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The ActiveMQ Message Broker implementation
/**
* 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.advisory;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import org.apache.activemq.broker.Broker;
import org.apache.activemq.broker.BrokerFilter;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.broker.ProducerBrokerExchange;
import org.apache.activemq.broker.TransportConnector;
import org.apache.activemq.broker.region.BaseDestination;
import org.apache.activemq.broker.region.Destination;
import org.apache.activemq.broker.region.DurableTopicSubscription;
import org.apache.activemq.broker.region.MessageReference;
import org.apache.activemq.broker.region.RegionBroker;
import org.apache.activemq.broker.region.Subscription;
import org.apache.activemq.broker.region.TopicRegion;
import org.apache.activemq.broker.region.TopicSubscription;
import org.apache.activemq.broker.region.virtual.VirtualDestination;
import org.apache.activemq.broker.region.virtual.VirtualTopic;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ActiveMQMessage;
import org.apache.activemq.command.ActiveMQTopic;
import org.apache.activemq.command.BrokerInfo;
import org.apache.activemq.command.Command;
import org.apache.activemq.command.ConnectionId;
import org.apache.activemq.command.ConnectionInfo;
import org.apache.activemq.command.ConsumerId;
import org.apache.activemq.command.ConsumerInfo;
import org.apache.activemq.command.DestinationInfo;
import org.apache.activemq.command.Message;
import org.apache.activemq.command.MessageId;
import org.apache.activemq.command.ProducerId;
import org.apache.activemq.command.ProducerInfo;
import org.apache.activemq.command.RemoveSubscriptionInfo;
import org.apache.activemq.command.SessionId;
import org.apache.activemq.filter.DestinationPath;
import org.apache.activemq.security.SecurityContext;
import org.apache.activemq.state.ProducerState;
import org.apache.activemq.usage.Usage;
import org.apache.activemq.util.IdGenerator;
import org.apache.activemq.util.LongSequenceGenerator;
import org.apache.activemq.util.SubscriptionKey;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This broker filter handles tracking the state of the broker for purposes of
* publishing advisory messages to advisory consumers.
*/
public class AdvisoryBroker extends BrokerFilter {
private static final Logger LOG = LoggerFactory.getLogger(AdvisoryBroker.class);
private static final IdGenerator ID_GENERATOR = new IdGenerator();
protected final ConcurrentMap connections = new ConcurrentHashMap();
private final ReentrantReadWriteLock consumersLock = new ReentrantReadWriteLock();
protected final Map consumers = new LinkedHashMap();
/**
* This is a set to track all of the virtual destinations that have been added to the broker so
* they can be easily referenced later.
*/
protected final Set virtualDestinations = Collections.newSetFromMap(new ConcurrentHashMap());
/**
* This is a map to track all consumers that exist on the virtual destination so that we can fire
* an advisory later when they go away to remove the demand.
*/
protected final ConcurrentMap virtualDestinationConsumers = new ConcurrentHashMap<>();
/**
* This is a map to track unique demand for the existence of a virtual destination so we make sure
* we don't send duplicate advisories.
*/
protected final ConcurrentMap brokerConsumerDests = new ConcurrentHashMap<>();
protected final ConcurrentMap producers = new ConcurrentHashMap();
protected final ConcurrentMap destinations = new ConcurrentHashMap();
protected final ConcurrentMap networkBridges = new ConcurrentHashMap();
protected final ProducerId advisoryProducerId = new ProducerId();
private final LongSequenceGenerator messageIdGenerator = new LongSequenceGenerator();
private VirtualDestinationMatcher virtualDestinationMatcher = new DestinationFilterVirtualDestinationMatcher();
public AdvisoryBroker(Broker next) {
super(next);
advisoryProducerId.setConnectionId(ID_GENERATOR.generateId());
}
@Override
public void addConnection(ConnectionContext context, ConnectionInfo info) throws Exception {
super.addConnection(context, info);
ActiveMQTopic topic = AdvisorySupport.getConnectionAdvisoryTopic();
// do not distribute passwords in advisory messages. usernames okay
ConnectionInfo copy = info.copy();
copy.setPassword("");
fireAdvisory(context, topic, copy);
connections.put(copy.getConnectionId(), copy);
}
@Override
public Subscription addConsumer(ConnectionContext context, ConsumerInfo info) throws Exception {
Subscription answer = super.addConsumer(context, info);
// Don't advise advisory topics.
if (!AdvisorySupport.isAdvisoryTopic(info.getDestination())) {
ActiveMQTopic topic = AdvisorySupport.getConsumerAdvisoryTopic(info.getDestination());
consumersLock.writeLock().lock();
try {
consumers.put(info.getConsumerId(), info);
//check if this is a consumer on a destination that matches a virtual destination
if (getBrokerService().isUseVirtualDestSubs()) {
for (VirtualDestination virtualDestination : virtualDestinations) {
if (virtualDestinationMatcher.matches(virtualDestination, info.getDestination())) {
fireVirtualDestinationAddAdvisory(context, info, info.getDestination(), virtualDestination);
}
}
}
} finally {
consumersLock.writeLock().unlock();
}
fireConsumerAdvisory(context, info.getDestination(), topic, info);
} else {
// We need to replay all the previously collected state objects
// for this newly added consumer.
