/*******************************************************************************
* Copyright 2011 Netflix
*
* 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.netflix.astyanax.connectionpool;
/**
* Interface for algorithm to detect when a host is considered down. Once a host
* is considered to be down it will be added to the retry service
*
* @author elandau
*
*/
public interface BadHostDetector {
public interface Instance {
/**
* Add a timeout sample and return false if the host should be
* quarantined
*
* @return true to quarantine or false to continue using this host
*/
boolean addTimeoutSample();
}
Instance createInstance();
void removeInstance(Instance instance);
}