improves readability of loginping handler

conf/sample.ini

@@ -115,8 +115,8 @@ log_queries =
 # How many days an session can be unused before we inactivate it
 ;login_remember_days = 7
 
-# How often should the login token be rotated. default to '30m'
-;rotate_cookie_every = 30m
+# How often should the login token be rotated. default to '30'
+;rotate_token_minutes = 30
 
 # How long should Grafana keep expired tokens before deleting them
 ;delete_expired_token_after_days = 30

pkg/api/login.go

@@ -78,13 +78,12 @@ func tryOAuthAutoLogin(c *m.ReqContext) bool {
 	return false
 }
 
-func (hs *HTTPServer) LoginAPIPing(c *m.ReqContext) {
-	if !c.IsSignedIn || !c.IsAnonymous {
-		c.JsonApiErr(401, "Unauthorized", nil)
-		return
+func (hs *HTTPServer) LoginAPIPing(c *m.ReqContext) Response {
+	if c.IsSignedIn || c.IsAnonymous {
+		return JSON(200, "Logged in")
 	}
 
-	c.JsonOK("Logged in")
+	return Error(401, "Unauthorized", nil)
 }
 
 func (hs *HTTPServer) LoginPost(c *m.ReqContext, cmd dtos.LoginCommand) Response {