feat(search): remove DuckDB, migrate to Bleve with pure Go search #17
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Create new epic f661c068 to replace DuckDB with native Go search implementation inspired by zk-org/zk architecture. Prime Concepts: - Filesystem abstraction via spf13/afero for mockable FS access - Complete DuckDB removal (no C++ dependencies) - Expressive search DSL (comparable to current SQL capabilities) - Zero user-facing functional regression (views/templates unchanged) Research Task: - research-dbb5cdc8: Analyze zk-org/zk search implementation - Use CodeMapper and LSP tools to map code paths - Create ASCII state machine diagrams for query, indexing, and execution flows - Document integration opportunities with afero Updates: - summary.md: Added new epic to active work section - todo.md: Added research checklist for zk analysis - team.md: Updated with dual epic assignments Related: epic-1f41631e (pi-opennotes extension) Refs: #DuckDBRemoval #AferoIntegration
- Create research-45af3ec0-golang-vector-rag-search.md - Explore Go-based vector databases and RAG patterns - Inspired by qmd (Node.js tool we can't use) - Link to epic-f661c068 (Remove DuckDB) - Update summary.md, todo.md, team.md with new research - Research will inform whether vector search should complement text search Related-To: epic-f661c068, research-dbb5cdc8
Phase 2 of DuckDB removal epic. Defines the interface contracts for the new search system without depending on any specific backend. New interfaces: - Index: Core search index operations (Add, Remove, Find, Reindex) - Parser: Query string parsing to AST - Storage: Filesystem abstraction (afero-compatible) New types: - Document: Indexed note representation - Query/Expr: AST for Gmail-style query DSL - FindOpts: Functional options pattern for query building - Results/Result/Snippet: Search result types Design principles: - Small, focused interfaces (single responsibility) - Functional options (immutable, chainable) - Context support for cancellation - Pure Go, no CGO dependencies Inspired by zk-org/zk interface patterns, adapted for OpenNotes. Epic: f661c068 Phase: ed57f7e9
Phase 3 of DuckDB removal epic. Implements the search.Parser interface using alecthomas/participle for type-safe grammar definition. Supported syntax: - Simple terms: meeting, "exact phrase" - Field qualifiers: tag:work, title:meeting, path:projects/ - Date filters: created:>2024-01-01, modified:<2024-06-30 - Negation: -archived, -tag:done - Implicit AND: tag:work status:todo New files: - parser/doc.go - Package documentation - parser/grammar.go - Participle grammar definition - parser/convert.go - AST conversion to search.Expr - parser/parser.go - Parser implementation with Help() - parser/parser_test.go - Comprehensive test suite All tests pass (10 test cases covering all syntax variants). Epic: f661c068 Phase: f29cef1b
- Add research synthesis for search replacement (research-f410e3ba) - Add parallel research subtopics (zk-search, vector-rag, query-dsl, performance) - Add phase-ed57f7e9: Interface Design (complete) - Add phase-f29cef1b: Query Parser (complete) - Update epic to reflect completed phases 1-3 - Update summary and todo for phase 4 readiness
Phase 4 of DuckDB removal - implement search.Index interface using Bleve. New package internal/search/bleve/ with: - doc.go: Package documentation - mapping.go: Document mapping with BM25 field weights - path: 1000 (strongest signal) - title: 500 (strong) - tags: 300 (medium) - lead: 50 (first paragraph) - body: 1 (baseline) - storage.go: AferoStorage adapter for search.Storage interface - query.go: Query AST to Bleve query translation - TranslateQuery: converts search.Query to Bleve queries - TranslateFindOpts: handles tags, paths, date ranges - index.go: Full Index interface implementation - Add/Remove/Find/FindByPath/Count/Stats/Close/Reindex - In-memory and persistent index support - Thread-safe with RWMutex Tests: 22 new tests (8 index integration, 14 query translation) Dependencies: github.com/blevesearch/bleve/v2, github.com/spf13/afero
- Implement full search.Index interface using Bleve - Add FindByQueryString method for direct query string support - Create comprehensive test suite (36 tests total): * 8 integration tests for Index operations * 14 query translation unit tests * 6 parser integration tests * 6 performance benchmarks - Fix tag matching bug: TermQuery → MatchQuery for analyzed fields - Verify performance targets: * Search: 0.754ms (97% under 25ms target) * FindByPath: 9μs (ultra-fast) * Count: 324μs (sub-millisecond) Files created: - internal/search/bleve/index_bench_test.go (6 benchmarks) - internal/search/bleve/parser_integration_test.go (6 tests) Phase 4 deliverables complete. Ready for Phase 5 (DuckDB removal). Refs: epic-f661c068, phase-3a5e0381
- Mark Phase 4 (Bleve Backend) as completed in all artifacts - Update epic, phase, todo, summary, team, and codemap - Add new search state machine diagram - Document performance achievements: * Search: 0.754ms (97% under target) * FindByPath: 9μs * Count: 324μs * 36 tests passing - Note DuckDB as legacy (to be removed in Phase 5) Refs: phase-3a5e0381
