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Example: Administering Java Management Extension-based interface

 

The page provides example code directly using Java Management Extension (JMX) API. For information on compiling your source code, see "Compiling your monitoring applications."

 

Example

package com.ibm.websphere.pmi;
 import com.ibm.websphere.management.AdminClient; import com.ibm.websphere.management.AdminClientFactory; import com.ibm.websphere.management.exception.ConnectorException; import com.ibm.websphere.management.exception.InvalidAdminClientTypeException; import com.ibm.websphere.management.exception.*;
 import java.util.*; import javax.management.*; import com.ibm.websphere.pmi.*; import com.ibm.websphere.pmi.client.*; import com.ibm.websphere.pmi.stat.*;

/**
 * Sample code using AdminClient API to get PMI data from PerfMBean
 * and individual MBeans.
 * 
 * @ibm-api
 */
 public class PmiJmxTest implements PmiConstants 
{

    private AdminClient    ac = null;
    private ObjectName     perfOName   = null;
    private ObjectName     serverOName = null;
    private ObjectName     wlmOName    = null;
    private ObjectName     jvmOName    = null;
    private ObjectName     orbtpOName    = null;
    private boolean failed = false;
    private PmiModuleConfig[] configs = null;

    /**
     *  Creates a new test object
     *  (Need a default constructor for the testing framework)
     */
    public PmiJmxTest() 
    {
    }

    /**
     * @param args[0] host
     * @param args[1] port, optional, default is 8880
     * @param args[2] connectorType, optional, default is SOAP connector
     *   
     */
    public static void main(String[] args) 
    {
        PmiJmxTest instance = new PmiJmxTest();

        // parse arguments and create AdminClient object
        instance.init(args);

        // navigate all the MBean ObjectNames and cache those we are interested
        instance.getObjectNames();

        boolean v6 = !(new Boolean(System.getProperty ("websphereV5Statistics"))).
          booleanValue();
        
        if( v6 )
        {
            // test V6 APIs
            instance.doTestV6();
        }
        else
        {

            // set level, get data, display data
            instance.doTest();

            // test for EJB data
            instance.testEJB();

            // how to use JSR77 getStats method for individual MBean other than PerfMBean
            instance.testJSR77Stats();
        }            

    }

    /**
     * parse args and getAdminClient
     */
    public void init(String[] args) 
    {

        try 
        {
            String  host    = null;
            String  port    = "8880";     
            String  connector = AdminClient.CONNECTOR_TYPE_SOAP;
            if(args.length < 1) {
                System.err.println("ERROR: Usage: PmiJmxTest <host> [<port>] [<connector>]");
                System.exit(2);
            }
            else 
            {
                host = args[0];

                if (args.length > 1)
                    port = args[1];

                if (args.length > 2)
                    connector = args[2];
            }

            if(host == null) {
                host = "localhost";
            }
            if(port == null) {
                port = "2809";
            }
            if (connector == null) {
                connector = AdminClient.CONNECTOR_TYPE_SOAP;
            }
            System.out.println("host=" + host + " , port=" + port + ",connector=" + connector);

            //--------------------------------------------------------------------
            // Get the ac object for the AppServer
            //---------------------------------------------------------------------
            System.out.println("main: create the adminclient");
            ac = getAdminClient(host, port, connector);

        } 
        catch (Exception ex) 
        {
            failed = true;
            new AdminException(ex).printStackTrace();
            ex.printStackTrace();
        }
    }

    /**
     * get AdminClient using the given host, port, and connector
     */
    public AdminClient getAdminClient(String hostStr, String portStr, String 
        connector) {
        System.out.println("getAdminClient: host=" + hostStr + " , portStr=" + portStr);
        AdminClient ac = null;
        java.util.Properties props = new java.util.Properties();
        props.put(AdminClient.CONNECTOR_TYPE, connector);
        props.put(AdminClient.CONNECTOR_HOST, hostStr);
        props.put(AdminClient.CONNECTOR_PORT, portStr);

