JBoss Modular Application Server Build

This module contains a number of profiles each dedicated to a custom AS7 build.

Defining the Subsystems

Subsystems are defined by a simple comma seperated list of identifiers Each identifier can be qualified with a supplement identifier.

<standalone.subsystems>logging:osgi,osgi:eager,configadmin,deployment-scanner</standalone.subsystems>

Subsystem Definition Output

Given the above input the Ant task will generate a subsystem definition file

standalone-subsystems.xml

<config xmlns="urn:subsystems-config:1.0">
    <subsystems>
        <subsystem supplement="osgi">configuration/subsystems/logging.xml</subsystem>
        <subsystem supplement="minimal">configuration/subsystems/osgi.xml</subsystem>
        <subsystem>configuration/subsystems/configadmin.xml</subsystem>
        <subsystem>configuration/subsystems/deployment-scanner.xml</subsystem>
    </subsystems>
</config>

which is then passed to the Ant macros that are used for the ordinary AS7 build.

Reducing the set of System Modules

Given the above subsystem definition we obtain the set of extension modules and scan the transitive set of their dependencies from the respective module.xml definitions. This is a recursive process which produces a pattern file that can then be used to copy the modules hirarchy.

standalone-module-dependencies.txt

asm/asm/main/**
ch/qos/cal10n/main/**
com/github/relaxng/main/**
com/google/guava/main/**
com/sun/codemodel/main/**
com/sun/istack/main/**
com/sun/xml/bind/main/**
com/sun/xml/messaging/saaj/main/**
com/sun/xml/txw2/main/**
com/sun/xsom/main/**
javax/activation/api/main/**
javax/annotation/api/main/**
javax/api/main/**
....

For debugging purposes this transitive set is also available in xml

standalone-module-dependencies.xml

...
<module name="org.jboss.logging:main">
    <module name="org.jboss.logmanager:main">
        <module name="org.jboss.modules:main"/>
        <module name="org.jboss.as.logging:main" defined="true"/>
    </module>
</module>
...

Resulting Server Build

The resulting server build only contains the generated configurations and system modules that are needed to run the configured subsystems. Adding additional subsystems later will likely not work because of missing module dependencies.
For the above case this reduces the download size from 128MB to 80MB.

Domain Support

Domain support is optional and can be enabled/disabled by setting the 'domain.enabled' propperty accordingly. Enabling domain configs will include an additional large set of required module dependencies