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/*
* Copyright (c) 2015 Uber Technologies, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.uber.tchannel.handlers;
import com.uber.tchannel.channels.PeerManager;
import com.uber.tchannel.codecs.MessageCodec;
import com.uber.tchannel.codecs.TFrame;
import com.uber.tchannel.errors.ErrorType;
import com.uber.tchannel.frames.Frame;
import com.uber.tchannel.frames.InitFrame;
import com.uber.tchannel.frames.InitRequestFrame;
import com.uber.tchannel.frames.InitResponseFrame;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import static com.uber.tchannel.frames.ErrorFrame.sendError;
public class InitRequestHandler extends SimpleChannelInboundHandler {
private final PeerManager peerManager;
public InitRequestHandler(PeerManager peerManager) {
this.peerManager = peerManager;
}
@Override
public void messageReceived(ChannelHandlerContext ctx, ByteBuf buf) throws Exception {
Frame frame = MessageCodec.decode(
MessageCodec.decode(buf)
);
switch (frame.getType()) {
case InitRequest:
InitRequestFrame initRequestFrameMessage = (InitRequestFrame) frame;
if (initRequestFrameMessage.getVersion() == InitFrame.DEFAULT_VERSION) {
InitResponseFrame initResponseFrame = new InitResponseFrame(
initRequestFrameMessage.getId(),
InitFrame.DEFAULT_VERSION
);
initResponseFrame.setHostPort(this.peerManager.getHostPort());
// TODO: figure out what to put here
initResponseFrame.setProcessName("java-process");
MessageCodec.write(ctx, initResponseFrame);
ctx.pipeline().remove(this);
peerManager.setIdentified(ctx.channel(), initRequestFrameMessage.getHeaders());
} else {
sendError(ErrorType.FatalProtocolError,
String.format("Expected Protocol version: %d, got version: %d", InitFrame.DEFAULT_VERSION,
initRequestFrameMessage.getVersion()),
frame.getId(), ctx);
}
break;
default:
sendError(ErrorType.FatalProtocolError,
"The first frame should be an Init Request",
frame.getId(), ctx);
break;
}
}
}
