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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">Databases</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">Using Database Connection UI</span><meta itemprop="position" content="2"></li></ul></nav><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"><p>Here is the documentation on how to leverage the new DB Connection UI. This will provide admins the ability to enhance the UX for users who want to connect to new databases.</p><p><img loading="lazy" src="https://user-images.githubusercontent.com/27827808/125499607-94e300aa-1c0f-4c60-b199-3f9de41060a3.gif" alt="db-conn-docs" class="img_ev3q"></p><p>There are now 3 steps when connecting to a database in the new UI:</p><p>Step 1: First the admin must inform superset what engine they want to connect to. This page is powered by the <code>/available</code> endpoint which pulls on the engines currently installed in your environment, so that only supported databases are shown.</p><p>Step 2: Next, the admin is prompted to enter database specific parameters. Depending on whether there is a dynamic form available for that specific engine, the admin will either see the new custom form or the legacy SQLAlchemy form. We currently have built dynamic forms for (Redshift, MySQL, Postgres, and BigQuery). The new form prompts the user for the parameters needed to connect (for example, username, password, host, port, etc.) and provides immediate feedback on errors.</p><p>Step 3: Finally, once the admin has connected to their DB using the dynamic form they have the opportunity to update any optional advanced settings.</p><p>We hope this feature will help eliminate a huge bottleneck for users to get into the application and start crafting datasets.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="how-to-setup-up-preferred-database-options-and-images">How to setup up preferred database options and images<a href="#how-to-setup-up-preferred-database-options-and-images" class="hash-link" aria-label="Direct link to How to setup up preferred database options and images" title="Direct link to How to setup up preferred database options and images"></a></h3><p>We added a new configuration option where the admin can define their preferred databases, in order:</p><div class="language-python codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><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:#393A34"><span class="token comment" style="color:#999988;font-style:italic"># A list of preferred databases, in order. These databases will be</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic"># displayed prominently in the "Add Database" dialog. You should</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic"># use the "engine_name" attribute of the corresponding DB engine spec</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic"># in `superset/db_engine_specs/`.</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">PREFERRED_DATABASES</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token builtin">list</span><span class="token punctuation" style="color:#393A34">[</span><span class="token builtin">str</span><span class="token punctuation" style="color:#393A34">]</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">[</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token string" style="color:#e3116c">"PostgreSQL"</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token string" style="color:#e3116c">"Presto"</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token string" style="color:#e3116c">"MySQL"</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token string" style="color:#e3116c">"SQLite"</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">]</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>For copyright reasons the logos for each database are not distributed with Superset.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="setting-images">Setting images<a href="#setting-images" class="hash-link" aria-label="Direct link to Setting images" title="Direct link to Setting images"></a></h3><ul><li>To set the images of your preferred database, admins must create a mapping in the <code>superset_text.yml</code> file with engine and location of the image. The image can be host locally inside your static/file directory or online (e.g. S3)</li></ul><div class="language-python codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><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:#393A34"><span class="token plain">DB_IMAGES</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> postgresql</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"path/to/image/postgres.jpg"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> bigquery</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"path/to/s3bucket/bigquery.jpg"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> snowflake</span><span class="token punctuation" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"path/to/image/snowflake.jpg"</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="how-to-add-new-database-engines-to-available-endpoint">How to add new database engines to available endpoint<a href="#how-to-add-new-database-engines-to-available-endpoint" class="hash-link" aria-label="Direct link to How to add new database engines to available endpoint" title="Direct link to How to add new database engines to available endpoint"></a></h3><p>Currently the new modal supports the following databases:</p><ul><li>Postgres</li><li>Redshift</li><li>MySQL</li><li>BigQuery</li></ul><p>When the user selects a database not in this list they will see the old dialog asking for the SQLAlchemy URI. New databases can be added gradually to the new flow. In order to support the rich configuration a DB engine spec needs to have the following attributes:</p><ol><li><code>parameters_schema</code>: a Marshmallow schema defining the parameters needed to configure the database. For Postgres this includes username, password, host, port, etc. (<a href="https://github.com/apache/superset/blob/accee507c0819cd0d7bcfb5a3e1199bc81eeebf2/superset/db_engine_specs/base.py#L1309-L1320" target="_blank" rel="noopener noreferrer">see</a>).</li><li><code>default_driver</code>: the name of the recommended driver for the DB engine spec. Many SQLAlchemy dialects support multiple drivers, but usually one is the official recommendation. For Postgres we use "psycopg2".</li><li><code>sqlalchemy_uri_placeholder</code>: a string that helps the user in case they want to type the URI directly.</li><li><code>encryption_parameters</code>: parameters used to build the URI when the user opts for an encrypted connection. For Postgres this is <code>{"sslmode": "require"}</code>.</li></ol><p>In addition, the DB engine spec must implement these class methods:</p><ul><li><code>build_sqlalchemy_uri(cls, parameters, encrypted_extra)</code>: this method receives the distinct parameters and builds the URI from them.</li><li><code>get_parameters_from_uri(cls, uri, encrypted_extra)</code>: this method does the opposite, extracting the parameters from a given URI.</li><li><code>validate_parameters(cls, parameters)</code>: this method is used for <code>onBlur</code> validation of the form. It should return a list of <code>SupersetError</code> indicating which parameters are missing, and which parameters are definitely incorrect (<a href="https://github.com/apache/superset/blob/accee507c0819cd0d7bcfb5a3e1199bc81eeebf2/superset/db_engine_specs/base.py#L1404" target="_blank" rel="noopener noreferrer">example</a>).</li></ul><p>For databases like MySQL and Postgres that use the standard format of <code>engine+driver://user:password@host:port/dbname</code> all you need to do is add the <code>BasicParametersMixin</code> to the DB engine spec, and then define the parameters 2-4 (<code>parameters_schema</code> is already present in the mixin).</p><p>For other databases you need to implement these methods yourself. The BigQuery DB engine spec is a good example of how to do that.</p></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a href="https://github.com/apache/superset/edit/master/docs/docs/databases/db-connection-ui.mdx" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col lastUpdated_vwxv"></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/docs/databases/docker-add-drivers"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Adding New Drivers in Docker</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/docs/databases/athena"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Amazon Athena</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#how-to-setup-up-preferred-database-options-and-images" class="table-of-contents__link toc-highlight">How to setup up preferred database options and images</a></li><li><a href="#setting-images" class="table-of-contents__link toc-highlight">Setting images</a></li><li><a href="#how-to-add-new-database-engines-to-available-endpoint" class="table-of-contents__link toc-highlight">How to add new database engines to available endpoint</a></li></ul></div></div></div></div></main></div></div><footer class="footer"><div class="container container-fluid"><div class="footer__bottom text--center"><div class="footer__copyright"> |
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