@Override
protected void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
RequestWrapper request = (RequestWrapper) msg;
long beginTime = System.currentTimeMillis();
ResponseWrapper responseWrapper =
ProtocolFactory.getServerHandler(request.getProtocolType()).handleRequest(request);
final int id = request.getId();
// already timeout,so not return
if ((System.currentTimeMillis() - beginTime) >= request.getTimeout()) {
LOGGER.warn(
"timeout,so give up send response to client,requestId is:"
+ id
+ ",client is:"
+ ctx.channel().remoteAddress()
+ ",consumetime is:"
+ (System.currentTimeMillis() - beginTime)
+ ",timeout is:"
+ request.getTimeout());
return;
}
ChannelFuture wf = ctx.channel().writeAndFlush(responseWrapper);
wf.addListener(
new ChannelFutureListener() {
public void operationComplete(ChannelFuture future) throws Exception {
if (!future.isSuccess()) {
LOGGER.error("server write response error,request id is: " + id);
}
}
});
}
public Object decode(ByteBufferWrapper wrapper, Object errorObject, int... originPosArray)
throws Exception {
final int originPos;
if (originPosArray != null && originPosArray.length == 1) {
originPos = originPosArray[0];
} else {
originPos = wrapper.readerIndex();
}
if (wrapper.readableBytes() < CUSTOMPROTOCOL_HEADER_LEN) {
wrapper.setReaderIndex(originPos);
return errorObject;
}
byte version = wrapper.readByte();
if (version == (byte) 1) {
byte type = wrapper.readByte();
int codecType = wrapper.readByte();
wrapper.readByte();
wrapper.readByte();
wrapper.readByte();
int requestId = wrapper.readInt();
int timeout = wrapper.readInt();
int classNameLen = wrapper.readInt();
int bodyLen = wrapper.readInt();
if (wrapper.readableBytes() < bodyLen + classNameLen) {
wrapper.setReaderIndex(originPos);
return errorObject;
}
byte[] classNameByte = null;
if (codecType == Codecs.PB_CODEC) {
classNameByte = new byte[classNameLen];
wrapper.readBytes(classNameByte);
}
byte[] body = new byte[bodyLen];
wrapper.readBytes(body);
int messageLen =
ProtocolUtils.HEADER_LEN + CUSTOMPROTOCOL_HEADER_LEN + classNameLen + bodyLen;
if (type == REQUEST) {
RequestWrapper requestWrapper =
new RequestWrapper(body, timeout, requestId, codecType, TYPE);
requestWrapper.setMessageLen(messageLen);
requestWrapper.setArgTypes(new byte[][] {classNameByte});
return requestWrapper;
} else if (type == RESPONSE) {
ResponseWrapper responseWrapper = new ResponseWrapper(requestId, codecType, TYPE);
responseWrapper.setResponse(body);
responseWrapper.setMessageLen(messageLen);
responseWrapper.setResponseClassName(classNameByte);
return responseWrapper;
} else {
throw new UnsupportedOperationException("protocol type : " + type + " is not supported!");
}
} else {
throw new UnsupportedOperationException(
"protocol version :" + version + " is not supported!");
}
}
@SuppressWarnings("rawtypes")
private void sendErrorResponse(final IoSession session, final RequestWrapper request) {
ResponseWrapper responseWrapper =
new ResponseWrapper(request.getId(), request.getCodecType(), request.getProtocolType());
responseWrapper.setException(
new Exception("server threadpool full,maybe because server is slow or too many requests"));
WriteFuture wf = session.write(responseWrapper);
wf.addListener(
new IoFutureListener() {
public void operationComplete(IoFuture future) {
if (!((WriteFuture) future).isWritten()) {
LOGGER.error("server write response error,request id is: " + request.getId());
}
