From 41ae376aa4abbb0576c00cacdd0e93275a20d090 Mon Sep 17 00:00:00 2001
From: Andrew Hackmann <5140848+bossinc@users.noreply.github.com>
Date: Wed, 17 Jul 2024 15:16:07 -0700
Subject: [PATCH] Influxdb: Fix `toMetricFindValue` function (#90514)

Improved toMetricFindValue to be quicker
---
 .../plugins/datasource/influxdb/datasource.ts | 21 +++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/public/app/plugins/datasource/influxdb/datasource.ts b/public/app/plugins/datasource/influxdb/datasource.ts
index b94cb115592..ea1c4e266f7 100644
--- a/public/app/plugins/datasource/influxdb/datasource.ts
+++ b/public/app/plugins/datasource/influxdb/datasource.ts
@@ -30,7 +30,6 @@ import {
   BackendDataSourceResponse,
   DataSourceWithBackend,
   FetchResponse,
-  frameToMetricFindValue,
   getBackendSrv,
   getTemplateSrv,
   TemplateSrv,
@@ -414,13 +413,23 @@ export default class InfluxDatasource extends DataSourceWithBackend<InfluxQuery,
   }
 
   toMetricFindValue(rsp: DataQueryResponse): MetricFindValue[] {
-    const data = rsp.data ?? [];
+    const valueMap = new Map<string, MetricFindValue>();
     // Create MetricFindValue object for all frames
-    const values = data.map((d) => frameToMetricFindValue(d)).flat();
-    // Filter out duplicate elements
-    return values.filter((elm, idx, self) => idx === self.findIndex((t) => t.text === elm.text));
+    rsp?.data?.forEach((frame: DataFrame) => {
+      if (frame && frame.length > 0) {
+        let field = frame.fields.find((f) => f.type === FieldType.string);
+        if (!field) {
+          field = frame.fields.find((f) => f.type !== FieldType.time);
+        }
+        if (field) {
+          field.values.forEach((v) => {
+            valueMap.set(v.toString(), { text: v.toString() });
+          });
+        }
+      }
+    });
+    return Array.from(valueMap.values());
   }
-
   // By implementing getTagKeys and getTagValues we add ad-hoc filters functionality
   // Used in public/app/features/variables/adhoc/picker/AdHocFilterKey.tsx::fetchFilterKeys
   getTagKeys(options?: DataSourceGetTagKeysOptions<InfluxQuery>) {