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org.apache.activemq.broker.region.RegionBroker Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.activemq.broker.region;
import java.io.IOException;
import java.net.URI;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import javax.jms.InvalidClientIDException;
import javax.jms.JMSException;
import org.apache.activemq.broker.Broker;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.Connection;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.broker.ConsumerBrokerExchange;
import org.apache.activemq.broker.EmptyBroker;
import org.apache.activemq.broker.ProducerBrokerExchange;
import org.apache.activemq.broker.TransportConnection;
import org.apache.activemq.broker.TransportConnector;
import org.apache.activemq.broker.region.policy.DeadLetterStrategy;
import org.apache.activemq.broker.region.policy.PolicyMap;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ActiveMQMessage;
import org.apache.activemq.command.BrokerId;
import org.apache.activemq.command.BrokerInfo;
import org.apache.activemq.command.ConnectionId;
import org.apache.activemq.command.ConnectionInfo;
import org.apache.activemq.command.ConsumerControl;
import org.apache.activemq.command.ConsumerInfo;
import org.apache.activemq.command.DestinationInfo;
import org.apache.activemq.command.Message;
import org.apache.activemq.command.MessageAck;
import org.apache.activemq.command.MessageDispatch;
import org.apache.activemq.command.MessageDispatchNotification;
import org.apache.activemq.command.MessagePull;
import org.apache.activemq.command.ProducerInfo;
import org.apache.activemq.command.RemoveSubscriptionInfo;
import org.apache.activemq.command.Response;
import org.apache.activemq.command.TransactionId;
import org.apache.activemq.state.ConnectionState;
import org.apache.activemq.store.PListStore;
import org.apache.activemq.thread.Scheduler;
import org.apache.activemq.thread.TaskRunnerFactory;
import org.apache.activemq.transport.TransmitCallback;
import org.apache.activemq.usage.SystemUsage;
import org.apache.activemq.util.BrokerSupport;
import org.apache.activemq.util.IdGenerator;
import org.apache.activemq.util.InetAddressUtil;
import org.apache.activemq.util.LongSequenceGenerator;
import org.apache.activemq.util.ServiceStopper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Routes Broker operations to the correct messaging regions for processing.
*/
public class RegionBroker extends EmptyBroker {
public static final String ORIGINAL_EXPIRATION = "originalExpiration";
private static final Logger LOG = LoggerFactory.getLogger(RegionBroker.class);
private static final IdGenerator BROKER_ID_GENERATOR = new IdGenerator();
protected final DestinationStatistics destinationStatistics = new DestinationStatistics();
protected DestinationFactory destinationFactory;
protected final Map connectionStates = Collections.synchronizedMap(new HashMap());
private final Region queueRegion;
private final Region topicRegion;
private final Region tempQueueRegion;
private final Region tempTopicRegion;
protected final BrokerService brokerService;
private boolean started;
private boolean keepDurableSubsActive;
private final CopyOnWriteArrayList connections = new CopyOnWriteArrayList();
private final Map destinationGate = new HashMap();
private final Map destinations = new ConcurrentHashMap();
private final Map brokerInfos = new HashMap();
private final LongSequenceGenerator sequenceGenerator = new LongSequenceGenerator();
private BrokerId brokerId;
private String brokerName;
private final Map clientIdSet = new HashMap();
private final DestinationInterceptor destinationInterceptor;
private ConnectionContext adminConnectionContext;
private final Scheduler scheduler;
private final ThreadPoolExecutor executor;
private boolean allowTempAutoCreationOnSend;
private final ReentrantReadWriteLock inactiveDestinationsPurgeLock = new ReentrantReadWriteLock();
private final TaskRunnerFactory taskRunnerFactory;
private final AtomicBoolean purgeInactiveDestinationsTaskInProgress = new AtomicBoolean(false);
private final Runnable purgeInactiveDestinationsTask = new Runnable() {
@Override
public void run() {
if (purgeInactiveDestinationsTaskInProgress.compareAndSet(false, true)) {
taskRunnerFactory.execute(purgeInactiveDestinationsWork);
}
}
};
