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 dataTreeSets = mbsc.queryNames(dataTreePattern, null); Iterator 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 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 connectionSets = mbsc.queryNames(connectionPattern, null); List connectionList = new ArrayList(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 map = new HashMap(); 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 * 
 * 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; } } }