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Chapter 11. Configuring Red Hat JBoss Fuse

Abstract

Red Hat JBoss Fuse uses the OSGi Configuration Admin service to manage the configuration of OSGi services. How you feed information to the configuration service depends on how the container is deployed.

11.1. Introducing Red Hat JBoss Fuse Configuration

OSGi configuration

The OSGi Configuration Admin service specifies the configuration information for deployed services and ensures that the services receive that data when they are active.
A configuration is a list of name-value pairs read from a .cfg file in the InstallDir/etc directory. The file is interpreted using the Java properties file format. The filename is mapped to the persistent identifier (PID) of the service that is to be configured. In OSGi, a PID is used to identify a service across restarts of the container.

Configuration files

You can configure the Red Hat JBoss Fuse runtime using the following files:

Table 11.1. Red Hat JBoss Fuse Configuration Files

FilenameDescription
activemq.xmlConfigures the default Apache ActiveMQ broker in a Fabric (used in combination with the org.fusesource.mq.fabric.server-default.cfg file).
config.propertiesThe main configuration file for the container See Section 11.2, “Setting OSGi Framework and Initial Container Properties” for details.
keys.propertiesLists the users who can access the JBoss Fuse runtime using the SSH key-based protocol. The file's contents take the format username=publicKey,role
org.apache.aries.transaction.cfgConfigures the transaction feature
org.apache.felix.fileinstall-deploy.cfgConfigures a watched directory and polling interval for hot deployment.
org.apache.karaf.features.cfgConfigures a list of feature repositories to be registered and a list of features to be installed when JBoss Fuse starts up for the first time.
org.apache.karaf.features.obr.cfgConfigures the default values for the features OSGi Bundle Resolver (OBR).
org.apache.karaf.jaas.cfgConfigures options for the Karaf JAAS login module. Mainly used for configuring encrypted passwords (disabled by default).
org.apache.karaf.log.cfgConfigures the output of the log console commands. See Section 16.1, “Logging Configuration”.
org.apache.karaf.management.cfg
Configures the JMX system. See Chapter 13, Configuring JMX for details.
org.apache.karaf.shell.cfg
Configures the properties of remote consoles. For more information see Section 8.1, “Configuring a Container for Remote Access”.
org.apache.servicemix.jbi.cfg
Configures the shutdown timeout for the JBI container.
org.apache.servicemix.nmr.cfg
Configures the default thread pool settings for JBI. See .
org.apache.servicemix.components.Name.cfg
Configures the thread pool settings specifically for the Name JBI component. See .
org.fusesource.bai.agent.cfgConfigures the Fuse BAI (Business Activity Insight) feature, if it is installed.
io.fabric8.fab.osgi.url.cfgConfigures the Maven repositories used by the Fuse Application Bundle (FAB) runtime when downloading artifacts. If the properties in this file are not set, FAB defaults to the values in org.ops4j.pax.url.mvn.cfg.
io.fabric8.maven.cfgConfigures the Maven repositories used by the Fabric Maven Proxy when downloading artifacts, (The Fabric Maven Proxy is used for provisioning new containers on a remote host.)
org.fusesource.mq.fabric.server-default.cfgConfigures the default Apache ActiveMQ broker in a Fabric (used in combination with the activemq.xml file).
org.jclouds.shell.cfgConfigures options for formatting the output of jclouds:* console commands.
org.ops4j.pax.logging.cfg
Configures the logging system. For more, see Section 16.1, “Logging Configuration”.
org.ops4j.pax.url.mvn.cfgConfigures additional URL resolvers.
org.ops4j.pax.web.cfgConfigures the default Jetty container (Web server). See Securing the Web Console.
startup.properties
Specifies which bundles are started in the container and their start-levels. Entries take the format bundle=start-level.
system.properties
Specifies Java system properties. Any properties set in this file are available at runtime using System.getProperties(). See Setting System and Config Properties for more.
users.propertiesLists the users who can access the JBoss Fuse runtime either remotely or via the web console. The file's contents take the format username=password,role

Configuration file naming convention

The file naming convention for configuration files depends on whether the configuration is intended for an OSGi Managed Service or for an OSGi Managed Service factory.
The configuration file for an OSGi Managed Service obeys the following naming convention: 
<PID>.cfg
Where <PID> is the persistent ID of the OSGi Managed Service (as defined in the OSGi Configuration Admin specification). A persistent ID is normally dot-delimited—for example, org.ops4j.pax.web.
The configuration file for an OSGi Managed Service Factory obeys the following naming convention: 
<PID>-<InstanceID>.cfg
Where <PID> is the persistent ID of the OSGi Managed Service Factory. In the case of a managed service factory's <PID>, you can append a hyphen followed by an arbitrary instance ID, <InstanceID>. The managed service factory then creates a unique service instance for each <InstanceID> that it finds.

JBI component configuration

In addition to the container's configuration files, the InstallDir/etc folder may contain a number of configuration files for the JBI components that ship with Red Hat JBoss Fuse.
The component configuration files are named using the scheme org.apache.servicemix.components.ComponentName.cfg. For example, you would configure the JMS component using a file called org.apache.servicemix.components.jms.cfg.
The contents of a component's configuration file is largely component specific. However, each component configuration file contains properties for configuring the thread pool used by the component to process message exchanges. See Chapter 19, Configuring JBI Component Thread Pools for details.