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| <section id="module-apache_beam.runners.interactive.background_caching_job"> |
| <span id="apache-beam-runners-interactive-background-caching-job-module"></span><h1>apache_beam.runners.interactive.background_caching_job module<a class="headerlink" href="#module-apache_beam.runners.interactive.background_caching_job" title="Link to this heading"></a></h1> |
| <p>Module to build and run background source recording jobs.</p> |
| <p>For internal use only; no backwards-compatibility guarantees.</p> |
| <p>A background source recording job is a job that records events for all |
| recordable sources of a given pipeline. With Interactive Beam, one such job is |
| started when a pipeline run happens (which produces a main job in contrast to |
| the background source recording job) and meets the following conditions:</p> |
| <blockquote> |
| <div><ol class="arabic simple"> |
| <li><p>The pipeline contains recordable sources, configured through |
| interactive_beam.options.recordable_sources.</p></li> |
| <li><p>No such background job is running.</p></li> |
| <li><p>No such background job has completed successfully and the cached events are |
| still valid (invalidated when recordable sources change in the pipeline).</p></li> |
| </ol> |
| </div></blockquote> |
| <p>Once started, the background source recording job runs asynchronously until it |
| hits some recording limit configured in interactive_beam.options. Meanwhile, |
| the main job and future main jobs from the pipeline will run using the |
| deterministic replayable recorded events until they are invalidated.</p> |
| <dl class="py class"> |
| <dt class="sig sig-object py" id="apache_beam.runners.interactive.background_caching_job.BackgroundCachingJob"> |
| <em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">apache_beam.runners.interactive.background_caching_job.</span></span><span class="sig-name descname"><span class="pre">BackgroundCachingJob</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">pipeline_result</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">limiters</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/runners/interactive/background_caching_job.html#BackgroundCachingJob"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.runners.interactive.background_caching_job.BackgroundCachingJob" title="Link to this definition"></a></dt> |
| <dd><p>Bases: <a class="reference external" href="https://docs.python.org/3/library/functions.html#object" title="(in Python v3.13)"><code class="xref py py-class docutils literal notranslate"><span class="pre">object</span></code></a></p> |
| <p>A simple abstraction that controls necessary components of a timed and |
| space limited background source recording job.</p> |
| <p>A background source recording job successfully completes source data |
| recording in 2 conditions:</p> |
| <blockquote> |
| <div><ol class="arabic simple"> |
| <li><p>The job is finite and runs into DONE state;</p></li> |
| <li><p>The job is infinite but hits an interactive_beam.options configured limit |
| and gets cancelled into CANCELLED/CANCELLING state.</p></li> |
| </ol> |
| </div></blockquote> |
| <p>In both situations, the background source recording job should be treated as |
| done successfully.</p> |
| <dl class="py method"> |
| <dt class="sig sig-object py" id="apache_beam.runners.interactive.background_caching_job.BackgroundCachingJob.is_done"> |
| <span class="sig-name descname"><span class="pre">is_done</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/runners/interactive/background_caching_job.html#BackgroundCachingJob.is_done"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.runners.interactive.background_caching_job.BackgroundCachingJob.is_done" title="Link to this definition"></a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py method"> |
| <dt class="sig sig-object py" id="apache_beam.runners.interactive.background_caching_job.BackgroundCachingJob.is_running"> |
| <span class="sig-name descname"><span class="pre">is_running</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/runners/interactive/background_caching_job.html#BackgroundCachingJob.is_running"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.runners.interactive.background_caching_job.BackgroundCachingJob.is_running" title="Link to this definition"></a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py method"> |
| <dt class="sig sig-object py" id="apache_beam.runners.interactive.background_caching_job.BackgroundCachingJob.cancel"> |
| <span class="sig-name descname"><span class="pre">cancel</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/runners/interactive/background_caching_job.html#BackgroundCachingJob.cancel"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.runners.interactive.background_caching_job.BackgroundCachingJob.cancel" title="Link to this definition"></a></dt> |
| <dd><p>Cancels this background source recording job.</p> |
| </dd></dl> |
| |
| <dl class="py property"> |
| <dt class="sig sig-object py" id="apache_beam.runners.interactive.background_caching_job.BackgroundCachingJob.state"> |
