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fix: skip collector if pg<17

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Signed-off-by: Michael Todorovic <michael.todorovic@outlook.com>
This commit is contained in:
Michael Todorovic 2024-11-27 15:06:40 +01:00 committed by Nicolas Rodriguez
parent 4c170ed564
commit 1c66044856
1 changed files with 13 additions and 3 deletions

16
collector/pg_stat_checkpointer.go
View File

@ -16,7 +16,9 @@ package collector
import (
"context"
"database/sql"
"log/slog"
"github.com/blang/semver/v4"
"github.com/prometheus/client_golang/prometheus"
)
@ -29,10 +31,11 @@ func init() {
}
type PGStatCheckpointerCollector struct {
log *slog.Logger
}
func NewPGStatCheckpointerCollector(collectorConfig) (Collector, error) {
return &PGStatCheckpointerCollector{}, nil
func NewPGStatCheckpointerCollector(config collectorConfig) (Collector, error) {
return &PGStatCheckpointerCollector{log: config.logger}, nil
}
var (
@ -104,8 +107,15 @@ var (
FROM pg_stat_checkpointer;`
)
func (PGStatCheckpointerCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
func (c PGStatCheckpointerCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
db := instance.getDB()
before17 := instance.version.Compare(semver.MustParse("17.0.0"))
if before17 < 0 {
c.log.Warn("pg_stat_checkpointer collector is not available on PostgreSQL < 17.0.0, skipping")
return nil
}
row := db.QueryRowContext(ctx, statCheckpointerQuery)
// num_timed = nt = bigint