feat(frontend): wire search() into the query builder editor

Regenerating the parser made search() lex and parse, but the editor did not
know the new token: the cursor on `search` resolved to no context, so the
function suggestion list never opened and search() was never offered as a
completion. Recent-query dedup also saw SEARCH(...) and search(...) as two
distinct queries.

Register search alongside the has family, and treat a search() argument as
the free text it is rather than as a key. The bare form search(x) lexes its
term as one, so it drew attribute-key suggestions and became a phantom
filter item that the log detail drawer would rebuild into a real filter.

Only the logs condition builder implements search(); traces and metrics
reject it as an unsupported operator, so the suggestion is gated to logs.

frontend/src/components/QueryBuilderV2/QueryV2/QuerySearch/QuerySearch.tsx

@@ -59,6 +59,7 @@ import {
 	dedupeOptionsByLabel,
 	getFieldContextPrefix,
 	getRecentOptions,
+	isSupportedFunction,
 	renderRecentDeleteButton,
 } from './utils';
 
@@ -1276,11 +1277,13 @@ function QuerySearch({
 		}
 
 		if (queryContext.isInFunction) {
-			options = Object.values(QUERY_BUILDER_FUNCTIONS).map((option) => ({
-				label: option,
-				apply: `${option}()`,
-				type: 'function',
-			}));
+			options = Object.values(QUERY_BUILDER_FUNCTIONS)
+				.filter((option) => isSupportedFunction(option, dataSource))
+				.map((option) => ({
+					label: option,
+					apply: `${option}()`,
+					type: 'function',
+				}));
 
 			// Add space after selection for functions
 			const optionsWithSpace = addSpaceToOptions(options);

frontend/src/components/QueryBuilderV2/QueryV2/QuerySearch/__tests__/utils.test.ts

@@ -1,8 +1,12 @@
+import { QUERY_BUILDER_FUNCTIONS } from 'constants/antlrQueryConstants';
+import { DataSource } from 'types/common/queryBuilder';
+
 import {
 	combineInitialAndUserExpression,
 	dedupeOptionsByLabel,
 	getFieldContextPrefix,
 	getUserExpressionFromCombined,
+	isSupportedFunction,
 } from '../utils';
 
 describe('entityLogsExpression', () => {
@@ -118,3 +122,19 @@ describe('dedupeOptionsByLabel', () => {
 		expect(dedupeOptionsByLabel([])).toStrictEqual([]);
 	});
 });
+
+describe('isSupportedFunction', () => {
+	const { HASANY, SEARCH } = QUERY_BUILDER_FUNCTIONS;
+
+	it('allows the has family on every signal', () => {
+		[DataSource.LOGS, DataSource.TRACES, DataSource.METRICS].forEach((signal) => {
+			expect(isSupportedFunction(HASANY, signal)).toBe(true);
+		});
+	});
+
+	it('allows search on logs only', () => {
+		expect(isSupportedFunction(SEARCH, DataSource.LOGS)).toBe(true);
+		expect(isSupportedFunction(SEARCH, DataSource.TRACES)).toBe(false);
+		expect(isSupportedFunction(SEARCH, DataSource.METRICS)).toBe(false);
+	});
+});

frontend/src/components/QueryBuilderV2/QueryV2/QuerySearch/utils.ts

@@ -1,6 +1,7 @@
 import { closeCompletion, startCompletion } from '@codemirror/autocomplete';
 import type { Completion } from '@codemirror/autocomplete';
 import type { EditorView } from '@uiw/react-codemirror';
+import { QUERY_BUILDER_FUNCTIONS } from 'constants/antlrQueryConstants';
 import dayjs from 'dayjs';
 import { normalizeFilterExpression } from 'lib/recentQueries/normalize';
 import * as recentQueriesStore from 'lib/recentQueries/recentQueriesStore';
@@ -15,6 +16,15 @@ import {
 	RECENTS_SECTION,
 } from './constants';
 
