private void doRollback(
final boolean clientFailed, final boolean lastMessageAsDelived, final Transaction theTx)
throws Exception {
boolean wasStarted = started;
List<MessageReference> toCancel = new ArrayList<MessageReference>();
for (ServerConsumer consumer : consumers.values()) {
if (wasStarted) {
consumer.setStarted(false);
}
toCancel.addAll(consumer.cancelRefs(clientFailed, lastMessageAsDelived, theTx));
}
for (MessageReference ref : toCancel) {
ref.getQueue().cancel(theTx, ref);
}
if (wasStarted) {
theTx.addOperation(
new TransactionOperationAbstract() {
public void afterRollback(Transaction tx) {
for (ServerConsumer consumer : consumers.values()) {
consumer.setStarted(true);
}
}
});
}
theTx.rollback();
}
public void expire(final long consumerID, final long messageID) throws Exception {
MessageReference ref = consumers.get(consumerID).removeReferenceByID(messageID);
if (ref != null) {
ref.getQueue().expire(ref);
}
}
public long countMessages(final String filterStr) throws Exception {
checkStarted();
clearIO();
try {
Filter filter = FilterImpl.createFilter(filterStr);
if (filter == null) {
return getMessageCount();
} else {
LinkedListIterator<MessageReference> iterator = queue.iterator();
try {
int count = 0;
while (iterator.hasNext()) {
MessageReference ref = iterator.next();
if (filter.match(ref.getMessage())) {
count++;
}
}
return count;
} finally {
iterator.close();
}
}
} finally {
blockOnIO();
}
}
public Map<String, Object>[] listMessages(final String filterStr) throws Exception {
checkStarted();
clearIO();
try {
Filter filter = FilterImpl.createFilter(filterStr);
List<Map<String, Object>> messages = new ArrayList<Map<String, Object>>();
queue.flushExecutor();
LinkedListIterator<MessageReference> iterator = queue.iterator();
try {
while (iterator.hasNext()) {
MessageReference ref = iterator.next();
if (filter == null || filter.match(ref.getMessage())) {
Message message = ref.getMessage();
messages.add(message.toMap());
}
}
return messages.toArray(new Map[messages.size()]);
} finally {
iterator.close();
}
} catch (HornetQException e) {
throw new IllegalStateException(e.getMessage());
} finally {
blockOnIO();
}
}
public MessageReference removeReferenceByID(final long messageID) throws Exception {
if (browseOnly) {
return null;
}
// Expiries can come in out of sequence with respect to delivery order
Iterator<MessageReference> iter = deliveringRefs.iterator();
MessageReference ref = null;
while (iter.hasNext()) {
MessageReference theRef = iter.next();
if (theRef.getMessage().getMessageID() == messageID) {
iter.remove();
ref = theRef;
break;
}
}
return ref;
}
public synchronized HandleStatus handle(final MessageReference reference) {
if (statusToReturn == HandleStatus.BUSY) {
return HandleStatus.BUSY;
}
if (filter != null) {
if (filter.match(reference.getMessage())) {
references.addLast(reference);
reference.getQueue().referenceHandled();
notify();
return HandleStatus.HANDLED;
} else {
return HandleStatus.NO_MATCH;
}
}
if (newStatus != null) {
if (delayCountdown == 0) {
statusToReturn = newStatus;
newStatus = null;
} else {
delayCountdown--;
}
}
if (statusToReturn == HandleStatus.HANDLED) {
reference.getQueue().referenceHandled();
references.addLast(reference);
notify();
}
return statusToReturn;
}
private void doRollback(
final boolean clientFailed, final boolean lastMessageAsDelived, final Transaction theTx)
throws Exception {
boolean wasStarted = started;
List<MessageReference> toCancel = new ArrayList<MessageReference>();
for (ServerConsumer consumer : consumers.values()) {
if (wasStarted) {
consumer.setStarted(false);
}
toCancel.addAll(consumer.cancelRefs(clientFailed, lastMessageAsDelived, theTx));
}
for (MessageReference ref : toCancel) {
ref.getQueue().cancel(theTx, ref);
}
// if we failed don't restart as an attempt to deliver messages may be made before we actually
// close the consumer
if (wasStarted && !clientFailed) {
theTx.addOperation(
