org.springframework.http.client.reactive.ReactorClientHttpRequest 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.client.reactive;
import java.net.URI;
import java.nio.file.Path;
import java.util.Collection;
import io.netty.buffer.ByteBuf;
import io.netty.handler.codec.http.cookie.DefaultCookie;
import org.reactivestreams.Publisher;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import reactor.netty.NettyOutbound;
import reactor.netty.http.client.HttpClientRequest;
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.HttpMethod;
import org.springframework.http.ZeroCopyHttpOutputMessage;
/**
* {@link ClientHttpRequest} implementation for the Reactor-Netty HTTP client.
*
* @author Brian Clozel
* @since 5.0
* @see reactor.netty.http.client.HttpClient
*/
class ReactorClientHttpRequest extends AbstractClientHttpRequest implements ZeroCopyHttpOutputMessage {
private final HttpMethod httpMethod;
private final URI uri;
private final HttpClientRequest request;
private final NettyOutbound outbound;
private final NettyDataBufferFactory bufferFactory;
public ReactorClientHttpRequest(HttpMethod method, URI uri, HttpClientRequest request, NettyOutbound outbound) {
this.httpMethod = method;
this.uri = uri;
this.request = request;
this.outbound = outbound;
this.bufferFactory = new NettyDataBufferFactory(outbound.alloc());
}
@Override
public DataBufferFactory bufferFactory() {
return this.bufferFactory;
}
@Override
public HttpMethod getMethod() {
return this.httpMethod;
}
@Override
public URI getURI() {
return this.uri;
}
@Override
public Mono writeWith(Publisher body) {
return doCommit(() -> {
// Send as Mono if possible as an optimization hint to Reactor Netty
if (body instanceof Mono) {
Mono byteBufMono = Mono.from(body).map(NettyDataBufferFactory::toByteBuf);
return this.outbound.send(byteBufMono).then();
}
else {
Flux byteBufFlux = Flux.from(body).map(NettyDataBufferFactory::toByteBuf);
return this.outbound.send(byteBufFlux).then();
}
});
}
@Override
public Mono writeAndFlushWith(Publisher> body) {
Publisher> byteBufs = Flux.from(body).map(ReactorClientHttpRequest::toByteBufs);
return doCommit(() -> this.outbound.sendGroups(byteBufs).then());
}
private static Publisher toByteBufs(Publisher dataBuffers) {
return Flux.from(dataBuffers).map(NettyDataBufferFactory::toByteBuf);
}
@Override
public Mono writeWith(Path file, long position, long count) {
return doCommit(() -> this.outbound.sendFile(file, position, count).then());
}
@Override
public Mono setComplete() {
return doCommit(this.outbound::then);
}
@Override
protected void applyHeaders() {
getHeaders().forEach((key, value) -> this.request.requestHeaders().set(key, value));
}
@Override
protected void applyCookies() {
getCookies().values().stream().flatMap(Collection::stream)
.map(cookie -> new DefaultCookie(cookie.getName(), cookie.getValue()))
.forEach(this.request::addCookie);
}
}