content: /**
   * 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 com.alibaba.wasp.fserver;
  
  /**
   * Impl for exposing fServer Information through JMX
   */
  public class MXBeanImpl implements MXBean {
  
    private final FServer fServer;
  
    private static MXBeanImpl instance = null;
  
    public synchronized static MXBeanImpl init(final FServer rs) {
      if (instance == null) {
        instance = new MXBeanImpl(rs);
      }
      return instance;
    }
  
    protected MXBeanImpl(final FServer fs) {
      this.fServer = fs;
    }
  
    @Override
    public String getZookeeperQuorum() {
      return fServer.getZooKeeper().getQuorum();
    }
  
    @Override
    public String getServerName() {
      return fServer.getServerName().getServerName();
    }
  }
  