Example usage for java.util.concurrent.locks Lock lock

List of usage examples for java.util.concurrent.locks Lock lock

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Introduction

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

Prototype

lock

Source Link

Usage

From source file:jenkins.plugins.git.GitSCMFileSystem.java

<V> V invoke(final FSFunction<V> function) throws IOException, InterruptedException {
    Lock cacheLock = AbstractGitSCMSource.getCacheLock(cacheEntry);
    cacheLock.lock();
    try {/*  w w  w .jav a  2 s  .  c  o m*/
        File cacheDir = AbstractGitSCMSource.getCacheDir(cacheEntry);
        if (cacheDir == null || !cacheDir.isDirectory()) {
            throw new IOException("Closed");
        }
        return client.withRepository(new RepositoryCallback<V>() {
            @Override
            public V invoke(Repository repository, VirtualChannel virtualChannel)
                    throws IOException, InterruptedException {
                return function.invoke(repository);
            }
        });
    } finally {
        cacheLock.unlock();
    }
}

From source file:be.fgov.kszbcss.rhq.websphere.config.CellConfiguration.java

private void discardSession(boolean destroy) {
    Lock writeLock = sessionLock.writeLock();
    writeLock.lock();
    try {//from ww w.j  ava  2  s  . c o  m
        if (session != null) {
            if (log.isDebugEnabled()) {
                log.debug("Discarding session " + session);
            }
            try {
                configService.discard(session);
            } catch (Exception ex) {
                log.warn("Unexpected exception when discarding workspace " + session, ex);
            }
            synchronized (resolverCache) {
                log.debug("Clearing resolver cache");
                resolverCache.clear();
            }
            synchronized (configObjectCache) {
                log.debug("Clearing config object cache");
                configObjectCache.clear();
            }
        }
        if (destroy) {
            destroyed = true;
        }
    } finally {
        writeLock.unlock();
    }
}

From source file:com.cip.crane.agent.sheduler.ExecuteTaskThread.java

@Override
public void run() {
    Lock lock = LockHelper.getLock(taskAttempt);
    ScheduleConf conf = null;//from  w w w  .  jav a 2  s .com
    ScheduleStatus status = null;
    try {
        lock.lock();
        conf = (ScheduleConf) cs.getConf(localIp, taskAttempt);
        status = (ScheduleStatus) cs.getStatus(localIp, taskAttempt);
        cs.addRunningJob(localIp, taskAttempt);
        status.setStatus(ScheduleStatus.EXECUTING);
        cs.updateStatus(localIp, taskAttempt, status);
    } catch (Exception e) {
        LOGGER.error(e, e);
    } finally {
        lock.unlock();
    }
    try {
        executeJob(conf, status);
    } catch (Exception e) {
        LOGGER.error(e, e);
        status.setStatus(ScheduleStatus.EXECUTE_FAILED);
        cs.removeRunningJob(localIp, taskAttempt);
    }
    try {
        lock.lock();
        cs.updateConf(localIp, taskAttempt, conf);
        ScheduleStatus thisStatus = (ScheduleStatus) cs.getStatus(localIp, taskAttempt);
        if (thisStatus.getStatus() != ScheduleStatus.DELETE_SUCCESS) {
            cs.updateStatus(localIp, taskAttempt, status);
            cs.removeRunningJob(localIp, taskAttempt);
        }
        LOGGER.debug(taskAttempt + " end execute");
    } catch (Exception e) {
        LOGGER.error(e, e);
    } finally {
        lock.unlock();
    }
}

From source file:com.mg.framework.service.DatabaseAuditServiceImpl.java

public void auditCreate(PostInsertEvent createEvent) {
    if (!isAuditActivated)
        return;//from  w w  w  . j  a v  a 2s  . c om

    try {
        Lock lock = entityAuditSetupLock.readLock();
        lock.lock();
        try {
            EntityAuditSetup auditSetup = entityAuditSetup.get(createEvent.getPersister().getEntityName());
            if (auditSetup == null || !auditSetup.isAuditCreate())
                return;
        } finally {
            lock.unlock();
        }

        String[] names = createEvent.getPersister().getPropertyNames();
        String[] stateStr = new String[names.length];
        String[] oldStateStr = new String[names.length];

        for (int i = 0; i < names.length; i++) {
            Type type = createEvent.getPersister().getPropertyType(names[i]);
            if (type.isCollectionType())
                continue;

            if (type.isEntityType()) {
                ClassMetadata metadata = createEvent.getPersister().getFactory()
                        .getClassMetadata(type.getName());
                stateStr[i] = entityPropertyToString(createEvent.getState()[i], metadata);
                oldStateStr[i] = null;
            } else {
                stateStr[i] = createEvent.getState()[i] == null ? null : createEvent.getState()[i].toString();
                oldStateStr[i] = null;
            }
        }

        sendAuditMessage(new EntityAuditEvent(createEvent.getPersister().getEntityName(),
                DatabaseAuditType.CREATE, createEvent.getId().toString(),
                createEvent.getPersister().getIdentifierPropertyName(), names, stateStr, oldStateStr));
    } catch (Exception e) {
        logger.error("audit create failed", e);
    }
}

From source file:org.apache.synapse.endpoints.algorithms.WeightedRoundRobin.java

public Endpoint getNextEndpoint(MessageContext synapseMessageContext, AlgorithmContext algorithmContext) {

