Installing Features Using POM Files

Follow the steps below to install a feature to WSO2 EI using a new feature installed distribution.

1. Install Maven3 and Ant.

2. Create a directory and copy the pom.xml file given below.
   

   This example provides a sample pom.xml file to create a new feature installed distribution, which uses the default profile (<profile>default</profile>) and the corresponding directory path (dir="<PRODUCT_NAME>/repository/components/default/configuration/org.eclipse.equinox.simpleconfigurator">).

   You need to update the following values:

   • The name of your product should replace <PRODUCT_HOME>(e.g., EI-6.0.0).
   • The relevant profile (e.g., default, worker) should replace $profile. For more information about server profiles, see Creating New Server Profiles in WSO2 Carbon documentation.
   • Value of the <destination> element should be wso2ei-6.0.0/wso2/components.
   • Value of the dir attribute in the <replace> element should be wso2ei-6.0.0/wso2/components/default/configuration/org.eclipse.equinox.simpleconfigurator.

   For more information on the plugins, see maven-antrun-plugin and Carbon P2 plugin.

   <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
       <modelVersion>4.0.0</modelVersion>
       <groupId>org.wso2.sample</groupId>
       <artifactId>sample-feature-installation</artifactId>
       <version>1.0.0</version>
       <packaging>pom</packaging>
       <name>New feature</name>
       <url>http://wso2.org</url>
       <build>
           <plugins>
               <plugin>
                   <groupId>org.wso2.maven</groupId>
                   <artifactId>carbon-p2-plugin</artifactId>
                   <version>1.5.4</version>
                   <executions>
                       <execution>
                           <id>feature-install</id>
                           <phase>package</phase>
                           <goals>
                               <goal>p2-profile-gen</goal>
                           </goals>
                           <configuration>
                               <profile>default</profile>
                               <metadataRepository>file:p2-repo</metadataRepository>
                               <artifactRepository>file:p2-repo</artifactRepository>
                               <destination>$distribution_name/repository/components</destination>
                               <deleteOldProfileFiles>false</deleteOldProfileFiles>
                               <features>
                                   <feature>
                                       <id>org.wso2.carbon.tryit.feature.group</id>
                                       <version>4.3.0</version>
                                   </feature>
                               </features>
                           </configuration>
                       </execution>
                   </executions>
               </plugin>
               <plugin>
                   <groupId>org.apache.maven.plugins</groupId>
                   <artifactId>maven-antrun-plugin</artifactId>
                   <version>1.1</version>
                   <executions>
                       <execution>
                           <phase>package</phase>
                           <configuration>
                               <tasks>
                                   <replace token="false" value="true" dir="$distribution_name/repository/components/default/configuration/org.eclipse.equinox.simpleconfigurator">
                                       <include name="**/bundles.info"/>
                                   </replace>
                               </tasks>
                           </configuration>
                           <goals>
                               <goal>run</goal>
                           </goals>
                       </execution>
                   </executions>
               </plugin>
           </plugins>
       </build>
       <repositories>
           <repository>
               <id>wso2-nexus</id>
               <name>WSO2 internal Repository</name>
               <url>http://maven.wso2.org/nexus/content/groups/wso2-public/</url>
               <releases>
                   <enabled>true</enabled>
                   <updatePolicy>daily</updatePolicy>
                   <checksumPolicy>ignore</checksumPolicy>
               </releases>
           </repository>
       </repositories>
       <pluginRepositories>
           <pluginRepository>
               <id>wso2-maven-releases-repository</id>
               <url>http://maven.wso2.org/nexus/content/repositories/releases/</url>
           </pluginRepository>
           <pluginRepository>
               <id>wso2-maven-snapshots-repository</id>
               <url>http://maven.wso2.org/nexus/content/repositories/snapshots/</url>
           </pluginRepository>
       </pluginRepositories>
   </project>

3. Unzip the original product distribution (e.g., wso2carbon-<version>.zip) and the relevant p2 repository (e.g., http://product-dist.wso2.com/p2/carbon/releases/wilkes/) to the same directory location. 
4. Replace the $distribution_name params found in pom.xml file, with the unzipped product distribution name (e.g., wso2carbon-<version>) 

5. In the pom.xml file list down the features you want to install into the system. 
   Example:
   

    <feature> 
      <id>org.wso2.carbon.tryit.feature.group</id> 
      <version>4.3.0</version> 
   </feature>

6. Execute the following command:
   

   mvn clean install

   Upon successful invocation of the build, the product distribution is provisioned with the new features. This approach is scriptable.