        /* set the following properties if security is enabled and using SOAP 
      connector */
        /* The following shows how to set properties for SOAP connector when 
      security is enabled.
           See AdminClient javadoc for more info.
         Properties props = new Properties();      
        props.setProperty(AdminClient.CONNECTOR_HOST, "localhost");
        props.setProperty(AdminClient.CONNECTOR_PORT, "8880");
       props.setProperty(AdminClient.CONNECTOR_TYPE, AdminClient.CONNECTOR_
      TYPE_SOAP);
        props.setProperty(AdminClient.CONNECTOR_SECURITY_ENABLED, "true");
        props.setProperty(AdminClient.USERNAME, "test2");
       props.setProperty(AdminClient.PASSWORD, "user24test");
         props.setProperty("javax.net.ssl.trustStore", 
    "C:/WebSphere/AppServer/etc/DummyClientTrustFile.jks");
     props.setProperty("javax.net.ssl.keyStore", 
    "C:/WebSphere/AppServer/etc/DummyClientKeyFile.jks");
     props.setProperty("javax.net.ssl.trustStorePassword", "WebAS");
     props.setProperty("javax.net.ssl.keyStorePassword", "WebAS");
        */ 

        try {
            ac = AdminClientFactory.createAdminClient(props);
        }
        catch(Exception ex) {
            failed = true;
            new AdminException(ex).printStackTrace();
            System.out.println("getAdminClient: exception");
        }
        return ac;
    }


    /**
     * get all the ObjectNames.
     */
    public void getObjectNames() {

        try {

            //--------------------------------------------------------------------
            // Get a list of object names
            //--------------------------------------------------------------------
            javax.management.ObjectName on = new javax.management.ObjectName
      ("WebSphere:*");

            //---------------------------------------------------------------------
            // get all objectnames for this server
            //--------------------------------------------------------------------
           Set objectNameSet= ac.queryNames(on, null);

            //--------------------------------------------------------------------
            // get the object names that we care about: Perf, Server, JVM, WLM (only applicable in ND)
            //--------------------------------------------------------------------
            if(objectNameSet != null) {
                Iterator i = objectNameSet.iterator();
                while (i.hasNext()) {
                    on = (ObjectName)i.next();
                    String type = on.getKeyProperty("type");

                    // uncomment it if you want to print the ObjectName for each MBean
                    // System.out.println("\n\n" + on.toString());

                    // find the MBeans we are interested
                    if(type != null && type.equals("Perf")) {
                        System.out.println("\nMBean: perf =" + on.toString());
                        perfOName = on;
                    }
                    if(type != null && type.equals("Server")) {
                        System.out.println("\nMBean: Server =" + on.toString());
                        serverOName = on;
                    }
                    if(type != null && type.equals("JVM")) {
                        System.out.println("\nMBean: jvm =" + on.toString());
                        jvmOName = on;
                    }
                    if(type != null && type.equals("WLMAppServer")) {
                        System.out.println("\nmain: WLM =" + on.toString());
                        wlmOName = on;
                    }
                    if(type != null && type.equals("ThreadPool")) 
                    {
                        String name = on.getKeyProperty("name");
                        if (name.equals("ORB.thread.pool"))
                            System.out.println("\nMBean: ORB ThreadPool =" + on.toString());
                        orbtpOName = on;
                    }
                }
            }
            else {
                System.err.println("main: ERROR: no object names found");
                System.exit(2);
            }

            // You must have Perf MBean in order to get PMI data.
            if (perfOName == null) 
            {
                System.err.println("main: cannot get PerfMBean. Make sure PMI is enabled");
                System.exit(3);
            }
        }
        catch(Exception ex) 
        {
            failed = true;
            new AdminException(ex).printStackTrace();
            ex.printStackTrace();
        }

    }

    /** Test V6 APIs */
    public void doTestV6 ()
    {
        System.out.println ("\ndoTestV6() output:\n");

        // the following methods are specific to V6 and demonstrates the V6 API..so set the flag to false
        String v5PropFlag = System.setProperty ("websphereV5Statistics", "false");
        try
        {        
            Object[] params;
            String[] signature;
    