    Lock readLock = lock.readLock();
    readLock.lock();
    try {/*  w w w  . j a va2  s . co m*/
        if (!isThreadLocal) {
            synchronized (this) {
                EndpointState state = endpointStates[endpointCursor];
                if (state.getCurrentWeight() == 0) {
                    // reset the current state
                    state.reset();

                    // go to the next endpoint
                    if (endpointCursor == endpointStates.length - 1) {
                        endpointCursor = 0;
                    } else {
                        ++endpointCursor;
                    }

                    state = endpointStates[endpointCursor];
                }

                // we are about to use this endpoint, so decrement its current count
                state.decrementCurrentWeight();

                // return the endpoint corresponding to the current position
                return endpoints.get(state.getEndpointPosition());
            }
        } else {
            if (threadedAlgorithm != null) {
                Algorithm algo = threadedAlgorithm.get();

                int position = algo.getNextEndpoint();

                return endpoints.get(position);
            } else {
                String msg = "Algorithm: WeightedRoundRobin algorithm not initialized properly";
                log.error(msg);
                throw new SynapseException(msg);
            }
        }
    } finally {
        readLock.unlock();
    }
}

From source file:com.mg.framework.service.DatabaseAuditServiceImpl.java

public void loadAuditSetup() {
    boolean startTran = false;
    try {/*  w w  w.  j av  a  2  s .  c  om*/
        logger.info("load audit setup");

        startTran = ServerUtils.getTransactionManager().getStatus() == Status.STATUS_NO_TRANSACTION;
        if (startTran)
            ServerUtils.getTransactionManager().begin();

        List<PersistentObject> list = OrmTemplate.getInstance()
                .findByCriteria(OrmTemplate.createCriteria("com.mg.merp.core.model.DatabaseAuditSetup"));

        Lock lock = entityAuditSetupLock.writeLock();
        lock.lock();
        try {
            if (entityAuditSetup != null)
                entityAuditSetup.clear();

            for (PersistentObject item : list) {
                String entityName = (String) item.getAttribute("AuditedEntityName");
                EntityAuditSetup auditSetup = entityAuditSetup.get(entityName);
                if (auditSetup == null)
                    entityAuditSetup.put(entityName, new EntityAuditSetup(item));
                else
                    auditSetup.setAudit(item);
            }
        } finally {
            lock.unlock();
        }

        if (startTran)
            ServerUtils.getTransactionManager().commit();
    } catch (Exception e) {
        logger.error("load audit setup failed", e);
        try {
            if (startTran)
                ServerUtils.getTransactionManager().rollback();
        } catch (Exception ee) {
            logger.error("transaction rollback failed", ee);
        }
    }
}

From source file:com.mg.framework.service.DatabaseAuditServiceImpl.java

public void auditRemove(PostDeleteEvent removeEvent) {
    if (!isAuditActivated)
        return;/*from   w  ww. j  ava 2s.c o  m*/

    try {
        Lock lock = entityAuditSetupLock.readLock();
        lock.lock();
        try {
            EntityAuditSetup auditSetup = entityAuditSetup.get(removeEvent.getPersister().getEntityName());
            if (auditSetup == null || !auditSetup.isAuditRemove())
                return;
        } finally {
            lock.unlock();
        }

        String[] names = removeEvent.getPersister().getPropertyNames();
        String[] stateStr = new String[names.length];
        String[] oldStateStr = new String[names.length];

        for (int i = 0; i < names.length; i++) {
            Type type = removeEvent.getPersister().getPropertyType(names[i]);
            if (type.isCollectionType())
                continue;

            if (type.isEntityType()) {
                ClassMetadata metadata = removeEvent.getPersister().getFactory()
                        .getClassMetadata(type.getName());
                oldStateStr[i] = entityPropertyToString(removeEvent.getDeletedState()[i], metadata);
                stateStr[i] = null;
            } else {
                oldStateStr[i] = removeEvent.getDeletedState()[i] == null ? null
                        : removeEvent.getDeletedState()[i].toString();
                stateStr[i] = null;
            }
        }

        sendAuditMessage(new EntityAuditEvent(removeEvent.getPersister().getEntityName(),
                DatabaseAuditType.REMOVE, removeEvent.getId().toString(),
                removeEvent.getPersister().getIdentifierPropertyName(), names, stateStr, oldStateStr));
    } catch (Exception e) {
        logger.error("audit create failed", e);
    }
}

From source file:com.iternox.piggate.samples.PiggateLogin.Activity_Logged.java

public void addPendingBeacons(ArrayList<PiggateBeacon> bar) {
    Lock l = rwLock.writeLock();
    l.lock();
    try {//from   w w w  . jav  a2 s.  c o  m
        this.pending.addAll(bar);
    } catch (Exception ex) {
    } finally {
        l.unlock();
    }
}

From source file:com.iternox.piggate.samples.PiggateLogin.Activity_Logged.java

public void addOffers(JSONArray bar) {

    Lock l = rwLock2.writeLock();
    l.lock();
    try {//  ww w.  j  av a2 s .co  m
        registryOffers(bar);
    } catch (Exception ex) {
    } finally {
        l.unlock();
    }
}

From source file:org.openhab.binding.neeo.internal.handler.NeeoBrainHandler.java

/**
 * Gets the {@link NeeoBrainApi} used by this bridge
 *
 * @return a possibly null {@link NeeoBrainApi}
 *///from   www . j  av  a 2  s  .  c o  m
@Nullable
public NeeoBrainApi getNeeoBrainApi() {
    final Lock readerLock = stateLock.readLock();
    readerLock.lock();
    try {
        return neeoBrainApi;
    } finally {
        readerLock.unlock();
    }
}