private final Runnable purgeInactiveDestinationsWork = new Runnable() {
@Override
public void run() {
try {
purgeInactiveDestinations();
} catch (Throwable ignored) {
LOG.error("Unexpected exception on purgeInactiveDestinations {}", this, ignored);
} finally {
purgeInactiveDestinationsTaskInProgress.set(false);
}
}
};
public RegionBroker(BrokerService brokerService, TaskRunnerFactory taskRunnerFactory, SystemUsage memoryManager, DestinationFactory destinationFactory,
DestinationInterceptor destinationInterceptor, Scheduler scheduler, ThreadPoolExecutor executor) throws IOException {
this.brokerService = brokerService;
this.executor = executor;
this.scheduler = scheduler;
if (destinationFactory == null) {
throw new IllegalArgumentException("null destinationFactory");
}
this.sequenceGenerator.setLastSequenceId(destinationFactory.getLastMessageBrokerSequenceId());
this.destinationFactory = destinationFactory;
queueRegion = createQueueRegion(memoryManager, taskRunnerFactory, destinationFactory);
topicRegion = createTopicRegion(memoryManager, taskRunnerFactory, destinationFactory);
this.destinationInterceptor = destinationInterceptor;
tempQueueRegion = createTempQueueRegion(memoryManager, taskRunnerFactory, destinationFactory);
tempTopicRegion = createTempTopicRegion(memoryManager, taskRunnerFactory, destinationFactory);
this.taskRunnerFactory = taskRunnerFactory;
}
@Override
public Map getDestinationMap() {
Map answer = new HashMap(getQueueRegion().getDestinationMap());
answer.putAll(getTopicRegion().getDestinationMap());
return answer;
}
@Override
public Map getDestinationMap(ActiveMQDestination destination) {
try {
return getRegion(destination).getDestinationMap();
} catch (JMSException jmse) {
return Collections.emptyMap();
}
}
@Override
public Set getDestinations(ActiveMQDestination destination) {
try {
return getRegion(destination).getDestinations(destination);
} catch (JMSException jmse) {
return Collections.emptySet();
}
}
public Region getQueueRegion() {
return queueRegion;
}
public Region getTempQueueRegion() {
return tempQueueRegion;
}
public Region getTempTopicRegion() {
return tempTopicRegion;
}
public Region getTopicRegion() {
return topicRegion;
}
protected Region createTempTopicRegion(SystemUsage memoryManager, TaskRunnerFactory taskRunnerFactory, DestinationFactory destinationFactory) {
return new TempTopicRegion(this, destinationStatistics, memoryManager, taskRunnerFactory, destinationFactory);
}
protected Region createTempQueueRegion(SystemUsage memoryManager, TaskRunnerFactory taskRunnerFactory, DestinationFactory destinationFactory) {
return new TempQueueRegion(this, destinationStatistics, memoryManager, taskRunnerFactory, destinationFactory);
}
protected Region createTopicRegion(SystemUsage memoryManager, TaskRunnerFactory taskRunnerFactory, DestinationFactory destinationFactory) {
return new TopicRegion(this, destinationStatistics, memoryManager, taskRunnerFactory, destinationFactory);
}
protected Region createQueueRegion(SystemUsage memoryManager, TaskRunnerFactory taskRunnerFactory, DestinationFactory destinationFactory) {
return new QueueRegion(this, destinationStatistics, memoryManager, taskRunnerFactory, destinationFactory);
}
@Override
public void start() throws Exception {
started = true;
queueRegion.start();
topicRegion.start();
tempQueueRegion.start();
tempTopicRegion.start();
int period = this.brokerService.getSchedulePeriodForDestinationPurge();
if (period > 0) {
this.scheduler.executePeriodically(purgeInactiveDestinationsTask, period);
}
}
@Override
public void stop() throws Exception {
started = false;
this.scheduler.cancel(purgeInactiveDestinationsTask);
ServiceStopper ss = new ServiceStopper();
doStop(ss);
ss.throwFirstException();
// clear the state
clientIdSet.clear();
connections.clear();
destinations.clear();
brokerInfos.clear();
}
public PolicyMap getDestinationPolicy() {
return brokerService != null ? brokerService.getDestinationPolicy() : null;
}
public ConnectionContext getConnectionContext(String clientId) {
return clientIdSet.get(clientId);
}
@Override
public void addConnection(ConnectionContext context, ConnectionInfo info) throws Exception {
String clientId = info.getClientId();
if (clientId == null) {
throw new InvalidClientIDException("No clientID specified for connection request");
}
ConnectionContext oldContext = null;
