JSON step description.</span> |
| |
| <span class="sd"> Args:</span> |
| <span class="sd"> json_str: a JSON string that describes the steps.</span> |
| |
| <span class="sd"> Returns:</span> |
| <span class="sd"> Information about steps as a list of dictionaries. Each dictionary may have</span> |
| <span class="sd"> following properties.</span> |
| <span class="sd"> (1) per_element_delay - amount of delay for each element in seconds.</span> |
| <span class="sd"> (2) per_bundle_delay - minimum amount of delay for a given step in seconds.</span> |
| <span class="sd"> (3) output_records_per_input_record - number of output elements generated</span> |
| <span class="sd"> for each input element to a step.</span> |
| <span class="sd"> (4) output_filter_ratio - the probability at which a step may filter out a</span> |
| <span class="sd"> given element by not producing any output for that element.</span> |
| <span class="sd"> """</span> |
| <span class="n">all_steps</span> <span class="o">=</span> <span class="p">[]</span> |
| <span class="n">json_data</span> <span class="o">=</span> <span class="n">json</span><span class="o">.</span><span class="n">loads</span><span class="p">(</span><span class="n">json_str</span><span class="p">)</span> |
| <span class="k">for</span> <span class="n">val</span> <span class="ow">in</span> <span class="n">json_data</span><span class="p">:</span> |
| <span class="n">steps</span> <span class="o">=</span> <span class="p">{}</span> |
| <span class="n">steps</span><span class="p">[</span><span class="s1">'per_element_delay'</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="p">(</span><span class="nb">float</span><span class="p">(</span><span class="n">val</span><span class="p">[</span><span class="s1">'per_element_delay_msec'</span><span class="p">])</span> <span class="o">/</span> <span class="mi">1000</span><span class="p">)</span> |
| <span class="k">if</span> <span class="s1">'per_element_delay_msec'</span> <span class="ow">in</span> <span class="n">val</span> <span class="k">else</span> <span class="mi">0</span><span class="p">)</span> |
| <span class="n">steps</span><span class="p">[</span><span class="s1">'per_bundle_delay'</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="nb">float</span><span class="p">(</span><span class="n">val</span><span class="p">[</span><span class="s1">'per_bundle_delay_sec'</span><span class="p">])</span> |
| <span class="k">if</span> <span class="s1">'per_bundle_delay_sec'</span> <span class="ow">in</span> <span class="n">val</span> <span class="k">else</span> <span class="mi">0</span><span class="p">)</span> |
| <span class="n">steps</span><span class="p">[</span><span class="s1">'output_records_per_input_record'</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="nb">int</span><span class="p">(</span><span class="n">val</span><span class="p">[</span><span class="s1">'output_records_per_input_record'</span><span class="p">])</span> |
| <span class="k">if</span> <span class="s1">'output_records_per_input_record'</span> <span class="ow">in</span> <span class="n">val</span> <span class="k">else</span> <span class="mi">1</span><span class="p">)</span> |
| <span class="n">steps</span><span class="p">[</span><span class="s1">'output_filter_ratio'</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="nb">float</span><span class="p">(</span><span class="n">val</span><span class="p">[</span><span class="s1">'output_filter_ratio'</span><span class="p">])</span> |
| <span class="k">if</span> <span class="s1">'output_filter_ratio'</span> <span class="ow">in</span> <span class="n">val</span> <span class="k">else</span> <span class="mi">0</span><span class="p">)</span> |
| <span class="n">all_steps</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">steps</span><span class="p">)</span> |
| |
| <span class="k">return</span> <span class="n">all_steps</span> |
| |
| |
| <div class="viewcode-block" id="parse_args"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.parse_args">[docs]</a><span class="k">def</span> <span class="nf">parse_args</span><span class="p">(</span><span class="n">args</span><span class="p">):</span> |
| <span class="sd">"""Parses a given set of arguments.</span> |
| |
| <span class="sd"> Args:</span> |
| <span class="sd"> args: set of arguments to be passed.</span> |
| |
| <span class="sd"> Returns:</span> |
| <span class="sd"> a tuple where first item gives the set of arguments defined and parsed</span> |