+// search() lives in the logs condition builder only; traces and metrics reject it
+// as an unsupported operator. Every other function is implemented for all signals.
+export function isSupportedFunction(
+	functionName: string,
+	signal: SignalType,
+): boolean {
+	return functionName !== QUERY_BUILDER_FUNCTIONS.SEARCH || signal === 'logs';
+}
+
 export interface FieldContextPrefixMatch {
 	context: string;
 	remainder: string;

frontend/src/constants/antlrQueryConstants.ts

@@ -41,6 +41,7 @@ export const QUERY_BUILDER_FUNCTIONS = {
 	HASANY: 'hasAny',
 	HASALL: 'hasAll',
 	HASTOKEN: 'hasToken',
+	SEARCH: 'search',
 };
 
 export function negateOperator(operatorOrFunction: string): string {

frontend/src/lib/recentQueries/normalize.test.ts

@@ -34,7 +34,7 @@ describe('normalizeFilterExpression', () => {
 		);
 	});
 
-	it('lowercases HAS / HASANY / HASALL / HASTOKEN function names', () => {
+	it('lowercases HAS / HASANY / HASALL / HASTOKEN / SEARCH function names', () => {
 		expect(normalizeFilterExpression('HAS(tags, "x")')).toBe(
 			normalizeFilterExpression('has(tags, "x")'),
 		);
@@ -47,6 +47,9 @@ describe('normalizeFilterExpression', () => {
 		expect(normalizeFilterExpression('HASTOKEN(msg, "err")')).toBe(
 			normalizeFilterExpression('hasToken(msg, "err")'),
 		);
+		expect(normalizeFilterExpression('SEARCH("err")')).toBe(
+			normalizeFilterExpression('search("err")'),
+		);
 	});
 
 	it('lowercases TRUE / FALSE boolean literals', () => {

frontend/src/parser/FilterQuery.tokens

@@ -24,12 +24,13 @@ HASTOKEN=23
 HAS=24
 HASANY=25
 HASALL=26
-BOOL=27
-NUMBER=28
-QUOTED_TEXT=29
-KEY=30
-WS=31
-FREETEXT=32
+SEARCH=27
+BOOL=28
+NUMBER=29
+QUOTED_TEXT=30
+KEY=31
+WS=32
+FREETEXT=33
 '('=1
 ')'=2
 '['=3

frontend/src/parser/FilterQueryLexer.tokens

@@ -24,12 +24,13 @@ HASTOKEN=23
 HAS=24
 HASANY=25
 HASALL=26
-BOOL=27
-NUMBER=28
-QUOTED_TEXT=29
-KEY=30
-WS=31
-FREETEXT=32
+SEARCH=27
+BOOL=28
+NUMBER=29
+QUOTED_TEXT=30
+KEY=31
+WS=32
+FREETEXT=33
 '('=1
 ')'=2
 '['=3

frontend/src/parser/FilterQueryLexer.ts

@@ -1,4 +1,4 @@
-// Generated from FilterQuery.g4 by ANTLR 4.13.1
+// Generated from FilterQuery.g4 by ANTLR 4.13.2
 // noinspection ES6UnusedImports,JSUnusedGlobalSymbols,JSUnusedLocalSymbols
 import {
 	ATN,
@@ -38,12 +38,13 @@ export default class FilterQueryLexer extends Lexer {
 	public static readonly HAS = 24;
 	public static readonly HASANY = 25;
 	public static readonly HASALL = 26;
-	public static readonly BOOL = 27;
-	public static readonly NUMBER = 28;
-	public static readonly QUOTED_TEXT = 29;
-	public static readonly KEY = 30;
-	public static readonly WS = 31;
-	public static readonly FREETEXT = 32;
+	public static readonly SEARCH = 27;
+	public static readonly BOOL = 28;
+	public static readonly NUMBER = 29;
+	public static readonly QUOTED_TEXT = 30;
+	public static readonly KEY = 31;
+	public static readonly WS = 32;
+	public static readonly FREETEXT = 33;
 	public static readonly EOF = Token.EOF;
 
