com.github.enadim.spring.cloud.ribbon.support.StrictMetadataMatcherConfig Maven / Gradle / Ivy
/*
* Copyright (c) 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 com.github.enadim.spring.cloud.ribbon.support;
import com.github.enadim.spring.cloud.ribbon.predicate.StrictMetadataMatcher;
import com.github.enadim.spring.cloud.ribbon.rule.PredicateBasedRuleSupport;
import com.netflix.client.config.IClientConfig;
import com.netflix.niws.loadbalancer.DiscoveryEnabledNIWSServerList;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.autoconfigure.AutoConfigureBefore;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.cloud.netflix.ribbon.RibbonClientConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import static com.github.enadim.spring.cloud.ribbon.rule.RuleDescription.from;
import static com.github.enadim.spring.cloud.ribbon.support.RibbonExtensionsConstants.STRICT_METADATA_MATCHER_RULE_CLIENT_ENABLED_EXPRESSION;
import static com.github.enadim.spring.cloud.ribbon.support.RibbonExtensionsConstants.STRICT_METADATA_MATCHER_RULE_ENABLED;
/**
* The strict metadata matcher load balancing rule definition.
* Should not be imported directly for further compatibility reason: please use {@link EnableRibbonStrictMetadataMatcher}.
*
* @author Nadim Benabdenbi
* @see StrictMetadataMatcher
*/
@Configuration
@ConditionalOnClass(DiscoveryEnabledNIWSServerList.class)
@AutoConfigureBefore(RibbonClientConfiguration.class)
@ConditionalOnProperty(value = STRICT_METADATA_MATCHER_RULE_ENABLED, matchIfMissing = true)
@ConditionalOnExpression(value = STRICT_METADATA_MATCHER_RULE_CLIENT_ENABLED_EXPRESSION)
@Slf4j
public class StrictMetadataMatcherConfig extends RuleBaseConfig {
/**
* @param clientConfig the client config
* @param rule the predicate rule support
* @return an instance of {@link StrictMetadataMatcher}
*/
@Bean
public StrictMetadataMatcher strictMetadataMatcher(IClientConfig clientConfig, PredicateBasedRuleSupport rule) {
StrictMetadataMatcher strictMetadataMatcher = new StrictMetadataMatcher();
rule.setPredicate(strictMetadataMatcher);
rule.setDescription(from(strictMetadataMatcher));
log.info("Strict metadata matcher enabled for client [{}].", clientConfig.getClientName());
return strictMetadataMatcher;
}
}