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HttpComponentsClientHttpRequest.java
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HttpComponentsClientHttpRequest.java
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/*
* Copyright 2002-2023 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.io.InputStream;
import java.io.OutputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;
import java.util.Set;
import org.apache.hc.client5.http.classic.HttpClient;
import org.apache.hc.core5.function.Supplier;
import org.apache.hc.core5.http.ClassicHttpRequest;
import org.apache.hc.core5.http.ClassicHttpResponse;
import org.apache.hc.core5.http.Header;
import org.apache.hc.core5.http.HttpEntity;
import org.apache.hc.core5.http.protocol.HttpContext;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.lang.Nullable;
import org.springframework.util.StringUtils;
/**
* {@link ClientHttpRequest} implementation based on
* Apache HttpComponents HttpClient.
*
* <p>Created via the {@link HttpComponentsClientHttpRequestFactory}.
*
* @author Oleg Kalnichevski
* @author Arjen Poutsma
* @author Juergen Hoeller
* @since 3.1
* @see HttpComponentsClientHttpRequestFactory#createRequest(URI, HttpMethod)
*/
final class HttpComponentsClientHttpRequest extends AbstractStreamingClientHttpRequest {
private final HttpClient httpClient;
private final ClassicHttpRequest httpRequest;
private final HttpContext httpContext;
HttpComponentsClientHttpRequest(HttpClient client, ClassicHttpRequest request, HttpContext context) {
this.httpClient = client;
this.httpRequest = request;
this.httpContext = context;
}
@Override
public HttpMethod getMethod() {
return HttpMethod.valueOf(this.httpRequest.getMethod());
}
@Override
public URI getURI() {
try {
return this.httpRequest.getUri();
}
catch (URISyntaxException ex) {
throw new IllegalStateException(ex.getMessage(), ex);
}
}
HttpContext getHttpContext() {
return this.httpContext;
}
@SuppressWarnings("deprecation") // execute(ClassicHttpRequest, HttpContext)
@Override
protected ClientHttpResponse executeInternal(HttpHeaders headers, @Nullable Body body) throws IOException {
addHeaders(this.httpRequest, headers);
if (body != null) {
HttpEntity requestEntity = new BodyEntity(headers, body);
this.httpRequest.setEntity(requestEntity);
}
ClassicHttpResponse httpResponse = this.httpClient.executeOpen(null, this.httpRequest, this.httpContext);
return new HttpComponentsClientHttpResponse(httpResponse);
}
/**
* Add the given headers to the given HTTP request.
* @param httpRequest the request to add the headers to
* @param headers the headers to add
*/
static void addHeaders(ClassicHttpRequest httpRequest, HttpHeaders headers) {
headers.forEach((headerName, headerValues) -> {
if (HttpHeaders.COOKIE.equalsIgnoreCase(headerName)) { // RFC 6265
String headerValue = StringUtils.collectionToDelimitedString(headerValues, "; ");
httpRequest.addHeader(headerName, headerValue);
}
else if (!HttpHeaders.CONTENT_LENGTH.equalsIgnoreCase(headerName) &&
!HttpHeaders.TRANSFER_ENCODING.equalsIgnoreCase(headerName)) {
for (String headerValue : headerValues) {
httpRequest.addHeader(headerName, headerValue);
}
}
});
}
private static class BodyEntity implements HttpEntity {
private final HttpHeaders headers;
private final Body body;
public BodyEntity(HttpHeaders headers, Body body) {
this.headers = headers;
this.body = body;
}
@Override
public long getContentLength() {
return this.headers.getContentLength();
}
@Override
@Nullable
public String getContentType() {
return this.headers.getFirst(HttpHeaders.CONTENT_TYPE);
}
@Override
public InputStream getContent() {
throw new UnsupportedOperationException();
}
@Override
public void writeTo(OutputStream outStream) throws IOException {
this.body.writeTo(outStream);
}
@Override
public boolean isRepeatable() {
return false;
}
@Override
public boolean isStreaming() {
return true;
}
@Override
@Nullable
public Supplier<List<? extends Header>> getTrailers() {
return null;
}
@Override
@Nullable
public String getContentEncoding() {
return this.headers.getFirst(HttpHeaders.CONTENT_ENCODING);
}
@Override
public boolean isChunked() {
return false;
}
@Override
@Nullable
public Set<String> getTrailerNames() {
return null;
}
@Override
public void close() {
}
}
}