Package com.atlassian.greenhopper.service.lexorank

Class LexoRankStatisticsAgent

java.lang.Object

com.atlassian.greenhopper.service.lexorank.LexoRankStatisticsAgent

@Service
public class LexoRankStatisticsAgent
extends Object

This class collects LexoRankManager statistics. This is done by calling the startOperation, endOperation at the start and end of rank operations, and calling startOperationStep and endOperationStep at the start nad end of operation steps. The agent will then have enough information to determine the frequency and duration of these operations and operation steps. Operation steps are nested within operations, eg startOperation(RANK_AFTER) startOperationStep(HEAL_RANKVALUE) endOperationStep(HEAL_RANKVALUE) startOperationStep(BACKOFF_YIELD) endOperationStep(BACKOFF_YIELD) endOperation(RANK_AFTER)

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	LexoRankStatisticsAgent.CollectorJob	A scheduled job that generates a report of the collected statistics.
static enum	LexoRankStatisticsAgent.Operation	Operations currently supported by the statistics agent.
static enum	LexoRankStatisticsAgent.OperationStep
protected static class	LexoRankStatisticsAgent.StatsEvent

Field Summary

Fields

Modifier and Type	Field	Description
protected static final LoggerWrapper	log

Constructor Summary

Constructors

Constructor	Description
LexoRankStatisticsAgent()

Method Summary

Modifier and Type	Method	Description
void	endOperation(LexoRankStatisticsAgent.Operation operation)	End a statistics operation.
void	endOperationStep(LexoRankStatisticsAgent.OperationStep operationStep)
String	generateReport()	Finish processing any outstanding statistics events, and then generate a report.
void	start()	Start the statistics agent.
void	startOperation(LexoRankStatisticsAgent.Operation operation)
void	startOperationStep(LexoRankStatisticsAgent.OperationStep operationStep)	Start a statistics operation.
void	stop()	Stop the statistics agent.

Methods inherited from class java.lang.Object

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

Field Details

log

protected static final LoggerWrapper log

Constructor Details

LexoRankStatisticsAgent

public LexoRankStatisticsAgent()

Method Details

start

public void start()

Start the statistics agent.

stop

public void stop()

Stop the statistics agent.

startOperation

public void startOperation(LexoRankStatisticsAgent.Operation operation)

startOperationStep

public void startOperationStep(LexoRankStatisticsAgent.OperationStep operationStep)

Start a statistics operation.

Parameters:

operationStep - is the operation step name.

endOperation

public void endOperation(LexoRankStatisticsAgent.Operation operation)

End a statistics operation.

Parameters:

operation - is the operation name.

endOperationStep

public void endOperationStep(LexoRankStatisticsAgent.OperationStep operationStep)

generateReport

public String generateReport()

Finish processing any outstanding statistics events, and then generate a report.

Returns:

the report.