Configuring Valves and Catalina Listeners

You can configure custom valves and Catalina listeners for web modules or virtual servers by defining properties. A valve class must implement the org.apache.catalina.Valve interface from Tomcat or previous GlassFish Server releases, or the org.glassfish.web.valve.GlassFishValve interface from the current GlassFish Server release. A listener class for a virtual server must implement the org.apache.catalina.ContainerListener or org.apache.catalina.LifecycleListener interface. A listener class for a web module must implement the org.apache.catalina.ContainerListener, org.apache.catalina.LifecycleListener, or org.apache.catalina.InstanceListener interface.

In the sun-web.xml file, valve and listener properties for a web module look like this:

<sun-web-app ...>
   ...
   <property name="valve_1" value="org.glassfish.extension.Valve"/>
   <property name="listener_1" value="org.glassfish.extension.MyLifecycleListener"/>
</sun-web-app>

You can define these same properties for a virtual server. For more information, see Virtual Server Properties.