groovy.jmx.builder.JmxListenerFactory.groovy Maven / Gradle / Ivy
/*
* Copyright 2008 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package groovy.jmx.builder
import javax.management.InstanceNotFoundException
import javax.management.NotificationFilterSupport
/**
* This factory class is used to create an listener() node for JmxBuilder. Listener nodes are used
* to create a generic event listener (that is automatically registered with the MBean) that can handle
* any event broadcasted on the MBeanServer's event bus.
*
* Syntax supported
*
*
* JmxBuilder.listener(event:"event type", from:"Object Name"|ObjectName(), call:{event->
* // event handling code here.
*})
*
*
* @author Vladimir Vivien
* @see groovy.jmx.builder.JmxEventListener
*/
class JmxListenerFactory extends AbstractFactory {
public Object newInstance(FactoryBuilderSupport builder, Object nodeName, Object nodeParam, Map nodeAttribs) {
if (nodeParam) {
throw new JmxBuilderException("Node '${nodeName}' only supports named attributes.")
}
JmxBuilder fsb = (JmxBuilder) builder
def server = fsb.getMBeanServer()
def map = JmxMetaMapBuilder.createListenerMap(nodeAttribs);
def broadcaster = map.get("from");
try {
def eventType = (String) map.get("event");
if (!server.isRegistered(broadcaster)) {
throw new JmxBuilderException("MBean '${broadcaster.toString()}' is not registered in server.")
}
if (eventType) {
NotificationFilterSupport filter = new NotificationFilterSupport();
filter.enableType(eventType);
server.addNotificationListener(broadcaster, JmxEventListener.getListener(), filter, map);
} else {
server.addNotificationListener(broadcaster, JmxEventListener.getListener(), null, map);
}
} catch (InstanceNotFoundException e) {
throw new JmxBuilderException(e);
}
map
}
public boolean onHandleNodeAttributes(FactoryBuilderSupport builder, Object node, Map nodeAttribs) {
return false;
}
public boolean isLeaf() {
return true;
}
public void onNodeCompleted(FactoryBuilderSupport builder, Object parentNode, Object thisNode) {
if (parentNode != null) {
parentNode.add(thisNode)
}
}
}