WSO2 ESB use of Custom Mediator - class

Question

I like to write a Custom Mediator for the WSO2 ESB.
I found some Tutorials for this, but I don't get it working in the WSO2 ESB. I think I maybe have an error in the path I need for the Class Mediator, but let me explain everything:
For writing this Mediator I use the WSO2 developer Studio for Eclipse Juno.
There I created a new ESB Mediator Project called "b64writer" with this content:
package org.wso2.carbon;
import org.apache.synapse.MessageContext;
import org.apache.synapse.mediators.AbstractMediator;
public class B64Mediator extends AbstractMediator {
public boolean mediate(MessageContext context) {
// TODO Implement your mediation logic here
String inhalt = context.getEnvelope().toString();
trace.trace("Message: " + inhalt);
return true;
}
}
In the next step I created a new Carbon Application Project, with the Mediator selected on "Dependencies". The config for this is:
Group ID: org.wso2.carbon.b64mediator
Artifact ID: b64mediator
Version: 1.0.0
I used the button on the right side to create an archive. This archive I copied to "C:\wso2esb\repository\carbonapps\0".
And now my question: How can I use this Mediator?
It should work like this:
<class name="org.wso2.carbon.B64Mediator" />
But it isn't. WSO2 ESB can't find the class. Where's my mistake?

Answer 1

Ok, I had the same issue as you, and I managed to add the mediator by using the WSO2 Developer Studio add-on for eclipse to make a mediation library. (Bring up the new wizard box, and select WSO2/Extensions/Project Types/Mediator Project)
Then create your mediator or put into the project, and export it as a jar file to the /repository/components/lib folder. You have to restart the ESB every time you update the jar or if you're running the ESB when you add the jar.
I hope this helps.

Answer 2

Place the archive inside repository/components/dropins or repository/components/lib (if you don't build it as an osgi bundle) directory.

Answer 3

you should deploy class mediators as java Library artifact and refer them from class Mediators. That is, deply the jar you craeted from dev studio and keep taht in repository/components/lib folder and restart the server.
Then refer like;
<class name="org.wso2.carbon.B64Mediator" />
from your sequence

Answer 4

I don't know if you have solved your problem. I had the same issue but I could solved it.
I created my mediator using the WSO2 Developer Studio "Mediator Project" in Eclipse Kepler. Next I exported to Java/JAR file right clicking in my project and selecting "export generated class files and resources" in the properties.
The JAR file you have to place into repository/components/lib folder and restart your ESB