/*
* 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.test.web.reactive.server;
import java.net.URI;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicReference;
import java.util.function.Function;
import reactor.core.publisher.Mono;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.client.reactive.ClientHttpConnector;
import org.springframework.http.client.reactive.ClientHttpRequest;
import org.springframework.http.client.reactive.ClientHttpResponse;
import org.springframework.util.Assert;
/**
* Decorate another {@link ClientHttpConnector} with the purpose of
* intercepting, capturing, and exposing actual request and response data
* transmitted to and received from the server.
*
* @author Rossen Stoyanchev
* @since 5.0
* @see HttpHandlerConnector
*/
class WiretapConnector implements ClientHttpConnector {
public static final String REQUEST_ID_HEADER_NAME = "webtestclient-request-id";
private final ClientHttpConnector delegate;
private final Map<String, ExchangeResult> exchanges = new ConcurrentHashMap<>();
public WiretapConnector(ClientHttpConnector delegate) {
this.delegate = delegate;
}
@Override
public Mono<ClientHttpResponse> connect(HttpMethod method, URI uri,
Function<? super ClientHttpRequest, Mono<Void>> requestCallback) {
AtomicReference<WiretapClientHttpRequest> requestRef = new AtomicReference<>();
return this.delegate
.connect(method, uri, request -> {
WiretapClientHttpRequest wrapped = new WiretapClientHttpRequest(request);
requestRef.set(wrapped);
return requestCallback.apply(wrapped);
})
.map(response -> {
WiretapClientHttpRequest wrappedRequest = requestRef.get();
String requestId = getRequestIdHeader(wrappedRequest.getHeaders());
WiretapClientHttpResponse wrappedResponse = new WiretapClientHttpResponse(response);
ExchangeResult result = new ExchangeResult(wrappedRequest, wrappedResponse);
this.exchanges.put(requestId, result);
return wrappedResponse;
});
}
public static String getRequestIdHeader(HttpHeaders headers) {
String requestId = headers.getFirst(REQUEST_ID_HEADER_NAME);
Assert.notNull(requestId, "No \"" + REQUEST_ID_HEADER_NAME + "\" header");
return requestId;
}
/**
* Retrieve the {@code ExchangeResult} for the given "request-id" header value.
*/
public ExchangeResult claimRequest(String requestId) {
ExchangeResult result = this.exchanges.get(requestId);
Assert.notNull(result, "No match for request with header " + REQUEST_ID_HEADER_NAME + "=" + requestId);
return result;
}
}