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| <h1>Source code for apache_beam.transforms.fully_qualified_named_transform</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="c1"># pytype: skip-file</span> |
| |
| <span class="kn">import</span> <span class="nn">contextlib</span> |
| <span class="kn">import</span> <span class="nn">fnmatch</span> |
| <span class="kn">import</span> <span class="nn">importlib</span> |
| |
| <span class="kn">from</span> <span class="nn">apache_beam</span> <span class="kn">import</span> <span class="n">coders</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.portability.api</span> <span class="kn">import</span> <span class="n">external_transforms_pb2</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.pvalue</span> <span class="kn">import</span> <span class="n">Row</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.transforms</span> <span class="kn">import</span> <span class="n">ptransform</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.typehints.native_type_compatibility</span> <span class="kn">import</span> <span class="n">convert_to_typing_type</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.typehints.schemas</span> <span class="kn">import</span> <span class="n">named_fields_to_schema</span> |
| <span class="kn">from</span> <span class="nn">apache_beam.typehints.trivial_inference</span> <span class="kn">import</span> <span class="n">instance_to_type</span> |
| |
| <span class="n">PYTHON_FULLY_QUALIFIED_NAMED_TRANSFORM_URN</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="s1">'beam:transforms:python:fully_qualified_named'</span><span class="p">)</span> |
| |
| |
| <div class="viewcode-block" id="FullyQualifiedNamedTransform"><a class="viewcode-back" href="../../../apache_beam.transforms.fully_qualified_named_transform.html#apache_beam.transforms.fully_qualified_named_transform.FullyQualifiedNamedTransform">[docs]</a><span class="nd">@ptransform</span><span class="o">.</span><span class="n">PTransform</span><span class="o">.</span><span class="n">register_urn</span><span class="p">(</span> |
| <span class="n">PYTHON_FULLY_QUALIFIED_NAMED_TRANSFORM_URN</span><span class="p">,</span> |
| <span class="n">external_transforms_pb2</span><span class="o">.</span><span class="n">ExternalConfigurationPayload</span><span class="p">)</span> |
| <span class="k">class</span> <span class="nc">FullyQualifiedNamedTransform</span><span class="p">(</span><span class="n">ptransform</span><span class="o">.</span><span class="n">PTransform</span><span class="p">):</span> |
| |
| <span class="n">_FILTER_GLOB</span> <span class="o">=</span> <span class="kc">None</span> |
| |
| <div class="viewcode-block" id="FullyQualifiedNamedTransform.with_filter"><a class="viewcode-back" href="../../../apache_beam.transforms.fully_qualified_named_transform.html#apache_beam.transforms.fully_qualified_named_transform.FullyQualifiedNamedTransform.with_filter">[docs]</a> <span class="nd">@classmethod</span> |
| <span class="nd">@contextlib</span><span class="o">.</span><span class="n">contextmanager</span> |
| <span class="k">def</span> <span class="nf">with_filter</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="nb">filter</span><span class="p">):</span> |
| <span class="n">old_filter</span><span class="p">,</span> <span class="bp">cls</span><span class="o">.</span><span class="n">_FILTER_GLOB</span> <span class="o">=</span> <span class="bp">cls</span><span class="o">.</span><span class="n">_FILTER_GLOB</span><span class="p">,</span> <span class="nb">filter</span> |
| <span class="k">yield</span> |
| <span class="bp">cls</span><span class="o">.</span><span class="n">_FILTER_GLOB</span> <span class="o">=</span> <span class="n">old_filter</span></div> |
| |
| <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">constructor</span><span class="p">,</span> <span class="n">args</span><span class="p">,</span> <span class="n">kwargs</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_constructor</span> <span class="o">=</span> <span class="n">constructor</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_args</span> <span class="o">=</span> <span class="n">args</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_kwargs</span> <span class="o">=</span> <span class="n">kwargs</span> |
| |
| <div class="viewcode-block" id="FullyQualifiedNamedTransform.expand"><a class="viewcode-back" href="../../../apache_beam.transforms.fully_qualified_named_transform.html#apache_beam.transforms.fully_qualified_named_transform.FullyQualifiedNamedTransform.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">pinput</span><span class="p">):</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_constructor</span> <span class="ow">in</span> <span class="p">(</span><span class="s1">'__callable__'</span><span class="p">,</span> <span class="s1">'__constructor__'</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_check_allowed</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_constructor</span><span class="p">)</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_args</span><span class="p">:</span> |
| <span class="n">source</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_args</span><span class="p">)</span> |
| <span class="n">kwargs</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_kwargs</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">args</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_args</span> |
