org.apache.solr.util.JmxUtil Maven / Gradle / Ivy
/*
* 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.solr.util;
import javax.management.MBeanServer;
import javax.management.MBeanServerFactory;
import javax.management.remote.JMXConnectorServer;
import javax.management.remote.JMXConnectorServerFactory;
import javax.management.remote.JMXServiceURL;
import java.io.IOException;
import java.util.List;
/**
* Utility methods to find a MBeanServer.
*/
public final class JmxUtil {
/**
* Retrieve the first MBeanServer found.
*
* @return the first MBeanServer found
*/
public static MBeanServer findFirstMBeanServer() {
return findMBeanServerForAgentId(null);
}
/**
* Find a MBeanServer given a service url.
*
* @param serviceUrl the service url
* @return a MBeanServer
*/
public static MBeanServer findMBeanServerForServiceUrl(String serviceUrl) throws IOException {
if (serviceUrl == null) {
return null;
}
MBeanServer server = MBeanServerFactory.newMBeanServer();
JMXConnectorServer connector = JMXConnectorServerFactory
.newJMXConnectorServer(new JMXServiceURL(serviceUrl), null, server);
connector.start();
return server;
}
/**
* Find a MBeanServer given an agent id.
*
* @param agentId the agent id
* @return a MBeanServer
*/
public static MBeanServer findMBeanServerForAgentId(String agentId) {
List servers = MBeanServerFactory.findMBeanServer(agentId);
if (servers == null || servers.isEmpty()) {
return null;
}
return servers.get(0);
}
}