spring ReactorHttpHandlerAdapter 源码
spring ReactorHttpHandlerAdapter 代码
文件路径：/spring-web/src/main/java/org/springframework/http/server/reactive/ReactorHttpHandlerAdapter.java
/*
* Copyright 2002-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.http.server.reactive;
import java.net.URISyntaxException;
import java.util.function.BiFunction;
import io.netty.handler.codec.http.HttpResponseStatus;
import org.apache.commons.logging.Log;
import reactor.core.publisher.Mono;
import reactor.netty.http.server.HttpServerRequest;
import reactor.netty.http.server.HttpServerResponse;
import org.springframework.core.io.buffer.NettyDataBufferFactory;
import org.springframework.http.HttpLogging;
import org.springframework.http.HttpMethod;
import org.springframework.util.Assert;
/**
* Adapt {@link HttpHandler} to the Reactor Netty channel handling function.
*
* @author Stephane Maldini
* @author Rossen Stoyanchev
* @since 5.0
*/
public class ReactorHttpHandlerAdapter implements BiFunction<HttpServerRequest, HttpServerResponse, Mono<Void>> {
private static final Log logger = HttpLogging.forLogName(ReactorHttpHandlerAdapter.class);
private final HttpHandler httpHandler;
public ReactorHttpHandlerAdapter(HttpHandler httpHandler) {
Assert.notNull(httpHandler, "HttpHandler must not be null");
this.httpHandler = httpHandler;
}
@Override
public Mono<Void> apply(HttpServerRequest reactorRequest, HttpServerResponse reactorResponse) {
NettyDataBufferFactory bufferFactory = new NettyDataBufferFactory(reactorResponse.alloc());
try {
ReactorServerHttpRequest request = new ReactorServerHttpRequest(reactorRequest, bufferFactory);
ServerHttpResponse response = new ReactorServerHttpResponse(reactorResponse, bufferFactory);
if (request.getMethod() == HttpMethod.HEAD) {
response = new HttpHeadResponseDecorator(response);
}
return this.httpHandler.handle(request, response)
.doOnError(ex -> logger.trace(request.getLogPrefix() + "Failed to complete: " + ex.getMessage()))
.doOnSuccess(aVoid -> logger.trace(request.getLogPrefix() + "Handling completed"));
}
catch (URISyntaxException ex) {
if (logger.isDebugEnabled()) {
logger.debug("Failed to get request URI: " + ex.getMessage());
}
reactorResponse.status(HttpResponseStatus.BAD_REQUEST);
return Mono.empty();
}
}
}
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