Package com.alibaba.wasp.master

Source Code of com.alibaba.wasp.master.MetricsMasterWrapperImpl

/**
* Copyright The Apache Software Foundation
*
* 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.master;

import com.alibaba.wasp.ClusterId;
import com.alibaba.wasp.ServerName;
import com.alibaba.wasp.master.metrics.MetricsMasterWrapper;
import com.alibaba.wasp.zookeeper.ZooKeeperWatcher;

/**
* Impl for exposing FMaster Information through JMX
*/
public class MetricsMasterWrapperImpl implements MetricsMasterWrapper {

  private final FMaster master;

  public MetricsMasterWrapperImpl(final FMaster master) {
    this.master = master;
  }

  @Override
  public double getAverageLoad() {
    return master.getAverageLoad();
  }

  @Override
  public String getClusterId() {
    ClusterId clusterId = master.getClusterId();
    if (clusterId == null) {
      return "";
    }
    return clusterId.toString();
  }

  @Override
  public String getZookeeperQuorum() {
    ZooKeeperWatcher zk = master.getZooKeeperWatcher();
    if (zk == null) {
      return "";
    }
    return zk.getQuorum();
  }

  @Override
  public long getStartTime() {
    return master.getMasterStartTime();
  }

  @Override
  public long getActiveTime() {
    return master.getMasterActiveTime();
  }

  @Override
  public int getFServers() {
    FServerManager serverManager = this.master.getFServerManager();
    if (serverManager == null) {
      return 0;
    }
    return serverManager.getOnlineServers().size();
  }

  @Override
  public int getDeadFServers() {
    FServerManager serverManager = this.master.getFServerManager();
    if (serverManager == null) {
      return 0;
    }
    return serverManager.getDeadServers().size();
  }

  @Override
  public String getServerName() {
    ServerName serverName = master.getServerName();
    if (serverName == null) {
      return "";
    }
    return serverName.getServerName();
  }

  @Override
  public boolean getIsActiveMaster() {
    return master.isActiveMaster();
  }
}
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