/**
* Process server response:
*
* <pre>
* HTTP/1.1 101 WebSocket Protocol Handshake
* Upgrade: WebSocket
* Connection: Upgrade
* Sec-WebSocket-Origin: http://example.com
* Sec-WebSocket-Location: ws://example.com/demo
* Sec-WebSocket-Protocol: sample
*
* 8jKS'y:G*Co,Wxa-
* </pre>
*
* @param ctx Channel context
* @param response HTTP response returned from the server for the request sent by
* beginOpeningHandshake00().
* @throws WebSocketHandshakeException
*/
@Override
public void endOpeningHandshake(ChannelHandlerContext ctx, HttpResponse response)
throws WebSocketHandshakeException {
final HttpResponseStatus status = new HttpResponseStatus(101, "WebSocket Protocol Handshake");
if (!response.getStatus().equals(status)) {
throw new WebSocketHandshakeException(
"Invalid handshake response status: " + response.getStatus());
}
String upgrade = response.getHeader(Names.UPGRADE);
if (upgrade == null || !upgrade.equals(Values.WEBSOCKET)) {
throw new WebSocketHandshakeException(
"Invalid handshake response upgrade: " + response.getHeader(Names.UPGRADE));
}
String connection = response.getHeader(Names.CONNECTION);
if (connection == null || !connection.equals(Values.UPGRADE)) {
throw new WebSocketHandshakeException(
"Invalid handshake response connection: " + response.getHeader(Names.CONNECTION));
}
byte[] challenge = response.getContent().array();
if (!Arrays.equals(challenge, expectedChallengeResponseBytes)) {
throw new WebSocketHandshakeException("Invalid challenge");
}
String protocol = response.getHeader(Names.SEC_WEBSOCKET_PROTOCOL);
this.setSubProtocolResponse(protocol);
ctx.getPipeline().replace("decoder", "ws-decoder", new WebSocket00FrameDecoder());
this.setOpenningHandshakeCompleted(true);
return;
}
public static void send(HttpResponse response, Channel channel, @Nullable HttpRequest request) {
ChannelBuffer content = response.getContent();
setContentLength(
response, content == ChannelBuffers.EMPTY_BUFFER ? 0 : content.readableBytes());
boolean keepAlive = request != null && addKeepAliveIfNeed(response, request);
addCommonHeaders(response);
send(response, channel, !keepAlive);
}
private void sendHttpResponse(ChannelHandlerContext ctx, HttpRequest req, HttpResponse res) {
// Generate an error page if response status code is not OK (200).
if (res.getStatus().getCode() != 200) {
res.setContent(ChannelBuffers.copiedBuffer(res.getStatus().toString(), CharsetUtil.UTF_8));
setContentLength(res, res.getContent().readableBytes());
}
// Send the response and close the connection if necessary.
ChannelFuture f = ctx.getChannel().write(res);
if (!isKeepAlive(req) || res.getStatus().getCode() != 200) {
f.addListener(ChannelFutureListener.CLOSE);
}
}
/*
* 私有函数，服务器发送响应给用户时将被调用调用
* @param [ctx] channelHandler中的上下文
* @param [req] 消息请求
* @param [res] 消息响应
*/
private void sendHttpResponse(ChannelHandlerContext ctx, HttpRequest req, HttpResponse res) {
if (res.getStatus().getCode() != 200) {
// 将响应信息以UTF_8编码格式写回
ChannelBuffer content =
ChannelBuffers.copiedBuffer(res.getStatus().toString(), CharsetUtil.UTF_8);
int contentLength = res.getContent().readableBytes();
buildResponse(res, false, null, content, contentLength);
}
ChannelFuture f = ctx.getChannel().write(res);
if (!isKeepAlive(req) || res.getStatus().getCode() != 200) {
f.addListener(ChannelFutureListener.CLOSE);
}
}
@Override
public Message toCamelMessage(
HttpResponse response, Exchange exchange, NettyHttpConfiguration configuration)
throws Exception {
LOG.trace("toCamelMessage: {}", response);
NettyHttpMessage answer = new NettyHttpMessage(null, response);
answer.setExchange(exchange);
if (configuration.isMapHeaders()) {
populateCamelHeaders(response, answer.getHeaders(), exchange, configuration);
}
// keep the body as is, and use type converters
answer.setBody(response.getContent());
return answer;
}
private void sendHttpResponse(Channel channel, HttpRequest request, HttpResponse response) {
if (!channel.isOpen()) {
return;
}
// response的内容已在各Listener中填充
response.headers().set(Names.CONTENT_LENGTH, response.getContent().readableBytes());
response.headers().set(Names.SERVER, "NAVI/1.1.4(UNIX)");
if (!HttpHeaders.isKeepAlive(request)
|| response.getStatus() != HttpResponseStatus.OK
|| ServerConfigure.isChannelClose()) {
response.headers().set(Names.CONNECTION, "close");
channel.setAttachment(WRITING);
ChannelFuture f = channel.write(response);
f.addListener(ChannelFutureListener.CLOSE);
f.addListener(
new ChannelFutureListener() {
public void operationComplete(ChannelFuture f) throws Exception {
if (!f.isSuccess()) {
log.error(f.getCause().getMessage(), f.getCause());
}
}
});
} else {
if (request.getProtocolVersion() == HttpVersion.HTTP_1_0) {
response.headers().add(Names.CONNECTION, "Keep-Alive");
}
