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class="margin-top--md">For up-to-date documentation, see the <b><a href="/docs/latest/deployment/engine_conn_plugin_installation">latest version</a></b> (<!-- -->1.1.2<!-- -->).</div></div><div class="docItemContainer_oiyr"><article><span class="theme-doc-version-badge badge badge--secondary">Version: <!-- -->1.1.1</span><div class="tocCollapsible_aw-L theme-doc-toc-mobile tocMobile_Tx6Y"><button type="button" class="clean-btn tocCollapsibleButton_zr6a">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>EngineConnPlugin installation</h1></header><p>This article mainly introduces the use of Linkis EngineConnPlugins, mainly from the aspects of compilation and installation.</p><h2><a aria-hidden="true" tabindex="-1" class="anchor anchor__h2 anchorWithStickyNavbar_y2LR" id="1-compilation-and-packaging-of-engineconnplugins"></a>1. Compilation and packaging of EngineConnPlugins<a class="hash-link" href="#1-compilation-and-packaging-of-engineconnplugins" title="Direct link to heading">#</a></h2><p>After Linkis 1.0, the engine is managed by EngineConnManager, and the EngineConnPlugin (ECP) supports real-time effectiveness. |
| In order to facilitate the EngineConnManager to be loaded into the corresponding EngineConnPlugin by labels, it needs to be packaged according to the following directory structure (take hive as an example):</p><div class="codeBlockContainer_J+bg"><div class="codeBlockContent_csEI"><pre tabindex="0" class="prism-code language-undefined codeBlock_rtdJ thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_1zSZ"><span class="token-line" style="color:#F8F8F2"><span class="token plain">hive: engine home directory, must be the name of the engine</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">└── dist # Dependency and configuration required for engine startup, different versions of the engine need to be in this directory to prevent the corresponding version directory</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> └── v1.2.1 #Must start with ‘v’ and add engine version number ‘1.2.1’</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> └── conf # Configuration file directory required by the engine</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> └── lib # Dependency package required by EngineConnPlugin</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">└── plugin #EngineConnPlugin directory, this directory is used for engine management service package engine startup command and resource application</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> └── 1.2.1 # Engine version</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> └── linkis-engineplugin-hive-1.0.0-RC1.jar #Engine module package (only need to place a separate engine package)</span></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_M3SB clean-btn">Copy</button></div></div><p>If you are adding a new engine, you can refer to hive's assembly configuration method, source code directory: linkis-engineconn-plugins/engineconn-plugins/hive/src/main/assembly/distribution.xml</p><h2><a aria-hidden="true" tabindex="-1" class="anchor anchor__h2 anchorWithStickyNavbar_y2LR" id="2-engine-installation"></a>2. Engine Installation<a class="hash-link" href="#2-engine-installation" title="Direct link to heading">#</a></h2><h3><a aria-hidden="true" tabindex="-1" class="anchor anchor__h3 anchorWithStickyNavbar_y2LR" id="21-plugin-package-installation"></a>2.1 Plugin package installation<a class="hash-link" href="#21-plugin-package-installation" title="Direct link to heading">#</a></h3><p>1.First, confirm the dist directory of the engine: wds.linkis.engineconn.home (get the value of this parameter from ${LINKIS_HOME}/conf/linkis.properties), this parameter is used by EngineConnPluginServer to read the configuration file that the engine depends on And third-party Jar packages. If the parameter (wds.linkis.engineconn.dist.load.enable=true) is set, the engine in this directory will be automatically read and loaded into the Linkis BML (material library).</p><p>2.Second, confirm the engine Jar package directory: |
| wds.linkis.engineconn.plugin.loader.store.path, which is used by EngineConnPluginServer to read the actual implementation Jar of the engine.</p><p>It is highly recommended specifying <strong>wds.linkis.engineconn.home and wds.linkis.engineconn.plugin.loader.store.path as</strong> the same directory, so that you can directly unzip the engine ZIP package exported by maven into this directory, such as: Place it in the ${LINKIS_HOME}/lib/linkis-engineconn-plugins directory.</p><div class="codeBlockContainer_J+bg"><div class="codeBlockContent_csEI"><pre tabindex="0" class="prism-code language-undefined codeBlock_rtdJ thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_1zSZ"><span class="token-line" style="color:#F8F8F2"><span class="token plain">${LINKIS_HOME}/lib/linkis-engineconn-plugins:</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">└── hive</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> └── dist</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> └── plugin</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">└── spark</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> └── dist</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> └── plugin</span></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_M3SB clean-btn">Copy</button></div></div><p>If the two parameters do not point to the same directory, you need to place the dist and plugin directories separately, as shown in the following example:</p><div class="codeBlockContainer_J+bg"><div class="codeBlockContent_csEI"><pre tabindex="0" class="prism-code language-undefined codeBlock_rtdJ thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_1zSZ"><span class="token-line" style="color:#F8F8F2"><span class="token plain">## dist directory</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">${LINKIS_HOME}/lib/linkis-engineconn-plugins/dist:</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">└── hive</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> └── dist</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">└── spark</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> └── dist</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">## plugin directory</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">${LINKIS_HOME}/lib/linkis-engineconn-plugins/plugin:</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">└── hive</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> └── plugin</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">└── spark</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> └── plugin</span></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_M3SB clean-btn">Copy</button></div></div><h3><a aria-hidden="true" tabindex="-1" class="anchor anchor__h3 anchorWithStickyNavbar_y2LR" id="22-configuration-modification-of-management-console-optional"></a>2.2 Configuration modification of management console (optional)<a class="hash-link" href="#22-configuration-modification-of-management-console-optional" title="Direct