package org.apache.helix.controller.pipeline;
   
   /*
    * 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.
   */
  
  import java.util.Map;
  
  import org.apache.helix.controller.stages.ClusterEvent;
  import org.apache.helix.monitoring.mbeans.HelixStageLatencyMonitor;
  
  
  public class AbstractBaseStage implements Stage
  {
    @Override
    public void init(StageContext context)
    {
  
    }
  
    @Override
    public void preProcess()
    {
      // TODO Auto-generated method stub
  
    }
  
    @Override
    public void process(ClusterEvent event) throws Exception
    {
  
    }
  
    @Override
    public void postProcess()
    {
  
    }
  
    @Override
    public void release()
    {
  
    }
  
    @Override
    public String getStageName()
    {
      // default stage name will be the class name
      String className = this.getClass().getName();
      return className;
    }
  
    public void addLatencyToMonitor(ClusterEvent event, long latency)
    {
      Map<String, HelixStageLatencyMonitor> stgLatencyMonitorMap =
          event.getAttribute("HelixStageLatencyMonitorMap");
      if (stgLatencyMonitorMap != null)
      {
        if (stgLatencyMonitorMap.containsKey(getStageName()))
        {
          HelixStageLatencyMonitor stgLatencyMonitor =
              stgLatencyMonitorMap.get(getStageName());
          stgLatencyMonitor.addStgLatency(latency);
        }
      }
    }
  }