Examples with MBeanServer javax.management.MBeanServer used on opensource projects

Example 21 with MBeanServer

use of javax.management.MBeanServer in project jersey by jersey.

the class MBeanExposer method registerMBean.

/**
     * Register the MBean with the given postfix name.
     *
     * @param mbean MBean to be registered.
     * @param namePostfix Postfix of the object name in the pattern ",[property]=[value]...". Example
     *                    ",subType=Requests,details=Execution"
     */
void registerMBean(Object mbean, String namePostfix) {
    final MBeanServer mBeanServer = ManagementFactory.getPlatformMBeanServer();
    final String name = domain + namePostfix;
    try {
        synchronized (LOCK) {
            if (destroyed.get()) {
                // already destroyed
                return;
            }
            final ObjectName objectName = new ObjectName(name);
            if (mBeanServer.isRegistered(objectName)) {
                LOGGER.log(Level.WARNING, LocalizationMessages.WARNING_MONITORING_MBEANS_BEAN_ALREADY_REGISTERED(objectName));
                mBeanServer.unregisterMBean(objectName);
            }
            mBeanServer.registerMBean(mbean, objectName);
        }
    } catch (JMException e) {
        throw new ProcessingException(LocalizationMessages.ERROR_MONITORING_MBEANS_REGISTRATION(name), e);
    }
}

Example 22 with MBeanServer

use of javax.management.MBeanServer in project jersey by jersey.

the class MemoryLeakUtils method conditionallyInitHotSpotDiagnosticMXBean.

/**
     * Initialize the HotSpot diagnostic MBean
     */
private static void conditionallyInitHotSpotDiagnosticMXBean() throws IOException, ClassNotFoundException, NoSuchMethodException {
    if (hotSpotDiagnosticMBean == null) {
        synchronized (MemoryLeakUtils.class) {
            if (hotSpotDiagnosticMBean == null) {
                Class clazz = Class.forName(HOT_SPOT_DIAGNOSTIC_MXBEAN_CLASSNAME);
                MBeanServer server = ManagementFactory.getPlatformMBeanServer();
                hotSpotDiagnosticMBean = ManagementFactory.newPlatformMXBeanProxy(server, HOTSPOT_BEAN_NAME, clazz);
                dumpHeapMethod = clazz.getMethod("dumpHeap", String.class, boolean.class);
            }
        }
    }
}

Example 23 with MBeanServer

use of javax.management.MBeanServer in project hadoop by apache.

the class TestFairCallQueue method testFairCallQueueMXBean.

public void testFairCallQueueMXBean() throws Exception {
    MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
    ObjectName mxbeanName = new ObjectName("Hadoop:service=ns,name=FairCallQueue");
    Schedulable call = mockCall("c");
    fcq.put(call);
    int[] queueSizes = (int[]) mbs.getAttribute(mxbeanName, "QueueSizes");
    assertEquals(1, queueSizes[0]);
    assertEquals(0, queueSizes[1]);
    fcq.take();
    queueSizes = (int[]) mbs.getAttribute(mxbeanName, "QueueSizes");
    assertEquals(0, queueSizes[0]);
    assertEquals(0, queueSizes[1]);
}

Example 24 with MBeanServer

use of javax.management.MBeanServer in project hadoop by apache.

the class TestJournalNodeMXBean method testJournalNodeMXBean.

@Test
public void testJournalNodeMXBean() throws Exception {
    // we have not formatted the journals yet, and the journal status in jmx
    // should be empty since journal objects are created lazily
    MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
    ObjectName mxbeanName = new ObjectName("Hadoop:service=JournalNode,name=JournalNodeInfo");
    // getJournalsStatus
    String journalStatus = (String) mbs.getAttribute(mxbeanName, "JournalsStatus");
    assertEquals(jn.getJournalsStatus(), journalStatus);
    assertFalse(journalStatus.contains(NAMESERVICE));
    // format the journal ns1
    final NamespaceInfo FAKE_NSINFO = new NamespaceInfo(12345, "mycluster", "my-bp", 0L);
    jn.getOrCreateJournal(NAMESERVICE).format(FAKE_NSINFO);
    // check again after format
    // getJournalsStatus
    journalStatus = (String) mbs.getAttribute(mxbeanName, "JournalsStatus");
    assertEquals(jn.getJournalsStatus(), journalStatus);
    Map<String, Map<String, String>> jMap = new HashMap<String, Map<String, String>>();
    Map<String, String> infoMap = new HashMap<String, String>();
    infoMap.put("Formatted", "true");
    jMap.put(NAMESERVICE, infoMap);
    Map<String, String> infoMap1 = new HashMap<>();
    infoMap1.put("Formatted", "false");
    jMap.put(MiniJournalCluster.CLUSTER_WAITACTIVE_URI, infoMap1);
    assertEquals(JSON.toString(jMap), journalStatus);
    // restart journal node without formatting
    jCluster = new MiniJournalCluster.Builder(new Configuration()).format(false).numJournalNodes(NUM_JN).build();
    jCluster.waitActive();
    jn = jCluster.getJournalNode(0);
    // re-check 
    journalStatus = (String) mbs.getAttribute(mxbeanName, "JournalsStatus");
    assertEquals(jn.getJournalsStatus(), journalStatus);
    assertEquals(JSON.toString(jMap), journalStatus);
}

Example 25 with MBeanServer

use of javax.management.MBeanServer in project hadoop by apache.

the class TestNameNodeMXBean method testNameNodeMXBeanInfo.