            // get current statistic set that is used for monitoring
            System.out.println ("\nCurrent statistic set: " + ac.invoke(perfOName, "getStatisticSet", null, null));
    

            // get all statistics from the server using Perf MBean
            System.out.println ("\nGet all statistics in PMI tree");
            signature = new String[]{"[Lcom.ibm.websphere.pmi.stat.StatDescriptor;","java.lang.Boolean"};
            params = new Object[] {new StatDescriptor[]{new StatDescriptor(null)}, new Boolean(true)};
    
            com.ibm.websphere.pmi.stat.WSStats[] wsStats = (com.ibm.websphere.pmi.stat.WSStats[])
            ac.invoke(perfOName, "getStatsArray", params, signature);   
            System.out.println (wsStats[0].toString());


            // get statistics from one JVM MBean using J2EE JMX
            System.out.println ("\nGet JVM statistics using JVM MBean");
            javax.management.j2ee.statistics.Stats j2eeStats = (javax.management.j2ee.statistics.Stats) 
            ac.getAttribute(jvmOName, "stats");
            System.out.println (j2eeStats.toString());


            // get statistics from a specific thread pool -- WebContainer thread pool
            System.out.println ("\nGet statistics for a specific thread pool");
            signature = new String[]{"[Lcom.ibm.websphere.pmi.stat.StatDescriptor;","java.lang.Boolean"};

            StatDescriptor webContainerPoolSD = new StatDescriptor (new String[] {WSThreadPoolStats.NAME, 
          "WebContainer"});
            params = new Object[] {new StatDescriptor[]{webContainerPoolSD}, new Boolean(true)};
    
            wsStats = (com.ibm.websphere.pmi.stat.WSStats[])
            ac.invoke(perfOName, "getStatsArray", params, signature);   
            System.out.println (wsStats[0].toString());


            // set monitoring to statistic set "extended"
            System.out.println ("\nSet monitoring to statistic set 'Extended'");
            signature = new String[]{"java.lang.String"};
            params = new Object[] {StatConstants.STATISTIC_SET_EXTENDED};
    
            ac.invoke(perfOName, "setStatisticSet", params, signature);   
            
            // get current statistic set that is used for monitoring
            System.out.println ("\nCurrent statistic set: "+ ac.invoke(perfOName, "getStatisticSet", null, null));

            
            // selectively enable statistics for all thread pools
            System.out.println ("\nSelectively enable statistics (ActiveCount and PoolSize statistics) 
           for thread pool -- fine grained control");

            StatDescriptor threadPoolSD = new StatDescriptor (new String[]
      {WSThreadPoolStats.NAME});    
                // create a spec object to enable ActiveCount and PoolSize on the thread pool
            StatLevelSpec[] spec = new StatLevelSpec[1];
            spec[0] = new StatLevelSpec (threadPoolSD.getPath(), new int[] 
      {WSThreadPoolStats.ActiveCount, WSThreadPoolStats.PoolSize});
            
            signature = new String[]{"[Lcom.ibm.websphere.pmi.stat.StatLevelSpec;","java.lang.Boolean"};
            params = new Object[] {spec, new Boolean(true)};                
               
            ac.invoke(perfOName, "setInstrumentationLevel", params, signature);


            // get current statistic set that is used for monitoring
            System.out.println ("\nCurrent statistic set: "+ ac.invoke(perfOName, "getStatisticSet", null, null));

            // get statistics from all thread pools
            System.out.println ("\nGet statistics from all thread pools");
            signature = new String[]{"[Lcom.ibm.websphere.pmi.stat.StatDescriptor;","java.lang.Boolean"};
            params = new Object[] {new StatDescriptor[]{threadPoolSD},new Boolean(true)};
    
            wsStats = (com.ibm.websphere.pmi.stat.WSStats[])
            ac.invoke(perfOName, "getStatsArray", params, signature);   
            System.out.println (wsStats[0].toString());

        }
        catch (Exception e)
        {
            e.printStackTrace();
        }

        // set the property to original value
        System.setProperty ("websphereV5Statistics", v5PropFlag);
    }
        
