org.springframework.http.server.reactive.ReactorServerHttpResponse Maven / Gradle / Ivy
/*
* Copyright 2002-2019 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.nio.file.Path;
import java.util.List;
import io.netty.buffer.ByteBuf;
import org.reactivestreams.Publisher;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import reactor.netty.http.server.HttpServerResponse;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.io.buffer.DataBufferFactory;
import org.springframework.core.io.buffer.NettyDataBufferFactory;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseCookie;
import org.springframework.http.ZeroCopyHttpOutputMessage;
import org.springframework.util.Assert;
/**
* Adapt {@link ServerHttpResponse} to the {@link HttpServerResponse}.
*
* @author Stephane Maldini
* @author Rossen Stoyanchev
* @since 5.0
*/
class ReactorServerHttpResponse extends AbstractServerHttpResponse implements ZeroCopyHttpOutputMessage {
private final HttpServerResponse response;
public ReactorServerHttpResponse(HttpServerResponse response, DataBufferFactory bufferFactory) {
super(bufferFactory, new HttpHeaders(new NettyHeadersAdapter(response.responseHeaders())));
Assert.notNull(response, "HttpServerResponse must not be null");
this.response = response;
}
@SuppressWarnings("unchecked")
@Override
public T getNativeResponse() {
return (T) this.response;
}
@Override
public HttpStatus getStatusCode() {
HttpStatus httpStatus = super.getStatusCode();
return (httpStatus != null ? httpStatus : HttpStatus.resolve(this.response.status().code()));
}
@Override
protected void applyStatusCode() {
Integer statusCode = getStatusCodeValue();
if (statusCode != null) {
this.response.status(statusCode);
}
}
@Override
protected Mono writeWithInternal(Publisher publisher) {
return this.response.send(toByteBufs(publisher)).then();
}
@Override
protected Mono writeAndFlushWithInternal(Publisher> publisher) {
return this.response.sendGroups(Flux.from(publisher).map(this::toByteBufs)).then();
}
@Override
protected void applyHeaders() {
}
@Override
protected void applyCookies() {
// Netty Cookie doesn't support sameSite. When this is resolved, we can adapt to it again:
// https://github.com/netty/netty/issues/8161
for (List cookies : getCookies().values()) {
for (ResponseCookie cookie : cookies) {
this.response.addHeader(HttpHeaders.SET_COOKIE, cookie.toString());
}
}
}
@Override
public Mono writeWith(Path file, long position, long count) {
return doCommit(() -> this.response.sendFile(file, position, count).then());
}
private Publisher toByteBufs(Publisher dataBuffers) {
return dataBuffers instanceof Mono ?
Mono.from(dataBuffers).map(NettyDataBufferFactory::toByteBuf) :
Flux.from(dataBuffers).map(NettyDataBufferFactory::toByteBuf);
}
}