Archetypes

Karaf provides archetypes to easily create commands, manage features or repository and create a kar archive. This section describes each of them and explain How to use it.

Create a command (karaf-command-archetype)

This archetype creates a Maven skeleton project that you will use to develop new Karaf commands.

Command line

Using the command line, we can create our project:

mvn archetype:generate \
  -DarchetypeGroupId=org.apache.karaf.archetypes \
  -DarchetypeArtifactId=karaf-command-archetype \
  -DarchetypeVersion=4.0.0 \
  -DgroupId=com.mycompany \
  -DartifactId=com.mycompany.command \
  -Dversion=1.0-SNAPSHOT \
  -Dpackage=com.mycompany.package

Additional parameters

During the maven creation process, additional questions will be asked on the console :

Define value for property 'command': the name of the command (list, add-item, …)
Define value for property 'description': provide a description of the command that you want to create. This description will be displayed in the Karaf console when the parameter --help is used
Define value for property 'scope': this value represents the family name to which the command belongs (features, osgi, admin, jaas, …)

Result of Maven command execution

[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> maven-archetype-plugin:2.1:generate (default-cli) @ standalone-pom >>>
[INFO]
[INFO] <<< maven-archetype-plugin:2.1:generate (default-cli) @ standalone-pom <<<
[INFO]
[INFO] --- maven-archetype-plugin:2.1:generate (default-cli) @ standalone-pom ---
[INFO] Generating project in Interactive mode
[INFO] Archetype repository missing. Using the one from [org.apache.karaf.archetypes:karaf-command-archetype:4.0.0] found in catalog local
[INFO] Using property: groupId = com.mycompany
[INFO] Using property: artifactId = com.mycompany.command
[INFO] Using property: version = 1.0-SNAPSHOT
[INFO] Using property: package = com.mycompany.package
Define value for property 'command': : list
Define value for property 'description': : List sample command
Define value for property 'scope': : my
Confirm properties configuration:
groupId: com.mycompany
artifactId: com.mycompany.command
version: 1.0-SNAPSHOT
package: com.mycompany.package
command: list
description: List sample command
scope: my
 Y: :
[INFO] ----------------------------------------------------------------------------
[INFO] Using following parameters for creating project from Archetype: karaf-command-archetype:4.0.0
[INFO] ----------------------------------------------------------------------------
[INFO] Parameter: groupId, Value: com.mycompany
[INFO] Parameter: artifactId, Value: com.mycompany.command
[INFO] Parameter: version, Value: 1.0-SNAPSHOT
[INFO] Parameter: package, Value: com.mycompany.package
[INFO] Parameter: packageInPathFormat, Value: com/mycompany/package
[INFO] Parameter: package, Value: com.mycompany.package
[INFO] Parameter: version, Value: 1.0-SNAPSHOT
[INFO] Parameter: groupId, Value: com.mycompany
[INFO] Parameter: scope, Value: my
[INFO] Parameter: description, Value: List sample command
[INFO] Parameter: command, Value: list
[INFO] Parameter: artifactId, Value: com.mycompany.command
[WARNING] Don't override file /com.mycompany.command/pom.xml
[INFO] project created from Archetype in dir: /com.mycompany.command
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 27.204s
[INFO] Finished at: Mon Dec 19 09:38:49 CET 2011
[INFO] Final Memory: 7M/111M
[INFO] ------------------------------------------------------------------------

Next, you can import your project in Eclipse/IntelliJ and developp the Karaf command.

Create an OSGi bundle (karaf-bundle-archetype)

This archetype creates a Maven skeleton to create an OSGi bundle, including a bundle Activator (a special callback class for bundle start/stop).

Command line

Using the command line, we can create our project:

mvn archetype:generate \
    -DarchetypeGroupId=org.apache.karaf.archetypes \
    -DarchetypeArtifactId=karaf-bundle-archetype \
    -DarchetypeVersion=4.0.0 \
    -DgroupId=com.mycompany \
    -DartifactId=com.mycompany.bundle \
    -Dversion=1.0-SNAPSHOT \
    -Dpackage=com.mycompany.package

