Java MBeanServerConnection.queryNames方法代码示例

import javax.management.MBeanServerConnection; //导入方法依赖的package包/类
/**
 * Prints all MBeans of domain java.lang.
 * They are MBeans related to the JSR 174 that defines
 * package java.lang.management.
 */
private static void printMBeans(MBeanServerConnection mbsc) throws Exception {
    ObjectName filterName = new ObjectName("java.lang:*");
    Set<ObjectName> set = mbsc.queryNames(filterName, null);

    if ( set.size() == 0 ) {
        throw new RuntimeException("(ERROR) No MBean found with filter "
                + filterName);
    }

    System.out.println("---- MBeans found in domain java.lang :");

    for (Iterator<ObjectName> iter = set.iterator(); iter.hasNext(); ) {
        System.out.println(iter.next().toString());
    }

    System.out.println("\n") ;
}
 

import javax.management.MBeanServerConnection; //导入方法依赖的package包/类
/**
 * Find the first MBean with given canonical name and type.
 * @param mbs MBeanServerConnection to corresponding server
 * @param canonicalNamePart canonical name you are looking for
 * @param type given type for the object
 * @return ObjectName or null (default)
 */
public static ObjectName findObjectName(final MBeanServerConnection mbs, final String canonicalNamePart, final String type){
    try{
        for(final ObjectName on: mbs.queryNames(null,null)){
            final String fullObjectName = on.getCanonicalName();
            if(fullObjectName.contains(canonicalNamePart)){ //check if the canonicalNamePart is ok
                if(fullObjectName.contains(":type")){//make sure its a "valid" objectname
                    if(fullObjectName.split(":type")[1].contains(type)){//found your type
                        return on;
                    }
                }
            }
        }
    } catch (final IOException e) {
        log.log(Level.WARNING, "IO Exception during browse for ObjectNames with canonicalNamePart and given type. \n"
                + "See Stacktrace for more Information",e);
    }
    return null;
}
 

import javax.management.MBeanServerConnection; //导入方法依赖的package包/类
/**
 * test JMX connection to DataNode..
 * @throws Exception 
 */
@Test
public void testDataNode() throws Exception {
  int numDatanodes = 2;
  cluster = new MiniDFSCluster.Builder(config).numDataNodes(numDatanodes).build();
  cluster.waitActive();

  writeFile(cluster.getFileSystem(), new Path("/test"), 2);

  JMXGet jmx = new JMXGet();
  String serviceName = "DataNode";
  jmx.setService(serviceName);
  jmx.init();
  assertEquals(fileSize, Integer.parseInt(jmx.getValue("BytesWritten")));

  cluster.shutdown();
  MBeanServerConnection mbsc = ManagementFactory.getPlatformMBeanServer();
  ObjectName query = new ObjectName("Hadoop:service=" + serviceName + ",*");
  Set<ObjectName> names = mbsc.queryNames(query, null);
  assertTrue("No beans should be registered for " + serviceName, names.isEmpty());
}
 

import javax.management.MBeanServerConnection; //导入方法依赖的package包/类
private static void printAttrs(
        MBeanServerConnection mbsc1, Class<? extends Exception> expectX)
throws Exception {
    Set<ObjectName> names = mbsc1.queryNames(null, null);
    for (ObjectName name : names) {
        System.out.println(name + ":");
        MBeanInfo mbi = mbsc1.getMBeanInfo(name);
        MBeanAttributeInfo[] mbais = mbi.getAttributes();
        for (MBeanAttributeInfo mbai : mbais) {
            String attr = mbai.getName();
            Object value;
            try {
                value = mbsc1.getAttribute(name, attr);
            } catch (Exception e) {
                if (expectX != null && expectX.isInstance(e))
                    value = "<" + e + ">";
                else
                    throw e;
            }
            String s = "  " + attr + " = " + value;
            if (s.length() > 80)
                s = s.substring(0, 77) + "...";
            System.out.println(s);
        }
    }
}
 

import javax.management.MBeanServerConnection; //导入方法依赖的package包/类
/**
 * Dumps a local or remote MBeanServer's entire object tree for support purposes. Nested arrays and CompositeData
 * objects in MBean attribute values are handled.
 * 
 * @param connection
 *            the server connection (or server itself)
 * @param out
 *            PrintWriter to write the output to
 * @throws IOException
 *             Signals that an I/O exception has occurred.
 */
public static void dumpConnection(MBeanServerConnection connection, PrintWriter out) throws IOException
{
    JmxDumpUtil.showStartBanner(out);
    
