Package com.wavefront.agent.preprocessor

Class PreprocessorRuleMetrics

java.lang.Object

com.wavefront.agent.preprocessor.PreprocessorRuleMetrics

public class PreprocessorRuleMetrics
extends Object

A helper class for instrumenting preprocessor rules. Tracks two counters: number of times the rule has been successfully applied, and counter of CPU time (nanos) spent on applying the rule to troubleshoot possible performance issues.

Author:

[email protected]

Constructor Summary

Constructors

Constructor	Description
PreprocessorRuleMetrics(com.yammer.metrics.core.Counter ruleAppliedCounter, com.yammer.metrics.core.Counter ruleCpuTimeNanosCounter, com.yammer.metrics.core.Counter ruleCheckedCounter)

Method Summary

Modifier and Type	Method	Description
void	incrementRuleAppliedCounter()	Increment ruleAppliedCounter (if available) by 1
void	ruleEnd(long ruleStartTime)	Measure rule execution time and add it to ruleCpuTimeNanosCounter (if available)
long	ruleStart()	Mark rule start time, increment ruleCheckedCounter (if available) by 1

Methods inherited from class java.lang.Object

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

Constructor Detail

PreprocessorRuleMetrics

public PreprocessorRuleMetrics(@Nullable
                               com.yammer.metrics.core.Counter ruleAppliedCounter,
                               @Nullable
                               com.yammer.metrics.core.Counter ruleCpuTimeNanosCounter,
                               @Nullable
                               com.yammer.metrics.core.Counter ruleCheckedCounter)

Method Detail

incrementRuleAppliedCounter

public void incrementRuleAppliedCounter()

Increment ruleAppliedCounter (if available) by 1

ruleEnd

public void ruleEnd(long ruleStartTime)

Measure rule execution time and add it to ruleCpuTimeNanosCounter (if available)

Parameters:

ruleStartTime - rule start time

ruleStart

public long ruleStart()

Mark rule start time, increment ruleCheckedCounter (if available) by 1

Returns:

start time in nanos