org.apache.cassandra.metrics

Class LatencyMetrics

java.lang.Object

org.apache.cassandra.metrics.LatencyMetrics

Direct Known Subclasses:

ClientRequestMetrics

public class LatencyMetrics
extends java.lang.Object

Metrics about latencies

Field Summary

Fields

Modifier and Type	Field and Description
protected MetricNameFactory	aliasFactory
protected MetricNameFactory	factory
com.codahale.metrics.Timer	latency Latency
protected java.lang.String	namePrefix
com.codahale.metrics.Counter	totalLatency Total latency in micro sec

Constructor Summary

Constructors

Constructor and Description
LatencyMetrics(MetricNameFactory factory, MetricNameFactory aliasFactory, java.lang.String namePrefix)
LatencyMetrics(MetricNameFactory factory, java.lang.String namePrefix) Create LatencyMetrics with given group, type, prefix to append to each metric name, and scope.
LatencyMetrics(MetricNameFactory factory, java.lang.String namePrefix, LatencyMetrics... parents) Create LatencyMetrics with given group, type, prefix to append to each metric name, and scope.
LatencyMetrics(java.lang.String type, java.lang.String scope) Create LatencyMetrics with given group, type, and scope.
LatencyMetrics(java.lang.String type, java.lang.String namePrefix, java.lang.String scope) Create LatencyMetrics with given group, type, prefix to append to each metric name, and scope.

Method Summary

Modifier and Type	Method and Description
void	addNano(long nanos) takes nanoseconds
void	release()

Methods inherited from class java.lang.Object

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

Field Detail

latency

public final com.codahale.metrics.Timer latency

Latency

totalLatency

public final com.codahale.metrics.Counter totalLatency

Total latency in micro sec

factory

protected final MetricNameFactory factory

aliasFactory

protected final MetricNameFactory aliasFactory

namePrefix

protected final java.lang.String namePrefix

Constructor Detail

LatencyMetrics

public LatencyMetrics(java.lang.String type,
                      java.lang.String scope)

Create LatencyMetrics with given group, type, and scope. Name prefix for each metric will be empty.

Parameters:

type - Type name

scope - Scope

LatencyMetrics

public LatencyMetrics(java.lang.String type,
                      java.lang.String namePrefix,
                      java.lang.String scope)

Create LatencyMetrics with given group, type, prefix to append to each metric name, and scope.

Parameters:

type - Type name

namePrefix - Prefix to append to each metric name

scope - Scope of metrics

LatencyMetrics

public LatencyMetrics(MetricNameFactory factory,
                      java.lang.String namePrefix)

Create LatencyMetrics with given group, type, prefix to append to each metric name, and scope.

Parameters:

factory - MetricName factory to use

namePrefix - Prefix to append to each metric name

LatencyMetrics

public LatencyMetrics(MetricNameFactory factory,
                      MetricNameFactory aliasFactory,
                      java.lang.String namePrefix)

LatencyMetrics

public LatencyMetrics(MetricNameFactory factory,
                      java.lang.String namePrefix,
                      LatencyMetrics... parents)

Create LatencyMetrics with given group, type, prefix to append to each metric name, and scope. Any updates to this will also run on parent

Parameters:

factory - MetricName factory to use

namePrefix - Prefix to append to each metric name

parents - any amount of parents to replicate updates to

Method Detail

addNano

public void addNano(long nanos)

takes nanoseconds

release

public void release()