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

Introduction

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

Prototype

void unlock();

Source Link

Document

Releases the lock.

Usage

From source file:org.geotools.gce.imagemosaic.catalog.GTDataStoreGranuleCatalog.java

public void createType(String namespace, String typeName, String typeSpec) throws IOException, SchemaException {
    Utilities.ensureNonNull("typeName", typeName);
    Utilities.ensureNonNull("typeSpec", typeSpec);
    final Lock lock = rwLock.writeLock();
    String type = null;//from   w  w w .ja  va2 s. co  m
    try {
        lock.lock();
        checkStore();

        final SimpleFeatureType featureType = DataUtilities.createType(namespace, typeName, typeSpec);
        tileIndexStore.createSchema(featureType);
        type = featureType.getTypeName();
        if (typeName != null) {
            addTypeName(typeName, true);
        }
        extractBasicProperties(type);
    } finally {
        lock.unlock();
    }

}

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From source file:org.geotools.gce.imagemosaic.catalog.GTDataStoreGranuleCatalog.java

public void createType(String identification, String typeSpec) throws SchemaException, IOException {
    Utilities.ensureNonNull("typeSpec", typeSpec);
    Utilities.ensureNonNull("identification", identification);
    final Lock lock = rwLock.writeLock();
    String typeName = null;/* w  w  w  .  j  av  a  2  s .  c o  m*/
    try {
        lock.lock();
        checkStore();
        final SimpleFeatureType featureType = DataUtilities.createType(identification, typeSpec);
        tileIndexStore.createSchema(featureType);
        typeName = featureType.getTypeName();
        if (typeName != null) {
            addTypeName(typeName, true);
        }
        extractBasicProperties(typeName);
    } finally {
        lock.unlock();
    }

}

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From source file:org.geotools.gce.imagemosaic.catalog.GTDataStoreGranuleCatalog.java

public void computeAggregateFunction(Query query, FeatureCalc function) throws IOException {
    query = mergeHints(query);/* w  w w  .  j ava  2s  .  co m*/
    final Lock lock = rwLock.readLock();
    try {
        lock.lock();
        checkStore();
        SimpleFeatureSource fs = tileIndexStore.getFeatureSource(query.getTypeName());

        if (fs instanceof ContentFeatureSource)
            ((ContentFeatureSource) fs).accepts(query, function, null);
        else {
            final SimpleFeatureCollection collection = fs.getFeatures(query);
            collection.accepts(function, null);

        }
    } finally {
        lock.unlock();
    }

}

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From source file:com.funambol.pushlistener.service.taskexecutor.ScheduledTaskExecutor.java

/**
 * Schedules a new task//  w  w  w  .  j  a  v  a  2  s.  co  m
 *
 * @param task the <code>ScheduledTaskWrapper</code> to schedule
 */
public void scheduleTask(ScheduledTaskWrapper task) {
    if (task == null) {
        if (log.isTraceEnabled()) {
            log.trace("Trying to schedule a null task. Request rejected");
        }
        return;
    }
    //
    // Locking the lock for this task so no other thread can handle it avoiding
    // conflict (what happens if a thread is removing it an another threead is
    // updating it ?)
    //
    Lock handlingTaskLock = getHandlingTaskLock(task.getId());
    handlingTaskLock.lock();
    try {
        scheduleTask(task, 0);
    } finally {
        handlingTaskLock.unlock();
    }
}

---

From source file:org.pepstock.jem.gwt.server.services.StatisticsManager.java

/**
 * Returns the collection of all active samples in JEM. 
 * //  ww w  .  j av  a 2  s  .com
  * @return collection of samples
 * @throws ServiceMessageException if any exception occurs
  */
public Collection<LightSample> getSamples() throws ServiceMessageException {
    // Remember that it uses QUEUES CURRENT permission to check if
    // it can get statistics
    // checks if the user is authorized
    // if not, this method throws an exception
    try {
        checkAuthorization(new StringPermission(Permissions.ADMINISTRATION_CLUSTER_FOLDER));
    } catch (Exception e) {
        LogAppl.getInstance().ignore(e.getMessage(), e);
        try {
            checkAuthorization(new StringPermission(Permissions.ADMINISTRATION_NODES_FOLDER));
        } catch (Exception e1) {
            LogAppl.getInstance().ignore(e1.getMessage(), e1);
            checkAuthorization(new StringPermission(Permissions.ADMINISTRATION_QUEUES_FOLDER));
        }
    }
    IMap<String, LightSample> samples = getInstance().getMap(Queues.STATS_MAP);
    Lock lock = getInstance().getLock(Queues.STATS_MAP_LOCK);
    boolean isLock = false;
    List<LightSample> list = null;
    try {
        // locks all map to have a consistent collection
        // only for 10 seconds otherwise
        // throws an exception
        isLock = lock.tryLock(10, TimeUnit.SECONDS);
        if (isLock) {
            // gets data...
            list = new ArrayList<LightSample>(samples.values());
            // ... and sorts them
            Collections.sort(list, sampleComparator);
        } else {
            // timeout exception
            throw new ServiceMessageException(UserInterfaceMessage.JEMG022E, Queues.STATS_MAP_LOCK);
        }
    } catch (InterruptedException e) {
        // timeout exception
        throw new ServiceMessageException(UserInterfaceMessage.JEMG022E, e, Queues.STATS_MAP_LOCK);
    } finally {
        // unlocks always the map
        if (isLock) {
            lock.unlock();
        }
    }
    return list;
}

