| /* |
| * |
| * 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.qpid.server.queue; |
| |
| import org.apache.qpid.server.message.MessageInstance; |
| import org.apache.qpid.server.model.Queue; |
| import org.apache.qpid.server.store.MessageDurability; |
| |
| abstract class AbstractQueueEntryList implements QueueEntryList |
| { |
| |
| private final boolean _forcePersistent; |
| private final boolean _respectPersistent; |
| private final Queue<?> _queue; |
| private final QueueStatistics _queueStatistics; |
| |
| protected AbstractQueueEntryList(final Queue<?> queue, final QueueStatistics queueStatistics) |
| { |
| |
| final MessageDurability messageDurability = queue.getMessageDurability(); |
| _queue = queue; |
| _queueStatistics = queueStatistics; |
| _forcePersistent = messageDurability == MessageDurability.ALWAYS; |
| _respectPersistent = messageDurability == MessageDurability.DEFAULT; |
| } |
| |
| |
| void updateStatsOnEnqueue(QueueEntry entry) |
| { |
| final long sizeWithHeader = entry.getSizeWithHeader(); |
| final QueueStatistics queueStatistics = _queueStatistics; |
| queueStatistics.addToAvailable(sizeWithHeader); |
| queueStatistics.addToQueue(sizeWithHeader); |
| queueStatistics.addToEnqueued(sizeWithHeader); |
| if(_forcePersistent || (_respectPersistent && entry.getMessage().isPersistent())) |
| { |
| queueStatistics.addToPersistentEnqueued(sizeWithHeader); |
| } |
| } |
| |
| @Override |
| public void updateStatsOnStateChange(QueueEntry entry, QueueEntry.EntryState fromState, QueueEntry.EntryState toState) |
| { |
| final QueueStatistics queueStatistics = _queueStatistics; |
| final long sizeWithHeader = entry.getSizeWithHeader(); |
| |
| final boolean isConsumerAcquired = toState instanceof MessageInstance.ConsumerAcquiredState; |
| final boolean wasConsumerAcquired = fromState instanceof MessageInstance.ConsumerAcquiredState; |
| |
| switch(fromState.getState()) |
| { |
| case AVAILABLE: |
| queueStatistics.removeFromAvailable(sizeWithHeader); |
| break; |
| case ACQUIRED: |
| if(wasConsumerAcquired && !isConsumerAcquired) |
| { |
| queueStatistics.removeFromUnacknowledged(sizeWithHeader); |
| } |
| break; |
| } |
| switch(toState.getState()) |
| { |
| case AVAILABLE: |
| queueStatistics.addToAvailable(sizeWithHeader); |
| _queue.checkCapacity(); |
| break; |
| case ACQUIRED: |
| if(isConsumerAcquired && !wasConsumerAcquired) |
| { |
| queueStatistics.addToUnacknowledged(sizeWithHeader); |
| } |
| break; |
| case DELETED: |
| queueStatistics.removeFromQueue(sizeWithHeader); |
| queueStatistics.addToDequeued(sizeWithHeader); |
| if(_forcePersistent || (_respectPersistent && entry.isPersistent())) |
| { |
| queueStatistics.addToPersistentDequeued(sizeWithHeader); |
| } |
| _queue.checkCapacity(); |
| |
| } |
| } |
| |
| } |