@Override
public void channelRead0(
ChannelHandlerContext channelHandlerContext, FullHttpRequest fullHttpRequest)
throws Exception {
DecoderResult decoderResult = fullHttpRequest.decoderResult();
if (!decoderResult.isSuccess()) {
_sendError(channelHandlerContext, BAD_REQUEST);
return;
}
if (fullHttpRequest.method() == GET) {
processGetRequest(channelHandlerContext, fullHttpRequest);
} else if (fullHttpRequest.method() == HEAD) {
processHeadRequest(channelHandlerContext, fullHttpRequest);
} else {
_sendError(channelHandlerContext, BAD_REQUEST);
}
}
private ChannelFuture handleHttpRequest(ChannelHandlerContext ctx, FullHttpRequest request) {
if (request.method() == HttpMethod.OPTIONS) {
return HttpHelpers.sendPreflightApproval(ctx);
}
HttpRequestInfo CurrRequest = new HttpRequestInfo();
try {
CurrRequest.init(Info, request, SVID.makeSVID());
} catch (URISyntaxException e1) {
return HttpHelpers.sendError(CurrRequest, ApiErrors.HTTP_DECODE_ERROR);
}
URI uri = CurrRequest.RequestURI;
l.debug(new SVLog("Agent HTTP request", CurrRequest));
if (!request.decoderResult().isSuccess()) {
return HttpHelpers.sendError(CurrRequest, ApiErrors.HTTP_DECODE_ERROR);
}
if (!authenticate(request, (InetSocketAddress) ctx.channel().remoteAddress())) {
return HttpHelpers.sendError(CurrRequest, ApiErrors.BAD_AUTH);
}
String uriPath = uri.getPath();
if (uriPath.equals(WEBSOCKET_PATH)) {
String websockUrl = request.headers().get(HttpHeaderNames.HOST) + WEBSOCKET_PATH;
WebSocketServerHandshakerFactory wsFactory =
new WebSocketServerHandshakerFactory(websockUrl, null, false);
Handshaker = wsFactory.newHandshaker(request);
if (Handshaker == null) {
return WebSocketServerHandshakerFactory.sendUnsupportedVersionResponse(ctx.channel());
} else {
WebsocketConnected = true;
return Handshaker.handshake(ctx.channel(), request);
}
}
if (uriPath.startsWith("/api/")) {
// Invoking an API directly over HTTP
String messageType = uriPath.substring(5);
String messageBody = null;
if (request.method() == HttpMethod.POST && request.content() != null) {
messageBody = request.content().toString(StandardCharsets.UTF_8);
}
ByteBuf reply = null;
try {
reply = Dispatcher.dispatch(messageType, messageBody);
} catch (JsonProcessingException e) {
return HttpHelpers.sendError(CurrRequest, ApiErrors.JSON_ERROR, e.getMessage());
} catch (SQLException e) {
return HttpHelpers.sendError(CurrRequest, ApiErrors.DB_ERROR, e.getMessage());
} catch (JsonApiException e) {
return HttpHelpers.sendErrorJson(CurrRequest, e.Error, e.HttpStatus);
} catch (Exception e) {
return HttpHelpers.sendError(CurrRequest, ApiErrors.INTERNAL_SERVER_ERROR, e.getMessage());
}
HttpResponse response =
new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK, reply);
if (reply != null) {
HttpHelpers.setContentTypeHeader(response, "application/json");
HttpUtil.setContentLength(response, reply.readableBytes());
}
response.headers().set(HttpHeaderNames.ACCESS_CONTROL_ALLOW_ORIGIN, "*");
return ctx.writeAndFlush(response);
}
return HttpHelpers.sendError(CurrRequest, ApiErrors.NOT_FOUND);
}