| /* |
| * |
| * 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.virtualhost.VirtualHost; |
| import org.apache.qpid.server.exchange.Exchange; |
| import org.apache.qpid.server.queue.AMQQueue; |
| import org.apache.qpid.server.queue.MessageMetaData; |
| |
| import java.util.HashMap; |
| import java.util.Iterator; |
| |
| public class SlowMessageStore implements MessageStore |
| { |
| private static final Logger _logger = Logger.getLogger(SlowMessageStore.class); |
| private static final String DELAYS = "delays"; |
| private HashMap<String, Long> _preDelays = new HashMap<String, Long>(); |
| private HashMap<String, Long> _postDelays = new HashMap<String, Long>(); |
| private long _defaultDelay = 0L; |
| private MessageStore _realStore = new MemoryMessageStore(); |
| private static final String PRE = "pre"; |
| private static final String POST = "post"; |
| private String DEFAULT_DELAY = "default"; |
| |
| public void configure(VirtualHost virtualHost, String base, Configuration config) throws Exception |
| { |
| _logger.info("Starting SlowMessageStore on Virtualhost:" + virtualHost.getName()); |
| Configuration delays = config.subset(base + "." + DELAYS); |
| |
| configureDelays(delays); |
| |
| String messageStoreClass = config.getString(base + ".store.class"); |
| |
| if (delays.containsKey(DEFAULT_DELAY)) |
| { |
| _defaultDelay = delays.getLong(DEFAULT_DELAY); |
| } |
| |
| if (messageStoreClass != null) |
| { |
| Class clazz = Class.forName(messageStoreClass); |
| |
| Object o = clazz.newInstance(); |
| |
| if (!(o instanceof MessageStore)) |
| { |
| throw new ClassCastException("Message store class must implement " + MessageStore.class + ". Class " + clazz + |
| " does not."); |
| } |
| _realStore = (MessageStore) o; |
| _realStore.configure(virtualHost, base + ".store", config); |
| } |
| else |
| { |
| _realStore.configure(virtualHost, base + ".store", config); |
| } |
| } |
| |
| private void configureDelays(Configuration config) |
| { |
| Iterator delays = config.getKeys(); |
| |
| while (delays.hasNext()) |
| { |
| String key = (String) delays.next(); |
| if (key.endsWith(PRE)) |
| { |
| _preDelays.put(key.substring(0, key.length() - PRE.length() - 1), config.getLong(key)); |
| } |
| else if (key.endsWith(POST)) |
| { |
| _postDelays.put(key.substring(0, key.length() - POST.length() - 1), config.getLong(key)); |
| } |
| } |
| } |
| |
| private void doPostDelay(String method) |
| { |
| long delay = lookupDelay(_postDelays, method); |
| doDelay(delay); |
| } |
| |
| private void doPreDelay(String method) |
| { |
| long delay = lookupDelay(_preDelays, method); |
| doDelay(delay); |
| } |
| |
| private long lookupDelay(HashMap<String, Long> delays, String method) |
| { |
| Long delay = delays.get(method); |
| return (delay == null) ? _defaultDelay : delay; |
| } |
| |
| private void doDelay(long delay) |
| { |
| if (delay > 0) |
| { |
| long start = System.nanoTime(); |
| try |
| { |
| |
| Thread.sleep(delay); |
| } |
| catch (InterruptedException e) |
| { |
| _logger.warn("Interrupted : " + e); |
| } |
| |
| long slept = (System.nanoTime() - start) / 1000000; |
| |
| if (slept >= delay) |
| { |
| _logger.info("Done sleep for:" + slept+":"+delay); |
| } |
| else |
| { |
| _logger.info("Only sleep for:" + slept + " re-sleeping"); |
| doDelay(delay - slept); |
| } |
| } |
| } |
| |
| // ***** MessageStore Interface. |
| |
| public void close() throws Exception |
| { |
| doPreDelay("close"); |
| _realStore.close(); |
| doPostDelay("close"); |
| } |
| |
| public void removeMessage(StoreContext storeContext, Long messageId) throws AMQException |
| { |
| doPreDelay("removeMessage"); |
| _realStore.removeMessage(storeContext, messageId); |
| doPostDelay("removeMessage"); |
| } |
| |
| public void createExchange(Exchange exchange) throws AMQException |
| { |
| doPreDelay("createExchange"); |
| _realStore.createExchange(exchange); |
| doPostDelay("createExchange"); |
| } |