| <span class="sd"> within this method and second item gives the set of unknown arguments.</span> |
| <span class="sd"> """</span> |
| |
| <span class="n">parser</span> <span class="o">=</span> <span class="n">argparse</span><span class="o">.</span><span class="n">ArgumentParser</span><span class="p">()</span> |
| <span class="n">parser</span><span class="o">.</span><span class="n">add_argument</span><span class="p">(</span> |
| <span class="s1">'--steps'</span><span class="p">,</span> |
| <span class="n">dest</span><span class="o">=</span><span class="s1">'steps'</span><span class="p">,</span> |
| <span class="nb">type</span><span class="o">=</span><span class="n">_parse_steps</span><span class="p">,</span> |
| <span class="n">help</span><span class="o">=</span><span class="s1">'A JSON string that gives a list where each entry of the list is '</span> |
| <span class="s1">'configuration information for a step. Configuration for each step '</span> |
| <span class="s1">'consists of '</span> |
| <span class="s1">'(1) A float "per_bundle_delay_sec" (in seconds). Defaults to 0.'</span> |
| <span class="s1">'(2) A float "per_element_delay_msec" (in milli seconds). '</span> |
| <span class="s1">' Defaults to 0.'</span> |
| <span class="s1">'(3) An integer "output_records_per_input_record". Defaults to 1.'</span> |
| <span class="s1">'(4) A float "output_filter_ratio" in the range [0, 1] . '</span> |
| <span class="s1">' Defaults to 0.'</span><span class="p">)</span> |
| |
| <span class="n">parser</span><span class="o">.</span><span class="n">add_argument</span><span class="p">(</span> |
| <span class="s1">'--input'</span><span class="p">,</span> |
| <span class="n">dest</span><span class="o">=</span><span class="s1">'input'</span><span class="p">,</span> |
| <span class="nb">type</span><span class="o">=</span><span class="n">json</span><span class="o">.</span><span class="n">loads</span><span class="p">,</span> |
| <span class="n">help</span><span class="o">=</span><span class="s1">'A JSON string that describes the properties of the SyntheticSource '</span> |
| <span class="s1">'used by the pipeline. Configuration is similar to Java '</span> |
| <span class="s1">'SyntheticBoundedInput.'</span> |
| <span class="s1">'Currently supports following properties. '</span> |
| <span class="s1">'(1) An integer "numRecords". '</span> |
| <span class="s1">'(2) An integer "keySize". '</span> |
| <span class="s1">'(3) An integer "valueSize". '</span> |
| <span class="s1">'(4) A tuple "bundleSizeDistribution" with following values. '</span> |
| <span class="s1">' A string "type". Allowed values are "const" and "zipf". '</span> |
| <span class="s1">' An float "param". Only used if "type"=="zipf". Must be '</span> |
| <span class="s1">' larger than 1. '</span> |
| <span class="s1">'(5) An integer "forceNumInitialBundles". '</span> |
| <span class="s1">'(6) An integer "splitPointFrequencyRecords". '</span> |
| <span class="s1">'(7) A tuple "delayDistribution" with following values. '</span> |
| <span class="s1">' A string "type". Only allowed value is "const". '</span> |
| <span class="s1">' An integer "const". '</span><span class="p">)</span> |
| |
| <span class="n">parser</span><span class="o">.</span><span class="n">add_argument</span><span class="p">(</span><span class="s1">'--barrier'</span><span class="p">,</span> |
| <span class="n">dest</span><span class="o">=</span><span class="s1">'barrier'</span><span class="p">,</span> |
| <span class="n">default</span><span class="o">=</span><span class="s1">'shuffle'</span><span class="p">,</span> |
| <span class="n">choices</span><span class="o">=</span><span class="p">[</span><span class="s1">'shuffle'</span><span class="p">,</span> <span class="s1">'side-input'</span><span class="p">,</span> <span class="s1">'expand-gbk'</span><span class="p">,</span> |
| <span class="s1">'expand-second-output'</span><span class="p">,</span> <span class="s1">'merge-gbk'</span><span class="p">,</span> |
| <span class="s1">'merge-side-input'</span><span class="p">],</span> |
| <span class="n">help</span><span class="o">=</span><span class="s1">'Whether to use shuffle as the barrier '</span> |
| <span class="s1">'(as opposed to side inputs).'</span><span class="p">)</span> |
| <span class="n">parser</span><span class="o">.</span><span class="n">add_argument</span><span class="p">(</span><span class="s1">'--output'</span><span class="p">,</span> |
