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Chapter 4. Authorization Modules
4.1. Custom Authorization Modules
In situations where the JBoss Data Virtualization built-in role mechanism is not sufficient, a custom
org.teiid.PolicyDecider can be installed via a JBoss module. This is a two-stage process: first you must create a jar that contains your custom class, then you must expose the jar as a JBoss module so it can be seen by all of your classes.
- Implement the org.teiid.PolicyDecider interface and build a custom java class. If you are using maven as your build process, you can use the following dependencies:
<dependencies> <dependency> <groupId>org.jboss.teiid</groupId> <artifactId>teiid-api</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>org.jboss.teiid</groupId> <artifactId>teiid-common-core</artifactId> <scope>provided</scope> </dependency> </dependencies> - The PolicyDecider interface is loaded by JBoss Data Virtualization using Java's standard service loader mechanism. For this to work, add the
META-INF/services/org.teiid.PolicyDeciderfile with the full name of your PolicyDecider implementation class as its contents. Here is an example:org.jboss.teiid.auth.MyCustomPolicyDecider
- Package all of these files into a JAR archive.
- Create a directory called
[JDV_HOME]/modules/com/mycompany/main/. - Copy your jar file into the newly-created directory.
- Create a module.xml file and also put it in the
[JDV_HOME]/modules/com/mycompany/main/directory.Here is an example that shows dependencies specific to JBoss Data Virtualization:<?xml version="1.0" encoding="UTF-8"?> <module xmlns="urn:jboss:module:1.0" name="com.mycompany"> <resources> <resource-root path="my_custom_policy.jar" /> <!--add any other dependent jars here, if they are not defined as modules --> </resources> <dependencies> <module name="org.jboss.teiid.common-core"/> <module name="org.jboss.teiid.api"/> <module name="javax.api"/> </dependencies> </module>Note
If your PolicyDecider has any third-party dependencies, add them as dependencies to themodule.xmlfile. Ensure you list all the files required. If dependencies are missing you will be informed when you start the software. - After the module has been added, edit the server configuration file (
standalone.xmlor its equivalent) to use your module name. The module must be added to the "teiid" subsystem:<policy-decider-module>MODULE-NAME</policy-decider-module>
- Restart the system.
