Andrej Koelewijn

When you try to list your ActiveMQ brokers in ServiceMix you may run into the following jmx problem: The solution is simple, add the option –jmxlocal, and documented in Deploying into the OSGi Container:

Here’s a simple example to get started with Apache Camel and ActiveMq. The following Camel route will log all messages it receives in the EVENTS queue: The following junit test will start a message broker, start camel and then send one message to the queue: You need the following dependencies if you’re using Maven:

ServiceMix and Camel expose a lot of information through jmx mbeans. You can use jconsole to access this information. Start jconsole and connect to a running servicemix instance. Look for the entry with karaf in the name: In the mbeans tab you’ll find a node for Apache Camel. Here you’ll find all your routes, endpoints, [...]

In the past I used JAD to decompile java classes, but it hasn’t been updated to current java versions. So i tried the alternative suggested on the JAD wiki page: JD – Java Decompiler. It’s pretty nice: you can use the GUI to view the source code, navigate around with hyperlinks, search. You can also [...]

I’m running ServiceMix on a machine which doesn’t have internet access, so installing and upgrading features is a bit hard. You can, however, install features from an internal maven repository like Nexus. This post explains how you can configure which maven repositories should be used by ServiceMix. The OSGI implementation of ServiceMix (Apache Felix/Karaf) has [...]

Apache ServiceMix 4.2 includes Apache Camel 2.2.0. The following steps outline how you can add Apache Camel 2.3.0 in the same ServiceMix instance. This example uses the versions as released by Progress Fuse. Go to the ServiceMix console, either by starting servicemix, or by ssh-ing into ServiceMix. To install Camel 2.3 we need to add [...]

The following example illustrates how you can implement a composite service using Apache Camel. The service is exposed as a REST resource, and it uses two other resources to collect the data required. The composite service will enable a client to get info on a customer and it’s orders. To get this data the composite [...]

Nexus is a maven repository manager. You can use Nexus to host your own maven repository for artifact created in your company, or for caching external artifacts. Getting started with Nexus is pretty easy. Download the application. The package contains a webserver, so you don’t have to have a java container running. Simply unpack the [...]

If you are just starting out with JEE CDI (Weld), it’s easy to forget the required beans.xml file. If you don’t include it, you may run into problems like this: The beans.xml file (in META-INF/classes or WEB-INF/) can be empty or contain the following:

I ran into the following problem yesterday while building a rest service using resteasy: the code would compile ok, but the unit tests wouldn’t run. I got the following exception in the output of the unit tests: The problem is caused by the javeee-api dependency in my maven pom. As described here, the following dependency [...]