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| <h1>Source code for apache_beam.runners.direct.direct_runner</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">"""DirectRunner, executing on the local machine.</span> |
| |
| <span class="sd">The DirectRunner is a runner implementation that executes the entire</span> |
| <span class="sd">graph of transformations belonging to a pipeline on the local machine.</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">import</span> <span class="nn">itertools</span> |
| <span class="kn">import</span> <span class="nn">logging</span> |
| <span class="kn">import</span> <span class="nn">time</span> |
| <span class="kn">import</span> <span class="nn">typing</span> |
| |
| <span class="kn">from</span> <span class="nn">google.protobuf</span> <span class="k">import</span> <span class="n">wrappers_pb2</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</span> <span class="k">import</span> <span class="n">coders</span> |
| <span class="kn">from</span> <span class="nn">apache_beam</span> <span class="k">import</span> <span class="n">typehints</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.internal.util</span> <span class="k">import</span> <span class="n">ArgumentPlaceholder</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.options.pipeline_options</span> <span class="k">import</span> <span class="n">DirectOptions</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.options.pipeline_options</span> <span class="k">import</span> <span class="n">StandardOptions</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.options.value_provider</span> <span class="k">import</span> <span class="n">RuntimeValueProvider</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.pvalue</span> <span class="k">import</span> <span class="n">PCollection</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.runners.direct.bundle_factory</span> <span class="k">import</span> <span class="n">BundleFactory</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.runners.direct.clock</span> <span class="k">import</span> <span class="n">RealClock</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.runners.direct.clock</span> <span class="k">import</span> <span class="n">TestClock</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.runners.runner</span> <span class="k">import</span> <span class="n">PipelineResult</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.runners.runner</span> <span class="k">import</span> <span class="n">PipelineRunner</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.runners.runner</span> <span class="k">import</span> <span class="n">PipelineState</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.transforms.core</span> <span class="k">import</span> <span class="n">CombinePerKey</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.transforms.core</span> <span class="k">import</span> <span class="n">CombineValuesDoFn</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.transforms.core</span> <span class="k">import</span> <span class="n">DoFn</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.transforms.core</span> <span class="k">import</span> <span class="n">ParDo</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.transforms.core</span> <span class="k">import</span> <span class="n">_GroupAlsoByWindow</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.transforms.core</span> <span class="k">import</span> <span class="n">_GroupAlsoByWindowDoFn</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.transforms.core</span> <span class="k">import</span> <span class="n">_GroupByKeyOnly</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.transforms.ptransform</span> <span class="k">import</span> <span class="n">PTransform</span> |
| |
| <span class="c1"># Note that the BundleBasedDirectRunner and SwitchingDirectRunner names are</span> |
| <span class="c1"># experimental and have no backwards compatibility guarantees.</span> |
| <span class="n">__all__</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'BundleBasedDirectRunner'</span><span class="p">,</span> |
| <span class="s1">'DirectRunner'</span><span class="p">,</span> |
| <span class="s1">'SwitchingDirectRunner'</span><span class="p">]</span> |
| |
| |
| <div class="viewcode-block" id="SwitchingDirectRunner"><a class="viewcode-back" href="../../../../apache_beam.runners.direct.direct_runner.html#apache_beam.runners.direct.direct_runner.SwitchingDirectRunner">[docs]</a><span class="k">class</span> <span class="nc">SwitchingDirectRunner</span><span class="p">(</span><span class="n">PipelineRunner</span><span class="p">):</span> |
| <span class="sd">"""Executes a single pipeline on the local machine.</span> |
| |
| <span class="sd"> This implementation switches between using the FnApiRunner (which has</span> |
| <span class="sd"> high throughput for batch jobs) and using the BundleBasedDirectRunner,</span> |
| <span class="sd"> which supports streaming execution and certain primitives not yet</span> |
| <span class="sd"> implemented in the FnApiRunner.</span> |
| <span class="sd"> """</span> |
| |
| <div class="viewcode-block" id="SwitchingDirectRunner.run_pipeline"><a class="viewcode-back" href="../../../../apache_beam.runners.direct.direct_runner.html#apache_beam.runners.direct.direct_runner.SwitchingDirectRunner.run_pipeline">[docs]</a> <span class="k">def</span> <span class="nf">run_pipeline</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">pipeline</span><span class="p">,</span> <span class="n">options</span><span class="p">):</span> |
| |
| <span class="kn">from</span> <span class="nn">apache_beam.pipeline</span> <span class="k">import</span> <span class="n">PipelineVisitor</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.runners.dataflow.native_io.iobase</span> <span class="k">import</span> <span class="n">NativeSource</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.runners.dataflow.native_io.iobase</span> <span class="k">import</span> <span class="n">_NativeWrite</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.testing.test_stream</span> <span class="k">import</span> <span class="n">TestStream</span> |
