org.opennms.netmgt.rtc.datablock
Class RTCNodeSvcTimesList

java.lang.Object
  java.util.AbstractCollection
      java.util.AbstractList
          java.util.AbstractSequentialList
              java.util.LinkedList
                  org.opennms.netmgt.rtc.datablock.RTCNodeSvcTimesList

All Implemented Interfaces:

java.lang.Cloneable, java.util.Collection, java.util.List, java.io.Serializable

public class RTCNodeSvcTimesList

extends java.util.LinkedList

List of service times. This contains a list of service lost/regained set/pair for the RTCNode. Also maintains the outage/down time each time it is calculated and the time from which this was calculated - this is done so when the outage time for a window is calculated, the same calculations are not done on the node multiple times. 'Expired' outages are removed during 'add' and 'getDownTime' operations.

Author:

Sowmya Kumaraswamy, OpenNMS.org

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class java.util.LinkedList

Nested classes inherited from class java.util.AbstractList

Field Summary

private long	m_outTime The outage time computed since 'm_outTimeSince'
private long	m_outTimeSince The time from which the current outtime 'm_outTime' is calculated

Fields inherited from class java.util.LinkedList

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

RTCNodeSvcTimesList()
Default constructor.

Method Summary

void	addSvcTime(long losttime) Add a new servicetime entry
void	addSvcTime(long losttime, long regainedtime) Add a new servicetime entry.
long	getDownTime(long curTime, long rollingWindow) Calculate the total downtime in this list of service times for the last 'rollingWindow' time starting at 'curTime'
private void	removeExpiredOutages() Remove expired outages.
private void	removeExpiredOutages(long curTime, long rollingWindow) Remove expired outages.

Methods inherited from class java.util.LinkedList

add, add, addAll, addAll, addFirst, addLast, clear, clone, contains, get, getFirst, getLast, indexOf, lastIndexOf, listIterator, remove, remove, removeFirst, removeLast, set, size, toArray, toArray

Methods inherited from class java.util.AbstractSequentialList

iterator

Methods inherited from class java.util.AbstractList

equals, hashCode, listIterator, removeRange, subList

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty, removeAll, retainAll, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.List

containsAll, equals, hashCode, isEmpty, iterator, listIterator, removeAll, retainAll, subList

Field Detail

m_outTimeSince

private long m_outTimeSince

The time from which the current outtime 'm_outTime' is calculated

m_outTime

private long m_outTime

The outage time computed since 'm_outTimeSince'

Constructor Detail

RTCNodeSvcTimesList

public RTCNodeSvcTimesList()

Default constructor.

Method Detail

removeExpiredOutages

private void removeExpiredOutages()

Remove expired outages. Remove all closed outages that are not in the the last 'rollingWindow'

removeExpiredOutages

private void removeExpiredOutages(long curTime,
                                  long rollingWindow)

Remove expired outages. Remove closed outages that are not in the the last 'rollingWindow' starting from curTime.

Parameters:

curTime - the current time to start from.

rollingWindow - the rolling window to use.

addSvcTime

public void addSvcTime(long losttime,
                       long regainedtime)

Add a new servicetime entry.

Parameters:

losttime - time at which service was lost

regainedtime - time at which service was regained

addSvcTime

public void addSvcTime(long losttime)

Add a new servicetime entry

Parameters:

losttime - time at which service was lost

getDownTime

public long getDownTime(long curTime,
                        long rollingWindow)

Calculate the total downtime in this list of service times for the last 'rollingWindow' time starting at 'curTime'

Parameters:

curTime - the current time from which the down time is to be calculated

rollingWindow - the last window for which the downtime is to be calculated

Returns:

total down time in service times in this list