org.apache.flink.runtime.healthmanager.plugins.ActionSelector Maven / Gradle / Ivy
/*
* 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.flink.runtime.healthmanager.plugins;
import org.apache.flink.runtime.healthmanager.HealthMonitor;
import java.util.List;
/**
* Action selector is responsible for action selecting and action history maintain.
*/
public interface ActionSelector {
/**
* Open an action selector.
* @param monitor the health monitor which owns the selector.
*/
void open(HealthMonitor monitor);
/**
* Close an action selector.
*/
void close();
/**
* Select an action to execute from the candidates, return null if no candidate selected.
*
* @param action
* @return
*/
Action accept(List action);
/**
* Notify an action failure.
* @param action
*/
void actionFailed(Action action);
/**
* Notify an action succeed.
* @param action
*/
void actionSucceed(Action action);
}