Examples with EUnexpected com.accenture.trac.common.exception.EUnexpected used on opensource projects

Example 36 with EUnexpected

use of com.accenture.trac.common.exception.EUnexpected in project tracdap by finos.

the class Http1Router method processEndOfRequest.

private void processEndOfRequest(ChannelHandlerContext ctx, LastHttpContent msg) {
    var request = requests.getOrDefault(currentInboundRequest, null);
    if (request == null)
        throw new EUnexpected();
    switch(request.status) {
        case RECEIVING:
            request.status = RequestStatus.WAITING_FOR_RESPONSE;
            break;
        case RECEIVING_BIDI:
            request.status = RequestStatus.RESPONDING;
            break;
        case COMPLETED:
        case FAILED:
            requests.remove(currentInboundRequest);
            return;
        default:
            throw new EUnexpected();
    }
    var target = targets.getOrDefault(request.routeIndex, null);
    if (target == null)
        throw new EUnexpected();
    if (target.channel.isActive())
        target.channel.flush();
}

Example 37 with EUnexpected

use of com.accenture.trac.common.exception.EUnexpected in project tracdap by finos.

the class GrpcWebProxy method channelRead.

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
    // gRPC proxy layer expects all messages to be HTTP/2 frames
    if (!(msg instanceof Http2Frame))
        throw new EUnexpected();
    var frame = (Http2Frame) msg;
    if (frame instanceof Http2HeadersFrame) {
        var grpcFrame = (Http2HeadersFrame) frame;
        var grpcWebFrame = grpcFrame.headers().contains(":status") ? translateResponseHeaders(grpcFrame) : translateResponseTrailers(grpcFrame, ctx.alloc());
        ctx.fireChannelRead(grpcWebFrame);
    } else if (frame instanceof Http2DataFrame) {
        var grpcFrame = (Http2DataFrame) frame;
        var grpcWebFrame = isWebTextProtocol ? encodeWebTextFrame(grpcFrame) : grpcFrame.retain();
        ctx.fireChannelRead(grpcWebFrame);
        // The original frame is no longer needed and can be released
        grpcFrame.release();
    } else {
        // gRPC proxy layer does not interact with control frames (settings/ping/goaway/etc)
        // Most likely there shouldn't be any of these at this layer anyway
        log.warn("Unexpected HTTP/2 response frame ({}) in gRPC-web proxy layer", frame.name());
    // ctx.fireChannelRead(frame);
    }
}

Example 38 with EUnexpected

use of com.accenture.trac.common.exception.EUnexpected in project tracdap by finos.

the class GrpcWebProxy method write.

@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) {
    // gRPC proxy layer expects all messages to be HTTP/2 frames
    if (!(msg instanceof Http2Frame))
        throw new EUnexpected();
    var frame = (Http2Frame) msg;
    if (frame instanceof Http2HeadersFrame) {
        var grpcWebFrame = (Http2HeadersFrame) frame;
        var grpcFrame = translateRequestHeaders(grpcWebFrame);
        log.info("Translating gRPC request for stream {}", grpcWebFrame.stream().id());
        ctx.write(grpcFrame, promise);
    } else if (frame instanceof Http2DataFrame) {
        var grpcWebFrame = (Http2DataFrame) frame;
        var grpcFrame = isWebTextProtocol ? decodeWebTextFrame(grpcWebFrame) : grpcWebFrame.retain();
        ctx.write(grpcFrame, promise);
        // The original frame is no longer needed and can be released
        grpcWebFrame.release();
    } else {
        // gRPC proxy layer does not interact with control frames (settings/ping/goaway/etc)
        // Most likely there shouldn't be any of these at this layer anyway
        log.warn("Unexpected HTTP/2 request frame ({}) in gRPC-web proxy layer", frame.name());
        ctx.write(msg, promise);
    }
}

Example 39 with EUnexpected

use of com.accenture.trac.common.exception.EUnexpected in project tracdap by finos.

the class RestApiProxy method write.

@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) {
    try {
        // REST proxy layer expects all messages to be HTTP/2 frames
        if (!(msg instanceof Http2Frame))
            throw new EUnexpected();
        var frame = (Http2Frame) msg;
        if (frame instanceof Http2HeadersFrame) {
            var headersFrame = (Http2HeadersFrame) frame;
            var stream = headersFrame.stream();
            if (!callStateMap.containsKey(stream)) {
                var method = lookupMethod(headersFrame);
                if (method == null) {
                    log.warn("PROXY REST CALL: {} {} ! NOT MAPPED", headersFrame.headers().method(), headersFrame.headers().path());
                    var httpCode = HttpResponseStatus.NOT_FOUND;
                    var httpContent = "REST API NOT MAPPED";
                    sendErrorResponse(stream, ctx, httpCode, httpContent);
                    return;
                } else {
                    log.info("PROXY REST CALL: {} {} -> {}", headersFrame.headers().method(), headersFrame.headers().path(), method.grpcMethod.getFullMethodName());
                    var callState = new RestApiCallState();
                    callState.method = method;
                    callState.requestHeaders = new DefaultHttp2Headers();
                    callState.requestContent = ctx.alloc().compositeBuffer();
                    callState.stream = stream;
                    callStateMap.put(stream, callState);
                }
            }
            var callState = callStateMap.get(stream);
            callState.requestHeaders.add(headersFrame.headers());
            if (headersFrame.isEndStream())
                dispatchUnaryRequest(callState.method, callState, ctx);
        } else if (frame instanceof Http2DataFrame) {
            var dataFrame = (Http2DataFrame) frame;
            var stream = dataFrame.stream();
            var callState = callStateMap.get(stream);
            // TODO: Check call state and stream are good
            if (dataFrame.content() != null && dataFrame.content().readableBytes() > 0)
                callState.requestContent.addComponent(true, dataFrame.content());
            if (dataFrame.isEndStream())
                dispatchUnaryRequest(callState.method, callState, ctx);
        } else {
            log.warn("Unexpected frame type {} will be dropped", frame.name());
        }
    } finally {
        // RestApiProxy uses the HTTP/2 codec and runs on an embedded channel
        // We are intercepting messages and then making calls to gRPC using the gRPC client
        // However, in order for the HTTP/2 codec to work, messages need to propagate down to the codec handler
        // So, instead of releasing the message, pass it on to the next handler
        // And the let the HTTP/2 codec at the end of the pipeline release it
        ctx.write(msg);
    }
}

Example 40 with EUnexpected

use of com.accenture.trac.common.exception.EUnexpected in project tracdap by finos.

the class RestApiTranslator method translateRequest.

@SuppressWarnings("unchecked")
public TRequest translateRequest(String url) {
    // This should be set up correctly when the API route is created
    if (this.hasBody)
        throw new EUnexpected();
    var request = blankRequest.newBuilderForType();
    var requestUrl = URI.create(url);
    for (var extractor : fieldExtractors) request = extractor.apply(requestUrl, request);
    return (TRequest) request.build();
}