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.55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item"><a class="breadcrumbs__link" itemprop="item" href="/docs/metadata-ingestion/source_overview"><span itemprop="name">Sources</span></a><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">Dagster</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>Dagster Integration</h1><p>This connector supports extracting:</p><ul><li>Dagster Pipeline and Task Metadata</li><li>Pipeline Run Status</li><li>Table Lineage</li></ul><p>from Dagster.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="supported-versions">Supported Versions<a href="#supported-versions" class="hash-link" aria-label="Direct link to Supported Versions" title="Direct link to Supported Versions">​</a></h2><p>This integration was verified using Dagster 1.7.0+. That does not necessary mean it will not be compatible will older versions.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="using-datahubs-dagster-sensor">Using DataHub&#x27;s Dagster Sensor<a href="#using-datahubs-dagster-sensor" class="hash-link" aria-label="Direct link to Using DataHub&#x27;s Dagster Sensor" title="Direct link to Using DataHub&#x27;s Dagster Sensor">​</a></h2><p>Dagster Sensors allow us to perform actions when important events occur in Dagster. DataHub&#x27;s Dagster Sensor allows you to emit metadata after every Dagster pipeline run. This sensor can emit Pipelines, Tasks, and run results. For more details about Dagster Sensors, please refer to <a href="https://docs.dagster.io/concepts/partitions-schedules-sensors/sensors" target="_blank" rel="noopener noreferrer">the documentation</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><ol><li>Create a Dagster project. See <a href="https://docs.dagster.io/getting-started/create-new-project" target="_blank" rel="noopener noreferrer">Create New Project</a>.</li><li>Create a <a href="https://docs.dagster.io/_apidocs/definitions#dagster.Definitions" target="_blank" rel="noopener noreferrer">Definitions</a> class or <a href="https://docs.dagster.io/concepts/repositories-workspaces/repositories#repositories" target="_blank" rel="noopener noreferrer">Repositories</a>.</li><li>The creation of a new Dagster project via the UI uses the Definition class to define Dagster pipelines.</li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="setup">Setup<a href="#setup" class="hash-link" aria-label="Direct link to Setup" title="Direct link to Setup">​</a></h3><ol><li><p>Install the DataHub Dagster plugin package:</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">pip </span><span class="token function" style="color:rgb(130, 170, 255)">install</span><span class="token plain"> acryl_datahub_dagster_plugin</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></li><li><p>Import the DataHub Dagster Sensor, which is provided in the plugin package, to your Dagster Definition or Repository before starting the Dagster UI:</p><p><strong>Example Definitions Class:</strong></p><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">from</span><span class="token plain"> dagster </span><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> Definitions</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">ingestion</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">graph</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">client </span><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> DatahubClientConfig</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_dagster_plugin</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">sensors</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">datahub_sensors </span><span class="token keyword" style="font-style:italic">import</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"> DatahubDagsterSourceConfig</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"> make_datahub_sensor</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">config </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> DatahubDagsterSourceConfig</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"> datahub_client_config</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain">DatahubClientConfig</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"> server</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;https://your_datahub_url/gms&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> token</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;your_datahub_token&quot;</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"> dagster_url</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;https://my-dagster-cloud.dagster.cloud&quot;</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">datahub_sensor </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> make_datahub_sensor</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">config</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain">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" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">defs </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> Definitions</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"> sensors</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">datahub_sensor</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"></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></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></li><li><p>The DataHub Dagster plugin-provided sensor internally uses the following configurations. You can override the default config values using environment variables.</p><p><strong>Configuration options:</strong></p><table><thead><tr><th>Configuration Option</th><th>Default Value</th><th>Description</th></tr></thead><tbody><tr><td>datahub_client_config</td><td></td><td>The DataHub client config</td></tr><tr><td>dagster_url</td><td></td><td>The URL to your Dagster Webserver.</td></tr><tr><td>capture_asset_materialization</td><td>True</td><td>Whether to capture asset keys as DataHub Datasets on AssetMaterialization event</td></tr><tr><td>capture_input_output</td><td>True</td><td>Whether to capture and try to parse input and output from HANDLED_OUTPUT, LOADED_INPUT events. (currently only <a href="https://github.com/dagster-io/dagster/blob/7e08c05dcecef9fd07f887c7846bd1c9a90e7d84/python_modules/dagster/dagster/_core/definitions/metadata/__init__.py#L655" target="_blank" rel="noopener noreferrer">PathMetadataValue</a> metadata supported (EXPERIMENTAL)</td></tr><tr><td>platform_instance</td><td></td><td>The instance of the platform that all assets produced by this recipe belong to. It is optional</td></tr><tr><td>asset_lineage_extractor</td><td></td><td>You can implement your own logic to capture asset lineage information. See example for details[]</td></tr><tr><td>enable_asset_query_metadata_parsing</td><td></td><td>Whether to enable parsing query from asset metadata. See below for details[]</td></tr></tbody></table></li><li><p>Once the Dagster UI is running, turn on the provided Sensor execution. To turn on the Sensor, click on the <strong>Overview</strong> tab and then on the <strong>Sensors</strong> tab. Simply toggle the DataHub sensor on.