Example usage for java.util.concurrent.locks ReentrantLock ReentrantLock

List of usage examples for java.util.concurrent.locks ReentrantLock ReentrantLock

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Introduction

In this page you can find the example usage for java.util.concurrent.locks ReentrantLock ReentrantLock.

Prototype

public ReentrantLock()

Source Link

Document

Creates an instance of ReentrantLock .

Usage

From source file:edu.usu.sdl.openstorefront.service.ComponentServiceImpl.java

@Override
public void processComponentUpdates() {
    ReentrantLock lock = new ReentrantLock();
    lock.lock();//from w  w w .j a va 2  s  . c  om
    try {
        ComponentUpdateQueue updateQueueExample = new ComponentUpdateQueue();
        updateQueueExample.setNodeId(PropertiesManager.getNodeName());

        List<ComponentUpdateQueue> componentUpdateQueues = persistenceService
                .queryByExample(ComponentUpdateQueue.class, updateQueueExample);
        if (componentUpdateQueues.isEmpty() == false) {
            //Get the latest entries
            Map<String, ComponentUpdateQueue> componentMap = new HashMap<>();
            for (ComponentUpdateQueue updateQueue : componentUpdateQueues) {
                if (componentMap.containsKey(updateQueue.getUpdateId())) {
                    ComponentUpdateQueue existing = componentMap.get(updateQueue.getUpdateId());
                    if (existing.getUpdateDts().before(updateQueue.getUpdateDts())) {
                        componentMap.put(updateQueue.getUpdateId(), updateQueue);
                    }
                } else {
                    componentMap.put(updateQueue.getUpdateId(), updateQueue);
                }
            }

            List<Component> componentsToIndex = new ArrayList<>();
            for (ComponentUpdateQueue componentUpdate : componentMap.values()) {
                String componentId = componentUpdate.getComponentId();

                Component component = persistenceService.findById(Component.class, componentId);
                if (component != null) {
                    component.setLastActivityDts(componentUpdate.getUpdateDts());
                    persistenceService.persist(component);
                    getUserService().checkComponentWatches(component);
                    componentsToIndex.add(component);
                } else {
                    log.log(Level.FINE,
                            "Component not found to update last Activity. Component may have been removed.",
                            "Check component Id: " + componentId);
                }
            }
            getSearchService().indexComponents(componentsToIndex);

            //remove processed records
            for (ComponentUpdateQueue updateQueue : componentUpdateQueues) {
                ComponentUpdateQueue componentUpdateQueue = persistenceService
                        .findById(ComponentUpdateQueue.class, updateQueue.getUpdateId());
                if (componentUpdateQueue != null) {
                    persistenceService.delete(componentUpdateQueue);
                }
            }
        }
    } finally {
        lock.unlock();
    }

}

From source file:lcmc.gui.resources.ServiceInfo.java

/** Returns existing service manu item. */
private MyMenu getExistingServiceMenuItem(final String name, final boolean enableForNew,
        final boolean testOnly) {
    final ServiceInfo thisClass = this;
    return new MyMenu(name, new AccessMode(ConfigData.AccessType.ADMIN, false),
            new AccessMode(ConfigData.AccessType.OP, false)) {
        private static final long serialVersionUID = 1L;
        private final Lock mUpdateLock = new ReentrantLock();

        @Override/*from w  ww  .j  a v a 2  s .  com*/
        public String enablePredicate() {
            if (getBrowser().clStatusFailed()) {
                return ClusterBrowser.UNKNOWN_CLUSTER_STATUS_STRING;
            } else if (getService().isRemoved()) {
                return IS_BEING_REMOVED_STRING;
            } else if (getService().isOrphaned()) {
                return IS_ORPHANED_STRING;
            } else if (!enableForNew && getService().isNew()) {
                return IS_NEW_STRING;
            }
            if (getBrowser().getExistingServiceList(thisClass).size() == 0) {
                return "&lt;&lt;empty;&gt;&gt;";
            }
            return null;
        }