if (AdvisorySupport.isConnectionAdvisoryTopic(info.getDestination())) {
// Replay the connections.
for (Iterator iter = connections.values().iterator(); iter.hasNext(); ) {
ConnectionInfo value = iter.next();
ActiveMQTopic topic = AdvisorySupport.getConnectionAdvisoryTopic();
fireAdvisory(context, topic, value, info.getConsumerId());
}
}
// We check here whether the Destination is Temporary Destination specific or not since we
// can avoid sending advisory messages to the consumer if it only wants Temporary Destination
// notifications. If its not just temporary destination related destinations then we have
// to send them all, a composite destination could want both.
if (AdvisorySupport.isTempDestinationAdvisoryTopic(info.getDestination())) {
// Replay the temporary destinations.
for (DestinationInfo destination : destinations.values()) {
if (destination.getDestination().isTemporary()) {
ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(destination.getDestination());
fireAdvisory(context, topic, destination, info.getConsumerId());
}
}
} else if (AdvisorySupport.isDestinationAdvisoryTopic(info.getDestination())) {
// Replay all the destinations.
for (DestinationInfo destination : destinations.values()) {
ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(destination.getDestination());
fireAdvisory(context, topic, destination, info.getConsumerId());
}
}
// Replay the producers.
if (AdvisorySupport.isProducerAdvisoryTopic(info.getDestination())) {
for (Iterator iter = producers.values().iterator(); iter.hasNext(); ) {
ProducerInfo value = iter.next();
ActiveMQTopic topic = AdvisorySupport.getProducerAdvisoryTopic(value.getDestination());
fireProducerAdvisory(context, value.getDestination(), topic, value, info.getConsumerId());
}
}
// Replay the consumers.
if (AdvisorySupport.isConsumerAdvisoryTopic(info.getDestination())) {
consumersLock.readLock().lock();
try {
for (Iterator iter = consumers.values().iterator(); iter.hasNext(); ) {
ConsumerInfo value = iter.next();
ActiveMQTopic topic = AdvisorySupport.getConsumerAdvisoryTopic(value.getDestination());
fireConsumerAdvisory(context, value.getDestination(), topic, value, info.getConsumerId());
}
} finally {
consumersLock.readLock().unlock();
}
}
// Replay the virtual destination consumers.
if (AdvisorySupport.isVirtualDestinationConsumerAdvisoryTopic(info.getDestination())) {
for (Iterator iter = virtualDestinationConsumers.keySet().iterator(); iter.hasNext(); ) {
ConsumerInfo key = iter.next();
ActiveMQTopic topic = AdvisorySupport.getVirtualDestinationConsumerAdvisoryTopic(key.getDestination());
fireConsumerAdvisory(context, key.getDestination(), topic, key, info.getConsumerId());
}
}
// Replay network bridges
if (AdvisorySupport.isNetworkBridgeAdvisoryTopic(info.getDestination())) {
for (Iterator iter = networkBridges.keySet().iterator(); iter.hasNext(); ) {
BrokerInfo key = iter.next();
ActiveMQTopic topic = AdvisorySupport.getNetworkBridgeAdvisoryTopic();
fireAdvisory(context, topic, key, null, networkBridges.get(key));
}
}
}
return answer;
}
@Override
public void addProducer(ConnectionContext context, ProducerInfo info) throws Exception {
super.addProducer(context, info);
//Verify destination is either non-null or that we want to advise anonymous producers on null destination
//Don't advise advisory topics.