synchronized (clientIdSet) {
oldContext = clientIdSet.get(clientId);
if (oldContext != null) {
if (context.isAllowLinkStealing()) {
clientIdSet.put(clientId, context);
} else {
throw new InvalidClientIDException("Broker: " + getBrokerName() + " - Client: " + clientId + " already connected from "
+ oldContext.getConnection().getRemoteAddress());
}
} else {
clientIdSet.put(clientId, context);
}
}
if (oldContext != null) {
if (oldContext.getConnection() != null) {
Connection connection = oldContext.getConnection();
LOG.warn("Stealing link for clientId {} From Connection {}", clientId, oldContext.getConnection());
if (connection instanceof TransportConnection) {
TransportConnection transportConnection = (TransportConnection) connection;
transportConnection.stopAsync(new IOException("Stealing link for clientId " + clientId + " From Connection " + oldContext.getConnection().getConnectionId()));
} else {
connection.stop();
}
} else {
LOG.error("No Connection found for {}", oldContext);
}
}
connections.add(context.getConnection());
}
@Override
public void removeConnection(ConnectionContext context, ConnectionInfo info, Throwable error) throws Exception {
String clientId = info.getClientId();
if (clientId == null) {
throw new InvalidClientIDException("No clientID specified for connection disconnect request");
}
synchronized (clientIdSet) {
ConnectionContext oldValue = clientIdSet.get(clientId);
// we may be removing the duplicate connection, not the first connection to be created
// so lets check that their connection IDs are the same
if (oldValue == context) {
if (isEqual(oldValue.getConnectionId(), info.getConnectionId())) {
clientIdSet.remove(clientId);
}
}
}
connections.remove(context.getConnection());
}
protected boolean isEqual(ConnectionId connectionId, ConnectionId connectionId2) {
return connectionId == connectionId2 || (connectionId != null && connectionId.equals(connectionId2));
}
@Override
public Connection[] getClients() throws Exception {
ArrayList l = new ArrayList(connections);
Connection rc[] = new Connection[l.size()];
l.toArray(rc);
return rc;
}
@Override
public Destination addDestination(ConnectionContext context, ActiveMQDestination destination, boolean createIfTemp) throws Exception {
Destination answer;
answer = destinations.get(destination);
if (answer != null) {
return answer;
}
synchronized (destinationGate) {
answer = destinations.get(destination);
if (answer != null) {
return answer;
}
if (destinationGate.get(destination) != null) {
// Guard against spurious wakeup.
while (destinationGate.containsKey(destination)) {
destinationGate.wait();
}
answer = destinations.get(destination);
if (answer != null) {
return answer;
} else {
// In case of intermediate remove or add failure
destinationGate.put(destination, destination);
}
}
}
try {
boolean create = true;
if (destination.isTemporary()) {
create = createIfTemp;
}
answer = getRegion(destination).addDestination(context, destination, create);
destinations.put(destination, answer);
} finally {
synchronized (destinationGate) {
destinationGate.remove(destination);
destinationGate.notifyAll();
}
}
return answer;
}
@Override
public void removeDestination(ConnectionContext context, ActiveMQDestination destination, long timeout) throws Exception {
if (destinations.containsKey(destination)) {
getRegion(destination).removeDestination(context, destination, timeout);
destinations.remove(destination);
}
}
@Override
public void addDestinationInfo(ConnectionContext context, DestinationInfo info) throws Exception {
addDestination(context, info.getDestination(), true);
}
@Override
public void removeDestinationInfo(ConnectionContext context, DestinationInfo info) throws Exception {
removeDestination(context, info.getDestination(), info.getTimeout());
}
@Override
public ActiveMQDestination[] getDestinations() throws Exception {
ArrayList l;
l = new ArrayList(getDestinationMap().keySet());
ActiveMQDestination rc[] = new ActiveMQDestination[l.size()];
l.toArray(rc);
return rc;
}
@Override
public void addProducer(ConnectionContext context, ProducerInfo info) throws Exception {
ActiveMQDestination destination = info.getDestination();
if (destination != null) {
inactiveDestinationsPurgeLock.readLock().lock();
try {
// This seems to cause the destination to be added but without
// advisories firing...
