plugin/auto: Reload zones every one minute (#2516)

Automatically submitted.

plugin/auto/setup.go

@@ -77,9 +77,15 @@ func setup(c *caddy.Controller) error {
 }
 
 func autoParse(c *caddy.Controller) (Auto, error) {
+	nilInterval := -1 * time.Second
 	var a = Auto{
-		loader: loader{template: "${1}", re: regexp.MustCompile(`db\.(.*)`), duration: 60 * time.Second},
-		Zones:  &Zones{},
+		loader: loader{
+			template:       "${1}",
+			re:             regexp.MustCompile(`db\.(.*)`),
+			ReloadInterval: nilInterval,
+			duration:       nilInterval,
+		},
+		Zones: &Zones{},
 	}
 
 	config := dnsserver.GetConfig(c)
@@ -141,6 +147,7 @@ func autoParse(c *caddy.Controller) (Auto, error) {
 					if i < 1 {
 						i = 1
 					}
+					log.Warning("TIMEOUT of directory is deprecated. Use RELOAD instead. See https://coredns.io/plugins/auto/#syntax")
 					a.loader.duration = time.Duration(i) * time.Second
 				}
 
@@ -169,5 +176,15 @@ func autoParse(c *caddy.Controller) (Auto, error) {
 			}
 		}
 	}
+
+	if a.loader.ReloadInterval == nilInterval {
+		if a.loader.duration == nilInterval {
+			a.loader.duration = 60 * time.Second
+		}
+		a.loader.ReloadInterval = a.loader.duration
+	} else if a.loader.duration == nilInterval {
+		a.loader.duration = a.loader.ReloadInterval
+	}
+
 	return a, nil
 }