link to heading">#</a></h3><p>The configuration of the Linkis1.0 management console is managed according to the engine label. If the new engine has configuration parameters, you need to insert the corresponding configuration parameters in the Configuration, and you need to insert the parameters in three tables:</p><div class="codeBlockContainer_J+bg"><div class="codeBlockContent_csEI"><pre tabindex="0" class="prism-code language-undefined codeBlock_rtdJ thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_1zSZ"><span class="token-line" style="color:#F8F8F2"><span class="token plain">linkis_configuration_config_key: Insert the key and default values of the configuration parameters of the engin</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">linkis_manager_label: Insert engine label such as hive-1.2.1</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">linkis_configuration_category: Insert the catalog relationship of the engine</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">linkis_configuration_config_value: Insert the configuration that the engine needs to display</span></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_M3SB clean-btn">Copy</button></div></div><p>If it is an existing engine and a new version is added, you can modify the version of the corresponding engine in the linkis_configuration_dml.sql file for execution</p><h3><a aria-hidden="true" tabindex="-1" class="anchor anchor__h3 anchorWithStickyNavbar_y2LR" id="23-engine-refresh"></a>2.3 Engine refresh<a class="hash-link" href="#23-engine-refresh" title="Direct link to heading">#</a></h3><ol><li><p>The engine supports real-time refresh. After the engine is placed in the corresponding directory, Linkis1.0 provides a method to load the engine without shutting down the server, and just send a request to the linkis-engineconn-plugin-server service through the restful interface, that is, the actual deployment of the service Ip+port, the request interface is http://ip:port/api/rest_j/v1/rpc/receiveAndReply, the request method is POST, the request body is {"method":"/enginePlugin/engineConn/refreshAll"}.</p></li><li><p>Restart refresh: the engine catalog can be forced to refresh by restarting</p></li></ol><div class="codeBlockContainer_J+bg"><div class="codeBlockContent_csEI"><pre tabindex="0" class="prism-code language-undefined codeBlock_rtdJ thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_1zSZ"><span class="token-line" style="color:#F8F8F2"><span class="token plain">### cd to the sbin directory, restart linkis-engineconn-plugin-server</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">cd /Linkis1.0.0/sbin</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">## Execute linkis-daemon script</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">sh linkis-daemon.sh restart linkis-engine-plugin-server</span></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_M3SB clean-btn">Copy</button></div></div><p>3.Check whether the engine refresh is successful: If you encounter problems during the refresh process and need to confirm whether the refresh is successful, you can check whether the last_update_time of the linkis_engine_conn_plugin_bml_resources table in the database is the time when the refresh is triggered.</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/incubator-linkis-website/edit/dev/versioned_docs/version-1.1.1/deployment/engine_conn_plugin_installation.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_mS5F" 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_mt2f"></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages navigation"><div class="pagination-nav__item"><a class="pagination-nav__link" href="/docs/1.1.1/deployment/cluster_deployment"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">« <!-- -->Cluster Deployment</div></a></div><div class="pagination-nav__item pagination-nav__item--next"><a class="pagination-nav__link" href="/docs/1.1.1/deployment/installation_hierarchical_structure"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Installation Directory Structure<!-- --> »</div></a></div></nav></div></div><div class="col col--3"><div class="tableOfContents_vrFS thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#1-compilation-and-packaging-of-engineconnplugins" class="table-of-contents__link">1. Compilation and packaging of EngineConnPlugins</a></li><li><a href="#2-engine-installation" class="table-of-contents__link">2. Engine Installation</a><ul><li><a href="#21-plugin-package-installation" class="table-of-contents__link">2.1 Plugin package installation</a></li><li><a href="#22-configuration-modification-of-management-console-optional" class="table-of-contents__link">2.2 Configuration modification of management console (optional)</a></li><li><a href="#23-engine-refresh" class="table-of-contents__link">2.3 Engine refresh</a></li></ul></li></ul></div></div></div></div></main></div></div><footer class="footer"><div class="container"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Linkis</div><ul class="footer__items"><li class="footer__item"><a class="footer__link-item" href="/docs/latest/introduction">Document</a></li><li class="footer__item"><a class="footer__link-item" href="/faq/main">FAQ</a></li><li class="footer__item"><a href="https://github.com/apache/incubator-linkis/releases" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>Releases<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li></ul></div><div class="col footer__col"><div class="footer__title">Community</div><ul class="footer__items"><li class="footer__item"><a href="https://github.com/apache/incubator-linkis" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>GitHub<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li><li class="footer__item"><a href="https://github.com/apache/incubator-linkis/issues" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>Issue Tracker<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li><li class="footer__item"><a href="https://github.com/apache/incubator-linkis/pulls" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>Pull Requests<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li></ul></div><div class="col footer__col"><div class="footer__title">Subscribe Mailing List</div><ul class="footer__items"><li class="footer__item"><a class="footer__link-item" href="/community/how-to-subscribe">How to Subscribe</a></li><li class="footer__item"><a href="mailto:dev-subscribe@linkis.apache.org" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>Subscribe Mail<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li><li class="footer__item"><a href="https://lists.apache.org/list.html?dev@linkis.apache.org" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>Mail Archive<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright"><div><img style="height:50px" alt="Apache Software Foundation" src="/img/incubator-logo.svg"><p style="color: #999999; padding: 0 20px 30px;font-weight:400;text-align:left">Apache Linkis is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator. 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