    // Get all the object names
    Set<ObjectName> objectNames = connection.queryNames(null, null);

    // Sort the names (don't assume ObjectName implements Comparable in JDK 1.5)
    Set<ObjectName> newObjectNames = new TreeSet<ObjectName>(new Comparator<ObjectName>()
    {
        public int compare(ObjectName o1, ObjectName o2)
        {
            return o1.toString().compareTo(o2.toString());
        }
    });
    newObjectNames.addAll(objectNames);
    objectNames = newObjectNames;

    
    // Dump each MBean
    for (ObjectName objectName : objectNames)
    {
        try
        {
            printMBeanInfo(connection, objectName, out);
        }
        catch (JMException e)
        {
            // Sometimes beans can disappear while we are examining them
        }
    }
}
 

import javax.management.MBeanServerConnection; //导入方法依赖的package包/类
/**
 * Call Mbean server for some mbeans with same domain, attributes.
 *  with <em>attributebinding=true</em> you can save all attributes from all found objects
 * as your ant properties
 * @param jmxServerConnection
 * @param qry
 * @return The query result
 */
protected String jmxQuery(MBeanServerConnection jmxServerConnection,
        String qry) {
    String isError = null;
    Set<ObjectName> names = null;
    String resultproperty = getResultproperty();
    try {
        names = jmxServerConnection.queryNames(new ObjectName(qry), null);
        if (resultproperty != null) {
            setProperty(resultproperty + ".Length",Integer.toString(names.size()));
        }
    } catch (Exception e) {
        if (isEcho())
            handleErrorOutput(e.getMessage());
        return "Can't query mbeans " + qry;
    }

    if (resultproperty != null) {
        Iterator<ObjectName> it = names.iterator();
        int oindex = 0;
        String pname = null;
        while (it.hasNext()) {
            ObjectName oname = it.next();
            pname = resultproperty + "." + Integer.toString(oindex) + ".";
            oindex++;
                setProperty(pname + "Name", oname.toString());
                if (isAttributebinding()) {
                    bindAttributes(jmxServerConnection, resultproperty, pname, oname);
            
                }
            }
    }
    return isError;
}
 

import javax.management.MBeanServerConnection; //导入方法依赖的package包/类
protected static String getMemberId(final String jmxManagerHost, final int jmxManagerPort,
    final String memberName) throws Exception {
  JMXConnector connector = null;

  try {
    connector = JMXConnectorFactory.connect(new JMXServiceURL(String.format(
        "service:jmx:rmi://%1$s/jndi/rmi://%1$s:%2$d/jmxrmi", jmxManagerHost, jmxManagerPort)));

    MBeanServerConnection connection = connector.getMBeanServerConnection();

    ObjectName objectNamePattern = ObjectName.getInstance("GemFire:type=Member,*");

    QueryExp query = Query.eq(Query.attr("Name"), Query.value(memberName));

    Set<ObjectName> objectNames = connection.queryNames(objectNamePattern, query);

    assertNotNull(objectNames);
    assertFalse(objectNames.isEmpty());
    assertEquals(1, objectNames.size());

    // final ObjectName objectName = ObjectName.getInstance("GemFire:type=Member,Name=" +
    // memberName);
    ObjectName objectName = objectNames.iterator().next();

    // System.err.printf("ObjectName for Member with Name (%1$s) is %2$s%n", memberName,
    // objectName);

    return ObjectUtils.toString(connection.getAttribute(objectName, "Id"));
  } finally {
    IOUtils.close(connector);
  }
}
 

import javax.management.MBeanServerConnection; //导入方法依赖的package包/类
/**
 * test JMX connection to NameNode..
 * @throws Exception 
 */
@Test
public void testNameNode() throws Exception {
  int numDatanodes = 2;
  cluster = new MiniDFSCluster.Builder(config).numDataNodes(numDatanodes).build();
  cluster.waitActive();

  writeFile(cluster.getFileSystem(), new Path("/test1"), 2);

  JMXGet jmx = new JMXGet();
  String serviceName = "NameNode";
  jmx.setService(serviceName);
  jmx.init(); // default lists namenode mbeans only
  assertTrue("error printAllValues", checkPrintAllValues(jmx));