| <span class="n">kwargs</span> <span class="o">=</span> <span class="nb">dict</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_kwargs</span><span class="p">)</span> |
| <span class="n">source</span> <span class="o">=</span> <span class="n">kwargs</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s1">'source'</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_constructor</span> <span class="o">==</span> <span class="s1">'__constructor__'</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="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">transform</span> <span class="o">=</span> <span class="n">ptransform</span><span class="o">.</span><span class="n">_PTransformFnPTransform</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> |
| |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">transform</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_resolve</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_constructor</span><span class="p">)(</span><span class="o">*</span><span class="bp">self</span><span class="o">.</span><span class="n">_args</span><span class="p">,</span> <span class="o">**</span><span class="bp">self</span><span class="o">.</span><span class="n">_kwargs</span><span class="p">)</span> |
| |
| <span class="k">return</span> <span class="n">pinput</span> <span class="o">|</span> <span class="n">transform</span></div> |
| |
| <span class="nd">@classmethod</span> |
| <span class="k">def</span> <span class="nf">_check_allowed</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">fully_qualified_name</span><span class="p">):</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">cls</span><span class="o">.</span><span class="n">_FILTER_GLOB</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">fnmatch</span><span class="o">.</span><span class="n">fnmatchcase</span><span class="p">(</span><span class="n">fully_qualified_name</span><span class="p">,</span> |
| <span class="bp">cls</span><span class="o">.</span><span class="n">_FILTER_GLOB</span><span class="p">):</span> |
| <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span> |
| <span class="sa">f</span><span class="s1">'Fully qualifed name "</span><span class="si">{</span><span class="n">fully_qualified_name</span><span class="si">}</span><span class="s1">" '</span> |
| <span class="sa">f</span><span class="s1">'not allowed by filter </span><span class="si">{</span><span class="bp">cls</span><span class="o">.</span><span class="n">_FILTER_GLOB</span><span class="si">}</span><span class="s1">.'</span><span class="p">)</span> |
| |
| <span class="nd">@classmethod</span> |
| <span class="k">def</span> <span class="nf">_resolve</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">fully_qualified_name</span><span class="p">):</span> |
| <span class="bp">cls</span><span class="o">.</span><span class="n">_check_allowed</span><span class="p">(</span><span class="n">fully_qualified_name</span><span class="p">)</span> |
| <span class="n">o</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="n">path</span> <span class="o">=</span> <span class="s1">''</span> |
| <span class="k">for</span> <span class="n">segment</span> <span class="ow">in</span> <span class="n">fully_qualified_name</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">'.'</span><span class="p">):</span> |
| <span class="n">path</span> <span class="o">=</span> <span class="s1">'.'</span><span class="o">.</span><span class="n">join</span><span class="p">([</span><span class="n">path</span><span class="p">,</span> <span class="n">segment</span><span class="p">])</span> <span class="k">if</span> <span class="n">path</span> <span class="k">else</span> <span class="n">segment</span> |
| <span class="k">if</span> <span class="n">o</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> <span class="ow">and</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">o</span><span class="p">,</span> <span class="n">segment</span><span class="p">):</span> |
| <span class="n">o</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">o</span><span class="p">,</span> <span class="n">segment</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">o</span> <span class="o">=</span> <span class="n">importlib</span><span class="o">.</span><span class="n">import_module</span><span class="p">(</span><span class="n">path</span><span class="p">)</span> |
| <span class="k">return</span> <span class="n">o</span> |
| |
| <div class="viewcode-block" id="FullyQualifiedNamedTransform.to_runner_api_parameter"><a class="viewcode-back" href="../../../apache_beam.transforms.fully_qualified_named_transform.html#apache_beam.transforms.fully_qualified_named_transform.FullyQualifiedNamedTransform.to_runner_api_parameter">[docs]</a> <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="n">_args_schema</span> <span class="o">=</span> <span class="n">named_fields_to_schema</span><span class="p">([</span> |
| <span class="p">(</span><span class="sa">f</span><span class="s1">'arg</span><span class="si">{</span><span class="n">ix</span><span class="si">}</span><span class="s1">'</span><span class="p">,</span> <span class="n">convert_to_typing_type</span><span class="p">(</span><span class="n">instance_to_type</span><span class="p">(</span><span class="n">value</span><span class="p">)))</span> |
