Chapter 17. Control Bus

The Bean language can be used to invoke a method on a bean to control the state of routes. The org.apache.camel.quarkus:camel-quarkus-bean extension must be added to the classpath. Maven users must add the following dependency to the POM:

<dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-bean</artifactId>
</dependency>

<dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-bean</artifactId>
</dependency>

In native mode, the bean class must be annotated with @RegisterForReflection.

The Simple language can be used to control the state of routes. The following example uses a ProducerTemplate to stop a route with the id foo:

template.sendBody(
    "controlbus:language:simple",
    "${camelContext.getRouteController().stopRoute('foo')}"
);

template.sendBody(
    "controlbus:language:simple",
    "${camelContext.getRouteController().stopRoute('foo')}"
);

To use the OGNL notation, the org.apache.camel.quarkus:camel-quarkus-bean extension must be added as a dependency.

In native mode, the classes used in the OGNL notation must be registered for reflection. In the above code snippet, the org.apache.camel.spi.RouteController class returned from camelContext.getRouteController() must be registered. As this is a third-party class, it cannot be annotated with @RegisterForReflection directly - instead you can annotate a different class and specifying the target classes to register. For example, the class defining the Camel routes could be annotated with @RegisterForReflection(targets = { org.apache.camel.spi.RouteController.class }).

Alternatively, add the following line to your src/main/resources/application.properties:

quarkus.camel.native.reflection.include-patterns = org.apache.camel.spi.RouteController

quarkus.camel.native.reflection.include-patterns = org.apache.camel.spi.RouteController