@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
if (handshakeComplete) {
super.messageReceived(ctx, e);
} else {
if (e.getMessage() instanceof ChannelBuffer) {
ChannelBuffer newBuffer = (ChannelBuffer) e.getMessage();
buffered = ChannelBuffers.copiedBuffer(buffered, newBuffer);
if (buffered.readableBytes() < 8) {
return;
}
int payloadLength = buffered.getInt(0);
int revision = buffered.getInt(4);
boolean handshakeSuccessful = false;
if (revision == 1 || revision == -1) {
if (buffered.readableBytes() < payloadLength + 4) {
return;
}
buffered.skipBytes(8);
if (revision == 1) {
handshakeSuccessful = handleRevision1Response(ctx, payloadLength);
} else {
handshakeSuccessful = handleGenericResponse(ctx, payloadLength);
}
} else {
handshakeSuccessful = handleUnknownRevisionResponse(ctx);
}
if (!handshakeSuccessful) {
ctx.getChannel().close();
}
if (keepAliveInterval.millis() > 0) {
ctx.getPipeline()
.addBefore(
ctx.getName(),
"found-connection-keep-alive",
new ConnectionKeepAliveHandler(scheduler, keepAliveInterval));
}
handshakeComplete = true;
ChannelBuffer remaining = buffered.slice();
if (remaining.readableBytes() > 0) {
ctx.sendUpstream(
new UpstreamMessageEvent(
ctx.getChannel(), remaining, ctx.getChannel().getRemoteAddress()));
}
ctx.getPipeline().remove(this);
}
}
}
@Override
protected Object decode(ChannelHandlerContext ctx, Channel channel, ChannelBuffer buffer)
throws Exception {
// wait for prefix
if (buffer.readableBytes() < 4) {
return null;
}
int length = buffer.getInt(buffer.readerIndex());
// wait for the complete event
if (buffer.readableBytes() < length + 4) {
return null;
}
// skip package length header
buffer.skipBytes(4);
// decode
int typeLength = buffer.readInt();
String type = buffer.toString(buffer.readerIndex(), typeLength, "UTF-8");
int eventLength = length - typeLength;
byte[] eventBytes = new byte[eventLength];
buffer.skipBytes(typeLength);
buffer.readBytes(eventBytes);
return new Event(type, eventBytes);
}
@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
Object m = e.getMessage();
if (!(m instanceof ChannelBuffer)) {
ctx.sendUpstream(e);
return;
}
ChannelBuffer buffer = (ChannelBuffer) m;
int size = buffer.getInt(buffer.readerIndex() - 4);
transportServiceAdapter.received(size + 6);
// we have additional bytes to read, outside of the header
boolean hasMessageBytesToRead = (size - (NettyHeader.HEADER_SIZE - 6)) != 0;
int markedReaderIndex = buffer.readerIndex();
int expectedIndexReader = markedReaderIndex + size;
// netty always copies a buffer, either in NioWorker in its read handler, where it copies to a
// fresh
// buffer, or in the cumlation buffer, which is cleaned each time
StreamInput streamIn = ChannelBufferStreamInputFactory.create(buffer, size);
long requestId = buffer.readLong();
byte status = buffer.readByte();
Version version = Version.fromId(buffer.readInt());
StreamInput wrappedStream;
if (TransportStatus.isCompress(status) && hasMessageBytesToRead && buffer.readable()) {
Compressor compressor = CompressorFactory.compressor(buffer);
if (compressor == null) {
int maxToRead = Math.min(buffer.readableBytes(), 10);
int offset = buffer.readerIndex();
StringBuilder sb =
new StringBuilder("stream marked as compressed, but no compressor found, first [")
.append(maxToRead)
.append("] content bytes out of [")
.append(buffer.readableBytes())
.append("] readable bytes with message size [")
.append(size)
.append("] ")
.append("] are [");
for (int i = 0; i < maxToRead; i++) {
sb.append(buffer.getByte(offset + i)).append(",");
}
sb.append("]");
throw new ElasticsearchIllegalStateException(sb.toString());
}
wrappedStream = CachedStreamInput.cachedHandlesCompressed(compressor, streamIn);
} else {
wrappedStream = CachedStreamInput.cachedHandles(streamIn);
}
wrappedStream.setVersion(version);
if (TransportStatus.isRequest(status)) {
String action = handleRequest(ctx.getChannel(), wrappedStream, requestId, version);
if (buffer.readerIndex() != expectedIndexReader) {
if (buffer.readerIndex() < expectedIndexReader) {
logger.warn(
"Message not fully read (request) for [{}] and action [{}], resetting",
requestId,
action);
} else {
logger.warn(
"Message read past expected size (request) for [{}] and action [{}], resetting",
requestId,
action);
}
buffer.readerIndex(expectedIndexReader);
}
} else {
TransportResponseHandler handler = transportServiceAdapter.remove(requestId);
// ignore if its null, the adapter logs it
if (handler != null) {
if (TransportStatus.isError(status)) {
handlerResponseError(wrappedStream, handler);
} else {
handleResponse(ctx.getChannel(), wrappedStream, handler);
}
} else {
// if its null, skip those bytes
buffer.readerIndex(markedReaderIndex + size);
}
if (buffer.readerIndex() != expectedIndexReader) {
if (buffer.readerIndex() < expectedIndexReader) {
logger.warn(
"Message not fully read (response) for [{}] handler {}, error [{}], resetting",
requestId,
handler,
TransportStatus.isError(status));
} else {
logger.warn(
"Message read past expected size (response) for [{}] handler {}, error [{}], resetting",
requestId,
handler,
TransportStatus.isError(status));
}
buffer.readerIndex(expectedIndexReader);
}
}
wrappedStream.close();
}