| DOSGi Greeter is a sample application that demonstrates the DOSGi feature of Cellar. |
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| 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. |
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| Installation |
| ------------- |
| To show the remote service call, your Cellar cluster should contain at least two nodes. |
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| Install cellar and cellar-dosgi on the cluster: |
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| karaf@root()> feature:repo-add cellar 4.0.0 |
| karaf@root()> feature:install cellar |
| karaf@root()> feature:install cellar-dosgi |
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| Install the api bundle on the cluster: |
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| 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 |
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| Install the service bundle only on one node (node1): |
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| karaf@root()> bundle:install -s mvn:org.apache.karaf.cellar.samples.dosgi.greeter/org.apache.karaf.cellar.samples.dosgi.greeter.service/4.0.0 |
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| On other nodes (node2), install the client bundle: |
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| karaf@root()> bundle:install -s mvn:org.apache.karaf.cellar.samples.dosgi.greeter/org.apache.karaf.cellar.samples.dosgi.greeter.client/4.0.0 |
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| The client bundle provides a new shell command that we can use to call the OSGi service (remotely): |
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| 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. |