channel.setAttachment(WRITING);
ChannelFuture f = channel.write(response);
f.addListener(ChannelFutureListener.CLOSE_ON_FAILURE);
f.addListener(
new ChannelFutureListener() {
public void operationComplete(ChannelFuture f) throws Exception {
if (!f.isSuccess()) {
log.error(f.getCause().getMessage(), f.getCause());
}
}
});
}
}
@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
Channel ch = e.getChannel();
ClientConnection conn = connectionMap.get(ch);
Object msg = e.getMessage();
if (msg instanceof HttpResponse) {
HttpResponse response = (HttpResponse) msg;
conn.handleResponse(response);
ChannelBuffer content = response.getContent();
if (content.readable()) {
conn.handleResponseChunk(new Buffer(content));
}
if (!response.isChunked()) {
conn.handleResponseEnd();
}
} else if (msg instanceof HttpChunk) {
HttpChunk chunk = (HttpChunk) msg;
if (chunk.getContent().readable()) {
Buffer buff = new Buffer(chunk.getContent());
conn.handleResponseChunk(buff);
}
if (chunk.isLast()) {
if (chunk instanceof HttpChunkTrailer) {
HttpChunkTrailer trailer = (HttpChunkTrailer) chunk;
conn.handleResponseEnd(trailer);
} else {
conn.handleResponseEnd();
}
}
} else if (msg instanceof WebSocketFrame) {
WebSocketFrame frame = (WebSocketFrame) msg;
conn.handleWsFrame(frame);
} else {
throw new IllegalStateException("Invalid object " + e.getMessage());
}
}
public void writeResponse(byte[] responseValue) {
this.responseContent = ChannelBuffers.dynamicBuffer(responseValue.length);
this.responseContent.writeBytes(responseValue);
// 1. Create the Response object
HttpResponse response = new DefaultHttpResponse(HTTP_1_1, OK);
// 2. Set the right headers
response.setHeader(CONTENT_TYPE, "binary");
response.setHeader(CONTENT_TRANSFER_ENCODING, "binary");
// 3. Copy the data into the payload
response.setContent(responseContent);
response.setHeader(CONTENT_LENGTH, response.getContent().readableBytes());
if (logger.isDebugEnabled()) {
logger.debug("Response = " + response);
}
// Write the response to the Netty Channel
this.getRequestMessageEvent.getChannel().write(response);
}
@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
Channel ch = ctx.getChannel();
if (!handshaker.isHandshakeComplete()) {
handshaker.finishHandshake(ch, (HttpResponse) e.getMessage());
handler.onConnect();
return;
}
if (e.getMessage() instanceof HttpResponse) {
HttpResponse response = (HttpResponse) e.getMessage();
String message =
"Unexpected HttpResponse (status="
+ response.getStatus()
+ ", content="
+ response.getContent().toString(CharsetUtil.UTF_8)
+ ')';
log.error(String.format("Web socket client: %s", message));
throw new Exception(message);
}
WebSocketFrame frame = (WebSocketFrame) e.getMessage();
if (frame instanceof TextWebSocketFrame) {
TextWebSocketFrame textFrame = (TextWebSocketFrame) frame;
try {
handler.onReceive(MAPPER.parseObject(textFrame.getText()));
} catch (Exception e1) {
log.error("Error while decoding JSON websocket message", e1);
}
} else if (frame instanceof PongWebSocketFrame) {
} else if (frame instanceof CloseWebSocketFrame) {
ch.close();
}
}
@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
if (!readingChunks) {
HttpResponse response = (HttpResponse) e.getMessage();
StringBuilder sb = new StringBuilder();
if (LOG.isDebugEnabled()) {
sb.append("STATUS: ")
.append(response.getStatus())
.append(", VERSION: ")
.append(response.getProtocolVersion())
.append(", HEADER: ");
}
if (!response.getHeaderNames().isEmpty()) {
for (String name : response.getHeaderNames()) {
for (String value : response.getHeaders(name)) {
if (LOG.isDebugEnabled()) {
sb.append(name + " = " + value);
}
if (this.length == -1 && name.equals("Content-Length")) {
this.length = Long.valueOf(value);
}
}
}
}
if (LOG.isDebugEnabled()) {
LOG.debug(sb.toString());
}
if (response.getStatus() == HttpResponseStatus.NO_CONTENT) {
LOG.info("There are no data corresponding to the request");
return;
}
this.raf = new RandomAccessFile(file, "rw");
this.fc = raf.getChannel();
if (response.isChunked()) {
readingChunks = true;
} else {
ChannelBuffer content = response.getContent();
if (content.readable()) {
fc.write(content.toByteBuffer());
}
}
} else {
HttpChunk chunk = (HttpChunk) e.getMessage();
if (chunk.isLast()) {
readingChunks = false;
long fileLength = fc.position();
fc.close();
raf.close();
if (fileLength == length) {
LOG.info("Data fetch is done (total received bytes: " + fileLength + ")");
} else {
LOG.info(
"Data fetch is done, but cannot get all data "
+ "(received/total: "
+ fileLength
+ "/"
+ length
+ ")");
}
} else {
fc.write(chunk.getContent().toByteBuffer());
}
}
}
/**
* Sends nested multipart response. Outer multipart wraps all the keys requested. Each key has a
* separate multipart for the versioned values.