if ((info.getDestination() != null || getBrokerService().isAnonymousProducerAdvisorySupport())
&& !AdvisorySupport.isAdvisoryTopic(info.getDestination())) {
ActiveMQTopic topic = AdvisorySupport.getProducerAdvisoryTopic(info.getDestination());
fireProducerAdvisory(context, info.getDestination(), topic, info);
producers.put(info.getProducerId(), info);
}
}
@Override
public Destination addDestination(ConnectionContext context, ActiveMQDestination destination, boolean create) throws Exception {
Destination answer = super.addDestination(context, destination, create);
if (!AdvisorySupport.isAdvisoryTopic(destination)) {
//for queues, create demand if isUseVirtualDestSubsOnCreation is true
if (getBrokerService().isUseVirtualDestSubsOnCreation() && destination.isQueue()) {
//check if this new destination matches a virtual destination that exists
for (VirtualDestination virtualDestination : virtualDestinations) {
if (virtualDestinationMatcher.matches(virtualDestination, destination)) {
fireVirtualDestinationAddAdvisory(context, null, destination, virtualDestination);
}
}
}
DestinationInfo info = new DestinationInfo(context.getConnectionId(), DestinationInfo.ADD_OPERATION_TYPE, destination);
DestinationInfo previous = destinations.putIfAbsent(destination, info);
if (previous == null) {
ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(destination);
fireAdvisory(context, topic, info);
}
}
return answer;
}
@Override
public void addDestinationInfo(ConnectionContext context, DestinationInfo info) throws Exception {
ActiveMQDestination destination = info.getDestination();
next.addDestinationInfo(context, info);
if (!AdvisorySupport.isAdvisoryTopic(destination)) {
DestinationInfo previous = destinations.putIfAbsent(destination, info);
if (previous == null) {
ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(destination);
fireAdvisory(context, topic, info);
}
}
}
@Override
public void removeDestination(ConnectionContext context, ActiveMQDestination destination, long timeout) throws Exception {
super.removeDestination(context, destination, timeout);
DestinationInfo info = destinations.remove(destination);
if (info != null) {
//on destination removal, remove all demand if using virtual dest subs
if (getBrokerService().isUseVirtualDestSubs()) {
for (ConsumerInfo consumerInfo : virtualDestinationConsumers.keySet()) {
//find all consumers for this virtual destination
VirtualDestination virtualDestination = virtualDestinationConsumers.get(consumerInfo);
//find a consumer that matches this virtualDest and destination
if (virtualDestinationMatcher.matches(virtualDestination, destination)) {
//in case of multiple matches
VirtualConsumerPair key = new VirtualConsumerPair(virtualDestination, destination);
ConsumerInfo i = brokerConsumerDests.get(key);
if (consumerInfo.equals(i) && brokerConsumerDests.remove(key) != null) {
LOG.debug("Virtual consumer pair removed: {} for consumer: {} ", key, i);
fireVirtualDestinationRemoveAdvisory(context, consumerInfo);
break;
}
}
}
}
// ensure we don't modify (and loose/overwrite) an in-flight add advisory, so duplicate
info = info.copy();
info.setDestination(destination);
info.setOperationType(DestinationInfo.REMOVE_OPERATION_TYPE);
ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(destination);
fireAdvisory(context, topic, info);
ActiveMQTopic[] advisoryDestinations = AdvisorySupport.getAllDestinationAdvisoryTopics(destination);
for (ActiveMQTopic advisoryDestination : advisoryDestinations) {
try {
next.removeDestination(context, advisoryDestination, -1);
} catch (Exception expectedIfDestinationDidNotExistYet) {
}
}
}
}
@Override
public void removeDestinationInfo(ConnectionContext context, DestinationInfo destInfo) throws Exception {
super.removeDestinationInfo(context, destInfo);
DestinationInfo info = destinations.remove(destInfo.getDestination());
if (info != null) {
// ensure we don't modify (and loose/overwrite) an in-flight add advisory, so duplicate
info = info.copy();
info.setDestination(destInfo.getDestination());
info.setOperationType(DestinationInfo.REMOVE_OPERATION_TYPE);
ActiveMQTopic topic = AdvisorySupport.getDestinationAdvisoryTopic(destInfo.getDestination());
fireAdvisory(context, topic, info);
ActiveMQTopic[] advisoryDestinations = AdvisorySupport.getAllDestinationAdvisoryTopics(destInfo.getDestination());
for (ActiveMQTopic advisoryDestination : advisoryDestinations) {
try {
next.removeDestination(context, advisoryDestination, -1);
} catch (Exception expectedIfDestinationDidNotExistYet) {
}
}
}
}
@Override
public void removeConnection(ConnectionContext context, ConnectionInfo info, Throwable error) throws Exception {
super.removeConnection(context, info, error);
ActiveMQTopic topic = AdvisorySupport.getConnectionAdvisoryTopic();
fireAdvisory(context, topic, info.createRemoveCommand());
connections.remove(info.getConnectionId());
}
@Override
public void removeConsumer(ConnectionContext context, ConsumerInfo info) throws Exception {
super.removeConsumer(context, info);
// Don't advise advisory topics.
ActiveMQDestination dest = info.getDestination();
if (!AdvisorySupport.isAdvisoryTopic(dest)) {
ActiveMQTopic topic = AdvisorySupport.getConsumerAdvisoryTopic(dest);
consumersLock.writeLock().lock();
try {
consumers.remove(info.getConsumerId());
//remove the demand for this consumer if it matches a virtual destination
if(getBrokerService().isUseVirtualDestSubs()) {
fireVirtualDestinationRemoveAdvisory(context, info);
}
} finally {
consumersLock.writeLock().unlock();
}
if (!dest.isTemporary() || destinations.containsKey(dest)) {
fireConsumerAdvisory(context, dest, topic, info.createRemoveCommand());
}
}
}
@Override
public void removeSubscription(ConnectionContext context, RemoveSubscriptionInfo info) throws Exception {
SubscriptionKey key = new SubscriptionKey(context.getClientId(), info.getSubscriptionName());
RegionBroker regionBroker = null;
if (next instanceof RegionBroker) {
regionBroker = (RegionBroker) next;
} else {
BrokerService service = next.getBrokerService();
regionBroker = (RegionBroker) service.getRegionBroker();
}
if (regionBroker == null) {
LOG.warn("Cannot locate a RegionBroker instance to pass along the removeSubscription call");
throw new IllegalStateException("No RegionBroker found.");
}
DurableTopicSubscription sub = ((TopicRegion) regionBroker.getTopicRegion()).getDurableSubscription(key);
super.removeSubscription(context, info);
if (sub == null) {
LOG.warn("We cannot send an advisory message for a durable sub removal when we don't know about the durable sub");
return;
}
ActiveMQDestination dest = sub.getConsumerInfo().getDestination();
// Don't advise advisory topics.