        @Override
        public void update() {
            final Thread t = new Thread(new Runnable() {
                @Override
                public void run() {
                    if (mUpdateLock.tryLock()) {
                        try {
                            updateThread();
                        } finally {
                            mUpdateLock.unlock();
                        }
                    }
                }
            });
            t.start();
        }

        private void updateThread() {
            final JCheckBox colocationWi = new JCheckBox("Colo", true);
            final JCheckBox orderWi = new JCheckBox("Order", true);
            colocationWi.setBackground(ClusterBrowser.STATUS_BACKGROUND);
            colocationWi.setPreferredSize(colocationWi.getMinimumSize());
            orderWi.setBackground(ClusterBrowser.STATUS_BACKGROUND);
            orderWi.setPreferredSize(orderWi.getMinimumSize());
            SwingUtilities.invokeLater(new Runnable() {
                @Override
                public void run() {
                    setEnabled(false);
                }
            });
            Tools.invokeAndWait(new Runnable() {
                @Override
                public void run() {
                    removeAll();
                }
            });

            final MyListModel<MyMenuItem> dlm = new MyListModel<MyMenuItem>();
            final Map<MyMenuItem, ButtonCallback> callbackHash = new HashMap<MyMenuItem, ButtonCallback>();
            final MyList<MyMenuItem> list = new MyList<MyMenuItem>(dlm, getBackground());

            final List<JDialog> popups = new ArrayList<JDialog>();
            for (final ServiceInfo asi : getBrowser().getExistingServiceList(thisClass)) {
                if (asi.isConstraintPH() && isConstraintPH()) {
                    continue;
                }
                if (asi.getCloneInfo() != null || asi.getGroupInfo() != null) {
                    /* skip services that are clones or in groups. */
                    continue;
                }
                addExistingServiceMenuItem(asi.toString(), asi, dlm, callbackHash, list, colocationWi, orderWi,
                        popups, testOnly);
                asi.addExistingGroupServiceMenuItems(thisClass, dlm, callbackHash, list, colocationWi, orderWi,
                        popups, testOnly);
            }
            final JPanel colOrdPanel = new JPanel(new FlowLayout(FlowLayout.LEFT, 0, 0));
            colOrdPanel.setBackground(ClusterBrowser.STATUS_BACKGROUND);
            colOrdPanel.add(colocationWi);
            colOrdPanel.add(orderWi);
            final MyMenu thisM = this;
            try {
                SwingUtilities.invokeAndWait(new Runnable() {
                    @Override
                    public void run() {
                        final boolean ret = Tools.getScrollingMenu(name, colOrdPanel, thisM, dlm, list,
                                thisClass, popups, callbackHash);
                        if (!ret) {
                            setEnabled(false);
                        }
                    }
                });
            } catch (final InterruptedException ix) {
                Thread.currentThread().interrupt();
            } catch (final InvocationTargetException x) {
                Tools.printStackTrace();
            }
            super.update();
        }
    };
}

From source file:lcmc.gui.resources.ServiceInfo.java

/** Adds new Service and dependence. */
private MyMenu getAddServiceMenuItem(final boolean testOnly, final String name) {
    final ServiceInfo thisClass = this;
    return new MyMenu(name, new AccessMode(ConfigData.AccessType.ADMIN, false),
            new AccessMode(ConfigData.AccessType.OP, false)) {
        private static final long serialVersionUID = 1L;
        private final Lock mUpdateLock = new ReentrantLock();

        @Override//from w w  w . j  a va  2 s . com
        public String enablePredicate() {
            if (getBrowser().clStatusFailed()) {
                return ClusterBrowser.UNKNOWN_CLUSTER_STATUS_STRING;
            } else if (getService().isRemoved()) {
                return IS_BEING_REMOVED_STRING;
            } else if (getService().isOrphaned()) {
                return IS_ORPHANED_STRING;
            } else if (getService().isNew()) {
                return IS_NEW_STRING;
            }
            return null;
        }

        @Override
        public void update() {
            final Thread t = new Thread(new Runnable() {
                @Override
                public void run() {
                    if (mUpdateLock.tryLock()) {
                        try {
                            updateThread();
                        } finally {
                            mUpdateLock.unlock();
                        }
                    }
                }
            });
            t.start();
        }

