| /* |
| * |
| * 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.store; |
| |
| import org.apache.commons.configuration.Configuration; |
| import org.apache.log4j.Logger; |
| import org.apache.qpid.AMQException; |
| import org.apache.qpid.framing.AMQShortString; |
| import org.apache.qpid.framing.FieldTable; |
| import org.apache.qpid.framing.abstraction.ContentChunk; |
| import org.apache.qpid.server.queue.MessageMetaData; |
| import org.apache.qpid.server.exchange.Exchange; |
| import org.apache.qpid.server.queue.AMQQueue; |
| import org.apache.qpid.server.virtualhost.VirtualHost; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentMap; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| /** A simple message store that stores the messages in a threadsafe structure in memory. */ |
| public class MemoryMessageStore implements MessageStore |
| { |
| private static final Logger _log = Logger.getLogger(MemoryMessageStore.class); |
| |
| private static final int DEFAULT_HASHTABLE_CAPACITY = 50000; |
| |
| private static final String HASHTABLE_CAPACITY_CONFIG = "hashtable-capacity"; |
| |
| protected ConcurrentMap<Long, MessageMetaData> _metaDataMap; |
| |
| protected ConcurrentMap<Long, List<ContentChunk>> _contentBodyMap; |
| |
| private final AtomicLong _messageId = new AtomicLong(1); |
| private AtomicBoolean _closed = new AtomicBoolean(false); |
| |
| public void configure() |
| { |
| _log.info("Using capacity " + DEFAULT_HASHTABLE_CAPACITY + " for hash tables"); |
| _metaDataMap = new ConcurrentHashMap<Long, MessageMetaData>(DEFAULT_HASHTABLE_CAPACITY); |
| _contentBodyMap = new ConcurrentHashMap<Long, List<ContentChunk>>(DEFAULT_HASHTABLE_CAPACITY); |
| } |
| |
| public void configure(String base, Configuration config) |
| { |
| int hashtableCapacity = config.getInt(base + "." + HASHTABLE_CAPACITY_CONFIG, DEFAULT_HASHTABLE_CAPACITY); |
| _log.info("Using capacity " + hashtableCapacity + " for hash tables"); |
| _metaDataMap = new ConcurrentHashMap<Long, MessageMetaData>(hashtableCapacity); |
| _contentBodyMap = new ConcurrentHashMap<Long, List<ContentChunk>>(hashtableCapacity); |
| } |
| |
| public void configure(VirtualHost virtualHost, String base, Configuration config) throws Exception |
| { |
| configure(base, config); |
| } |
| |
| public void close() throws Exception |
| { |
| _closed.getAndSet(true); |
| if (_metaDataMap != null) |
| { |
| _metaDataMap.clear(); |
| _metaDataMap = null; |
| } |
| if (_contentBodyMap != null) |
| { |
| _contentBodyMap.clear(); |
| _contentBodyMap = null; |
| } |
| } |
| |
| public void removeMessage(StoreContext context, Long messageId) throws AMQException |
| { |
| checkNotClosed(); |
| if (_log.isDebugEnabled()) |
| { |
| _log.debug("Removing message with id " + messageId); |
| } |
| _metaDataMap.remove(messageId); |
| _contentBodyMap.remove(messageId); |
| } |
| |
| public void createExchange(Exchange exchange) throws AMQException |
| { |
| |
| } |
| |
| public void removeExchange(Exchange exchange) throws AMQException |
| { |
| |
| } |
| |
| public void bindQueue(Exchange exchange, AMQShortString routingKey, AMQQueue queue, FieldTable args) throws AMQException |
| { |
| |
| } |
| |
| public void unbindQueue(Exchange exchange, AMQShortString routingKey, AMQQueue queue, FieldTable args) throws AMQException |
| { |
| |
| } |
| |
| |
| public void createQueue(AMQQueue queue) throws AMQException |
| { |
| // Not requred to do anything |
| } |
| |
| public void createQueue(AMQQueue queue, FieldTable arguments) throws AMQException |
| { |
| // Not required to do anything |
| } |
| |
| public void removeQueue(final AMQQueue queue) throws AMQException |
| { |
| // Not required to do anything |
| } |
| |
| public void enqueueMessage(StoreContext context, final AMQQueue queue, Long messageId) throws AMQException |
| { |
| // Not required to do anything |
| } |
| |
| public void dequeueMessage(StoreContext context, final AMQQueue queue, Long messageId) throws AMQException |
| { |
| // Not required to do anything |
| } |
| |
| public void beginTran(StoreContext context) throws AMQException |
| { |
| // Not required to do anything |
| } |
| |
| public void commitTran(StoreContext context) throws AMQException |
| { |
| // Not required to do anything |
| } |
| |
| public void abortTran(StoreContext context) throws AMQException |
| { |
| // Not required to do anything |
| } |
| |
| public boolean inTran(StoreContext context) |
| { |
| return false; |
| } |
| |
| public List<AMQQueue> createQueues() throws AMQException |
| { |
| return null; |
| } |
| |
| public Long getNewMessageId() |
| { |
| return _messageId.getAndIncrement(); |
| } |
| |
| public void storeContentBodyChunk(StoreContext context, Long messageId, int index, ContentChunk contentBody, boolean lastContentBody) |
| throws AMQException |
| { |
| checkNotClosed(); |
| List<ContentChunk> bodyList = _contentBodyMap.get(messageId); |
| |
| if (bodyList == null && lastContentBody) |
| { |
| _contentBodyMap.put(messageId, Collections.singletonList(contentBody)); |
| } |
| else |
| { |
| if (bodyList == null) |
| { |
| bodyList = new ArrayList<ContentChunk>(); |
| _contentBodyMap.put(messageId, bodyList); |
| } |
| |
| bodyList.add(index, contentBody); |
| } |
| } |
| |
| public void storeMessageMetaData(StoreContext context, Long messageId, MessageMetaData messageMetaData) |
| throws AMQException |
| { |
| checkNotClosed(); |
| _metaDataMap.put(messageId, messageMetaData); |
| } |
| |
| public MessageMetaData getMessageMetaData(StoreContext context, Long messageId) throws AMQException |
| { |
| checkNotClosed(); |
| return _metaDataMap.get(messageId); |
| } |
| |
| public ContentChunk getContentBodyChunk(StoreContext context, Long messageId, int index) throws AMQException |
| { |
| checkNotClosed(); |
| List<ContentChunk> bodyList = _contentBodyMap.get(messageId); |
| return bodyList.get(index); |
| } |
| |
| public boolean isPersistent() |
| { |
| return false; |
| } |
| |
| private void checkNotClosed() throws MessageStoreClosedException |
| { |
| if (_closed.get()) |
| { |
| throw new MessageStoreClosedException(); |
| } |
| } |
| } |