com.alibaba.metrics

类 TimerImpl

java.lang.Object

com.alibaba.metrics.TimerImpl

所有已实现的接口:

Counting, Metered, Metric, Sampling, Timer

public class TimerImpl
extends Object
implements Timer

A timer metric which aggregates timing durations and provides duration statistics, plus throughput statistics via Meter.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	TimerImpl.ContextImpl A timing context.

从接口继承的嵌套类/接口 com.alibaba.metrics.Timer

Timer.Context

构造器概要

构造器

构造器和说明
TimerImpl() Creates a new Timer using an ExponentiallyDecayingReservoir and the default Clock.
TimerImpl(int interval)
TimerImpl(int interval, ReservoirType type)
TimerImpl(Reservoir reservoir, Clock clock, int interval)
TimerImpl(ReservoirType reservoir) Creates a new Timer that uses the given Reservoir.
TimerImpl(ReservoirType reservoir, Clock clock, int interval) Creates a new Timer that uses the given Reservoir and Clock.

方法概要

限定符和类型	方法和说明
long	getCount()
double	getFifteenMinuteRate()
double	getFiveMinuteRate()
Map<Long,Long>	getInstantCount()
Map<Long,Long>	getInstantCount(long startTime)
int	getInstantCountInterval()
double	getMeanRate()
double	getOneMinuteRate()
Snapshot	getSnapshot()
long	lastUpdateTime()
Timer.Context	time() Returns a new Context.
<T> T	time(Callable<T> event) Times and records the duration of event.
void	update(long duration, TimeUnit unit) Adds a recorded duration.

从类继承的方法 java.lang.Object

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

构造器详细资料

TimerImpl

public TimerImpl()

Creates a new Timer using an ExponentiallyDecayingReservoir and the default Clock.

TimerImpl

public TimerImpl(int interval)

TimerImpl

public TimerImpl(int interval,
                 ReservoirType type)

TimerImpl

public TimerImpl(ReservoirType reservoir)

Creates a new Timer that uses the given Reservoir.

参数:

reservoir - the Reservoir implementation the timer should use

TimerImpl

public TimerImpl(ReservoirType reservoir,
                 Clock clock,
                 int interval)

Creates a new Timer that uses the given Reservoir and Clock.

参数:

reservoir - the Reservoir implementation the timer should use

clock - the Clock implementation the timer should use

interval - the interval in seconds for bucket counter

TimerImpl

public TimerImpl(Reservoir reservoir,
                 Clock clock,
                 int interval)

方法详细资料

update

public void update(long duration,
                   TimeUnit unit)

Adds a recorded duration.

指定者:

update 在接口中 Timer

参数:

duration - the length of the duration

unit - the scale unit of duration

time

public <T> T time(Callable<T> event)
           throws Exception

Times and records the duration of event.

指定者:

time 在接口中 Timer

类型参数:

T - the type of the value returned by event

参数:

event - a Callable whose Callable.call() method implements a process whose duration should be timed

返回:

the value returned by event

抛出:

Exception - if event throws an Exception

time

public Timer.Context time()

Returns a new Context.

指定者:

time 在接口中 Timer

返回:

a new Context

另请参阅:

Context

getCount

public long getCount()

指定者:

getCount 在接口中 Counting

指定者:

getCount 在接口中 Metered

getFifteenMinuteRate

public double getFifteenMinuteRate()

指定者:

getFifteenMinuteRate 在接口中 Metered

getFiveMinuteRate

public double getFiveMinuteRate()

指定者:

getFiveMinuteRate 在接口中 Metered

getMeanRate

public double getMeanRate()

指定者:

getMeanRate 在接口中 Metered

getOneMinuteRate

public double getOneMinuteRate()

指定者:

getOneMinuteRate 在接口中 Metered

getInstantCount

public Map<Long,Long> getInstantCount()

指定者:

getInstantCount 在接口中 Metered

getSnapshot

public Snapshot getSnapshot()

指定者:

getSnapshot 在接口中 Sampling

getInstantCountInterval

public int getInstantCountInterval()

指定者:

getInstantCountInterval 在接口中 Metered

getInstantCount

public Map<Long,Long> getInstantCount(long startTime)

指定者:

getInstantCount 在接口中 Metered

lastUpdateTime

public long lastUpdateTime()

指定者:

lastUpdateTime 在接口中 Metric