TimeRecord class

TimeRecord.java

@SpaceClass
public class TimeRecord implements Serializable{
  private static Logger log=Logger.
      getLogger(TimeRecord.class.getName());
  private String location=null;
  private List<TimeEntry> timelog=null;
  private final int logsize=10;   //arbitrary

  //Only to be used for constructing templates
  public TimeRecord(){}
    
  public TimeRecord(String loc){
    this.location=loc;
    this.setTimelog(new LinkedList<TimeEntry>());
  }
    
  // Always want these in same partition
  @SpaceRouting
  public int getRoutingId(){
    return 1;
  }
    
  public void setRoutingId(int id){}
    
  public Long getTime() {
    if(getTimelog()==null)
      setTimelog(new LinkedList<TimeEntry>());
    if(getTimelog().size()==0)return null;
    return getTimelog().get(0).getTime();
  }
  public void setTime(TimeStamp ts) {
    if(getTimelog()==null)
       setTimelog(new LinkedList<TimeEntry>());
    if(getTimelog().size()>=logsize){
      getTimelog().remove(9);
    }
    getTimelog().add(0,new TimeEntry(ts));
  }
    
  /**
   * Computes average latency from the timelog.  
   * @return
   */
  public double getAveLatency(){
    if(getTimelog()==null)
       setTimelog(new LinkedList<TimeEntry>());
    if(getTimelog().size()==0)return 0;
        
    long totaltime=0;
    for(TimeEntry e:getTimelog()){
      totaltime+=e.getLatency();
    }
    return (double)(totaltime/((getTimelog().size())));
  }
    
    // Singleton per location
    @SpaceId
    public String getLocation() {
        return location;
    }

        /* 

        Uninteresting boilerplate getters and setters and such

                   .....

        */
}

class TimeEntry implements Serializable{
    private long time;
    private long latency;
    
    public TimeEntry(TimeStamp ts){
        time=ts.getTime();
        latency=System.currentTimeMillis()-ts.getTime();
    }
    
    public TimeEntry(long time, long latency) {
        this.time = time;
        this.latency = latency;
    }

       /*  Getters and setters
            ....
       */


}