From 8ed8bfb8bc03aa83fc66426688bb8b45b0478902 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Torkel=20=C3=96degaard?= <torkel.odegaard@gmail.com>
Date: Thu, 3 Mar 2016 10:49:30 +0100
Subject: [PATCH] feat(prometheus): added special regex escape for prometheus,
 fixes #4234

---
 .../app/plugins/datasource/prometheus/datasource.ts   | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/public/app/plugins/datasource/prometheus/datasource.ts b/public/app/plugins/datasource/prometheus/datasource.ts
index 69dae38e358..acfc4b876d3 100644
--- a/public/app/plugins/datasource/prometheus/datasource.ts
+++ b/public/app/plugins/datasource/prometheus/datasource.ts
@@ -39,13 +39,22 @@ export function PrometheusDatasource(instanceSettings, $q, backendSrv, templateS
     return backendSrv.datasourceRequest(options);
   };
 
+  function regexEscape(value) {
+    return value.replace(/[\\^$*+?.()|[\]{}]/g, '\\\\$&');
+  }
+
   function interpolateQueryExpr(value, variable, defaultFormatFn) {
     // if no multi or include all do not regexEscape
     if (!variable.multi && !variable.includeAll) {
       return value;
     }
 
-    return defaultFormatFn(value, 'regex', variable);
+    if (typeof value === 'string') {
+      return regexEscape(value);
+    }
+
+    var escapedValues = _.map(value, regexEscape);
+    return escapedValues.join('|');
   };
 
   // Called once per panel (graph)