if (!AdvisorySupport.isAdvisoryTopic(dest)) {
ActiveMQTopic topic = AdvisorySupport.getConsumerAdvisoryTopic(dest);
fireConsumerAdvisory(context, dest, topic, info);
}
}
@Override
public void removeProducer(ConnectionContext context, ProducerInfo info) throws Exception {
super.removeProducer(context, info);
//Verify destination is either non-null or that we want to advise anonymous producers on null destination
//Don't advise advisory topics.
ActiveMQDestination dest = info.getDestination();
if ((dest != null || getBrokerService().isAnonymousProducerAdvisorySupport()) && !AdvisorySupport.isAdvisoryTopic(dest)) {
ActiveMQTopic topic = AdvisorySupport.getProducerAdvisoryTopic(dest);
producers.remove(info.getProducerId());
if (dest == null || !dest.isTemporary() || destinations.containsKey(dest)) {
fireProducerAdvisory(context, dest, topic, info.createRemoveCommand());
}
}
}
@Override
public void messageExpired(ConnectionContext context, MessageReference messageReference, Subscription subscription) {
super.messageExpired(context, messageReference, subscription);
try {
if (!messageReference.isAdvisory()) {
BaseDestination baseDestination = (BaseDestination) messageReference.getMessage().getRegionDestination();
ActiveMQTopic topic = AdvisorySupport.getExpiredMessageTopic(baseDestination.getActiveMQDestination());
Message payload = messageReference.getMessage().copy();
if (!baseDestination.isIncludeBodyForAdvisory()) {
payload.clearBody();
}
ActiveMQMessage advisoryMessage = new ActiveMQMessage();
advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_MESSAGE_ID, payload.getMessageId().toString());
fireAdvisory(context, topic, payload, null, advisoryMessage);
}
} catch (Exception e) {
handleFireFailure("expired", e);
}
}
@Override
public void messageConsumed(ConnectionContext context, MessageReference messageReference) {
super.messageConsumed(context, messageReference);
try {
if (!messageReference.isAdvisory()) {
BaseDestination baseDestination = (BaseDestination) messageReference.getMessage().getRegionDestination();
ActiveMQTopic topic = AdvisorySupport.getMessageConsumedAdvisoryTopic(baseDestination.getActiveMQDestination());
Message payload = messageReference.getMessage().copy();
if (!baseDestination.isIncludeBodyForAdvisory()) {
payload.clearBody();
}
ActiveMQMessage advisoryMessage = new ActiveMQMessage();
advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_MESSAGE_ID, payload.getMessageId().toString());
advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_DESTINATION, baseDestination.getActiveMQDestination().getQualifiedName());
fireAdvisory(context, topic, payload, null, advisoryMessage);
}
} catch (Exception e) {
handleFireFailure("consumed", e);
}
}
@Override
public void messageDelivered(ConnectionContext context, MessageReference messageReference) {
super.messageDelivered(context, messageReference);
try {
if (!messageReference.isAdvisory()) {
BaseDestination baseDestination = (BaseDestination) messageReference.getMessage().getRegionDestination();
ActiveMQTopic topic = AdvisorySupport.getMessageDeliveredAdvisoryTopic(baseDestination.getActiveMQDestination());
Message payload = messageReference.getMessage().copy();
if (!baseDestination.isIncludeBodyForAdvisory()) {
payload.clearBody();
}
ActiveMQMessage advisoryMessage = new ActiveMQMessage();
advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_MESSAGE_ID, payload.getMessageId().toString());
advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_DESTINATION, baseDestination.getActiveMQDestination().getQualifiedName());
fireAdvisory(context, topic, payload, null, advisoryMessage);
}
} catch (Exception e) {
handleFireFailure("delivered", e);
}
}
@Override
public void messageDiscarded(ConnectionContext context, Subscription sub, MessageReference messageReference) {
super.messageDiscarded(context, sub, messageReference);
try {
if (!messageReference.isAdvisory()) {
BaseDestination baseDestination = (BaseDestination) messageReference.getMessage().getRegionDestination();
ActiveMQTopic topic = AdvisorySupport.getMessageDiscardedAdvisoryTopic(baseDestination.getActiveMQDestination());
Message payload = messageReference.getMessage().copy();
if (!baseDestination.isIncludeBodyForAdvisory()) {
payload.clearBody();
}
ActiveMQMessage advisoryMessage = new ActiveMQMessage();
if (sub instanceof TopicSubscription) {
advisoryMessage.setIntProperty(AdvisorySupport.MSG_PROPERTY_DISCARDED_COUNT, ((TopicSubscription) sub).discarded());
}
advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_MESSAGE_ID, payload.getMessageId().toString());
advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_CONSUMER_ID, sub.getConsumerInfo().getConsumerId().toString());
advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_DESTINATION, baseDestination.getActiveMQDestination().getQualifiedName());
fireAdvisory(context, topic, payload, null, advisoryMessage);
}
} catch (Exception e) {
handleFireFailure("discarded", e);
}
}
@Override
public void slowConsumer(ConnectionContext context, Destination destination, Subscription subs) {
super.slowConsumer(context, destination, subs);
try {
if (!AdvisorySupport.isAdvisoryTopic(destination.getActiveMQDestination())) {
ActiveMQTopic topic = AdvisorySupport.getSlowConsumerAdvisoryTopic(destination.getActiveMQDestination());
ActiveMQMessage advisoryMessage = new ActiveMQMessage();
advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_CONSUMER_ID, subs.getConsumerInfo().getConsumerId().toString());
fireAdvisory(context, topic, subs.getConsumerInfo(), null, advisoryMessage);
}
} catch (Exception e) {
handleFireFailure("slow consumer", e);
}
}
@Override
public void fastProducer(ConnectionContext context, ProducerInfo producerInfo, ActiveMQDestination destination) {
super.fastProducer(context, producerInfo, destination);
try {
if (!AdvisorySupport.isAdvisoryTopic(destination)) {
ActiveMQTopic topic = AdvisorySupport.getFastProducerAdvisoryTopic(destination);
ActiveMQMessage advisoryMessage = new ActiveMQMessage();
advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_PRODUCER_ID, producerInfo.getProducerId().toString());
fireAdvisory(context, topic, producerInfo, null, advisoryMessage);
}
} catch (Exception e) {
handleFireFailure("fast producer", e);
}
}
private final IdGenerator connectionIdGenerator = new IdGenerator("advisory");
private final LongSequenceGenerator sessionIdGenerator = new LongSequenceGenerator();
private final LongSequenceGenerator consumerIdGenerator = new LongSequenceGenerator();
@Override
public void virtualDestinationAdded(ConnectionContext context,
VirtualDestination virtualDestination) {
super.virtualDestinationAdded(context, virtualDestination);
if (virtualDestinations.add(virtualDestination)) {
LOG.debug("Virtual destination added: {}", virtualDestination);
try {
// Don't advise advisory topics.
if (!AdvisorySupport.isAdvisoryTopic(virtualDestination.getVirtualDestination())) {
//create demand for consumers on virtual destinations
consumersLock.readLock().lock();
try {
//loop through existing destinations to see if any match this newly
//created virtual destination
if (getBrokerService().isUseVirtualDestSubsOnCreation()) {
//for matches that are a queue, fire an advisory for demand
for (ActiveMQDestination destination : destinations.keySet()) {
if(destination.isQueue()) {
if (virtualDestinationMatcher.matches(virtualDestination, destination)) {
fireVirtualDestinationAddAdvisory(context, null, destination, virtualDestination);
}
}
}
}
//loop through existing consumers to see if any of them are consuming on a destination
//that matches the new virtual destination
for (Iterator iter = consumers.values().iterator(); iter.hasNext(); ) {
ConsumerInfo info = iter.next();
if (virtualDestinationMatcher.matches(virtualDestination, info.getDestination())) {
fireVirtualDestinationAddAdvisory(context, info, info.getDestination(), virtualDestination);
}
}
} finally {
consumersLock.readLock().unlock();
}
}
} catch (Exception e) {
handleFireFailure("virtualDestinationAdded", e);
}
}
}
private void fireVirtualDestinationAddAdvisory(ConnectionContext context, ConsumerInfo info, ActiveMQDestination activeMQDest,
VirtualDestination virtualDestination) throws Exception {
//if no consumer info, we need to create one - this is the case when an advisory is fired
//because of the existence of a destination matching a virtual destination
if (info == null) {
//store the virtual destination and the activeMQDestination as a pair so that we can keep track
//of all matching forwarded destinations that caused demand
VirtualConsumerPair pair = new VirtualConsumerPair(virtualDestination, activeMQDest);
if (brokerConsumerDests.get(pair) == null) {
ConnectionId connectionId = new ConnectionId(connectionIdGenerator.generateId());
SessionId sessionId = new SessionId(connectionId, sessionIdGenerator.getNextSequenceId());
ConsumerId consumerId = new ConsumerId(sessionId, consumerIdGenerator.getNextSequenceId());
info = new ConsumerInfo(consumerId);
if(brokerConsumerDests.putIfAbsent(pair, info) == null) {
LOG.debug("Virtual consumer pair added: {} for consumer: {} ", pair, info);
setConsumerInfoVirtualDest(info, virtualDestination, activeMQDest);
ActiveMQTopic topic = AdvisorySupport.getVirtualDestinationConsumerAdvisoryTopic(info.getDestination());
if (virtualDestinationConsumers.putIfAbsent(info, virtualDestination) == null) {
