List of usage examples for org.springframework.core ReactiveAdapter isMultiValue
public boolean isMultiValue()
From source file:org.springframework.cloud.function.web.RequestProcessor.java
private Publisher<?> body(Object handler, ServerWebExchange exchange) { ResolvableType elementType = ResolvableType.forClass(this.inspector.getInputType(handler)); ResolvableType actualType = elementType; Class<?> resolvedType = elementType.resolve(); ReactiveAdapter adapter = (resolvedType != null ? getAdapterRegistry().getAdapter(resolvedType) : null); ServerHttpRequest request = exchange.getRequest(); ServerHttpResponse response = exchange.getResponse(); MediaType contentType = request.getHeaders().getContentType(); MediaType mediaType = (contentType != null ? contentType : MediaType.APPLICATION_OCTET_STREAM); if (logger.isDebugEnabled()) { logger.debug(exchange.getLogPrefix() + (contentType != null ? "Content-Type:" + contentType : "No Content-Type, using " + MediaType.APPLICATION_OCTET_STREAM)); }//from www. j av a2s . c om boolean isBodyRequired = (adapter != null && !adapter.supportsEmpty()); MethodParameter bodyParam = new MethodParameter(handlerMethod(handler), 0); for (HttpMessageReader<?> reader : getMessageReaders()) { if (reader.canRead(elementType, mediaType)) { Map<String, Object> readHints = Hints.from(Hints.LOG_PREFIX_HINT, exchange.getLogPrefix()); if (adapter != null && adapter.isMultiValue()) { if (logger.isDebugEnabled()) { logger.debug(exchange.getLogPrefix() + "0..N [" + elementType + "]"); } Flux<?> flux = reader.read(actualType, elementType, request, response, readHints); flux = flux.onErrorResume(ex -> Flux.error(handleReadError(bodyParam, ex))); if (isBodyRequired) { flux = flux.switchIfEmpty(Flux.error(() -> handleMissingBody(bodyParam))); } return Mono.just(adapter.fromPublisher(flux)); } else { // Single-value (with or without reactive type wrapper) if (logger.isDebugEnabled()) { logger.debug(exchange.getLogPrefix() + "0..1 [" + elementType + "]"); } Mono<?> mono = reader.readMono(actualType, elementType, request, response, readHints); mono = mono.onErrorResume(ex -> Mono.error(handleReadError(bodyParam, ex))); if (isBodyRequired) { mono = mono.switchIfEmpty(Mono.error(() -> handleMissingBody(bodyParam))); } return (adapter != null ? Mono.just(adapter.fromPublisher(mono)) : Mono.from(mono)); } } } return Mono.error(new UnsupportedMediaTypeStatusException(mediaType, Arrays.asList(MediaType.APPLICATION_JSON), elementType)); }
From source file:org.springframework.messaging.handler.annotation.reactive.PayloadMethodArgumentResolver.java
private Mono<Object> decodeContent(MethodParameter parameter, Message<?> message, boolean isContentRequired, Flux<DataBuffer> content, MimeType mimeType) { ResolvableType targetType = ResolvableType.forMethodParameter(parameter); Class<?> resolvedType = targetType.resolve(); ReactiveAdapter adapter = (resolvedType != null ? getAdapterRegistry().getAdapter(resolvedType) : null); ResolvableType elementType = (adapter != null ? targetType.getGeneric() : targetType); isContentRequired = isContentRequired || (adapter != null && !adapter.supportsEmpty()); Consumer<Object> validator = getValidator(message, parameter); Map<String, Object> hints = Collections.emptyMap(); for (Decoder<?> decoder : this.decoders) { if (decoder.canDecode(elementType, mimeType)) { if (adapter != null && adapter.isMultiValue()) { Flux<?> flux = content.map(buffer -> decoder.decode(buffer, elementType, mimeType, hints)) .onErrorResume(ex -> Flux.error(handleReadError(parameter, message, ex))); if (isContentRequired) { flux = flux.switchIfEmpty(Flux.error(() -> handleMissingBody(parameter, message))); }/*from w w w . j a v a 2 s. c om*/ if (validator != null) { flux = flux.doOnNext(validator); } return Mono.just(adapter.fromPublisher(flux)); } else { // Single-value (with or without reactive type wrapper) Mono<?> mono = content.next() .map(buffer -> decoder.decode(buffer, elementType, mimeType, hints)) .onErrorResume(ex -> Mono.error(handleReadError(parameter, message, ex))); if (isContentRequired) { mono = mono.switchIfEmpty(Mono.error(() -> handleMissingBody(parameter, message))); } if (validator != null) { mono = mono.doOnNext(validator); } return (adapter != null ? Mono.just(adapter.fromPublisher(mono)) : Mono.from(mono)); } } } return Mono.error(new MethodArgumentResolutionException(message, parameter, "Cannot decode to [" + targetType + "]" + message)); }
From source file:org.springframework.messaging.handler.annotation.support.reactive.PayloadMethodArgumentResolver.java
