/*
    * 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.shardingsphere.mode.repository.cluster.lock.holder;
  
  import org.apache.shardingsphere.infra.props.TypedProperties;
  import org.apache.shardingsphere.infra.spi.type.typed.TypedSPILoader;
  import org.apache.shardingsphere.mode.repository.cluster.lock.DistributedLock;
  import org.apache.shardingsphere.mode.repository.cluster.lock.creator.DistributedLockCreator;
  
  import java.util.Map;
  import java.util.concurrent.ConcurrentHashMap;
  
  /**
   * Distributed lock holder.
   */
  public final class DistributedLockHolder {
      
      private final DistributedLockCreator<Object, TypedProperties<?>> creator;
      
      private final Object client;
      
      private final TypedProperties<?> props;
      
      private final Map<String, DistributedLock> locks = new ConcurrentHashMap<>();
      
      @SuppressWarnings("unchecked")
      public DistributedLockHolder(final String type, final Object client, final TypedProperties<?> props) {
          creator = TypedSPILoader.getService(DistributedLockCreator.class, type);
          this.client = client;
          this.props = props;
      }
      
      /**
       * Get distributed lock.
       * 
       * @param lockKey lock key
       * @return distributed lock
       */
      public DistributedLock getDistributedLock(final String lockKey) {
          return locks.computeIfAbsent(lockKey, key -> creator.create(key, client, props));
      }
  }