| <em class="property"><span class="pre">property</span><span class="w"> </span></em><span class="sig-name descname"><span class="pre">state</span></span><a class="headerlink" href="#apache_beam.runners.interactive.background_caching_job.BackgroundCachingJob.state" title="Link to this definition"></a></dt> |
| <dd></dd></dl> |
| |
| </dd></dl> |
| |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="apache_beam.runners.interactive.background_caching_job.attempt_to_run_background_caching_job"> |
| <span class="sig-prename descclassname"><span class="pre">apache_beam.runners.interactive.background_caching_job.</span></span><span class="sig-name descname"><span class="pre">attempt_to_run_background_caching_job</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">runner</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">user_pipeline</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">options</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">None</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">limiters</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">None</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/runners/interactive/background_caching_job.html#attempt_to_run_background_caching_job"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.runners.interactive.background_caching_job.attempt_to_run_background_caching_job" title="Link to this definition"></a></dt> |
| <dd><p>Attempts to run a background source recording job for a user-defined |
| pipeline.</p> |
| <p>Returns True if a job was started, False otherwise.</p> |
| <p>The pipeline result is automatically tracked by Interactive Beam in case |
| future cancellation/cleanup is needed.</p> |
| </dd></dl> |
| |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="apache_beam.runners.interactive.background_caching_job.is_background_caching_job_needed"> |
| <span class="sig-prename descclassname"><span class="pre">apache_beam.runners.interactive.background_caching_job.</span></span><span class="sig-name descname"><span class="pre">is_background_caching_job_needed</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">user_pipeline</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/runners/interactive/background_caching_job.html#is_background_caching_job_needed"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.runners.interactive.background_caching_job.is_background_caching_job_needed" title="Link to this definition"></a></dt> |
| <dd><p>Determines if a background source recording job needs to be started.</p> |
| <p>It does several state checks and recording state changes throughout the |
| process. It is not idempotent to simplify the usage.</p> |
| </dd></dl> |
| |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="apache_beam.runners.interactive.background_caching_job.is_cache_complete"> |
| <span class="sig-prename descclassname"><span class="pre">apache_beam.runners.interactive.background_caching_job.</span></span><span class="sig-name descname"><span class="pre">is_cache_complete</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">pipeline_id</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.13)"><span class="pre">str</span></a></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference external" href="https://docs.python.org/3/library/functions.html#bool" title="(in Python v3.13)"><span class="pre">bool</span></a></span></span><a class="reference internal" href="_modules/apache_beam/runners/interactive/background_caching_job.html#is_cache_complete"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.runners.interactive.background_caching_job.is_cache_complete" title="Link to this definition"></a></dt> |
| <dd><p>Returns True if the backgrond cache for the given pipeline is done.</p> |
| </dd></dl> |
| |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="apache_beam.runners.interactive.background_caching_job.has_source_to_cache"> |
| <span class="sig-prename descclassname"><span class="pre">apache_beam.runners.interactive.background_caching_job.</span></span><span class="sig-name descname"><span class="pre">has_source_to_cache</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">user_pipeline</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/runners/interactive/background_caching_job.html#has_source_to_cache"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.runners.interactive.background_caching_job.has_source_to_cache" title="Link to this definition"></a></dt> |
| <dd><p>Determines if a user-defined pipeline contains any source that need to be |
| cached. If so, also immediately wrap current cache manager held by current |
| interactive environment into a streaming cache if this has not been done. |
| The wrapping doesn’t invalidate existing cache in any way.</p> |
| <p>This can help determining if a background source recording job is needed to |
| write cache for sources and if a test stream service is needed to serve the |
| cache.</p> |
| <p>Throughout the check, if source-to-cache has changed from the last check, it |
| also cleans up the invalidated cache early on.</p> |
| </dd></dl> |
| |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="apache_beam.runners.interactive.background_caching_job.attempt_to_cancel_background_caching_job"> |