private Mono<Object> decodeContent(MethodParameter parameter, Message<?> message, boolean isContentRequired, Flux<DataBuffer> content, MimeType mimeType) { ResolvableType targetType = ResolvableType.forMethodParameter(parameter); Class<?> resolvedType = targetType.resolve(); ReactiveAdapter adapter = (resolvedType != null ? getAdapterRegistry().getAdapter(resolvedType) : null); ResolvableType elementType = (adapter != null ? targetType.getGeneric() : targetType); isContentRequired = isContentRequired || (adapter != null && !adapter.supportsEmpty()); Consumer<Object> validator = getValidator(message, parameter); Map<String, Object> hints = Collections.emptyMap(); for (Decoder<?> decoder : this.decoders) { if (decoder.canDecode(elementType, mimeType)) { if (adapter != null && adapter.isMultiValue()) { Flux<?> flux = content .concatMap(buffer -> decoder.decode(Mono.just(buffer), elementType, mimeType, hints)) .onErrorResume(ex -> Flux.error(handleReadError(parameter, message, ex))); if (isContentRequired) { flux = flux.switchIfEmpty(Flux.error(() -> handleMissingBody(parameter, message))); }/*from w w w .j a v a 2 s. c o m*/ if (validator != null) { flux = flux.doOnNext(validator::accept); } return Mono.just(adapter.fromPublisher(flux)); } else { // Single-value (with or without reactive type wrapper) Mono<?> mono = decoder.decodeToMono(content.next(), targetType, mimeType, hints) .onErrorResume(ex -> Mono.error(handleReadError(parameter, message, ex))); if (isContentRequired) { mono = mono.switchIfEmpty(Mono.error(() -> handleMissingBody(parameter, message))); } if (validator != null) { mono = mono.doOnNext(validator::accept); } return (adapter != null ? Mono.just(adapter.fromPublisher(mono)) : Mono.from(mono)); } } } return Mono.error(new MethodArgumentResolutionException(message, parameter, "Cannot decode to [" + targetType + "]" + message)); }
From source file:org.springframework.web.reactive.result.view.AbstractView.java
/** * By default, resolve async attributes supported by the * {@link ReactiveAdapterRegistry} to their blocking counterparts. * <p>View implementations capable of taking advantage of reactive types * can override this method if needed.// w w w . j a v a 2 s . com * @return {@code Mono} for the completion of async attributes resolution */ protected Mono<Void> resolveAsyncAttributes(Map<String, Object> model) { List<String> names = new ArrayList<>(); List<Mono<?>> valueMonos = new ArrayList<>(); for (Map.Entry<String, ?> entry : model.entrySet()) { Object value = entry.getValue(); if (value == null) { continue; } ReactiveAdapter adapter = this.adapterRegistry.getAdapter(null, value); if (adapter != null) { names.add(entry.getKey()); if (adapter.isMultiValue()) { Flux<Object> fluxValue = Flux.from(adapter.toPublisher(value)); valueMonos.add(fluxValue.collectList().defaultIfEmpty(Collections.emptyList())); } else { Mono<Object> monoValue = Mono.from(adapter.toPublisher(value)); valueMonos.add(monoValue.defaultIfEmpty(NO_VALUE)); } } } if (names.isEmpty()) { return Mono.empty(); } return Mono.zip(valueMonos, values -> { for (int i = 0; i < values.length; i++) { if (values[i] != NO_VALUE) { model.put(names.get(i), values[i]); } else { model.remove(names.get(i)); } } return NO_VALUE; }).then(); }
From source file:org.springframework.web.servlet.mvc.method.annotation.ReactiveTypeHandler.java
/** * Process the given reactive return value and decide whether to adapt it * to a {@link ResponseBodyEmitter} or a {@link DeferredResult}. * @return an emitter for streaming or {@code null} if handled internally * with a {@link DeferredResult}.// w ww.j a va2 s.com */ @Nullable public ResponseBodyEmitter handleValue(Object returnValue, MethodParameter returnType, ModelAndViewContainer mav, NativeWebRequest request) throws Exception { Assert.notNull(returnValue, "Expected return value"); ReactiveAdapter adapter = this.reactiveRegistry.getAdapter(returnValue.getClass()); Assert.state(adapter != null, "Unexpected return value: " + returnValue); ResolvableType elementType = ResolvableType.forMethodParameter(returnType).getGeneric(0); Class<?> elementClass = elementType.resolve(Object.class); Collection<MediaType> mediaTypes = getMediaTypes(request); Optional<MediaType> mediaType = mediaTypes.stream().filter(MimeType::isConcrete).findFirst(); if (adapter.isMultiValue()) { if (mediaTypes.stream().anyMatch(MediaType.TEXT_EVENT_STREAM::includes) || ServerSentEvent.class.isAssignableFrom(elementClass)) { SseEmitter emitter = new SseEmitter(STREAMING_TIMEOUT_VALUE); new SseEmitterSubscriber(emitter, this.taskExecutor).connect(adapter, returnValue); return emitter; } if (CharSequence.class.isAssignableFrom(elementClass)) { ResponseBodyEmitter emitter = getEmitter(mediaType.orElse(MediaType.TEXT_PLAIN)); new TextEmitterSubscriber(emitter, this.taskExecutor).connect(adapter, returnValue); return emitter; } if (mediaTypes.stream().anyMatch(MediaType.APPLICATION_STREAM_JSON::includes)) { ResponseBodyEmitter emitter = getEmitter(MediaType.APPLICATION_STREAM_JSON); new JsonEmitterSubscriber(emitter, this.taskExecutor).connect(adapter, returnValue); return emitter; } } // Not streaming... DeferredResult<Object> result = new DeferredResult<>(); new DeferredResultSubscriber(result, adapter, elementType).connect(adapter, returnValue); WebAsyncUtils.getAsyncManager(request).startDeferredResultProcessing(result, mav); return null; }