| /** |
| * 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.kahadaptor; |
| |
| import java.io.IOException; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.concurrent.locks.Lock; |
| import java.util.concurrent.locks.ReentrantLock; |
| |
| import org.apache.activemq.ActiveMQMessageAudit; |
| import org.apache.activemq.broker.ConnectionContext; |
| import org.apache.activemq.command.ActiveMQDestination; |
| import org.apache.activemq.command.Message; |
| import org.apache.activemq.command.MessageAck; |
| import org.apache.activemq.command.MessageId; |
| import org.apache.activemq.kaha.MapContainer; |
| import org.apache.activemq.kaha.MessageAckWithLocation; |
| import org.apache.activemq.kaha.StoreEntry; |
| import org.apache.activemq.store.AbstractMessageStore; |
| import org.apache.activemq.store.MessageRecoveryListener; |
| import org.apache.activemq.store.ReferenceStore; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * @author rajdavies |
| * |
| */ |
| public class KahaReferenceStore extends AbstractMessageStore implements ReferenceStore { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(KahaReferenceStore.class); |
| protected final MapContainer<MessageId, ReferenceRecord> messageContainer; |
| protected KahaReferenceStoreAdapter adapter; |
| // keep track of dispatched messages so that duplicate sends that follow a successful |
| // dispatch can be suppressed. |
| protected ActiveMQMessageAudit dispatchAudit = new ActiveMQMessageAudit(); |
| private StoreEntry batchEntry; |
| private String lastBatchId; |
| protected final Lock lock = new ReentrantLock(); |
| |
| public KahaReferenceStore(KahaReferenceStoreAdapter adapter, MapContainer<MessageId, ReferenceRecord> container, |
| ActiveMQDestination destination) throws IOException { |
| super(destination); |
| this.adapter = adapter; |
| this.messageContainer = container; |
| } |
| |
| public Lock getStoreLock() { |
| return lock; |
| } |
| |
| public void dispose(ConnectionContext context) { |
| super.dispose(context); |
| this.messageContainer.delete(); |
| this.adapter.removeReferenceStore(this); |
| } |
| |
| protected MessageId getMessageId(Object object) { |
| return new MessageId(((ReferenceRecord)object).getMessageId()); |
| } |
| |
| public void addMessage(ConnectionContext context, Message message) throws IOException { |
| throw new RuntimeException("Use addMessageReference instead"); |
| } |
| |
| public Message getMessage(MessageId identity) throws IOException { |
| throw new RuntimeException("Use addMessageReference instead"); |
| } |
| |
| protected final boolean recoverReference(MessageRecoveryListener listener, |
| ReferenceRecord record) throws Exception { |
| MessageId id = new MessageId(record.getMessageId()); |
| if (listener.hasSpace()) { |
| return listener.recoverMessageReference(id); |
| } |
| return false; |
| } |
| |
| public void recover(MessageRecoveryListener listener) throws Exception { |
| lock.lock(); |
| try { |
| for (StoreEntry entry = messageContainer.getFirst(); entry != null; entry = messageContainer |
| .getNext(entry)) { |
| ReferenceRecord record = messageContainer.getValue(entry); |
| if (!recoverReference(listener, record)) { |
| break; |
| } |
| } |
| }finally { |
| lock.unlock(); |
| } |
| } |
| |
| public void recoverNextMessages(int maxReturned, MessageRecoveryListener listener) |
| throws Exception { |
| lock.lock(); |
| try { |
| StoreEntry entry = batchEntry; |
| if (entry == null) { |
| entry = messageContainer.getFirst(); |
| } else { |
| entry = messageContainer.refresh(entry); |
| if (entry != null) { |
| entry = messageContainer.getNext(entry); |
| } |
| } |
| if (entry != null) { |
| int count = 0; |
| do { |
| ReferenceRecord msg = messageContainer.getValue(entry); |
| if (msg != null ) { |
| if (recoverReference(listener, msg)) { |
| count++; |
| lastBatchId = msg.getMessageId(); |
| } else if (!listener.isDuplicate(new MessageId(msg.getMessageId()))) { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug(destination.getQualifiedName() + " did not recover (will retry) message: " + msg.getMessageId()); |
| } |
| // give usage limits a chance to reclaim |
| break; |
| } else { |
| // skip duplicate and continue |
| if (LOG.isDebugEnabled()) { |
| LOG.debug(destination.getQualifiedName() + " skipping duplicate, " + msg.getMessageId()); |
| } |
| } |
| } else { |
| lastBatchId = null; |
| } |