Result of Maven command execution

[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> maven-archetype-plugin:2.1:generate (default-cli) @ standalone-pom >>>
[INFO]
[INFO] <<< maven-archetype-plugin:2.1:generate (default-cli) @ standalone-pom <<<
[INFO]
[INFO] --- maven-archetype-plugin:2.1:generate (default-cli) @ standalone-pom ---
[INFO] Generating project in Interactive mode
[INFO] Archetype repository missing. Using the one from [org.apache.karaf.archetypes:karaf-bundle-archetype:4.0.0] found in catalog local
[INFO] Using property: groupId = com.mycompany
[INFO] Using property: artifactId = com.mycompany.bundle
[INFO] Using property: version = 1.0-SNAPSHOT
[INFO] Using property: package = com.mycompany.package
Confirm properties configuration:
groupId: com.mycompany
artifactId: com.mycompany.bundle
version: 1.0-SNAPSHOT
package: com.mycompany.package
 Y: :
[INFO] ----------------------------------------------------------------------------
[INFO] Using following parameters for creating project from Archetype: karaf-bundle-archetype:4.0.0
[INFO] ----------------------------------------------------------------------------
[INFO] Parameter: groupId, Value: com.mycompany
[INFO] Parameter: artifactId, Value: com.mycompany.bundle
[INFO] Parameter: version, Value: 1.0-SNAPSHOT
[INFO] Parameter: package, Value: com.mycompany.package
[INFO] Parameter: packageInPathFormat, Value: com/mycompany/package
[INFO] Parameter: package, Value: com.mycompany.package
[INFO] Parameter: version, Value: 1.0-SNAPSHOT
[INFO] Parameter: groupId, Value: com.mycompany
[INFO] Parameter: artifactId, Value: com.mycompany.bundle
[INFO] project created from Archetype in dir: /com.mycompany.bundle
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 7.895s
[INFO] Finished at: Mon Dec 19 11:41:44 CET 2011
[INFO] Final Memory: 8M/111M
[INFO] ------------------------------------------------------------------------

Create an OSGi blueprint bundle (karaf-blueprint-archetype)

This archetype creates a Maven skeleton project to create an OSGi blueprint bundle, including a sample bean exposed as an OSGi service in the blueprint XML descriptor.

Command line

Using the command line, we can create our project:

mvn archetype:generate \
    -DarchetypeGroupId=org.apache.karaf.archetypes \
    -DarchetypeArtifactId=karaf-blueprint-archetype \
    -DarchetypeVersion=4.0.0 \
    -DgroupId=com.mycompany \
    -DartifactId=com.mycompany.blueprint \
    -Dversion=1.0-SNAPSHOT \
    -Dpackage=com.mycompany.blueprint

Result of Maven command execution

[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> maven-archetype-plugin:2.1:generate (default-cli) @ standalone-pom >>>
[INFO]
[INFO] <<< maven-archetype-plugin:2.1:generate (default-cli) @ standalone-pom <<<
[INFO]
[INFO] --- maven-archetype-plugin:2.1:generate (default-cli) @ standalone-pom ---
[INFO] Generating project in Interactive mode
[INFO] Archetype repository missing. Using the one from [org.apache.karaf.archetypes:karaf-blueprint-archetype:4.0.0] found in catalog local
[INFO] Using property: groupId = com.mycompany
[INFO] Using property: artifactId = com.mycompany.blueprint
[INFO] Using property: version = 1.0-SNAPSHOT
[INFO] Using property: package = com.mycompany.package
Confirm properties configuration:
groupId: com.mycompany
artifactId: com.mycompany.blueprint
version: 1.0-SNAPSHOT
package: com.mycompany.package
 Y: :
[INFO] ----------------------------------------------------------------------------
[INFO] Using following parameters for creating project from Archetype: karaf-blueprint-archetype:4.0.0
[INFO] ----------------------------------------------------------------------------
[INFO] Parameter: groupId, Value: com.mycompany
[INFO] Parameter: artifactId, Value: com.mycompany.blueprint
[INFO] Parameter: version, Value: 1.0-SNAPSHOT
[INFO] Parameter: package, Value: com.mycompany.package
[INFO] Parameter: packageInPathFormat, Value: com/mycompany/package
[INFO] Parameter: package, Value: com.mycompany.package
[INFO] Parameter: version, Value: 1.0-SNAPSHOT
[INFO] Parameter: groupId, Value: com.mycompany
[INFO] Parameter: artifactId, Value: com.mycompany.blueprint
[INFO] project created from Archetype in dir: /com.mycompany.blueprint
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1:06:36.741s
[INFO] Finished at: Mon Dec 19 13:04:43 CET 2011
[INFO] Final Memory: 7M/111M
[INFO] ------------------------------------------------------------------------

Create a features XML (karaf-feature-archetype)

This archetype creates a Maven skeleton project which create a features XML file, using the dependencies that you define in the POM.

