Moved MessageStore, SimpleMessageStore, and MessageStoringInterceptor to the sandbox.
This commit is contained in:
Mark Fisher
@@ -1,95 +0,0 @@
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/*
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* Copyright 2002-2008 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.integration.channel.interceptor;
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import java.util.List;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.springframework.integration.channel.ChannelInterceptor;
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import org.springframework.integration.core.Message;
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import org.springframework.integration.core.MessageChannel;
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import org.springframework.integration.core.MessagingException;
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import org.springframework.integration.message.MessageStore;
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import org.springframework.util.Assert;
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/**
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* A {@link ChannelInterceptor} that delegates to a {@link MessageStore}.
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* Upon sending to the channel, the message will be added to the store,
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* and upon receiving from the channel, the message will be removed from
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* the store.
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*
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* @author Mark Fisher
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*/
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public class MessageStoringInterceptor extends ChannelInterceptorAdapter {
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private final Log logger = LogFactory.getLog(this.getClass());
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private final MessageStore messageStore;
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private volatile boolean initialized;
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private final Object initializationMonitor = new Object();
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public MessageStoringInterceptor(MessageStore messageStore) {
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Assert.notNull(messageStore, "MessageStore must not be null");
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this.messageStore = messageStore;
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}
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@Override
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public Message<?> preSend(Message<?> message, MessageChannel channel) {
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if (message != null) {
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this.messageStore.put(message.getHeaders().getId(), message);
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}
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return message;
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}
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@Override
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public boolean preReceive(MessageChannel channel) {
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synchronized (this.initializationMonitor) {
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if (!this.initialized) {
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if (logger.isDebugEnabled()) {
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logger.debug("pre-loading Messages from MessageStore for channel '" + channel.getName() + "'");
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}
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List<Message<?>> storedMessages = this.messageStore.list();
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for (Message<?> message : storedMessages) {
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boolean sent = channel.send(message, 0);
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if (!sent) {
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throw new MessagingException("failed to initialize channel from MessageStore");
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}
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}
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if (logger.isDebugEnabled()) {
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logger.debug("pre-loaded " + storedMessages.size() + " Messages for channel '" + channel.getName() + "'");
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}
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}
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this.initialized = true;
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}
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return true;
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}
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@Override
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public Message<?> postReceive(Message<?> message, MessageChannel channel) {
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if (message != null) {
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this.messageStore.remove(message.getHeaders().getId());
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}
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return message;
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}
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}
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@@ -1,40 +0,0 @@
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/*
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* Copyright 2002-2008 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.integration.message;
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import java.util.List;
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import org.springframework.integration.core.Message;
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/**
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* Strategy interface for storing and retrieving messages.
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*
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* @author Mark Fisher
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*/
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public interface MessageStore {
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Message<?> put(Object key, Message<?> message);
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Message<?> get(Object key);
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Message<?> remove(Object key);
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List<Message<?>> list();
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int size();
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}
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@@ -1,64 +0,0 @@
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/*
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* Copyright 2002-2008 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.integration.message;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Map;
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import org.springframework.integration.core.Message;
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import org.springframework.integration.util.BoundedHashMap;
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import org.springframework.util.Assert;
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/**
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* Map-based implementation of {@link MessageStore} that enforces capacity.
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*
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* @author Mark Fisher
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*/
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public class SimpleMessageStore implements MessageStore {
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private final Map<Object, Message<?>> map;
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public SimpleMessageStore(int capacity) {
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this.map = new BoundedHashMap<Object, Message<?>>(capacity);
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}
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public Message<?> put(Object key, Message<?> message) {
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Assert.notNull(key, "'key' must not be null");
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Assert.notNull(message, "'message' must not be null");
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return this.map.put(key, message);
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}
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public Message<?> get(Object key) {
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return (key != null) ? this.map.get(key) : null;
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}
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public List<Message<?>> list() {
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return new ArrayList<Message<?>>(this.map.values());
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}
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public Message<?> remove(Object key) {
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return (key != null) ? this.map.remove(key) : null;
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}
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public int size() {
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return this.map.size();
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}
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}
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