/
DefaultWebTestClientBuilder.java
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/
DefaultWebTestClientBuilder.java
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/*
* Copyright 2002-2022 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.test.web.reactive.server;
import java.time.Duration;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.function.Consumer;
import java.util.function.Function;
import org.springframework.http.HttpHeaders;
import org.springframework.http.client.reactive.ClientHttpConnector;
import org.springframework.http.client.reactive.HttpComponentsClientHttpConnector;
import org.springframework.http.client.reactive.JdkClientHttpConnector;
import org.springframework.http.client.reactive.JettyClientHttpConnector;
import org.springframework.http.client.reactive.ReactorClientHttpConnector;
import org.springframework.http.client.reactive.ReactorNetty2ClientHttpConnector;
import org.springframework.http.codec.ClientCodecConfigurer;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;
import org.springframework.util.CollectionUtils;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.reactive.function.client.ExchangeFilterFunction;
import org.springframework.web.reactive.function.client.ExchangeFunction;
import org.springframework.web.reactive.function.client.ExchangeFunctions;
import org.springframework.web.reactive.function.client.ExchangeStrategies;
import org.springframework.web.server.adapter.WebHttpHandlerBuilder;
import org.springframework.web.util.DefaultUriBuilderFactory;
import org.springframework.web.util.UriBuilderFactory;
/**
* Default implementation of {@link WebTestClient.Builder}.
*
* @author Rossen Stoyanchev
* @since 5.0
*/
class DefaultWebTestClientBuilder implements WebTestClient.Builder {
private static final boolean reactorNettyClientPresent;
private static final boolean reactorNetty2ClientPresent;
private static final boolean jettyClientPresent;
private static final boolean httpComponentsClientPresent;
private static final boolean webFluxPresent;
static {
ClassLoader loader = DefaultWebTestClientBuilder.class.getClassLoader();
reactorNettyClientPresent = ClassUtils.isPresent("reactor.netty.http.client.HttpClient", loader);
reactorNetty2ClientPresent = ClassUtils.isPresent("reactor.netty5.http.client.HttpClient", loader);
jettyClientPresent = ClassUtils.isPresent("org.eclipse.jetty.client.HttpClient", loader);
httpComponentsClientPresent =
ClassUtils.isPresent("org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient", loader) &&
ClassUtils.isPresent("org.apache.hc.core5.reactive.ReactiveDataConsumer", loader);
webFluxPresent = ClassUtils.isPresent(
"org.springframework.web.reactive.function.client.ExchangeFunction", loader);
}
@Nullable
private final WebHttpHandlerBuilder httpHandlerBuilder;
@Nullable
private final ClientHttpConnector connector;
@Nullable
private String baseUrl;
@Nullable
private UriBuilderFactory uriBuilderFactory;
@Nullable
private HttpHeaders defaultHeaders;
@Nullable
private MultiValueMap<String, String> defaultCookies;
@Nullable
private List<ExchangeFilterFunction> filters;
private Consumer<EntityExchangeResult<?>> entityResultConsumer = result -> {};
@Nullable
private ExchangeStrategies strategies;
@Nullable
private List<Consumer<ExchangeStrategies.Builder>> strategiesConfigurers;
@Nullable
private Duration responseTimeout;
/** Determine connector via classpath detection. */
DefaultWebTestClientBuilder() {
this(null, null);
}
/** Use HttpHandlerConnector with mock server. */
DefaultWebTestClientBuilder(WebHttpHandlerBuilder httpHandlerBuilder) {
this(httpHandlerBuilder, null);
}
/** Use given connector. */
DefaultWebTestClientBuilder(ClientHttpConnector connector) {
this(null, connector);
}
DefaultWebTestClientBuilder(
@Nullable WebHttpHandlerBuilder httpHandlerBuilder, @Nullable ClientHttpConnector connector) {
Assert.isTrue(httpHandlerBuilder == null || connector == null,
"Expected WebHttpHandlerBuilder or ClientHttpConnector but not both.");
// Helpful message especially for MockMvcWebTestClient users
Assert.state(webFluxPresent,
"To use WebTestClient, please add spring-webflux to the test classpath.");
this.connector = connector;
this.httpHandlerBuilder = (httpHandlerBuilder != null ? httpHandlerBuilder.clone() : null);
}
/** Copy constructor. */
DefaultWebTestClientBuilder(DefaultWebTestClientBuilder other) {
this.httpHandlerBuilder = (other.httpHandlerBuilder != null ? other.httpHandlerBuilder.clone() : null);
this.connector = other.connector;
this.responseTimeout = other.responseTimeout;
this.baseUrl = other.baseUrl;
this.uriBuilderFactory = other.uriBuilderFactory;
if (other.defaultHeaders != null) {
this.defaultHeaders = new HttpHeaders();
this.defaultHeaders.putAll(other.defaultHeaders);
}
else {
this.defaultHeaders = null;
}
this.defaultCookies = (other.defaultCookies != null ?
new LinkedMultiValueMap<>(other.defaultCookies) : null);
this.filters = (other.filters != null ? new ArrayList<>(other.filters) : null);
this.entityResultConsumer = other.entityResultConsumer;
this.strategies = other.strategies;
this.strategiesConfigurers = (other.strategiesConfigurers != null ?