</p></li></ol><p>Woohoo! Now, the DataHub Sensor is ready to emit metadata after every pipeline run.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="how-to-validate-installation">How to Validate Installation<a href="#how-to-validate-installation" class="hash-link" aria-label="Direct link to How to Validate Installation" title="Direct link to How to Validate Installation">​</a></h3><ol><li><p>Navigate to the Dagster UI.</p></li><li><p>Go to <strong>Overview</strong> &gt; <strong>Sensors</strong> and look for <code>datahub_sensor</code>.</p></li><li><p>Start a Dagster Job. In the daemon logs, you should see DataHub-related log messages:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">datahub_sensor - Emitting metadata...</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>This means that DataHub&#x27;s sensor is correctly configured to emit metadata to DataHub.</p></li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="capturing-table-lineage">Capturing Table Lineage<a href="#capturing-table-lineage" class="hash-link" aria-label="Direct link to Capturing Table Lineage" title="Direct link to Capturing Table Lineage">​</a></h2><p>There are a few ways to extract lineage, or relationships between tables, from Dagster. We recommend one or more of the following approaches to extract lineage automatically.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="extracting-lineage-from-sql-queries">Extracting Lineage from SQL Queries<a href="#extracting-lineage-from-sql-queries" class="hash-link" aria-label="Direct link to Extracting Lineage from SQL Queries" title="Direct link to Extracting Lineage from SQL Queries">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="but-first-extracting-asset-identifiers">But First: Extracting Asset Identifiers<a href="#but-first-extracting-asset-identifiers" class="hash-link" aria-label="Direct link to But First: Extracting Asset Identifiers" title="Direct link to But First: Extracting Asset Identifiers">​</a></h4><p>When naming Dagster Assets, we recommend the following structure:</p><p><code>key_prefix=[&quot;env&quot;, &quot;platform&quot;, &quot;db_name&quot;, &quot;schema_name&quot;]</code></p><p>This ensures that we correctly resolve the Asset name to a Dataset URN in DataHub.</p><p>For example:</p><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 decorator annotation punctuation" style="color:rgb(199, 146, 234)">@asset</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"> key_prefix</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 string" style="color:rgb(195, 232, 141)">&quot;prod&quot;</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)">&quot;snowflake&quot;</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)">&quot;db_name&quot;</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)">&quot;schema_name&quot;</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"># the fqdn asset name to be able to identify platform and make sure the asset is unique</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> deps</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">iris_dataset</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"></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>If you properly name your Dagster Asset, you can establish a connection between the Asset and the dataset it is referring to, which is likely already stored in DataHub. This allows for accurate tracking and lineage information in the next steps.</p><p>If you follow a different naming convention, you can create your own <code>asset_keys_to_dataset_urn_converter</code> logic and set a custom callback function. This can be used to generate a DataHub Dataset URN in any way you please, from metadata or otherwise.</p><p>Here is an example that can create a DataHub URN from the Asset key naming convention specified above:</p><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">def</span><span class="token plain"> </span><span class="token function" style="color:rgb(130, 170, 255)">asset_keys_to_dataset_urn_converter</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"> self</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> asset_key</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> Sequence</span><span class="token punctuation" style="color:rgb(199, 146, 234)">[</span><span class="token builtin" style="color:rgb(130, 170, 255)">str</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><span class="token operator" style="color:rgb(137, 221, 255)">-</span><span class="token operator" style="color:rgb(137, 221, 255)">&gt;</span><span class="token plain"> Optional</span><span class="token punctuation" style="color:rgb(199, 146, 234)">[</span><span class="token plain">DatasetUrn</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"> </span><span class="token triple-quoted-string string" style="color:rgb(195, 232, 141)">&quot;&quot;&quot;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token triple-quoted-string string" style="color:rgb(195, 232, 141)"> Convert asset key to dataset urn</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token triple-quoted-string string" style="display:inline-block;color:rgb(195, 232, 141)"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token triple-quoted-string string" style="color:rgb(195, 232, 141)"> By default, we assume the following asset key structure:</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token triple-quoted-string string" style="color:rgb(195, 232, 141)"> key_prefix=[&quot;prod&quot;, &quot;snowflake&quot;, &quot;db_name&quot;, &quot;schema_name&quot;]</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token triple-quoted-string string" style="color:rgb(195, 232, 141)"> &quot;&quot;&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token keyword" style="font-style:italic">if</span><span class="token plain"> </span><span class="token builtin" style="color:rgb(130, 170, 255)">len</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">asset_key</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">&gt;=</span><span class="token plain"> </span><span class="token number" style="color:rgb(247, 140, 108)">3</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 keyword" style="font-style:italic">return</span><span class="token plain"> DatasetUrn</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"> platform</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain">asset_key</span><span class="token punctuation" style="color:rgb(199, 146, 234)">[</span><span class="token number" style="color:rgb(247, 140, 108)">1</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"> env</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain">asset_key</span><span class="token punctuation" style="color:rgb(199, 146, 234)">[</span><span class="token number" style="color:rgb(247, 140, 108)">0</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"> name</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;.