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category 'Community'" type="button" class="clean-btn menu__caret"></button></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/releases">Release History</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label="Breadcrumbs"><ul class="breadcrumbs" itemscope="" itemtype="https://schema.org/BreadcrumbList"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_YNFT"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">Python SDK</span><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Python Emitter</span><meta itemprop="position" content="2"></li></ul></nav><span class="theme-doc-version-badge badge badge--secondary">Version: Next</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><h1>Python Emitter</h1><p>In some cases, you might want to construct Metadata events directly and use programmatic ways to emit that metadata to DataHub. Use-cases are typically push-based and include emitting metadata events from CI/CD pipelines, custom orchestrators etc.</p><p>The <code>acryl-datahub</code> Python package offers REST and Kafka emitter API-s, which can easily be imported and called from your own code.</p><blockquote><p><strong>Pro Tip!</strong> Throughout our API guides, we have examples of using Python API SDK.
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||
Lookout for the <code>| Python |</code> tab within our tutorials.</p></blockquote><h2 class="anchor anchorWithStickyNavbar_LWe7" id="installation">Installation<a href="#installation" class="hash-link" aria-label="Direct link to Installation" title="Direct link to Installation"></a></h2><p>Follow the installation guide for the main <code>acryl-datahub</code> package <a href="/docs/metadata-ingestion#install-from-pypi">here</a>. Read on for emitter specific installation instructions.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="rest-emitter">REST Emitter<a href="#rest-emitter" class="hash-link" aria-label="Direct link to REST Emitter" title="Direct link to REST Emitter"></a></h2><p>The REST emitter is a thin wrapper on top of the <code>requests</code> module and offers a blocking interface for sending metadata events over HTTP. Use this when simplicity and acknowledgement of metadata being persisted to DataHub's metadata store is more important than throughput of metadata emission. Also use this when read-after-write scenarios exist, e.g. writing metadata and then immediately reading it back.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="installation-1">Installation<a href="#installation-1" class="hash-link" aria-label="Direct link to Installation" title="Direct link to Installation"></a></h3><div class="language-console codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-console codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">pip install -U `acryl-datahub[datahub-rest]`</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="example-usage">Example Usage<a href="#example-usage" class="hash-link" aria-label="Direct link to Example Usage" title="Direct link to Example Usage"></a></h3><div class="language-python codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-python codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> datahub</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">emitter</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">mce_builder </span><span class="token keyword" style="font-style:italic">as</span><span class="token plain"> builder</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">from</span><span class="token plain"> datahub</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">emitter</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">mcp </span><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> MetadataChangeProposalWrapper</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">from</span><span class="token plain"> datahub</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">metadata</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">schema_classes </span><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> DatasetPropertiesClass</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">from</span><span class="token plain"> datahub</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">emitter</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">rest_emitter </span><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> DatahubRestEmitter</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># Create an emitter to DataHub over REST</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">emitter </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> DatahubRestEmitter</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">gms_server</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token string" style="color:rgb(195, 232, 141)">"http://localhost:8080"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> extra_headers</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># For DataHub Cloud, you will want to point to your DataHub Cloud's server's GMS endpoint</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># emitter = DatahubRestEmitter(gms_server="https://<your-domain>.acryl.io/gms", token="<your token>", extra_headers={})</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># Test the connection</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">emitter</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">test_connection</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># Construct a dataset properties object</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">dataset_properties </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> DatasetPropertiesClass</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">description</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token string" style="color:rgb(195, 232, 141)">"This table stored the canonical User profile"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> customProperties</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"governance"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"ENABLED"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># Construct a MetadataChangeProposalWrapper object.</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">metadata_event </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> MetadataChangeProposalWrapper</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> entityUrn</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain">builder</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">make_dataset_urn</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"bigquery"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"my-project.my-dataset.user-table"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> aspect</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain">dataset_properties</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># Emit metadata! This is a blocking call</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">emitter</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">emit</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">metadata_event</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Other examples:</p><ul><li><a href="https://github.com/datahub-project/datahub/blob/master/metadata-ingestion/examples/library/lineage_emitter_mcpw_rest.py" target="_blank" rel="noopener noreferrer">lineage_emitter_mcpw_rest.py</a> - emits simple bigquery table-to-table (dataset-to-dataset) lineage via REST as MetadataChangeProposalWrapper.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="emitter-code">Emitter Code<a href="#emitter-code" class="hash-link" aria-label="Direct link to Emitter Code" title="Direct link to Emitter Code"></a></h3><p>If you're interested in looking at the REST emitter code, it is available <a href="https://github.com/datahub-project/datahub/blob/master/metadata-ingestion/src/datahub/emitter/rest_emitter.py" target="_blank" rel="noopener noreferrer">here</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="kafka-emitter">Kafka Emitter<a href="#kafka-emitter" class="hash-link" aria-label="Direct link to Kafka Emitter" title="Direct link to Kafka Emitter"></a></h2><p>The Kafka emitter is a thin wrapper on top of the SerializingProducer class from <code>confluent-kafka</code> and offers a non-blocking interface for sending metadata events to DataHub. Use this when you want to decouple your metadata producer from the uptime of your datahub metadata server by utilizing Kafka as a highly available message bus. For example, if your DataHub metadata service is down due to planned or unplanned outages, you can still continue to collect metadata from your mission critical systems by sending it to Kafka. Also use this emitter when throughput of metadata emission is more important than acknowledgement of metadata being persisted to DataHub's backend store.