org.apache.servicecomb.bizkeeper.HystrixPropertiesStrategyExt Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.servicecomb.bizkeeper;
import java.util.Map;
import org.apache.servicecomb.foundation.common.concurrent.ConcurrentHashMapEx;
import com.netflix.hystrix.HystrixCommandKey;
import com.netflix.hystrix.HystrixCommandProperties;
import com.netflix.hystrix.HystrixCommandProperties.Setter;
import com.netflix.hystrix.strategy.properties.HystrixPropertiesStrategy;
/**
* 定制HystrixPropertiesStrategy。 配置需要支持动态生效和调整， 默认的hystrix实现会根据CommonKey进行缓存。
* CircuitBreake需要统计并记录请求数据，需要缓存并保证每个commandKey对应一个Breaker；单纯清理CommandKey无法动态生效。
* 参考：HystrixCircuitBreaker.Factory.getInstance(commandKey, groupKey,
* properties, metrics)
*
*/
public final class HystrixPropertiesStrategyExt extends HystrixPropertiesStrategy {
private static final HystrixPropertiesStrategyExt INSTANCE = new HystrixPropertiesStrategyExt();
private final Map commandPropertiesMap = new ConcurrentHashMapEx<>();
private HystrixPropertiesStrategyExt() {
}
public static HystrixPropertiesStrategyExt getInstance() {
return INSTANCE;
}
@Override
public HystrixCommandProperties getCommandProperties(HystrixCommandKey commandKey, Setter builder) {
return commandPropertiesMap.computeIfAbsent(commandKey.name(),
key -> new HystrixCommandPropertiesExt(commandKey, builder));
}
}