The process engine configuration can be extended through process engine plugins. A process engine plugin is an extension to the process engine configuration.

A plugin must provide an implementation of the ProcessEnginePlugin interface.

Configure Process Engine Plugins

Process engine plugins can be configured

• in the BPM Platform Deployment Descriptors (bpm-platform.xml/processes.xml),
• in the JBoss Application Server 7/Wildfly 8 configuration file (standalone.xml/domain.xml),
• using Spring Beans XML,
• programatically.

The following is an example of how to configure a process engine plugin in a bpm-platform.xml file:

<?xml version="1.0" encoding="UTF-8"?>
<bpm-platform xmlns="http://www.camunda.org/schema/1.0/BpmPlatform"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.camunda.org/schema/1.0/BpmPlatform http://www.camunda.org/schema/1.0/BpmPlatform ">

  <job-executor>
    <job-acquisition name="default" />
  </job-executor>

  <process-engine name="default">
    <job-acquisition>default</job-acquisition>
    <configuration>org.camunda.bpm.engine.impl.cfg.JtaProcessEngineConfiguration</configuration>
    <datasource>jdbc/ProcessEngine</datasource>

    <plugins>
      <plugin>
        <class>org.camunda.bpm.engine.MyCustomProcessEnginePlugin</class>
        <properties>
          <property name="boost">10</property>
          <property name="maxPerformance">true</property>
          <property name="actors">akka</property>
        </properties>
      </plugin>
    </plugins>
  </process-engine>

</bpm-platform>

A process engine plugin class must be visible to the classloader which loads the process engine classes.

List of Built-In Process Engine Plugins

The following is a list of built-in process engine plugins:

• LDAP Identity Service Plugin
• Administrator Authorization Plugin
• Process Application Event Listener Plugin