Key insights: - Bleve query types (TermQuery vs MatchQuery for analyzed fields) - Performance exceeded targets by 97% (0.754ms vs 25ms) - Test-driven development caught tag matching bug early - Parser integration trivial with clean interfaces - BM25 field weights are powerful and simple - Afero makes testing painless Includes anti-patterns avoided and recommended practices. Refs: phase-3a5e0381, learning-6ba0a703
Updated all memory artifacts to reflect Phase 4 completion: - Epic: Added completion summary with achievements - Summary: Updated session history and next steps - Team: Marked Phase 4 complete (21:35) - Todo: Cleared Phase 4 tasks, added Phase 5 proposal Phase 4 Statistics: - 9 files created - 36 tests passing (100%) - 0.754ms search performance (97% under target) - 6 benchmarks validating design - 1 critical bug fixed (tag matching) Ready for Phase 5: DuckDB Removal Refs: phase-3a5e0381, epic-f661c068
- Create phase-02df510c-duckdb-removal.md with 7 task categories - Update epic f661c068: phase 4 complete, phase 5 in progress - Update summary.md, todo.md, team.md to reflect phase 5 start - Ready to begin codebase audit for DuckDB removal Phase 5 goals: - Zero DuckDB references in codebase - Binary size <15MB (from 64MB) - Startup time <100ms (from 500ms) - All CLI commands using Bleve search Related: #epic-f661c068
- Completed comprehensive DuckDB reference scan - Identified 14 production files requiring changes - Documented 8 go.mod dependencies to remove - Analyzed NoteService DbService usage patterns - Established migration order (11 phases) Key findings: - DbService well-isolated in service layer - CLI commands use services, not DbService directly - 161 NewDbService() calls (mostly in tests) - NoteService uses read_markdown() for all queries - NotebookService only passes DbService to NoteService Files affected: - 3 service files (delete db.go, migrate note.go/notebook.go) - 3 service test files - 1 CLI root file - 6 CLI commands (verification needed) - 4 e2e test files Next: Task 2 - NoteService migration design Related: #phase-02df510c #epic-f661c068
- Created detailed NoteService migration task (task-3639018c) - Mapped all 5 DbService methods to new implementations - Analyzed QueryCondition → search.Query mapping - Designed Note ↔ Document conversion strategy - Documented testing strategy for 61 test updates Migration approach: - Replace dbService field with index search.Index - Use Index.Find() for getAllNotes() (match-all query) - Use Index.Count() for Count() - Refactor SearchService to build search.Query AST - REMOVE: ExecuteSQLSafe(), Query(), ValidateSQL() (clean break) Key decisions: 1. Use Index.Find() not filesystem walk 2. Refactor SearchService.BuildQuery() for query AST 3. Remove SQL interface entirely (Option A) Next: Begin implementation of Phase 2.1 Related: #phase-02df510c #epic-f661c068
- Add search.Index field to NoteService struct - Update constructor to accept Index parameter - Keep DbService temporarily with TODO markers - Update NotebookService to pass nil index (temporary) - Update all test files with nil index parameter - note_test.go: 61 instances updated - view_special_test.go: 6 instances updated - notebook.go: 2 instances updated Changes: - NoteService now has both dbService and index fields - Constructor signature: (cfg, db, index, path) - All tests pass (161 tests) Next steps: - Implement getAllNotes() using Index - Migrate other methods - Remove DbService dependency Related: #task-3639018c #phase-02df510c
- Marked Phase 2.1 complete in task-3639018c - Updated 69 callers (tests + production code) - All 161 tests passing - Commit: c9318b7 Next: Phase 2.2 - Migrate getAllNotes() to use Index.Find() Related: #task-3639018c #phase-02df510c
Session Summary (2026-02-01 Evening): - ✅ Phase 5 started (21:17) - ✅ Task 1: Codebase audit complete (b355c94) - ✅ Task 2: Migration plan created (bde8f4c) - ✅ Phase 2.1: NoteService struct updated (c9318b7) Accomplishments: - Identified 14 files requiring changes - Created detailed migration plan (7 sub-phases) - Added Index field to NoteService - Updated 69 callers (all tests passing) - Made 4 key architectural decisions Progress: 2 of 11 sub-phases complete (18%) Next Session: - Start Phase 2.2: Migrate getAllNotes() to Index.Find() - Create Document → Note conversion helper - Estimated: 30-45 minutes Session notes saved in session-notes-2026-02-01-evening.md Related: #phase-02df510c #epic-f661c068
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Summary
Complete removal of DuckDB dependency and migration to Bleve-based search engine with pure Go implementation. Implements Gmail-style query parser, full-text search indexing, and file-backed storage for production-ready note searching.
What's Changed
Search System Replacement
Key Components Added
internal/search/- Core search interfaces and typesinternal/search/parser/- Gmail-style query DSL parserinternal/search/bleve/- Bleve backend implementation with persistenceNoteServicewithIndex()method for search operationsCode Quality
Commits Included
Testing
Related Artifacts
Migration Impact