- import java.lang.management.MemoryUsage;
- import java.text.SimpleDateFormat;
- import java.util.Date;
- import java.util.Formatter;
- import java.util.HashMap;
- import java.util.Iterator;
- import java.util.Map;
- import java.util.Set;
- import javax.management.MBeanAttributeInfo;
- import javax.management.MBeanInfo;
- import javax.management.MBeanServerConnection;
- import javax.management.ObjectInstance;
- import javax.management.ObjectName;
- import javax.management.openmbean.CompositeDataSupport;
- import javax.management.remote.JMXConnector;
- import javax.management.remote.JMXConnectorFactory;
- import javax.management.remote.JMXServiceURL;
- public class JMX Test {
- /**
- * @param args
- */
- publicstaticvoid main(String[] args) {
- try {
- String jmxURL = "service:jmx:rmi:///jndi/rmi://127.0.0.1:8999/jmxrmi";
- JMXServiceURL serviceURL = new JMXServiceURL(jmxURL);
- Map map = new HashMap();
- String[] credentials = new String[] { "monitorRole", "tomcat" };
- map.put("jmx.remote.credentials", credentials);
- JMXConnector connector = JMXConnectorFactory.connect(serviceURL,
- map);
- MBeanServerConnection mbsc = connector.getMBeanServerConnection();
- // Ports are best obtained dynamically
- ObjectName threadObjName = new ObjectName(
- "Catalina:type=ThreadPool,name=http-8080");
- MBeanInfo mbInfo = mbsc.getMBeanInfo(threadObjName);
- String attrName = "currentThreadCount" ; // attribute value corresponding to the number of threads in tomcat
- MBeanAttributeInfo[] mbAttributes = mbInfo.getAttributes();
- System.out.println("currentThreadCount:"
- + mbsc.getAttribute(threadObjName, attrName));
- // heap
- for (int j = 0; j < mbsc.getDomains().length; j++) {
- System.out.println("###########" + mbsc.getDomains()[j]);
- }
- Set MBeanset = mbsc.queryMBeans(null, null);
- System.out.println("MBeanset.size() : " + MBeanset.size());
- Iterator MBeansetIterator = MBeanset.iterator();
- while (MBeansetIterator.hasNext()) {
- ObjectInstance objectInstance = (ObjectInstance) MBeansetIterator
- .next();
- ObjectName objectName = objectInstance.getObjectName();
- String canonicalName = objectName.getCanonicalName();
- System.out.println("canonicalName : " + canonicalName);
- if (canonicalName
- .equals("Catalina:host=localhost,type=Cluster")) {
- // Get details of cluster MBeans
- System.out.println("Cluster MBeans Details:");
- System.out
- .println("=========================================");
- // getMBeansDetails(canonicalName);
- String canonicalKeyPropList = objectName
- .getCanonicalKeyPropertyListString();
- }
- }
- // ------------------------- system ----------------------
- ObjectName runtimeObjName = new ObjectName("java.lang:type=Runtime");
- System.out.println( "Manufacturer:"
- + (String) mbsc.getAttribute(runtimeObjName, "VmVendor"));
- System.out.println( "Program:"
- + (String) mbsc.getAttribute(runtimeObjName, "VmName"));
- System.out.println( "Version:"
- + (String) mbsc.getAttribute(runtimeObjName, "VmVersion"));
- Date starttime = new Date((Long) mbsc.getAttribute(runtimeObjName,
- "StartTime"));
- SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
- System.out.println( "Startup time:" + df.format(starttime));
- Long timespan = (Long) mbsc.getAttribute(runtimeObjName, "Uptime");
- System.out.println( "Continuous working time:" + JMXTest.formatTimeSpan(timespan));
- // ------------------------ JVM -------------------------
- // heap usage
- ObjectName heapObjName = new ObjectName("java.lang:type=Memory");
- MemoryUsage heapMemoryUsage = MemoryUsage
- .from((CompositeDataSupport) mbsc.getAttribute(heapObjName,
- "HeapMemoryUsage"));
- long maxMemory = heapMemoryUsage.getMax (); // Bank maximum
- long commitMemory = heapMemoryUsage.getCommitted(); // heap currently allocated
- long usedMemory = heapMemoryUsage.getUsed();
- System.out.println("heap:" + (double) usedMemory * 100
- / commitMemory + "%" ); // heap usage
- MemoryUsage nonheapMemoryUsage = MemoryUsage
- .from((CompositeDataSupport) mbsc.getAttribute(heapObjName,
- "NonHeapMemoryUsage"));
- long noncommitMemory = nonheapMemoryUsage.getCommitted();
- long nonusedMemory = heapMemoryUsage.getUsed();
- System.out.println("nonheap:" + (double) nonusedMemory * 100
- / noncommitMemory + "%");
- ObjectName permObjName = new ObjectName(
- "java.lang:type=MemoryPool,name=Perm Gen");
- MemoryUsage permGenUsage = MemoryUsage
- .from((CompositeDataSupport) mbsc.getAttribute(permObjName,
- "Usage"));
- long committed = permGenUsage.getCommitted(); // persistent heap size
- long used = heapMemoryUsage.getUsed();//
- System.out.println("perm gen:" + (double) used * 100 / committed
- + "%" ); // persistent heap usage
- // -------------------- Session ---------------
- ObjectName managerObjName = new ObjectName(
- "Catalina:type=Manager,*");
- Set<ObjectName> s = mbsc.queryNames(managerObjName, null);
- for (ObjectName obj : s) {
- System.out.println("应用名:" + obj.getKeyProperty("path"));
- ObjectName objname = new ObjectName(obj.getCanonicalName());
- System.out.println( "Maximum number of sessions:"
- + mbsc.getAttribute(objname, "maxActiveSessions"));
- System.out.println( "Number of sessions:"
- + mbsc.getAttribute(objname, "activeSessions"));
- System.out.println( "Number of active sessions:"
- + mbsc.getAttribute(objname, "sessionCounter"));
- }
- // ----------------- Thread Pool ----------------
- ObjectName threadpoolObjName = new ObjectName(
- "Catalina:type=ThreadPool,*");
- Set<ObjectName> s2 = mbsc.queryNames(threadpoolObjName, null);
- for (ObjectName obj : s2) {
- System.out.println("端口名:" + obj.getKeyProperty("name"));
- ObjectName objname = new ObjectName(obj.getCanonicalName());
- System.out.println( "Maximum number of threads:"
- + mbsc.getAttribute(objname, "maxThreads"));
- System.out.println( "Current thread count:"
- + mbsc.getAttribute(objname, "currentThreadCount"));
- System.out.println( "Number of busy threads:"
- + mbsc.getAttribute(objname, "currentThreadsBusy"));
- }
- } catch (Exception e) {
- e.printStackTrace ();
- }
- }
- publicstatic String formatTimeSpan(long span) {
- long minseconds = span % 1000;
- span = span / 1000;
- long seconds = span % 60;
- span = span / 60;
- long mins = span % 60;
- span = span / 60;
- long hours = span % 24;
- span = span / 24;
- long days = span;
- return (new Formatter()).format("%1$d天 %2$02d:%3$02d:%4$02d.%5$03d",
- days, hours, mins, seconds, minseconds).toString();
- }
- }
jmx monitoring tomcat
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