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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.cxf.management.jmx;
import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.PostConstruct;
import javax.annotation.Resource;
import javax.management.InstanceAlreadyExistsException;
import javax.management.JMException;
import javax.management.MBeanServer;
import javax.management.MBeanServerFactory;
import javax.management.NotCompliantMBeanException;
import javax.management.ObjectInstance;
import javax.management.ObjectName;
import javax.management.modelmbean.InvalidTargetObjectTypeException;
import javax.management.modelmbean.ModelMBeanInfo;
import javax.management.modelmbean.RequiredModelMBean;
import org.apache.cxf.Bus;
import org.apache.cxf.bus.ManagedBus;
import org.apache.cxf.buslifecycle.BusLifeCycleListener;
import org.apache.cxf.buslifecycle.BusLifeCycleManager;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.management.InstrumentationManager;
import org.apache.cxf.management.JMXConnectorPolicyType;
import org.apache.cxf.management.ManagedComponent;
import org.apache.cxf.management.ManagementConstants;
import org.apache.cxf.management.jmx.export.runtime.ModelMBeanAssembler;
/**
* The manager class for the JMXManagedComponent which hosts the JMXManagedComponents.
*/
public class InstrumentationManagerImpl extends JMXConnectorPolicyType
implements InstrumentationManager, BusLifeCycleListener {
private static final Logger LOG = LogUtils.getL7dLogger(InstrumentationManagerImpl.class);
private Bus bus;
private MBServerConnectorFactory mcf;
private MBeanServer mbs;
private Set busMBeans = new HashSet();
private ModelMBeanAssembler assembler;
private boolean connectFailed;
private String mbeanServerName = ManagementConstants.DEFAULT_DOMAIN_NAME;
private boolean usePlatformMBeanServer;
public InstrumentationManagerImpl() {
super();
assembler = new ModelMBeanAssembler();
}
public Bus getBus() {
return bus;
}
@Resource(name = "cxf")
public void setBus(Bus bus) {
this.bus = bus;
}
public void setServerName(String s) {
mbeanServerName = s;
}
public void setUsePlatformMBeanServer(Boolean flag) {
usePlatformMBeanServer = flag;
}
@PostConstruct
public void register() {
if (null != bus) {
bus.setExtension(this, InstrumentationManager.class);
BusLifeCycleManager blcm = bus.getExtension(BusLifeCycleManager.class);
if (null != blcm) {
blcm.registerLifeCycleListener(this);
}
}
}
@PostConstruct
public void init() {
if (isEnabled()) {
// return platform mbean server if the option is specified.
if (usePlatformMBeanServer) {
mbs = ManagementFactory.getPlatformMBeanServer();
} else {
List servers = MBeanServerFactory.findMBeanServer(mbeanServerName);
if (servers.size() <= 1) {
mbs = MBeanServerFactory.createMBeanServer(mbeanServerName);
} else {
mbs = (MBeanServer)servers.get(0);
}
}
mcf = MBServerConnectorFactory.getInstance();
mcf.setMBeanServer(mbs);
mcf.setThreaded(isThreaded());
mcf.setDaemon(isDaemon());
mcf.setServiceUrl(getJMXServiceURL());
try {
mcf.createConnector();
} catch (IOException ex) {
connectFailed = true;
LOG.log(Level.SEVERE, "START_CONNECTOR_FAILURE_MSG", new Object[]{ex});
}
if (!connectFailed && null != bus) {
try {
//Register Bus here since we can guarantee that Instrumentation
//infrastructure has been initialized.
ManagedBus mbus = new ManagedBus(bus);
register(mbus);
} catch (JMException jmex) {
LOG.log(Level.SEVERE, "REGISTER_FAILURE_MSG", new Object[]{bus, jmex});
}
}
}
}
public void register(Object obj, ObjectName name) throws JMException {
register(obj, name, false);
}
public void register(Object obj, ObjectName name, boolean forceRegistration) throws JMException {
if (!isEnabled() || connectFailed) {
return;
}
//Try to register as a Standard MBean
try {
registerMBeanWithServer(obj, name, forceRegistration);
} catch (NotCompliantMBeanException e) {
//If this is not a "normal" MBean, then try to deploy it using JMX annotations
assembler = new ModelMBeanAssembler();
ModelMBeanInfo mbi = assembler.getModelMbeanInfo(obj.getClass());
register(obj, name, mbi, forceRegistration);
}
}
public ObjectName register(ManagedComponent i) throws JMException {
ObjectName name = register(i, false);
return name;
}
public ObjectName register(ManagedComponent i, boolean forceRegistration) throws JMException {
ObjectName name = i.getObjectName();
register(i, name, forceRegistration);
return name;
}
public void unregister(ManagedComponent component) throws JMException {
ObjectName name = component.getObjectName();
unregister(name);
}
public void unregister(ObjectName name) throws JMException {
if (!isEnabled() || connectFailed) {
return;
}
busMBeans.remove(name);
mbs.unregisterMBean(name);
}
public MBeanServer getMBeanServer() {
return mbs;
}
public void shutdown() {
if (!isEnabled()) {
return;
}
try {
mcf.destroy();
} catch (IOException ex) {
LOG.log(Level.SEVERE, "STOP_CONNECTOR_FAILURE_MSG", new Object[]{ex});
}
}
public void initComplete() {
}
public void preShutdown() {
}
public void postShutdown() {
//Using the array to hold the busMBeans to avoid the CurrentModificationException
Object[] mBeans = busMBeans.toArray();
for (Object name : mBeans) {
busMBeans.remove((ObjectName)name);
try {
unregister((ObjectName)name);
} catch (JMException jmex) {
LOG.log(Level.SEVERE, "UNREGISTER_FAILURE_MSG", new Object[]{name, jmex});
}
}
}
private void register(Object obj, ObjectName name, ModelMBeanInfo mbi, boolean forceRegistration)
throws JMException {
RequiredModelMBean rtMBean =
(RequiredModelMBean)mbs.instantiate("javax.management.modelmbean.RequiredModelMBean");
rtMBean.setModelMBeanInfo(mbi);
try {
rtMBean.setManagedResource(obj, "ObjectReference");
} catch (InvalidTargetObjectTypeException itotex) {
throw new JMException(itotex.getMessage());
}
registerMBeanWithServer(rtMBean, name, forceRegistration);
}
private void registerMBeanWithServer(Object obj, ObjectName name, boolean forceRegistration)
throws JMException {
ObjectInstance instance = null;
try {
instance = mbs.registerMBean(obj, name);
} catch (InstanceAlreadyExistsException e) {
if (forceRegistration) {
mbs.unregisterMBean(name);
instance = mbs.registerMBean(obj, name);
} else {
throw e;
}
}
if (instance != null) {
busMBeans.add(name);
}
}
}
