/**
*
* 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.hadoop.hbase;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.CoprocessorEnvironment;
import org.apache.hadoop.hbase.coprocessor.*;
import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.rmi.registry.LocateRegistry;
import java.rmi.server.RMIClientSocketFactory;
import java.rmi.server.RMIServerSocketFactory;
import java.util.HashMap;
import javax.management.MBeanServer;
import javax.management.remote.JMXConnectorServer;
import javax.management.remote.JMXConnectorServerFactory;
import javax.management.remote.JMXServiceURL;
import javax.management.remote.rmi.RMIConnectorServer;
import javax.rmi.ssl.SslRMIClientSocketFactory;
import javax.rmi.ssl.SslRMIServerSocketFactory;
/**
* Pluggable JMX Agent for HBase(to fix the 2 random TCP ports issue
* of the out-of-the-box JMX Agent):
* 1)connector port can share with the registry port if SSL is OFF
* 2)support password authentication
* 3)support subset of SSL (with default configuration)
*/
public class JMXListener implements Coprocessor {
public static final Log LOG = LogFactory.getLog(JMXListener.class);
public static final String RMI_REGISTRY_PORT_CONF_KEY = ".rmi.registry.port";
public static final String RMI_CONNECTOR_PORT_CONF_KEY = ".rmi.connector.port";
public static final int defRMIRegistryPort = 10102;
/**
* workaround for HBASE-11146
* master and regionserver are in 1 JVM in standalone mode
* only 1 JMX instance is allowed, otherwise there is port conflict even if
* we only load regionserver coprocessor on master
*/
private static JMXConnectorServer jmxCS = null;
public static JMXServiceURL buildJMXServiceURL(int rmiRegistryPort,
int rmiConnectorPort) throws IOException {
// Build jmxURL
StringBuilder url = new StringBuilder();
url.append("service:jmx:rmi://localhost:");
url.append(rmiConnectorPort);
url.append("/jndi/rmi://localhost:");
url.append(rmiRegistryPort);
url.append("/jmxrmi");
return new JMXServiceURL(url.toString());
}
public void startConnectorServer(int rmiRegistryPort, int rmiConnectorPort)
throws IOException {
boolean rmiSSL = false;
boolean authenticate = true;
String passwordFile = null;
String accessFile = null;
System.setProperty("java.rmi.server.randomIDs", "true");
String rmiSSLValue = System.getProperty("com.sun.management.jmxremote.ssl",
"false");
rmiSSL = Boolean.parseBoolean(rmiSSLValue);
String authenticateValue =
System.getProperty("com.sun.management.jmxremote.authenticate", "false");
authenticate = Boolean.parseBoolean(authenticateValue);
passwordFile = System.getProperty("com.sun.management.jmxremote.password.file");
accessFile = System.getProperty("com.sun.management.jmxremote.access.file");
LOG.info("rmiSSL:" + rmiSSLValue + ",authenticate:" + authenticateValue
+ ",passwordFile:" + passwordFile + ",accessFile:" + accessFile);
// Environment map
HashMap<String, Object> jmxEnv = new HashMap<String, Object>();
RMIClientSocketFactory csf = null;
RMIServerSocketFactory ssf = null;
if (rmiSSL) {
if (rmiRegistryPort == rmiConnectorPort) {
throw new IOException("SSL is enabled. " +
"rmiConnectorPort cannot share with the rmiRegistryPort!");
}
csf = new SslRMIClientSocketFactory();
ssf = new SslRMIServerSocketFactory();
}
if (csf != null) {
jmxEnv.put(RMIConnectorServer.RMI_CLIENT_SOCKET_FACTORY_ATTRIBUTE, csf);
}
if (ssf != null) {
jmxEnv.put(RMIConnectorServer.RMI_SERVER_SOCKET_FACTORY_ATTRIBUTE, ssf);
}
// Configure authentication
if (authenticate) {
jmxEnv.put("jmx.remote.x.password.file", passwordFile);
jmxEnv.put("jmx.remote.x.access.file", accessFile);
}
// Create the RMI registry
LocateRegistry.createRegistry(rmiRegistryPort);
// Retrieve the PlatformMBeanServer.
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
// Build jmxURL
JMXServiceURL serviceUrl = buildJMXServiceURL(rmiRegistryPort, rmiConnectorPort);
try {
// Start the JMXListener with the connection string
jmxCS = JMXConnectorServerFactory.newJMXConnectorServer(serviceUrl, jmxEnv, mbs);
jmxCS.start();
LOG.info("ConnectorServer started!");
} catch (IOException e) {
LOG.error("fail to start connector server!", e);
}
}
public void stopConnectorServer() throws IOException {
synchronized(JMXListener.class) {
if (jmxCS != null) {
jmxCS.stop();
LOG.info("ConnectorServer stopped!");
jmxCS = null;
}
}
}
@Override
public void start(CoprocessorEnvironment env) throws IOException {
int rmiRegistryPort = -1;
int rmiConnectorPort = -1;
Configuration conf = env.getConfiguration();
if (env instanceof MasterCoprocessorEnvironment) {
LOG.error("JMXListener should not be loaded in Master Environment!");
} else if (env instanceof RegionServerCoprocessorEnvironment) {
// running on RegionServer --since 0.99 HMaster is also a HRegionServer
rmiRegistryPort =
conf.getInt("regionserver" + RMI_REGISTRY_PORT_CONF_KEY, defRMIRegistryPort);
rmiConnectorPort =
conf.getInt("regionserver" + RMI_CONNECTOR_PORT_CONF_KEY, rmiRegistryPort);
LOG.info("RegionServer rmiRegistryPort:" + rmiRegistryPort
+ ",RegionServer rmiConnectorPort:" + rmiConnectorPort);
} else if (env instanceof RegionCoprocessorEnvironment) {
LOG.error("JMXListener should not be loaded in Region Environment!");
}
synchronized(JMXListener.class) {
if (jmxCS != null) {
LOG.info("JMXListener has been started at Registry port " + rmiRegistryPort);
}
else {
startConnectorServer(rmiRegistryPort, rmiConnectorPort);
}
}
}
@Override
public void stop(CoprocessorEnvironment env) throws IOException {
stopConnectorServer();
}
}