使用JMX监控Zookeeper状态Java API

import java.io.IOException;import java.lang.management.ClassLoadingMXBean;import java.lang.management.CompilationMXBean;import java.lang.management.ManagementFactory;import java.lang.management.OperatingSystemMXBean;import java.lang.management.ThreadMXBean;import java.util.ArrayList;import java.util.Arrays;import java.util.Collections;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.Map;import java.util.Set;import javax.management.InstanceNotFoundException;import javax.management.IntrospectionException;import javax.management.JMX;import javax.management.MBeanServerConnection;import javax.management.MalformedObjectNameException;import javax.management.ObjectName;import javax.management.ReflectionException;import javax.management.remote.JMXConnector;import javax.management.remote.JMXConnectorFactory;import javax.management.remote.JMXServiceURL;import org.apache.zookeeper.server.ConnectionMXBean;import org.apache.zookeeper.server.DataTreeMXBean;import org.apache.zookeeper.server.ZooKeeperServerMXBean;public class ZkJMXTest {  static JMXConnector connector;  /**   * @param args   * @throws IOException   * @throws MalformedObjectNameException   * @throws InstanceNotFoundException   * @throws ReflectionException   * @throws IntrospectionException   */  public static void main(String[] args) throws IOException, MalformedObjectNameException,    InstanceNotFoundException, IntrospectionException, ReflectionException {    OperatingSystemMXBean osbean = ManagementFactory.getOperatingSystemMXBean();    System.out.println("体系结构:" + osbean.getArch());//操作系统体系结构    System.out.println("处理器核数:" + osbean.getAvailableProcessors());///核数    System.out.println("名字:" + osbean.getName());//名字    System.out.println(osbean.getVersion());//操作系统版本    ThreadMXBean threadBean=ManagementFactory.getThreadMXBean();    System.out.println("活动线程:" + threadBean.getThreadCount());//总线程数    ClassLoadingMXBean classLoadingMXBean = ManagementFactory.getClassLoadingMXBean();    CompilationMXBean compilationMXBean = ManagementFactory.getCompilationMXBean();    System.out.println("===========");    // 通过 MBeanServer间接地访问 MXBean 接口    MBeanServerConnection mbsc = createMBeanServer("192.168.1.100", "9991", "controlRole", "123456");    // 操作系统    ObjectName os = new ObjectName("java.lang:type=OperatingSystem");    System.out.println("体系结构:" + getAttribute(mbsc, os, "Arch"));//体系结构    System.out.println("处理器核数:" + getAttribute(mbsc, os, "AvailableProcessors"));//核数    System.out.println("总物理内存:" + getAttribute(mbsc, os, "TotalPhysicalMemorySize"));//总物理内存    System.out.println("空闲物理内存:" + getAttribute(mbsc, os, "FreePhysicalMemorySize"));//空闲物理内存    System.out.println("总交换空间:" + getAttribute(mbsc, os, "TotalSwapSpaceSize"));//总交换空间    System.out.println("空闲交换空间:" + getAttribute(mbsc, os, "FreeSwapSpaceSize"));//空闲交换空间    System.out.println("操作系统:" + getAttribute(mbsc, os, "Name")+ getAttribute(mbsc, os, "Version"));//操作系统    System.out.println("提交的虚拟内存:" + getAttribute(mbsc, os, "CommittedVirtualMemorySize"));//提交的虚拟内存    System.out.println("系统cpu使用率:" + getAttribute(mbsc, os, "SystemCpuLoad"));//系统cpu使用率    System.out.println("进程cpu使用率:" + getAttribute(mbsc, os, "ProcessCpuLoad"));//进程cpu使用率    System.out.println("============");//    // 线程    ObjectName Threading = new ObjectName("java.lang:type=Threading");    System.out.println("活动线程:" + getAttribute(mbsc, Threading, "ThreadCount"));// 活动线程    System.out.println("守护程序线程:" + getAttribute(mbsc, Threading, "DaemonThreadCount"));// 守护程序线程    System.out.println("峰值:" + getAttribute(mbsc, Threading, "PeakThreadCount"));// 峰值    System.out.println("启动的线程总数:" + getAttribute(mbsc, Threading, "TotalStartedThreadCount"));// 启动的线程总数    ThreadMXBean