net.floodlightcontroller.counter
Class SimpleCounter

java.lang.Object
  net.floodlightcontroller.counter.SimpleCounter

All Implemented Interfaces:

ICounter

public class SimpleCounter
extends java.lang.Object
implements ICounter

This is a simple counter implementation that doesn't support data series. The idea is that floodlight only keeps the realtime value for each counter, statd, a statistics collection daemon, samples counters at a user-defined interval and pushes the values to a database, which keeps time-based data series.

Author:

Kanzhe

Nested Class Summary

Nested classes/interfaces inherited from interface net.floodlightcontroller.counter.ICounter

ICounter.DateSpan

Field Summary

protected CounterValue	counter
protected java.util.Date	samplingTime
protected java.util.Date	startDate

Constructor Summary

protected

SimpleCounter(java.util.Date startDate, CounterValue.CounterType type) Protected constructor - use createCounter factory method instead

Method Summary

static ICounter	createCounter(java.util.Date startDate, CounterValue.CounterType type) Factory method to create a new counter instance.
static ICounter	createCounter(ICounter copy) Factory method to create a copy of a counter instance.
java.util.Date	getCounterDate() This is the method to retrieve the last sampling time.
CounterValue	getCounterValue() This is the method to retrieve the current value.
void	increment() This is the key method that has to be both fast and very thread-safe.
void	increment(java.util.Date d, long delta) Used primarily for flushing thread local updates
protected void	init(java.util.Date startDate, CounterValue.CounterType type)
void	reset(java.util.Date startDate) Reset value.
void	setCounter(java.util.Date d, CounterValue value) Counter value setter

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

counter

protected CounterValue counter

samplingTime

protected java.util.Date samplingTime

startDate

protected java.util.Date startDate

Constructor Detail

SimpleCounter

protected SimpleCounter(java.util.Date startDate,
                        CounterValue.CounterType type)

Protected constructor - use createCounter factory method instead

Parameters:

startDate -

Method Detail

createCounter

public static ICounter createCounter(java.util.Date startDate,
                                     CounterValue.CounterType type)

Factory method to create a new counter instance.

Parameters:

startDate -

Returns:

createCounter

public static ICounter createCounter(ICounter copy)

Factory method to create a copy of a counter instance.

Parameters:

startDate -

Returns:

init

protected void init(java.util.Date startDate,
                    CounterValue.CounterType type)

increment

public void increment()

This is the key method that has to be both fast and very thread-safe.

Specified by:

increment in interface ICounter

increment

public void increment(java.util.Date d,
                      long delta)

Description copied from interface: ICounter

Used primarily for flushing thread local updates

Specified by:

increment in interface ICounter

setCounter

public void setCounter(java.util.Date d,
                       CounterValue value)

Description copied from interface: ICounter

Counter value setter

Specified by:

setCounter in interface ICounter

getCounterValue

public CounterValue getCounterValue()

This is the method to retrieve the current value.

Specified by:

getCounterValue in interface ICounter

getCounterDate

public java.util.Date getCounterDate()

This is the method to retrieve the last sampling time.

Specified by:

getCounterDate in interface ICounter

reset

public void reset(java.util.Date startDate)

Reset value.

Specified by:

reset in interface ICounter