/*
* Copyright 2002-2017 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
*
* http://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.web.reactive.function.client;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.OptionalLong;
import java.util.function.Supplier;
import java.util.stream.Stream;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
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.http.codec.HttpMessageReader;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.util.MultiValueMap;
import org.springframework.web.reactive.function.BodyExtractor;
import org.springframework.web.reactive.function.BodyExtractors;
/**
* Default implementation of {@link ClientResponse}.
*
* @author Arjen Poutsma
* @since 5.0
*/
class DefaultClientResponse implements ClientResponse {
private final ClientHttpResponse response;
private final Headers headers;
private final ExchangeStrategies strategies;
public DefaultClientResponse(ClientHttpResponse response, ExchangeStrategies strategies) {
this.response = response;
this.strategies = strategies;
this.headers = new DefaultHeaders();
}
@Override
public HttpStatus statusCode() {
return this.response.getStatusCode();
}
@Override
public Headers headers() {
return this.headers;
}
@Override
public MultiValueMap<String, ResponseCookie> cookies() {
return this.response.getCookies();
}
@Override
public <T> T body(BodyExtractor<T, ? super ClientHttpResponse> extractor) {
return extractor.extract(this.response, new BodyExtractor.Context() {
@Override
public Supplier<Stream<HttpMessageReader<?>>> messageReaders() {
return strategies.messageReaders();
}
@Override
public Optional<ServerHttpResponse> serverResponse() {
return Optional.empty();
}
@Override
public Map<String, Object> hints() {
return Collections.emptyMap();
}
});
}
@Override
public <T> Mono<T> bodyToMono(Class<? extends T> elementClass) {
return body(BodyExtractors.toMono(elementClass));
}
@Override
public <T> Flux<T> bodyToFlux(Class<? extends T> elementClass) {
return body(BodyExtractors.toFlux(elementClass));
}
private class DefaultHeaders implements Headers {
private HttpHeaders delegate() {
return response.getHeaders();
}
@Override
public OptionalLong contentLength() {
return toOptionalLong(delegate().getContentLength());
}
@Override
public Optional<MediaType> contentType() {
return Optional.ofNullable(delegate().getContentType());
}
@Override
public List<String> header(String headerName) {
List<String> headerValues = delegate().get(headerName);
return headerValues != null ? headerValues : Collections.emptyList();
}
@Override
public HttpHeaders asHttpHeaders() {
return HttpHeaders.readOnlyHttpHeaders(delegate());
}
private OptionalLong toOptionalLong(long value) {
return value != -1 ? OptionalLong.of(value) : OptionalLong.empty();
}
}
}