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probe: clean-up database connection after probe to prevent connection leak

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Signed-off-by: Kurtis Bass <kurtis.bass@hinge.co>
This commit is contained in:
Kurtis Bass 2022-12-14 14:30:13 -05:00
parent 9bd9d83d73
commit 76223cdda8
2 changed files with 7 additions and 0 deletions
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3
cmd/postgres_exporter/probe.go
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@ -104,6 +104,9 @@ func handleProbe(logger log.Logger) http.HandlerFunc {
return return
} }
// Cleanup underlying connections to prevent connection leaks
defer pc.Close()
// TODO(@sysadmind): Remove the registry.MustRegister() call below and instead handle the collection here. That will allow // TODO(@sysadmind): Remove the registry.MustRegister() call below and instead handle the collection here. That will allow
// for the passing of context, handling of timeouts, and more control over the collection. // for the passing of context, handling of timeouts, and more control over the collection.
// The current NewProbeCollector() implementation relies on the MustNewConstMetric() call to create the metrics which is not // The current NewProbeCollector() implementation relies on the MustNewConstMetric() call to create the metrics which is not

4
collector/probe.go
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@ -83,3 +83,7 @@ func (pc *ProbeCollector) Collect(ch chan<- prometheus.Metric) {
} }
wg.Wait() wg.Wait()
} }
func (pc *ProbeCollector) Close() error {
return pc.db.Close()
}