| batchEntry = entry; |
| entry = messageContainer.getNext(entry); |
| } while (entry != null && count < maxReturned && listener.hasSpace()); |
| } |
| }finally { |
| lock.unlock(); |
| } |
| } |
| |
| public boolean addMessageReference(ConnectionContext context, MessageId messageId, |
| ReferenceData data) throws IOException { |
| |
| boolean uniqueueReferenceAdded = false; |
| lock.lock(); |
| try { |
| if (!isDuplicate(messageId)) { |
| ReferenceRecord record = new ReferenceRecord(messageId.toString(), data); |
| messageContainer.put(messageId, record); |
| uniqueueReferenceAdded = true; |
| addInterest(record); |
| if (LOG.isDebugEnabled()) { |
| LOG.debug(destination.getPhysicalName() + " add: " + messageId); |
| } |
| } |
| } finally { |
| lock.unlock(); |
| } |
| return uniqueueReferenceAdded; |
| } |
| |
| protected boolean isDuplicate(final MessageId messageId) { |
| boolean duplicate = messageContainer.containsKey(messageId); |
| if (!duplicate) { |
| duplicate = dispatchAudit.isDuplicate(messageId); |
| if (duplicate) { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug(destination.getPhysicalName() |
| + " ignoring duplicated (add) message reference, already dispatched: " |
| + messageId); |
| } |
| } |
| } else if (LOG.isDebugEnabled()) { |
| LOG.debug(destination.getPhysicalName() |
| + " ignoring duplicated (add) message reference, already in store: " + messageId); |
| } |
| return duplicate; |
| } |
| |
| public ReferenceData getMessageReference(MessageId identity) throws IOException { |
| lock.lock(); |
| try { |
| ReferenceRecord result = messageContainer.get(identity); |
| if (result == null) { |
| return null; |
| } |
| return result.getData(); |
| }finally { |
| lock.unlock(); |
| } |
| } |
| |
| public void removeMessage(ConnectionContext context, MessageAck ack) throws IOException { |
| lock.lock(); |
| try { |
| MessageId msgId = ack.getLastMessageId(); |
| StoreEntry entry = messageContainer.getEntry(msgId); |
| if (entry != null) { |
| ReferenceRecord rr = messageContainer.remove(msgId); |
| if (rr != null) { |
| removeInterest(rr); |
| if (ack instanceof MessageAckWithLocation) { |
| recordAckFileReferences((MessageAckWithLocation)ack, rr.getData().getFileId()); |
| } |
| dispatchAudit.isDuplicate(msgId); |
| if (LOG.isDebugEnabled()) { |
| LOG.debug(destination.getPhysicalName() + " remove reference: " + msgId); |
| } |
| if (messageContainer.isEmpty() |
| || (lastBatchId != null && lastBatchId.equals(msgId.toString())) |
| || (batchEntry != null && batchEntry.equals(entry))) { |
| resetBatching(); |
| } |
| } |
| } |
| }finally { |
| lock.unlock(); |
| } |
| } |
| |
| private void recordAckFileReferences(MessageAckWithLocation ack, int messageFileId) { |
| adapter.recordAckFileReferences(ack.location.getDataFileId(), messageFileId); |
| } |
| |
| public void removeAllMessages(ConnectionContext context) throws IOException { |
| lock.lock(); |
| try { |
| Set<MessageId> tmpSet = new HashSet<MessageId>(messageContainer.keySet()); |
| MessageAck ack = new MessageAck(); |
| for (MessageId id:tmpSet) { |
| ack.setLastMessageId(id); |
| removeMessage(null, ack); |
| } |
| resetBatching(); |
| messageContainer.clear(); |
| }finally { |
| lock.unlock(); |
| } |
| } |
| |
| public void delete() { |
| lock.lock(); |
| try { |
| messageContainer.clear(); |
| }finally { |
| lock.unlock(); |
| } |
| } |
| |
| public void resetBatching() { |
| lock.lock(); |
| try { |
| batchEntry = null; |
| lastBatchId = null; |
| }finally { |
| lock.unlock(); |
| } |
| } |
| |
| public int getMessageCount() { |
| return messageContainer.size(); |
| } |
| |
| public boolean isSupportForCursors() { |
| return true; |
| } |
| |
| public boolean supportsExternalBatchControl() { |
| return true; |
| } |
| |
| void removeInterest(ReferenceRecord rr) { |
| adapter.removeInterestInRecordFile(rr.getData().getFileId()); |
| } |
| |
| void addInterest(ReferenceRecord rr) { |
| adapter.addInterestInRecordFile(rr.getData().getFileId()); |
| } |
| |
| /** |
| * @param startAfter |
| * @see org.apache.activemq.store.ReferenceStore#setBatch(org.apache.activemq.command.MessageId) |
| */ |
| public void setBatch(MessageId startAfter) { |
| lock.lock(); |
| try { |
| batchEntry = messageContainer.getEntry(startAfter); |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("setBatch: " + startAfter); |
| } |
| } finally { |
| lock.unlock(); |
| } |
| } |
| } |