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fix: handle NULL pg_stat_wal.stats_reset (minimal) #2

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fix: handle NULL pg_stat_wal.stats_reset (minimal) #2

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2 changes: 1 addition & 1 deletion pkg/management/postgres/probes.go
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Original file line number Diff line number Diff line change
Expand Up @@ -594,7 +594,7 @@ type PgStatWal struct {
WalSync int64
WalWriteTime float64
WalSyncTime float64
StatsReset string
StatsReset sql.NullString
}

// TryGetPgStatWAL retrieves pg_stat_wal on pg version 14 and further
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16 changes: 8 additions & 8 deletions pkg/management/postgres/webserver/metricserver/wal.go
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Expand Up @@ -50,15 +50,15 @@ func collectPGStatWAL(e *Exporter) error {
return err
}
walMetrics := e.Metrics.PgStatWalMetrics
walMetrics.WalRecords.WithLabelValues(walStat.StatsReset).Set(float64(walStat.WalRecords))
walMetrics.WalFpi.WithLabelValues(walStat.StatsReset).Set(float64(walStat.WalFpi))
walMetrics.WalBytes.WithLabelValues(walStat.StatsReset).Set(float64(walStat.WalBytes))
walMetrics.WALBuffersFull.WithLabelValues(walStat.StatsReset).Set(float64(walStat.WALBuffersFull))
walMetrics.WalRecords.WithLabelValues(walStat.StatsReset.String).Set(float64(walStat.WalRecords))
walMetrics.WalFpi.WithLabelValues(walStat.StatsReset.String).Set(float64(walStat.WalFpi))
walMetrics.WalBytes.WithLabelValues(walStat.StatsReset.String).Set(float64(walStat.WalBytes))
walMetrics.WALBuffersFull.WithLabelValues(walStat.StatsReset.String).Set(float64(walStat.WALBuffersFull))
if version, _ := e.instance.GetPgVersion(); version.Major < 18 {
walMetrics.WalWrite.WithLabelValues(walStat.StatsReset).Set(float64(walStat.WalWrite))
walMetrics.WalSync.WithLabelValues(walStat.StatsReset).Set(float64(walStat.WalSync))
walMetrics.WalWriteTime.WithLabelValues(walStat.StatsReset).Set(walStat.WalWriteTime)
walMetrics.WalSyncTime.WithLabelValues(walStat.StatsReset).Set(walStat.WalSyncTime)
walMetrics.WalWrite.WithLabelValues(walStat.StatsReset.String).Set(float64(walStat.WalWrite))
walMetrics.WalSync.WithLabelValues(walStat.StatsReset.String).Set(float64(walStat.WalSync))
walMetrics.WalWriteTime.WithLabelValues(walStat.StatsReset.String).Set(walStat.WalWriteTime)
walMetrics.WalSyncTime.WithLabelValues(walStat.StatsReset.String).Set(walStat.WalSyncTime)
}

return nil
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