From 8aeb1cc030a72f647a6dfa9acdbf62e2d8aa9e44 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zolt=C3=A1n=20Bedi?= <zoltan.bedi@gmail.com>
Date: Wed, 30 Jun 2021 21:28:18 +0200
Subject: [PATCH] Prometheus: Fix performance issue in editor when too many ids
 (#36176)

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

diff --git a/public/app/plugins/datasource/prometheus/promql.ts b/public/app/plugins/datasource/prometheus/promql.ts
index 1400466551d..681b481d75e 100644
--- a/public/app/plugins/datasource/prometheus/promql.ts
+++ b/public/app/plugins/datasource/prometheus/promql.ts
@@ -436,6 +436,10 @@ const tokenizer: Grammar = {
       },
     },
   ],
+  idList: {
+    pattern: /\d+(\|\d+)+/,
+    alias: 'number',
+  },
   number: /\b-?\d+((\.\d*)?([eE][+-]?\d+)?)?\b/,
   operator: new RegExp(`/[-+*/=%^~]|&&?|\\|?\\||!=?|<(?:=>?|<|>)?|>[>=]?|\\b(?:${OPERATORS.join('|')})\\b`, 'i'),
   punctuation: /[{};()`,.]/,