@SuppressWarnings({ "unchecked" })
@Test
public void testNameNodeMXBeanInfo() throws Exception {
    Configuration conf = new Configuration();
    conf.setLong(DFSConfigKeys.DFS_DATANODE_MAX_LOCKED_MEMORY_KEY, NativeIO.POSIX.getCacheManipulator().getMemlockLimit());
    MiniDFSCluster cluster = null;
    try {
        cluster = new MiniDFSCluster.Builder(conf).numDataNodes(2).build();
        cluster.waitActive();
        // Set upgrade domain on the first DN.
        String upgradeDomain = "abcd";
        DatanodeManager dm = cluster.getNameNode().getNamesystem().getBlockManager().getDatanodeManager();
        DatanodeDescriptor dd = dm.getDatanode(cluster.getDataNodes().get(0).getDatanodeId());
        dd.setUpgradeDomain(upgradeDomain);
        String dnXferAddrWithUpgradeDomainSet = dd.getXferAddr();
        // Put the second DN to maintenance state.
        DatanodeDescriptor maintenanceNode = dm.getDatanode(cluster.getDataNodes().get(1).getDatanodeId());
        maintenanceNode.setInMaintenance();
        String dnXferAddrInMaintenance = maintenanceNode.getXferAddr();
        FSNamesystem fsn = cluster.getNameNode().namesystem;
        MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
        ObjectName mxbeanName = new ObjectName("Hadoop:service=NameNode,name=NameNodeInfo");
        // get attribute "ClusterId"
        String clusterId = (String) mbs.getAttribute(mxbeanName, "ClusterId");
        assertEquals(fsn.getClusterId(), clusterId);
        // get attribute "BlockPoolId"
        String blockpoolId = (String) mbs.getAttribute(mxbeanName, "BlockPoolId");
        assertEquals(fsn.getBlockPoolId(), blockpoolId);
        // get attribute "Version"
        String version = (String) mbs.getAttribute(mxbeanName, "Version");
        assertEquals(fsn.getVersion(), version);
        assertTrue(version.equals(VersionInfo.getVersion() + ", r" + VersionInfo.getRevision()));
        // get attribute "Used"
        Long used = (Long) mbs.getAttribute(mxbeanName, "Used");
        assertEquals(fsn.getUsed(), used.longValue());
        // get attribute "Total"
        Long total = (Long) mbs.getAttribute(mxbeanName, "Total");
        assertEquals(fsn.getTotal(), total.longValue());
        // get attribute "safemode"
        String safemode = (String) mbs.getAttribute(mxbeanName, "Safemode");
        assertEquals(fsn.getSafemode(), safemode);
        // get attribute nondfs
        Long nondfs = (Long) (mbs.getAttribute(mxbeanName, "NonDfsUsedSpace"));
        assertEquals(fsn.getNonDfsUsedSpace(), nondfs.longValue());
        // get attribute percentremaining
        Float percentremaining = (Float) (mbs.getAttribute(mxbeanName, "PercentRemaining"));
        assertEquals(fsn.getPercentRemaining(), percentremaining, DELTA);
        // get attribute Totalblocks
        Long totalblocks = (Long) (mbs.getAttribute(mxbeanName, "TotalBlocks"));
        assertEquals(fsn.getTotalBlocks(), totalblocks.longValue());
        // get attribute alivenodeinfo
        String alivenodeinfo = (String) (mbs.getAttribute(mxbeanName, "LiveNodes"));
        Map<String, Map<String, Object>> liveNodes = (Map<String, Map<String, Object>>) JSON.parse(alivenodeinfo);
        assertTrue(liveNodes.size() == 2);
        for (Map<String, Object> liveNode : liveNodes.values()) {
            assertTrue(liveNode.containsKey("nonDfsUsedSpace"));
            assertTrue(((Long) liveNode.get("nonDfsUsedSpace")) >= 0);
            assertTrue(liveNode.containsKey("capacity"));
            assertTrue(((Long) liveNode.get("capacity")) > 0);
            assertTrue(liveNode.containsKey("numBlocks"));
            assertTrue(((Long) liveNode.get("numBlocks")) == 0);
            assertTrue(liveNode.containsKey("lastBlockReport"));
            // a. By default the upgrade domain isn't defined on any DN.
            // b. If the upgrade domain is set on a DN, JMX should have the same
            // value.
            String xferAddr = (String) liveNode.get("xferaddr");
            if (!xferAddr.equals(dnXferAddrWithUpgradeDomainSet)) {
                assertTrue(!liveNode.containsKey("upgradeDomain"));