context.getBroker().addDestination(context, destination, isAllowTempAutoCreationOnSend());
getRegion(destination).addProducer(context, info);
} finally {
inactiveDestinationsPurgeLock.readLock().unlock();
}
}
}
@Override
public void removeProducer(ConnectionContext context, ProducerInfo info) throws Exception {
ActiveMQDestination destination = info.getDestination();
if (destination != null) {
inactiveDestinationsPurgeLock.readLock().lock();
try {
getRegion(destination).removeProducer(context, info);
} finally {
inactiveDestinationsPurgeLock.readLock().unlock();
}
}
}
@Override
public Subscription addConsumer(ConnectionContext context, ConsumerInfo info) throws Exception {
ActiveMQDestination destination = info.getDestination();
if (destinationInterceptor != null) {
destinationInterceptor.create(this, context, destination);
}
inactiveDestinationsPurgeLock.readLock().lock();
try {
return getRegion(destination).addConsumer(context, info);
} finally {
inactiveDestinationsPurgeLock.readLock().unlock();
}
}
@Override
public void removeConsumer(ConnectionContext context, ConsumerInfo info) throws Exception {
ActiveMQDestination destination = info.getDestination();
inactiveDestinationsPurgeLock.readLock().lock();
try {
getRegion(destination).removeConsumer(context, info);
} finally {
inactiveDestinationsPurgeLock.readLock().unlock();
}
}
@Override
public void removeSubscription(ConnectionContext context, RemoveSubscriptionInfo info) throws Exception {
inactiveDestinationsPurgeLock.readLock().lock();
try {
topicRegion.removeSubscription(context, info);
} finally {
inactiveDestinationsPurgeLock.readLock().unlock();
}
}
@Override
public void send(ProducerBrokerExchange producerExchange, Message message) throws Exception {
ActiveMQDestination destination = message.getDestination();
message.setBrokerInTime(System.currentTimeMillis());
if (producerExchange.isMutable() || producerExchange.getRegion() == null
|| (producerExchange.getRegionDestination() != null && producerExchange.getRegionDestination().isDisposed())) {
// ensure the destination is registered with the RegionBroker
producerExchange.getConnectionContext().getBroker()
.addDestination(producerExchange.getConnectionContext(), destination, isAllowTempAutoCreationOnSend());
producerExchange.setRegion(getRegion(destination));
producerExchange.setRegionDestination(null);
}
producerExchange.getRegion().send(producerExchange, message);
// clean up so these references aren't kept (possible leak) in the producer exchange
// especially since temps are transitory
if (producerExchange.isMutable()) {
producerExchange.setRegionDestination(null);
producerExchange.setRegion(null);
}
}
@Override
public void acknowledge(ConsumerBrokerExchange consumerExchange, MessageAck ack) throws Exception {
if (consumerExchange.isWildcard() || consumerExchange.getRegion() == null) {
ActiveMQDestination destination = ack.getDestination();
consumerExchange.setRegion(getRegion(destination));
}
consumerExchange.getRegion().acknowledge(consumerExchange, ack);
}
public Region getRegion(ActiveMQDestination destination) throws JMSException {
switch (destination.getDestinationType()) {
case ActiveMQDestination.QUEUE_TYPE:
return queueRegion;
case ActiveMQDestination.TOPIC_TYPE:
return topicRegion;
case ActiveMQDestination.TEMP_QUEUE_TYPE:
return tempQueueRegion;
case ActiveMQDestination.TEMP_TOPIC_TYPE:
return tempTopicRegion;
default:
throw createUnknownDestinationTypeException(destination);
}
}
@Override
public Response messagePull(ConnectionContext context, MessagePull pull) throws Exception {
ActiveMQDestination destination = pull.getDestination();
return getRegion(destination).messagePull(context, pull);
}
@Override
public TransactionId[] getPreparedTransactions(ConnectionContext context) throws Exception {
throw new IllegalAccessException("Transaction operation not implemented by this broker.");
}
@Override
public void beginTransaction(ConnectionContext context, TransactionId xid) throws Exception {
throw new IllegalAccessException("Transaction operation not implemented by this broker.");
}
@Override
