camel - how to have multiple contexts with java config

Question

I'm trying to group several camel routes in different camel contexts to avoid component name clashing. I know how to configure several RouteBuilder classes in the same Context extending From CamelConfiguration this way

   @Configuration
   public class CamelConfig extends CamelConfiguration {

   @Override
   public List<RouteBuilder> routes() {
       // here I create the RouteBuilder List and the return it
   }

But how I can have some routes in one camel context and other routes in other camel context using Java Configuration?

Answer 1

You can add many Camel Routes defined in external XML files in just one Camel Context as the example bellow:

You can create your routes in a new xml file (ie. routes1-config.xml):

<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="
   http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
   http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd
">

  <!-- this is an included XML file where we only the the routeContext -->
  <routeContext id="routes1" xmlns="http://camel.apache.org/schema/spring">
    <!-- we can have a route -->
    <route id="cool">
        <from uri="direct:start"/>
        <to uri="mock:result"/>
    </route>
    <!-- and another route, you can have as many your like -->
    <route id="bar">
        <from uri="direct:bar"/>
        <to uri="mock:bar"/>
    </route>
  </routeContext>

</beans>

and then import and reference it on the context inside the main camel xml file, like this:

<!-- import the routes from another XML file -->
<import resource="routes1-config.xml"/>

<camelContext xmlns="http://camel.apache.org/schema/spring">

  <!-- refer to a given route to be used -->
  <routeContextRef ref="routes1"/>

  <!-- we can of course still use routes inside camelContext -->
  <route id="inside">
    <from uri="direct:inside"/>
    <to uri="mock:inside"/>
  </route>
</camelContext>

For more details please check the official reference documentation from Apache Camel http://camel.apache.org/how-do-i-import-routes-from-other-xml-files.html