</p><p><strong><em>Note</em></strong>: The Kafka emitter uses Avro to serialize the Metadata events to Kafka. Changing the serializer will result in unprocessable events as DataHub currently expects the metadata events over Kafka to be serialized in Avro.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="installation-2">Installation<a href="#installation-2" class="hash-link" aria-label="Direct link to Installation" title="Direct link to Installation"></a></h3><div class="language-console codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-console codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain"># For emission over Kafka</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">pip install -U `acryl-datahub[datahub-kafka]`</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="example-usage-1">Example Usage<a href="#example-usage-1" class="hash-link" aria-label="Direct link to Example Usage" title="Direct link to Example Usage"></a></h3><div class="language-python codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-python codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> datahub</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">emitter</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">mce_builder </span><span class="token keyword" style="font-style:italic">as</span><span class="token plain"> builder</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">from</span><span class="token plain"> datahub</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">emitter</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">mcp </span><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> MetadataChangeProposalWrapper</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">from</span><span class="token plain"> datahub</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">metadata</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">schema_classes </span><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> DatasetPropertiesClass</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">from</span><span class="token plain"> datahub</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">emitter</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">kafka_emitter </span><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> DatahubKafkaEmitter</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> KafkaEmitterConfig</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># Create an emitter to Kafka</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">kafka_config </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"connection"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"bootstrap"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"localhost:9092"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"schema_registry_url"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"http://localhost:8081"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"schema_registry_config"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># schema_registry configs passed to underlying schema registry client</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"producer_config"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># extra producer configs passed to underlying kafka producer</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">emitter </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> DatahubKafkaEmitter</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> KafkaEmitterConfig</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">parse_obj</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">kafka_config</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># Construct a dataset properties object</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">dataset_properties </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> DatasetPropertiesClass</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">description</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token string" style="color:rgb(195, 232, 141)">"This table stored the canonical User profile"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> customProperties</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"governance"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"ENABLED"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># Construct a MetadataChangeProposalWrapper object.</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">metadata_event </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> MetadataChangeProposalWrapper</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> entityUrn</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain">builder</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">make_dataset_urn</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"bigquery"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"my-project.my-dataset.user-table"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> aspect</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain">dataset_properties</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># Emit metadata! This is a non-blocking call</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">emitter</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">emit</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> metadata_event</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> callback</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token keyword" style="font-style:italic">lambda</span><span class="token plain"> exc</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> message</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">print</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string-interpolation string" style="color:rgb(195, 232, 141)">f"Message sent to topic:</span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token string-interpolation interpolation">message</span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token string-interpolation interpolation">topic</span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token string-interpolation string" style="color:rgb(195, 232, 141)">, partition:</span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token string-interpolation interpolation">message</span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token string-interpolation interpolation">partition</span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token string-interpolation string" style="color:rgb(195, 232, 141)">, offset:</span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token string-interpolation interpolation">message</span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token string-interpolation interpolation">offset</span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token string-interpolation string" style="color:rgb(195, 232, 141)">"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">if</span><span class="token plain"> message </span><span class="token keyword" style="font-style:italic">else</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">print</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string-interpolation string" style="color:rgb(195, 232, 141)">f"Failed to send with: </span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token string-interpolation interpolation">exc</span><span class="token string-interpolation interpolation punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token string-interpolation string" style="color:rgb(195, 232, 141)">"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">#Send all pending events</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">emitter</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">flush</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="emitter-code-1">Emitter Code<a href="#emitter-code-1" class="hash-link" aria-label="Direct link to Emitter Code" title="Direct link to Emitter Code"></a></h3><p>If you're interested in looking at the Kafka emitter code, it is available <a href="https://github.com/datahub-project/datahub/blob/master/metadata-ingestion/src/datahub/emitter/kafka_emitter.py" target="_blank" rel="noopener noreferrer">here</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="other-languages">Other Languages<a href="#other-languages" class="hash-link" aria-label="Direct link to Other Languages" title="Direct link to Other Languages"></a></h2><p>Emitter API-s are also supported for:</p><ul><li><a 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