public int prepareTransaction(ConnectionContext context, TransactionId xid) throws Exception {
throw new IllegalAccessException("Transaction operation not implemented by this broker.");
}
@Override
public void rollbackTransaction(ConnectionContext context, TransactionId xid) throws Exception {
throw new IllegalAccessException("Transaction operation not implemented by this broker.");
}
@Override
public void commitTransaction(ConnectionContext context, TransactionId xid, boolean onePhase) throws Exception {
throw new IllegalAccessException("Transaction operation not implemented by this broker.");
}
@Override
public void forgetTransaction(ConnectionContext context, TransactionId transactionId) throws Exception {
throw new IllegalAccessException("Transaction operation not implemented by this broker.");
}
@Override
public void gc() {
queueRegion.gc();
topicRegion.gc();
}
@Override
public BrokerId getBrokerId() {
if (brokerId == null) {
brokerId = new BrokerId(BROKER_ID_GENERATOR.generateId());
}
return brokerId;
}
public void setBrokerId(BrokerId brokerId) {
this.brokerId = brokerId;
}
@Override
public String getBrokerName() {
if (brokerName == null) {
try {
brokerName = InetAddressUtil.getLocalHostName().toLowerCase(Locale.ENGLISH);
} catch (Exception e) {
brokerName = "localhost";
}
}
return brokerName;
}
public void setBrokerName(String brokerName) {
this.brokerName = brokerName;
}
public DestinationStatistics getDestinationStatistics() {
return destinationStatistics;
}
protected JMSException createUnknownDestinationTypeException(ActiveMQDestination destination) {
return new JMSException("Unknown destination type: " + destination.getDestinationType());
}
@Override
public synchronized void addBroker(Connection connection, BrokerInfo info) {
BrokerInfo existing = brokerInfos.get(info.getBrokerId());
if (existing == null) {
existing = info.copy();
existing.setPeerBrokerInfos(null);
brokerInfos.put(info.getBrokerId(), existing);
}
existing.incrementRefCount();
LOG.debug("{} addBroker: {} brokerInfo size: {}",
getBrokerName(), info.getBrokerName(), brokerInfos.size());
addBrokerInClusterUpdate(info);
}
@Override
public synchronized void removeBroker(Connection connection, BrokerInfo info) {
if (info != null) {
BrokerInfo existing = brokerInfos.get(info.getBrokerId());
if (existing != null && existing.decrementRefCount() == 0) {
brokerInfos.remove(info.getBrokerId());
}
LOG.debug("{} removeBroker: {} brokerInfo size: {}",
getBrokerName(), info.getBrokerName(), brokerInfos.size());
// When stopping don't send cluster updates since we are the one's tearing down
// our own bridges.
if (!brokerService.isStopping()) {
removeBrokerInClusterUpdate(info);
}
}
}
@Override
public synchronized BrokerInfo[] getPeerBrokerInfos() {
BrokerInfo[] result = new BrokerInfo[brokerInfos.size()];
result = brokerInfos.values().toArray(result);
return result;
}
@Override
public void preProcessDispatch(final MessageDispatch messageDispatch) {
final Message message = messageDispatch.getMessage();
if (message != null) {
long endTime = System.currentTimeMillis();
message.setBrokerOutTime(endTime);
if (getBrokerService().isEnableStatistics()) {
long totalTime = endTime - message.getBrokerInTime();
((Destination) message.getRegionDestination()).getDestinationStatistics().getProcessTime().addTime(totalTime);
}
if (((BaseDestination) message.getRegionDestination()).isPersistJMSRedelivered() && !message.isRedelivered()) {
final int originalValue = message.getRedeliveryCounter();
message.incrementRedeliveryCounter();
try {
if (message.isPersistent()) {
((BaseDestination) message.getRegionDestination()).getMessageStore().updateMessage(message);
}
messageDispatch.setTransmitCallback(new TransmitCallback() {
// dispatch is considered a delivery, so update sub state post dispatch otherwise
// on a disconnect/reconnect cached messages will not reflect initial delivery attempt
final TransmitCallback delegate = messageDispatch.getTransmitCallback();
@Override
public void onSuccess() {
message.incrementRedeliveryCounter();
if (delegate != null) {
delegate.onSuccess();
}
}
@Override