        private void updateThread() {
            SwingUtilities.invokeLater(new Runnable() {
                @Override
                public void run() {
                    setEnabled(false);
                }
            });
            Tools.invokeAndWait(new Runnable() {
                @Override
                public void run() {
                    removeAll();
                }
            });
            final Point2D pos = getPos();
            final CRMXML crmXML = getBrowser().getCRMXML();
            final ResourceAgent fsService = crmXML.getResourceAgent("Filesystem",
                    ResourceAgent.HEARTBEAT_PROVIDER, ResourceAgent.OCF_CLASS);
            final MyMenu thisMenu = this;
            if (crmXML.isLinbitDrbdPresent()) { /* just skip it, if it
                                                   is not */
                final ResourceAgent linbitDrbdService = crmXML.getHbLinbitDrbd();
                /* Linbit:DRBD */
                try {
                    SwingUtilities.invokeAndWait(new Runnable() {
                        @Override
                        public void run() {
                            addDrbdLinbitMenu(thisMenu, crmXML, pos, fsService, testOnly);
                        }
                    });
                } catch (final InterruptedException ix) {
                    Thread.currentThread().interrupt();
                } catch (final InvocationTargetException x) {
                    Tools.printStackTrace();
                }

            }
            if (crmXML.isDrbddiskPresent()) { /* just skip it,
                                                 if it is not */
                /* drbddisk */
                try {
                    SwingUtilities.invokeAndWait(new Runnable() {
                        @Override
                        public void run() {
                            addDrbddiskMenu(thisMenu, crmXML, pos, fsService, testOnly);
                        }
                    });
                } catch (final InterruptedException ix) {
                    Thread.currentThread().interrupt();
                } catch (final InvocationTargetException x) {
                    Tools.printStackTrace();
                }
            }
            final ResourceAgent ipService = crmXML.getResourceAgent("IPaddr2", ResourceAgent.HEARTBEAT_PROVIDER,
                    ResourceAgent.OCF_CLASS);
            if (ipService != null) { /* just skip it, if it is not*/
                /* ipaddr */
                try {
                    SwingUtilities.invokeAndWait(new Runnable() {
                        @Override
                        public void run() {
                            addIpMenu(thisMenu, pos, ipService, testOnly);
                        }
                    });
                } catch (final InterruptedException ix) {
                    Thread.currentThread().interrupt();
                } catch (final InvocationTargetException x) {
                    Tools.printStackTrace();
                }
            }
            if (fsService != null) { /* just skip it, if it is not*/
                /* Filesystem */
                try {
                    SwingUtilities.invokeAndWait(new Runnable() {
                        @Override
                        public void run() {
                            addFilesystemMenu(thisMenu, pos, fsService, testOnly);
                        }
                    });
                } catch (final InterruptedException ix) {
                    Thread.currentThread().interrupt();
                } catch (final InvocationTargetException x) {
                    Tools.printStackTrace();
                }
            }
            final List<JDialog> popups = new ArrayList<JDialog>();
            for (final String cl : ClusterBrowser.HB_CLASSES) {
                final List<ResourceAgent> services = getAddServiceList(cl);
                if (services.size() == 0) {
                    /* no services, don't show */
                    continue;
                }
                final JCheckBox colocationWi = new JCheckBox("Colo", true);
                final JCheckBox orderWi = new JCheckBox("Order", true);
                colocationWi.setBackground(ClusterBrowser.STATUS_BACKGROUND);
                colocationWi.setPreferredSize(colocationWi.getMinimumSize());
                orderWi.setBackground(ClusterBrowser.STATUS_BACKGROUND);
                orderWi.setPreferredSize(orderWi.getMinimumSize());
                final JPanel colOrdPanel = new JPanel(new FlowLayout(FlowLayout.LEFT, 0, 0));
                colOrdPanel.setBackground(ClusterBrowser.STATUS_BACKGROUND);
                colOrdPanel.add(colocationWi);
                colOrdPanel.add(orderWi);
                boolean mode = !AccessMode.ADVANCED;
                if (ResourceAgent.UPSTART_CLASS.equals(cl) || ResourceAgent.SYSTEMD_CLASS.equals(cl)) {
                    mode = AccessMode.ADVANCED;
                }
                if (ResourceAgent.LSB_CLASS.equals(cl)
                        && !getAddServiceList(ResourceAgent.SERVICE_CLASS).isEmpty()) {
                    mode = AccessMode.ADVANCED;
                }
                final MyMenu classItem = new MyMenu(ClusterBrowser.getClassMenu(cl),
                        new AccessMode(ConfigData.AccessType.ADMIN, mode),
                        new AccessMode(ConfigData.AccessType.OP, mode));
                final MyListModel<MyMenuItem> dlm = new MyListModel<MyMenuItem>();
                for (final ResourceAgent ra : services) {
                    try {
                        SwingUtilities.invokeAndWait(new Runnable() {
                            @Override
                            public void run() {
                                addResourceAgentMenu(ra, dlm, pos, popups, colocationWi, orderWi, testOnly);
                            }
                        });
                    } catch (final InterruptedException ix) {
                        Thread.currentThread().interrupt();
                    } catch (final InvocationTargetException x) {
                        Tools.printStackTrace();
                    }
                }
                try {
                    SwingUtilities.invokeAndWait(new Runnable() {
                        @Override
                        public void run() {
                            final boolean ret = Tools.getScrollingMenu(ClusterBrowser.getClassMenu(cl),
                                    colOrdPanel, classItem, dlm, new MyList<MyMenuItem>(dlm, getBackground()),
                                    thisClass, popups, null);
                            if (!ret) {
                                classItem.setEnabled(false);
                            }
                            thisMenu.add(classItem);
                        }
                    });
                } catch (final InterruptedException ix) {
                    Thread.currentThread().interrupt();
                } catch (final InvocationTargetException x) {
                    Tools.printStackTrace();
                }
            }
            super.update();
        }
    };
}

