com.amazonaws.util

Class TimingInfo

java.lang.Object

com.amazonaws.util.TimingInfo

@NotThreadSafe
public class TimingInfo
extends Object

Used both as a base class and a minimal support of timing info.

In contrast to TimingInfoFullSupport, which is intended to be a full support of the timing info, this class only provides a minimal support of start and end time (ie with no-ops for sub-event measurements) for backward compatiblity reasons.

This class is instantiated instead of TimingInfoFullSupport when request metric collection is not required during a particular service request/response cycle.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	TimingInfo(Long startEpochTimeMilli, long startTimeNano, Long endTimeNano) A private ctor to facilitate the deprecation of using millisecond and migration to using nanosecond for timing measurement.

Method Summary

Methods

Modifier and Type	Method and Description
void	addSubMeasurement(String subMeasurementName, TimingInfo timingInfo)
static double	durationMilliOf(long startTimeNano, long endTimeNano) Returns the duration in milliseconds as double, preserving the decimal precision as necessary, for the given start and end time in nanoseconds.
TimingInfo	endTiming()
Map<String,Number>	getAllCounters()
List<TimingInfo>	getAllSubMeasurements(String subMeasurementName)
Number	getCounter(String key)
long	getElapsedTimeMillis() Deprecated.
long	getEndEpochTimeMilli() Deprecated.
Long	getEndEpochTimeMilliIfKnown()
long	getEndTime() Deprecated.
long	getEndTimeNano()
Long	getEndTimeNanoIfKnown()
TimingInfo	getLastSubMeasurement(String subMeasurementName)
long	getStartEpochTimeMilli() Deprecated.
Long	getStartEpochTimeMilliIfKnown()
long	getStartTime() Deprecated.
long	getStartTimeNano()
TimingInfo	getSubMeasurement(String subMeasurementName)
TimingInfo	getSubMeasurement(String subMesurementName, int index)
Map<String,List<TimingInfo>>	getSubMeasurementsByName()
double	getTimeTakenMillis() Deprecated.
Double	getTimeTakenMillisIfKnown()
void	incrementCounter(String key)
boolean	isEndTimeKnown()
boolean	isStartEpochTimeMilliKnown()
static TimingInfo	newTimingInfoFullSupport(long startTimeNano, long endTimeNano) Returns a TimingInfoFullSupport based on the given start and end time in nanosecond, ignoring the wall clock time.
static TimingInfo	newTimingInfoFullSupport(long startEpochTimeMilli, long startTimeNano, long endTimeNano) Returns a TimingInfoFullSupport based on the given start time since epoch in millisecond, and the given start and end time in nanosecond.
void	setCounter(String key, long count)
void	setEndTime(long endTimeMilli) Deprecated.
void	setEndTimeNano(long endTimeNano)
static TimingInfo	startTiming() Captures the current wall clock time (since epoch in millisecond) and the current time (in nanosecond) used for timing measurement.
static TimingInfo	startTimingFullSupport() Captures the current wall clock time (since epoch in millisecond) and the current time (in nanosecond) used for timing measurement.
static TimingInfo	startTimingFullSupport(long startTimeNano) Captures the given start time in nanosecond, ignoring the wall clock time.
String	toString()
static TimingInfo	unmodifiableTimingInfo(long startTimeNano, Long endTimeNano) Returns an instance of TimingInfo that is not modifiable, given the start and end nano times.
static TimingInfo	unmodifiableTimingInfo(long startEpochTimeMilli, long startTimeNano, Long endTimeNano) Returns an instance of TimingInfo that is not modifiable.

Methods inherited from class java.lang.Object

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

Constructor Detail

TimingInfo

protected TimingInfo(Long startEpochTimeMilli,
          long startTimeNano,
          Long endTimeNano)

A private ctor to facilitate the deprecation of using millisecond and migration to using nanosecond for timing measurement.

Parameters:

startEpochTimeMilli - start time since epoch in millisecond

startTimeNano - start time in nanosecond

endTimeNano - end time in nanosecond; or null if not known

Method Detail

startTiming

public static TimingInfo startTiming()

Captures the current wall clock time (since epoch in millisecond) and the current time (in nanosecond) used for timing measurement. For more info, see: https://blogs.oracle.com/dholmes/entry/inside_the_hotspot_vm_clocks

startTimingFullSupport

public static TimingInfo startTimingFullSupport()

Captures the current wall clock time (since epoch in millisecond) and the current time (in nanosecond) used for timing measurement. For more info, see: https://blogs.oracle.com/dholmes/entry/inside_the_hotspot_vm_clocks

startTimingFullSupport

public static TimingInfo startTimingFullSupport(long startTimeNano)

Captures the given start time in nanosecond, ignoring the wall clock time.