| |
| public void removeExchange(Exchange exchange) throws AMQException |
| { |
| doPreDelay("removeExchange"); |
| _realStore.removeExchange(exchange); |
| doPostDelay("removeExchange"); |
| } |
| |
| public void bindQueue(Exchange exchange, AMQShortString routingKey, AMQQueue queue, FieldTable args) throws AMQException |
| { |
| doPreDelay("bindQueue"); |
| _realStore.bindQueue(exchange, routingKey, queue, args); |
| doPostDelay("bindQueue"); |
| } |
| |
| public void unbindQueue(Exchange exchange, AMQShortString routingKey, AMQQueue queue, FieldTable args) throws AMQException |
| { |
| doPreDelay("unbindQueue"); |
| _realStore.unbindQueue(exchange, routingKey, queue, args); |
| doPostDelay("unbindQueue"); |
| } |
| |
| public void createQueue(AMQQueue queue) throws AMQException |
| { |
| createQueue(queue, null); |
| } |
| |
| public void createQueue(AMQQueue queue, FieldTable arguments) throws AMQException |
| { |
| doPreDelay("createQueue"); |
| _realStore.createQueue(queue, arguments); |
| doPostDelay("createQueue"); |
| } |
| |
| public void removeQueue(AMQQueue queue) throws AMQException |
| { |
| doPreDelay("removeQueue"); |
| _realStore.removeQueue(queue); |
| doPostDelay("removeQueue"); |
| } |
| |
| public void enqueueMessage(StoreContext context, AMQQueue queue, Long messageId) throws AMQException |
| { |
| doPreDelay("enqueueMessage"); |
| _realStore.enqueueMessage(context, queue, messageId); |
| doPostDelay("enqueueMessage"); |
| } |
| |
| public void dequeueMessage(StoreContext context, AMQQueue queue, Long messageId) throws AMQException |
| { |
| doPreDelay("dequeueMessage"); |
| _realStore.dequeueMessage(context, queue, messageId); |
| doPostDelay("dequeueMessage"); |
| } |
| |
| public void beginTran(StoreContext context) throws AMQException |
| { |
| doPreDelay("beginTran"); |
| _realStore.beginTran(context); |
| doPostDelay("beginTran"); |
| } |
| |
| public void commitTran(StoreContext context) throws AMQException |
| { |
| doPreDelay("commitTran"); |
| _realStore.commitTran(context); |
| doPostDelay("commitTran"); |
| } |
| |
| public void abortTran(StoreContext context) throws AMQException |
| { |
| doPreDelay("abortTran"); |
| _realStore.abortTran(context); |
| doPostDelay("abortTran"); |
| } |
| |
| public boolean inTran(StoreContext context) |
| { |
| doPreDelay("inTran"); |
| boolean b = _realStore.inTran(context); |
| doPostDelay("inTran"); |
| return b; |
| } |
| |
| public Long getNewMessageId() |
| { |
| doPreDelay("getNewMessageId"); |
| Long l = _realStore.getNewMessageId(); |
| doPostDelay("getNewMessageId"); |
| return l; |
| } |
| |
| public void storeContentBodyChunk(StoreContext context, Long messageId, int index, ContentChunk contentBody, boolean lastContentBody) throws AMQException |
| { |
| doPreDelay("storeContentBodyChunk"); |
| _realStore.storeContentBodyChunk(context, messageId, index, contentBody, lastContentBody); |
| doPostDelay("storeContentBodyChunk"); |
| } |
| |
| public void storeMessageMetaData(StoreContext context, Long messageId, MessageMetaData messageMetaData) throws AMQException |
| { |
| doPreDelay("storeMessageMetaData"); |
| _realStore.storeMessageMetaData(context, messageId, messageMetaData); |
| doPostDelay("storeMessageMetaData"); |
| } |
| |
| public MessageMetaData getMessageMetaData(StoreContext context, Long messageId) throws AMQException |
| { |
| doPreDelay("getMessageMetaData"); |
| MessageMetaData mmd = _realStore.getMessageMetaData(context, messageId); |
| doPostDelay("getMessageMetaData"); |
| return mmd; |
| } |
| |
| public ContentChunk getContentBodyChunk(StoreContext context, Long messageId, int index) throws AMQException |
| { |
| doPreDelay("getContentBodyChunk"); |
| ContentChunk c = _realStore.getContentBodyChunk(context, messageId, index); |
| doPostDelay("getContentBodyChunk"); |
| return c; |
| } |
| |
| public boolean isPersistent() |
| { |
| return _realStore.isPersistent(); |
| } |
| |
| } |