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From source file:com.haulmont.cuba.web.security.idp.BaseIdpSessionFilter.java

@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
        throws IOException, ServletException {
    // send static files without authentication
    HttpServletRequest httpRequest = (HttpServletRequest) request;
    if (StringUtils.startsWith(httpRequest.getRequestURI(), httpRequest.getContextPath() + "/VAADIN/")) {
        chain.doFilter(request, response);
        return;/*from w  w  w . j a v a  2  s .  c  om*/
    }

    HttpServletResponse httpResponse = (HttpServletResponse) response;
    String idpBaseURL = webIdpConfig.getIdpBaseURL();
    if (Strings.isNullOrEmpty(idpBaseURL)) {
        log.error("Application property cuba.web.idp.url is not set");
        httpResponse.setStatus(500);
        return;
    }

    if (!idpBaseURL.endsWith("/")) {
        idpBaseURL += "/";
    }

    String requestUrl = httpRequest.getRequestURL().toString();
    if (StringUtils.startsWith(requestUrl, idpBaseURL)) {
        chain.doFilter(httpRequest, response);
        return;
    }

    HttpSession session = httpRequest.getSession(true);
    Lock sessionLock = (Lock) session.getAttribute(IDP_SESSION_LOCK_ATTRIBUTE);
    if (sessionLock == null) {
        sessionCheckLock.lock();
        try {
            sessionLock = (Lock) session.getAttribute(IDP_SESSION_LOCK_ATTRIBUTE);
            if (sessionLock == null) {
                sessionLock = new ReentrantLock();
                session.setAttribute(IDP_SESSION_LOCK_ATTRIBUTE, sessionLock);
            }
        } finally {
            sessionCheckLock.unlock();
        }
    }

    IdpSession boundIdpSession;
    sessionLock.lock();

    try {
        session.getAttribute(IDP_SESSION_LOCK_ATTRIBUTE);
    } catch (IllegalStateException e) {
        // Someone might have invalidated the session between fetching the lock and acquiring it.
        sessionLock.unlock();

        log.debug("Invalidated session {}", session.getId());
        httpResponse.sendRedirect(httpRequest.getRequestURL().toString());
        return;
    }

    try {
        if ("GET".equals(httpRequest.getMethod())
                && httpRequest.getParameter(IDP_TICKET_REQUEST_PARAM) != null) {
            String idpTicket = httpRequest.getParameter(IDP_TICKET_REQUEST_PARAM);

            IdpSession idpSession;
            try {
                idpSession = getIdpSession(idpTicket);
            } catch (IdpActivationException e) {
                log.error("Unable to obtain IDP session by ticket", e);
                httpResponse.setStatus(500);
                return;
            }

            if (idpSession == null) {
                log.warn("Used old IDP ticket {}, send redirect", idpTicket);
                // used old ticket, send redirect
                httpResponse.sendRedirect(getIdpRedirectUrl());
                return;
            }

            session.invalidate();

            session = httpRequest.getSession(true);
            session.setAttribute(IDP_SESSION_LOCK_ATTRIBUTE, sessionLock);
            session.setAttribute(IDP_SESSION_ATTRIBUTE, idpSession);

            log.debug("IDP session {} obtained, redirect to application", idpSession);

            // redirect to application without parameters
            httpResponse.sendRedirect(httpRequest.getRequestURL().toString());
            return;
        }

        if (session.getAttribute(IDP_SESSION_ATTRIBUTE) == null) {
            if ("GET".equals(httpRequest.getMethod()) && !StringUtils.startsWith(httpRequest.getRequestURI(),
                    httpRequest.getContextPath() + "/PUSH")) {
                httpResponse.sendRedirect(getIdpRedirectUrl());
            }
            return;
        }

        boundIdpSession = (IdpSession) session.getAttribute(IDP_SESSION_ATTRIBUTE);
    } finally {
        sessionLock.unlock();
    }

    HttpServletRequest authenticatedRequest = new IdpServletRequestWrapper(httpRequest,
            new IdpSessionPrincipalImpl(boundIdpSession));

    chain.doFilter(authenticatedRequest, response);
}

---

From source file:com.funambol.pushlistener.service.taskexecutor.ScheduledTaskExecutor.java

