Explore: support ANSI colors in live logs (#28895)

Closes #28893

Co-authored-by: Ivana <ivana.huckova@gmail.com>

packages/grafana-ui/src/components/index.ts

@@ -96,6 +96,7 @@ export { GraphSeriesToggler, GraphSeriesTogglerAPI } from './Graph/GraphSeriesTo
 export { Collapse, ControlledCollapse } from './Collapse/Collapse';
 export { CollapsableSection } from './Collapse/CollapsableSection';
 export { LogLabels } from './Logs/LogLabels';
+export { LogMessageAnsi } from './Logs/LogMessageAnsi';
 export { LogRows } from './Logs/LogRows';
 export { getLogRowStyles } from './Logs/getLogRowStyles';
 export { ToggleButtonGroup, ToggleButton } from './ToggleButtonGroup/ToggleButtonGroup';

public/app/features/explore/LiveLogs.test.tsx

@@ -55,10 +55,45 @@ describe('LiveLogs', () => {
     expect(wrapper.contains('log message 5')).toBeTruthy();
     expect(wrapper.contains('log message 6')).toBeTruthy();
   });
+
+  it('renders ansi logs', () => {
+    const rows: LogRowModel[] = [
+      makeLog({ uid: '1' }),
+      makeLog({ hasAnsi: true, raw: 'log message \u001B[31m2\u001B[0m', uid: '2' }),
+      makeLog({ hasAnsi: true, raw: 'log message \u001B[31m3\u001B[0m', uid: '3' }),
+    ];
+    const wrapper = mount(
+      <LiveLogsWithTheme
+        logRows={rows}
+        timeZone={'utc'}
+        stopLive={() => {}}
+        onPause={() => {}}
+        onResume={() => {}}
+        isPaused={true}
+      />
+    );
+
+    expect(wrapper.contains('log message 1')).toBeTruthy();
+    expect(wrapper.contains('log message 2')).not.toBeTruthy();
+    expect(wrapper.contains('log message 3')).not.toBeTruthy();
+    expect(wrapper.find('LogMessageAnsi')).toHaveLength(2);
+    expect(
+      wrapper
+        .find('LogMessageAnsi')
+        .first()
+        .prop('value')
+    ).toBe('log message \u001B[31m2\u001B[0m');
+    expect(
+      wrapper
+        .find('LogMessageAnsi')
+        .last()
+        .prop('value')
+    ).toBe('log message \u001B[31m3\u001B[0m');
+  });
 });
 
-const makeLog = (overides: Partial<LogRowModel>): LogRowModel => {
-  const uid = overides.uid || '1';
+const makeLog = (overrides: Partial<LogRowModel>): LogRowModel => {
+  const uid = overrides.uid || '1';
   const entry = `log message ${uid}`;
   return {
     uid,
@@ -75,6 +110,6 @@ const makeLog = (overides: Partial<LogRowModel>): LogRowModel => {
     timeEpochNs: '1000000',
     timeLocal: '',
     timeUtc: '',
-    ...overides,
+    ...overrides,
   };
 };

public/app/features/explore/LiveLogs.tsx

@@ -2,7 +2,7 @@ import React, { PureComponent } from 'react';
 import { css, cx } from 'emotion';
 import tinycolor from 'tinycolor2';
 
-import { Themeable, withTheme, getLogRowStyles, Icon } from '@grafana/ui';
+import { LogMessageAnsi, Themeable, withTheme, getLogRowStyles, Icon } from '@grafana/ui';
 import { GrafanaTheme, LogRowModel, TimeZone, dateTimeFormat } from '@grafana/data';
 
 import { ElapsedTime } from './ElapsedTime';
@@ -151,7 +151,7 @@ class LiveLogs extends PureComponent<Props, State> {
               return (
                 <tr className={cx(logsRow, styles.logsRowFade)} key={row.uid}>
                   <td className={cx(logsRowLocalTime)}>{dateTimeFormat(row.timeEpochMs, { timeZone })}</td>
-                  <td className={cx(logsRowMessage)}>{row.entry}</td>
+                  <td className={cx(logsRowMessage)}>{row.hasAnsi ? <LogMessageAnsi value={row.raw} /> : row.entry}</td>
                 </tr>
               );
             })}