threadBean2 = ManagementFactory.newPlatformMXBeanProxy        (mbsc, ManagementFactory.THREAD_MXBEAN_NAME, ThreadMXBean.class);    System.out.println("活动线程:" + threadBean2.getThreadCount());// 活动线程    ThreadMXBean threadBean3 = ManagementFactory.getThreadMXBean();    System.out.println("本地活动线程:" + threadBean3.getThreadCount());// 本地活动线程    System.out.println("============");//    ObjectName Compilation = new ObjectName("java.lang:type=Compilation");    System.out.println("总编译时间 毫秒:" + getAttribute(mbsc, Compilation, "TotalCompilationTime"));// 总编译时间 毫秒    System.out.println("============");//    ObjectName ClassLoading = new ObjectName("java.lang:type=ClassLoading");    System.out.println("已加载类总数:" + getAttribute(mbsc, ClassLoading, "TotalLoadedClassCount"));// 已加载类总数    System.out.println("已加装当前类:" + getAttribute(mbsc, ClassLoading, "LoadedClassCount"));// 已加装当前类    System.out.println("已卸载类总数:" + getAttribute(mbsc, ClassLoading, "UnloadedClassCount"));// 已卸载类总数    System.out.println("==========================================================");//    // http://zookeeper.apache.org/doc/r3.4.6/zookeeperJMX.html    // org.apache.ZooKeeperService:name0=ReplicatedServer_id1,name1=replica.1,name2=Follower    ObjectName replica = new ObjectName("org.apache.ZooKeeperService:name0=ReplicatedServer_id1,name1=replica.1");    System.out.println("replica.1运行状态:" + getAttribute(mbsc, replica, "State"));// 运行状态    mbsc = createMBeanServer("192.168.1.100", "9992", "controlRole", "123456");    System.out.println("==============节点树对象===========");    ObjectName dataTreePattern = new ObjectName("org.apache.ZooKeeperService:name0=ReplicatedServer_id?,name1=replica.?,name2=*,name3=InMemoryDataTree");    Set<ObjectName> dataTreeSets = mbsc.queryNames(dataTreePattern, null);    Iterator<ObjectName> dataTreeIterator = dataTreeSets.iterator();    // 只有一个    while (dataTreeIterator.hasNext()) {      ObjectName dataTreeObjectName = dataTreeIterator.next();      DataTreeMXBean dataTree = JMX.newMBeanProxy(mbsc, dataTreeObjectName, DataTreeMXBean.class);      System.out.println("节点总数:" + dataTree.getNodeCount());// 节点总数      System.out.println("Watch总数:" + dataTree.getWatchCount());// Watch总数      System.out.println("临时节点总数:" + dataTree.countEphemerals());// Watch总数      System.out.println("节点名及字符总数:" + dataTree.approximateDataSize());// 节点全路径和值的总字符数      Map<String, String> dataTreeMap = dataTreeObjectName.getKeyPropertyList();      String replicaId = dataTreeMap.get("name1").replace("replica.", "");      String role = dataTreeMap.get("name2");// Follower,Leader,Observer,Standalone      String canonicalName = dataTreeObjectName.getCanonicalName();      int roleEndIndex = canonicalName.indexOf(",name3");      ObjectName roleObjectName = new ObjectName(canonicalName.substring(0, roleEndIndex));      System.out.println("==============zk服务状态===========");      ZooKeeperServerMXBean ZooKeeperServer = JMX.newMBeanProxy(mbsc, roleObjectName, ZooKeeperServerMXBean.class);      System.out.println(role + " 的IP和端口:" + ZooKeeperServer.getClientPort());// IP和端口      System.out.println(role + " 活着的连接数:" + ZooKeeperServer.getNumAliveConnections());// 连接数      System.out.println(role + " 未完成请求数:" + ZooKeeperServer.getOutstandingRequests());// 未完成的请求数      System.out.println(role + " 接收的包:" + ZooKeeperServer.getPacketsReceived());// 收到的包      System.out.println(role + " 发送的包:" + ZooKeeperServer.getPacketsSent());// 发送的包      System.out.println(role + " 平均延迟（毫秒）:" + ZooKeeperServer.getAvgRequestLatency());      System.out.println(role + " 最大延迟（毫秒）:" + ZooKeeperServer.getMaxRequestLatency());      System.out.println(role + " 每个客户端IP允许的最大连接数:" + ZooKeeperServer.getMaxClientCnxnsPerHost());      System.out.println(role + " 