| <span class="sig-prename descclassname"><span class="pre">apache_beam.runners.interactive.background_caching_job.</span></span><span class="sig-name descname"><span class="pre">attempt_to_cancel_background_caching_job</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">user_pipeline</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/runners/interactive/background_caching_job.html#attempt_to_cancel_background_caching_job"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.runners.interactive.background_caching_job.attempt_to_cancel_background_caching_job" title="Link to this definition"></a></dt> |
| <dd><p>Attempts to cancel background source recording job for a user-defined |
| pipeline.</p> |
| <p>If no background source recording job needs to be cancelled, NOOP. Otherwise, |
| cancel such job.</p> |
| </dd></dl> |
| |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="apache_beam.runners.interactive.background_caching_job.attempt_to_stop_test_stream_service"> |
| <span class="sig-prename descclassname"><span class="pre">apache_beam.runners.interactive.background_caching_job.</span></span><span class="sig-name descname"><span class="pre">attempt_to_stop_test_stream_service</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">user_pipeline</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/runners/interactive/background_caching_job.html#attempt_to_stop_test_stream_service"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.runners.interactive.background_caching_job.attempt_to_stop_test_stream_service" title="Link to this definition"></a></dt> |
| <dd><p>Attempts to stop the gRPC server/service serving the test stream.</p> |
| <p>If there is no such server started, NOOP. Otherwise, stop it.</p> |
| </dd></dl> |
| |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="apache_beam.runners.interactive.background_caching_job.is_a_test_stream_service_running"> |
| <span class="sig-prename descclassname"><span class="pre">apache_beam.runners.interactive.background_caching_job.</span></span><span class="sig-name descname"><span class="pre">is_a_test_stream_service_running</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">user_pipeline</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/runners/interactive/background_caching_job.html#is_a_test_stream_service_running"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.runners.interactive.background_caching_job.is_a_test_stream_service_running" title="Link to this definition"></a></dt> |
| <dd><p>Checks to see if there is a gPRC server/service running that serves the |
| test stream to any job started from the given user_pipeline.</p> |
| </dd></dl> |
| |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="apache_beam.runners.interactive.background_caching_job.is_source_to_cache_changed"> |
| <span class="sig-prename descclassname"><span class="pre">apache_beam.runners.interactive.background_caching_job.</span></span><span class="sig-name descname"><span class="pre">is_source_to_cache_changed</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">user_pipeline</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">update_cached_source_signature</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">True</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/runners/interactive/background_caching_job.html#is_source_to_cache_changed"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.runners.interactive.background_caching_job.is_source_to_cache_changed" title="Link to this definition"></a></dt> |
| <dd><p>Determines if there is any change in the sources that need to be cached |
| used by the user-defined pipeline.</p> |
| <p>Due to the expensiveness of computations and for the simplicity of usage, this |
| function is not idempotent because Interactive Beam automatically discards |
| previously tracked signature of transforms and tracks the current signature of |
| transforms for the user-defined pipeline if there is any change.</p> |
| <p>When it’s True, there is addition/deletion/mutation of source transforms that |
| requires a new background source recording job.</p> |
| </dd></dl> |
| |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="apache_beam.runners.interactive.background_caching_job.extract_source_to_cache_signature"> |
| <span class="sig-prename descclassname"><span class="pre">apache_beam.runners.interactive.background_caching_job.</span></span><span class="sig-name descname"><span class="pre">extract_source_to_cache_signature</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">user_pipeline</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/runners/interactive/background_caching_job.html#extract_source_to_cache_signature"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#apache_beam.runners.interactive.background_caching_job.extract_source_to_cache_signature" title="Link to this definition"></a></dt> |
| <dd><p>Extracts a set of signature for sources that need to be cached in the |
| user-defined pipeline.</p> |
| <p>A signature is a str representation of urn and payload of a source.</p> |
| </dd></dl> |
| |
| </section> |
| |
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