PEtALS Distributed Service Bus Illustrated

Christophe Hamerling — Fri, 28 Nov 2008 09:57:24 +0000

Here are some slides extracted from a SOA4All presentation I gave last month in a technical meeting. It introduces the distributed aspects of PEtALS and also give some deployment and orchestration samples.

Creating a JBI Component with PEtALS CDK (Part 1)

Christophe Hamerling — Fri, 24 Oct 2008 12:05:09 +0000

Here is a series of articles about how to create a JBI Component with the PEtALS Component Development Kit (CDK).
The current one describes how to create the project structure with the PEtALS Maven archetypes, how to use it in Eclipse and how to package it as a JBI component.

Create the project structure

(I assume that Maven is installed and is in the path, if not please refer to the Apache Maven website).

mvn archetype:create
-DarchetypeGroupId=org.ow2.petals
-DarchetypeArtifactId=maven-archetype-petals-jbi-service-engine
-DarchetypeVersion=1.3.0-SNAPSHOT
-DgroupId=com.ebmws.petals
-DartifactId=petals-se-sample
-Dversion=1.0-SNAPSHOT

This will create the standard component structure.
You can check the JBI descriptor in petals-se-sample/src/main/jbi. Note that some fields such as the classpath are automatically filled during the packaging phase from the dependencies specified in your POM descriptor.

Create the Eclipse project

cd petals-se-sample
mvn eclipse:eclipse

In Eclipse, import the project and you will get

Do your business code

Now in the JBIListener class, you can implement the business logic which will be called when a JBI message is received in the activated JBI Endpoind (How to activate endpoint will come in the next article).

For example, just say hello to the world in the JBIListener like this :

Package the component

Simply package it with
mvn install

You will get a ZIP archive in the target directory which is the component you can deploy in PEtALS container

The source of this component are available here http://christophe.hamerling.free.fr/ebm/blog/tuto/cdk/petals-se-sample.zip