Connect to Discourse Data from a Connection Pool in Jetty

The CData JDBC driver for Discourse is easy to integrate with Java Web applications. This article shows how to efficiently connect to Discourse data in Jetty by configuring the driver for connection pooling. You will configure a JNDI resource for Discourse in Jetty.

Configure the JDBC Driver for Salesforce as a JNDI Data Source

Follow the steps below to connect to Salesforce from Jetty.

1. Enable the JNDI module for your Jetty base. The following command enables JNDI from the command-line:

   java -jar ../start.jar --add-to-startd=jndi
   

2. Add the CData and license file, located in the lib subfolder of the installation directory, into the lib subfolder of the context path.

3. Declare the resource and its scope. Enter the required connection properties in the resource declaration. This example declares the Discourse data source at the level of the Web app, in WEB-INF\jetty-env.xml.

   
   <Configure id='discoursedemo' class="org.eclipse.jetty.webapp.WebAppContext">
       <New id="discoursedemo" class="org.eclipse.jetty.plus.jndi.Resource">
       <Arg><Ref refid="discoursedemo"/></Arg>
       <Arg>jdbc/discoursedb</Arg>
       <Arg>
         <New class="cdata.jdbc.api.APIDriver">
           <Set name="url">jdbc:api:</Set>
           <Set name="Profile">C:\profiles\Discourse.apip</Set>
           <Set name="ProfileSettings">'Domain</Set>
           <Set name="APIKey">your_api_key</Set>
           <Set name="Username">your_username</Set>
           <Set name="'AuthScheme">APIKey</Set>
         </New>
       </Arg>
     </New>
   </Configure>
   

   The Discourse API uses API Key authentication.

   Using API Key Authentication

   Discourse requires API Key and Username for authentication. API Keys are generated in the Discourse Admin panel under the API section. You can create user-specific API keys or all-users API keys. Once you have obtained the API Key, set it along with the Domain and Username in the ProfileSettings connection property.

   Example Connection string

   Profile=C:\profiles\Discourse.apip;ProfileSettings='Domain=forum.example.com;APIKey=your_api_key;Username=your_username;'AuthScheme=APIKey;
   

4. Configure the resource in the Web.xml:

   
     jdbc/discoursedb
     javax.sql.DataSource
     Container
   
   

5. You can then access Discourse with a lookup to java:comp/env/jdbc/discoursedb:

   InitialContext ctx = new InitialContext();
   DataSource mydiscourse = (DataSource)ctx.lookup("java:comp/env/jdbc/discoursedb");
   

More Jetty Integration

The steps above show how to configure the driver in a simple connection pooling scenario. For more use cases and information, see the Working with Jetty JNDI chapter in the Jetty documentation.