Spring/spring-integration
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Added Poller interface and SimplePoller implementation.

Browse Source
This commit is contained in:
Mark Fisher
2008-07-14 12:38:05 +00:00
parent 5993be4d6c
commit 4dd443e6c8
2 changed files with 93 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
org.springframework.integration/src/main/java/org/springframework/integration/message/Poller.java Normal file
View File

@@ -0,0 +1,29 @@
/*
* 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.message;
/**
* Strategy interface for polling a {@link MessageSource} and passing
* any Messages received from that source to a {@link MessageTarget}.
*
* @author Mark Fisher
*/
public interface Poller {
int poll(MessageSource<?> source, MessageTarget target);
}

64
org.springframework.integration/src/main/java/org/springframework/integration/message/SimplePoller.java Normal file
View File

@@ -0,0 +1,64 @@
/*
* 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.message;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* @author Mark Fisher
*/
public class SimplePoller implements Poller {
private final Log logger = LogFactory.getLog(this.getClass());
private long receiveTimeout = 5000;
private long sendTimeout = -1;
public void setReceiveTimeout(long receiveTimeout) {
this.receiveTimeout = receiveTimeout;
}
public void setSendTimeout(long sendTimeout) {
this.sendTimeout = sendTimeout;
}
public int poll(MessageSource<?> source, MessageTarget target) {
Message<?> message = (source instanceof BlockingSource && this.receiveTimeout >= 0) ?
((BlockingSource<?>) source).receive(this.receiveTimeout) : source.receive();
if (message == null) {
if (logger.isDebugEnabled()) {
logger.debug("received no Message from source '" + source + "'");
}
return 0;
}
boolean sent = (target instanceof BlockingTarget && this.sendTimeout >= 0) ?
((BlockingTarget) target).send(message, this.sendTimeout) : target.send(message);
if (source instanceof MessageDeliveryAware) {
if (sent) {
((MessageDeliveryAware) source).onSend(message);
}
else {
((MessageDeliveryAware) source).onFailure(new MessageDeliveryException(message, "failed to send message"));
}
}
return (sent ? 1 : 0);
}
}