/*
* 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.mina.example.sumup;
import org.apache.mina.core.service.IoHandler;
import org.apache.mina.core.service.IoHandlerAdapter;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.example.sumup.message.AddMessage;
import org.apache.mina.example.sumup.message.ResultMessage;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* {@link IoHandler} for SumUp client.
*
* @author The Apache MINA Project (dev@mina.apache.org)
* @version $Rev: 713957 $, $Date: 2008-11-14 10:27:16 +0100 (Fri, 14 Nov 2008) $
*/
public class ClientSessionHandler extends IoHandlerAdapter {
private final Logger logger = LoggerFactory.getLogger(getClass());
private final int[] values;
private boolean finished;
public ClientSessionHandler(int[] values) {
this.values = values;
}
public boolean isFinished() {
return finished;
}
@Override
public void sessionOpened(IoSession session) {
// send summation requests
for (int i = 0; i < values.length; i++) {
AddMessage m = new AddMessage();
m.setSequence(i);
m.setValue(values[i]);
session.write(m);
}
}
@Override
public void messageReceived(IoSession session, Object message) {
// server only sends ResultMessage. otherwise, we will have to identify
// its type using instanceof operator.
ResultMessage rm = (ResultMessage) message;
if (rm.isOk()) {
// server returned OK code.
// if received the result message which has the last sequence
// number,
// it is time to disconnect.
if (rm.getSequence() == values.length - 1) {
// print the sum and disconnect.
logger.info("The sum: " + rm.getValue());
session.close(true);
finished = true;
}
} else {
// seever returned error code because of overflow, etc.
logger.warn("Server error, disconnecting...");
session.close(true);
finished = true;
}
}
@Override
public void exceptionCaught(IoSession session, Throwable cause) {
session.close(true);
}
}