Examples with ServerQueueStatus org.apache.geode.internal.cache.tier.sockets.ServerQueueStatus used on opensource projects

Example 1 with ServerQueueStatus

use of org.apache.geode.internal.cache.tier.sockets.ServerQueueStatus in project geode by apache.

the class QueueManagerImpl method initializeConnections.

private void initializeConnections() {
    final boolean isDebugEnabled = logger.isDebugEnabled();
    if (isDebugEnabled) {
        logger.debug("SubscriptionManager - intitializing connections");
    }
    int queuesNeeded = redundancyLevel == -1 ? -1 : redundancyLevel + 1;
    Set excludedServers = new HashSet(blackList.getBadServers());
    List servers = findQueueServers(excludedServers, queuesNeeded, true, false, null);
    if (servers == null || servers.isEmpty()) {
        logger.warn(LocalizedStrings.QueueManagerImpl_COULD_NOT_CREATE_A_QUEUE_NO_QUEUE_SERVERS_AVAILABLE);
        scheduleRedundancySatisfierIfNeeded(redundancyRetryInterval);
        synchronized (lock) {
            queueConnections = queueConnections.setPrimaryDiscoveryFailed(null);
            lock.notifyAll();
        }
        return;
    }
    if (isDebugEnabled) {
        logger.debug("SubscriptionManager - discovered subscription servers {}", servers);
    }
    SortedMap /* <ServerQueueStatus,Connection> */
    oldQueueServers = new TreeMap(QSIZE_COMPARATOR);
    List nonRedundantServers = new ArrayList();
    for (Iterator itr = servers.iterator(); itr.hasNext(); ) {
        ServerLocation server = (ServerLocation) itr.next();
        Connection connection = null;
        try {
            connection = factory.createClientToServerConnection(server, true);
        } catch (GemFireSecurityException e) {
            throw e;
        } catch (GemFireConfigException e) {
            throw e;
        } catch (Exception e) {
            if (isDebugEnabled) {
                logger.debug("SubscriptionManager - Error connected to server: {}", server, e);
            }
        }
        if (connection != null) {
            ServerQueueStatus status = connection.getQueueStatus();
            if (status.isRedundant() || status.isPrimary()) {
                oldQueueServers.put(status, connection);
            } else {
                nonRedundantServers.add(connection);
            }
        }
    }
    // This ordering was determined from the old ConnectionProxyImpl code
    //
    // initialization order of the new redundant and primary server is
    // old redundant w/ second largest queue
    // old redundant w/ third largest queue
    // ...
    // old primary
    // non redundants in no particular order
    //
    // The primary is then chosen as
    // redundant with the largest queue
    // primary if there are no redundants
    // a non redundant
    // if the redundant with the largest queue fails, then we go and
    // make a new server a primary.
    Connection newPrimary = null;
    if (!oldQueueServers.isEmpty()) {
        newPrimary = (Connection) oldQueueServers.remove(oldQueueServers.lastKey());
    } else if (!nonRedundantServers.isEmpty()) {
        newPrimary = (Connection) nonRedundantServers.remove(0);
    }
    nonRedundantServers.addAll(0, oldQueueServers.values());
    for (Iterator itr = nonRedundantServers.iterator(); itr.hasNext(); ) {
        Connection connection = (Connection) itr.next();
        QueueConnectionImpl queueConnection = initializeQueueConnection(connection, false, null);
        if (queueConnection != null) {
            addToConnectionList(queueConnection, false);
        }
    }
    QueueConnectionImpl primaryQueue = null;
    if (newPrimary != null) {
        primaryQueue = initializeQueueConnection(newPrimary, true, null);
        if (primaryQueue == null) {
            newPrimary.destroy();
        } else {
            if (!addToConnectionList(primaryQueue, true)) {
                primaryQueue = null;
            }
        }
    }
    excludedServers.addAll(servers);
    // above.
    if (redundancyLevel != -1 && getCurrentRedundancy() < redundancyLevel) {
        if (isDebugEnabled) {
            logger.debug("SubscriptionManager - Some initial connections failed. Trying to create redundant queues");
        }
        recoverRedundancy(excludedServers, false);
    }
    if (redundancyLevel != -1 && primaryQueue == null) {
        if (isDebugEnabled) {
            logger.debug("SubscriptionManager - Intial primary creation failed. Trying to create a new primary");
        }
        while (primaryQueue == null) {
            primaryQueue = createNewPrimary(excludedServers);
            if (primaryQueue == null) {
                // couldn't find a server to make primary
                break;
            }
            if (!addToConnectionList(primaryQueue, true)) {
                excludedServers.add(primaryQueue.getServer());
                primaryQueue = null;
            }
        }
    }
    if (primaryQueue == null) {
        if (isDebugEnabled) {
            logger.debug("SubscriptionManager - Unable to create a new primary queue, using one of the redundant queues");
        }
        while (primaryQueue == null) {
            primaryQueue = promoteBackupToPrimary(queueConnections.getBackups());
            if (primaryQueue == null) {
                // no backup servers available
                break;
            }
            if (!addToConnectionList(primaryQueue, true)) {
                synchronized (lock) {
                    // make sure we don't retry this same connection.
                    queueConnections = queueConnections.removeConnection(primaryQueue);
                }
                primaryQueue = null;
            }
        }
    }
    if (primaryQueue == null) {
        logger.error(LocalizedMessage.create(LocalizedStrings.QueueManagerImpl_COULD_NOT_INITIALIZE_A_PRIMARY_QUEUE_ON_STARTUP_NO_QUEUE_SERVERS_AVAILABLE));
        synchronized (lock) {
            queueConnections = queueConnections.setPrimaryDiscoveryFailed(new NoSubscriptionServersAvailableException(LocalizedStrings.QueueManagerImpl_COULD_NOT_INITIALIZE_A_PRIMARY_QUEUE_ON_STARTUP_NO_QUEUE_SERVERS_AVAILABLE.toLocalizedString()));
            lock.notifyAll();
        }
        cqsDisconnected();
    } else {
        cqsConnected();
    }
    if (getCurrentRedundancy() < redundancyLevel) {
        logger.warn(LocalizedMessage.create(LocalizedStrings.QueueManagerImpl_UNABLE_TO_INITIALIZE_ENOUGH_REDUNDANT_QUEUES_ON_STARTUP_THE_REDUNDANCY_COUNT_IS_CURRENTLY_0, getCurrentRedundancy()));
    }
}