&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">join</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">asset_key</span><span class="token punctuation" style="color:rgb(199, 146, 234)">[</span><span class="token number" style="color:rgb(247, 140, 108)">2</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 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"> </span><span class="token keyword" style="font-style:italic">else</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 keyword" style="font-style:italic">return</span><span class="token plain"> </span><span class="token boolean" style="color:rgb(255, 88, 116)">None</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>DataHub&#x27;s Dagster integration can automatically detect dataset inputs and outputs for Software Defined Assets by analyzing the SQL queries it executes. To enable this feature, simply add the executed query to the Asset Metadata using the <code>Query</code> tag.</p><p>Here&#x27;s an example of a Software Defined Asset with an annotated Query:</p><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 decorator annotation punctuation" style="color:rgb(199, 146, 234)">@asset</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">key_prefix</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 string" style="color:rgb(195, 232, 141)">&quot;prod&quot;</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)">&quot;snowflake&quot;</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)">&quot;db_name&quot;</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)">&quot;schema_name&quot;</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"></span><span class="token keyword" style="font-style:italic">def</span><span class="token plain"> </span><span class="token function" style="color:rgb(130, 170, 255)">my_asset_table_a</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">snowflake</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> SnowflakeResource</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">-</span><span class="token operator" style="color:rgb(137, 221, 255)">&gt;</span><span class="token plain"> MaterializeResult</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"> query </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> </span><span class="token triple-quoted-string string" style="color:rgb(195, 232, 141)">&quot;&quot;&quot;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token triple-quoted-string string" style="color:rgb(195, 232, 141)"> create or replace table db_name.schema_name.my_asset_table_a as (</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token triple-quoted-string string" style="color:rgb(195, 232, 141)"> SELECT *</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token triple-quoted-string string" style="color:rgb(195, 232, 141)"> FROM db_name.schema_name.my_asset_table_b</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token triple-quoted-string string" style="color:rgb(195, 232, 141)"> );</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token triple-quoted-string string" style="color:rgb(195, 232, 141)"> &quot;&quot;&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token keyword" style="font-style:italic">with</span><span class="token plain"> snowflake</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">get_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><span class="token keyword" style="font-style:italic">as</span><span class="token plain"> connection</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 keyword" style="font-style:italic">with</span><span class="token plain"> connection</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">cursor</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 keyword" style="font-style:italic">as</span><span class="token plain"> cursor</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"> cursor</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">execute</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">query</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 keyword" style="font-style:italic">return</span><span class="token plain"> MaterializeResult</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</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)">&quot;Query&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> MetadataValue</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">text</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">query</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"> </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><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>In this example, the plugin will automatically identify and set the upstream lineage as <code>db_name.schema_name.my_asset_table_b</code>.</p><p>Note: Proper asset naming is crucial, as the query parser determines the query language from the generated URN. In the example above, it will be <code>snowflake</code>.</p><p>For a complete example job, refer to the <a href="https://github.com/datahub-project/datahub/blob/master/metadata-ingestion-modules/dagster-plugin/examples/iris.py" target="_blank" rel="noopener noreferrer">iris.py file</a> in the DataHub repository.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="extracting-lineage-using-snowflakepandasiomanager">Extracting Lineage using SnowflakePandasIOManager<a href="#extracting-lineage-using-snowflakepandasiomanager" class="hash-link" aria-label="Direct link to Extracting Lineage using SnowflakePandasIOManager" title="Direct link to Extracting Lineage using SnowflakePandasIOManager">​</a></h3><p>The plugin offers an extended version of base SnowflakePandasIOManager provided by Dagster called <code>DataHubSnowflakePandasIOManager</code>. This version automatically captures Snowflake assets created by the IO manager and adds DataHub URN and links to the assets in Dagster.</p><p>To use it, simply replace <code>SnowflakePandasIOManager</code> with <code>DataHubSnowflakePandasIOManager</code>. The enhanced version accepts two additional parameters:</p><ol><li><code>datahub_base_url</code>: The base URL of the DataHub UI, used to generate direct links to Snowflake Datasets in DataHub. If not set, no URL will be generated.</li><li><code>datahub_env</code>: The DataHub environment to use when generating URNs. Defaults to <code>PROD</code> if not specified.