LOG.debug("Virtual consumer added: {}, for virtual destination: {}", info, virtualDestination);
fireConsumerAdvisory(context, info.getDestination(), topic, info);
}
}
}
//this is the case of a real consumer coming online
} else {
info = info.copy();
setConsumerInfoVirtualDest(info, virtualDestination, activeMQDest);
ActiveMQTopic topic = AdvisorySupport.getVirtualDestinationConsumerAdvisoryTopic(info.getDestination());
if (virtualDestinationConsumers.putIfAbsent(info, virtualDestination) == null) {
LOG.debug("Virtual consumer added: {}, for virtual destination: {}", info, virtualDestination);
fireConsumerAdvisory(context, info.getDestination(), topic, info);
}
}
}
/**
* Sets the virtual destination on the ConsumerInfo
* If this is a VirtualTopic then the destination used will be the actual topic subscribed
* to in order to track demand properly
*
* @param info
* @param virtualDestination
* @param activeMQDest
*/
private void setConsumerInfoVirtualDest(ConsumerInfo info, VirtualDestination virtualDestination, ActiveMQDestination activeMQDest) {
info.setDestination(virtualDestination.getVirtualDestination());
if (virtualDestination instanceof VirtualTopic) {
VirtualTopic vt = (VirtualTopic) virtualDestination;
String prefix = vt.getPrefix() != null ? vt.getPrefix() : "";
String postfix = vt.getPostfix() != null ? vt.getPostfix() : "";
if (prefix.endsWith(".")) {
prefix = prefix.substring(0, prefix.length() - 1);
}
if (postfix.startsWith(".")) {
postfix = postfix.substring(1, postfix.length());
}
ActiveMQDestination prefixDestination = prefix.length() > 0 ? new ActiveMQTopic(prefix) : null;
ActiveMQDestination postfixDestination = postfix.length() > 0 ? new ActiveMQTopic(postfix) : null;
String[] prefixPaths = prefixDestination != null ? prefixDestination.getDestinationPaths() : new String[] {};
String[] activeMQDestPaths = activeMQDest.getDestinationPaths();
String[] postfixPaths = postfixDestination != null ? postfixDestination.getDestinationPaths() : new String[] {};
//sanity check
if (activeMQDestPaths.length > prefixPaths.length + postfixPaths.length) {
String[] topicPath = Arrays.copyOfRange(activeMQDestPaths, 0 + prefixPaths.length,
activeMQDestPaths.length - postfixPaths.length);
ActiveMQTopic newTopic = new ActiveMQTopic(DestinationPath.toString(topicPath));
info.setDestination(newTopic);
}
}
}
@Override
public void virtualDestinationRemoved(ConnectionContext context,
VirtualDestination virtualDestination) {
super.virtualDestinationRemoved(context, virtualDestination);
if (virtualDestinations.remove(virtualDestination)) {
LOG.debug("Virtual destination removed: {}", virtualDestination);
try {
consumersLock.readLock().lock();
try {
// remove the demand created by the addition of the virtual destination
if (getBrokerService().isUseVirtualDestSubsOnCreation()) {
if (!AdvisorySupport.isAdvisoryTopic(virtualDestination.getVirtualDestination())) {
for (ConsumerInfo info : virtualDestinationConsumers.keySet()) {
//find all consumers for this virtual destination
if (virtualDestinationConsumers.get(info).equals(virtualDestination)) {
fireVirtualDestinationRemoveAdvisory(context, info);
//check consumers created for the existence of a destination to see if they
//match the consumerinfo and clean up
for (VirtualConsumerPair activeMQDest : brokerConsumerDests.keySet()) {
ConsumerInfo i = brokerConsumerDests.get(activeMQDest);
if (info.equals(i) && brokerConsumerDests.remove(activeMQDest) != null) {
LOG.debug("Virtual consumer pair removed: {} for consumer: {} ", activeMQDest, i);
}
}
}
}
}
}
} finally {
consumersLock.readLock().unlock();
}
} catch (Exception e) {
handleFireFailure("virtualDestinationAdded", e);
}
}
}
private void fireVirtualDestinationRemoveAdvisory(ConnectionContext context,
ConsumerInfo info) throws Exception {
VirtualDestination virtualDestination = virtualDestinationConsumers.remove(info);
if (virtualDestination != null) {
LOG.debug("Virtual consumer removed: {}, for virtual destination: {}", info, virtualDestination);
ActiveMQTopic topic = AdvisorySupport.getVirtualDestinationConsumerAdvisoryTopic(virtualDestination.getVirtualDestination());
ActiveMQDestination dest = info.getDestination();
if (!dest.isTemporary() || destinations.containsKey(dest)) {
fireConsumerAdvisory(context, dest, topic, info.createRemoveCommand());
}
}
}
@Override
public void isFull(ConnectionContext context, Destination destination, Usage usage) {
super.isFull(context, destination, usage);
if (AdvisorySupport.isAdvisoryTopic(destination.getActiveMQDestination()) == false) {
try {
ActiveMQTopic topic = AdvisorySupport.getFullAdvisoryTopic(destination.getActiveMQDestination());
