Examples with ExecutableBinder io.micronaut.core.bind.ExecutableBinder used on opensource projects

Example 1 with ExecutableBinder

use of io.micronaut.core.bind.ExecutableBinder in project micronaut-core by micronaut-projects.

the class AbstractNettyWebSocketHandler method handleWebSocketFrame.

/**
 * Handles WebSocket frame request.
 *
 * @param ctx The context
 * @param msg The frame
 */
protected void handleWebSocketFrame(ChannelHandlerContext ctx, WebSocketFrame msg) {
    if (msg instanceof TextWebSocketFrame || msg instanceof BinaryWebSocketFrame || msg instanceof ContinuationWebSocketFrame) {
        if (messageHandler == null) {
            if (LOG.isDebugEnabled()) {
                LOG.debug("WebSocket bean [" + webSocketBean.getTarget() + "] received message, but defined no @OnMessage handler. Dropping frame...");
            }
            writeCloseFrameAndTerminate(ctx, CloseReason.UNSUPPORTED_DATA);
        } else {
            ByteBuf msgContent = msg.content().retain();
            if (!msg.isFinalFragment()) {
                frameBuffer.updateAndGet((buffer) -> {
                    if (buffer == null) {
                        buffer = ctx.alloc().compositeBuffer();
                    }
                    buffer.addComponent(true, msgContent);
                    return buffer;
                });
                return;
            }
            ByteBuf content;
            CompositeByteBuf buffer = frameBuffer.getAndSet(null);
            if (buffer == null) {
                content = msgContent;
            } else {
                buffer.addComponent(true, msgContent);
                content = buffer;
            }
            Argument<?> bodyArgument = this.getBodyArgument();
            Optional<?> converted = ConversionService.SHARED.convert(content, bodyArgument);
            content.release();
            if (!converted.isPresent()) {
                MediaType mediaType;
                try {
                    mediaType = messageHandler.stringValue(Consumes.class).map(MediaType::of).orElse(MediaType.APPLICATION_JSON_TYPE);
                } catch (IllegalArgumentException e) {
                    exceptionCaught(ctx, e);
                    return;
                }
                try {
                    converted = mediaTypeCodecRegistry.findCodec(mediaType).map(codec -> codec.decode(bodyArgument, new NettyByteBufferFactory(ctx.alloc()).wrap(msg.content())));
                } catch (CodecException e) {
                    messageProcessingException(ctx, e);
                    return;
                }
            }
            if (converted.isPresent()) {
                Object v = converted.get();
                NettyWebSocketSession currentSession = getSession();
                ExecutableBinder<WebSocketState> executableBinder = new DefaultExecutableBinder<>(Collections.singletonMap(bodyArgument, v));
                try {
                    BoundExecutable boundExecutable = executableBinder.bind(messageHandler.getExecutableMethod(), webSocketBinder, new WebSocketState(currentSession, originatingRequest));
                    Object result = invokeExecutable(boundExecutable, messageHandler);
                    if (Publishers.isConvertibleToPublisher(result)) {
                        Flux<?> flowable = Flux.from(instrumentPublisher(ctx, result));
                        flowable.subscribe(o -> {
                        }, error -> messageProcessingException(ctx, error), () -> messageHandled(ctx, session, v));
                    } else {
                        messageHandled(ctx, session, v);
                    }
                } catch (Throwable e) {
                    messageProcessingException(ctx, e);
                }
            } else {
                writeCloseFrameAndTerminate(ctx, CloseReason.UNSUPPORTED_DATA.getCode(), CloseReason.UNSUPPORTED_DATA.getReason() + ": " + "Received data cannot be converted to target type: " + bodyArgument);
            }
        }
    } else if (msg instanceof PingWebSocketFrame) {
        // respond with pong
        PingWebSocketFrame frame = (PingWebSocketFrame) msg.retain();
        ctx.writeAndFlush(new PongWebSocketFrame(frame.content()));
    } else if (msg instanceof PongWebSocketFrame) {
        if (pongHandler != null) {
            ByteBuf content = msg.content();
            WebSocketPongMessage message = new WebSocketPongMessage(NettyByteBufferFactory.DEFAULT.wrap(content));
            NettyWebSocketSession currentSession = getSession();
            ExecutableBinder<WebSocketState> executableBinder = new DefaultExecutableBinder<>(Collections.singletonMap(getPongArgument(), message));
            try {
                BoundExecutable boundExecutable = executableBinder.bind(pongHandler.getExecutableMethod(), webSocketBinder, new WebSocketState(currentSession, originatingRequest));
                Object result = invokeExecutable(boundExecutable, pongHandler);
                if (Publishers.isConvertibleToPublisher(result)) {
                    // delay the buffer release until the publisher has completed
                    content.retain();
                    Flux<?> flowable = Flux.from(instrumentPublisher(ctx, result));
                    flowable.subscribe(o -> {
                    }, error -> {
                        if (LOG.isErrorEnabled()) {
                            LOG.error("Error Processing WebSocket Pong Message [" + webSocketBean + "]: " + error.getMessage(), error);
                        }
                        exceptionCaught(ctx, error);
                    }, content::release);
                }
            } catch (Throwable e) {
                if (LOG.isErrorEnabled()) {
                    LOG.error("Error Processing WebSocket Message [" + webSocketBean + "]: " + e.getMessage(), e);
                }
                exceptionCaught(ctx, e);
            }
        }
    } else if (msg instanceof CloseWebSocketFrame) {
        CloseWebSocketFrame cwsf = (CloseWebSocketFrame) msg;
        handleCloseFrame(ctx, cwsf);
    } else {
        writeCloseFrameAndTerminate(ctx, CloseReason.UNSUPPORTED_DATA);
    }
}