/*
* 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.solr.common.cloud;
import org.apache.zookeeper.KeeperException;
/**
* A callback object which can be used for implementing retry-able operations.
*/
public abstract class ZkOperation {
/**
* Performs the operation - which may be involved multiple times if the connection
* to ZooKeeper closes during this operation
*
* @return the result of the operation or null
*/
public abstract Object execute() throws KeeperException, InterruptedException;
}