public void onFailure() {
if (delegate != null) {
delegate.onFailure();
}
}
});
} catch (IOException error) {
RuntimeException runtimeException = new RuntimeException("Failed to persist JMSRedeliveryFlag on " + message.getMessageId() + " in " + message.getDestination(), error);
LOG.warn(runtimeException.getLocalizedMessage(), runtimeException);
throw runtimeException;
} finally {
message.setRedeliveryCounter(originalValue);
}
}
}
}
@Override
public void postProcessDispatch(MessageDispatch messageDispatch) {
}
@Override
public void processDispatchNotification(MessageDispatchNotification messageDispatchNotification) throws Exception {
ActiveMQDestination destination = messageDispatchNotification.getDestination();
getRegion(destination).processDispatchNotification(messageDispatchNotification);
}
@Override
public boolean isStopped() {
return !started;
}
@Override
public Set getDurableDestinations() {
return destinationFactory.getDestinations();
}
protected void doStop(ServiceStopper ss) {
ss.stop(queueRegion);
ss.stop(topicRegion);
ss.stop(tempQueueRegion);
ss.stop(tempTopicRegion);
}
public boolean isKeepDurableSubsActive() {
return keepDurableSubsActive;
}
public void setKeepDurableSubsActive(boolean keepDurableSubsActive) {
this.keepDurableSubsActive = keepDurableSubsActive;
((TopicRegion) topicRegion).setKeepDurableSubsActive(keepDurableSubsActive);
}
public DestinationInterceptor getDestinationInterceptor() {
return destinationInterceptor;
}
@Override
public ConnectionContext getAdminConnectionContext() {
return adminConnectionContext;
}
@Override
public void setAdminConnectionContext(ConnectionContext adminConnectionContext) {
this.adminConnectionContext = adminConnectionContext;
}
public Map getConnectionStates() {
return connectionStates;
}
@Override
public PListStore getTempDataStore() {
return brokerService.getTempDataStore();
}
@Override
public URI getVmConnectorURI() {
return brokerService.getVmConnectorURI();
}
@Override
public void brokerServiceStarted() {
}
@Override
public BrokerService getBrokerService() {
return brokerService;
}
@Override
public boolean isExpired(MessageReference messageReference) {
return messageReference.canProcessAsExpired();
}
private boolean stampAsExpired(Message message) throws IOException {
boolean stamped = false;
if (message.getProperty(ORIGINAL_EXPIRATION) == null) {
long expiration = message.getExpiration();
message.setProperty(ORIGINAL_EXPIRATION, new Long(expiration));
stamped = true;
}
return stamped;
}
@Override
public void messageExpired(ConnectionContext context, MessageReference node, Subscription subscription) {
LOG.debug("Message expired {}", node);
getRoot().sendToDeadLetterQueue(context, node, subscription, new Throwable("Message Expired. Expiration:" + node.getExpiration()));
}
@Override
public boolean sendToDeadLetterQueue(ConnectionContext context, MessageReference node, Subscription subscription, Throwable poisonCause) {
try {
if (node != null) {
Message message = node.getMessage();
if (message != null && node.getRegionDestination() != null) {
DeadLetterStrategy deadLetterStrategy = ((Destination) node.getRegionDestination()).getDeadLetterStrategy();
if (deadLetterStrategy != null) {
if (deadLetterStrategy.isSendToDeadLetterQueue(message)) {
ActiveMQDestination deadLetterDestination = deadLetterStrategy.getDeadLetterQueueFor(message, subscription);
// Prevent a DLQ loop where same message is sent from a DLQ back to itself
if (deadLetterDestination.equals(message.getDestination())) {
LOG.debug("Not re-adding to DLQ: {}, dest: {}", message.getMessageId(), message.getDestination());
return false;
}
// message may be inflight to other subscriptions so do not modify
message = message.copy();
long dlqExpiration = deadLetterStrategy.getExpiration();
if (dlqExpiration > 0) {
dlqExpiration += System.currentTimeMillis();
} else {
stampAsExpired(message);
}
message.setExpiration(dlqExpiration);
if (!message.isPersistent()) {
message.setPersistent(true);
message.setProperty("originalDeliveryMode", "NON_PERSISTENT");
}
if (poisonCause != null) {
message.setProperty(ActiveMQMessage.DLQ_DELIVERY_FAILURE_CAUSE_PROPERTY,
