public void removeMessage(ConnectionContext context, final MessageAck ack) throws IOException {
final boolean debug = LOG.isDebugEnabled();
JournalQueueAck remove = new JournalQueueAck();
remove.setDestination(destination);
remove.setMessageAck(ack);
final RecordLocation location =
peristenceAdapter.writeCommand(remove, ack.isResponseRequired());
if (!context.isInTransaction()) {
if (debug) {
LOG.debug("Journalled message remove for: " + ack.getLastMessageId() + ", at: " + location);
}
removeMessage(ack, location);
} else {
if (debug) {
LOG.debug(
"Journalled transacted message remove for: "
+ ack.getLastMessageId()
+ ", at: "
+ location);
}
synchronized (this) {
inFlightTxLocations.add(location);
}
transactionStore.removeMessage(this, ack, location);
context
.getTransaction()
.addSynchronization(
new Synchronization() {
public void afterCommit() throws Exception {
if (debug) {
LOG.debug(
"Transacted message remove commit for: "
+ ack.getLastMessageId()
+ ", at: "
+ location);
}
synchronized (JournalMessageStore.this) {
inFlightTxLocations.remove(location);
removeMessage(ack, location);
}
}
public void afterRollback() throws Exception {
if (debug) {
LOG.debug(
"Transacted message remove rollback for: "
+ ack.getLastMessageId()
+ ", at: "
+ location);
}
synchronized (JournalMessageStore.this) {
inFlightTxLocations.remove(location);
}
}
});
}
}
public JournalMessageStore(
JournalPersistenceAdapter adapter,
MessageStore checkpointStore,
ActiveMQDestination destination) {
super(destination);
this.peristenceAdapter = adapter;
this.transactionStore = adapter.getTransactionStore();
this.longTermStore = checkpointStore;
this.transactionTemplate =
new TransactionTemplate(
adapter, new ConnectionContext(new NonCachedMessageEvaluationContext()));
}
/**
* Not synchronized since the Journal has better throughput if you increase the number of
* concurrent writes that it is doing.
*/
public void addMessage(final ConnectionContext context, final Message message)
throws IOException {
final MessageId id = message.getMessageId();
final boolean debug = LOG.isDebugEnabled();
message.incrementReferenceCount();
final RecordLocation location =
peristenceAdapter.writeCommand(message, message.isResponseRequired());
if (!context.isInTransaction()) {
if (debug) {
LOG.debug("Journalled message add for: " + id + ", at: " + location);
}
addMessage(context, message, location);
} else {
if (debug) {
LOG.debug("Journalled transacted message add for: " + id + ", at: " + location);
}
synchronized (this) {
inFlightTxLocations.add(location);
}
transactionStore.addMessage(this, message, location);
context
.getTransaction()
.addSynchronization(
new Synchronization() {
public void afterCommit() throws Exception {
if (debug) {
LOG.debug("Transacted message add commit for: " + id + ", at: " + location);
}
synchronized (JournalMessageStore.this) {
inFlightTxLocations.remove(location);
addMessage(context, message, location);
}
}
public void afterRollback() throws Exception {
if (debug) {
LOG.debug("Transacted message add rollback for: " + id + ", at: " + location);
}
synchronized (JournalMessageStore.this) {
inFlightTxLocations.remove(location);
}
message.decrementReferenceCount();
}
});
}
}
@Override
public void setBatch(MessageId messageId) throws Exception {
peristenceAdapter.checkpoint(true, true);
longTermStore.setBatch(messageId);
}
public void recoverNextMessages(int maxReturned, MessageRecoveryListener listener)
throws Exception {
peristenceAdapter.checkpoint(true, true);
longTermStore.recoverNextMessages(maxReturned, listener);
}
public long getMessageSize() throws IOException {
peristenceAdapter.checkpoint(true, true);
return longTermStore.getMessageSize();
}
/** @see org.apache.activemq.store.MessageStore#removeAllMessages(ConnectionContext) */
public void removeAllMessages(ConnectionContext context) throws IOException {
peristenceAdapter.checkpoint(true, true);
longTermStore.removeAllMessages(context);
}
/**
* Replays the checkpointStore first as those messages are the oldest ones, then messages are
* replayed from the transaction log and then the cache is updated.
*
* @param listener
* @throws Exception
*/
public void recover(final MessageRecoveryListener listener) throws Exception {
peristenceAdapter.checkpoint(true, true);
longTermStore.recover(listener);
}
/**
* @return
* @throws IOException
*/
@SuppressWarnings("unchecked")
public RecordLocation checkpoint(final Callback postCheckpointTest) throws IOException {
final List<MessageAck> cpRemovedMessageLocations;
final List<RecordLocation> cpActiveJournalLocations;
final int maxCheckpointMessageAddSize = peristenceAdapter.getMaxCheckpointMessageAddSize();
// swap out the message hash maps..
synchronized (this) {
cpAddedMessageIds = this.messages;
cpRemovedMessageLocations = this.messageAcks;
cpActiveJournalLocations = new ArrayList<RecordLocation>(inFlightTxLocations);
this.messages = new LinkedHashMap<MessageId, Message>();
this.messageAcks = new ArrayList<MessageAck>();
}
transactionTemplate.run(
new Callback() {
public void execute() throws Exception {
int size = 0;
PersistenceAdapter persitanceAdapter = transactionTemplate.getPersistenceAdapter();
ConnectionContext context = transactionTemplate.getContext();
// Checkpoint the added messages.
synchronized (JournalMessageStore.this) {
Iterator<Message> iterator = cpAddedMessageIds.values().iterator();
while (iterator.hasNext()) {
Message message = iterator.next();
try {
longTermStore.addMessage(context, message);
} catch (Throwable e) {
LOG.warn("Message could not be added to long term store: " + e.getMessage(), e);
}
size += message.getSize();
message.decrementReferenceCount();
// Commit the batch if it's getting too big
if (size >= maxCheckpointMessageAddSize) {
persitanceAdapter.commitTransaction(context);
persitanceAdapter.beginTransaction(context);
size = 0;
}
}
}
persitanceAdapter.commitTransaction(context);
persitanceAdapter.beginTransaction(context);
// Checkpoint the removed messages.
Iterator<MessageAck> iterator = cpRemovedMessageLocations.iterator();
while (iterator.hasNext()) {
try {
MessageAck ack = iterator.next();
longTermStore.removeMessage(transactionTemplate.getContext(), ack);
} catch (Throwable e) {
LOG.debug(
"Message could not be removed from long term store: " + e.getMessage(), e);
}
}
if (postCheckpointTest != null) {
postCheckpointTest.execute();
}
}
});
synchronized (this) {
cpAddedMessageIds = null;
}
if (cpActiveJournalLocations.size() > 0) {
Collections.sort(cpActiveJournalLocations);
return cpActiveJournalLocations.get(0);
}
synchronized (this) {
return lastLocation;
}
}