| |
| <span class="k">class</span> <span class="nc">_FnApiRunnerSupportVisitor</span><span class="p">(</span><span class="n">PipelineVisitor</span><span class="p">):</span> |
| <span class="sd">"""Visitor determining if a Pipeline can be run on the FnApiRunner."""</span> |
| |
| <span class="k">def</span> <span class="nf">accept</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">pipeline</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">supported_by_fnapi_runner</span> <span class="o">=</span> <span class="kc">True</span> |
| <span class="n">pipeline</span><span class="o">.</span><span class="n">visit</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">supported_by_fnapi_runner</span> |
| |
| <span class="k">def</span> <span class="nf">visit_transform</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">applied_ptransform</span><span class="p">):</span> |
| <span class="n">transform</span> <span class="o">=</span> <span class="n">applied_ptransform</span><span class="o">.</span><span class="n">transform</span> |
| <span class="c1"># The FnApiRunner does not support streaming execution.</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">transform</span><span class="p">,</span> <span class="n">TestStream</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">supported_by_fnapi_runner</span> <span class="o">=</span> <span class="kc">False</span> |
| <span class="c1"># The FnApiRunner does not support reads from NativeSources.</span> |
| <span class="k">if</span> <span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">transform</span><span class="p">,</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="ow">and</span> |
| <span class="nb">isinstance</span><span class="p">(</span><span class="n">transform</span><span class="o">.</span><span class="n">source</span><span class="p">,</span> <span class="n">NativeSource</span><span class="p">)):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">supported_by_fnapi_runner</span> <span class="o">=</span> <span class="kc">False</span> |
| <span class="c1"># The FnApiRunner does not support the use of _NativeWrites.</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">transform</span><span class="p">,</span> <span class="n">_NativeWrite</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">supported_by_fnapi_runner</span> <span class="o">=</span> <span class="kc">False</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">transform</span><span class="p">,</span> <span class="n">beam</span><span class="o">.</span><span class="n">ParDo</span><span class="p">):</span> |
| <span class="n">dofn</span> <span class="o">=</span> <span class="n">transform</span><span class="o">.</span><span class="n">dofn</span> |
| <span class="c1"># The FnApiRunner does not support execution of CombineFns with</span> |
| <span class="c1"># deferred side inputs.</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">dofn</span><span class="p">,</span> <span class="n">CombineValuesDoFn</span><span class="p">):</span> |
| <span class="n">args</span><span class="p">,</span> <span class="n">kwargs</span> <span class="o">=</span> <span class="n">transform</span><span class="o">.</span><span class="n">raw_side_inputs</span> |
| <span class="n">args_to_check</span> <span class="o">=</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="n">args</span><span class="p">,</span> |
| <span class="n">kwargs</span><span class="o">.</span><span class="n">values</span><span class="p">())</span> |
| <span class="k">if</span> <span class="nb">any</span><span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">arg</span><span class="p">,</span> <span class="n">ArgumentPlaceholder</span><span class="p">)</span> |
| <span class="k">for</span> <span class="n">arg</span> <span class="ow">in</span> <span class="n">args_to_check</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">supported_by_fnapi_runner</span> <span class="o">=</span> <span class="kc">False</span> |
| |
| <span class="c1"># Check whether all transforms used in the pipeline are supported by the</span> |
| <span class="c1"># FnApiRunner, and the pipeline was not meant to be run as streaming.</span> |
| <span class="n">use_fnapi_runner</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="n">_FnApiRunnerSupportVisitor</span><span class="p">()</span><span class="o">.</span><span class="n">accept</span><span class="p">(</span><span class="n">pipeline</span><span class="p">))</span> |
| |
| <span class="c1"># Also ensure grpc is available.</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="c1"># pylint: disable=unused-variable</span> |
| <span class="kn">import</span> <span class="nn">grpc</span> |
| <span class="k">except</span> <span class="ne">ImportError</span><span class="p">:</span> |
| <span class="n">use_fnapi_runner</span> <span class="o">=</span> <span class="kc">False</span> |
| |
| <span class="k">if</span> <span class="n">use_fnapi_runner</span><span class="p">:</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.runners.portability.fn_api_runner</span> <span class="k">import</span> <span class="n">FnApiRunner</span> |
| <span class="n">runner</span> <span class="o">=</span> <span class="n">FnApiRunner</span><span class="p">()</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">runner</span> <span class="o">=</span> <span class="n">BundleBasedDirectRunner</span><span class="p">()</span> |
| |
| <span class="k">return</span> <span class="n">runner</span><span class="o">.</span><span class="n">run_pipeline</span><span class="p">(</span><span class="n">pipeline</span><span class="p">,</span> <span class="n">options</span><span class="p">)</span></div></div> |
| |
| |
| <span class="c1"># Type variables.</span> |
| <span class="n">K</span> <span class="o">=</span> <span class="n">typing</span><span class="o">.</span><span class="n">TypeVar</span><span class="p">(</span><span class="s1">'K'</span><span class="p">)</span> |
| <span class="n">V</span> <span class="o">=</span> <span class="n">typing</span><span class="o">.</span><span class="n">TypeVar</span><span class="p">(</span><span class="s1">'V'</span><span class="p">)</span> |
