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Example 11 with HttpStatus

use of io.micronaut.http.HttpStatus in project micronaut-core by micronaut-projects.

the class DefaultHttpClient method addFullHttpResponseHandler.

@SuppressWarnings("MagicNumber")
private <O, E> void addFullHttpResponseHandler(io.micronaut.http.HttpRequest<?> request, Channel channel, boolean secure, ChannelPool channelPool, FluxSink<io.micronaut.http.HttpResponse<O>> emitter, Argument<O> bodyType, Argument<E> errorType) {
    ChannelPipeline pipeline = channel.pipeline();
    final SimpleChannelInboundHandler<FullHttpResponse> newHandler = new SimpleChannelInboundHandlerInstrumented<FullHttpResponse>(false) {

        AtomicBoolean complete = new AtomicBoolean(false);

        boolean keepAlive = true;

        @Override
        public boolean acceptInboundMessage(Object msg) {
            return msg instanceof FullHttpResponse && (secure || !discardH2cStream((HttpMessage) msg));
        }

        @Override
        protected void channelReadInstrumented(ChannelHandlerContext channelHandlerContext, FullHttpResponse fullResponse) {
            try {
                HttpResponseStatus status = fullResponse.status();
                int statusCode = status.code();
                HttpStatus httpStatus;
                try {
                    httpStatus = HttpStatus.valueOf(statusCode);
                } catch (IllegalArgumentException e) {
                    if (complete.compareAndSet(false, true)) {
                        if (!emitter.isCancelled()) {
                            emitter.error(e);
                        }
                    } else if (log.isWarnEnabled()) {
                        log.warn("Unsupported http status after handler completed: " + e.getMessage(), e);
                    }
                    return;
                }
                try {
                    HttpHeaders headers = fullResponse.headers();
                    if (log.isDebugEnabled()) {
                        log.debug("Received response {} from {}", status.code(), request.getUri());
                    }
                    if (log.isTraceEnabled()) {
                        traceHeaders(headers);
                        traceBody("Response", fullResponse.content());
                    }
                    // it is a redirect
                    if (statusCode > 300 && statusCode < 400 && configuration.isFollowRedirects() && headers.contains(HttpHeaderNames.LOCATION)) {
                        String location = headers.get(HttpHeaderNames.LOCATION);
                        final MutableHttpRequest<Object> redirectRequest;
                        if (statusCode == 307) {
                            redirectRequest = io.micronaut.http.HttpRequest.create(request.getMethod(), location);
                            request.getBody().ifPresent(redirectRequest::body);
                        } else {
                            redirectRequest = io.micronaut.http.HttpRequest.GET(location);
                        }
                        setRedirectHeaders(request, redirectRequest);
                        Flux<io.micronaut.http.HttpResponse<O>> redirectExchange = Flux.from(resolveRedirectURI(request, redirectRequest)).switchMap(buildExchangePublisher(request, redirectRequest, bodyType, errorType));
                        redirectExchange.defaultIfEmpty(io.micronaut.http.HttpResponse.notFound()).subscribe(oHttpResponse -> {
                            if (bodyType == null || !bodyType.isVoid()) {
                                emitter.next(oHttpResponse);
                            }
                            emitter.complete();
                        }, throwable -> {
                            if (!emitter.isCancelled()) {
                                emitter.error(throwable);
                            }
                        });
                        return;
                    }
                    if (statusCode == HttpStatus.NO_CONTENT.getCode()) {
                        // normalize the NO_CONTENT header, since http content aggregator adds it even if not present in the response
                        headers.remove(HttpHeaderNames.CONTENT_LENGTH);
                    }
                    boolean convertBodyWithBodyType = statusCode < 400 || (!DefaultHttpClient.this.configuration.isExceptionOnErrorStatus() && bodyType.equalsType(errorType));
                    FullNettyClientHttpResponse<O> response = new FullNettyClientHttpResponse<>(fullResponse, httpStatus, mediaTypeCodecRegistry, byteBufferFactory, bodyType, convertBodyWithBodyType);
                    if (complete.compareAndSet(false, true)) {
                        if (convertBodyWithBodyType) {
                            if (bodyType == null || !bodyType.isVoid()) {
                                emitter.next(response);
                            }
                            response.onComplete();
                            emitter.complete();
                        } else {
                            // error flow
                            try {
                                HttpClientResponseException clientError;
                                if (errorType != null && errorType != HttpClient.DEFAULT_ERROR_TYPE) {
                                    clientError = new HttpClientResponseException(status.reasonPhrase(), null, response, new HttpClientErrorDecoder() {