new TransactionOperationAbstract() {
@Override
public void afterRollback(Transaction tx) {
for (ServerConsumer consumer : consumers.values()) {
consumer.setStarted(true);
}
}
});
}
theTx.rollback();
}
@Override
public boolean equals(Object other) {
if (this == other) {
return true;
}
if (other instanceof MessageReferenceImpl) {
MessageReference reference = (MessageReferenceImpl) other;
if (this.getMessage().equals(reference.getMessage())) return true;
}
return false;
}
public LinkedList<MessageReference> cancelRefs(
final boolean failed, final boolean lastConsumedAsDelivered, final Transaction tx)
throws Exception {
boolean performACK = lastConsumedAsDelivered;
try {
if (largeMessageDeliverer != null) {
largeMessageDeliverer.finish();
}
} catch (Throwable e) {
HornetQServerLogger.LOGGER.errorResttingLargeMessage(e, largeMessageDeliverer);
} finally {
largeMessageDeliverer = null;
}
LinkedList<MessageReference> refs = new LinkedList<MessageReference>();
if (!deliveringRefs.isEmpty()) {
for (MessageReference ref : deliveringRefs) {
if (isTrace) {
HornetQServerLogger.LOGGER.trace(
"Cancelling reference for messageID = "
+ ref.getMessage().getMessageID()
+ ", ref = "
+ ref);
}
if (performACK) {
acknowledge(false, tx, ref.getMessage().getMessageID());
performACK = false;
} else {
if (!failed) {
// We don't decrement delivery count if the client failed, since there's a possibility
// that refs
// were actually delivered but we just didn't get any acks for them
// before failure
ref.decrementDeliveryCount();
}
refs.add(ref);
}
}
deliveringRefs.clear();
}
return refs;
}
public Map<String, Object>[] listScheduledMessages() throws Exception {
checkStarted();
clearIO();
try {
List<MessageReference> refs = queue.getScheduledMessages();
Map<String, Object>[] messages = new Map[refs.size()];
int i = 0;
for (MessageReference ref : refs) {
Message message = ref.getMessage();
messages[i++] = message.toMap();
}
return messages;
} finally {
blockOnIO();
}
}
public void individualAcknowledge(
final boolean autoCommitAcks, final Transaction tx, final long messageID) throws Exception {
if (browseOnly) {
return;
}
MessageReference ref = removeReferenceByID(messageID);
if (ref == null) {
throw new IllegalStateException("Cannot find ref to ack " + messageID);
}
if (autoCommitAcks) {
ref.getQueue().acknowledge(ref);
} else {
ref.getQueue().acknowledge(tx, ref);
}
}
/**
* @param ref
* @param message
*/
private void deliverStandardMessage(final MessageReference ref, final ServerMessage message) {
int packetSize = callback.sendMessage(message, id, ref.getDeliveryCount());
if (availableCredits != null) {
availableCredits.addAndGet(-packetSize);
if (HornetQServerLogger.LOGGER.isTraceEnabled()) {
HornetQServerLogger.LOGGER.trace(
this
+ "::FlowControl::delivery standard taking "
+ packetSize
+ " from credits, available now is "
+ availableCredits);
}
}
}
public void proceedDeliver(MessageReference reference) throws Exception {
try {
ServerMessage message = reference.getMessage();
if (message.isLargeMessage()) {
if (largeMessageDeliverer == null) {
// This can't really happen as handle had already crated the deliverer
// instead of throwing an exception in weird cases there is no problem on just go ahead
// and create it
// again here
largeMessageDeliverer =
new LargeMessageDeliverer((LargeServerMessage) message, reference);
}
// The deliverer was prepared during handle, as we can't have more than one pending large
// message
// as it would return busy if there is anything pending
largeMessageDeliverer.deliver();
} else {
deliverStandardMessage(reference, message);
}
} finally {
lockDelivery.readLock().unlock();
}
}
public boolean deliver() throws Exception {
lockDelivery.readLock().lock();
try {
if (largeMessage == null) {
return true;
}
if (availableCredits != null && availableCredits.get() <= 0) {
if (HornetQServerLogger.LOGGER.isTraceEnabled()) {
HornetQServerLogger.LOGGER.trace(
this