| |
| |
| <span class="nd">@typehints</span><span class="o">.</span><span class="n">with_input_types</span><span class="p">(</span><span class="n">typing</span><span class="o">.</span><span class="n">Tuple</span><span class="p">[</span><span class="n">K</span><span class="p">,</span> <span class="n">V</span><span class="p">])</span> |
| <span class="nd">@typehints</span><span class="o">.</span><span class="n">with_output_types</span><span class="p">(</span><span class="n">typing</span><span class="o">.</span><span class="n">Tuple</span><span class="p">[</span><span class="n">K</span><span class="p">,</span> <span class="n">typing</span><span class="o">.</span><span class="n">Iterable</span><span class="p">[</span><span class="n">V</span><span class="p">]])</span> |
| <span class="k">class</span> <span class="nc">_StreamingGroupByKeyOnly</span><span class="p">(</span><span class="n">_GroupByKeyOnly</span><span class="p">):</span> |
| <span class="sd">"""Streaming GroupByKeyOnly placeholder for overriding in DirectRunner."""</span> |
| <span class="n">urn</span> <span class="o">=</span> <span class="s2">"direct_runner:streaming_gbko:v0.1"</span> |
| |
| <span class="c1"># These are needed due to apply overloads.</span> |
| <span class="k">def</span> <span class="nf">to_runner_api_parameter</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">unused_context</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">_StreamingGroupByKeyOnly</span><span class="o">.</span><span class="n">urn</span><span class="p">,</span> <span class="kc">None</span> |
| |
| <span class="nd">@PTransform</span><span class="o">.</span><span class="n">register_urn</span><span class="p">(</span><span class="n">urn</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> |
| <span class="k">def</span> <span class="nf">from_runner_api_parameter</span><span class="p">(</span><span class="n">unused_payload</span><span class="p">,</span> <span class="n">unused_context</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">_StreamingGroupByKeyOnly</span><span class="p">()</span> |
| |
| |
| <span class="nd">@typehints</span><span class="o">.</span><span class="n">with_input_types</span><span class="p">(</span><span class="n">typing</span><span class="o">.</span><span class="n">Tuple</span><span class="p">[</span><span class="n">K</span><span class="p">,</span> <span class="n">typing</span><span class="o">.</span><span class="n">Iterable</span><span class="p">[</span><span class="n">V</span><span class="p">]])</span> |
| <span class="nd">@typehints</span><span class="o">.</span><span class="n">with_output_types</span><span class="p">(</span><span class="n">typing</span><span class="o">.</span><span class="n">Tuple</span><span class="p">[</span><span class="n">K</span><span class="p">,</span> <span class="n">typing</span><span class="o">.</span><span class="n">Iterable</span><span class="p">[</span><span class="n">V</span><span class="p">]])</span> |
| <span class="k">class</span> <span class="nc">_StreamingGroupAlsoByWindow</span><span class="p">(</span><span class="n">_GroupAlsoByWindow</span><span class="p">):</span> |
| <span class="sd">"""Streaming GroupAlsoByWindow placeholder for overriding in DirectRunner."""</span> |
| <span class="n">urn</span> <span class="o">=</span> <span class="s2">"direct_runner:streaming_gabw:v0.1"</span> |
| |
| <span class="c1"># These are needed due to apply overloads.</span> |
| <span class="k">def</span> <span class="nf">to_runner_api_parameter</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">context</span><span class="p">):</span> |
| <span class="k">return</span> <span class="p">(</span> |
| <span class="n">_StreamingGroupAlsoByWindow</span><span class="o">.</span><span class="n">urn</span><span class="p">,</span> |
| <span class="n">wrappers_pb2</span><span class="o">.</span><span class="n">BytesValue</span><span class="p">(</span><span class="n">value</span><span class="o">=</span><span class="n">context</span><span class="o">.</span><span class="n">windowing_strategies</span><span class="o">.</span><span class="n">get_id</span><span class="p">(</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">windowing</span><span class="p">)))</span> |
| |
| <span class="nd">@PTransform</span><span class="o">.</span><span class="n">register_urn</span><span class="p">(</span><span class="n">urn</span><span class="p">,</span> <span class="n">wrappers_pb2</span><span class="o">.</span><span class="n">BytesValue</span><span class="p">)</span> |
| <span class="k">def</span> <span class="nf">from_runner_api_parameter</span><span class="p">(</span><span class="n">payload</span><span class="p">,</span> <span class="n">context</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">_StreamingGroupAlsoByWindow</span><span class="p">(</span> |
| <span class="n">context</span><span class="o">.</span><span class="n">windowing_strategies</span><span class="o">.</span><span class="n">get_by_id</span><span class="p">(</span><span class="n">payload</span><span class="o">.</span><span class="n">value</span><span class="p">))</span> |
| |
| |
| <span class="k">def</span> <span class="nf">_get_transform_overrides</span><span class="p">(</span><span class="n">pipeline_options</span><span class="p">):</span> |
| <span class="c1"># A list of PTransformOverride objects to be applied before running a pipeline</span> |
| <span class="c1"># using DirectRunner.</span> |
| <span class="c1"># Currently this only works for overrides where the input and output types do</span> |
| <span class="c1"># not change.</span> |
| <span class="c1"># For internal use only; no backwards-compatibility guarantees.</span> |
| |
