Fix getLogLevelFromKey when non-string supplied (#23654)

packages/grafana-data/src/utils/logs.test.ts

@@ -46,6 +46,9 @@ describe('getLogLevelFromKey()', () => {
   it('returns correct log level when level is capitalized', () => {
     expect(getLogLevelFromKey('INFO')).toBe(LogLevel.info);
   });
+  it('returns unknown log level when level is integer', () => {
+    expect(getLogLevelFromKey(1)).toBe(LogLevel.unknown);
+  });
 });
 
 describe('calculateLogsLabelStats()', () => {

packages/grafana-data/src/utils/logs.ts

@@ -37,8 +37,8 @@ export function getLogLevel(line: string): LogLevel {
   return level;
 }
 
-export function getLogLevelFromKey(key: string): LogLevel {
-  const level = (LogLevel as any)[key.toLowerCase()];
+export function getLogLevelFromKey(key: string | number): LogLevel {
+  const level = (LogLevel as any)[key.toString().toLowerCase()];
   if (level) {
     return level;
   }