 	public static readonly channelNames: string[] = [ "DEFAULT_TOKEN_CHANNEL", "HIDDEN" ];
@@ -68,8 +69,9 @@ export default class FilterQueryLexer extends Lexer {
                                                              "AND", "OR", 
                                                              "HASTOKEN", 
                                                              "HAS", "HASANY", 
-                                                             "HASALL", "BOOL", 
-                                                             "NUMBER", "QUOTED_TEXT", 
+                                                             "HASALL", "SEARCH", 
+                                                             "BOOL", "NUMBER", 
+                                                             "QUOTED_TEXT", 
                                                              "KEY", "WS", 
                                                              "FREETEXT" ];
 	public static readonly modeNames: string[] = [ "DEFAULT_MODE", ];
@@ -78,8 +80,8 @@ export default class FilterQueryLexer extends Lexer {
 		"LPAREN", "RPAREN", "LBRACK", "RBRACK", "COMMA", "EQUALS", "NOT_EQUALS", 
 		"NEQ", "LT", "LE", "GT", "GE", "LIKE", "ILIKE", "BETWEEN", "EXISTS", "REGEXP", 
 		"CONTAINS", "IN", "NOT", "AND", "OR", "HASTOKEN", "HAS", "HASANY", "HASALL", 
-		"BOOL", "SIGN", "NUMBER", "QUOTED_TEXT", "SEGMENT", "EMPTY_BRACKS", "OLD_JSON_BRACKS", 
-		"KEY", "WS", "DIGIT", "FREETEXT",
+		"SEARCH", "BOOL", "SIGN", "NUMBER", "QUOTED_TEXT", "SEGMENT", "EMPTY_BRACKS", 
+		"OLD_JSON_BRACKS", "KEY", "WS", "DIGIT", "FREETEXT",
 	];
 
