Examples with QueueDrainingEventProcessor com.hotels.styx.common.QueueDrainingEventProcessor used on opensource projects

Example 1 with QueueDrainingEventProcessor

use of com.hotels.styx.common.QueueDrainingEventProcessor in project styx by ExpediaGroup.

the class HttpPipelineHandler method channelActive.

@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
    String loggingPrefix = format("%s -> %s", ctx.channel().remoteAddress(), ctx.channel().localAddress());
    this.eventProcessor = new QueueDrainingEventProcessor(new FsmEventProcessor<>(stateMachine, (throwable, state) -> {
    }, loggingPrefix));
    super.channelActive(ctx);
}

Example 2 with QueueDrainingEventProcessor

use of com.hotels.styx.common.QueueDrainingEventProcessor in project styx by ExpediaGroup.

the class ResponseEventListener method apply.

public Flux<LiveHttpResponse> apply() {
    EventProcessor eventProcessor = new QueueDrainingEventProcessor(event -> {
        switch(state) {
            case INITIAL:
                if (event instanceof MessageHeaders) {
                    onHeaders.run();
                    state = STREAMING;
                } else if (event instanceof MessageCancelled) {
                    cancelAction.run();
                    whenFinishedAction.run();
                    state = TERMINATED;
                } else if (event instanceof MessageCompleted) {
                    // TODO: Add custom exception type?
                    responseErrorAction.accept(new RuntimeException("Response Observable completed without message headers."));
                    whenFinishedAction.run();
                    state = TERMINATED;
                } else if (event instanceof MessageError) {
                    responseErrorAction.accept(((MessageError) event).cause());
                    whenFinishedAction.run();
                    state = TERMINATED;
                }
                break;
            case STREAMING:
                if (event instanceof ContentEnd) {
                    onCompletedAction.accept(((ContentEnd) event).response);
                    whenFinishedAction.run();
                    state = COMPLETED;
                } else if (event instanceof ContentError) {
                    contentErrorAction.accept(((ContentError) event).cause());
                    whenFinishedAction.run();
                    state = TERMINATED;
                } else if (event instanceof ContentCancelled) {
                    cancelAction.run();
                    whenFinishedAction.run();
                    state = TERMINATED;
                }
                break;
        }
    });
    return publisher.doOnNext(headers -> eventProcessor.submit(new MessageHeaders())).doOnComplete(() -> eventProcessor.submit(new MessageCompleted())).doOnError(cause -> eventProcessor.submit(new MessageError(cause))).doOnCancel(() -> eventProcessor.submit(new MessageCancelled())).map(response -> response.newBuilder().body(it -> it.doOnEnd(ifError(cause -> eventProcessor.submit(new ContentError(cause))))).body(it -> it.doOnEnd(ifSuccessful(() -> eventProcessor.submit(new ContentEnd(response))))).body(it -> it.doOnCancel(() -> eventProcessor.submit(new ContentCancelled()))).build());
}