    /**
     * Some sample code to set level, get data, and display data. (V5)
     * @deprecated Use 6.0 APIs.
     */
    public void doTest() 
    {
        try 
        {
            // first get all the configs  - used to set static info for Stats 
            //

server only returns the value and time info. // No description, unit, etc is returned with PMI data to reduce communication cost. // You have to call setConfig to bind the static info and Stats data later. configs = (PmiModuleConfig[])ac.invoke(perfOName, "getConfigs", null, null); // print out all the PMI modules and matching mbean types for (int i=0; i<configs.length; i++) System.out.println("config: moduleName=" + configs[i].getShortName() + ", mbeanType=" + configs[i].getMbeanType()); // set the instrumentation level for the server setInstrumentationLevel(serverOName, null, PmiConstants.LEVEL_HIGH); // example to use StatDescriptor. // Note WLM module is only available in ND. StatDescriptor sd = new StatDescriptor(new String[] {"wlmModule.server"}); setInstrumentationLevel(wlmOName, sd, PmiConstants.LEVEL_HIGH); // example to getInstrumentationLevel MBeanLevelSpec[] mlss = getInstrumentationLevel(wlmOName, sd, true); // you can call getLevel(), getObjectName(), getStatDescriptor() on mlss[i] // get data for the server Stats stats = getStatsObject(serverOName, true); System.out.println(stats.toString()); // get data for WLM server submodule stats = getStatsObject(wlmOName, sd, true); if (stats == null) System.out.println("Cannot get Stats for WLM data"); else System.out.println(stats.toString()); // get data for JVM MBean stats = getStatsObject(jvmOName, true); processStats(stats); // get data for multiple MBeans ObjectName[] onames = new ObjectName[]{orbtpOName, jvmOName}; Object[] params = new Object[]{onames, new Boolean(true)}; String[] signature = new String[]{"[Ljavax.management.ObjectName;", "java.lang.Boolean"}; Stats[] statsArray = (Stats[])ac.invoke(perfOName, "getStatsArray", params, signature); // you can call toString or processStats on statsArray[i] if (!failed) System.out.println("All tests passed"); else System.out.println("Some tests failed"); } catch(Exception ex) { new AdminException(ex).printStackTrace(); ex.printStackTrace(); } } /** * Sample code to get level */ protected MBeanLevelSpec[] getInstrumentationLevel(ObjectName on, StatDescriptor sd, boolean recursive) { if (sd == null) return getInstrumentationLevel(on, recursive); System.out.println("\ntest getInstrumentationLevel\n"); try { Object[] params = new Object[2]; params[0] = new MBeanStatDescriptor(on, sd); params[1] = new Boolean(recursive); String[] signature= new String[]{ "com.ibm.websphere.pmi.stat.MBeanStatDescriptor", "java.lang.Boolean"}; MBeanLevelSpec[] mlss = (MBeanLevelSpec[])ac.invoke(perfOName, "getInstrumentationLevel", params, signature); return mlss; } catch(Exception e) { new AdminException(e).printStackTrace(); System.out.println("getInstrumentationLevel: Exception Thrown"); return null; } } /** * Sample code to get level */ protected MBeanLevelSpec[] getInstrumentationLevel(ObjectName on, boolean recursive) { if (on == null) return null; System.out.println("\ntest getInstrumentationLevel\n"); try { Object[] params = new Object[]{on, new Boolean(recursive)}; String[] signature= new String[]{ "javax.management.ObjectName", "java.lang.Boolean"}; MBeanLevelSpec[] mlss = (MBeanLevelSpec[])ac.invoke(perfOName, "getInstrumentationLevel", params, signature); return mlss; } catch(Exception e) { new AdminException(e).printStackTrace(); failed = true; System.out.println("getInstrumentationLevel: Exception Thrown"); return null; } } /** * Sample code to set level * @deprecated Use 6.0 APIs. */ protected void setInstrumentationLevel(ObjectName on, StatDescriptor sd, int level) { System.out.println("\ntest setInstrumentationLevel\n"); try { Object[] params = new Object[2]; String[] signature = null; MBeanLevelSpec[] mlss = null; params[0] = new MBeanLevelSpec(on, sd, level); params[1] = new Boolean(true); signature= new String[]{ "com.ibm.websphere.pmi.stat.MBeanLevelSpec","java.lang.Boolean"}; ac.invoke(perfOName, "setInstrumentationLevel", params, signature); } catch(Exception e) { failed = true; new AdminException(e).printStackTrace(); System.out.println("setInstrumentationLevel: FAILED: Exception Thrown"); } } /** * Sample code to get a Stats object * @deprecated Use 6.0 APIs. */ public Stats getStatsObject(ObjectName on, StatDescriptor sd, boolean recursive) { if (sd == null) return getStatsObject(on, recursive); System.out.println("\ntest getStatsObject\n"); try { Object[] params = new Object[2]; params[0] = new MBeanStatDescriptor(on, sd); // construct MBeanStatDescriptor params[1] = new Boolean(recursive); String[] signature = new String[] { "com.ibm.websphere.pmi.stat.MBeanStatDescriptor", "java.lang.Boolean"}; Stats stats = (Stats)ac.invoke(perfOName, "getStatsObject", params, signature); if (stats == null) return null; // find the PmiModuleConfig and bind it with the data String type = on.getKeyProperty("type"); if (type.equals(MBeanTypeList.SERVER_MBEAN)) setServerConfig(stats); else stats.setConfig(PmiClient.findConfig(configs, on)); return stats; } catch(Exception e) { failed = true; new AdminException(e).printStackTrace(); System.out.println("getStatsObject: Exception Thrown"); return null; } } /** * Sample code to get a Stats object */ public Stats getStatsObject(ObjectName on, boolean recursive) { if (on == null) return null; System.out.println("\ntest getStatsObject\n"); try { Object[] params = new Object[]{on, new Boolean(recursive)}; String[] signature = new String[] { "javax.management.ObjectName", "java.lang.Boolean"}; Stats stats = (Stats)ac.invoke(perfOName, "getStatsObject", params, signature); // find the PmiModuleConfig and bind it with the data String type = on.getKeyProperty("type"); if (type.equals(MBeanTypeList.SERVER_MBEAN)) setServerConfig(stats); else stats.setConfig(PmiClient.findConfig(configs, on)); return stats; } catch(Exception e) { failed = true; new AdminException(e).printStackTrace(); System.out.println("getStatsObject: Exception Thrown"); return null; } } /** * Sample code to navigate and get the data value from the Stats object. */ private void processStats(Stats stat) { processStats(stat, ""); } /** * Sample code to navigate and get the data value from the Stats and Statistic object. * @deprecated Use 6.0 APIs. */ private void processStats(Stats stat, String indent) { if(stat == null) return; System.out.println("\n\n"); // get name of the Stats String name = stat.getName(); System.out.println(indent + "stats name=" + name); // list data names String[] dataNames = stat.getStatisticNames(); for (int i=0; i<dataNames.length; i++) System.out.println(indent + " " + "data name=" + dataNames[i]); System.out.println(""); // list all datas //com.ibm.websphere.management.statistics.Statistic[] allData = stat.getStatistics(); // cast it to be PMI's Statistic type so that we can have get more // Also show how to do translation. //Statistic[] dataMembers = (Statistic[])allData; Statistic[] dataMembers = stat.listStatistics(); if(dataMembers != null) { for(int i=0; i<dataMembers.length; i++) { System.out.print(indent + " " + "data name=" + PmiClient.getNLSValue(dataMembers[i].getName()) + ", description=" + PmiClient.getNLSValue (dataMembers[i].getDescription()) + ", startTime=" + dataMembers[i].getStartTime() + ", lastSampleTime=" + dataMembers[i].getLastSampleTime()); if(dataMembers[i].getDataInfo().getType() == TYPE_LONG) { System.out.println(", count=" + ((CountStatisticImpl)dataMembers[i]).getCount()); } else if(dataMembers[i].getDataInfo().getType() == TYPE_STAT) { TimeStatisticImpl