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Chapter 6. Building an OSGi Bundle
Abstract
This chapter describes how to build an OSGi bundle using Maven. For building bundles, the Maven bundle plug-in plays a key role, because it enables you to automate the generation of OSGi bundle headers (which would otherwise be a tedious task). Maven archetypes, which generate a complete sample project, can also provide a starting point for your bundle projects.
6.1. Generating a Bundle Project
Generating bundle projects with Maven archetypes
To help you get started quickly, you can invoke a Maven archetype to generate the initial outline of a Maven project (a Maven archetype is analogous to a project wizard). The following Maven archetypes can generate projects for building OSGi bundles:
Apache CXF karaf-soap-archetype archetype
The Apache CXF karaf-soap-archetype archetype creates a project for building a service from Java. To generate a Maven project with the coordinates, GroupId
:ArtifactId:Version, enter the following command:
mvn archetype:generate \ -DarchetypeGroupId=io.fabric8.archetypes \ -DarchetypeArtifactId=karaf-soap-archetype \ -DarchetypeVersion=1.2.0.redhat-621084 \ -DgroupId=GroupId \ -DartifactId=ArtifactId \ -Dversion=Version \ -Dfabric8-profile=ProfileName
Note
The backslash character,
\, indicates line continuation on Linux and UNIX operating systems. On Windows platforms, you must omit the backslash character and put all of the arguments on a single line.
Apache Camel archetype
The Apache Camel OSGi archetype creates a project for building a route that can be deployed into the OSGi container. To generate a Maven project with the coordinates, GroupId
:ArtifactId:Version, enter the following command:
mvn archetype:generate \ -DarchetypeGroupId=org.apache.camel.archetypes \ -DarchetypeArtifactId=camel-archetype-blueprint \ -DarchetypeVersion=2.15.1.redhat-621084 \ -DgroupId=GroupId \ -DartifactId=ArtifactId \ -Dversion=Version
Building the bundle
By default, the preceding archetypes create a project in a new directory, whose names is the same as the specified artifact ID, ArtifactId. To build the bundle defined by the new project, open a command prompt, go to the project directory (that is, the directory containing the
pom.xml file), and enter the following Maven command:
mvn install
The effect of this command is to compile all of the Java source files, to generate a bundle JAR under the ArtifactId
/target directory, and then to install the generated JAR in the local Maven repository.
