/**
 * 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.hadoop.hdfs.server.namenode.bookkeeper.zk;

import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.KeeperException;
import org.apache.zookeeper.Watcher;
import org.apache.zookeeper.ZooKeeper;
import org.apache.zookeeper.data.ACL;
import org.apache.zookeeper.data.Stat;

import java.util.List;

/**
 * Adapter from {@link ZooKeeper} to {@link ZooKeeperIface}. Ported from
 * jcommon-zookeeper. See
 * https://github.com/facebook/jcommon/blob/master/zookeeper/src/main/java/com/facebook/zookeeper/BasicZooKeeper.java
 */
public class BasicZooKeeper implements ZooKeeperIface {
  private final ZooKeeper zk;

  public BasicZooKeeper(ZooKeeper zk) {
    this.zk = zk;
  }

  @Override
  public long getSessionId() {
    return zk.getSessionId();
  }

  @Override
  public void close() throws InterruptedException {
    zk.close();
  }

  @Override
  public String create(String path, byte[] data, List<ACL> acl, CreateMode createMode)
      throws KeeperException, InterruptedException {
    return zk.create(path, data, acl, createMode);
  }

  @Override
  public void delete(String path, int version)
      throws InterruptedException, KeeperException {
    zk.delete(path, version);
  }

  @Override
  public Stat exists(String path, Watcher watcher)
      throws KeeperException, InterruptedException {
    return zk.exists(path, watcher);
  }

  @Override
  public Stat exists(String path, boolean watch)
      throws KeeperException, InterruptedException {
    return zk.exists(path, watch);
  }

  @Override
  public byte[] getData(String path, Watcher watcher, Stat stat)
      throws KeeperException, InterruptedException {
    return zk.getData(path, watcher, stat);
  }

  @Override
  public byte[] getData(String path, boolean watch, Stat stat)
      throws KeeperException, InterruptedException {
    return zk.getData(path, watch, stat);
  }

  @Override
  public Stat setData(String path, byte[] data, int version)
      throws KeeperException, InterruptedException {
    return zk.setData(path, data, version);
  }

  @Override
  public List<String> getChildren(String path, Watcher watcher)
      throws KeeperException, InterruptedException {
    return zk.getChildren(path, watcher);
  }

  @Override
  public List<String> getChildren(String path, boolean watch)
      throws KeeperException, InterruptedException {
    return zk.getChildren(path, watch);
  }

  @Override
  public ZooKeeper.States getState() {
    return zk.getState();
  }
}