                                        @Override
                                        public Argument<?> getErrorType(MediaType mediaType) {
                                            return errorType;
                                        }
                                    });
                                } else {
                                    clientError = new HttpClientResponseException(status.reasonPhrase(), response);
                                }
                                try {
                                    if (!emitter.isCancelled()) {
                                        emitter.error(clientError);
                                    }
                                } finally {
                                    response.onComplete();
                                }
                            } catch (Throwable t) {
                                if (t instanceof HttpClientResponseException) {
                                    try {
                                        if (!emitter.isCancelled()) {
                                            emitter.error(t);
                                        }
                                    } finally {
                                        response.onComplete();
                                    }
                                } else {
                                    response.onComplete();
                                    FullNettyClientHttpResponse<Object> errorResponse = new FullNettyClientHttpResponse<>(fullResponse, httpStatus, mediaTypeCodecRegistry, byteBufferFactory, null, false);
                                    errorResponse.onComplete();
                                    HttpClientResponseException clientResponseError = new HttpClientResponseException("Error decoding HTTP error response body: " + t.getMessage(), t, errorResponse, null);
                                    if (!emitter.isCancelled()) {
                                        emitter.error(clientResponseError);
                                    }
                                }
                            }
                        }
                    }
                } catch (Throwable t) {
                    if (complete.compareAndSet(false, true)) {
                        if (t instanceof HttpClientResponseException) {
                            if (!emitter.isCancelled()) {
                                emitter.error(t);
                            }
                        } else {
                            FullNettyClientHttpResponse<Object> response = new FullNettyClientHttpResponse<>(fullResponse, httpStatus, mediaTypeCodecRegistry, byteBufferFactory, null, false);
                            HttpClientResponseException clientResponseError = new HttpClientResponseException("Error decoding HTTP response body: " + t.getMessage(), t, response, new HttpClientErrorDecoder() {

                                @Override
                                public Argument<?> getErrorType(MediaType mediaType) {
                                    return errorType;
                                }
                            });
                            try {
                                if (!emitter.isCancelled()) {
                                    emitter.error(clientResponseError);
                                }
                            } finally {
                                response.onComplete();
                            }
                        }
                    } else {
                        if (log.isWarnEnabled()) {
                            log.warn("Exception fired after handler completed: " + t.getMessage(), t);
                        }
                    }
                }
            } finally {
                if (fullResponse.refCnt() > 0) {
                    try {
                        ReferenceCountUtil.release(fullResponse);
                    } catch (Throwable e) {
                        if (log.isDebugEnabled()) {
                            log.debug("Failed to release response: {}", fullResponse);
                        }
                    }
                }
                if (!HttpUtil.isKeepAlive(fullResponse)) {
                    keepAlive = false;
                }
                pipeline.remove(this);
            }
        }

        @Override
        public void handlerRemoved(ChannelHandlerContext ctx) {
            if (channelPool != null) {
                if (readTimeoutMillis != null) {
                    ctx.pipeline().remove(ChannelPipelineCustomizer.HANDLER_READ_TIMEOUT);
                }
                final Channel ch = ctx.channel();
                if (!keepAlive) {
                    ch.closeFuture().addListener((future -> channelPool.release(ch)));
                } else {
                    channelPool.release(ch);
                }
            } else {
                // just close it to prevent any future reads without a handler registered
                ctx.close();
            }
        }

