DOSGi Greeter is a sample application that demonstrates the DOSGi feature of Cellar.

Use Case
--------
A service bundle expose an OSGi service on the cluster using Cellar DOSGi.
On the other hand, a client bundle provides a shell command to call the service.
The call is remote using DOSGi.

Installation
-------------
To show the remote service call, your Cellar cluster should contain at least two nodes.

Install cellar and cellar-dosgi on the cluster:

karaf@root()> feature:repo-add cellar 4.0.0
karaf@root()> feature:install cellar
karaf@root()> feature:install cellar-dosgi

Install the api bundle on the cluster:

karaf@root()> cluster:bundle-install -s default mvn:org.apache.karaf.cellar.samples.dosgi.greeter/org.apache.karaf.cellar.samples.dosgi.greeter.api/4.0.0

Install the service bundle only on one node (node1):

karaf@root()> bundle:install -s mvn:org.apache.karaf.cellar.samples.dosgi.greeter/org.apache.karaf.cellar.samples.dosgi.greeter.service/4.0.0

On other nodes (node2), install the client bundle:

karaf@root()> bundle:install -s mvn:org.apache.karaf.cellar.samples.dosgi.greeter/org.apache.karaf.cellar.samples.dosgi.greeter.client/4.0.0

The client bundle provides a new shell command that we can use to call the OSGi service (remotely):

karaf@root()> dosgi-greeter:greet Hello 2
Hello.Hello from node 192.168.1.101:5702 count 0.
Hello.Hello from node 192.168.1.101:5702 count 1.