 
@@ -100,119 +102,122 @@ export default class FilterQueryLexer extends Lexer {
 
 	public get modeNames(): string[] { return FilterQueryLexer.modeNames; }
 
-	public static readonly _serializedATN: number[] = [4,0,32,320,6,-1,2,0,
+	public static readonly _serializedATN: number[] = [4,0,33,329,6,-1,2,0,
 	7,0,2,1,7,1,2,2,7,2,2,3,7,3,2,4,7,4,2,5,7,5,2,6,7,6,2,7,7,7,2,8,7,8,2,9,
 	7,9,2,10,7,10,2,11,7,11,2,12,7,12,2,13,7,13,2,14,7,14,2,15,7,15,2,16,7,
 	16,2,17,7,17,2,18,7,18,2,19,7,19,2,20,7,20,2,21,7,21,2,22,7,22,2,23,7,23,
 	2,24,7,24,2,25,7,25,2,26,7,26,2,27,7,27,2,28,7,28,2,29,7,29,2,30,7,30,2,
-	31,7,31,2,32,7,32,2,33,7,33,2,34,7,34,2,35,7,35,2,36,7,36,1,0,1,0,1,1,1,
-	1,1,2,1,2,1,3,1,3,1,4,1,4,1,5,1,5,1,5,3,5,89,8,5,1,6,1,6,1,6,1,7,1,7,1,
-	7,1,8,1,8,1,9,1,9,1,9,1,10,1,10,1,11,1,11,1,11,1,12,1,12,1,12,1,12,1,12,
-	1,13,1,13,1,13,1,13,1,13,1,13,1,14,1,14,1,14,1,14,1,14,1,14,1,14,1,14,1,
-	15,1,15,1,15,1,15,1,15,1,15,3,15,132,8,15,1,16,1,16,1,16,1,16,1,16,1,16,
-	1,16,1,17,1,17,1,17,1,17,1,17,1,17,1,17,1,17,3,17,149,8,17,1,18,1,18,1,
-	18,1,19,1,19,1,19,1,19,1,20,1,20,1,20,1,20,1,21,1,21,1,21,1,22,1,22,1,22,
-	1,22,1,22,1,22,1,22,1,22,1,22,1,23,1,23,1,23,1,23,1,24,1,24,1,24,1,24,1,
-	24,1,24,1,24,1,25,1,25,1,25,1,25,1,25,1,25,1,25,1,26,1,26,1,26,1,26,1,26,
-	1,26,1,26,1,26,1,26,3,26,201,8,26,1,27,1,27,1,28,3,28,206,8,28,1,28,4,28,
-	209,8,28,11,28,12,28,210,1,28,1,28,5,28,215,8,28,10,28,12,28,218,9,28,3,
-	28,220,8,28,1,28,1,28,3,28,224,8,28,1,28,4,28,227,8,28,11,28,12,28,228,
-	3,28,231,8,28,1,28,3,28,234,8,28,1,28,1,28,4,28,238,8,28,11,28,12,28,239,
-	1,28,1,28,3,28,244,8,28,1,28,4,28,247,8,28,11,28,12,28,248,3,28,251,8,28,
-	3,28,253,8,28,1,29,1,29,1,29,1,29,5,29,259,8,29,10,29,12,29,262,9,29,1,
-	29,1,29,1,29,1,29,1,29,5,29,269,8,29,10,29,12,29,272,9,29,1,29,3,29,275,
-	8,29,1,30,1,30,5,30,279,8,30,10,30,12,30,282,9,30,1,31,1,31,1,31,1,32,1,
-	32,1,32,1,32,1,33,1,33,1,33,1,33,1,33,1,33,1,33,4,33,298,8,33,11,33,12,
-	33,299,5,33,302,8,33,10,33,12,33,305,9,33,1,34,4,34,308,8,34,11,34,12,34,
-	309,1,34,1,34,1,35,1,35,1,36,4,36,317,8,36,11,36,12,36,318,0,0,37,1,1,3,
-	2,5,3,7,4,9,5,11,6,13,7,15,8,17,9,19,10,21,11,23,12,25,13,27,14,29,15,31,
-	16,33,17,35,18,37,19,39,20,41,21,43,22,45,23,47,24,49,25,51,26,53,27,55,
-	0,57,28,59,29,61,0,63,0,65,0,67,30,69,31,71,0,73,32,1,0,29,2,0,76,76,108,
-	108,2,0,73,73,105,105,2,0,75,75,107,107,2,0,69,69,101,101,2,0,66,66,98,
-	98,2,0,84,84,116,116,2,0,87,87,119,119,2,0,78,78,110,110,2,0,88,88,120,
-	120,2,0,83,83,115,115,2,0,82,82,114,114,2,0,71,71,103,103,2,0,80,80,112,
-	112,2,0,67,67,99,99,2,0,79,79,111,111,2,0,65,65,97,97,2,0,68,68,100,100,
-	2,0,72,72,104,104,2,0,89,89,121,121,2,0,85,85,117,117,2,0,70,70,102,102,
-	2,0,43,43,45,45,2,0,34,34,92,92,2,0,39,39,92,92,4,0,35,36,64,90,95,95,97,
-	123,7,0,35,36,45,45,47,58,64,90,95,95,97,123,125,125,3,0,9,10,13,13,32,
-	32,1,0,48,57,8,0,9,10,13,13,32,34,39,41,44,44,60,62,91,91,93,93,344,0,1,