            } else {
                assertTrue(liveNode.get("upgradeDomain").equals(upgradeDomain));
            }
            // "adminState" is set to maintenance only for the specific dn.
            boolean inMaintenance = liveNode.get("adminState").equals(DatanodeInfo.AdminStates.IN_MAINTENANCE.toString());
            assertFalse(xferAddr.equals(dnXferAddrInMaintenance) ^ inMaintenance);
        }
        assertEquals(fsn.getLiveNodes(), alivenodeinfo);
        // get attributes DeadNodes
        String deadNodeInfo = (String) (mbs.getAttribute(mxbeanName, "DeadNodes"));
        assertEquals(fsn.getDeadNodes(), deadNodeInfo);
        // get attribute NodeUsage
        String nodeUsage = (String) (mbs.getAttribute(mxbeanName, "NodeUsage"));
        assertEquals("Bad value for NodeUsage", fsn.getNodeUsage(), nodeUsage);
        // get attribute NameJournalStatus
        String nameJournalStatus = (String) (mbs.getAttribute(mxbeanName, "NameJournalStatus"));
        assertEquals("Bad value for NameJournalStatus", fsn.getNameJournalStatus(), nameJournalStatus);
        // get attribute JournalTransactionInfo
        String journalTxnInfo = (String) mbs.getAttribute(mxbeanName, "JournalTransactionInfo");
        assertEquals("Bad value for NameTxnIds", fsn.getJournalTransactionInfo(), journalTxnInfo);
        // get attribute "CompileInfo"
        String compileInfo = (String) mbs.getAttribute(mxbeanName, "CompileInfo");
        assertEquals("Bad value for CompileInfo", fsn.getCompileInfo(), compileInfo);
        // get attribute CorruptFiles
        String corruptFiles = (String) (mbs.getAttribute(mxbeanName, "CorruptFiles"));
        assertEquals("Bad value for CorruptFiles", fsn.getCorruptFiles(), corruptFiles);
        // get attribute NameDirStatuses
        String nameDirStatuses = (String) (mbs.getAttribute(mxbeanName, "NameDirStatuses"));
        assertEquals(fsn.getNameDirStatuses(), nameDirStatuses);
        Map<String, Map<String, String>> statusMap = (Map<String, Map<String, String>>) JSON.parse(nameDirStatuses);
        Collection<URI> nameDirUris = cluster.getNameDirs(0);
        for (URI nameDirUri : nameDirUris) {
            File nameDir = new File(nameDirUri);
            System.out.println("Checking for the presence of " + nameDir + " in active name dirs.");
            assertTrue(statusMap.get("active").containsKey(nameDir.getAbsolutePath()));
        }
        assertEquals(2, statusMap.get("active").size());
        assertEquals(0, statusMap.get("failed").size());
        // This will cause the first dir to fail.
        File failedNameDir = new File(nameDirUris.iterator().next());
        assertEquals(0, FileUtil.chmod(new File(failedNameDir, "current").getAbsolutePath(), "000"));
        cluster.getNameNodeRpc().rollEditLog();
        nameDirStatuses = (String) (mbs.getAttribute(mxbeanName, "NameDirStatuses"));
        statusMap = (Map<String, Map<String, String>>) JSON.parse(nameDirStatuses);
        for (URI nameDirUri : nameDirUris) {
            File nameDir = new File(nameDirUri);
            String expectedStatus = nameDir.equals(failedNameDir) ? "failed" : "active";
            System.out.println("Checking for the presence of " + nameDir + " in " + expectedStatus + " name dirs.");
            assertTrue(statusMap.get(expectedStatus).containsKey(nameDir.getAbsolutePath()));
        }
        assertEquals(1, statusMap.get("active").size());
        assertEquals(1, statusMap.get("failed").size());
        assertEquals(0L, mbs.getAttribute(mxbeanName, "CacheUsed"));
        assertEquals(NativeIO.POSIX.getCacheManipulator().getMemlockLimit() * cluster.getDataNodes().size(), mbs.getAttribute(mxbeanName, "CacheCapacity"));
        assertNull("RollingUpgradeInfo should be null when there is no rolling" + " upgrade", mbs.getAttribute(mxbeanName, "RollingUpgradeStatus"));
    } finally {
        if (cluster != null) {
            for (URI dir : cluster.getNameDirs(0)) {
                FileUtil.chmod(new File(new File(dir), "current").getAbsolutePath(), "755");
            }
            cluster.shutdown();
        }
    }
}