poisonCause.toString());
}
// The original destination and transaction id do
// not get filled when the message is first sent,
// it is only populated if the message is routed to
// another destination like the DLQ
ConnectionContext adminContext = context;
if (context.getSecurityContext() == null || !context.getSecurityContext().isBrokerContext()) {
adminContext = BrokerSupport.getConnectionContext(this);
}
addDestination(adminContext, deadLetterDestination, false).getActiveMQDestination().setDLQ(true);
BrokerSupport.resendNoCopy(adminContext, message, deadLetterDestination);
return true;
}
} else {
LOG.debug("Dead Letter message with no DLQ strategy in place, message id: {}, destination: {}", message.getMessageId(), message.getDestination());
}
}
}
} catch (Exception e) {
LOG.warn("Caught an exception sending to DLQ: {}", node, e);
}
return false;
}
@Override
public Broker getRoot() {
try {
return getBrokerService().getBroker();
} catch (Exception e) {
LOG.error("Trying to get Root Broker", e);
throw new RuntimeException("The broker from the BrokerService should not throw an exception", e);
}
}
/**
* @return the broker sequence id
*/
@Override
public long getBrokerSequenceId() {
synchronized (sequenceGenerator) {
return sequenceGenerator.getNextSequenceId();
}
}
@Override
public Scheduler getScheduler() {
return this.scheduler;
}
@Override
public ThreadPoolExecutor getExecutor() {
return this.executor;
}
@Override
public void processConsumerControl(ConsumerBrokerExchange consumerExchange, ConsumerControl control) {
ActiveMQDestination destination = control.getDestination();
try {
getRegion(destination).processConsumerControl(consumerExchange, control);
} catch (JMSException jmse) {
LOG.warn("unmatched destination: {}, in consumerControl: {}", destination, control);
}
}
protected void addBrokerInClusterUpdate(BrokerInfo info) {
List connectors = this.brokerService.getTransportConnectors();
for (TransportConnector connector : connectors) {
if (connector.isUpdateClusterClients()) {
connector.addPeerBroker(info);
connector.updateClientClusterInfo();
}
}
}
protected void removeBrokerInClusterUpdate(BrokerInfo info) {
List connectors = this.brokerService.getTransportConnectors();
for (TransportConnector connector : connectors) {
if (connector.isUpdateClusterClients() && connector.isUpdateClusterClientsOnRemove()) {
connector.removePeerBroker(info);
connector.updateClientClusterInfo();
}
}
}
protected void purgeInactiveDestinations() {
inactiveDestinationsPurgeLock.writeLock().lock();
try {
List list = new ArrayList();
Map map = getDestinationMap();
if (isAllowTempAutoCreationOnSend()) {
map.putAll(tempQueueRegion.getDestinationMap());
map.putAll(tempTopicRegion.getDestinationMap());
}
long maxPurgedDests = this.brokerService.getMaxPurgedDestinationsPerSweep();
long timeStamp = System.currentTimeMillis();
for (Destination d : map.values()) {
d.markForGC(timeStamp);
if (d.canGC()) {
list.add(d);
if (maxPurgedDests > 0 && list.size() == maxPurgedDests) {
break;
}
}
}
if (!list.isEmpty()) {
ConnectionContext context = BrokerSupport.getConnectionContext(this);
context.setBroker(this);
for (Destination dest : list) {
Logger log = LOG;
if (dest instanceof BaseDestination) {
log = ((BaseDestination) dest).getLog();
}
log.info("{} Inactive for longer than {} ms - removing ...", dest.getName(), dest.getInactiveTimeoutBeforeGC());
try {
getRoot().removeDestination(context, dest.getActiveMQDestination(), isAllowTempAutoCreationOnSend() ? 1 : 0);
} catch (Throwable e) {
LOG.error("Failed to remove inactive destination {}", dest, e);
}
}
}
} finally {
inactiveDestinationsPurgeLock.writeLock().unlock();
}
}
public boolean isAllowTempAutoCreationOnSend() {
return allowTempAutoCreationOnSend;
}
public void setAllowTempAutoCreationOnSend(boolean allowTempAutoCreationOnSend) {
this.allowTempAutoCreationOnSend = allowTempAutoCreationOnSend;
}
@Override
public void reapplyInterceptor() {
queueRegion.reapplyInterceptor();
topicRegion.reapplyInterceptor();
tempQueueRegion.reapplyInterceptor();
tempTopicRegion.reapplyInterceptor();
}
}