| <span class="k">for</span> <span class="p">(</span><span class="n">ix</span><span class="p">,</span> <span class="n">value</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_args</span><span class="p">)</span> |
| <span class="p">])</span> |
| <span class="n">_kwargs_schema</span> <span class="o">=</span> <span class="n">named_fields_to_schema</span><span class="p">([</span> |
| <span class="p">(</span><span class="n">key</span><span class="p">,</span> <span class="n">convert_to_typing_type</span><span class="p">(</span><span class="n">instance_to_type</span><span class="p">(</span><span class="n">value</span><span class="p">)))</span> |
| <span class="k">for</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="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_kwargs</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> |
| <span class="p">])</span> |
| <span class="n">payload_schema</span> <span class="o">=</span> <span class="n">named_fields_to_schema</span><span class="p">({</span> |
| <span class="s1">'constructor'</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> |
| <span class="s1">'args'</span><span class="p">:</span> <span class="n">_args_schema</span><span class="p">,</span> |
| <span class="s1">'kwargs'</span><span class="p">:</span> <span class="n">_kwargs_schema</span><span class="p">,</span> |
| <span class="p">})</span> |
| <span class="k">return</span> <span class="p">(</span> |
| <span class="n">PYTHON_FULLY_QUALIFIED_NAMED_TRANSFORM_URN</span><span class="p">,</span> |
| <span class="n">external_transforms_pb2</span><span class="o">.</span><span class="n">ExternalConfigurationPayload</span><span class="p">(</span> |
| <span class="n">schema</span><span class="o">=</span><span class="n">payload_schema</span><span class="p">,</span> |
| <span class="n">payload</span><span class="o">=</span><span class="n">coders</span><span class="o">.</span><span class="n">RowCoder</span><span class="p">(</span><span class="n">payload_schema</span><span class="p">)</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span> |
| <span class="n">Row</span><span class="p">(</span> |
| <span class="n">constructor</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">_constructor</span><span class="p">,</span> |
| <span class="n">args</span><span class="o">=</span><span class="n">Row</span><span class="p">(</span> |
| <span class="o">**</span><span class="p">{</span> |
| <span class="sa">f</span><span class="s1">'arg</span><span class="si">{</span><span class="n">ix</span><span class="si">}</span><span class="s1">'</span><span class="p">:</span> <span class="n">arg</span> |
| <span class="k">for</span> <span class="p">(</span><span class="n">ix</span><span class="p">,</span> <span class="n">arg</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_args</span><span class="p">)</span> |
| <span class="p">}),</span> |
| <span class="n">kwargs</span><span class="o">=</span><span class="n">Row</span><span class="p">(</span><span class="o">**</span><span class="bp">self</span><span class="o">.</span><span class="n">_kwargs</span><span class="p">)),</span> |
| <span class="p">)))</span></div> |
| |
| <div class="viewcode-block" id="FullyQualifiedNamedTransform.from_runner_api_parameter"><a class="viewcode-back" href="../../../apache_beam.transforms.fully_qualified_named_transform.html#apache_beam.transforms.fully_qualified_named_transform.FullyQualifiedNamedTransform.from_runner_api_parameter">[docs]</a> <span class="nd">@staticmethod</span> |
| <span class="k">def</span> <span class="nf">from_runner_api_parameter</span><span class="p">(</span><span class="n">unused_ptransform</span><span class="p">,</span> <span class="n">payload</span><span class="p">,</span> <span class="n">unused_context</span><span class="p">):</span> |
| <span class="n">row</span> <span class="o">=</span> <span class="n">coders</span><span class="o">.</span><span class="n">RowCoder</span><span class="p">(</span><span class="n">payload</span><span class="o">.</span><span class="n">schema</span><span class="p">)</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="n">payload</span><span class="o">.</span><span class="n">payload</span><span class="p">)</span> |
| <span class="n">maybe_as_dict</span> <span class="o">=</span> <span class="k">lambda</span> <span class="n">x</span><span class="p">:</span> <span class="n">x</span><span class="o">.</span><span class="n">_asdict</span><span class="p">()</span> <span class="k">if</span> <span class="n">x</span> <span class="k">else</span> <span class="p">{}</span> |
| <span class="k">return</span> <span class="n">FullyQualifiedNamedTransform</span><span class="p">(</span> |
| <span class="n">row</span><span class="o">.</span><span class="n">constructor</span><span class="p">,</span> |
| <span class="nb">tuple</span><span class="p">(</span><span class="nb">getattr</span><span class="p">(</span><span class="n">row</span><span class="p">,</span> <span class="s1">'args'</span><span class="p">,</span> <span class="p">())),</span> |
| <span class="n">maybe_as_dict</span><span class="p">(</span><span class="nb">getattr</span><span class="p">(</span><span class="n">row</span><span class="p">,</span> <span class="s1">'kwargs'</span><span class="p">,</span> <span class="kc">None</span><span class="p">)))</span></div></div> |
| </pre></div> |
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