-	1,0,0,0,0,3,1,0,0,0,0,5,1,0,0,0,0,7,1,0,0,0,0,9,1,0,0,0,0,11,1,0,0,0,0,
-	13,1,0,0,0,0,15,1,0,0,0,0,17,1,0,0,0,0,19,1,0,0,0,0,21,1,0,0,0,0,23,1,0,
-	0,0,0,25,1,0,0,0,0,27,1,0,0,0,0,29,1,0,0,0,0,31,1,0,0,0,0,33,1,0,0,0,0,
-	35,1,0,0,0,0,37,1,0,0,0,0,39,1,0,0,0,0,41,1,0,0,0,0,43,1,0,0,0,0,45,1,0,
-	0,0,0,47,1,0,0,0,0,49,1,0,0,0,0,51,1,0,0,0,0,53,1,0,0,0,0,57,1,0,0,0,0,
-	59,1,0,0,0,0,67,1,0,0,0,0,69,1,0,0,0,0,73,1,0,0,0,1,75,1,0,0,0,3,77,1,0,
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-	15,93,1,0,0,0,17,96,1,0,0,0,19,98,1,0,0,0,21,101,1,0,0,0,23,103,1,0,0,0,
-	25,106,1,0,0,0,27,111,1,0,0,0,29,117,1,0,0,0,31,125,1,0,0,0,33,133,1,0,
-	0,0,35,140,1,0,0,0,37,150,1,0,0,0,39,153,1,0,0,0,41,157,1,0,0,0,43,161,
-	1,0,0,0,45,164,1,0,0,0,47,173,1,0,0,0,49,177,1,0,0,0,51,184,1,0,0,0,53,
-	200,1,0,0,0,55,202,1,0,0,0,57,252,1,0,0,0,59,274,1,0,0,0,61,276,1,0,0,0,
-	63,283,1,0,0,0,65,286,1,0,0,0,67,290,1,0,0,0,69,307,1,0,0,0,71,313,1,0,
-	0,0,73,316,1,0,0,0,75,76,5,40,0,0,76,2,1,0,0,0,77,78,5,41,0,0,78,4,1,0,
-	0,0,79,80,5,91,0,0,80,6,1,0,0,0,81,82,5,93,0,0,82,8,1,0,0,0,83,84,5,44,
-	0,0,84,10,1,0,0,0,85,89,5,61,0,0,86,87,5,61,0,0,87,89,5,61,0,0,88,85,1,
-	0,0,0,88,86,1,0,0,0,89,12,1,0,0,0,90,91,5,33,0,0,91,92,5,61,0,0,92,14,1,
-	0,0,0,93,94,5,60,0,0,94,95,5,62,0,0,95,16,1,0,0,0,96,97,5,60,0,0,97,18,
-	1,0,0,0,98,99,5,60,0,0,99,100,5,61,0,0,100,20,1,0,0,0,101,102,5,62,0,0,
-	102,22,1,0,0,0,103,104,5,62,0,0,104,105,5,61,0,0,105,24,1,0,0,0,106,107,
-	7,0,0,0,107,108,7,1,0,0,108,109,7,2,0,0,109,110,7,3,0,0,110,26,1,0,0,0,
-	111,112,7,1,0,0,112,113,7,0,0,0,113,114,7,1,0,0,114,115,7,2,0,0,115,116,
-	7,3,0,0,116,28,1,0,0,0,117,118,7,4,0,0,118,119,7,3,0,0,119,120,7,5,0,0,
-	120,121,7,6,0,0,121,122,7,3,0,0,122,123,7,3,0,0,123,124,7,7,0,0,124,30,
-	1,0,0,0,125,126,7,3,0,0,126,127,7,8,0,0,127,128,7,1,0,0,128,129,7,9,0,0,
-	129,131,7,5,0,0,130,132,7,9,0,0,131,130,1,0,0,0,131,132,1,0,0,0,132,32,
-	1,0,0,0,133,134,7,10,0,0,134,135,7,3,0,0,135,136,7,11,0,0,136,137,7,3,0,
-	0,137,138,7,8,0,0,138,139,7,12,0,0,139,34,1,0,0,0,140,141,7,13,0,0,141,
-	142,7,14,0,0,142,143,7,7,0,0,143,144,7,5,0,0,144,145,7,15,0,0,145,146,7,
-	1,0,0,146,148,7,7,0,0,147,149,7,9,0,0,148,147,1,0,0,0,148,149,1,0,0,0,149,
-	36,1,0,0,0,150,151,7,1,0,0,151,152,7,7,0,0,152,38,1,0,0,0,153,154,7,7,0,
-	0,154,155,7,14,0,0,155,156,7,5,0,0,156,40,1,0,0,0,157,158,7,15,0,0,158,
-	159,7,7,0,0,159,160,7,16,0,0,160,42,1,0,0,0,161,162,7,14,0,0,162,163,7,
-	10,0,0,163,44,1,0,0,0,164,165,7,17,0,0,165,166,7,15,0,0,166,167,7,9,0,0,
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-	1,0,0,0,230,231,1,0,0,0,231,253,1,0,0,0,232,234,3,55,27,0,233,232,1,0,0,
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+	1,0,0,0,320,321,6,35,0,0,321,72,1,0,0,0,322,323,7,27,0,0,323,74,1,0,0,0,
+	324,326,8,28,0,0,325,324,1,0,0,0,326,327,1,0,0,0,327,325,1,0,0,0,327,328,
+	1,0,0,0,328,76,1,0,0,0,29,0,90,133,150,209,214,219,225,228,232,237,239,
+	242,248,252,257,259,261,267,269,277,279,283,289,308,310,312,318,327,1,6,
+	0,0];
 