new ArrayList<>(other.strategiesConfigurers) : null);
}
@Override
public WebTestClient.Builder baseUrl(String baseUrl) {
this.baseUrl = baseUrl;
return this;
}
@Override
public WebTestClient.Builder uriBuilderFactory(UriBuilderFactory uriBuilderFactory) {
this.uriBuilderFactory = uriBuilderFactory;
return this;
}
@Override
public WebTestClient.Builder defaultHeader(String header, String... values) {
initHeaders().put(header, Arrays.asList(values));
return this;
}
@Override
public WebTestClient.Builder defaultHeaders(Consumer<HttpHeaders> headersConsumer) {
headersConsumer.accept(initHeaders());
return this;
}
private HttpHeaders initHeaders() {
if (this.defaultHeaders == null) {
this.defaultHeaders = new HttpHeaders();
}
return this.defaultHeaders;
}
@Override
public WebTestClient.Builder defaultCookie(String cookie, String... values) {
initCookies().addAll(cookie, Arrays.asList(values));
return this;
}
@Override
public WebTestClient.Builder defaultCookies(Consumer<MultiValueMap<String, String>> cookiesConsumer) {
cookiesConsumer.accept(initCookies());
return this;
}
private MultiValueMap<String, String> initCookies() {
if (this.defaultCookies == null) {
this.defaultCookies = new LinkedMultiValueMap<>(3);
}
return this.defaultCookies;
}
@Override
public WebTestClient.Builder filter(ExchangeFilterFunction filter) {
Assert.notNull(filter, "ExchangeFilterFunction is required");
initFilters().add(filter);
return this;
}
@Override
public WebTestClient.Builder filters(Consumer<List<ExchangeFilterFunction>> filtersConsumer) {
filtersConsumer.accept(initFilters());
return this;
}
private List<ExchangeFilterFunction> initFilters() {
if (this.filters == null) {
this.filters = new ArrayList<>();
}
return this.filters;
}
@Override
public WebTestClient.Builder entityExchangeResultConsumer(Consumer<EntityExchangeResult<?>> entityResultConsumer) {
Assert.notNull(entityResultConsumer, "'entityResultConsumer' is required");
this.entityResultConsumer = this.entityResultConsumer.andThen(entityResultConsumer);
return this;
}
@Override
public WebTestClient.Builder codecs(Consumer<ClientCodecConfigurer> configurer) {
if (this.strategiesConfigurers == null) {
this.strategiesConfigurers = new ArrayList<>(4);
}
this.strategiesConfigurers.add(builder -> builder.codecs(configurer));
return this;
}
@Override
public WebTestClient.Builder exchangeStrategies(ExchangeStrategies strategies) {
this.strategies = strategies;
return this;
}
@Override
@SuppressWarnings("deprecation")
public WebTestClient.Builder exchangeStrategies(Consumer<ExchangeStrategies.Builder> configurer) {
if (this.strategiesConfigurers == null) {
this.strategiesConfigurers = new ArrayList<>(4);
}
this.strategiesConfigurers.add(configurer);
return this;
}
@Override
public WebTestClient.Builder apply(WebTestClientConfigurer configurer) {
configurer.afterConfigurerAdded(this, this.httpHandlerBuilder, this.connector);
return this;
}
@Override
public WebTestClient.Builder responseTimeout(Duration timeout) {
this.responseTimeout = timeout;
return this;
}
@Override
public WebTestClient build() {
ClientHttpConnector connectorToUse = this.connector;
if (connectorToUse == null) {
if (this.httpHandlerBuilder != null) {
connectorToUse = new HttpHandlerConnector(this.httpHandlerBuilder.build());
}
}
if (connectorToUse == null) {
connectorToUse = initConnector();
}
Function<ClientHttpConnector, ExchangeFunction> exchangeFactory = connector -> {
ExchangeFunction exchange = ExchangeFunctions.create(connector, initExchangeStrategies());
if (CollectionUtils.isEmpty(this.filters)) {
return exchange;
}
return this.filters.stream()
.reduce(ExchangeFilterFunction::andThen)
.map(filter -> filter.apply(exchange))
.orElse(exchange);
};
return new DefaultWebTestClient(connectorToUse, exchangeFactory, initUriBuilderFactory(),
this.defaultHeaders != null ? HttpHeaders.readOnlyHttpHeaders(this.defaultHeaders) : null,
this.defaultCookies != null ? CollectionUtils.unmodifiableMultiValueMap(this.defaultCookies) : null,
this.entityResultConsumer, this.responseTimeout, new DefaultWebTestClientBuilder(this));
}
private static ClientHttpConnector initConnector() {
if (reactorNettyClientPresent) {
return new ReactorClientHttpConnector();
}
else if (reactorNetty2ClientPresent) {
return new ReactorNetty2ClientHttpConnector();
}
else if (jettyClientPresent) {
return new JettyClientHttpConnector();
}
else if (httpComponentsClientPresent) {
return new HttpComponentsClientHttpConnector();
}
else {
return new JdkClientHttpConnector();
}
}
private ExchangeStrategies initExchangeStrategies() {
if (CollectionUtils.isEmpty(this.strategiesConfigurers)) {
return (this.strategies != null ? this.strategies : ExchangeStrategies.withDefaults());
}
ExchangeStrategies.Builder builder =
(this.strategies != null ? this.strategies.mutate() : ExchangeStrategies.builder());
this.strategiesConfigurers.forEach(configurer -> configurer.accept(builder));
return builder.build();
}
private UriBuilderFactory initUriBuilderFactory() {
if (this.uriBuilderFactory != null) {
return this.uriBuilderFactory;
}
return (this.baseUrl != null ?
new DefaultUriBuilderFactory(this.baseUrl) : new DefaultUriBuilderFactory());
}
}