Groovy Camel extensions

In previous IPF versions, Camel DSL elements have been extended to accept Groovy closures as arguments. As of IPF 3, these extensions are provided directly by the camel-groovy DSL of Apache Camel.

To include camel-groovy, add the following dependency to the pom.xml file:

    <dependency>
        <groupId>org.apache.camel</groupId>
        <artifactId>camel-groovy</artifactId>
        <version>${camel-version}</version>
        <!-- Exclude Groovy bundle in favor of a explicit groovy dependency -->
        <!-- in order to avoid version conflicts -->
        <exclusions>
            <exclusion>
                <groupId>org.codehaus.groovy</groupId>
                <artifactId>groovy-all</artifactId>
            </exclusion>
            <exclusion>
                <groupId>com.sun.xml.bind</groupId>
                <artifactId>jaxb-impl</artifactId>
            </exclusion>
            <exclusion>
                <groupId>com.sun.xml.bind</groupId>
                <artifactId>jaxb-core</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

Now it is possible to use Groovy closures as argument to Camel processors, filters, transformers, etc.

Some examples:

    // Processor closure
    from('direct:input1')
        .process {exchange ->
            exchange.in.body = exchange.in.body.reverse()
        }
        .to('mock:output')

    // Filter closure
    from('direct:input2')
        .filter {exchange ->
            exchange.in.body == 'blah'
        }
        .to('mock:output')

    // Transform closure
    from('direct:input3')
        .transform {exchange ->
            exchange.in.body.reverse()
        }