 	private static __ATN: ATN;
 	public static get _ATN(): ATN {

frontend/src/parser/FilterQueryListener.ts

@@ -1,25 +1,26 @@
-// Generated from FilterQuery.g4 by ANTLR 4.13.1
+// Generated from FilterQuery.g4 by ANTLR 4.13.2
 
 import {ParseTreeListener} from "antlr4";
 
 
-import { QueryContext } from "./FilterQueryParser";
-import { ExpressionContext } from "./FilterQueryParser";
-import { OrExpressionContext } from "./FilterQueryParser";
-import { AndExpressionContext } from "./FilterQueryParser";
-import { UnaryExpressionContext } from "./FilterQueryParser";
-import { PrimaryContext } from "./FilterQueryParser";
-import { ComparisonContext } from "./FilterQueryParser";
-import { InClauseContext } from "./FilterQueryParser";
-import { NotInClauseContext } from "./FilterQueryParser";
-import { ValueListContext } from "./FilterQueryParser";
-import { FullTextContext } from "./FilterQueryParser";
-import { FunctionCallContext } from "./FilterQueryParser";
-import { FunctionParamListContext } from "./FilterQueryParser";
-import { FunctionParamContext } from "./FilterQueryParser";
-import { ArrayContext } from "./FilterQueryParser";
-import { ValueContext } from "./FilterQueryParser";
-import { KeyContext } from "./FilterQueryParser";
+import { QueryContext } from "./FilterQueryParser.js";
+import { ExpressionContext } from "./FilterQueryParser.js";
+import { OrExpressionContext } from "./FilterQueryParser.js";
+import { AndExpressionContext } from "./FilterQueryParser.js";
+import { UnaryExpressionContext } from "./FilterQueryParser.js";
+import { PrimaryContext } from "./FilterQueryParser.js";
+import { ComparisonContext } from "./FilterQueryParser.js";
+import { InClauseContext } from "./FilterQueryParser.js";
+import { NotInClauseContext } from "./FilterQueryParser.js";
+import { ValueListContext } from "./FilterQueryParser.js";
+import { FullTextContext } from "./FilterQueryParser.js";
+import { FunctionCallContext } from "./FilterQueryParser.js";
+import { SearchCallContext } from "./FilterQueryParser.js";
+import { FunctionParamListContext } from "./FilterQueryParser.js";
+import { FunctionParamContext } from "./FilterQueryParser.js";
+import { ArrayContext } from "./FilterQueryParser.js";
+import { ValueContext } from "./FilterQueryParser.js";
+import { KeyContext } from "./FilterQueryParser.js";
 
 
 /**
@@ -147,6 +148,16 @@ export default class FilterQueryListener extends ParseTreeListener {
 	 * @param ctx the parse tree
 	 */
 	exitFunctionCall?: (ctx: FunctionCallContext) => void;
+	/**
+	 * Enter a parse tree produced by `FilterQueryParser.searchCall`.
+	 * @param ctx the parse tree
+	 */
+	enterSearchCall?: (ctx: SearchCallContext) => void;
+	/**
+	 * Exit a parse tree produced by `FilterQueryParser.searchCall`.
+	 * @param ctx the parse tree
+	 */
+	exitSearchCall?: (ctx: SearchCallContext) => void;
 	/**
 	 * Enter a parse tree produced by `FilterQueryParser.functionParamList`.
 	 * @param ctx the parse tree

frontend/src/parser/FilterQueryVisitor.ts

@@ -1,25 +1,26 @@
-// Generated from FilterQuery.g4 by ANTLR 4.13.1
+// Generated from FilterQuery.g4 by ANTLR 4.13.2
 
 import {ParseTreeVisitor} from 'antlr4';
 
 
-import { QueryContext } from "./FilterQueryParser";
-import { ExpressionContext } from "./FilterQueryParser";
-import { OrExpressionContext } from "./FilterQueryParser";
-import { AndExpressionContext } from "./FilterQueryParser";
-import { UnaryExpressionContext } from "./FilterQueryParser";
-import { PrimaryContext } from "./FilterQueryParser";
-import { ComparisonContext } from "./FilterQueryParser";
-import { InClauseContext } from "./FilterQueryParser";
-import { NotInClauseContext } from "./FilterQueryParser";
-import { ValueListContext } from "./FilterQueryParser";
-import { FullTextContext } from "./FilterQueryParser";
-import { FunctionCallContext } from "./FilterQueryParser";
-import { FunctionParamListContext } from "./FilterQueryParser";
-import { FunctionParamContext } from "./FilterQueryParser";
-import { ArrayContext } from "./FilterQueryParser";
-import { ValueContext } from "./FilterQueryParser";
-import { KeyContext } from "./FilterQueryParser";
+import { QueryContext } from "./FilterQueryParser.js";
+import { ExpressionContext } from "./FilterQueryParser.js";
+import { OrExpressionContext } from "./FilterQueryParser.js";
+import { AndExpressionContext } from "./FilterQueryParser.js";
+import { UnaryExpressionContext } from "./FilterQueryParser.js";
+import { PrimaryContext } from "./FilterQueryParser.js";
+import { ComparisonContext } from "./FilterQueryParser.js";
+import { InClauseContext } from "./FilterQueryParser.js";
+import { NotInClauseContext } from "./FilterQueryParser.js";
+import { ValueListContext } from "./FilterQueryParser.js";
+import { FullTextContext } from "./FilterQueryParser.js";
+import { FunctionCallContext } from "./FilterQueryParser.js";
+import { SearchCallContext } from "./FilterQueryParser.js";
+import { FunctionParamListContext } from "./FilterQueryParser.js";
+import { FunctionParamContext } from "./FilterQueryParser.js";
+import { ArrayContext } from "./FilterQueryParser.js";
+import { ValueContext } from "./FilterQueryParser.js";
+import { KeyContext } from "./FilterQueryParser.js";
 