  //get some data from different source
  assertEquals(numDatanodes, Integer.parseInt(
      jmx.getValue("NumLiveDataNodes")));
  assertGauge("CorruptBlocks", Long.parseLong(jmx.getValue("CorruptBlocks")),
              getMetrics("FSNamesystem"));
  assertEquals(numDatanodes, Integer.parseInt(
      jmx.getValue("NumOpenConnections")));

  cluster.shutdown();
  MBeanServerConnection mbsc = ManagementFactory.getPlatformMBeanServer();
  ObjectName query = new ObjectName("Hadoop:service=" + serviceName + ",*");
  Set<ObjectName> names = mbsc.queryNames(query, null);
  assertTrue("No beans should be registered for " + serviceName, names.isEmpty());
}
 

import javax.management.MBeanServerConnection; //导入方法依赖的package包/类
private Set<ObjectName> getMetricObjectNames(MBeanServerConnection mbs) {
  Set<ObjectName> objectNames = null;
  try {
    objectNames = mbs.queryNames(null, null);
  } catch (IOException e) {
    LOG.error("Failed to get object names", e);
  }
  return objectNames;
}
 

import javax.management.MBeanServerConnection; //导入方法依赖的package包/类
private final int doGarbageCollectorMXBeanTest(MBeanServerConnection mbsc) {
    int errorCount = 0 ;
    System.out.println("---- GarbageCollectorMXBean") ;

    try {
        ObjectName filterName =
                new ObjectName(ManagementFactory.GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE
                + ",*");
        Set<ObjectName> onSet = mbsc.queryNames(filterName, null);

        for (Iterator<ObjectName> iter = onSet.iterator(); iter.hasNext(); ) {
            ObjectName garbageName = iter.next() ;
            System.out.println("-------- " + garbageName) ;
            MBeanInfo mbInfo = mbsc.getMBeanInfo(garbageName);
            errorCount += checkNonEmpty(mbInfo);
            System.out.println("getMBeanInfo\t\t" + mbInfo);
            GarbageCollectorMXBean garbage = null ;

            garbage =
                    JMX.newMXBeanProxy(mbsc,
                    garbageName,
                    GarbageCollectorMXBean.class) ;
            System.out.println("getCollectionCount\t\t"
                    + garbage.getCollectionCount());
            System.out.println("getCollectionTime\t\t"
                    + garbage.getCollectionTime());
        }

        System.out.println("---- OK\n") ;
    } catch (Exception e) {
        Utils.printThrowable(e, true) ;
        errorCount++ ;
        System.out.println("---- ERROR\n") ;
    }

    return errorCount ;
}
 

import javax.management.MBeanServerConnection; //导入方法依赖的package包/类
private final int doMemoryManagerMXBeanTest(MBeanServerConnection mbsc) {
    int errorCount = 0 ;
    System.out.println("---- MemoryManagerMXBean") ;

    try {
        ObjectName filterName =
                new ObjectName(ManagementFactory.MEMORY_MANAGER_MXBEAN_DOMAIN_TYPE
                + ",*");
        Set<ObjectName> onSet = mbsc.queryNames(filterName, null);

        for (Iterator<ObjectName> iter = onSet.iterator(); iter.hasNext(); ) {
            ObjectName memoryManagerName = iter.next() ;
            System.out.println("-------- " + memoryManagerName) ;
            MBeanInfo mbInfo = mbsc.getMBeanInfo(memoryManagerName);
            System.out.println("getMBeanInfo\t\t" + mbInfo);
            errorCount += checkNonEmpty(mbInfo);
            MemoryManagerMXBean memoryManager = null;

            memoryManager =
                    JMX.newMXBeanProxy(mbsc,
                    memoryManagerName,
                    MemoryManagerMXBean.class) ;
            System.out.println("getMemoryPoolNames\t\t"
                    + Arrays.deepToString(memoryManager.getMemoryPoolNames()));
            System.out.println("getName\t\t"
                    + memoryManager.getName());
            System.out.println("isValid\t\t"
                    + memoryManager.isValid());
        }

