org.springframework.http.server.reactive.ReactorHttpHandlerAdapter Maven / Gradle / Ivy
/*
* 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
*
* http://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 org.apache.commons.logging.LogFactory;
import reactor.core.publisher.Mono;
import reactor.ipc.netty.http.server.HttpServerRequest;
import reactor.ipc.netty.http.server.HttpServerResponse;
import org.springframework.core.io.buffer.NettyDataBufferFactory;
import org.springframework.http.HttpMethod;
import org.springframework.util.Assert;
/**
* Adapt {@link HttpHandler} to the Reactor Netty channel handling function.
*
* @author Stephane Maldini
* @since 5.0
*/
public class ReactorHttpHandlerAdapter
implements BiFunction> {
private static final Log logger = LogFactory.getLog(ReactorHttpHandlerAdapter.class);
private final HttpHandler httpHandler;
public ReactorHttpHandlerAdapter(HttpHandler httpHandler) {
Assert.notNull(httpHandler, "HttpHandler must not be null");
this.httpHandler = httpHandler;
}
@Override
public Mono apply(HttpServerRequest request, HttpServerResponse response) {
NettyDataBufferFactory bufferFactory = new NettyDataBufferFactory(response.alloc());
ServerHttpRequest adaptedRequest;
ServerHttpResponse adaptedResponse;
try {
adaptedRequest = new ReactorServerHttpRequest(request, bufferFactory);
adaptedResponse = new ReactorServerHttpResponse(response, bufferFactory);
}
catch (URISyntaxException ex) {
logger.error("Invalid URL " + ex.getMessage(), ex);
response.status(HttpResponseStatus.BAD_REQUEST);
return Mono.empty();
}
if (adaptedRequest.getMethod() == HttpMethod.HEAD) {
adaptedResponse = new HttpHeadResponseDecorator(adaptedResponse);
}
return this.httpHandler.handle(adaptedRequest, adaptedResponse)
.doOnError(ex -> logger.error("Handling completed with error", ex))
.doOnSuccess(aVoid -> logger.debug("Handling completed with success"));
}
}