 
 /**
@@ -102,6 +103,12 @@ export default class FilterQueryVisitor<Result> extends ParseTreeVisitor<Result>
 	 * @return the visitor result
 	 */
 	visitFunctionCall?: (ctx: FunctionCallContext) => Result;
+	/**
+	 * Visit a parse tree produced by `FilterQueryParser.searchCall`.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	visitSearchCall?: (ctx: SearchCallContext) => Result;
 	/**
 	 * Visit a parse tree produced by `FilterQueryParser.functionParamList`.
 	 * @param ctx the parse tree

frontend/src/utils/__tests__/queryContextUtils.test.ts

@@ -380,6 +380,19 @@ describe('extractQueryPairs', () => {
 		consoleSpy.mockRestore();
 	});
 
+	it('does not turn a search() term into a pair', () => {
+		// The bare form lexes as a KEY; left in it becomes a phantom filter item.
+		expect(extractQueryPairs("search('err')")).toStrictEqual([]);
+		expect(extractQueryPairs('search(err)')).toStrictEqual([]);
+		expect(extractQueryPairs('search(')).toStrictEqual([]);
+
+		expect(
+			extractQueryPairs("search(err) AND service.name = 'api'").map(
+				(pair) => pair.key,
+			),
+		).toStrictEqual(['service.name']);
+	});
+
 	it('should treat lowercase exists as non-value operator', () => {
 		const input = 'body exists service.name contains "test"';
 		const result = extractQueryPairs(input);
@@ -821,3 +834,53 @@ describe('getQueryContextAtCursor - partial operator', () => {
 		expect(ctx.operatorToken).toBe('k');
 	});
 });
+
+describe('getQueryContextAtCursor - function context', () => {
+	// Each function keyword gets its own lexer token, and every one has to be
+	// registered as a function token for the editor to offer the function list.
+	it.each(['has', 'hasAny', 'hasAll', 'hasToken', 'search'])(
+		'resolves %s to function context',
+		(functionName) => {
+			const ctx = getQueryContextAtCursor(functionName, functionName.length);
+
+			expect(ctx.isInFunction).toBe(true);
+			expect(ctx.isInKey).toBe(false);
+		},
+	);
+});
+
+describe('getQueryContextAtCursor - search term', () => {
+	// The term is free text. The bare form lexes as a key and the position right
+	// after the paren reads as a group, so without suppression the editor offers
+	// attribute keys and completes one into the term.
+	it.each([
+		['search(', 7],
+		['search(e', 8],
+		['search(err)', 8],
+		["search('", 8],
+		["search('er", 10],
+	])('offers nothing inside %s at %i', (query, cursor) => {
+		const ctx = getQueryContextAtCursor(query, cursor);
+
+		expect(ctx.isInKey).toBe(false);
+		expect(ctx.isInValue).toBe(false);
+		expect(ctx.isInParenthesis).toBe(false);
+	});
+
+	it('still offers keys inside has(), which does take one', () => {
+		const ctx = getQueryContextAtCursor('has(tags', 8);
+
+		expect(ctx.isInKey).toBe(true);
+		expect(ctx.keyToken).toBe('tags');
+	});
+
+	it('leaves the filters around a search() alone', () => {
+		const ctx = getQueryContextAtCursor(
+			"search('err') AND service.name = 'api'",
+			25,
+		);
+
+		expect(ctx.isInKey).toBe(true);
+		expect(ctx.keyToken).toBe('service.name');
+	});
+});

frontend/src/utils/queryContextUtils.ts

@@ -507,7 +507,7 @@ function determineContextBoundaries(
  * @returns The query context at the cursor position
  */
 // eslint-disable-next-line sonarjs/cognitive-complexity
-export function getQueryContextAtCursor(
+function resolveQueryContextAtCursor(
 	query: string,
 	cursorIndex: number,
 ): IQueryContext {
@@ -1279,6 +1279,93 @@ export function getQueryContextAtCursor(
 	}
 }
 
