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8.3. A service assembly project
Overview
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Red Hat JBoss Fuse requires that all service units are bundled into a service assembly before they can be deployed to a container. The JBoss Fuse Maven plug-in collects all of the service units to be bundled and the metadata necessary for packaging. It will then build a service assembly containing the service units.
Seeding a project using a Maven artifact
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Red Hat JBoss Fuse provides a Maven artifact for seeding a service assembly project. You can seed a project with the smx-arch command. As shown in Example 8.8, the smx-arch command takes two arguments: the
groupId value and the artifactId values, which correspond to the project's group ID and artifact ID.
Example 8.8. Maven archetype command for service assemblies
smx-arch
sa
[
"-DgroupId=my.group.id"
] [
"-DartifactId=my.artifact.id"
]
Important
The double quotes(") are required when using the
-DgroupId argument and the -DartifactId argument.
Contents of a project
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A service assembly project typically only contains the POM file used by Maven.
Configuring the Maven plug-in
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T configure the Maven plug-in to package the results of the project build as a service assembly, change the value of the project's
packaging element to jbi-service-assembly, as shown in Example 8.9.
Example 8.9. Configuring the Maven plug-in to build a service assembly
<project ...>
<modelVersion>4.0.0</modelVersion>
...
<groupId>com.widgets.demo.cxf-wsdl-first</groupId>
<artifactId>cxf-wsdl-first-sa</artifactId>
<name>CXF WSDL Fisrt Demo :: Service Assembly</name>
<packaging>jbi-service-assembly</packaging>
...
</project>Specifying the target components
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The Maven plug-in must know what service units are being bundled into the service assembly. This is done by specifying the service units as dependencies, using the standard Maven
dependencies element. Add a dependency child element for each service unit. Example 8.10 shows the configuration for a service assembly that bundles two service units.
Example 8.10. Specifying the target components for a service unit
...
<dependencies>
<dependency>
<groupId>com.widgets.demo.cxf-wsdl-first</groupId>
<artifactId>cxfse-wsdl-first-su</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>com.widgets.demo.cxf-wsdl-first</groupId>
<artifactId>cxfbc-wsdl-first-su</artifactId>
<version>1.0</version>
</dependency>
</dependencies>
...Example
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Example 8.11 shows a POM file for a project that is building a service assembly.
Example 8.11. POM for a service assembly project
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent> 1
<groupId>com.widgets.demo</groupId>
<artifactId>cxf-wsdl-first</artifactId>
<version>1.0</version>
</parent>
<groupId>com.widgets.demo.cxf-wsdl-first</groupId>
<artifactId>cxf-wsdl-first-sa</artifactId>
<name>CXF WSDL Fisrt Demo :: Service Assemby</name>
<packaging>jbi-service-assembly</packaging> 2
<dependencies> 3
<dependency>
<groupId>com.widgets.demo.cxf-wsdl-first</groupId>
<artifactId>cxfse-wsdl-first-su</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>com.widgets.demo.cxf-wsdl-first</groupId>
<artifactId>cxfbc-wsdl-first-su</artifactId>
<version>1.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin> 4
<groupId>org.apache.servicemix.tooling</groupId>
<artifactId>jbi-maven-plugin</artifactId>
<extensions>true</extensions>
</plugin>
</plugins>
</build>
</project>
The POM in Example 8.11, “POM for a service assembly project” does the following:
- 1
- Specifies that it is a part of the top-level project shown in Example 8.2, “Top-level POM for a Red Hat JBoss Fuse JBI project”
- 2
- Specifies that this project builds a service assembly
- 3
- Specifies the service units being bundled by the service assembly
- 4
- Specifies to use the JBoss Fuse Maven plug-in
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