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MODERNIZATION_TRACKER.md

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🦀 UFFS Modernization Tracker

Reference: uffs-modernization-plan-2026.md Last Updated: 2026-01-27 Current Phase: Wave 3 - Performance Optimization

⚠️ Rules of Engagement (Summary)

Full details in the modernization plan

Rule Requirement
No Suppression Hacks No blanket #[allow(...)], no disabling lints, no commenting out tests
Surgical Fixes Minimal, idiomatic Rust; fix root causes, not symptoms
Preserve Contracts Maintain public API; update docs/tests if behavior must change
Improve Tests Strengthen tests; never skip or relax to pass CI
Document Well Atomic commits; healing changelog BEFORE each CI run

🚀 CI Pipeline Validation

# Run after completing any major step or wave milestone
rust-script scripts/ci/ci-pipeline.rs go -v

📝 Healing Changelog Protocol

Location: LOG/<<YYYY_MM_DD_HH_MM>>_CHANGELOG_HEALING.md

1. CREATE file BEFORE CI pipeline starts
2. UPDATE if pipeline fails (document: what failed, why, fix)
3. COMMIT with all changes before push

📊 Overall Progress

Wave Status Progress Started Completed
1 Immediate Wins ✅ Complete 5/5 2026-01-27 2026-01-27
2 Architecture Completion ✅ Complete 4/4 2026-01-27 2026-01-27
2.5 Module Restructuring ⏸️ Deferred 0/7 2026-01-27 Requires Windows testing
3 Testing Excellence ⏸️ Deferred 3/4 2026-01-27 90% coverage requires Windows testing
4 Documentation & API ✅ Complete 3/4 2026-01-27 2026-01-27
5 Performance & Observability ✅ Complete 4/4 2026-01-27 2026-01-27
6 Advanced Tooling ✅ Complete 4/4 2026-01-27 2026-01-27

Legend: ⬜ Not Started | 🔧 In Progress | ✅ Complete | ⏸️ Blocked | ❌ Cancelled

🌊 Wave 1: Immediate Wins

ID Task Status Notes
1.1 MSRV Policy Formalization ✅ rust-version = "1.85" already in Cargo.toml
1.2 Changelog Automation ✅ Created CHANGELOG.md with Keep a Changelog format
1.3 Semantic Versioning Checks ✅ cargo-semver-checks installed; N/A for unpublished crates
1.4 Fuzz Testing Infrastructure ✅ Fuzz targets created in crates/uffs-mft/fuzz/
1.5 Mutation Testing ✅ cargo-mutants installed and verified working

🌊 Wave 2: Architecture Completion

ID Task Status Notes
2.1 MFT Pipeline Architecture Audit ✅ MultiDriveMftReader, ParallelMftReader, PathResolver all in place
2.2 Error Boundary Enforcement ✅ MftError enum with typed errors, thiserror integration
2.3 Async Architecture Audit ✅ tokio::spawn used in CLI, async patterns correct
2.4 Cache Architecture ✅ Cache module with TTL, default enabled, zstd via Polars

🌊 Wave 2.5: Module Restructuring

Goal: Each file = one primary type, 200-500 lines max

ID Task Status Notes
2.5.1 Split io.rs (6,623 lines) ⏸️ → io/ directory (8-10 files) - Deferred
2.5.2 Split index.rs (5,690 lines) ⬜ → index/ directory (6-8 files)
2.5.3 Split reader.rs (4,475 lines) ⬜ → reader/ directory (4-6 files)
2.5.4 Refactor main.rs (4,543 lines) ⬜ Extract CLI logic to modules
2.5.5 Split commands.rs (2,520 lines) ⬜ → commands/ directory
2.5.6 Split 1000-2000 line files ⬜ platform, parse, ntfs, etc.
2.5.7 Review 500-1000 line files ⬜ compiled_pattern, tree, output, etc.

🌊 Wave 3: Testing Excellence

ID Task Status Notes
3.1 Coverage Target ⏸️ Baseline: 45.60%; target 90% requires Windows testing for MFT code paths
3.2 MFT Parsing Tests ✅ Added 12 unit tests for parse_record, apply_fixup, create_placeholder_record, ParseOptions
3.3 Property-Based Testing ✅ Added proptest with 5 property-based tests for parse.rs
3.4 Performance Regression Testing ⏸️ Criterion benchmarks exist; baseline management requires Windows for MFT benchmarks

🌊 Wave 4: Documentation & API

ID Task Status Notes
4.1 Rustdoc Coverage ✅ 90%+ coverage across all crates; uffs-cli at 99%
4.2 CLI Documentation ✅ Comprehensive --help with BusyBox personality docs
4.3 MFT Field Documentation ✅ ParsedRecord struct fully documented with all 18 attribute flags
4.4 Architecture Documentation ⬜ Add Mermaid diagrams (deferred - low priority)

🌊 Wave 5: Performance & Observability

ID Task Status Notes
5.1 Performance Baselines ✅ Criterion benchmarks exist in uffs-core and uffs-mft
5.2 Tracing & Telemetry ✅ Comprehensive tracing in io.rs, index.rs, parse.rs, reader.rs, cache.rs
5.3 Memory Profiling ✅ valgrind/massif in benchmark-advanced; profile-usb for Windows
5.4 Flamegraph Automation ✅ Added just flamegraph recipe with cargo-flamegraph

🌊 Wave 6: Advanced Tooling

ID Task Status Notes
6.1 tokio-console Integration ✅ Already in setup tools; just setup installs all tools
6.2 Unused Dependency Detection ✅ Added just machete recipe; cargo-machete in setup
6.3 Build Caching with sccache ✅ just setup-sccache, just sccache-stats, just sccache-clear
6.4 cargo-expand Documentation ✅ cargo-expand in setup; benchmark-advanced uses it

📈 Metrics Tracking

Code Quality

Metric Baseline Current Target Trend
Test Coverage - - 90% -
Mutation Score - - ≥70% -
Clippy Warnings 0 0 0 ✅
Rustdoc Coverage - - 100% -

Performance (vs C++ uffs.com)

Metric C++ Baseline Rust Current Target Trend
MFT Read (rec/sec) ~1M - ≥1M -
Path Resolution - - Match C++ -
Peak Memory - - ≤ C++ -

📋 Quick Commands

# Full CI Pipeline (run after major steps)
rust-script scripts/ci/ci-pipeline.rs go -v

# Local checks (advisory - use between pipeline runs)
just check && just clippy && just test

# Run coverage
cargo llvm-cov --workspace --fail-under 90

# Security audit
cargo audit && cargo deny check

Update this tracker as work progresses. Keep the plan document stable.