+ "::FlowControl::delivery largeMessage interrupting as there are no more credits, available="
+ availableCredits);
}
return false;
}
if (!sentInitialPacket) {
context = largeMessage.getBodyEncoder();
sizePendingLargeMessage = context.getLargeBodySize();
context.open();
sentInitialPacket = true;
int packetSize =
callback.sendLargeMessage(
largeMessage, id, context.getLargeBodySize(), ref.getDeliveryCount());
if (availableCredits != null) {
availableCredits.addAndGet(-packetSize);
if (HornetQServerLogger.LOGGER.isTraceEnabled()) {
HornetQServerLogger.LOGGER.trace(
this
+ "::FlowControl::"
+ " deliver initialpackage with "
+ packetSize
+ " delivered, available now = "
+ availableCredits);
}
}
// Execute the rest of the large message on a different thread so as not to tie up the
// delivery thread
// for too long
resumeLargeMessage();
return false;
} else {
if (availableCredits != null && availableCredits.get() <= 0) {
if (ServerConsumerImpl.isTrace) {
HornetQServerLogger.LOGGER.trace(
this
+ "::FlowControl::deliverLargeMessage Leaving loop of send LargeMessage because of credits, available="
+ availableCredits);
}
return false;
}
int localChunkLen = 0;
localChunkLen =
(int)
Math.min(
sizePendingLargeMessage - positionPendingLargeMessage, minLargeMessageSize);
HornetQBuffer bodyBuffer = HornetQBuffers.fixedBuffer(localChunkLen);
context.encode(bodyBuffer, localChunkLen);
byte[] body = bodyBuffer.toByteBuffer().array();
int packetSize =
callback.sendLargeMessageContinuation(
id,
body,
positionPendingLargeMessage + localChunkLen < sizePendingLargeMessage,
false);
int chunkLen = body.length;
if (availableCredits != null) {
availableCredits.addAndGet(-packetSize);
if (HornetQServerLogger.LOGGER.isTraceEnabled()) {
HornetQServerLogger.LOGGER.trace(
this
+ "::FlowControl::largeMessage deliver continuation, packetSize="
+ packetSize
+ " available now="
+ availableCredits);
}
}
positionPendingLargeMessage += chunkLen;
if (positionPendingLargeMessage < sizePendingLargeMessage) {
resumeLargeMessage();
return false;
}
}
if (ServerConsumerImpl.isTrace) {
HornetQServerLogger.LOGGER.trace("Finished deliverLargeMessage");
}
finish();
return true;
} finally {
lockDelivery.readLock().unlock();
}
}
public void acknowledge(final boolean autoCommitAcks, Transaction tx, final long messageID)
throws Exception {
if (browseOnly) {
return;
}
// Acknowledge acknowledges all refs delivered by the consumer up to and including the one
// explicitly
// acknowledged
// We use a transaction here as if the message is not found, we should rollback anything done
// This could eventually happen on retries during transactions, and we need to make sure we
// don't ACK things we are not supposed to acknowledge
boolean startedTransaction = false;
if (tx == null || autoCommitAcks) {
startedTransaction = true;
tx = new TransactionImpl(storageManager);
}
try {
MessageReference ref;
do {
ref = deliveringRefs.poll();
if (HornetQServerLogger.LOGGER.isTraceEnabled()) {
HornetQServerLogger.LOGGER.trace(
"ACKing ref " + ref + " on tx= " + tx + ", consumer=" + this);
}
if (ref == null) {
throw HornetQMessageBundle.BUNDLE.consumerNoReference(
id, messageID, messageQueue.getName());
}
ref.getQueue().acknowledge(tx, ref);
} while (ref.getMessage().getMessageID() != messageID);
if (startedTransaction) {
tx.commit();
}
} catch (HornetQException e) {
if (startedTransaction) {
tx.rollback();
} else {
tx.markAsRollbackOnly(e);
}
throw e;
} catch (Throwable e) {
HornetQServerLogger.LOGGER.errorAckingMessage((Exception) e);
HornetQException hqex = new HornetQIllegalStateException(e.getMessage());
if (startedTransaction) {
tx.rollback();
} else {
tx.markAsRollbackOnly(hqex);
}
throw hqex;
}
}
public void close(final boolean failed) throws Exception {
callback.removeReadyListener(this);
setStarted(false);
LargeMessageDeliverer del = largeMessageDeliverer;
if (del != null) {
del.finish();
}
if (browseOnly) {
browserDeliverer.close();
} else {