+// Returns the token index just past the parenthesised argument list at
+// argumentStart, or argumentStart when none follows (a call the user is still
+// typing). An unclosed list consumes the remainder.
+function indexPastArguments(tokens: IToken[], argumentStart: number): number {
+	let index = argumentStart;
+	while (index < tokens.length && tokens[index].channel !== 0) {
+		index += 1;
+	}
+	if (index >= tokens.length || tokens[index].type !== FilterQueryLexer.LPAREN) {
+		return argumentStart;
+	}
+
+	let depth = 0;
+	for (; index < tokens.length; index++) {
+		if (tokens[index].type === FilterQueryLexer.LPAREN) {
+			depth += 1;
+		} else if (tokens[index].type === FilterQueryLexer.RPAREN) {
+			depth -= 1;
+			if (depth === 0) {
+				return index + 1;
+			}
+		}
+	}
+
+	return index;
+}
+
+// True when the cursor sits inside a search(...) argument list.
+function isCursorInSearchTerm(query: string, cursorIndex: number): boolean {
+	if (!query) {
+		return false;
+	}
+
+	const lexer = new FilterQueryLexer(CharStreams.fromString(query));
+	lexer.removeErrorListeners();
+	const tokenStream = new CommonTokenStream(lexer);
+	tokenStream.fill();
+	const tokens = tokenStream.tokens as IToken[];
+
+	return tokens.some((token, index) => {
+		if (token.type !== FilterQueryLexer.SEARCH) {
+			return false;
+		}
+
+		const open = tokens[index + 1];
+		if (open?.type !== FilterQueryLexer.LPAREN) {
+			return false;
+		}
+
+		const close = tokens[indexPastArguments(tokens, index + 1) - 1];
+		const closeStart =
+			close?.type === FilterQueryLexer.RPAREN ? close.start : query.length;
+
+		return cursorIndex > open.stop && cursorIndex <= closeStart;
+	});
+}
+
+/**
+ * Determines the query context at the cursor position
+ *
+ * @param query The query string
+ * @param cursorIndex The position of the cursor in the query
+ * @returns The query context at the cursor position
+ */
+export function getQueryContextAtCursor(
+	query: string,
+	cursorIndex: number,
+): IQueryContext {
+	const context = resolveQueryContextAtCursor(query, cursorIndex);
+
+	if (!isCursorInSearchTerm(query, cursorIndex)) {
+		return context;
+	}
+
+	// A search() term is free text: there is no key to suggest, and no key to
+	// fetch values for. The bare form search(x) lexes as a key, and the position
+	// right after the paren reads as a group, so both have to be cleared.
+	return {
+		...context,
+		isInKey: false,
+		isInValue: false,
+		isInParenthesis: false,
+		keyToken: undefined,
+		valueToken: undefined,
+	};
+}
+
 /**
  * Extracts all key-operator-value triplets from a query string
  * This is useful for getting value suggestions based on the current key and operator
@@ -1324,6 +1411,14 @@ export function extractQueryPairs(query: string): IQueryPair[] {
 				continue;
 			}
 
+			// A search() term is free text, not a key: the bare form search(x) lexes
+			// as one, and left in it surfaces as a phantom filter item -- the log
+			// detail drawer rebuilds its filters from these pairs.
+			if (token.type === FilterQueryLexer.SEARCH) {
+				iterator = indexPastArguments(allTokens, iterator);
+				continue;
+			}
+
 			// If token is a KEY, start a new pair
 			if (
 				token.type === FilterQueryLexer.KEY &&

frontend/src/utils/tokenUtils.ts

@@ -77,6 +77,7 @@ export function isFunctionToken(tokenType: number): boolean {
 		FilterQueryLexer.HASANY,
 		FilterQueryLexer.HASALL,
 		FilterQueryLexer.HASTOKEN,
+		FilterQueryLexer.SEARCH,
 	].includes(tokenType);
 }
 

scripts/grammar/generate-frontend-parser.sh

@@ -6,6 +6,6 @@ echo "Generating TypeScript parser..."
 mkdir -p frontend/src/parser
 
 # Generate TypeScript parser
-antlr4 -Dlanguage=TypeScript -o frontend/src/parser grammar/FilterQuery.g4 -visitor
+(cd grammar && antlr4 -Dlanguage=TypeScript -o ../frontend/src/parser FilterQuery.g4 -visitor)
 
 echo "TypeScript parser generation complete"