From c681c76cc85348438a03f3e09661ac6aa59d7c7c Mon Sep 17 00:00:00 2001
From: Edward Welch <edward.welch@grafana.com>
Date: Mon, 15 Apr 2019 20:03:19 -0400
Subject: [PATCH] periodically clean up positions file, removing any files
which no longer exist
---
pkg/promtail/positions/positions.go | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/pkg/promtail/positions/positions.go b/pkg/promtail/positions/positions.go
index c2dedf13..cddd031c 100644
--- a/pkg/promtail/positions/positions.go
+++ b/pkg/promtail/positions/positions.go
@@ -107,6 +107,7 @@ func (p *Positions) run() {
return
case <-ticker.C:
p.save()
+ p.cleanup()
}
}
}
@@ -124,6 +125,21 @@ func (p *Positions) save() {
}
}
+func (p *Positions) cleanup() {
+ for k := range p.positions {
+ if _, err := os.Stat(k); err == nil {
+ // File still exists.
+ } else if os.IsNotExist(err) {
+ // File no longer exists.
+ p.Remove(k)
+ } else {
+ // Can't determine if file exists or not, some other error.
+ level.Warn(p.logger).Log("msg", "could not determine if log file "+
+ "still exists while cleaning positions file", "error", err)
+ }
+ }
+}
+
func readPositionsFile(filename string) (map[string]int64, error) {
buf, err := ioutil.ReadFile(filepath.Clean(filename))
if err != nil {
--
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