Add warning when file input has no matches

observIQ · Jul 9, 2020 · 9b74136 · 9b74136
1 parent 8b756aa
commit 9b74136
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/plugin/builtin/input/file/file.go b/plugin/builtin/input/file/file.go
@@ -191,6 +191,7 @@ func (f *FileInput) Start() error {
 				return
 			case <-globTicker.C:
 				matches := getMatches(f.Include, f.Exclude)
+				f.warnIfNoMatches(matches, firstCheck)
 				for _, match := range matches {
 					f.checkFile(ctx, match, firstCheck)
 				}
@@ -205,6 +206,15 @@ func (f *FileInput) Start() error {
 	return nil
 }
 
+func (f *FileInput) warnIfNoMatches(matches []string, firstCheck bool) {
+	if firstCheck && len(matches) == 0 {
+		f.Warnw(
+			"no files match the configured include patterns",
+			"include", f.Include,
+		)
+	}
+}
+
 func (f *FileInput) Stop() error {
 	f.cancel()
 	f.wg.Wait()