/**
* 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.store.amq;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.command.ActiveMQTopic;
import org.apache.activemq.command.JournalTopicAck;
import org.apache.activemq.command.MessageAck;
import org.apache.activemq.command.MessageId;
import org.apache.activemq.command.SubscriptionInfo;
import org.apache.activemq.kaha.impl.async.Location;
import org.apache.activemq.store.MessageRecoveryListener;
import org.apache.activemq.store.TopicMessageStore;
import org.apache.activemq.store.TopicReferenceStore;
import org.apache.activemq.transaction.Synchronization;
import org.apache.activemq.util.Callback;
import org.apache.activemq.util.SubscriptionKey;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* A MessageStore that uses a Journal to store it's messages.
*
* @version $Revision: 1.13 $
*/
public class AMQTopicMessageStore extends AMQMessageStore implements TopicMessageStore {
private static final Log LOG = LogFactory.getLog(AMQTopicMessageStore.class);
private TopicReferenceStore topicReferenceStore;
private Map<SubscriptionKey, MessageId> ackedLastAckLocations = new HashMap<SubscriptionKey, MessageId>();
public AMQTopicMessageStore(AMQPersistenceAdapter adapter, TopicReferenceStore topicReferenceStore, ActiveMQTopic destinationName) {
super(adapter, topicReferenceStore, destinationName);
this.topicReferenceStore = topicReferenceStore;
}
public void recoverSubscription(String clientId, String subscriptionName, MessageRecoveryListener listener) throws Exception {
flush();
topicReferenceStore.recoverSubscription(clientId, subscriptionName, new RecoveryListenerAdapter(this, listener));
}
public void recoverNextMessages(String clientId, String subscriptionName,
int maxReturned, final MessageRecoveryListener listener)
throws Exception {
RecoveryListenerAdapter recoveryListener = new RecoveryListenerAdapter(this, listener);
topicReferenceStore.recoverNextMessages(clientId, subscriptionName,maxReturned, recoveryListener);
if (recoveryListener.size() == 0) {
flush();
topicReferenceStore.recoverNextMessages(clientId,subscriptionName, maxReturned, recoveryListener);
}
}
public SubscriptionInfo lookupSubscription(String clientId, String subscriptionName) throws IOException {
return topicReferenceStore.lookupSubscription(clientId, subscriptionName);
}
public void addSubsciption(SubscriptionInfo subscriptionInfo, boolean retroactive) throws IOException {
topicReferenceStore.addSubsciption(subscriptionInfo, retroactive);
}
/**
*/
public void acknowledge(final ConnectionContext context, final String clientId, final String subscriptionName, final MessageId messageId) throws IOException {
final boolean debug = LOG.isDebugEnabled();
JournalTopicAck ack = new JournalTopicAck();
ack.setDestination(destination);
ack.setMessageId(messageId);
ack.setMessageSequenceId(messageId.getBrokerSequenceId());
ack.setSubscritionName(subscriptionName);
ack.setClientId(clientId);
ack.setTransactionId(context.getTransaction() != null ? context.getTransaction().getTransactionId() : null);
final Location location = peristenceAdapter.writeCommand(ack, false);
final SubscriptionKey key = new SubscriptionKey(clientId, subscriptionName);
if (!context.isInTransaction()) {
if (debug) {
LOG.debug("Journalled acknowledge for: " + messageId + ", at: " + location);
}
acknowledge(context,messageId, location, clientId,subscriptionName);
} else {
if (debug) {
LOG.debug("Journalled transacted acknowledge for: " + messageId + ", at: " + location);
}
synchronized (this) {
inFlightTxLocations.add(location);
}
transactionStore.acknowledge(this, ack, location);
context.getTransaction().addSynchronization(new Synchronization() {
public void afterCommit() throws Exception {
if (debug) {
LOG.debug("Transacted acknowledge commit for: " + messageId + ", at: " + location);
}
synchronized (AMQTopicMessageStore.this) {
inFlightTxLocations.remove(location);
acknowledge(context,messageId, location, clientId,subscriptionName);
}
}
public void afterRollback() throws Exception {
if (debug) {
LOG.debug("Transacted acknowledge rollback for: " + messageId + ", at: " + location);
}
synchronized (AMQTopicMessageStore.this) {
inFlightTxLocations.remove(location);
}
}
});
}
}
public boolean replayAcknowledge(ConnectionContext context, String clientId, String subscritionName, MessageId messageId) {
try {
SubscriptionInfo sub = topicReferenceStore.lookupSubscription(clientId, subscritionName);
if (sub != null) {
topicReferenceStore.acknowledge(context, clientId, subscritionName, messageId);
return true;
}
} catch (Throwable e) {
LOG.debug("Could not replay acknowledge for message '" + messageId + "'. Message may have already been acknowledged. reason: " + e);
}
return false;
}
/**
* @param messageId
* @param location
* @param key
* @throws IOException
*/
protected void acknowledge(ConnectionContext context, MessageId messageId,
Location location, String clientId, String subscriptionName)
throws IOException {
synchronized (this) {
lastLocation = location;
}
if (topicReferenceStore.acknowledgeReference(context, clientId,
subscriptionName, messageId)) {
MessageAck ack = new MessageAck();
ack.setLastMessageId(messageId);
removeMessage(context, ack);
}
try {
asyncWriteTask.wakeup();
} catch (InterruptedException e) {
throw new InterruptedIOException();
}
}
/**
* @return Returns the longTermStore.
*/
public TopicReferenceStore getTopicReferenceStore() {
return topicReferenceStore;
}
public void deleteSubscription(String clientId, String subscriptionName) throws IOException {
topicReferenceStore.deleteSubscription(clientId, subscriptionName);
}
public SubscriptionInfo[] getAllSubscriptions() throws IOException {
return topicReferenceStore.getAllSubscriptions();
}
public int getMessageCount(String clientId, String subscriberName) throws IOException {
flush();
return topicReferenceStore.getMessageCount(clientId, subscriberName);
}
public void resetBatching(String clientId, String subscriptionName) {
topicReferenceStore.resetBatching(clientId, subscriptionName);
}
}