data = (TimeStatisticImpl)dataMembers[i]; System.out.println(", count=" + data.getCount() + ", total=" + data.getTotal() + ", mean=" + data.getMean() + ", min=" + data.getMin() + ", max=" + data.getMax()); } else if(dataMembers[i].getDataInfo().getType() == TYPE_LOAD) { RangeStatisticImpl data = (RangeStatisticImpl)dataMembers[i]; System.out.println(", current=" + data.getCurrent() + ", integral=" + data.getIntegral() + ", avg=" + data.getMean() + ", lowWaterMark=" + data.getLowWaterMark() + ", highWaterMark=" + data.getHighWaterMark()); } } } // recursively for sub-stats Stats[] substats = (Stats[])stat.getSubStats(); if(substats == null || substats.length == 0) return; for(int i=0; i<substats.length; i++) { processStats(substats[i], indent + " "); } } /** * The Stats object returned from server does not have static config info. You have to set it on client side. */ public void setServerConfig(Stats stats) { if(stats == null) return; if(stats.getType() != TYPE_SERVER) return; PmiModuleConfig config = null; Stats[] statList = stats.getSubStats(); if (statList == null || statList.length == 0) return; Stats oneStat = null; for(int i=0; i<statList.length; i++) { oneStat = statList[i]; if (oneStat == null) continue; config = PmiClient.findConfig(configs, oneStat.getStatsType()); //getName if(config != null) oneStat.setConfig(config); else { config = getStatsConfig (oneStat.getStatsType()); if (config != null) oneStat.setConfig(config); else System.out.println("Error: get null config for " + oneStat.getStatsType()); } } } /** * sample code to show how to get a specific MBeanStatDescriptor * @deprecated Use 6.0 APIs. */ public MBeanStatDescriptor getStatDescriptor(ObjectName oName, String name) { try { Object[] params = new Object[]{serverOName}; String[] signature= new String[]{"javax.management.ObjectName"}; MBeanStatDescriptor[] msds = (MBeanStatDescriptor[])ac.invoke (perfOName, "listStatMembers", params, signature); if (msds == null) return null; for (int i=0; i<msds.length; i++) { if (msds[i].getName().equals(name)) return msds[i]; } return null; } catch(Exception e) { new AdminException(e).printStackTrace(); System.out.println("listStatMembers: Exception Thrown"); return null; } } /** * sample code to show you how to navigate MBeanStatDescriptor via listStatMembers * @deprecated Use 6.0 APIs. */ public MBeanStatDescriptor[] listStatMembers(ObjectName mName) { if (mName == null) return null; try { Object[] params = new Object[]{mName}; String[] signature= new String[]{"javax.management.ObjectName"}; MBeanStatDescriptor[] msds = (MBeanStatDescriptor[])ac.invoke (perfOName, "listStatMembers", params, signature); if (msds == null) return null; for (int i=0; i<msds.length; i++) { MBeanStatDescriptor[] msds2 = listStatMembers(msds[i]); } return null; } catch(Exception e) { new AdminException(e).printStackTrace(); System.out.println("listStatMembers: Exception Thrown"); return null; } } /** * Sample code to get MBeanStatDescriptors * @deprecated Use 6.0 APIs. */ public MBeanStatDescriptor[] listStatMembers(MBeanStatDescriptor mName) { if (mName == null) return null; try { Object[] params = new Object[]{mName}; String[] signature= new String[]{"com.ibm.websphere.pmi.stat.MBeanStatDescriptor"}; MBeanStatDescriptor[] msds = (MBeanStatDescriptor[])ac.invoke(perfOName, "listStatMembers", params, signature); if (msds == null) return null; for (int i=0; i<msds.length; i++) { MBeanStatDescriptor[] msds2 = listStatMembers(msds[i]); // you may recursively call listStatMembers until find the one you want } return msds; } catch(Exception e) { new AdminException(e).printStackTrace(); System.out.println("listStatMembers: Exception Thrown"); return null; } } /** * sample code to get PMI data from beanModule * @deprecated Use 6.0 APIs. */ public void testEJB() { // This is