LatencyStats (zkfacade 7.518.53 API)

java.lang.Object
- com.yahoo.vespa.curator.stats.LatencyStats

```
public class LatencyStats
extends Object
```
An instance of LatencyStats keeps track of statistics related to time intervals that start at a particular moment in time and ends at a later time. A typical example is the processing of requests: Each newly received request starts a new interval, and ends when the response is sent.
The statistics only applies to the current time period, and can be retrieved as a LatencyMetrics instance from e.g. getLatencyMetrics(). This fits well with how Yamas works: it collects metrics since last collection every minute or so.

Author:

hakon

See Also:

LatencyMetrics

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static interface LatencyStats.ActiveInterval

Constructor Summary

Constructors
Constructor Description

LatencyStats()
Creates an empty LatencyStats starting the first time period now.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`LatencyMetrics`	`getLatencyMetrics()`	Returns the metrics for the current time period up to now.
`LatencyMetrics`	`getLatencyMetricsAndStartNewPeriod()`	Returns the metrics for the current time period up to now, and starts a new period.
`LatencyStats.ActiveInterval`	`startNewInterval()`	Starts a new (active) interval.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - LatencyStats
```
public LatencyStats()
```
    Creates an empty LatencyStats starting the first time period now.
- Method Detail
  - startNewInterval
```
public LatencyStats.ActiveInterval startNewInterval()
```
    Starts a new (active) interval. The caller MUST call LatencyStats.ActiveInterval.close() on the returned instance exactly once, which will end the interval.
  - getLatencyMetrics
```
public LatencyMetrics getLatencyMetrics()
```
    Returns the metrics for the current time period up to now.
  - getLatencyMetricsAndStartNewPeriod
```
public LatencyMetrics getLatencyMetricsAndStartNewPeriod()
```
    Returns the metrics for the current time period up to now, and starts a new period.