com.tencent.polaris.api.plugin.weight.WeightAdjuster Maven / Gradle / Ivy
/*
* Tencent is pleased to support the open source community by making Polaris available.
*
* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
*
* Licensed under the BSD 3-Clause License (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://opensource.org/licenses/BSD-3-Clause
*
* 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.tencent.polaris.api.plugin.weight;
import com.tencent.polaris.api.plugin.Plugin;
import com.tencent.polaris.api.pojo.InstanceGauge;
import com.tencent.polaris.api.pojo.InstanceWeight;
import com.tencent.polaris.api.pojo.ServiceInstances;
import java.util.List;
/**
* 【扩展点接口】动态权重调整接口
*
* @author andrewshan
* @date 2019/8/21
*/
public interface WeightAdjuster extends Plugin {
/**
* Update dynamic weight.
*
* @param instances service's instances
* @return new dynamic weight for instances
*/
List timingAdjustDynamicWeight(ServiceInstances instances);
/**
* 实时上报健康状态，并判断是否需要立刻进行动态权重调整，用于流量削峰.
*
* @param metric 实例调用信息
* @return 是否需要立刻调整动态权重
*/
boolean realTimeAdjustDynamicWeight(InstanceGauge metric);
}