Grape

Grape Component

Grape component allows you to fetch, load and manage additional jars when CamelContext is running. In practice with Camel Grape component you can add new components, data formats and beans to your CamelContext without the restart of the router. Grape component supports only producer endpoints.

URI format

grape:defaultMavenCoordinates[?options]

For example the following snippet loads Camel FTP component:

from("direct:loadCamelFTP").
  to("grape:org.apache.camel/camel-ftp/2.15.2");

You can also specify the Maven coordinates by sending them to the endpoint as the exchange body:

from("direct:loadCamelFTP").
  setBody().constant("org.apache.camel/camel-ftp/2.15.2").
  to("grape:defaultMavenCoordinates");

Adding the Grape component to the project

Maven users will need to add the following dependency to their pom.xml for this component:

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-grape</artifactId>
    <version>x.y.z</version>
    <!-- use the same version as your Camel core version -->
</dependency>

Default payload type

By default Camel Grape component operates on the String payloads:

producerTemplate.sendBody("grape:defaultMavenCoordinates", "org.apache.camel/camel-ftp/2.15.2");

But of course Camel build-in type conversion API can perform the automatic data type transformations for you. In the example below Camel automatically converts binary payload into String:

producerTemplate.sendBody("grape:defaultMavenCoordinates", "org.apache.camel/camel-ftp/2.15.2".getBytes());

Headers

The following headers are recognized by the Grape component: