From 89a0948de0e86c23e6365d787db99656f69a5f28 Mon Sep 17 00:00:00 2001
From: Matias Chomicki <matyax@gmail.com>
Date: Wed, 17 Sep 2025 17:26:16 +0200
Subject: [PATCH] LogListControls: show levels from displayed logs

---
 public/app/features/logs/components/panel/LogList.tsx     | 6 ++++--
 .../features/logs/components/panel/LogListControls.tsx    | 2 +-
 public/app/features/logs/components/panel/processing.ts   | 8 ++++++++
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/public/app/features/logs/components/panel/LogList.tsx b/public/app/features/logs/components/panel/LogList.tsx
index 0916541c4fc..0cd76458975 100644
--- a/public/app/features/logs/components/panel/LogList.tsx
+++ b/public/app/features/logs/components/panel/LogList.tsx
@@ -31,7 +31,7 @@ import { LogListContextProvider, LogListState, useLogListContext } from './LogLi
 import { LogListControls } from './LogListControls';
 import { LOG_LIST_SEARCH_HEIGHT, LogListSearch } from './LogListSearch';
 import { LogListSearchContextProvider, useLogListSearchContext } from './LogListSearchContext';
-import { preProcessLogs, LogListModel } from './processing';
+import { preProcessLogs, LogListModel, getLevelsFromLogs } from './processing';
 import { useKeyBindings } from './useKeyBindings';
 import { usePopoverMenu } from './usePopoverMenu';
 import { LogLineVirtualization, getLogLineSize, LogFieldDimension, ScrollToLogsEvent } from './virtualization';
@@ -410,6 +410,8 @@ const LogListComponent = ({
     [debouncedScrollToItem, filteredLogs]
   );
 
+  const logLevels = useMemo(() => getLevelsFromLogs(processedLogs), [processedLogs]);
+
   if (!containerElement || listHeight == null) {
     // Wait for container to be rendered
     return null;
@@ -417,7 +419,7 @@ const LogListComponent = ({
 
   return (
     <div className={styles.logListContainer}>
-      {showControls && <LogListControls eventBus={eventBus} />}
+      {showControls && <LogListControls logLevels={logLevels} eventBus={eventBus} />}
       {detailsMode === 'sidebar' && showDetails.length > 0 && (
         <LogLineDetails
           containerElement={containerElement}
diff --git a/public/app/features/logs/components/panel/LogListControls.tsx b/public/app/features/logs/components/panel/LogListControls.tsx
index b65903ef1e8..0f7074c7972 100644
--- a/public/app/features/logs/components/panel/LogListControls.tsx
+++ b/public/app/features/logs/components/panel/LogListControls.tsx
@@ -220,7 +220,7 @@ export const LogListControls = ({ eventBus, logLevels = FILTER_LEVELS, visualisa
         ))}
       </Menu>
     ),
-    [filterLevels, onFilterLevelClick, styles.menuItemActive]
+    [filterLevels, logLevels, onFilterLevelClick, styles.menuItemActive]
   );
 
   const downloadMenu = useMemo(
diff --git a/public/app/features/logs/components/panel/processing.ts b/public/app/features/logs/components/panel/processing.ts
index dbb060a744c..4d8236a7a79 100644
--- a/public/app/features/logs/components/panel/processing.ts
+++ b/public/app/features/logs/components/panel/processing.ts
@@ -326,3 +326,11 @@ function countNewLines(log: string, limit = Infinity) {
   }
   return count;
 }
+
+export function getLevelsFromLogs(logs: LogListModel[]) {
+  const levels = new Set<LogLevel>();
+  for (const log of logs) {
+    levels.add(log.logLevel);
+  }
+  return Array.from(levels).filter(level => level != null);
+}