| <span class="c1"># Importing following locally to avoid a circular dependency.</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.pipeline</span> <span class="k">import</span> <span class="n">PTransformOverride</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.runners.sdf_common</span> <span class="k">import</span> <span class="n">SplittableParDoOverride</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.runners.direct.helper_transforms</span> <span class="k">import</span> <span class="n">LiftedCombinePerKey</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.runners.direct.sdf_direct_runner</span> <span class="k">import</span> <span class="n">ProcessKeyedElementsViaKeyedWorkItemsOverride</span> |
| |
| <span class="k">class</span> <span class="nc">CombinePerKeyOverride</span><span class="p">(</span><span class="n">PTransformOverride</span><span class="p">):</span> |
| <span class="k">def</span> <span class="nf">matches</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">applied_ptransform</span><span class="p">):</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">applied_ptransform</span><span class="o">.</span><span class="n">transform</span><span class="p">,</span> <span class="n">CombinePerKey</span><span class="p">):</span> |
| <span class="k">return</span> <span class="kc">True</span> |
| |
| <span class="k">def</span> <span class="nf">get_replacement_transform</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">transform</span><span class="p">):</span> |
| <span class="c1"># TODO: Move imports to top. Pipeline <-> Runner dependency cause problems</span> |
| <span class="c1"># with resolving imports when they are at top.</span> |
| <span class="c1"># pylint: disable=wrong-import-position</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">LiftedCombinePerKey</span><span class="p">(</span><span class="n">transform</span><span class="o">.</span><span class="n">fn</span><span class="p">,</span> <span class="n">transform</span><span class="o">.</span><span class="n">args</span><span class="p">,</span> |
| <span class="n">transform</span><span class="o">.</span><span class="n">kwargs</span><span class="p">)</span> |
| <span class="k">except</span> <span class="ne">NotImplementedError</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">transform</span> |
| |
| <span class="k">class</span> <span class="nc">StreamingGroupByKeyOverride</span><span class="p">(</span><span class="n">PTransformOverride</span><span class="p">):</span> |
| <span class="k">def</span> <span class="nf">matches</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">applied_ptransform</span><span class="p">):</span> |
| <span class="c1"># Note: we match the exact class, since we replace it with a subclass.</span> |
| <span class="k">return</span> <span class="n">applied_ptransform</span><span class="o">.</span><span class="n">transform</span><span class="o">.</span><span class="vm">__class__</span> <span class="o">==</span> <span class="n">_GroupByKeyOnly</span> |
| |
| <span class="k">def</span> <span class="nf">get_replacement_transform</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">transform</span><span class="p">):</span> |
| <span class="c1"># Use specialized streaming implementation.</span> |
| <span class="n">transform</span> <span class="o">=</span> <span class="n">_StreamingGroupByKeyOnly</span><span class="p">()</span> |
| <span class="k">return</span> <span class="n">transform</span> |
| |
| <span class="k">class</span> <span class="nc">StreamingGroupAlsoByWindowOverride</span><span class="p">(</span><span class="n">PTransformOverride</span><span class="p">):</span> |
| <span class="k">def</span> <span class="nf">matches</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">applied_ptransform</span><span class="p">):</span> |
| <span class="c1"># Note: we match the exact class, since we replace it with a subclass.</span> |
| <span class="n">transform</span> <span class="o">=</span> <span class="n">applied_ptransform</span><span class="o">.</span><span class="n">transform</span> |
| <span class="k">return</span> <span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">applied_ptransform</span><span class="o">.</span><span class="n">transform</span><span class="p">,</span> <span class="n">ParDo</span><span class="p">)</span> <span class="ow">and</span> |
| <span class="nb">isinstance</span><span class="p">(</span><span class="n">transform</span><span class="o">.</span><span class="n">dofn</span><span class="p">,</span> <span class="n">_GroupAlsoByWindowDoFn</span><span class="p">)</span> <span class="ow">and</span> |
| <span class="n">transform</span><span class="o">.</span><span class="vm">__class__</span> <span class="o">!=</span> <span class="n">_StreamingGroupAlsoByWindow</span><span class="p">)</span> |
| |
| <span class="k">def</span> <span class="nf">get_replacement_transform</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">transform</span><span class="p">):</span> |
| <span class="c1"># Use specialized streaming implementation.</span> |
| <span class="n">transform</span> <span class="o">=</span> <span class="n">_StreamingGroupAlsoByWindow</span><span class="p">(</span><span class="n">transform</span><span class="o">.</span><span class="n">dofn</span><span class="o">.</span><span class="n">windowing</span><span class="p">)</span> |
| <span class="k">return</span> <span class="n">transform</span> |
| |
| <span class="n">overrides</span> <span class="o">=</span> <span class="p">[</span><span class="n">SplittableParDoOverride</span><span class="p">(),</span> |
| <span class="n">ProcessKeyedElementsViaKeyedWorkItemsOverride</span><span class="p">(),</span> |
| <span class="n">CombinePerKeyOverride</span><span class="p">()]</span> |
| |
| <span class="c1"># Add streaming overrides, if necessary.</span> |
| <span class="k">if</span> <span class="n">pipeline_options</span><span class="o">.</span><span class="n">view_as</span><span class="p">(</span><span class="n">StandardOptions</span><span class="p">)</span><span class="o">.</span><span class="n">streaming</span><span class="p">:</span> |
| <span class="n">overrides</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">StreamingGroupByKeyOverride</span><span class="p">())</span> |
| <span class="n">overrides</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">StreamingGroupAlsoByWindowOverride</span><span class="p">())</span> |
| |
