package org.apache.helix.userdefinedrebalancer;

/*
 * 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.
 */

import org.apache.helix.api.StateTransitionHandlerFactory;
import org.apache.helix.api.id.PartitionId;
import org.apache.helix.api.id.ResourceId;

/**
 * This factory allows a participant to get the appropriate state model callbacks for the lock
 * manager state model. This is used exactly once per participant to get a valid instance of a Lock,
 * and then the same Lock instance is used for all state transition callbacks.
 */
public class LockFactory extends StateTransitionHandlerFactory<Lock> {
  @Override
  public Lock createStateTransitionHandler(ResourceId resource, PartitionId partitionId) {
    // TODO Auto-generated method stub
    return new Lock(partitionId.stringify());
  }
}