Parameters:

startTimeNano - start time in nanosecond

newTimingInfoFullSupport

public static TimingInfo newTimingInfoFullSupport(long startTimeNano,
                                  long endTimeNano)

Returns a TimingInfoFullSupport based on the given start and end time in nanosecond, ignoring the wall clock time.

Parameters:

startTimeNano - start time in nanosecond

endTimeNano - end time in nanosecond

newTimingInfoFullSupport

public static TimingInfo newTimingInfoFullSupport(long startEpochTimeMilli,
                                  long startTimeNano,
                                  long endTimeNano)

Returns a TimingInfoFullSupport based on the given start time since epoch in millisecond, and the given start and end time in nanosecond.

Parameters:

startEpochTimeMilli - start time since epoch in millisecond

startTimeNano - start time in nanosecond

endTimeNano - end time in nanosecond

unmodifiableTimingInfo

public static TimingInfo unmodifiableTimingInfo(long startTimeNano,
                                Long endTimeNano)

Returns an instance of TimingInfo that is not modifiable, given the start and end nano times.

unmodifiableTimingInfo

public static TimingInfo unmodifiableTimingInfo(long startEpochTimeMilli,
                                long startTimeNano,
                                Long endTimeNano)

Returns an instance of TimingInfo that is not modifiable.

Parameters:

startEpochTimeMilli - start time since epoch in millisecond

startTimeNano - start time in nanosecond

endTimeNano - end time in nanosecond; or null if not known

getStartTime

@Deprecated
public final long getStartTime()

Deprecated.

getStartEpochTimeMilli

@Deprecated
public final long getStartEpochTimeMilli()

Deprecated.

getStartEpochTimeMilliIfKnown

public final Long getStartEpochTimeMilliIfKnown()

getStartTimeNano

public final long getStartTimeNano()

getEndTime

@Deprecated
public final long getEndTime()

Deprecated.

getEndEpochTimeMilli

@Deprecated
public final long getEndEpochTimeMilli()

Deprecated.

getEndEpochTimeMilliIfKnown

public final Long getEndEpochTimeMilliIfKnown()

getEndTimeNano

public final long getEndTimeNano()

getEndTimeNanoIfKnown

public final Long getEndTimeNanoIfKnown()

getTimeTakenMillis

@Deprecated
public final double getTimeTakenMillis()

Deprecated.

getTimeTakenMillisIfKnown

public final Double getTimeTakenMillisIfKnown()

durationMilliOf

public static double durationMilliOf(long startTimeNano,
                     long endTimeNano)

Returns the duration in milliseconds as double, preserving the decimal precision as necessary, for the given start and end time in nanoseconds.

getElapsedTimeMillis

@Deprecated
public final long getElapsedTimeMillis()

Deprecated.

isEndTimeKnown

public final boolean isEndTimeKnown()

isStartEpochTimeMilliKnown

public final boolean isStartEpochTimeMilliKnown()

toString

public final String toString()

Overrides:

toString in class Object

setEndTime

@Deprecated
public void setEndTime(long endTimeMilli)

Deprecated.

setEndTimeNano

public void setEndTimeNano(long endTimeNano)

endTiming

public TimingInfo endTiming()

addSubMeasurement

public void addSubMeasurement(String subMeasurementName,
                     TimingInfo timingInfo)

getSubMeasurement

public TimingInfo getSubMeasurement(String subMeasurementName)

getSubMeasurement

public TimingInfo getSubMeasurement(String subMesurementName,
                           int index)

getLastSubMeasurement

public TimingInfo getLastSubMeasurement(String subMeasurementName)

getAllSubMeasurements

public List<TimingInfo> getAllSubMeasurements(String subMeasurementName)

getSubMeasurementsByName

public Map<String,List<TimingInfo>> getSubMeasurementsByName()

getCounter

public Number getCounter(String key)

getAllCounters

public Map<String,Number> getAllCounters()

setCounter

public void setCounter(String key,
              long count)

incrementCounter

public void incrementCounter(String key)