add indication of file added to watcher

umputun · Dec 10, 2023 · a1101fa · a1101fa
1 parent c739a8f
commit a1101fa
Showing 1 changed file with 11 additions and 4 deletions.
diff --git a/app/bot/spam.go b/app/bot/spam.go
@@ -143,10 +143,17 @@ func (s *SpamFilter) watch(ctx context.Context) error {
 	}()
 
 	errs := new(multierror.Error)
-	errs = multierror.Append(errs, watcher.Add(s.params.ExcludedTokensFile))
-	errs = multierror.Append(errs, watcher.Add(s.params.SpamSamplesFile))
-	errs = multierror.Append(errs, watcher.Add(s.params.HamSamplesFile))
-	errs = multierror.Append(errs, watcher.Add(s.params.StopWordsFile))
+	addToWatcher := func(file string) error {
+		if _, err := os.Stat(file); err != nil {
+			return fmt.Errorf("failed to stat file %q: %w", file, err)
+		}
+		log.Printf("[DEBUG] add file %q to watcher", file)
+		return watcher.Add(file)
+	}
+	errs = multierror.Append(errs, addToWatcher(s.params.ExcludedTokensFile))
+	errs = multierror.Append(errs, addToWatcher(s.params.SpamSamplesFile))
+	errs = multierror.Append(errs, addToWatcher(s.params.HamSamplesFile))
+	errs = multierror.Append(errs, addToWatcher(s.params.StopWordsFile))
 	if err := errs.ErrorOrNil(); err != nil {
 		return fmt.Errorf("failed to add some files to watcher: %w", err)
 	}