kafka.common.KafkaZookeperClient.scala Maven / Gradle / Ivy

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/**
 * 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 kafka.common

import org.I0Itec.zkclient.ZkClient
import kafka.utils.{ZKStringSerializer, ZKConfig}
import java.util.concurrent.atomic.AtomicReference

object KafkaZookeeperClient {
  private val INSTANCE = new AtomicReference[ZkClient](null)

  def getZookeeperClient(config: ZKConfig): ZkClient = {
    // TODO: This cannot be a singleton since unit tests break if we do that
//    INSTANCE.compareAndSet(null, new ZkClient(config.zkConnect, config.zkSessionTimeoutMs, config.zkConnectionTimeoutMs,
//                                              ZKStringSerializer))
    INSTANCE.set(new ZkClient(config.zkConnect, config.zkSessionTimeoutMs, config.zkConnectionTimeoutMs,
                                              ZKStringSerializer))
    INSTANCE.get()
  }
}