        @Override
        public void handlerAdded(ChannelHandlerContext ctx) {
            if (readTimeoutMillis != null) {
                if (httpVersion == io.micronaut.http.HttpVersion.HTTP_2_0) {
                    Http2SettingsHandler settingsHandler = (Http2SettingsHandler) ctx.pipeline().get(HANDLER_HTTP2_SETTINGS);
                    if (settingsHandler != null) {
                        addInstrumentedListener(settingsHandler.promise, future -> {
                            if (future.isSuccess()) {
                                pipeline.addBefore(ChannelPipelineCustomizer.HANDLER_HTTP2_CONNECTION, ChannelPipelineCustomizer.HANDLER_READ_TIMEOUT, new ReadTimeoutHandler(readTimeoutMillis, TimeUnit.MILLISECONDS));
                            }
                        });
                    } else {
                        pipeline.addBefore(ChannelPipelineCustomizer.HANDLER_HTTP2_CONNECTION, ChannelPipelineCustomizer.HANDLER_READ_TIMEOUT, new ReadTimeoutHandler(readTimeoutMillis, TimeUnit.MILLISECONDS));
                    }
                } else {
                    pipeline.addBefore(ChannelPipelineCustomizer.HANDLER_HTTP_CLIENT_CODEC, ChannelPipelineCustomizer.HANDLER_READ_TIMEOUT, new ReadTimeoutHandler(readTimeoutMillis, TimeUnit.MILLISECONDS));
                }
            }
        }

        @Override
        public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
            try {
                if (complete.compareAndSet(false, true)) {
                    String message = cause.getMessage();
                    if (message == null) {
                        message = cause.getClass().getSimpleName();
                    }
                    if (log.isTraceEnabled()) {
                        log.trace("HTTP Client exception ({}) occurred for request : {} {}", message, request.getMethodName(), request.getUri());
                    }
                    if (cause instanceof TooLongFrameException) {
                        if (!emitter.isCancelled()) {
                            emitter.error(new ContentLengthExceededException(configuration.getMaxContentLength()));
                        }
                    } else if (cause instanceof io.netty.handler.timeout.ReadTimeoutException) {
                        if (!emitter.isCancelled()) {
                            emitter.error(ReadTimeoutException.TIMEOUT_EXCEPTION);
                        }
                    } else {
                        if (!emitter.isCancelled()) {
                            emitter.error(new HttpClientException("Error occurred reading HTTP response: " + message, cause));
                        }
                    }
                }
            } finally {
                keepAlive = false;
                pipeline.remove(this);
            }
        }
    };
    pipeline.addLast(ChannelPipelineCustomizer.HANDLER_MICRONAUT_FULL_HTTP_RESPONSE, newHandler);
}
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Aggregations

HttpStatus (io.micronaut.http.HttpStatus)11 HttpResponse (io.micronaut.http.HttpResponse)5 MutableHttpResponse (io.micronaut.http.MutableHttpResponse)5 Flux (reactor.core.publisher.Flux)5 Internal (io.micronaut.core.annotation.Internal)4 NonNull (io.micronaut.core.annotation.NonNull)4 MediaType (io.micronaut.http.MediaType)4 MutableHttpHeaders (io.micronaut.http.MutableHttpHeaders)4 AbstractNettyHttpRequest (io.micronaut.http.netty.AbstractNettyHttpRequest)4 Nullable (io.micronaut.core.annotation.Nullable)3 Publishers (io.micronaut.core.async.publisher.Publishers)3 ByteBuffer (io.micronaut.core.io.buffer.ByteBuffer)3 ReferenceCounted (io.micronaut.core.io.buffer.ReferenceCounted)3 Argument (io.micronaut.core.type.Argument)3 HttpMethod (io.micronaut.http.HttpMethod)3 HttpRequest (io.micronaut.http.HttpRequest)3 ServerRequestContext (io.micronaut.http.context.ServerRequestContext)3 JsonSubscriber (io.micronaut.http.netty.stream.JsonSubscriber)3 StreamedHttpRequest (io.micronaut.http.netty.stream.StreamedHttpRequest)3 MethodBasedRouteMatch (io.micronaut.web.router.MethodBasedRouteMatch)3