| <span class="c1"># Add PubSub overrides, if PubSub is available.</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.io.gcp</span> <span class="k">import</span> <span class="n">pubsub</span> <span class="k">as</span> <span class="n">unused_pubsub</span> |
| <span class="n">overrides</span> <span class="o">+=</span> <span class="n">_get_pubsub_transform_overrides</span><span class="p">(</span><span class="n">pipeline_options</span><span class="p">)</span> |
| <span class="k">except</span> <span class="ne">ImportError</span><span class="p">:</span> |
| <span class="k">pass</span> |
| |
| <span class="k">return</span> <span class="n">overrides</span> |
| |
| |
| <span class="k">class</span> <span class="nc">_DirectReadFromPubSub</span><span class="p">(</span><span class="n">PTransform</span><span class="p">):</span> |
| <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">source</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_source</span> <span class="o">=</span> <span class="n">source</span> |
| |
| <span class="k">def</span> <span class="nf">_infer_output_coder</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">unused_input_type</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">unused_input_coder</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">coders</span><span class="o">.</span><span class="n">BytesCoder</span><span class="p">()</span> |
| |
| <span class="k">def</span> <span class="nf">get_windowing</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">inputs</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">beam</span><span class="o">.</span><span class="n">Windowing</span><span class="p">(</span><span class="n">beam</span><span class="o">.</span><span class="n">window</span><span class="o">.</span><span class="n">GlobalWindows</span><span class="p">())</span> |
| |
| <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">pvalue</span><span class="p">):</span> |
| <span class="c1"># This is handled as a native transform.</span> |
| <span class="k">return</span> <span class="n">PCollection</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">pipeline</span><span class="p">)</span> |
| |
| |
| <span class="k">class</span> <span class="nc">_DirectWriteToPubSubFn</span><span class="p">(</span><span class="n">DoFn</span><span class="p">):</span> |
| <span class="n">BUFFER_SIZE_ELEMENTS</span> <span class="o">=</span> <span class="mi">100</span> |
| <span class="n">FLUSH_TIMEOUT_SECS</span> <span class="o">=</span> <span class="n">BUFFER_SIZE_ELEMENTS</span> <span class="o">*</span> <span class="mf">0.5</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">sink</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">project</span> <span class="o">=</span> <span class="n">sink</span><span class="o">.</span><span class="n">project</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">short_topic_name</span> <span class="o">=</span> <span class="n">sink</span><span class="o">.</span><span class="n">topic_name</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">id_label</span> <span class="o">=</span> <span class="n">sink</span><span class="o">.</span><span class="n">id_label</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">timestamp_attribute</span> <span class="o">=</span> <span class="n">sink</span><span class="o">.</span><span class="n">timestamp_attribute</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">with_attributes</span> <span class="o">=</span> <span class="n">sink</span><span class="o">.</span><span class="n">with_attributes</span> |
| |
| <span class="c1"># TODO(BEAM-4275): Add support for id_label and timestamp_attribute.</span> |
| <span class="k">if</span> <span class="n">sink</span><span class="o">.</span><span class="n">id_label</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="ne">NotImplementedError</span><span class="p">(</span><span class="s1">'DirectRunner: id_label is not supported for '</span> |
| <span class="s1">'PubSub writes'</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">sink</span><span class="o">.</span><span class="n">timestamp_attribute</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="ne">NotImplementedError</span><span class="p">(</span><span class="s1">'DirectRunner: timestamp_attribute is not '</span> |
| <span class="s1">'supported for PubSub writes'</span><span class="p">)</span> |
| |
| <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">_buffer</span> <span class="o">=</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">elem</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_buffer</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">elem</span><span class="p">)</span> |
| <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_buffer</span><span class="p">)</span> <span class="o">>=</span> <span class="bp">self</span><span class="o">.</span><span class="n">BUFFER_SIZE_ELEMENTS</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_flush</span><span class="p">()</span> |
| |
| <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="bp">self</span><span class="o">.</span><span class="n">_flush</span><span class="p">()</span> |
| |
| <span class="k">def</span> <span class="nf">_flush</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="kn">from</span> <span class="nn">google.cloud</span> <span class="k">import</span> <span class="n">pubsub</span> |
| <span class="n">pub_client</span> <span class="o">=</span> <span class="n">pubsub</span><span class="o">.</span><span class="n">PublisherClient</span><span class="p">()</span> |
| <span class="n">topic</span> <span class="o">=</span> <span class="n">pub_client</span><span class="o">.</span><span class="n">topic_path</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">project</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">short_topic_name</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">with_attributes</span><span class="p">:</span> |