messageQueue.removeConsumer(this);
}
session.removeConsumer(id);
LinkedList<MessageReference> refs = cancelRefs(failed, false, null);
Iterator<MessageReference> iter = refs.iterator();
Transaction tx = new TransactionImpl(storageManager);
while (iter.hasNext()) {
MessageReference ref = iter.next();
ref.getQueue().cancel(tx, ref);
}
tx.rollback();
if (!browseOnly) {
TypedProperties props = new TypedProperties();
props.putSimpleStringProperty(ManagementHelper.HDR_ADDRESS, binding.getAddress());
props.putSimpleStringProperty(ManagementHelper.HDR_CLUSTER_NAME, binding.getClusterName());
props.putSimpleStringProperty(ManagementHelper.HDR_ROUTING_NAME, binding.getRoutingName());
props.putSimpleStringProperty(
ManagementHelper.HDR_FILTERSTRING, filter == null ? null : filter.getFilterString());
props.putIntProperty(ManagementHelper.HDR_DISTANCE, binding.getDistance());
props.putIntProperty(ManagementHelper.HDR_CONSUMER_COUNT, messageQueue.getConsumerCount());
// HORNETQ-946
props.putSimpleStringProperty(
ManagementHelper.HDR_USER, SimpleString.toSimpleString(session.getUsername()));
props.putSimpleStringProperty(
ManagementHelper.HDR_REMOTE_ADDRESS,
SimpleString.toSimpleString(
((ServerSessionImpl) session).getRemotingConnection().getRemoteAddress()));
props.putSimpleStringProperty(
ManagementHelper.HDR_SESSION_NAME, SimpleString.toSimpleString(session.getName()));
Notification notification = new Notification(null, NotificationType.CONSUMER_CLOSED, props);
managementService.sendNotification(notification);
}
}
public HandleStatus handle(final MessageReference ref) throws Exception {
if (availableCredits != null && availableCredits.get() <= 0) {
if (HornetQServerLogger.LOGGER.isDebugEnabled()) {
HornetQServerLogger.LOGGER.debug(
this
+ " is busy for the lack of credits. Current credits = "
+ availableCredits
+ " Can't receive reference "
+ ref);
}
return HandleStatus.BUSY;
}
// TODO - https://jira.jboss.org/browse/HORNETQ-533
// if (!writeReady.get())
// {
// return HandleStatus.BUSY;
// }
synchronized (lock) {
// If the consumer is stopped then we don't accept the message, it
// should go back into the
// queue for delivery later.
if (!started || transferring) {
return HandleStatus.BUSY;
}
// If there is a pendingLargeMessage we can't take another message
// This has to be checked inside the lock as the set to null is done inside the lock
if (largeMessageDeliverer != null) {
if (HornetQServerLogger.LOGGER.isDebugEnabled()) {
HornetQServerLogger.LOGGER.debug(
this
+ " is busy delivering large message "
+ largeMessageDeliverer
+ ", can't deliver reference "
+ ref);
}
return HandleStatus.BUSY;
}
final ServerMessage message = ref.getMessage();
if (filter != null && !filter.match(message)) {
if (HornetQServerLogger.LOGGER.isTraceEnabled()) {
HornetQServerLogger.LOGGER.trace(
"Reference " + ref + " is a noMatch on consumer " + this);
}
return HandleStatus.NO_MATCH;
}
if (HornetQServerLogger.LOGGER.isTraceEnabled()) {
HornetQServerLogger.LOGGER.trace("Handling reference " + ref);
}
if (!browseOnly) {
if (!preAcknowledge) {
deliveringRefs.add(ref);
}
ref.handled();
ref.incrementDeliveryCount();
// If updateDeliveries = false (set by strict-update),
// the updateDeliveryCount would still be updated after c
if (strictUpdateDeliveryCount && !ref.isPaged()) {
if (ref.getMessage().isDurable()
&& ref.getQueue().isDurable()
&& !ref.getQueue().isInternalQueue()
&& !ref.isPaged()) {
storageManager.updateDeliveryCount(ref);
}
}
if (preAcknowledge) {
if (message.isLargeMessage()) {
// we must hold one reference, or the file will be deleted before it could be delivered
((LargeServerMessage) message).incrementDelayDeletionCount();
}
// With pre-ack, we ack *before* sending to the client
ref.getQueue().acknowledge(ref);
}
}
if (message.isLargeMessage()) {
largeMessageDeliverer = new LargeMessageDeliverer((LargeServerMessage) message, ref);
}
lockDelivery.readLock().lock();
return HandleStatus.HANDLED;
}
}
