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File descriptor leak in saveStateSnapshot #188

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File descriptor leak in saveStateSnapshot #188

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9 changes: 8 additions & 1 deletion internal/server/router.go
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Original file line number Diff line number Diff line change
Expand Up @@ -341,7 +341,7 @@ func (r *Router) installLoadBalancer(name string, slot TargetSlot, lb *LoadBalan
return replaced, err
}

func (r *Router) saveStateSnapshot() error {
func (r *Router) saveStateSnapshot() (err error) {
services := []*Service{}
r.withReadLock(func() error {
for _, service := range r.services.All() {
Expand All @@ -352,8 +352,15 @@ func (r *Router) saveStateSnapshot() error {

f, err := os.Create(r.statePath)
if err != nil {
slog.Error("Unable to create state file", "error", err, "path", r.statePath)
return err
}
defer func() {
if cerr := f.Close(); cerr != nil {
slog.Error("Unable to close state file", "error", cerr, "path", r.statePath)
err = errors.Join(err, cerr)
}
}()

err = json.NewEncoder(f).Encode(services)
if err != nil {
Expand Down