| <span class="n">futures</span> <span class="o">=</span> <span class="p">[</span><span class="n">pub_client</span><span class="o">.</span><span class="n">publish</span><span class="p">(</span><span class="n">topic</span><span class="p">,</span> <span class="n">elem</span><span class="o">.</span><span class="n">data</span><span class="p">,</span> <span class="o">**</span><span class="n">elem</span><span class="o">.</span><span class="n">attributes</span><span class="p">)</span> |
| <span class="k">for</span> <span class="n">elem</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_buffer</span><span class="p">]</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">futures</span> <span class="o">=</span> <span class="p">[</span><span class="n">pub_client</span><span class="o">.</span><span class="n">publish</span><span class="p">(</span><span class="n">topic</span><span class="p">,</span> <span class="n">elem</span><span class="p">)</span> |
| <span class="k">for</span> <span class="n">elem</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_buffer</span><span class="p">]</span> |
| |
| <span class="n">timer_start</span> <span class="o">=</span> <span class="n">time</span><span class="o">.</span><span class="n">time</span><span class="p">()</span> |
| <span class="k">for</span> <span class="n">future</span> <span class="ow">in</span> <span class="n">futures</span><span class="p">:</span> |
| <span class="n">remaining</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">FLUSH_TIMEOUT_SECS</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="n">timer_start</span><span class="p">)</span> |
| <span class="n">future</span><span class="o">.</span><span class="n">result</span><span class="p">(</span><span class="n">remaining</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_buffer</span> <span class="o">=</span> <span class="p">[]</span> |
| |
| |
| <span class="k">def</span> <span class="nf">_get_pubsub_transform_overrides</span><span class="p">(</span><span class="n">pipeline_options</span><span class="p">):</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.io.gcp</span> <span class="k">import</span> <span class="n">pubsub</span> <span class="k">as</span> <span class="n">beam_pubsub</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.pipeline</span> <span class="k">import</span> <span class="n">PTransformOverride</span> |
| |
| <span class="k">class</span> <span class="nc">ReadFromPubSubOverride</span><span class="p">(</span><span class="n">PTransformOverride</span><span class="p">):</span> |
| <span class="k">def</span> <span class="nf">matches</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">applied_ptransform</span><span class="p">):</span> |
| <span class="k">return</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">applied_ptransform</span><span class="o">.</span><span class="n">transform</span><span class="p">,</span> |
| <span class="n">beam_pubsub</span><span class="o">.</span><span class="n">ReadFromPubSub</span><span class="p">)</span> |
| |
| <span class="k">def</span> <span class="nf">get_replacement_transform</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">transform</span><span class="p">):</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">pipeline_options</span><span class="o">.</span><span class="n">view_as</span><span class="p">(</span><span class="n">StandardOptions</span><span class="p">)</span><span class="o">.</span><span class="n">streaming</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span><span class="s1">'PubSub I/O is only available in streaming mode '</span> |
| <span class="s1">'(use the --streaming flag).'</span><span class="p">)</span> |
| <span class="k">return</span> <span class="n">_DirectReadFromPubSub</span><span class="p">(</span><span class="n">transform</span><span class="o">.</span><span class="n">_source</span><span class="p">)</span> |
| |
| <span class="k">class</span> <span class="nc">WriteToPubSubOverride</span><span class="p">(</span><span class="n">PTransformOverride</span><span class="p">):</span> |
| <span class="k">def</span> <span class="nf">matches</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">applied_ptransform</span><span class="p">):</span> |
| <span class="k">return</span> <span class="nb">isinstance</span><span class="p">(</span> |
| <span class="n">applied_ptransform</span><span class="o">.</span><span class="n">transform</span><span class="p">,</span> |
| <span class="p">(</span><span class="n">beam_pubsub</span><span class="o">.</span><span class="n">WriteToPubSub</span><span class="p">,</span> <span class="n">beam_pubsub</span><span class="o">.</span><span class="n">_WriteStringsToPubSub</span><span class="p">))</span> |
| |
| <span class="k">def</span> <span class="nf">get_replacement_transform</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">transform</span><span class="p">):</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">pipeline_options</span><span class="o">.</span><span class="n">view_as</span><span class="p">(</span><span class="n">StandardOptions</span><span class="p">)</span><span class="o">.</span><span class="n">streaming</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span><span class="s1">'PubSub I/O is only available in streaming mode '</span> |
| <span class="s1">'(use the --streaming flag).'</span><span class="p">)</span> |
| <span class="k">return</span> <span class="n">beam</span><span class="o">.</span><span class="n">ParDo</span><span class="p">(</span><span class="n">_DirectWriteToPubSubFn</span><span class="p">(</span><span class="n">transform</span><span class="o">.</span><span class="n">_sink</span><span class="p">))</span> |
| |
| <span class="k">return</span> <span class="p">[</span><span class="n">ReadFromPubSubOverride</span><span class="p">(),</span> <span class="n">WriteToPubSubOverride</span><span class="p">()]</span> |
| |
| |
| <div class="viewcode-block" id="BundleBasedDirectRunner"><a class="viewcode-back" href="../../../../apache_beam.runners.direct.direct_runner.html#apache_beam.runners.direct.direct_runner.BundleBasedDirectRunner">[docs]</a><span class="k">class</span> <span class="nc">BundleBasedDirectRunner</span><span class="p">(</span><span class="n">PipelineRunner</span><span class="p">):</span> |
| <span class="sd">"""Executes a single pipeline on the local machine."""</span> |