| <span class="n">dest</span><span class="o">=</span><span class="s1">'output'</span><span class="p">,</span> |
| <span class="n">default</span><span class="o">=</span><span class="s1">''</span><span class="p">,</span> |
| <span class="n">help</span><span class="o">=</span><span class="s1">'Destination to write output.'</span><span class="p">)</span> |
| |
| <span class="k">return</span> <span class="n">parser</span><span class="o">.</span><span class="n">parse_known_args</span><span class="p">(</span><span class="n">args</span><span class="p">)</span></div> |
| |
| |
| <div class="viewcode-block" id="run"><a class="viewcode-back" href="../../../apache_beam.testing.synthetic_pipeline.html#apache_beam.testing.synthetic_pipeline.run">[docs]</a><span class="k">def</span> <span class="nf">run</span><span class="p">(</span><span class="n">argv</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""Runs the workflow."""</span> |
| <span class="n">known_args</span><span class="p">,</span> <span class="n">pipeline_args</span> <span class="o">=</span> <span class="n">parse_args</span><span class="p">(</span><span class="n">argv</span><span class="p">)</span> |
| |
| <span class="n">pipeline_options</span> <span class="o">=</span> <span class="n">PipelineOptions</span><span class="p">(</span><span class="n">pipeline_args</span><span class="p">)</span> |
| <span class="n">pipeline_options</span><span class="o">.</span><span class="n">view_as</span><span class="p">(</span><span class="n">SetupOptions</span><span class="p">)</span><span class="o">.</span><span class="n">save_main_session</span> <span class="o">=</span> <span class="kc">True</span> |
| |
| <span class="n">input_info</span> <span class="o">=</span> <span class="n">known_args</span><span class="o">.</span><span class="n">input</span> |
| |
| <span class="k">with</span> <span class="n">TestPipeline</span><span class="p">(</span><span class="n">options</span><span class="o">=</span><span class="n">pipeline_options</span><span class="p">)</span> <span class="k">as</span> <span class="n">p</span><span class="p">:</span> |
| <span class="n">source</span> <span class="o">=</span> <span class="n">SyntheticSource</span><span class="p">(</span><span class="n">input_info</span><span class="p">)</span> |
| |
| <span class="c1"># pylint: disable=expression-not-assigned</span> |
| <span class="n">barrier</span> <span class="o">=</span> <span class="n">known_args</span><span class="o">.</span><span class="n">barrier</span> |
| |
| <span class="n">pc_list</span> <span class="o">=</span> <span class="p">[]</span> |
| <span class="n">num_roots</span> <span class="o">=</span> <span class="mi">2</span> <span class="o">**</span> <span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">known_args</span><span class="o">.</span><span class="n">steps</span><span class="p">)</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span> |
| <span class="n">barrier</span> <span class="o">==</span> <span class="s1">'merge-gbk'</span> <span class="ow">or</span> <span class="n">barrier</span> <span class="o">==</span> <span class="s1">'merge-side-input'</span><span class="p">)</span> <span class="k">else</span> <span class="mi">1</span> |
| <span class="k">for</span> <span class="n">read_no</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">num_roots</span><span class="p">):</span> |
| <span class="n">pc_list</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="n">p</span> <span class="o">|</span> <span class="p">(</span><span class="s1">'Read </span><span class="si">%d</span><span class="s1">'</span> <span class="o">%</span> <span class="n">read_no</span><span class="p">)</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">io</span><span class="o">.</span><span class="n">Read</span><span class="p">(</span><span class="n">source</span><span class="p">)))</span> |
| |
| <span class="k">for</span> <span class="n">step_no</span><span class="p">,</span> <span class="n">steps</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">known_args</span><span class="o">.</span><span class="n">steps</span><span class="p">):</span> |
| <span class="k">if</span> <span class="n">step_no</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">:</span> |
| <span class="n">new_pc_list</span> <span class="o">=</span> <span class="p">[]</span> |