/**
 * Executes the given task scheduling its execution to run after a given delay.
 * <p>Note that the task will be executed as soon as a thread
 * is available. Moreover, if the same task (or another equal task) is already
 * running, a new execution is planned with a delay of task.getPeriod()).
 * If the same task (or another equal task) is already waiting for its execution
 * this method doesn't have effect./*w w w  .j av a  2  s  .  co m*/
 * @return true if the task execution has been planned to be performed as soon as
 *         possible, false otherwise
 *         (maybe the same task or another equal task is waiting for its execution or
 *         is already running)
 * @param newTask the task to execute
 * @param delay the execution delay
 */
public boolean executeTaskWrapper(TaskWrapper newTask, long delay) {
    if (newTask == null) {
        throw new IllegalArgumentException("Task must be not null");
    }
    Lock handlingTaskLock = getHandlingTaskLock(newTask);
    handlingTaskLock.lock();
    try {
        return submitTaskWrapper(newTask, delay);
    } finally {
        handlingTaskLock.unlock();
    }

}

---

From source file:com.cloudera.oryx.als.serving.ServerRecommender.java

@Override
public float[] estimatePreferences(String userID, String... itemIDs) throws NotReadyException {

    Generation generation = getCurrentGeneration();
    LongObjectMap<float[]> X = generation.getX();

    float[] userFeatures;
    Lock xLock = generation.getXLock().readLock();
    xLock.lock();/*ww  w  .  j  a  v  a2s.  co  m*/
    try {
        userFeatures = X.get(StringLongMapping.toLong(userID));
    } finally {
        xLock.unlock();
    }
    if (userFeatures == null) {
        return new float[itemIDs.length]; // All 0.0f
    }

    LongObjectMap<float[]> Y = generation.getY();

    Lock yLock = generation.getYLock().readLock();
    yLock.lock();
    try {
        float[] result = new float[itemIDs.length];
        for (int i = 0; i < itemIDs.length; i++) {
            String itemID = itemIDs[i];
            float[] itemFeatures = Y.get(StringLongMapping.toLong(itemID));
            if (itemFeatures != null) {
                float value = (float) SimpleVectorMath.dot(itemFeatures, userFeatures);
                Preconditions.checkState(Floats.isFinite(value), "Bad estimate");
                result[i] = value;
            } // else leave value at 0.0f
        }
        return result;
    } finally {
        yLock.unlock();
    }
}

---

From source file:be.fgov.kszbcss.rhq.websphere.connector.security.TrustStoreManager.java

private KeyStore loadTrustStore() throws GeneralSecurityException, IOException {
    Lock lock = truststoreLock.readLock();
    lock.lock();//from   www. ja  v a2  s  . c  o  m
    try {
        KeyStore truststore = KeyStore.getInstance("JKS");
        if (truststoreFile.exists()) {
            if (log.isDebugEnabled()) {
                log.debug("Loading existing trust store from " + truststoreFile);
            }
            InputStream in = new FileInputStream(truststoreFile);
            try {
                truststore.load(in, new char[0]);
            } finally {
                in.close();
            }
            if (log.isDebugEnabled()) {
                log.debug("Trust store has " + truststore.size() + " existing entries");
            }
        } else {
            if (log.isDebugEnabled()) {
                log.debug("Trust store " + truststoreFile
                        + " doesn't exist yet; a new one will be created if necessary");
            }
            truststore.load(null);
        }
        return truststore;
    } finally {
        lock.unlock();
    }
}

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From source file:org.pepstock.jem.gwt.server.services.NodesManager.java

private List<NodeInfoBean> getNodesButUnknown(AbstractPredicate predicate) throws ServiceMessageException {
    IMap<String, NodeInfo> nodes = getInstance().getMap(Queues.NODES_MAP);
    List<NodeInfoBean> list = new ArrayList<NodeInfoBean>();
    Collection<NodeInfo> allNodes = null;
    boolean isLock = false;
    Lock lock = getInstance().getLock(Queues.NODES_MAP_LOCK);
    try {/*w  ww  .  ja  v a 2s  . c  o m*/
        isLock = lock.tryLock(10, TimeUnit.SECONDS);
        if (isLock) {
            // gets all nodes by predicate
            allNodes = nodes.values(predicate);
        } else {
            throw new ServiceMessageException(UserInterfaceMessage.JEMG022E, Queues.NODES_MAP);
        }
    } catch (InterruptedException e) {
        throw new ServiceMessageException(UserInterfaceMessage.JEMG022E, e, Queues.NODES_MAP);
    } finally {
        // unlocks always the map
        if (isLock) {
            lock.unlock();
        }
    }
    if (allNodes != null) {
        // gets the nodes and returns them
        // removing the nodes in UNKNOW
        // to avoid misunderstanding on UI
        for (NodeInfo node : allNodes) {
            if (!node.getStatus().equals(Status.UNKNOWN)) {
                list.add(node.getNodeInfoBean());
            }
        }
    }
    return list;
}

---

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