| |
| <div class="viewcode-block" id="BundleBasedDirectRunner.run_pipeline"><a class="viewcode-back" href="../../../../apache_beam.runners.direct.direct_runner.html#apache_beam.runners.direct.direct_runner.BundleBasedDirectRunner.run_pipeline">[docs]</a> <span class="k">def</span> <span class="nf">run_pipeline</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">pipeline</span><span class="p">,</span> <span class="n">options</span><span class="p">):</span> |
| <span class="sd">"""Execute the entire pipeline and returns an DirectPipelineResult."""</span> |
| |
| <span class="c1"># TODO: Move imports to top. Pipeline <-> Runner dependency cause problems</span> |
| <span class="c1"># with resolving imports when they are at top.</span> |
| <span class="c1"># pylint: disable=wrong-import-position</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.pipeline</span> <span class="k">import</span> <span class="n">PipelineVisitor</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.runners.direct.consumer_tracking_pipeline_visitor</span> <span class="k">import</span> \ |
| <span class="n">ConsumerTrackingPipelineVisitor</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.runners.direct.evaluation_context</span> <span class="k">import</span> <span class="n">EvaluationContext</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.runners.direct.executor</span> <span class="k">import</span> <span class="n">Executor</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.runners.direct.transform_evaluator</span> <span class="k">import</span> \ |
| <span class="n">TransformEvaluatorRegistry</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.testing.test_stream</span> <span class="k">import</span> <span class="n">TestStream</span> |
| |
| <span class="c1"># Performing configured PTransform overrides.</span> |
| <span class="n">pipeline</span><span class="o">.</span><span class="n">replace_all</span><span class="p">(</span><span class="n">_get_transform_overrides</span><span class="p">(</span><span class="n">options</span><span class="p">))</span> |
| |
| <span class="c1"># If the TestStream I/O is used, use a mock test clock.</span> |
| <span class="k">class</span> <span class="nc">_TestStreamUsageVisitor</span><span class="p">(</span><span class="n">PipelineVisitor</span><span class="p">):</span> |
| <span class="sd">"""Visitor determining whether a Pipeline uses a TestStream."""</span> |
| |
| <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">uses_test_stream</span> <span class="o">=</span> <span class="kc">False</span> |
| |
| <span class="k">def</span> <span class="nf">visit_transform</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">applied_ptransform</span><span class="p">):</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">applied_ptransform</span><span class="o">.</span><span class="n">transform</span><span class="p">,</span> <span class="n">TestStream</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">uses_test_stream</span> <span class="o">=</span> <span class="kc">True</span> |
| |
| <span class="n">visitor</span> <span class="o">=</span> <span class="n">_TestStreamUsageVisitor</span><span class="p">()</span> |
| <span class="n">pipeline</span><span class="o">.</span><span class="n">visit</span><span class="p">(</span><span class="n">visitor</span><span class="p">)</span> |
| <span class="n">clock</span> <span class="o">=</span> <span class="n">TestClock</span><span class="p">()</span> <span class="k">if</span> <span class="n">visitor</span><span class="o">.</span><span class="n">uses_test_stream</span> <span class="k">else</span> <span class="n">RealClock</span><span class="p">()</span> |
| |
| <span class="c1"># TODO(BEAM-4274): Circular import runners-metrics. Requires refactoring.</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.metrics.execution</span> <span class="k">import</span> <span class="n">MetricsEnvironment</span> |
| <span class="n">MetricsEnvironment</span><span class="o">.</span><span class="n">set_metrics_supported</span><span class="p">(</span><span class="kc">True</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">'Running pipeline with DirectRunner.'</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">consumer_tracking_visitor</span> <span class="o">=</span> <span class="n">ConsumerTrackingPipelineVisitor</span><span class="p">()</span> |
| <span class="n">pipeline</span><span class="o">.</span><span class="n">visit</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">consumer_tracking_visitor</span><span class="p">)</span> |
| |
| <span class="n">evaluation_context</span> <span class="o">=</span> <span class="n">EvaluationContext</span><span class="p">(</span> |
| <span class="n">options</span><span class="p">,</span> |
| <span class="n">BundleFactory</span><span class="p">(</span><span class="n">stacked</span><span class="o">=</span><span class="n">options</span><span class="o">.</span><span class="n">view_as</span><span class="p">(</span><span class="n">DirectOptions</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">direct_runner_use_stacked_bundle</span><span class="p">),</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">consumer_tracking_visitor</span><span class="o">.</span><span class="n">root_transforms</span><span class="p">,</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">consumer_tracking_visitor</span><span class="o">.</span><span class="n">value_to_consumers</span><span class="p">,</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">consumer_tracking_visitor</span><span class="o">.</span><span class="n">step_names</span><span class="p">,</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">consumer_tracking_visitor</span><span class="o">.</span><span class="n">views</span><span class="p">,</span> |
| <span class="n">clock</span><span class="p">)</span> |
| |
| <span class="n">executor</span> <span class="o">=</span> <span class="n">Executor</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">consumer_tracking_visitor</span><span class="o">.</span><span class="n">value_to_consumers</span><span class="p">,</span> |
