From 593863fb9eb65b25ad7627e1ff77bbd79af4c883 Mon Sep 17 00:00:00 2001
From: Mitsuhiro Tanda <mitsuhiro.tanda@gmail.com>
Date: Wed, 28 Sep 2016 18:54:25 +0900
Subject: [PATCH] (prometheus) check time range (#6137)

---
 public/app/plugins/datasource/prometheus/datasource.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/public/app/plugins/datasource/prometheus/datasource.ts b/public/app/plugins/datasource/prometheus/datasource.ts
index e2677b4b8f5..941591791ef 100644
--- a/public/app/plugins/datasource/prometheus/datasource.ts
+++ b/public/app/plugins/datasource/prometheus/datasource.ts
@@ -123,6 +123,10 @@ export function PrometheusDatasource(instanceSettings, $q, backendSrv, templateS
   };
 
   this.performTimeSeriesQuery = function(query, start, end) {
+    if (start > end) {
+      throw { message: 'Invalid time range' };
+    }
+
     var url = '/api/v1/query_range?query=' + encodeURIComponent(query.expr) + '&start=' + start + '&end=' + end + '&step=' + query.step;
     return this._request('GET', url, query.requestId);
   };