org.springframework.boot.autoconfigure.web.client.RestTemplateAutoConfiguration Maven / Gradle / Ivy
/*
* Copyright 2012-2020 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.boot.autoconfigure.web.client;
import java.util.Collection;
import java.util.List;
import java.util.function.BiFunction;
import java.util.stream.Collectors;
import org.springframework.beans.factory.ObjectProvider;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication.Type;
import org.springframework.boot.autoconfigure.condition.NoneNestedConditions;
import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
import org.springframework.boot.autoconfigure.http.HttpMessageConvertersAutoConfiguration;
import org.springframework.boot.autoconfigure.web.client.RestTemplateAutoConfiguration.NotReactiveWebApplicationCondition;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.boot.web.client.RestTemplateCustomizer;
import org.springframework.boot.web.client.RestTemplateRequestCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Conditional;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Lazy;
import org.springframework.web.client.RestTemplate;
/**
* {@link EnableAutoConfiguration Auto-configuration} for {@link RestTemplate}.
*
* @author Stephane Nicoll
* @author Phillip Webb
* @since 1.4.0
*/
@Configuration(proxyBeanMethods = false)
@AutoConfigureAfter(HttpMessageConvertersAutoConfiguration.class)
@ConditionalOnClass(RestTemplate.class)
@Conditional(NotReactiveWebApplicationCondition.class)
public class RestTemplateAutoConfiguration {
@Bean
@Lazy
@ConditionalOnMissingBean
public RestTemplateBuilder restTemplateBuilder(ObjectProvider messageConverters,
ObjectProvider restTemplateCustomizers,
ObjectProvider> restTemplateRequestCustomizers) {
RestTemplateBuilder builder = new RestTemplateBuilder();
HttpMessageConverters converters = messageConverters.getIfUnique();
if (converters != null) {
builder = builder.messageConverters(converters.getConverters());
}
builder = addCustomizers(builder, restTemplateCustomizers, RestTemplateBuilder::customizers);
builder = addCustomizers(builder, restTemplateRequestCustomizers, RestTemplateBuilder::requestCustomizers);
return builder;
}
private RestTemplateBuilder addCustomizers(RestTemplateBuilder builder, ObjectProvider objectProvider,
BiFunction, RestTemplateBuilder> method) {
List customizers = objectProvider.orderedStream().collect(Collectors.toList());
if (!customizers.isEmpty()) {
return method.apply(builder, customizers);
}
return builder;
}
static class NotReactiveWebApplicationCondition extends NoneNestedConditions {
NotReactiveWebApplicationCondition() {
super(ConfigurationPhase.PARSE_CONFIGURATION);
}
@ConditionalOnWebApplication(type = Type.REACTIVE)
private static class ReactiveWebApplication {
}
}
}