最大Session超时（毫秒）:" + ZooKeeperServer.getMaxSessionTimeout());      System.out.println(role + " 心跳时间（毫秒）:" + ZooKeeperServer.getTickTime());      System.out.println(role + " 版本:" + ZooKeeperServer.getVersion());// 版本      // 三个重置操作//      ZooKeeperServer.resetLatency(); //重置min/avg/max latency statistics//      ZooKeeperServer.resetMaxLatency(); //重置最大延迟统计//      ZooKeeperServer.resetStatistics(); // 重置包和延迟所有统计      System.out.println("==============所有客户端的连接信息===========");      ObjectName connectionPattern = new ObjectName("org.apache.ZooKeeperService:name0=ReplicatedServer_id?,name1=replica.?,name2=*,name3=Connections,*");      Set<ObjectName> connectionSets = mbsc.queryNames(connectionPattern, null);      List<ObjectName> connectionList = new ArrayList<ObjectName>(connectionSets.size());      connectionList.addAll(connectionSets);      Collections.sort(connectionList);      for (ObjectName connectionON : connectionList) {        System.out.println("=========================");        ConnectionMXBean connectionBean = JMX.newMBeanProxy(mbsc, connectionON, ConnectionMXBean.class);        System.out.println(" IP+Port:" + connectionBean.getSourceIP());//        System.out.println(" SessionId:" + connectionBean.getSessionId());//        System.out.println(" PacketsReceived:" + connectionBean.getPacketsReceived());// 收到的包        System.out.println(" PacketsSent:" + connectionBean.getPacketsSent());// 发送的包        System.out.println(" MinLatency:" + connectionBean.getMinLatency());//        System.out.println(" AvgLatency:" + connectionBean.getAvgLatency());//        System.out.println(" MaxLatency:" + connectionBean.getMaxLatency());//        System.out.println(" StartedTime:" + connectionBean.getStartedTime());//        System.out.println(" EphemeralNodes:" + connectionBean.getEphemeralNodes().length);//        System.out.println(" EphemeralNodes:" + Arrays.asList(connectionBean.getEphemeralNodes()));//        System.out.println(" OutstandingRequests:" + connectionBean.getOutstandingRequests());//        //connectionBean.resetCounters();        //connectionBean.terminateConnection();        //connectionBean.terminateSession();      }    }    // close connection    if (connector != null) {      connector.close();    }  }  /**   * 建立连接   * @param ip   * @param jmxport   * @return   */  public static MBeanServerConnection createMBeanServer(String ip,      String jmxport, String userName, String password) {    try {      String jmxURL = "service:jmx:rmi:///jndi/rmi://" + ip + ":"          + jmxport + "/jmxrmi";      // jmxurl      JMXServiceURL serviceURL = new JMXServiceURL(jmxURL);      Map<String, String[]> map = new HashMap<String, String[]>();      String[] credentials = new String[] { userName, password };      map.put("jmx.remote.credentials", credentials);      connector = JMXConnectorFactory.connect(serviceURL, map);      MBeanServerConnection mbsc = connector.getMBeanServerConnection();      return mbsc;    } catch (IOException ioe) {      ioe.printStackTrace();      System.err.println(ip + ":" + jmxport + " 连接建立失败");    }    return null;  }  /**   * 使用MBeanServer获取对象名为[objName]的MBean的[objAttr]属性值   * <p>   * 静态代码: return MBeanServer.getAttribute(ObjectName name, String attribute)   * @param mbeanServer   *      - MBeanServer实例   * @param objName   *      - MBean的对象名   * @param objAttr   *      - MBean的某个属性名   * @return 属性值   */  private static String getAttribute(MBeanServerConnection mbeanServer,      ObjectName objName, String objAttr) {    if (mbeanServer == null || objName == null || objAttr == null)      throw new IllegalArgumentException();    try {      return String.valueOf(mbeanServer.getAttribute(objName, objAttr));    } catch (Exception e) {      return null;    }  }}