</li></ol><p>Example usage:</p><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">from</span><span class="token plain"> datahub_dagster_plugin</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">modules</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">snowflake_pandas</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">datahub_snowflake_pandas_io_manager </span><span class="token keyword" style="font-style:italic">import</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"> DataHubSnowflakePandasIOManager</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"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># ...</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">resources</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)">&quot;snowflake_io_manager&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> DataHubSnowflakePandasIOManager</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"> database</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;MY_DB&quot;</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"> account</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;my_snowflake_account&quot;</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"> warehouse</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;MY_WAREHOUSE&quot;</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"> user</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;my_user&quot;</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"> password</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;my_password&quot;</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"> role</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;my_role&quot;</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"> datahub_base_url</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;http://localhost:9002&quot;</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 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><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="using-dagster-ins-and-out">Using Dagster Ins and Out<a href="#using-dagster-ins-and-out" class="hash-link" aria-label="Direct link to Using Dagster Ins and Out" title="Direct link to Using Dagster Ins and Out">​</a></h3><p>We can provide inputs and outputs to both Assets and Ops explicitly using a dictionary of <code>Ins</code> and <code>Out</code> corresponding to the decorated function arguments. While providing inputs and outputs, we can provide additional metadata as well.</p><p>To create dataset upstream and downstream dependency for the Assets and Ops, you can use an ins and out dictionary with metadata provided. For reference, look at the sample jobs created using assets <a href="https://github.com/datahub-project/datahub/blob/master/metadata-ingestion-modules/dagster-plugin/examples/assets_job.py" target="_blank" rel="noopener noreferrer"><code>assets_job.py</code></a>, or ops <a href="https://github.com/datahub-project/datahub/blob/master/metadata-ingestion-modules/dagster-plugin/examples/ops_job.py" target="_blank" rel="noopener noreferrer"><code>ops_job.py</code></a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="using-custom-logic-for-extracting-lineage">Using Custom Logic for Extracting Lineage<a href="#using-custom-logic-for-extracting-lineage" class="hash-link" aria-label="Direct link to Using Custom Logic for Extracting Lineage" title="Direct link to Using Custom Logic for Extracting Lineage">​</a></h3><p>You can define your own logic to capture asset lineage information.</p><p>The output Tuple contains two dictionaries, one for input assets and the other for output assets. The key of the dictionary is the op key and the value is the set of asset URNs that are upstream or downstream of the op.</p><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">from</span><span class="token plain"> datahub_dagster_plugin</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">client</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">dagster_generator </span><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> DagsterGenerator</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> DatasetLineage</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">def</span><span class="token plain"> </span><span class="token function" style="color:rgb(130, 170, 255)">asset_lineage_extractor</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"> context</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> RunStatusSensorContext</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"> dagster_generator</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> DagsterGenerator</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"> graph</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> DataHubGraph</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><span class="token operator" style="color:rgb(137, 221, 255)">-</span><span class="token operator" style="color:rgb(137, 221, 255)">&gt;</span><span class="token plain"> Dict</span><span class="token punctuation" style="color:rgb(199, 146, 234)">[</span><span class="token builtin" style="color:rgb(130, 170, 255)">str</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> DatasetLineage</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"> dataset_lineage</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> Dict</span><span class="token punctuation" style="color:rgb(199, 146, 234)">[</span><span class="token builtin" style="color:rgb(130, 170, 255)">str</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> DatasetLineage</span><span class="token punctuation" style="color:rgb(199, 146, 234)">]</span><span class="token plain"> </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 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"># Extracting input and output assets from the context</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token keyword" style="font-style:italic">return</span><span class="token plain"> dataset_lineage</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><a href="https://github.com/datahub-project/datahub/blob/master/metadata-ingestion-modules/dagster-plugin/examples/advanced_ops_jobs.py" target="_blank" rel="noopener noreferrer">See an example job here</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="debugging">Debugging<a href="#debugging" class="hash-link" aria-label="Direct link to Debugging" title="Direct link to Debugging">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="connection-error-for-datahub-rest-url">Connection Error for DataHub Rest URL<a href="#connection-error-for-datahub-rest-url" class="hash-link" aria-label="Direct link to Connection Error for DataHub Rest URL" title="Direct link to Connection Error for DataHub Rest URL">​</a></h3><p>If you get <code>ConnectionError: HTTPConnectionPool(host=&#x27;localhost&#x27;, port=8080)</code>, then in that case your DataHub GMS service is not up.</p></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="slackUtm_uoBr"><div class="slackUtm_uoBr"><hr>Need more help? 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