org.springframework.http.client.SimpleBufferingAsyncClientHttpRequest Maven / Gradle / Ivy
/*
* Copyright 2002-2020 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;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.URISyntaxException;
import org.springframework.core.task.AsyncListenableTaskExecutor;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.util.FileCopyUtils;
import org.springframework.util.concurrent.ListenableFuture;
/**
* {@link org.springframework.http.client.ClientHttpRequest} implementation that uses
* standard JDK facilities to execute buffered requests. Created via the
* {@link org.springframework.http.client.SimpleClientHttpRequestFactory}.
*
* @author Arjen Poutsma
* @since 3.0
* @see org.springframework.http.client.SimpleClientHttpRequestFactory#createRequest
* @deprecated as of Spring 5.0, with no direct replacement
*/
@Deprecated
final class SimpleBufferingAsyncClientHttpRequest extends AbstractBufferingAsyncClientHttpRequest {
private final HttpURLConnection connection;
private final boolean outputStreaming;
private final AsyncListenableTaskExecutor taskExecutor;
SimpleBufferingAsyncClientHttpRequest(HttpURLConnection connection,
boolean outputStreaming, AsyncListenableTaskExecutor taskExecutor) {
this.connection = connection;
this.outputStreaming = outputStreaming;
this.taskExecutor = taskExecutor;
}
@Override
public String getMethodValue() {
return this.connection.getRequestMethod();
}
@Override
public URI getURI() {
try {
return this.connection.getURL().toURI();
}
catch (URISyntaxException ex) {
throw new IllegalStateException("Could not get HttpURLConnection URI: " + ex.getMessage(), ex);
}
}
@Override
protected ListenableFuture executeInternal(
HttpHeaders headers, byte[] bufferedOutput) throws IOException {
return this.taskExecutor.submitListenable(() -> {
SimpleBufferingClientHttpRequest.addHeaders(this.connection, headers);
// JDK <1.8 doesn't support getOutputStream with HTTP DELETE
if (getMethod() == HttpMethod.DELETE && bufferedOutput.length == 0) {
this.connection.setDoOutput(false);
}
if (this.connection.getDoOutput() && outputStreaming) {
this.connection.setFixedLengthStreamingMode(bufferedOutput.length);
}
this.connection.connect();
if (this.connection.getDoOutput()) {
FileCopyUtils.copy(bufferedOutput, this.connection.getOutputStream());
}
else {
// Immediately trigger the request in a no-output scenario as well
this.connection.getResponseCode();
}
return new SimpleClientHttpResponse(this.connection);
});
}
}