Package com.mysql.cj.log

Class BaseMetricsHolder

java.lang.Object

com.mysql.cj.log.BaseMetricsHolder

Direct Known Subclasses:

ClusterAwareTimeMetricsHolder

public class BaseMetricsHolder
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field	Description
protected static int	HISTOGRAM_BUCKETS
protected long	longestQueryTimeMs	If gathering metrics, what was the execution time of the longest query so far ?
protected long	maximumNumberTablesAccessed
protected long	minimumNumberTablesAccessed
protected long	numberOfPreparedExecutes	When was the last time we reported metrics?
protected long	numberOfPrepares
protected long	numberOfQueriesIssued
protected long	numberOfResultSetsCreated
protected long[]	numTablesMetricsHistBreakpoints
protected int[]	numTablesMetricsHistCounts
protected long[]	oldHistBreakpoints
protected int[]	oldHistCounts
protected long[]	perfMetricsHistBreakpoints
protected int[]	perfMetricsHistCounts
protected long	queryTimeCount
protected double	queryTimeMean
protected double	queryTimeSum
protected double	queryTimeSumSquares
protected long	shortestQueryTimeMs
protected double	totalQueryTimeMs

Constructor Summary

Constructors

Constructor	Description
BaseMetricsHolder()

Method Summary

Modifier and Type	Method	Description
boolean	checkAbonormallyLongQuery(long millisOrNanos)	Update statistics that allows the driver to determine if a query is slow enough to be logged, and return the estimation result for millisOrNanos value.
void	incrementNumberOfPreparedExecutes()
void	incrementNumberOfPrepares()
void	incrementNumberOfResultSetsCreated()
void	registerQueryExecutionTime(long queryTimeMs)
void	reportMetrics(Log log)
void	reportNumberOfTablesAccessed(int numTablesAccessed)
void	reportQueryTime(long millisOrNanos)

Methods inherited from class java.lang.Object

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

Field Details

HISTOGRAM_BUCKETS

protected static final int HISTOGRAM_BUCKETS

See Also:

Constant Field Values

longestQueryTimeMs

protected long longestQueryTimeMs

If gathering metrics, what was the execution time of the longest query so far ?

maximumNumberTablesAccessed

protected long maximumNumberTablesAccessed

minimumNumberTablesAccessed

protected long minimumNumberTablesAccessed

numberOfPreparedExecutes

protected long numberOfPreparedExecutes

When was the last time we reported metrics?

numberOfPrepares

protected long numberOfPrepares

numberOfQueriesIssued

protected long numberOfQueriesIssued

numberOfResultSetsCreated

protected long numberOfResultSetsCreated

numTablesMetricsHistBreakpoints

protected long[] numTablesMetricsHistBreakpoints

numTablesMetricsHistCounts

protected int[] numTablesMetricsHistCounts

oldHistBreakpoints

protected long[] oldHistBreakpoints

oldHistCounts

protected int[] oldHistCounts

shortestQueryTimeMs

protected long shortestQueryTimeMs

totalQueryTimeMs

protected double totalQueryTimeMs

perfMetricsHistBreakpoints

protected long[] perfMetricsHistBreakpoints

perfMetricsHistCounts

protected int[] perfMetricsHistCounts

queryTimeCount

protected long queryTimeCount

queryTimeSum

protected double queryTimeSum

queryTimeSumSquares

protected double queryTimeSumSquares

queryTimeMean

protected double queryTimeMean

Constructor Details

BaseMetricsHolder

public BaseMetricsHolder()

Method Details

registerQueryExecutionTime

public void registerQueryExecutionTime(long queryTimeMs)

Parameters:

queryTimeMs - query execution time in milliseconds

reportMetrics

public void reportMetrics(Log log)

reportNumberOfTablesAccessed

public void reportNumberOfTablesAccessed(int numTablesAccessed)

incrementNumberOfPreparedExecutes

public void incrementNumberOfPreparedExecutes()

incrementNumberOfPrepares

public void incrementNumberOfPrepares()

incrementNumberOfResultSetsCreated

public void incrementNumberOfResultSetsCreated()

reportQueryTime

public void reportQueryTime(long millisOrNanos)

checkAbonormallyLongQuery

public boolean checkAbonormallyLongQuery(long millisOrNanos)

Update statistics that allows the driver to determine if a query is slow enough to be logged, and return the estimation result for millisOrNanos value.

Used in case autoSlowLog=true.

Parameters:

millisOrNanos - query execution time

Returns:

true if millisOrNanos is outside the 99th percentile?