com.bigdata.counters
Interface IInstrument<T>

All Known Subinterfaces:

ICounter<T>

All Known Implementing Classes:

HistoryInstrument, Instrument, OneShotInstrument

public interface IInstrument<T>

Interface used to construct a counter that reports on an instrumented value.

Version:

$Id: IInstrument.java 2265 2009-10-26 12:51:06Z thompsonbry $

Author:

Bryan Thompson

Method Summary

T	getValue() Obtain a sample.
long	lastModified() Obtain the timestamp for the last collected sample.
void	setValue(T value, long timestamp) Set the current value.

Method Detail

getValue

T getValue()

Obtain a sample.

lastModified

long lastModified()

Obtain the timestamp for the last collected sample.

setValue

void setValue(T value,
              long timestamp)

Set the current value.

Parameters:

value - The sampled value.

timestamp - The timestamp for that sample.

Throws:

UnsupportedOperationException - if this operation is not allowed.