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CXF DOSGi in Apache Karaf

Since version 1.4.0 of CXF DOSGi there is a feature for Apache Karaf which makes installing DOSGi really easy. Using the descriptions below a working demo should be up in less than 10 minutes.

Download and unpack Apache Karaf

  • Download apache karafCopy etc/jre.properties.cxf to etc/jre.properties -> This is needed in karaf 2.2.x to adjust the system package exports so CXF can install correctly 4
  • Unpack and start it

...

Installation of CXF-DOSGi

Code Block
languagebash
feature:repo-add aries-rsa
features:chooseurl cxf-dosgi 1.49.0
featuresfeature:installrepo-add cxf-dosgi-discovery-distributed

Create config "etc/org.apache.cxf.dosgi.discovery.zookeeper.cfg" with the following content:

Code Block

zookeeper.port=2181
zookeeper.host=localhost

Installation of the zookeeper Server

Code Block

features 1.8.0
feature:install cxf-dosgi-zookeeper-server

Create config "etc/org.apache.cxf.dosgi.discovery.zookeeper.server.cfg" with the following content:

Code Block

zookeeper.host:127.0.0.1
clientPort:2181
zookeeper.port:2181
provider-cxf

Test installation with greeter demo

Code Block
languagebash

install -s mvn:org.apache.cxf.dosgi.samples/cxf-dosgi-ri-samples-greeter-interface/1.48.0
install -s mvn:org.apache.cxf.dosgi.samples/cxf-dosgi-ri-samples-greeter-impl/1.48.0

log:display endpoints should show the greeter service being exported:

Code Block
languagebash
Endpoints for framework 346376f5-ef56-4bda-b238-0a905ce99342
id                            | interfaces                                
2013-01-07 10:50:52,108 | INFO  | pool-13-thread-1 | TopologyManagerExport            | r.exporter.TopologyManagerExportframework        257 | 114 - cxf-dosgi-ri-topology-manager - 1.4.0 | TopologyManager: export sucessful Endpoints: [Endpoint Desctiption for ServiceReference [org.apache.cxf.dosgi.samples.greeter.GreeterService]
*** EndpointDescription: **** 
endpoint.framework.uuid | => 74455213-0926-4fa8-b3eb-0f9b4d15f119
endpoint.id  => comp name
----------------------------------------------------------------------------------------------------------------------------------------
http://localhost:9090/greeter
endpoint.package.version.org.apache.cxf.dosgi.samples.greeter  => 0.0.0
endpoint.service.id  => 252
objectClass  =>greeter | [org.apache.cxf.dosgi.samples.greeter.GreeterService]
org.apache.cxf.ws.address  =>  | 346376f5-ef56-4bda-b238-0a905ce99342 |

Now try to access the service using

http://localhost:9090/greeter

...

Access the service transparently from a second container

  • Unpack karaf in a second directory and also start it.
  • Do the installation steps from "Installation of CXF-DOSGi"
  • Install a client to a service that is published in the first container.
  • DOSGi will automatically install a proxy for you service that calls the published service remotely over CXF