From source file:org.apache.hadoop.hive.metastore.HiveMetaStore.java

/**
 * @param args//from   www  .ja v a  2 s .  co  m
 */
public static void main(String[] args) throws Throwable {
    HiveConf.setLoadMetastoreConfig(true);
    final HiveConf conf = new HiveConf(HMSHandler.class);

    HiveMetastoreCli cli = new HiveMetastoreCli(conf);
    cli.parse(args);
    final boolean isCliVerbose = cli.isVerbose();
    // NOTE: It is critical to do this prior to initializing log4j, otherwise
    // any log specific settings via hiveconf will be ignored
    Properties hiveconf = cli.addHiveconfToSystemProperties();

    // If the log4j.configuration property hasn't already been explicitly set,
    // use Hive's default log4j configuration
    if (System.getProperty("log4j.configurationFile") == null) {
        // NOTE: It is critical to do this here so that log4j is reinitialized
        // before any of the other core hive classes are loaded
        try {
            LogUtils.initHiveLog4j();
        } catch (LogInitializationException e) {
            HMSHandler.LOG.warn(e.getMessage());
        }
    }
    HiveStringUtils.startupShutdownMessage(HiveMetaStore.class, args, LOG);

    try {
        String msg = "Starting hive metastore on port " + cli.port;
        HMSHandler.LOG.info(msg);
        if (cli.isVerbose()) {
            System.err.println(msg);
        }

        // set all properties specified on the command line
        for (Map.Entry<Object, Object> item : hiveconf.entrySet()) {
            conf.set((String) item.getKey(), (String) item.getValue());
        }

        // Add shutdown hook.
        ShutdownHookManager.addShutdownHook(new Runnable() {
            @Override
            public void run() {
                String shutdownMsg = "Shutting down hive metastore.";
                HMSHandler.LOG.info(shutdownMsg);
                if (isCliVerbose) {
                    System.err.println(shutdownMsg);
                }
                if (conf.getBoolVar(ConfVars.METASTORE_METRICS)) {
                    try {
                        MetricsFactory.close();
                    } catch (Exception e) {
                        LOG.error("error in Metrics deinit: " + e.getClass().getName() + " " + e.getMessage(),
                                e);
                    }
                }
            }
        });

        //Start Metrics for Standalone (Remote) Mode
        if (conf.getBoolVar(ConfVars.METASTORE_METRICS)) {
            try {
                MetricsFactory.init(conf);
            } catch (Exception e) {
                // log exception, but ignore inability to start
                LOG.error("error in Metrics init: " + e.getClass().getName() + " " + e.getMessage(), e);
            }
        }

        Lock startLock = new ReentrantLock();
        Condition startCondition = startLock.newCondition();
        AtomicBoolean startedServing = new AtomicBoolean();
        startMetaStoreThreads(conf, startLock, startCondition, startedServing);
        startMetaStore(cli.getPort(), ShimLoader.getHadoopThriftAuthBridge(), conf, startLock, startCondition,
                startedServing);
    } catch (Throwable t) {
        // Catch the exception, log it and rethrow it.
        HMSHandler.LOG.error("Metastore Thrift Server threw an exception...", t);
        throw t;
    }
}