EventMetric (ONOS Java API (2.5.0))

java.lang.Object
- org.onlab.metrics.EventMetric

```
public class EventMetric
extends Object
```
Metric measurements for events.

Constructor Summary

Constructors
Constructor Description

EventMetric(MetricsService metricsService, String componentName, String featureName)
Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`com.codahale.metrics.Meter`	`eventRateMeter()`	Gets the event rate meter.
`void`	`eventReceived()`	Updates the metric measurements for a single event.
`com.codahale.metrics.Gauge<Long>`	`lastEventTimestampGauge()`	Gets the last event timestamp Gauge (ms from the Epoch).
`void`	`registerMetrics()`	Registers the metrics.
`void`	`removeMetrics()`	Removes the metrics.

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

- Constructor Detail
  - EventMetric
```
public EventMetric(MetricsService metricsService,
                   String componentName,
                   String featureName)
```
    Constructor.
    
    Parameters:
    
    metricsService - the Metrics Service to use for Metrics registration and deregistration
    
    componentName - the Metrics Component Name to use for Metrics registration and deregistration
    
    featureName - the Metrics Feature Name to use for Metrics registration and deregistration
- Method Detail
  - registerMetrics
```
public void registerMetrics()
```
    Registers the metrics.
  - removeMetrics
```
public void removeMetrics()
```
    Removes the metrics.
  - eventReceived
```
public void eventReceived()
```
    Updates the metric measurements for a single event.
  - lastEventTimestampGauge
```
public com.codahale.metrics.Gauge<Long> lastEventTimestampGauge()
```
    Gets the last event timestamp Gauge (ms from the Epoch).
    
    Returns:
    
    the last event timestamp Gauge (ms from the Epoch)
  - eventRateMeter
```
public com.codahale.metrics.Meter eventRateMeter()
```
    Gets the event rate meter.
    
    Returns:
    
    the event rate meter