AeroflexCodecFactory.java
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package com.example.mina.box.aeroflex;
import com.example.mina.util.StrUtil;
import org.apache.mina.core.buffer.IoBuffer;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.filter.codec.*;
/**
* @author 杜云山
* @date 20/07/07
*/
public class AeroflexCodecFactory implements ProtocolCodecFactory {
@Override
public ProtocolEncoder getEncoder(IoSession session) {
return new AeroflexMessageEncoder();
}
@Override
public ProtocolDecoder getDecoder(IoSession session) {
return new AeroflexMessageDecoder();
}
static class AeroflexMessageEncoder implements ProtocolEncoder {
@Override
public void encode(IoSession session, Object message, ProtocolEncoderOutput out) {
if (message instanceof AeroflexResponseMessage) {
byte[] result = ((AeroflexResponseMessage) message).getResult();
session.write(IoBuffer.wrap(result));
}
}
@Override
public void dispose(IoSession session) {
}
}
static class AeroflexMessageDecoder implements ProtocolDecoder {
@Override
public void decode(IoSession session, IoBuffer in, ProtocolDecoderOutput out) throws Exception {
byte[] bytes = new byte[in.limit()];
in.get(bytes);
AeroflexRequestMessage requestMessage = getAeroflexRequestMessage(bytes);
out.write(requestMessage);
}
private AeroflexRequestMessage getAeroflexRequestMessage(byte[] bytes) {
String cmd = new String(bytes).trim();
AeroflexRequestMessage requestMessage = AeroflexRequestMessage.builder()
.cmd(cmd)
.build();
// eg: "ATTN ALL MAX"
if (cmd.startsWith(AeroflexRequestMessage.SET_ALL)) {
requestMessage.setRequestSetAllMax(true);
return requestMessage;
}
// eg: "ATTN? 1"
if (cmd.startsWith(AeroflexRequestMessage.GET_ONE)) {
// eg: ["ATTN?", "1"]
String[] sss = cmd.split(AeroflexRequestMessage.SPACE_SPLIT);
if (sss.length < 2) {
requestMessage.setHasError(true);
return requestMessage;
}
int row = StrUtil.toInt(sss[1]);
requestMessage.setRequestGetOne(true);
requestMessage.setRequestGetOneRow(row);
return requestMessage;
}
// eg: "ATTN 2 3;"
if (cmd.startsWith(AeroflexRequestMessage.SET_ONE)) {
// eg: ["ATTN 2 3"]
String[] aa = cmd.split(AeroflexRequestMessage.SEMICOLON_SPLIT);
// eg: ["ATTN", "2", "3"]
String[] sss = aa[0].split(AeroflexRequestMessage.SPACE_SPLIT);
if (sss.length < 3) {
requestMessage.setHasError(true);
return requestMessage;
}
int row = StrUtil.toInt(sss[1]);
int val = StrUtil.toInt(sss[2]);
requestMessage.setRequestSetOne(true);
requestMessage.setRequestSetOneRow(row);
requestMessage.setRequestSetOneValue(val);
return requestMessage;
}
requestMessage.setHasError(true);
return requestMessage;
}
@Override
public void finishDecode(IoSession session, ProtocolDecoderOutput out) throws Exception {
}
@Override
public void dispose(IoSession session) throws Exception {
}
}
}