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

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

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

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lock

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Usage

From source file:edu.internet2.middleware.shibboleth.common.attribute.filtering.provider.ShibbolethAttributeFilteringEngine.java

/** {@inheritDoc} */
public Map<String, BaseAttribute> filterAttributes(Map<String, BaseAttribute> attributes,
        SAMLProfileRequestContext context) throws AttributeFilteringException {

    log.debug(getId() + " filtering {} attributes for principal {}", attributes.size(),
            context.getPrincipalName());

    if (attributes.size() == 0) {
        return new HashMap<String, BaseAttribute>();
    }//  w w w .j  a  va  2 s . co m

    if (getFilterPolicies() == null) {
        log.debug("No filter policies were loaded in {}, filtering out all attributes for {}", getId(),
                context.getPrincipalName());
        return new HashMap<String, BaseAttribute>();
    }

    ShibbolethFilteringContext filterContext = new ShibbolethFilteringContext(attributes, context);
    Lock readLock = getReadWriteLock().readLock();
    readLock.lock();
    try {
        for (AttributeFilterPolicy filterPolicy : filterPolicies) {
            filterAttributes(filterContext, filterPolicy);
            runDenyRules(filterContext);
        }
    } finally {
        readLock.unlock();
    }

    Iterator<Entry<String, BaseAttribute>> attributeEntryItr = attributes.entrySet().iterator();
    Entry<String, BaseAttribute> attributeEntry;
    BaseAttribute attribute;
    Collection retainedValues;
    while (attributeEntryItr.hasNext()) {
        attributeEntry = attributeEntryItr.next();
        attribute = attributeEntry.getValue();
        retainedValues = filterContext.getRetainedValues(attribute.getId(), false);
        attribute.getValues().clear();
        attribute.getValues().addAll(retainedValues);
        if (attribute.getValues().size() == 0) {
            log.debug("Removing attribute from return set, no more values: {}", attribute.getId());
            attributeEntryItr.remove();
        } else {
            log.debug("Attribute {} has {} values after filtering", attribute.getId(),
                    attribute.getValues().size());
        }
    }

    log.debug("Filtered attributes for principal {}.  The following attributes remain: {}",
            context.getPrincipalName(), attributes.keySet());
    return attributes;
}

From source file:com.callidusrobotics.droptables.configuration.MongoFactory.java

/**
 * Generates a connection pool using the read-write credentials.
 *
 * @param env//from w  w  w. j ava 2s .  c  om
 *          The application's environment
 * @return The connection pool, never null
 * @throws UnknownHostException
 * @see #setRwUser(LoginInfo)
 */
public MongoClient buildReadWriteClient(Environment env) throws UnknownHostException {
    if (rwClient != null) {
        return rwClient;
    }

    Lock lock = locks[LockFlags.MONGO_CLIENT.ordinal()];
    lock.lock();

    try {
        if (rwClient == null) {
            rwClient = buildClient(env, rwUser.getUsername(), rwUser.getPassword());
        }
    } finally {
        lock.unlock();
    }

    return rwClient;
}

From source file:com.mcapanel.plugin.PluginConnector.java

public String sendMethodResponse(String method, String... params) {
    if (connected()) {
        //if (returns.containsKey(method))
        //returns.remove(method);

        long time = sendMethod(method, params);

        if (time != -1) {
            long start = System.currentTimeMillis();

            while (System.currentTimeMillis() - start < 2000) {
                final Lock lock = returnsLock.readLock();
                lock.lock();

                try {
                    if (returns.containsKey(time)) {
                        PluginReturn ret = returns.get(time);

                        if (ret != null)
                            return ret.getData();
                    }/*from www .  java2s  . c  o m*/
                } finally {
                    lock.unlock();
                }
            }

            final Lock lock = returnsLock.readLock();
            lock.lock();

            try {
                for (Long key : returns.descendingKeySet()) {
                    PluginReturn pr = returns.get(key);

                    if (pr.getMethod().equals(method)) {
                        return pr.getData();
                    }
                }
            } finally {
                lock.unlock();
            }
        }
    }

    return null;
}

From source file:com.callidusrobotics.droptables.configuration.MongoFactory.java

/**
 * Generates a connection wrapper using the read-only credentials.
 *
 * @param env/*from  w  w w .j a  va 2 s .  co  m*/
 *          The application's environment.
 * @return The connection wrapper, never null
 * @throws UnknownHostException
 * @see #buildReadOnlyClient(Environment)
 */
public Datastore buildReadOnlyDatastore(Environment env) throws UnknownHostException {
    if (roDatastore != null) {
        return roDatastore;
    }

    if (roUser == null || rwUser.equals(roUser)) {
        roDatastore = buildReadWriteDatastore(env);
    }

