/*
* Copyright 2013-2015 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.cloud.netflix.feign.ribbon;
import org.apache.http.client.HttpClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.AutoConfigureBefore;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.cloud.client.loadbalancer.LoadBalancedRetryPolicyFactory;
import org.springframework.cloud.netflix.feign.FeignAutoConfiguration;
import org.springframework.cloud.netflix.ribbon.SpringClientFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import com.netflix.loadbalancer.ILoadBalancer;
import feign.Client;
import feign.Feign;
import feign.Request;
import feign.httpclient.ApacheHttpClient;
import feign.okhttp.OkHttpClient;
/**
* Autoconfiguration to be activated if Feign is in use and needs to be use Ribbon as a
* load balancer.
*
* @author Dave Syer
*/
@ConditionalOnClass({ ILoadBalancer.class, Feign.class })
@Configuration
@AutoConfigureBefore(FeignAutoConfiguration.class)
public class FeignRibbonClientAutoConfiguration {
@Bean
@Primary
@ConditionalOnMissingClass("org.springframework.retry.support.RetryTemplate")
public CachingSpringLoadBalancerFactory cachingLBClientFactory(
SpringClientFactory factory) {
return new CachingSpringLoadBalancerFactory(factory);
}
@Bean
@Primary
@ConditionalOnClass(name = "org.springframework.retry.support.RetryTemplate")
public CachingSpringLoadBalancerFactory retryabeCachingLBClientFactory(
SpringClientFactory factory, LoadBalancedRetryPolicyFactory retryPolicyFactory) {
return new CachingSpringLoadBalancerFactory(factory, retryPolicyFactory, true);
}
@Bean
@ConditionalOnMissingBean
public Client feignClient(CachingSpringLoadBalancerFactory cachingFactory,
SpringClientFactory clientFactory) {
return new LoadBalancerFeignClient(new Client.Default(null, null),
cachingFactory, clientFactory);
}
@Bean
@ConditionalOnMissingBean
public Request.Options feignRequestOptions() {
return LoadBalancerFeignClient.DEFAULT_OPTIONS;
}
@Configuration
@ConditionalOnClass(ApacheHttpClient.class)
@ConditionalOnProperty(value = "feign.httpclient.enabled", matchIfMissing = true)
protected static class HttpClientFeignLoadBalancedConfiguration {
@Autowired(required = false)
private HttpClient httpClient;
@Bean
@ConditionalOnMissingBean(Client.class)
public Client feignClient(CachingSpringLoadBalancerFactory cachingFactory,
SpringClientFactory clientFactory) {
ApacheHttpClient delegate;
if (this.httpClient != null) {
delegate = new ApacheHttpClient(this.httpClient);
}
else {
delegate = new ApacheHttpClient();
}
return new LoadBalancerFeignClient(delegate, cachingFactory, clientFactory);
}
}
@Configuration
@ConditionalOnClass(OkHttpClient.class)
@ConditionalOnProperty(value = "feign.okhttp.enabled", matchIfMissing = true)
protected static class OkHttpFeignLoadBalancedConfiguration {
@Autowired(required = false)
private okhttp3.OkHttpClient okHttpClient;
@Bean
@ConditionalOnMissingBean(Client.class)
public Client feignClient(CachingSpringLoadBalancerFactory cachingFactory,
SpringClientFactory clientFactory) {
OkHttpClient delegate;
if (this.okHttpClient != null) {
delegate = new OkHttpClient(this.okHttpClient);
}
else {
delegate = new OkHttpClient();
}
return new LoadBalancerFeignClient(delegate, cachingFactory, clientFactory);
}
}
}