| <span class="k">for</span> <span class="n">pc_no</span><span class="p">,</span> <span class="n">pc</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">pc_list</span><span class="p">):</span> |
| <span class="k">if</span> <span class="n">barrier</span> <span class="o">==</span> <span class="s1">'shuffle'</span><span class="p">:</span> |
| <span class="n">new_pc_list</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> |
| <span class="p">(</span><span class="n">pc</span> <span class="o">|</span> |
| <span class="p">(</span><span class="s1">'shuffle </span><span class="si">%d</span><span class="s1">.</span><span class="si">%d</span><span class="s1">'</span> <span class="o">%</span> <span class="p">(</span><span class="n">step_no</span><span class="p">,</span> <span class="n">pc_no</span><span class="p">))</span> <span class="o">>></span> <span class="n">ShuffleBarrier</span><span class="p">()))</span> |
| <span class="k">elif</span> <span class="n">barrier</span> <span class="o">==</span> <span class="s1">'side-input'</span><span class="p">:</span> |
| <span class="n">new_pc_list</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> |
| <span class="p">(</span><span class="n">pc</span> <span class="o">|</span> |
| <span class="p">(</span><span class="s1">'side-input </span><span class="si">%d</span><span class="s1">.</span><span class="si">%d</span><span class="s1">'</span> <span class="o">%</span> <span class="p">(</span><span class="n">step_no</span><span class="p">,</span> <span class="n">pc_no</span><span class="p">))</span> <span class="o">>></span> <span class="n">SideInputBarrier</span><span class="p">()))</span> |
| <span class="k">elif</span> <span class="n">barrier</span> <span class="o">==</span> <span class="s1">'expand-gbk'</span><span class="p">:</span> |
| <span class="n">new_pc_list</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span> |
| <span class="n">expand_using_gbk</span><span class="p">((</span><span class="s1">'expand-gbk </span><span class="si">%d</span><span class="s1">.</span><span class="si">%d</span><span class="s1">'</span> <span class="o">%</span> <span class="p">(</span><span class="n">step_no</span><span class="p">,</span> <span class="n">pc_no</span><span class="p">)),</span> <span class="n">pc</span><span class="p">))</span> |
| <span class="k">elif</span> <span class="n">barrier</span> <span class="o">==</span> <span class="s1">'expand-second-output'</span><span class="p">:</span> |
| <span class="n">new_pc_list</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span> |
| <span class="n">expand_using_second_output</span><span class="p">(</span> |
| <span class="p">(</span><span class="s1">'expand-second-output </span><span class="si">%d</span><span class="s1">.</span><span class="si">%d</span><span class="s1">'</span> <span class="o">%</span> <span class="p">(</span><span class="n">step_no</span><span class="p">,</span> <span class="n">pc_no</span><span class="p">)),</span> <span class="n">pc</span><span class="p">))</span> |
| <span class="k">elif</span> <span class="n">barrier</span> <span class="o">==</span> <span class="s1">'merge-gbk'</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">pc_no</span> <span class="o">%</span> <span class="mi">2</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span> |
| <span class="n">new_pc_list</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> |
| <span class="n">merge_using_gbk</span><span class="p">((</span><span class="s1">'merge-gbk </span><span class="si">%d</span><span class="s1">.</span><span class="si">%d</span><span class="s1">'</span> <span class="o">%</span> <span class="p">(</span><span class="n">step_no</span><span class="p">,</span> <span class="n">pc_no</span><span class="p">)),</span> |
| <span class="n">pc</span><span class="p">,</span> <span class="n">pc_list</span><span class="p">[</span><span class="n">pc_no</span> <span class="o">+</span> <span class="mi">1</span><span class="p">]))</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="k">continue</span> |
| <span class="k">elif</span> <span class="n">barrier</span> <span class="o">==</span> <span class="s1">'merge-side-input'</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">pc_no</span> <span class="o">%</span> <span class="mi">2</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span> |
| <span class="n">new_pc_list</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> |
| <span class="n">merge_using_side_input</span><span class="p">(</span> |