the MBeanStatDescriptor for Enterprise EJB MBeanStatDescriptor beanMsd = getStatDescriptor(serverOName, PmiConstants.BEAN_MODULE); if (beanMsd == null) System.out.println("Error: cannot find beanModule"); // get the Stats for module level only since recursive is false Stats stats = getStatsObject(beanMsd.getObjectName(), beanMsd. getStatDescriptor(), false); // pass true if you wannt data from individual beans // find the avg method RT TimeStatisticImpl rt = (TimeStatisticImpl)stats.getStatistic (EJBStatsImpl.METHOD_RT); System.out.println("rt is " + rt.getMean()); try { java.lang.Thread.sleep(5000); } catch (Exception ex) { ex.printStackTrace(); } // get the Stats again Stats stats2 = getStatsObject(beanMsd.getObjectName(), beanMsd. getStatDescriptor(), false); // pass true if you wannt data from individual beans // find the avg method RT TimeStatisticImpl rt2 = (TimeStatisticImpl)stats2.getStatistic (EJBStatsImpl.METHOD_RT); System.out.println("rt2 is " + rt2.getMean()); // calculate the difference between this time and last time. TimeStatisticImpl deltaRt = (TimeStatisticImpl)rt2.delta(rt); System.out.println("deltaRt is " + rt.getMean()); } /** * Sample code to show how to call getStats on StatisticProvider MBean directly. * @deprecated Use 6.0 APIs. */ public void testJSR77Stats() { // first, find the MBean ObjectName you are interested. // Refer method getObjectNames for sample code. // assume we want to call getStats on JVM MBean to get statistics try { com.ibm.websphere.management.statistics.JVMStats stats = (com.ibm.websphere.management.statistics.JVMStats)ac. invoke(jvmOName, "getStats", null, null); System.out.println("\n get data from JVM MBean"); if (stats == null) { System.out.println("WARNING: getStats on JVM MBean returns null"); } else { // first, link with the static info if you care ((Stats)stats).setConfig(PmiClient.findConfig(configs, jvmOName)); // print out all the data if you want //System.out.println(stats.toString()); // navigate and get the data in the stats object processStats((Stats)stats); // call JSR77 methods on JVMStats to get the related data com.ibm.websphere.management.statistics.CountStatistic upTime = stats.getUpTime(); com.ibm.websphere.management.statistics.BoundedRangeStatistic heapSize = stats.getHeapSize(); if (upTime != null) System.out.println("\nJVM up time is " + upTime.getCount()); if (heapSize != null) System.out.println("\nheapSize is " + heapSize.getCurrent()); } } catch (Exception ex) { ex.printStackTrace(); new AdminException(ex).printStackTrace(); } } /** Get PmiModuleConfig from server */ public PmiModuleConfig getStatsConfig (String statsType) { try { return (PmiModuleConfig)ac.invoke(perfOName, "getConfig", new String[]{statsType}, new String[]{"java.lang.String"}); } catch(Exception e) { e.printStackTrace(); return null; } } /** * Get PmiModuleConfig based on MBean ObjectName @deprecated Use com.ibm.websphere.pmi.client.PmiClient.findConfig() */ public PmiModuleConfig findConfig(ObjectName on) { if (on == null) return null; String type = on.getKeyProperty("type"); System.out.println("findConfig: mbean type =" + type); for (int i=0; i<configs.length ; i++) { if (configs[i].getMbeanType().equals(type)) return configs[i]; } System.out.println("Error: cannot find the config"); return null; } /** * Get PmiModuleConfig based on PMI module name @deprecated Use com.ibm.websphere.pmi.client.PmiClient.findConfig() */ public PmiModuleConfig findConfig(String moduleName) { if (moduleName == null) return null; for (int i=0; i<configs.length ; i++) { if (configs[i].getShortName().equals(moduleName)) return configs[i]; } System.out.println("Error: cannot find the config"); return null; } }




 

Related tasks


Use PMI client to develop your monitoring application (deprecated)
Compiling your monitoring applications

 

Reference topic