org.cattleframework.cloud.discovery.loadbalancer.CloudLoadBalancerClientConfiguration Maven / Gradle / Ivy

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Cattle framework cloud discovery common component pom
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/*
 * Copyright (C) 2018 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.cattleframework.cloud.discovery.loadbalancer;

import java.util.List;

import org.cattleframework.cloud.discovery.LoadBalancerProperties;
import org.cattleframework.cloud.discovery.event.LoadBalancerEvent;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.cloud.client.ConditionalOnBlockingDiscoveryEnabled;
import org.springframework.cloud.client.ConditionalOnDiscoveryEnabled;
import org.springframework.cloud.client.ConditionalOnReactiveDiscoveryEnabled;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.cloud.client.discovery.ReactiveDiscoveryClient;
import org.springframework.cloud.loadbalancer.core.ReactorLoadBalancer;
import org.springframework.cloud.loadbalancer.core.ServiceInstanceListSupplier;
import org.springframework.cloud.loadbalancer.core.ServiceInstanceListSupplierBuilder;
import org.springframework.cloud.loadbalancer.support.LoadBalancerClientFactory;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;
import org.springframework.core.env.Environment;

/**
 * 平台负载均衡器客户端配置
 * 
 * @author orange
 *
 */
@Configuration(proxyBeanMethods = false)
@ConditionalOnDiscoveryEnabled
public class CloudLoadBalancerClientConfiguration {

    private static final int REACTIVE_SERVICE_INSTANCE_SUPPLIER_ORDER = 183827460;

    @Bean
    @ConditionalOnMissingBean
    @ConditionalOnProperty(value = "cattle.cloud.loadbalancer.strategy", havingValue = "roundRobin", matchIfMissing = true)
    public ReactorLoadBalancer roundRobinLoadBalancer(Environment environment,
	    LoadBalancerClientFactory loadBalancerClientFactory,
	    @Autowired(required = false) List loadBalancerEvents) {
	String name = environment.getProperty(LoadBalancerClientFactory.PROPERTY_NAME);
	return new RoundRobinCloudLoadBalancer(
		loadBalancerClientFactory.getLazyProvider(name, ServiceInstanceListSupplier.class), name,
		loadBalancerEvents);
    }

    @Bean
    @ConditionalOnMissingBean
    @ConditionalOnProperty(value = "cattle.cloud.loadbalancer.strategy", havingValue = "random")
    public ReactorLoadBalancer randomLoadBalancer(Environment environment,
	    LoadBalancerClientFactory loadBalancerClientFactory,
	    @Autowired(required = false) List loadBalancerEvents) {
	String name = environment.getProperty(LoadBalancerClientFactory.PROPERTY_NAME);
	return new RandomCloudLoadBalancer(
		loadBalancerClientFactory.getLazyProvider(name, ServiceInstanceListSupplier.class), name,
		loadBalancerEvents);
    }

    @Configuration(proxyBeanMethods = false)
    @ConditionalOnReactiveDiscoveryEnabled
    @Order(REACTIVE_SERVICE_INSTANCE_SUPPLIER_ORDER)
    public static class ReactiveSupportConfiguration {

	@Bean
	@ConditionalOnBean(ReactiveDiscoveryClient.class)
	@ConditionalOnMissingBean
	@ConditionalOnProperty(value = "spring.cloud.loadbalancer.configurations", havingValue = "default", matchIfMissing = true)
	public ServiceInstanceListSupplier serviceInstanceListSupplier(ConfigurableApplicationContext context,
		LoadBalancerProperties loadBalancerProperties) {
	    ServiceInstanceListSupplierBuilder serviceInstanceListSupplierBuilder = ServiceInstanceListSupplier
		    .builder().withDiscoveryClient();
	    if (loadBalancerProperties.isCache()) {
		serviceInstanceListSupplierBuilder = serviceInstanceListSupplierBuilder.withCaching();
	    }
	    return serviceInstanceListSupplierBuilder.build(context);
	}
    }

    @Configuration(proxyBeanMethods = false)
    @ConditionalOnBlockingDiscoveryEnabled
    @Order(REACTIVE_SERVICE_INSTANCE_SUPPLIER_ORDER + 1)
    public static class BlockingSupportConfiguration {

	@Bean
	@ConditionalOnBean(DiscoveryClient.class)
	@ConditionalOnMissingBean
	@ConditionalOnProperty(value = "spring.cloud.loadbalancer.configurations", havingValue = "default", matchIfMissing = true)
	public ServiceInstanceListSupplier serviceInstanceListSupplier(ConfigurableApplicationContext context,
		LoadBalancerProperties loadBalancerProperties) {
	    ServiceInstanceListSupplierBuilder serviceInstanceListSupplierBuilder = ServiceInstanceListSupplier
		    .builder().withBlockingDiscoveryClient();
	    if (loadBalancerProperties.isCache()) {
		serviceInstanceListSupplierBuilder = serviceInstanceListSupplierBuilder.withCaching();
	    }
	    return serviceInstanceListSupplierBuilder.build(context);
	}
    }
}