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Removed the HandlerEndpoint (now replaced by SimpleEndpoint).

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This commit is contained in:
Mark Fisher
2008-08-13 15:49:24 +00:00
parent a3f6254856
commit e16dce8aba
6 changed files with 35 additions and 185 deletions
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150
org.springframework.integration/src/main/java/org/springframework/integration/endpoint/HandlerEndpoint.java
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@@ -1,150 +0,0 @@
/*
* Copyright 2002-2008 the original author or authors.
*
* Licensed 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.springframework.integration.endpoint;
import org.springframework.integration.channel.ChannelRegistry;
import org.springframework.integration.channel.ChannelRegistryAware;
import org.springframework.integration.handler.MessageHandler;
import org.springframework.integration.message.BlockingTarget;
import org.springframework.integration.message.Message;
import org.springframework.integration.message.MessageBuilder;
import org.springframework.integration.message.MessageDeliveryException;
import org.springframework.integration.message.MessageHandlingException;
import org.springframework.integration.message.MessageHeaders;
import org.springframework.integration.message.MessageTarget;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* Implementation of the {@link MessageEndpoint} interface for invoking
* {@link MessageHandler MessageHandlers}.
*
* @author Mark Fisher
*/
public class HandlerEndpoint extends AbstractEndpoint {
private volatile MessageHandler handler;
private volatile long replyTimeout = 1000;
private volatile boolean returnAddressOverrides = false;
public HandlerEndpoint(MessageHandler handler) {
Assert.notNull(handler, "handler must not be null");
this.handler = handler;
}
public MessageHandler getHandler() {
return this.handler;
}
/**
* Set the timeout in milliseconds to be enforced when this endpoint sends a
* reply message. If the message is not sent successfully within the
* allotted time, then a MessageDeliveryException will be thrown.
* The default <code>replyTimeout</code> value is 1000 milliseconds.
*/
public void setReplyTimeout(long replyTimeout) {
this.replyTimeout = replyTimeout;
}
public void setReturnAddressOverrides(boolean returnAddressOverrides) {
this.returnAddressOverrides = returnAddressOverrides;
}
public void initialize() {
Assert.notNull(this.handler, "handler must not be null");
if (this.handler instanceof ChannelRegistryAware) {
((ChannelRegistryAware) this.handler).setChannelRegistry(this.getChannelRegistry());
}
super.initialize();
}
private MessageTarget resolveReturnAddress(Message<?> originalMessage) {
if (this.returnAddressOverrides) {
MessageTarget target = this.getReturnAddress(originalMessage);
if (target == null) {
target = this.getTarget();
}
return target;
}
else {
MessageTarget target = this.getTarget();
if (target == null) {
target = this.getReturnAddress(originalMessage);
}
return target;
}
}
private MessageTarget getReturnAddress(Message<?> originalMessage) {
Object returnAddress = originalMessage.getHeaders().getReturnAddress();
if (returnAddress != null) {
if (returnAddress instanceof MessageTarget) {
return (MessageTarget) returnAddress;
}
ChannelRegistry registry = this.getChannelRegistry();
if (returnAddress instanceof String && registry != null) {
String channelName = (String) returnAddress;
if (StringUtils.hasText(channelName)) {
return registry.lookupChannel(channelName);
}
}
}
return null;
}
@Override
protected Message<?> handleMessage(Message<?> message) {
Message<?> replyMessage = this.handler.handle(message);
if (replyMessage != null) {
Object correlationId = replyMessage.getHeaders().getCorrelationId();
if (correlationId == null) {
replyMessage = MessageBuilder.fromMessage(replyMessage)
.setHeader(MessageHeaders.CORRELATION_ID, message.getHeaders().getId()).build();
}
if (replyMessage != null) {
MessageTarget returnAddress = resolveReturnAddress(replyMessage);
if (returnAddress == null) {
returnAddress = resolveReturnAddress(message);
if (returnAddress == null) {
throw new MessageHandlingException(replyMessage, "Unable to determine return address for message. " +
"Provide an 'outputChannelName' on the message endpoint or a 'returnAddress' in the message header");
}
}
this.sendReplyMessage(replyMessage, returnAddress);
}
}
return null;
}
private void sendReplyMessage(Message<?> replyMessage, MessageTarget returnAddress) {
if (logger.isDebugEnabled()) {
logger.debug("endpoint '" + HandlerEndpoint.this + "' replying to target '" + returnAddress + "' with message: " + replyMessage);
}
boolean sent = (this.replyTimeout >= 0 && returnAddress instanceof BlockingTarget)
? ((BlockingTarget) returnAddress).send(replyMessage, this.replyTimeout)
: returnAddress.send(replyMessage);
if (!sent) {
throw new MessageDeliveryException(replyMessage,
"unable to send reply message within allotted timeout of " + this.replyTimeout + " milliseconds");
}
}
}