}
});
}
@SuppressWarnings("rawtypes")
public void run() {
// pipeline
if (message instanceof List) {
List messages = (List) message;
for (Object messageObject : messages) {
threadPool.execute(new HandlerRunnable(session, messageObject, threadPool));
}
} else {
RequestWrapper request = (RequestWrapper) message;
long beginTime = System.currentTimeMillis();
ResponseWrapper responseWrapper =
ProtocolFactory.getServerHandler(request.getProtocolType()).handleRequest(request);
final int id = request.getId();
// already timeout,so not return
if ((System.currentTimeMillis() - beginTime) >= request.getTimeout()) {
LOGGER.warn(
"timeout,so give up send response to client,requestId is:"
+ id
+ ",client is:"
+ session.getRemoteAddress()
+ ",consumetime is:"
+ (System.currentTimeMillis() - beginTime)
+ ",timeout is:"
+ request.getTimeout());
return;
}
WriteFuture wf = session.write(responseWrapper);
wf.addListener(
new IoFutureListener() {
public void operationComplete(IoFuture future) {
if (!((WriteFuture) future).isWritten()) {
LOGGER.error("server write response error,request id is: " + id);
}
}
});
}
}
public ByteBufferWrapper encode(Object message, ByteBufferWrapper bytebufferWrapper)
throws Exception {
if (!(message instanceof RequestWrapper) && !(message instanceof ResponseWrapper)) {
throw new Exception("only support send RequestWrapper && ResponseWrapper");
}
int id = 0;
byte type = REQUEST;
byte[] body = null;
int timeout = 0;
int codecType = 0;
byte[] className = null;
if (message instanceof RequestWrapper) {
try {
RequestWrapper wrapper = (RequestWrapper) message;
codecType = wrapper.getCodecType();
body = Codecs.getEncoder(codecType).encode(wrapper.getMessage());
id = wrapper.getId();
timeout = wrapper.getTimeout();
if (codecType == Codecs.PB_CODEC)
className = wrapper.getMessage().getClass().getName().getBytes();
} catch (Exception e) {
LOGGER.error("encode request object error", e);
throw e;
}
} else {
ResponseWrapper wrapper = (ResponseWrapper) message;
try {
codecType = wrapper.getCodecType();
body = Codecs.getEncoder(codecType).encode(wrapper.getResponse());
id = wrapper.getRequestId();
if (codecType == Codecs.PB_CODEC)
className = wrapper.getResponse().getClass().getName().getBytes();
} catch (Exception e) {
LOGGER.error("encode response object error", e);
// still create response,so client can get it
wrapper.setResponse(new Exception("encode response object error", e));
if (codecType == Codecs.PB_CODEC) className = Exception.class.getName().getBytes();
body = Codecs.getEncoder(wrapper.getCodecType()).encode(wrapper.getResponse());
}
type = RESPONSE;
}
int capacity = ProtocolUtils.HEADER_LEN + CUSTOMPROTOCOL_HEADER_LEN + body.length;
if (codecType == Codecs.PB_CODEC) {
capacity += className.length;
}
ByteBufferWrapper byteBuffer = bytebufferWrapper.get(capacity);
byteBuffer.writeByte(ProtocolUtils.CURRENT_VERSION);
byteBuffer.writeByte((byte) TYPE);
byteBuffer.writeByte(VERSION);
byteBuffer.writeByte(type);
byteBuffer.writeByte((byte) codecType);
byteBuffer.writeByte((byte) 0);
byteBuffer.writeByte((byte) 0);
byteBuffer.writeByte((byte) 0);
byteBuffer.writeInt(id);
byteBuffer.writeInt(timeout);
if (codecType == Codecs.PB_CODEC) {
byteBuffer.writeInt(className.length);
} else {
byteBuffer.writeInt(0);
}
byteBuffer.writeInt(body.length);
if (codecType == Codecs.PB_CODEC) byteBuffer.writeBytes(className);
byteBuffer.writeBytes(body);
return byteBuffer;
}