Command line

Using the command line, we can create our project:

mvn archetype:generate \
    -DarchetypeGroupId=org.apache.karaf.archetypes \
    -DarchetypeArtifactId=karaf-feature-archetype \
    -DarchetypeVersion=4.0.0 \
    -DgroupId=my.company \
    -DartifactId=my.company.feature \
    -Dversion=1.0-SNAPSHOT \
    -Dpackage=my.company.package

Result of maven command execution

[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> maven-archetype-plugin:2.1:generate (default-cli) @ standalone-pom >>>
[INFO]
[INFO] <<< maven-archetype-plugin:2.1:generate (default-cli) @ standalone-pom <<<
[INFO]
[INFO] --- maven-archetype-plugin:2.1:generate (default-cli) @ standalone-pom ---
[INFO] Generating project in Interactive mode
[INFO] Archetype repository missing. Using the one from [org.apache.karaf.archetypes:karaf-feature-archetype:4.0.0] found in catalog local
[INFO] Using property: groupId = com.mycompany
[INFO] Using property: artifactId = com.mycompany.feature
[INFO] Using property: version = 1.0-SNAPSHOT
[INFO] Using property: package = com.mycompany.package
Confirm properties configuration:
groupId: com.mycompany
artifactId: com.mycompany.feature
version: 1.0-SNAPSHOT
package: com.mycompany.package
 Y: :
[INFO] ----------------------------------------------------------------------------
[INFO] Using following parameters for creating project from Archetype: karaf-feature-archetype:4.0.0
[INFO] ----------------------------------------------------------------------------
[INFO] Parameter: groupId, Value: com.mycompany
[INFO] Parameter: artifactId, Value: com.mycompany.feature
[INFO] Parameter: version, Value: 1.0-SNAPSHOT
[INFO] Parameter: package, Value: com.mycompany.package
[INFO] Parameter: packageInPathFormat, Value: com/mycompany/package
[INFO] Parameter: package, Value: com.mycompany.package
[INFO] Parameter: version, Value: 1.0-SNAPSHOT
[INFO] Parameter: groupId, Value: com.mycompany
[INFO] Parameter: artifactId, Value: com.mycompany.feature
[INFO] project created from Archetype in dir: /com.mycompany.feature
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 7.262s
[INFO] Finished at: Mon Dec 19 13:20:00 CET 2011
[INFO] Final Memory: 7M/111M
[INFO] ------------------------------------------------------------------------

Create a KAR file (karaf-kar-archetype)

This archetype creates a Maven skeleton project including a features XML sample, used to generate a KAR file.

Command line

Using the command line, we can create our project:

mvn archetype:generate \
    -DarchetypeGroupId=org.apache.karaf.archetypes \
    -DarchetypeArtifactId=karaf-kar-archetype \
    -DarchetypeVersion=4.0.0 \
    -DgroupId=com.mycompany \
    -DartifactId=com.mycompany.kar \
    -Dversion=1.0-SNAPSHOT \
    -Dpackage=com.mycompany.package

Result of maven command execution

[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> maven-archetype-plugin:2.1:generate (default-cli) @ standalone-pom >>>
[INFO]
[INFO] <<< maven-archetype-plugin:2.1:generate (default-cli) @ standalone-pom <<<
[INFO]
[INFO] --- maven-archetype-plugin:2.1:generate (default-cli) @ standalone-pom ---
[INFO] Generating project in Interactive mode
[INFO] Archetype repository missing. Using the one from [org.apache.karaf.archetypes:karaf-kar-archetype:4.0.0] found in catalog local
[INFO] Using property: groupId = com.mycompany
[INFO] Using property: artifactId = com.mycompany.kar
[INFO] Using property: version = 1.0-SNAPSHOT
[INFO] Using property: package = com.mycompany.package
Confirm properties configuration:
groupId: com.mycompany
artifactId: com.mycompany.kar
version: 1.0-SNAPSHOT
package: com.mycompany.package
 Y: :
[INFO] ----------------------------------------------------------------------------
[INFO] Using following parameters for creating project from Archetype: karaf-kar-archetype:4.0.0
[INFO] ----------------------------------------------------------------------------
[INFO] Parameter: groupId, Value: com.mycompany
[INFO] Parameter: artifactId, Value: com.mycompany.kar
[INFO] Parameter: version, Value: 1.0-SNAPSHOT
[INFO] Parameter: package, Value: com.mycompany.package
[INFO] Parameter: packageInPathFormat, Value: com/mycompany/package
[INFO] Parameter: package, Value: com.mycompany.package
[INFO] Parameter: version, Value: 1.0-SNAPSHOT
[INFO] Parameter: groupId, Value: com.mycompany
[INFO] Parameter: artifactId, Value: com.mycompany.kar
[INFO] project created from Archetype in dir: /com.mycompany.kar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 7.465s
[INFO] Finished at: Mon Dec 19 13:30:15 CET 2011
[INFO] Final Memory: 8M/157M
[INFO] ------------------------------------------------------------------------