Logs: Use "labels" data frame field if type "other" in log details (#77806)

* Logs: Use labels field if time other

* Keep loki test

public/app/features/logs/components/logParser.test.ts

@@ -46,15 +46,10 @@ describe('logParser', () => {
       expect(getAllFields(createScenario(-0))).toHaveLength(1);
     });
 
-    it('should filter out field with labels name old-loki-style frame', () => {
+    it('should filter out field with labels in frame', () => {
       const logRow = createLogRow({
         entryFieldIndex: 1,
         dataFrame: new MutableDataFrame({
-          meta: {
-            custom: {
-              frameType: 'LabeledTimeValues',
-            },
-          },
           refId: 'A',
           fields: [
             testTimeField,

public/app/features/logs/legacyLogsFrame.ts

@@ -1,6 +1,6 @@
 import { DataFrame, FieldCache, FieldType, Field, Labels, FieldWithIndex } from '@grafana/data';
 
-import type { LogsFrame } from './logsFrame';
+import { logFrameLabelsToLabels, LogsFrame } from './logsFrame';
 
 // take the labels from the line-field, and "stretch" it into an array
 // with the length of the frame (so there are the same labels for every row)
@@ -15,7 +15,7 @@ function makeLabelsArray(lineField: Field, length: number): Labels[] | null {
   }
 }
 
-// we decide if the frame is old-loki-style frame, and adjust the behavior.
+// if the frame has "labels" field with type "other", adjust the behavior.
 // we also have to return the labels-field (if we used it),
 // to be able to remove it from the unused-fields, later.
 function makeLabelsGetter(
@@ -23,11 +23,13 @@ function makeLabelsGetter(
   lineField: Field,
   frame: DataFrame
 ): [FieldWithIndex | null, () => Labels[] | null] {
-  if (frame.meta?.custom?.frameType === 'LabeledTimeValues') {
+  // If we have labels field with type "other", use that
   const labelsField = cache.getFieldByName('labels');
-    return labelsField === undefined ? [null, () => null] : [labelsField, () => labelsField.values];
+  if (labelsField !== undefined && labelsField.type === FieldType.other) {
+    const values = labelsField.values.map(logFrameLabelsToLabels);
+    return [labelsField, () => values];
   } else {
-    // we use the labels on the line-field, and make an array with it
+    // Otherwise we use the labels on the line-field, and make an array with it
     return [null, () => makeLabelsArray(lineField, frame.length)];
   }
 }

public/app/features/logs/logsFrame.test.ts

@@ -96,6 +96,39 @@ describe('parseLogsFrame should parse different logs-dataframe formats', () => {
     expect(result?.extraFields).toStrictEqual([]);
   });
 
+  it('should parse frames with labels field of type other', () => {
+    const time = makeTime('Time', [1687185711795, 1687185711995]);
+    const line = makeString('Line', ['line1', 'line2']);
+    const id = makeString('id', ['id1', 'id2']);
+    const ns = makeString('tsNs', ['1687185711795123456', '1687185711995987654']);
+    const labels = makeObject('labels', [
+      { counter: '38141', label: 'val2', level: 'warning' },
+      { counter: '38143', label: 'val2', level: 'info' },
+    ]);
+
+    const result = parseLogsFrame({
+      fields: [labels, time, line, ns, id],
+      length: 2,
+    });
+
+    expect(result).not.toBeNull();
+
+    expect(result!.timeField.values[0]).toBe(time.values[0]);
+    expect(result!.bodyField.values[0]).toBe(line.values[0]);
+    expect(result!.idField?.values[0]).toBe(id.values[0]);
+    expect(result!.timeNanosecondField?.values[0]).toBe(ns.values[0]);
+    expect(result!.severityField).toBeNull();
+    expect(result!.getLogFrameLabels()).toStrictEqual([
+      { counter: '38141', label: 'val2', level: 'warning' },
+      { counter: '38143', label: 'val2', level: 'info' },
+    ]);
+    expect(result!.getLogFrameLabelsAsLabels()).toStrictEqual([
+      { counter: '38141', label: 'val2', level: 'warning' },
+      { counter: '38143', label: 'val2', level: 'info' },
+    ]);
+    expect(result?.extraFields).toStrictEqual([]);
+  });
+
   it('should parse a Loki-style frame (single-frame, labels-in-json)', () => {
     const time = makeTime('Time', [1687185711795, 1687185711995]);
     const line = makeString('Line', ['line1', 'line2']);
@@ -145,11 +178,6 @@ describe('parseLogsFrame should parse different logs-dataframe formats', () => {
     const level = makeString('level', ['info', 'error']);
 
     const result = parseLogsFrame({
-      meta: {
-        custom: {
-          frameType: 'LabeledTimeValues',
-        },
-      },
       fields: [time, line, source, level, host],
       length: 2,
     });

public/app/features/logs/logsModel.test.ts

@@ -436,9 +436,6 @@ describe('dataFrameToLogsModel', () => {
         ],
         meta: {
           limit: 1000,
-          custom: {
-            frameType: 'LabeledTimeValues',
-          },
         },
         refId: 'A',
       }),
@@ -516,25 +513,15 @@ describe('dataFrameToLogsModel', () => {
       type: FieldType.string,
       values: ['line1'],
     };
-
-    const meta = {
-      custom: {
-        frameType: 'LabeledTimeValues',
-      },
-    };
-
     const frame1 = new MutableDataFrame({
-      meta,
       fields: [labels, time, line],
     });
 
     const frame2 = new MutableDataFrame({
-      meta,
       fields: [time, labels, line],
     });
 
     const frame3 = new MutableDataFrame({
-      meta,
       fields: [time, line, labels],
     });
 

public/app/features/logs/logsModel_parse.test.ts

@@ -373,7 +373,7 @@ describe('logSeriesToLogsModel should parse different logs-dataframe formats', (
     expect(logSeriesToLogsModel(frames)).toStrictEqual(expected);
   });
 
-  it('should parse a Loki-style frame (single-frame, labels-in-json)', () => {
+  it('should parse a frame with a labels field (single-frame, labels-in-json)', () => {
     const frames: DataFrame[] = [
       {
         refId: 'A',
@@ -427,11 +427,6 @@ describe('logSeriesToLogsModel should parse different logs-dataframe formats', (
           },
         ],
         length: 3,
-        meta: {
-          custom: {
-            frameType: 'LabeledTimeValues',
-          },
-        },
       },
     ];