/*
 * ============LICENSE_START==========================================
 * org.onap.music
 * ===================================================================
 *  Copyright (c) 2017 AT&T Intellectual Property
 * ===================================================================
 *  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.
 * 
 * ============LICENSE_END=============================================
 * ====================================================================
 */
package org.onap.music.lockingservice;

import org.apache.zookeeper.KeeperException;

/**
 * A callback object which can be used for implementing retry-able operations in the 
 * {@link org.onap.music.lockingservice.ProtocolSupport} class
 *
 */
public interface ZooKeeperOperation {
    
    /**
     * 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
     * @throws KeeperException FILL IN
     * @throws InterruptedException FILL IN
     */
    public boolean execute() throws KeeperException, InterruptedException;
}