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Chapter 7. FAB Tutorial

Abstract

This tutorial describes a complete example of how to generate, build, run, and deploy a Apache Camel application as a FAB.

7.1. Generating and Running an EIP FAB
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Overview
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This section explains how to generate, build, and run a complete Apache Camel example as a FAB, where the starting point code is generated with the help of a Maven archetype.

Prerequisites
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In order to generate a project using an Red Hat JBoss Fuse Maven archetype, you must have the following prerequisites:
  • Maven installation—Maven is a free, open source build tool from Apache. You can download the latest version from http://maven.apache.org/download.html (minimum is 2.0.9).
  • Internet connection—whilst performing a build, Maven dynamically searches external repositories and downloads the required artifacts on the fly. In order for this to work, your build machine must be connected to the Internet.
  • fusesource Maven repository is configured—in order to locate the archetypes, Maven's settings.xml file must be configured with the location of the fusesource Maven repository. For details of how to set this up, see the section called “Adding the Red Hat JBoss Fuse repository”.

Generating an EIP FAB
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The camel-archetype-blueprint archetype creates a sample Maven project that can be deployed as a FAB. To generate a Maven project with the coordinates, org.fusesource.example:camel-fab, enter the following command: 
mvn archetype:generate
-DarchetypeGroupId=org.apache.camel.archetypes
-DarchetypeArtifactId=camel-archetype-blueprint
-DarchetypeVersion=2.10.0.redhat-60024
-DgroupId=org.fusesource.example
-DartifactId=camel-fab
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The result of this command is a directory, ProjectDir/camel-fab, containing the files for the generated FAB project.

Running the EIP FAB
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To install and run the generated camel-fab project, perform the following steps:
  1. Build the project—open a command prompt and change directory to ProjectDir/camel-fab. Use Maven to build the demonstration by entering the following command: 
    mvn install
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    If this command runs successfully, the ProjectDir/camel-fab/target directory should contain the JAR file, camel-fab-1.0-SNAPSHOT.jar and the JAR will also be installed in the local Maven repository.
  2. Install and start the camel-fab JAR—at the Red Hat JBoss Fuse console, enter the following command: 
    JBossFuse:karaf@root> install fab:mvn:org.fusesource.example/camel-fab
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    If the FAB is successfully installed, its bundle ID is logged to the console window. Using this bundle ID, bundleID, start the FAB by entering the following console command: 
    JBossFuse:karaf@root> fab:start bundleID
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    After entering this command, you should soon see output like the following being logged to the console screen: 
    >>>> MyTransform set body:  Mon Sep 22 11:43:42 BST 2011
>>>> MyTransform set body:  Mon Sep 22 11:43:44 BST 2011
>>>> MyTransform set body:  Mon Sep 22 11:43:46 BST 2011
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  3. Stop the camel-fab bundle—using the FAB's bundle ID, bundleID, stop the camel-fab bundle, as follows: 
    JBossFuse:karaf@root> fab:stop bundleID
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