ActiveMQMessage advisoryMessage = new ActiveMQMessage();
advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_USAGE_NAME, usage.getName());
advisoryMessage.setLongProperty(AdvisorySupport.MSG_PROPERTY_USAGE_COUNT, usage.getUsage());
fireAdvisory(context, topic, null, null, advisoryMessage);
} catch (Exception e) {
handleFireFailure("is full", e);
}
}
}
@Override
public void nowMasterBroker() {
super.nowMasterBroker();
try {
ActiveMQTopic topic = AdvisorySupport.getMasterBrokerAdvisoryTopic();
ActiveMQMessage advisoryMessage = new ActiveMQMessage();
ConnectionContext context = new ConnectionContext();
context.setSecurityContext(SecurityContext.BROKER_SECURITY_CONTEXT);
context.setBroker(getBrokerService().getBroker());
fireAdvisory(context, topic, null, null, advisoryMessage);
} catch (Exception e) {
handleFireFailure("now master broker", e);
}
}
@Override
public boolean sendToDeadLetterQueue(ConnectionContext context, MessageReference messageReference,
Subscription subscription, Throwable poisonCause) {
boolean wasDLQd = super.sendToDeadLetterQueue(context, messageReference, subscription, poisonCause);
if (wasDLQd) {
try {
if (!messageReference.isAdvisory()) {
BaseDestination baseDestination = (BaseDestination) messageReference.getMessage().getRegionDestination();
ActiveMQTopic topic = AdvisorySupport.getMessageDLQdAdvisoryTopic(baseDestination.getActiveMQDestination());
Message payload = messageReference.getMessage().copy();
if (!baseDestination.isIncludeBodyForAdvisory()) {
payload.clearBody();
}
fireAdvisory(context, topic, payload);
}
} catch (Exception e) {
handleFireFailure("add to DLQ", e);
}
}
return wasDLQd;
}
@Override
public void networkBridgeStarted(BrokerInfo brokerInfo, boolean createdByDuplex, String remoteIp) {
try {
if (brokerInfo != null) {
ActiveMQMessage advisoryMessage = new ActiveMQMessage();
advisoryMessage.setBooleanProperty("started", true);
advisoryMessage.setBooleanProperty("createdByDuplex", createdByDuplex);
advisoryMessage.setStringProperty("remoteIp", remoteIp);
networkBridges.putIfAbsent(brokerInfo, advisoryMessage);
ActiveMQTopic topic = AdvisorySupport.getNetworkBridgeAdvisoryTopic();
ConnectionContext context = new ConnectionContext();
context.setSecurityContext(SecurityContext.BROKER_SECURITY_CONTEXT);
context.setBroker(getBrokerService().getBroker());
fireAdvisory(context, topic, brokerInfo, null, advisoryMessage);
}
} catch (Exception e) {
handleFireFailure("network bridge started", e);
}
}
@Override
public void networkBridgeStopped(BrokerInfo brokerInfo) {
try {
if (brokerInfo != null) {
ActiveMQMessage advisoryMessage = new ActiveMQMessage();
advisoryMessage.setBooleanProperty("started", false);
networkBridges.remove(brokerInfo);
ActiveMQTopic topic = AdvisorySupport.getNetworkBridgeAdvisoryTopic();
ConnectionContext context = new ConnectionContext();
context.setSecurityContext(SecurityContext.BROKER_SECURITY_CONTEXT);
context.setBroker(getBrokerService().getBroker());
fireAdvisory(context, topic, brokerInfo, null, advisoryMessage);
}
} catch (Exception e) {
handleFireFailure("network bridge stopped", e);
}
}
private void handleFireFailure(String message, Throwable cause) {
LOG.warn("Failed to fire {} advisory, reason: {}", message, cause);
LOG.debug("{} detail: {}", message, cause, cause);
}
protected void fireAdvisory(ConnectionContext context, ActiveMQTopic topic, Command command) throws Exception {
fireAdvisory(context, topic, command, null);
}
protected void fireAdvisory(ConnectionContext context, ActiveMQTopic topic, Command command, ConsumerId targetConsumerId) throws Exception {
ActiveMQMessage advisoryMessage = new ActiveMQMessage();
fireAdvisory(context, topic, command, targetConsumerId, advisoryMessage);
}
protected void fireConsumerAdvisory(ConnectionContext context, ActiveMQDestination consumerDestination, ActiveMQTopic topic, Command command) throws Exception {
fireConsumerAdvisory(context, consumerDestination, topic, command, null);
}
protected void fireConsumerAdvisory(ConnectionContext context, ActiveMQDestination consumerDestination, ActiveMQTopic topic, Command command, ConsumerId targetConsumerId) throws Exception {
ActiveMQMessage advisoryMessage = new ActiveMQMessage();
int count = 0;
Set set = getDestinations(consumerDestination);
if (set != null) {
for (Destination dest : set) {
count += dest.getDestinationStatistics().getConsumers().getCount();
}
}
advisoryMessage.setIntProperty(AdvisorySupport.MSG_PROPERTY_CONSUMER_COUNT, count);
fireAdvisory(context, topic, command, targetConsumerId, advisoryMessage);
}
protected void fireProducerAdvisory(ConnectionContext context, ActiveMQDestination producerDestination, ActiveMQTopic topic, Command command) throws Exception {
