|
Groovy example source code file (JmxBeanFactory.groovy)
The Groovy JmxBeanFactory.groovy source code/*
* Copyright 2008-2010 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.MBeanServer
/**
* This factory returns the bean() node. This node is used to declaratively expose a POGO/POJO
* to be exported to the MBeanServer for management. You can use the builder node
* to declare the descriptor or embed the descriptor directly in the object being
* exposed using static variable descriptor (or jmx). You should note that
* embedded descriptor takes precedence over declared builder descriptor.
*
* <p>The following shows all of the different syntax forms supported by the node.
*
* <pre>
*
* @author Vladimir Vivien
*/
class JmxBeanFactory extends AbstractFactory {
public Object newInstance(FactoryBuilderSupport builder, Object nodeName, Object nodeParam, Map nodeAttributes) {
JmxBuilder fsb = (JmxBuilder) builder
MBeanServer server = (MBeanServer) fsb.getMBeanServer()
def metaMap
def target
// embedded descriptor or implied descriptor
if (nodeParam) {
target = nodeParam
metaMap = initMetaMap(target)
metaMap = JmxMetaMapBuilder.buildObjectMapFrom(target)
}
// descriptor provided
else if (nodeAttributes) {
target = nodeAttributes.target
metaMap = initMetaMap(target)
metaMap = JmxMetaMapBuilder.buildObjectMapFrom(target, nodeAttributes)
}
// make sure a server instance is there
metaMap.server = metaMap.server ?: server
//if target implements MBean, MxBean,or Dynamic bean, skip metaMap step
metaMap.isMBean = JmxBuilderTools.isClassMBean(target.getClass())
return metaMap
}
public boolean onHandleNodeAttributes(FactoryBuilderSupport builder, Object node, Map nodeAttribs) {
return false;
}
public void onNodeCompleted(FactoryBuilderSupport builder, Object parentNode, Object thisNode) {
JmxBuilder fsb = (JmxBuilder) builder
MBeanServer server = (MBeanServer) fsb.getMBeanServer()
def metaMap = thisNode
def regPolicy = fsb.parentFactory?.registrationPolicy ?: "replace"
def registeredBean = JmxBuilderTools.registerMBeanFromMap(regPolicy, metaMap)
// if replace, remove from parent node and re add.
if (parentNode != null && registeredBean && regPolicy == "replace") {
for (Iterator i = parentNode.iterator(); i.hasNext();) {
def exportedBean = i.next()
if (exportedBean.name().equals(metaMap.jmxName)) {
i.remove()
}
}
}
// only add if bean was successfully registered.
if (parentNode != null && registeredBean) {
parentNode.add(registeredBean)
}
}
public boolean isLeaf() {
return false
}
private def initMetaMap(target) {
if (!target) {
throw new JmxBuilderException("You must specify a target object to " +
" export as MBean i.e. JmxBuilder.bean(targetInstance), " +
" JmxBuilder.bean([target:instance]), JmxBuilder.beans([instanceList]).")
}
def metaMap = [:]
metaMap.target = target
metaMap.name = target.class.canonicalName
metaMap
}
}
|
... this post is sponsored by my books ... | |
#1 New Release! |
FP Best Seller |
Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.
A percentage of advertising revenue from
pages under the /java/jwarehouse
URI on this website is
paid back to open source projects.