diff options
Diffstat (limited to 'qpid/java/broker/src/main/java/org/apache/qpid/server/store/MemoryMessageStore.java')
-rw-r--r-- | qpid/java/broker/src/main/java/org/apache/qpid/server/store/MemoryMessageStore.java | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/qpid/java/broker/src/main/java/org/apache/qpid/server/store/MemoryMessageStore.java b/qpid/java/broker/src/main/java/org/apache/qpid/server/store/MemoryMessageStore.java new file mode 100644 index 0000000000..4691f02952 --- /dev/null +++ b/qpid/java/broker/src/main/java/org/apache/qpid/server/store/MemoryMessageStore.java @@ -0,0 +1,235 @@ +/* + * + * 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.configuration.VirtualHostConfiguration; +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, VirtualHostConfiguration config) + { + int hashtableCapacity = config.getStoreConfiguration().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, VirtualHostConfiguration 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(); + } + } +} |