public void sendError() {
if (request == null
|| status == null
|| shortDescription == null
|| detailedDescription == null
|| version == null
|| status == null) throw new IllegalStateException();
StringBuffer sb = new StringBuffer();
sb.append("Error ").append(status.code()).append(": ").append(shortDescription);
sb.append("\n\n");
sb.append(detailedDescription);
sb.append("\n\n");
sb.append("Request:\n").append(request.getUri());
sb.append("\n\n");
sb.append("Request Submitted:\n").append(FdsnwsDate.toString(new Date()));
sb.append("\n\n");
sb.append("Service version:\n").append(version);
String html = sb.toString();
FullHttpResponse response =
new DefaultFullHttpResponse(
request.getProtocolVersion(),
status,
Unpooled.copiedBuffer(html, Charset.forName("UTF-8")));
response.headers().set(HttpHeaders.Names.CONTENT_LENGTH, html.length());
response.headers().set(HttpHeaders.Names.CONTENT_TYPE, "text/plain; charset=UTF-8");
if (HttpHeaders.isKeepAlive(request)) {
response.headers().set(HttpHeaders.Names.CONNECTION, HttpHeaders.Values.KEEP_ALIVE);
}
ctx.writeAndFlush(response);
}
@Override
public void channelRead0(final ChannelHandlerContext ctx, final FullHttpRequest request)
throws Exception {
final String content = getContent(request);
if (noContent(content)) {
ctx.writeAndFlush(
internalServerErrorResponse(request.getProtocolVersion(), "Payload expected."))
.addListener(ChannelFutureListener.CLOSE);
} else {
try {
final String[] messages = JsonUtil.decode(content);
for (String message : messages) {
ctx.fireChannelRead(message);
}
respond(ctx, request);
} catch (final JsonParseException e) {
ctx.writeAndFlush(
internalServerErrorResponse(request.getProtocolVersion(), "Broken JSON encoding."));
}
}
}
private void handleDeath(Throwable cause) {
if (cause != null)
sendHttpResponse(
ctx,
req,
new DefaultFullHttpResponse(
req.getProtocolVersion(),
INTERNAL_SERVER_ERROR,
Unpooled.wrappedBuffer(
("Actor is dead because of " + cause.getMessage()).getBytes())),
false);
else
sendHttpResponse(
ctx,
req,
new DefaultFullHttpResponse(
req.getProtocolVersion(),
INTERNAL_SERVER_ERROR,
Unpooled.wrappedBuffer(("Actor has terminated.").getBytes())),
false);
}
private static void sendHttpRedirect(
ChannelHandlerContext ctx, FullHttpRequest req, String newUri) {
final FullHttpResponse res = new DefaultFullHttpResponse(req.getProtocolVersion(), FOUND);
HttpHeaders.setHeader(res, LOCATION, newUri);
writeHttpResponse(ctx, req, res, true);
}
@Override
public final boolean trySend(HttpResponse message) {
try {
final HttpRequestWrapper nettyRequest = (HttpRequestWrapper) message.getRequest();
final FullHttpRequest req = nettyRequest.req;
final ChannelHandlerContext ctx = nettyRequest.ctx;
final HttpResponseStatus status = HttpResponseStatus.valueOf(message.getStatus());
if (message.getStatus() >= 400 && message.getStatus() < 600) {
sendHttpResponse(
ctx, req, new DefaultFullHttpResponse(req.getProtocolVersion(), status), false);
close();
return true;
}
if (message.getRedirectPath() != null) {
sendHttpRedirect(ctx, req, message.getRedirectPath());
close();
return true;
}
FullHttpResponse res;
if (message.getStringBody() != null)
res =
new DefaultFullHttpResponse(
req.getProtocolVersion(),
status,
Unpooled.wrappedBuffer(message.getStringBody().getBytes()));
else if (message.getByteBufferBody() != null)
res =
new DefaultFullHttpResponse(
req.getProtocolVersion(),
status,
Unpooled.wrappedBuffer(message.getByteBufferBody()));
else res = new DefaultFullHttpResponse(req.getProtocolVersion(), status);
if (message.getCookies() != null) {
final ServerCookieEncoder enc = ServerCookieEncoder.STRICT;
for (final Cookie c : message.getCookies())
HttpHeaders.setHeader(res, COOKIE, enc.encode(getNettyCookie(c)));
}
if (message.getHeaders() != null) {
for (final Map.Entry<String, String> h : message.getHeaders().entries())
HttpHeaders.setHeader(res, h.getKey(), h.getValue());
}
if (message.getContentType() != null) {
String ct = message.getContentType();
if (message.getCharacterEncoding() != null)
ct = ct + "; charset=" + message.getCharacterEncoding().name();