*/
@Override
public void sendResponse(StoreStats performanceStats, boolean isFromLocalZone, long startTimeInMs)
throws Exception {
// multiPartKeys is the outer multipart
MimeMultipart multiPartKeys = new MimeMultipart();
ByteArrayOutputStream keysOutputStream = new ByteArrayOutputStream();
for (Entry<ByteArray, List<Versioned<byte[]>>> entry : versionedResponses.entrySet()) {
ByteArray key = entry.getKey();
String contentLocationKey =
"/" + this.storeName + "/" + new String(Base64.encodeBase64(key.get()));
// Create the individual body part - for each key requested
MimeBodyPart keyBody = new MimeBodyPart();
try {
// Add the right headers
keyBody.addHeader(CONTENT_TYPE, "application/octet-stream");
keyBody.addHeader(CONTENT_TRANSFER_ENCODING, "binary");
keyBody.addHeader(CONTENT_LOCATION, contentLocationKey);
} catch (MessagingException me) {
logger.error("Exception while constructing key body headers", me);
keysOutputStream.close();
throw me;
}
// multiPartValues is the inner multipart
MimeMultipart multiPartValues = new MimeMultipart();
for (Versioned<byte[]> versionedValue : entry.getValue()) {
byte[] responseValue = versionedValue.getValue();
VectorClock vectorClock = (VectorClock) versionedValue.getVersion();
String eTag = RestUtils.getSerializedVectorClock(vectorClock);
// Create the individual body part - for each versioned value of
// a key
MimeBodyPart valueBody = new MimeBodyPart();
try {
// Add the right headers
valueBody.addHeader(CONTENT_TYPE, "application/octet-stream");
valueBody.addHeader(CONTENT_TRANSFER_ENCODING, "binary");
valueBody.addHeader(RestMessageHeaders.X_VOLD_VECTOR_CLOCK, eTag);
valueBody.setContent(responseValue, "application/octet-stream");
multiPartValues.addBodyPart(valueBody);
} catch (MessagingException me) {
logger.error("Exception while constructing value body part", me);
keysOutputStream.close();
throw me;
}
}
try {
// Add the inner multipart as the content of the outer body part
keyBody.setContent(multiPartValues);
multiPartKeys.addBodyPart(keyBody);
} catch (MessagingException me) {
logger.error("Exception while constructing key body part", me);
keysOutputStream.close();
throw me;
}
}
try {
multiPartKeys.writeTo(keysOutputStream);
} catch (Exception e) {
logger.error("Exception while writing mutipart to output stream", e);
throw e;
}
ChannelBuffer responseContent = ChannelBuffers.dynamicBuffer();
responseContent.writeBytes(keysOutputStream.toByteArray());
// Create the Response object
HttpResponse response = new DefaultHttpResponse(HTTP_1_1, OK);
// Set the right headers
response.setHeader(CONTENT_TYPE, "multipart/binary");
response.setHeader(CONTENT_TRANSFER_ENCODING, "binary");
// Copy the data into the payload
response.setContent(responseContent);
response.setHeader(CONTENT_LENGTH, response.getContent().readableBytes());
// Write the response to the Netty Channel
this.messageEvent.getChannel().write(response);
if (performanceStats != null && isFromLocalZone) {
recordStats(performanceStats, startTimeInMs, Tracked.GET_ALL);
}
keysOutputStream.close();
}