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| <div class="section" id="module-apache_beam.internal.util"> |
| <span id="apache-beam-internal-util-module"></span><h1>apache_beam.internal.util module<a class="headerlink" href="#module-apache_beam.internal.util" title="Permalink to this headline">¶</a></h1> |
| <p>Utility functions used throughout the package.</p> |
| <p>For internal use only. No backwards compatibility guarantees.</p> |
| <dl class="class"> |
| <dt id="apache_beam.internal.util.ArgumentPlaceholder"> |
| <em class="property">class </em><code class="descclassname">apache_beam.internal.util.</code><code class="descname">ArgumentPlaceholder</code><a class="reference internal" href="_modules/apache_beam/internal/util.html#ArgumentPlaceholder"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.internal.util.ArgumentPlaceholder" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Bases: <code class="xref py py-class docutils literal"><span class="pre">future.types.newobject.newobject</span></code></p> |
| <p>For internal use only; no backwards-compatibility guarantees.</p> |
| <p>A place holder object replacing PValues in argument lists.</p> |
| <p>A Fn object can take any number of “side inputs”, which are PValues that will |
| be evaluated during pipeline execution and will be provided to the function |
| at the moment of its execution as positional or keyword arguments.</p> |
| <p>This is used only internally and should never be used by user code. A custom |
| Fn object by the time it executes will have such values replaced with real |
| computed values.</p> |
| </dd></dl> |
| |
| <dl class="function"> |
| <dt id="apache_beam.internal.util.remove_objects_from_args"> |
| <code class="descclassname">apache_beam.internal.util.</code><code class="descname">remove_objects_from_args</code><span class="sig-paren">(</span><em>args</em>, <em>kwargs</em>, <em>pvalue_class</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/internal/util.html#remove_objects_from_args"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.internal.util.remove_objects_from_args" title="Permalink to this definition">¶</a></dt> |
| <dd><p>For internal use only; no backwards-compatibility guarantees.</p> |
| <p>Replaces all objects of a given type in args/kwargs with a placeholder.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> |
| <li><strong>args</strong> – A list of positional arguments.</li> |
| <li><strong>kwargs</strong> – A dictionary of keyword arguments.</li> |
| <li><strong>pvalue_class</strong> – A class object representing the types of arguments that must |
| be replaced with a placeholder value (instance of ArgumentPlaceholder).</li> |
| </ul> |
| </td> |
| </tr> |
| <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">A 3-tuple containing a modified list of positional arguments, a modified |
| dictionary of keyword arguments, and a list of all objects replaced with |
| a placeholder value.</p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="function"> |
| <dt id="apache_beam.internal.util.insert_values_in_args"> |
| <code class="descclassname">apache_beam.internal.util.</code><code class="descname">insert_values_in_args</code><span class="sig-paren">(</span><em>args</em>, <em>kwargs</em>, <em>values</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/internal/util.html#insert_values_in_args"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.internal.util.insert_values_in_args" title="Permalink to this definition">¶</a></dt> |
| <dd><p>For internal use only; no backwards-compatibility guarantees.</p> |
| <p>Replaces all placeholders in args/kwargs with actual values.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> |
| <li><strong>args</strong> – A list of positional arguments.</li> |
| <li><strong>kwargs</strong> – A dictionary of keyword arguments.</li> |
| <li><strong>values</strong> – A list of values that will be used to replace placeholder values.</li> |
| </ul> |
| </td> |
| </tr> |
| <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">A 2-tuple containing a modified list of positional arguments, and a |
| modified dictionary of keyword arguments.</p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="function"> |
| <dt id="apache_beam.internal.util.run_using_threadpool"> |
| <code class="descclassname">apache_beam.internal.util.</code><code class="descname">run_using_threadpool</code><span class="sig-paren">(</span><em>fn_to_execute</em>, <em>inputs</em>, <em>pool_size</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/internal/util.html#run_using_threadpool"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.internal.util.run_using_threadpool" title="Permalink to this definition">¶</a></dt> |
| <dd><p>For internal use only; no backwards-compatibility guarantees.</p> |
| <p>Runs the given function on given inputs using a thread pool.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> |
| <li><strong>fn_to_execute</strong> – Function to execute</li> |
| <li><strong>inputs</strong> – Inputs on which given function will be executed in parallel.</li> |
| <li><strong>pool_size</strong> – Size of thread pool.</li> |
| </ul> |
| </td> |
| </tr> |
| <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">Results retrieved after executing the given function on given inputs.</p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
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