| <span class="n">TransformEvaluatorRegistry</span><span class="p">(</span><span class="n">evaluation_context</span><span class="p">),</span> |
| <span class="n">evaluation_context</span><span class="p">)</span> |
| <span class="c1"># DirectRunner does not support injecting</span> |
| <span class="c1"># PipelineOptions values at runtime</span> |
| <span class="n">RuntimeValueProvider</span><span class="o">.</span><span class="n">set_runtime_options</span><span class="p">({})</span> |
| <span class="c1"># Start the executor. This is a non-blocking call, it will start the</span> |
| <span class="c1"># execution in background threads and return.</span> |
| <span class="n">executor</span><span class="o">.</span><span class="n">start</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">consumer_tracking_visitor</span><span class="o">.</span><span class="n">root_transforms</span><span class="p">)</span> |
| <span class="n">result</span> <span class="o">=</span> <span class="n">DirectPipelineResult</span><span class="p">(</span><span class="n">executor</span><span class="p">,</span> <span class="n">evaluation_context</span><span class="p">)</span> |
| |
| <span class="k">return</span> <span class="n">result</span></div></div> |
| |
| |
| <span class="c1"># Use the SwitchingDirectRunner as the default.</span> |
| <span class="n">DirectRunner</span> <span class="o">=</span> <span class="n">SwitchingDirectRunner</span> |
| |
| |
| <span class="k">class</span> <span class="nc">DirectPipelineResult</span><span class="p">(</span><span class="n">PipelineResult</span><span class="p">):</span> |
| <span class="sd">"""A DirectPipelineResult provides access to info about a pipeline."""</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">executor</span><span class="p">,</span> <span class="n">evaluation_context</span><span class="p">):</span> |
| <span class="nb">super</span><span class="p">(</span><span class="n">DirectPipelineResult</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="n">PipelineState</span><span class="o">.</span><span class="n">RUNNING</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_executor</span> <span class="o">=</span> <span class="n">executor</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_evaluation_context</span> <span class="o">=</span> <span class="n">evaluation_context</span> |
| |
| <span class="k">def</span> <span class="nf">__del__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_state</span> <span class="o">==</span> <span class="n">PipelineState</span><span class="o">.</span><span class="n">RUNNING</span><span class="p">:</span> |
| <span class="n">logging</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span> |
| <span class="s1">'The DirectPipelineResult is being garbage-collected while the '</span> |
| <span class="s1">'DirectRunner is still running the corresponding pipeline. This may '</span> |
| <span class="s1">'lead to incomplete execution of the pipeline if the main thread '</span> |
| <span class="s1">'exits before pipeline completion. Consider using '</span> |
| <span class="s1">'result.wait_until_finish() to wait for completion of pipeline '</span> |
| <span class="s1">'execution.'</span><span class="p">)</span> |
| |
| <span class="k">def</span> <span class="nf">wait_until_finish</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">duration</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">PipelineState</span><span class="o">.</span><span class="n">is_terminal</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">state</span><span class="p">):</span> |
| <span class="k">if</span> <span class="n">duration</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="ne">NotImplementedError</span><span class="p">(</span> |
| <span class="s1">'DirectRunner does not support duration argument.'</span><span class="p">)</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_executor</span><span class="o">.</span><span class="n">await_completion</span><span class="p">()</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_state</span> <span class="o">=</span> <span class="n">PipelineState</span><span class="o">.</span><span class="n">DONE</span> |
| <span class="k">except</span><span class="p">:</span> <span class="c1"># pylint: disable=broad-except</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_state</span> <span class="o">=</span> <span class="n">PipelineState</span><span class="o">.</span><span class="n">FAILED</span> |
| <span class="k">raise</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_state</span> |
| |
| <span class="k">def</span> <span class="nf">aggregated_values</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">aggregator_or_name</span><span class="p">):</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_evaluation_context</span><span class="o">.</span><span class="n">get_aggregator_values</span><span class="p">(</span><span class="n">aggregator_or_name</span><span class="p">)</span> |
| |
| <span class="k">def</span> <span class="nf">metrics</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">_evaluation_context</span><span class="o">.</span><span class="n">metrics</span><span class="p">()</span> |
| |
| <span class="k">def</span> <span class="nf">cancel</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""Shuts down pipeline workers.</span> |
| |
| <span class="sd"> For testing use only. Does not properly wait for pipeline workers to shut</span> |
| <span class="sd"> down.</span> |
| <span class="sd"> """</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_state</span> <span class="o">=</span> <span class="n">PipelineState</span><span class="o">.</span><span class="n">CANCELLING</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_executor</span><span class="o">.</span><span class="n">shutdown</span><span class="p">()</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_state</span> <span class="o">=</span> <span class="n">PipelineState</span><span class="o">.</span><span class="n">CANCELLED</span> |
| </pre></div> |
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