org.springframework.http.client.reactive.JdkClientHttpConnector Maven / Gradle / Ivy
/*
* Copyright 2002-2021 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.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.Executor;
import java.util.concurrent.Flow;
import java.util.function.Function;
import reactor.core.publisher.Mono;
import org.springframework.core.io.buffer.DataBufferFactory;
import org.springframework.core.io.buffer.DefaultDataBufferFactory;
import org.springframework.http.HttpMethod;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
/**
* {@link ClientHttpConnector} for the Java {@link HttpClient}.
*
* @author Julien Eyraud
* @author Rossen Stoyanchev
* @since 6.0
* @see HttpClient
*/
public class JdkClientHttpConnector implements ClientHttpConnector {
private final HttpClient httpClient;
private DataBufferFactory bufferFactory = DefaultDataBufferFactory.sharedInstance;
/**
* Default constructor that uses {@link HttpClient#newHttpClient()}.
*/
public JdkClientHttpConnector() {
this(HttpClient.newHttpClient());
}
/**
* Constructor with an initialized {@link HttpClient} and a {@link DataBufferFactory}.
*/
public JdkClientHttpConnector(HttpClient httpClient) {
this.httpClient = httpClient;
}
/**
* Constructor with a {@link JdkHttpClientResourceFactory} that provides
* shared resources.
* @param clientBuilder a pre-initialized builder for the client that will
* be further initialized with the shared resources to use
* @param resourceFactory the {@link JdkHttpClientResourceFactory} to use
*/
public JdkClientHttpConnector(
HttpClient.Builder clientBuilder, @Nullable JdkHttpClientResourceFactory resourceFactory) {
if (resourceFactory != null) {
Executor executor = resourceFactory.getExecutor();
clientBuilder.executor(executor);
}
this.httpClient = clientBuilder.build();
}
/**
* Set the buffer factory to use.
* By default, this is {@link DefaultDataBufferFactory#sharedInstance}.
*/
public void setBufferFactory(DataBufferFactory bufferFactory) {
Assert.notNull(bufferFactory, "DataBufferFactory is required");
this.bufferFactory = bufferFactory;
}
@Override
public Mono connect(
HttpMethod method, URI uri, Function> requestCallback) {
JdkClientHttpRequest jdkClientHttpRequest = new JdkClientHttpRequest(method, uri, this.bufferFactory);
return requestCallback.apply(jdkClientHttpRequest).then(Mono.defer(() -> {
HttpRequest httpRequest = jdkClientHttpRequest.getNativeRequest();
CompletableFuture>>> future =
this.httpClient.sendAsync(httpRequest, HttpResponse.BodyHandlers.ofPublisher());
return Mono.fromCompletionStage(future)
.map(response -> new JdkClientHttpResponse(response, this.bufferFactory));
}));
}
}