New Logs Panel: Read default font size from storage + add missing unescaped content check + fix mutation (#106755)

* Logs Panel: remove default value to it's taken from local storage code

* processing: do not remove newlines, let truncation handle

* LogList: check and pass unescaped content to context

* LogLine: prevent mutation of searchWords

* grammar: use parseFlags

* grammar: escape regex

public/app/features/logs/components/panel/LogLine.tsx

@@ -236,7 +236,7 @@ const DisplayedFields = ({
   const { matchingUids, search } = useLogListSearchContext();
 
   const searchWords = useMemo(() => {
-    const searchWords = log.searchWords && log.searchWords[0] ? log.searchWords : [];
+    const searchWords = log.searchWords && log.searchWords[0] ? log.searchWords.slice() : [];
     if (search && matchingUids?.includes(log.uid)) {
       searchWords.push(search);
     }
@@ -271,7 +271,7 @@ const LogLineBody = ({ log, styles }: { log: LogListModel; styles: LogLineStyles
   const { matchingUids, search } = useLogListSearchContext();
 
   const highlight = useMemo(() => {
-    const searchWords = log.searchWords && log.searchWords[0] ? log.searchWords : [];
+    const searchWords = log.searchWords && log.searchWords[0] ? log.searchWords.slice() : [];
     if (search && matchingUids?.includes(log.uid)) {
       searchWords.push(search);
     }

public/app/features/logs/components/panel/LogList.test.tsx

@@ -259,5 +259,33 @@ describe('LogList', () => {
 
       expect(screen.queryByPlaceholderText('Search in logs')).not.toBeInTheDocument();
     });
+
+    test('Does not conflict with search words', async () => {
+      logs = [
+        createLogRow({ uid: '1' }),
+        createLogRow({ uid: '2', entry: '(?i)some text', searchWords: ['some text'] }),
+      ];
+
+      render(<LogList {...defaultProps} logs={logs} />);
+
+      expect(screen.queryByPlaceholderText('Search in logs')).not.toBeInTheDocument();
+      expect(screen.getByText('log message 1')).toBeInTheDocument();
+      expect(screen.getByText('some text')).toBeInTheDocument();
+
+      await userEvent.keyboard('{Control>}{f}{/Control}');
+
+      expect(screen.getByPlaceholderText('Search in logs')).toBeInTheDocument();
+
+      await userEvent.type(screen.getByPlaceholderText('Search in logs'), '(?i)');
+
+      expect(screen.getByText('log message 1')).toBeInTheDocument();
+      expect(screen.getByText('(?i)')).toBeInTheDocument();
+      expect(screen.getByText('some text')).toBeInTheDocument();
+
+      await userEvent.clear(screen.getByPlaceholderText('Search in logs'));
+
+      expect(screen.getByText('log message 1')).toBeInTheDocument();
+      expect(screen.getByText('some text')).toBeInTheDocument();
+    });
   });
 });

public/app/features/logs/components/panel/LogList.tsx

@@ -151,6 +151,7 @@ export const LogList = ({
   timeZone,
   wrapLogMessage,
 }: Props) => {
+  const hasUnescapedContent = useMemo(() => logs.some((log) => log.hasUnescapedContent), [logs]);
   return (
     <LogListContextProvider
       app={app}
@@ -161,6 +162,7 @@ export const LogList = ({
       filterLevels={filterLevels}
       fontSize={fontSize}
       getRowContextQuery={getRowContextQuery}
+      hasUnescapedContent={hasUnescapedContent}
       isLabelFilterActive={isLabelFilterActive}
       logs={logs}
       logsMeta={logsMeta}

public/app/features/logs/components/panel/grammar.ts

@@ -1,6 +1,6 @@
 import { Grammar } from 'prismjs';
 
-import { escapeRegex } from '@grafana/data';
+import { escapeRegex, parseFlags } from '@grafana/data';
 
 import { LogListModel } from './processing';
 
@@ -30,14 +30,26 @@ export const generateTextMatchGrammar = (
   highlightWords: string[] | undefined = [],
   search: string | undefined
 ): Grammar => {
-  const textMatches = [...highlightWords];
+  /**
+   * See:
+   * - https://github.com/grafana/grafana/blob/96f1582c36f94cf4ac7621b7af86bc9e2ad626fb/public/app/features/logs/components/LogRowMessage.tsx#L67
+   * - https://github.com/grafana/grafana/blob/96f1582c36f94cf4ac7621b7af86bc9e2ad626fb/packages/grafana-data/src/text/text.ts#L12
+   */
+  const expressions = highlightWords.map((word) => {
+    const { cleaned, flags } = parseFlags(cleanNeedle(word));
+    return new RegExp(`(?:${cleaned})`, flags);
+  });
   if (search) {
-    textMatches.push(escapeRegex(search));
+    expressions.push(new RegExp(escapeRegex(search), 'gi'));
   }
-  if (!textMatches.length) {
+  if (!expressions.length) {
     return {};
   }
   return {
-    'log-search-match': new RegExp(textMatches.join('|'), 'g'),
+    'log-search-match': expressions,
   };
 };
+
+const cleanNeedle = (needle: string): string => {
+  return needle.replace(/[[{(][\w,.\/:;<=>?:*+]+$/, '');
+};

public/app/features/logs/components/panel/processing.ts

@@ -88,9 +88,7 @@ export class LogListModel implements LogRowModel {
 
   get body(): string {
     if (this._body === undefined) {
-      let body = this.collapsed ? this.raw.substring(0, getTruncationLength(null)) : this.raw;
-      // Turn it into a single-line log entry for the list
-      this._body = body.replace(/(\r\n|\n|\r)/g, '');
+      this._body = this.collapsed ? this.raw.substring(0, getTruncationLength(null)) : this.raw;
     }
     return this._body;
   }

public/app/plugins/panel/logs/module.tsx

@@ -87,7 +87,6 @@ export const plugin = new PanelPlugin<Options>(LogsPanel)
               },
             ],
           },
-          defaultValue: 'default',
         });
     }