fireProducerAdvisory(context, producerDestination, topic, command, null);
}
protected void fireProducerAdvisory(ConnectionContext context, ActiveMQDestination producerDestination, ActiveMQTopic topic, Command command, ConsumerId targetConsumerId) throws Exception {
ActiveMQMessage advisoryMessage = new ActiveMQMessage();
int count = 0;
if (producerDestination != null) {
Set set = getDestinations(producerDestination);
if (set != null) {
for (Destination dest : set) {
count += dest.getDestinationStatistics().getProducers().getCount();
}
}
}
advisoryMessage.setIntProperty("producerCount", count);
fireAdvisory(context, topic, command, targetConsumerId, advisoryMessage);
}
public void fireAdvisory(ConnectionContext context, ActiveMQTopic topic, Command command, ConsumerId targetConsumerId, ActiveMQMessage advisoryMessage) throws Exception {
//set properties
advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_ORIGIN_BROKER_NAME, getBrokerName());
String id = getBrokerId() != null ? getBrokerId().getValue() : "NOT_SET";
advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_ORIGIN_BROKER_ID, id);
String url = getBrokerService().getVmConnectorURI().toString();
//try and find the URL on the transport connector and use if it exists else
//try and find a default URL
if (context.getConnector() instanceof TransportConnector
&& ((TransportConnector) context.getConnector()).getPublishableConnectString() != null) {
url = ((TransportConnector) context.getConnector()).getPublishableConnectString();
} else if (getBrokerService().getDefaultSocketURIString() != null) {
url = getBrokerService().getDefaultSocketURIString();
}
advisoryMessage.setStringProperty(AdvisorySupport.MSG_PROPERTY_ORIGIN_BROKER_URL, url);
//set the data structure
advisoryMessage.setDataStructure(command);
advisoryMessage.setPersistent(false);
advisoryMessage.setType(AdvisorySupport.ADIVSORY_MESSAGE_TYPE);
advisoryMessage.setMessageId(new MessageId(advisoryProducerId, messageIdGenerator.getNextSequenceId()));
advisoryMessage.setTargetConsumerId(targetConsumerId);
advisoryMessage.setDestination(topic);
advisoryMessage.setResponseRequired(false);
advisoryMessage.setProducerId(advisoryProducerId);
boolean originalFlowControl = context.isProducerFlowControl();
final ProducerBrokerExchange producerExchange = new ProducerBrokerExchange();
producerExchange.setConnectionContext(context);
producerExchange.setMutable(true);
producerExchange.setProducerState(new ProducerState(new ProducerInfo()));
try {
context.setProducerFlowControl(false);
next.send(producerExchange, advisoryMessage);
} finally {
context.setProducerFlowControl(originalFlowControl);
}
}
public Map getAdvisoryConnections() {
return connections;
}
public Collection getAdvisoryConsumers() {
consumersLock.readLock().lock();
try {
return new ArrayList(consumers.values());
} finally {
consumersLock.readLock().unlock();
}
}
public Map getAdvisoryProducers() {
return producers;
}
public Map getAdvisoryDestinations() {
return destinations;
}
public ConcurrentMap getVirtualDestinationConsumers() {
return virtualDestinationConsumers;
}
private class VirtualConsumerPair {
private final VirtualDestination virtualDestination;
//destination that matches this virtualDestination as part target
//this is so we can keep track of more than one destination that might
//match the virtualDestination and cause demand
private final ActiveMQDestination activeMQDestination;
public VirtualConsumerPair(VirtualDestination virtualDestination,
ActiveMQDestination activeMQDestination) {
super();
this.virtualDestination = virtualDestination;
this.activeMQDestination = activeMQDestination;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + getOuterType().hashCode();
result = prime
* result
+ ((activeMQDestination == null) ? 0 : activeMQDestination
.hashCode());
result = prime
* result
+ ((virtualDestination == null) ? 0 : virtualDestination
.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
VirtualConsumerPair other = (VirtualConsumerPair) obj;
if (!getOuterType().equals(other.getOuterType()))
return false;
if (activeMQDestination == null) {
if (other.activeMQDestination != null)
return false;
} else if (!activeMQDestination.equals(other.activeMQDestination))
return false;
if (virtualDestination == null) {
if (other.virtualDestination != null)
return false;
} else if (!virtualDestination.equals(other.virtualDestination))
return false;
return true;
}
@Override
public String toString() {
return "VirtualConsumerPair [virtualDestination=" + virtualDestination + ", activeMQDestination="
+ activeMQDestination + "]";
}
private AdvisoryBroker getOuterType() {
return AdvisoryBroker.this;
}
}
}