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/*
* 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.mock.http.client.reactive;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.Collection;
import org.reactivestreams.Publisher;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.io.buffer.DataBufferFactory;
import org.springframework.core.io.buffer.DataBufferUtils;
import org.springframework.core.io.buffer.DefaultDataBufferFactory;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseCookie;
import org.springframework.http.client.reactive.ClientHttpResponse;
import org.springframework.util.Assert;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
/**
* Mock implementation of {@link ClientHttpResponse}.
*
* @author Brian Clozel
* @author Rossen Stoyanchev
* @since 5.0
*/
public class MockClientHttpResponse implements ClientHttpResponse {
private final int status;
private final HttpHeaders headers = new HttpHeaders();
private final MultiValueMap cookies = new LinkedMultiValueMap<>();
private Flux body = Flux.empty();
private final DataBufferFactory bufferFactory = new DefaultDataBufferFactory();
public MockClientHttpResponse(HttpStatus status) {
Assert.notNull(status, "HttpStatus is required");
this.status = status.value();
}
public MockClientHttpResponse(int status) {
Assert.isTrue(status >= 100 && status < 600, "Status must be between 1xx and 5xx");
this.status = status;
}
@Override
public HttpStatus getStatusCode() {
return HttpStatus.valueOf(this.status);
}
@Override
public int getRawStatusCode() {
return this.status;
}
@Override
public HttpHeaders getHeaders() {
if (!getCookies().isEmpty() && this.headers.get(HttpHeaders.SET_COOKIE) == null) {
getCookies().values().stream().flatMap(Collection::stream)
.forEach(cookie -> getHeaders().add(HttpHeaders.SET_COOKIE, cookie.toString()));
}
return this.headers;
}
@Override
public MultiValueMap getCookies() {
return this.cookies;
}
public void setBody(Publisher body) {
this.body = Flux.from(body);
}
public void setBody(String body) {
setBody(body, StandardCharsets.UTF_8);
}
public void setBody(String body, Charset charset) {
DataBuffer buffer = toDataBuffer(body, charset);
this.body = Flux.just(buffer);
}
private DataBuffer toDataBuffer(String body, Charset charset) {
byte[] bytes = body.getBytes(charset);
ByteBuffer byteBuffer = ByteBuffer.wrap(bytes);
return this.bufferFactory.wrap(byteBuffer);
}
@Override
public Flux getBody() {
return this.body;
}
/**
* Return the response body aggregated and converted to a String using the
* charset of the Content-Type response or otherwise as "UTF-8".
*/
public Mono getBodyAsString() {
Charset charset = getCharset();
return Flux.from(getBody())
.reduce(this.bufferFactory.allocateBuffer(), (previous, current) -> {
previous.write(current);
DataBufferUtils.release(current);
return previous;
})
.map(buffer -> dumpString(buffer, charset));
}
private static String dumpString(DataBuffer buffer, Charset charset) {
Assert.notNull(charset, "'charset' must not be null");
byte[] bytes = new byte[buffer.readableByteCount()];
buffer.read(bytes);
return new String(bytes, charset);
}
private Charset getCharset() {
Charset charset = null;
MediaType contentType = getHeaders().getContentType();
if (contentType != null) {
charset = contentType.getCharset();
}
return (charset != null ? charset : StandardCharsets.UTF_8);
}
}