        System.out.println("---- OK\n") ;
    } catch (Exception e) {
        Utils.printThrowable(e, true) ;
        errorCount++ ;
        System.out.println("---- ERROR\n") ;
    }

    return errorCount ;
}
 

import javax.management.MBeanServerConnection; //导入方法依赖的package包/类
/**
 * Prints all MBeans whatever the domain is.
 */
private static void printMBeans(MBeanServerConnection mbsc) throws Exception {
    Set<ObjectName> set = mbsc.queryNames(null, null);
    System.out.println("---- MBeans found :");

    for (Iterator<ObjectName> iter = set.iterator(); iter.hasNext(); ) {
        System.out.println(iter.next().toString());
    }

    System.out.println("\n") ;
}
 

import javax.management.MBeanServerConnection; //导入方法依赖的package包/类
/**
 * Call Mbean server for some mbeans with same domain, attributes. with
 * <em>attributebinding=true</em> you can save all attributes from all found
 * objects as your ant properties
 * 
 * @param jmxServerConnection
 * @param qry
 * @return The query result
 */
protected String jmxQuery(MBeanServerConnection jmxServerConnection, String qry) {
	String isError = null;
	Set<ObjectName> names = null;
	String resultproperty = getResultproperty();
	try {
		names = jmxServerConnection.queryNames(new ObjectName(qry), null);
		if (resultproperty != null) {
			setProperty(resultproperty + ".Length", Integer.toString(names.size()));
		}
	} catch (Exception e) {
		if (isEcho())
			handleErrorOutput(e.getMessage());
		return "Can't query mbeans " + qry;
	}

	if (resultproperty != null) {
		Iterator<ObjectName> it = names.iterator();
		int oindex = 0;
		String pname = null;
		while (it.hasNext()) {
			ObjectName oname = it.next();
			pname = resultproperty + "." + Integer.toString(oindex) + ".";
			oindex++;
			setProperty(pname + "Name", oname.toString());
			if (isAttributebinding()) {
				bindAttributes(jmxServerConnection, resultproperty, pname, oname);

			}
		}
	}
	return isError;
}
 

import javax.management.MBeanServerConnection; //导入方法依赖的package包/类
/**
 * Find all MBeans with the given canonical name in it.
 * Used for looking which MBeans are registered to one namespace.
 *      eg. java.net.xyz
 * @param mbs MBeanServerConnection to corresponding server.
 * @param canonicalNamePart canonical name you are looking for.
 * @return ObjectName or Null
 */
public static List<ObjectName> findObjectNames(final MBeanServerConnection mbs, final String canonicalNamePart){
    final List<ObjectName> names = new ArrayList<ObjectName>();
    try{
        for(final ObjectName on: mbs.queryNames(null,null)){
            if(on.getCanonicalName().contains(canonicalNamePart))
                names.add(on);
        }
        return names;
    } catch (final IOException e) {
        log.log(Level.WARNING, "IO Exception during browse for ObjectNames with canonicalNamePart. \n"
                + "See Stacktrace for more Information",e);
    }
    return null;
}
 

import javax.management.MBeanServerConnection; //导入方法依赖的package包/类
/**
 * The Configuration may contain MBean ObjectNames that are querys that need to be expanded before we can get the attributes for them.
 * If a configName starts with the {@value #OBJECT_NAME_QUERY_PREFIX} then the rest of the string is interpreted as a query to be run.
 * @param connection
 * @param config
 * @throws MalformedObjectNameException
 * @throws IOException
 * @return
 */
private static HashMap<String, String[]> expandMBeanNames(MBeanServerConnection connection, HashMap<String, String[]> config) throws MalformedObjectNameException, IOException {

    HashMap<String, String[]> expandedConfig = new LinkedHashMap<String, String[]>(config.size());

    // Expand any Query config items at the beginning
    String[] configNames = config.keySet().toArray(new String[0]);
    for (String configName : configNames) {

        if (configName.startsWith(OBJECT_NAME_QUERY_PREFIX)) {
            Set<ObjectName> realNames = connection.queryNames(new ObjectName(configName.substring(OBJECT_NAME_QUERY_PREFIX.length())), null);
            if (realNames.size() > 0) {
                for(ObjectName realName : realNames) {
                    System.err.printf("Query Found MBean %s\n", realName.getCanonicalName());
                    expandedConfig.put(realName.getCanonicalName(), config.get(configName));
                }
            }
            else {
                System.err.printf("Query Found zero (0) MBeans : %s\n", configName);
            }
        }
        else {
            expandedConfig.put(configName, config.get(configName));
        }

    }

    return expandedConfig;

}