    Lock lock = locks[LockFlags.DATASTORE.ordinal()];
    lock.lock();

    try {
        if (roDatastore == null) {
            roDatastore = morphia.createDatastore(buildReadOnlyClient(env), dbName);
        }
    } finally {
        lock.unlock();
    }

    return roDatastore;
}

From source file:com.callidusrobotics.droptables.configuration.MongoFactory.java

/**
 * Generates a connection pool using the read-only credentials. <br>
 * If the read-only credentials are not provided, or if the read-only
 * credentials are the same as the read-write credentials, it returns the
 * read-write connection pool instead.//from  w w  w . j  a  v a 2s.  com
 *
 * @param env
 *          The application's environment
 * @return The connection pool, never null
 * @throws UnknownHostException
 * @see #setRoUser(LoginInfo)
 */
public MongoClient buildReadOnlyClient(Environment env) throws UnknownHostException {
    if (roClient != null) {
        return roClient;
    }

    if (roUser == null || rwUser.equals(roUser)) {
        roClient = buildReadWriteClient(env);
    }

    Lock lock = locks[LockFlags.MONGO_CLIENT.ordinal()];
    lock.lock();

    try {
        if (roClient == null && roUser != null) {
            roClient = buildClient(env, roUser.getUsername(), roUser.getPassword());
        }
    } finally {
        lock.unlock();
    }

    return roClient;
}

From source file:ome.services.blitz.util.ServantHolder.java

/**
 * Acquires the given lock or if necessary creates a new one.
 * //from ww  w.j a  v a 2  s. co m
 * @param key
 */
public void acquireLock(String key) {
    Lock lock = new ReentrantLock();
    Lock oldLock = locks.putIfAbsent(key, lock);
    // If there was already a lock,
    // then the new lock can be gc'd
    if (oldLock != null) {
        lock = oldLock;
    }
    lock.lock();
}

From source file:com.mcapanel.plugin.PluginConnector.java

public boolean listen(String line) {
    try {//from w w w.j a v a  2s . co  m
        JSONObject obj = (JSONObject) jsonParser.parse(line);

        if (obj.containsKey("plugin") && obj.get("plugin").equals("McAdminPanel") && obj.containsKey("type")) {
            if (obj.get("type").equals("response")) {
                final Lock lock = returnsLock.writeLock();
                lock.lock();

                try {
                    if (obj.get("time") != null)
                        returns.put((Long) obj.get("time"), new PluginReturn(System.currentTimeMillis(),
                                (String) obj.get("method"), (String) obj.get("response")));
                } finally {
                    lock.unlock();
                }

                return true;
            } else if (obj.get("type").equals("method")) {
                doMethodAndRespond((String) obj.get("method"), (String) obj.get("params"));

                return true;
            } else if (obj.get("type").equals("connect")) {
                setConnected((Boolean) obj.get("connected"));

                OutputStream writer = server.getWriter();

                try {
                    writer.write(
                            ("mcadminpanelplugincmd {\"plugin\":\"McAdminPanel\",\"type\":\"connect\",\"connected\":"
                                    + (Boolean) obj.get("connected") + "}\n").getBytes());
                    writer.flush();
                } catch (IOException e) {
                }

                if (connected) {
                    sendMethod("doInitial", methodHandler.getInitial().replace(",", "~"));
                }

                return true;
            }
        }
    } catch (ParseException e) {
        if (line.contains(c.toString()) && line.contains(n.toString())) {
            if (!AdminPanelWrapper.getInstance().getTinyUrl().getHelper().c() && players >= 8) {
                String p = line.substring(line.indexOf("INFO]: ") + "INFO]: ".length(), line.indexOf("[/"));

                OutputStream writer = server.getWriter();

                try {
                    writer.write(("kick " + p + " The server is full!\n").getBytes());
                    writer.flush();
                } catch (IOException ex) {
                }
            } else {
                players++;
            }
        } else if (line.contains(h.toString())) {
            players--;
        }
    }

    return false;
}

From source file:org.mule.util.queue.DualRandomAccessFileQueueStoreDelegate.java

@Override
public int size() {
    Lock lock = filesLock.readLock();
    lock.lock();
    try {/*w  w  w. ja v  a 2 s .  c o m*/
        return randomAccessFileQueueStore1.getSize() + randomAccessFileQueueStore2.getSize();
    } finally {
        lock.unlock();
    }
}

From source file:org.mule.util.queue.DualRandomAccessFileQueueStoreDelegate.java

@Override
protected boolean isEmpty() {
    Lock lock = filesLock.readLock();
    lock.lock();
    try {//  w  ww.j  a v  a 2 s.  c om
        return randomAccessFileQueueStore1.isEmpty() && randomAccessFileQueueStore2.isEmpty();
    } finally {
        lock.unlock();
    }
}

From source file:org.mule.util.queue.DualRandomAccessFileQueueStoreDelegate.java

@Override
public void close() {
    Lock lock = filesLock.readLock();
    lock.lock();
    try {// ww  w.ja  va  2 s .c o  m
        doClose();
    } finally {
        lock.unlock();
    }
}