HttpHeaders.setHeader(res, CONTENT_TYPE, ct);
}
final boolean sseStarted = message.shouldStartActor();
if (trackSession(sseStarted)) {
final String sessionId = UUID.randomUUID().toString();
res.headers()
.add(SET_COOKIE, ServerCookieEncoder.STRICT.encode(SESSION_COOKIE_KEY, sessionId));
startSession(sessionId, actorContext);
}
if (!sseStarted) {
final String stringBody = message.getStringBody();
long contentLength = 0L;
if (stringBody != null) contentLength = stringBody.getBytes().length;
else {
final ByteBuffer byteBufferBody = message.getByteBufferBody();
if (byteBufferBody != null) contentLength = byteBufferBody.remaining();
}
res.headers().add(CONTENT_LENGTH, contentLength);
}
final HttpStreamActorAdapter httpStreamActorAdapter;
if (sseStarted)
// This will copy the request content, which must still be referenceable, doing before the
// request handler
// unallocates it (unfortunately it is explicitly reference-counted in Netty)
httpStreamActorAdapter = new HttpStreamActorAdapter(ctx, req);
else httpStreamActorAdapter = null;
sendHttpResponse(ctx, req, res, false);
if (sseStarted) {
if (httpResponseEncoderName != null) {
ctx.pipeline().remove(httpResponseEncoderName);
} else {
final ChannelPipeline pl = ctx.pipeline();
final List<String> handlerKeysToBeRemoved = new ArrayList<>();
for (final Map.Entry<String, ChannelHandler> e : pl) {
if (e.getValue() instanceof HttpResponseEncoder)
handlerKeysToBeRemoved.add(e.getKey());
}
for (final String k : handlerKeysToBeRemoved) pl.remove(k);
}
try {
message.getFrom().send(new HttpStreamOpened(httpStreamActorAdapter.ref(), message));
} catch (SuspendExecution e) {
throw new AssertionError(e);
}
}
return true;
} finally {
if (actor != null) actor.unwatch();
}
}
private void handleHttpRequest(ChannelHandlerContext ctx, FullHttpRequest req)
throws SuspendExecution {
// Handle a bad request.
if (!req.getDecoderResult().isSuccess()) {
sendHttpResponse(
ctx, req, new DefaultFullHttpResponse(req.getProtocolVersion(), BAD_REQUEST), false);
return;
}
final String uri = req.getUri();
final Context actorCtx = selector.get(ctx, req);
assert actorCtx != null;
final ReentrantLock lock = actorCtx.getLock();
assert lock != null;
lock.lock();
try {
final ActorRef<? extends WebMessage> userActorRef = actorCtx.getRef();
ActorImpl internalActor = (ActorImpl) actorCtx.getAttachments().get(ACTOR_KEY);
if (userActorRef != null) {
if (actorCtx.handlesWithWebSocket(uri)) {
if (internalActor == null || !(internalActor instanceof WebSocketActorAdapter)) {
//noinspection unchecked
webSocketActor =
new WebSocketActorAdapter(ctx, (ActorRef<? super WebMessage>) userActorRef);
addActorToContextAndUnlock(actorCtx, webSocketActor, lock);
}
// Handshake
final WebSocketServerHandshakerFactory wsFactory =
new WebSocketServerHandshakerFactory(uri, null, true);
handshaker = wsFactory.newHandshaker(req);
if (handshaker == null) {
WebSocketServerHandshakerFactory.sendUnsupportedVersionResponse(ctx.channel());
} else {
@SuppressWarnings("unchecked")
final ActorRef<WebMessage> userActorRef0 =
(ActorRef<WebMessage>) webSocketActor.userActor;
handshaker
.handshake(ctx.channel(), req)
.addListener(
new GenericFutureListener<ChannelFuture>() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
FiberUtil.runInFiber(
new SuspendableRunnable() {
@Override
public void run() throws SuspendExecution, InterruptedException {
userActorRef0.send(
new WebSocketOpened(WebActorHandler.this.webSocketActor.ref()));
}
});
}
});
}
return;
} else if (actorCtx.handlesWithHttp(uri)) {
if (internalActor == null || !(internalActor instanceof HttpActorAdapter)) {
//noinspection unchecked
internalActor =
new HttpActorAdapter(
(ActorRef<HttpRequest>) userActorRef, actorCtx, httpResponseEncoderName);
addActorToContextAndUnlock(actorCtx, internalActor, lock);
}
//noinspection unchecked
((HttpActorAdapter) internalActor).service(ctx, req);
return;
}
}
} finally {
if (lock.isHeldByCurrentStrand() && lock.isLocked()) lock.unlock();
}
sendHttpResponse(
ctx, req, new DefaultFullHttpResponse(req.getProtocolVersion(), NOT_FOUND), false);
}