| <span class="p">(</span><span class="s1">'merge-side-input </span><span class="si">%d</span><span class="s1">.</span><span class="si">%d</span><span class="s1">'</span> <span class="o">%</span> <span class="p">(</span><span class="n">step_no</span><span class="p">,</span> <span class="n">pc_no</span><span class="p">)),</span> |
| <span class="n">pc</span><span class="p">,</span> <span class="n">pc_list</span><span class="p">[</span><span class="n">pc_no</span> <span class="o">+</span> <span class="mi">1</span><span class="p">]))</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="k">continue</span> |
| |
| <span class="n">pc_list</span> <span class="o">=</span> <span class="n">new_pc_list</span> |
| |
| <span class="n">new_pc_list</span> <span class="o">=</span> <span class="p">[]</span> |
| <span class="k">for</span> <span class="n">pc_no</span><span class="p">,</span> <span class="n">pc</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">pc_list</span><span class="p">):</span> |
| <span class="n">new_pc</span> <span class="o">=</span> <span class="n">pc</span> <span class="o">|</span> <span class="s1">'SyntheticStep </span><span class="si">%d</span><span class="s1">.</span><span class="si">%d</span><span class="s1">'</span> <span class="o">%</span> <span class="p">(</span><span class="n">step_no</span><span class="p">,</span> <span class="n">pc_no</span><span class="p">)</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">SyntheticStep</span><span class="p">(</span> |
| <span class="n">per_element_delay_sec</span><span class="o">=</span><span class="n">steps</span><span class="p">[</span><span class="s1">'per_element_delay'</span><span class="p">],</span> |
| <span class="n">per_bundle_delay_sec</span><span class="o">=</span><span class="n">steps</span><span class="p">[</span><span class="s1">'per_bundle_delay'</span><span class="p">],</span> |
| <span class="n">output_records_per_input_record</span><span class="o">=</span> |
| <span class="n">steps</span><span class="p">[</span><span class="s1">'output_records_per_input_record'</span><span class="p">],</span> |
| <span class="n">output_filter_ratio</span><span class="o">=</span> |
| <span class="n">steps</span><span class="p">[</span><span class="s1">'output_filter_ratio'</span><span class="p">]))</span> |
| <span class="n">new_pc_list</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">new_pc</span><span class="p">)</span> |
| <span class="n">pc_list</span> <span class="o">=</span> <span class="n">new_pc_list</span> |
| |
| <span class="k">if</span> <span class="n">known_args</span><span class="o">.</span><span class="n">output</span><span class="p">:</span> |
| <span class="c1"># If an output location is provided we format and write output.</span> |
| <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">pc_list</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> |
| <span class="p">(</span><span class="n">pc_list</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">|</span> |
| <span class="s1">'FormatOutput'</span> <span class="o">>></span> <span class="n">beam</span><span class="o">.</span><span class="n">Map</span><span class="p">(</span><span class="k">lambda</span> <span class="n">elm</span><span class="p">:</span> <span class="p">(</span><span class="n">elm</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">+</span> <span class="n">elm</span><span class="p">[</span><span class="mi">1</span><span class="p">]))</span> <span class="o">|</span> |
| <span class="s1">'WriteOutput'</span> <span class="o">>></span> <span class="n">WriteToText</span><span class="p">(</span><span class="n">known_args</span><span class="o">.</span><span class="n">output</span><span class="p">))</span> |
| |
| <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s1">'Pipeline run completed.'</span><span class="p">)</span></div> |
| |
| |
| <span class="k">if</span> <span class="vm">__name__</span> <span class="o">==</span> <span class="s1">'__main__'</span><span class="p">:</span> |
| <span class="n">logging</span><span class="o">.</span><span class="n">getLogger</span><span class="p">()</span><span class="o">.</span><span class="n">setLevel</span><span class="p">(</span><span class="n">logging</span><span class="o">.</span><span class="n">INFO</span><span class="p">)</span> |
| <span class="n">run</span><span class="p">()</span> |
| </pre></div> |
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