# Async Migration Progress Tracker

**Last Updated:** 2025-11-09
**Branch:** `claude/start-async-migration-011CUxKeJP4VHyyMJ41qW2eD`

---

## Overall Progress

| Metric | Current | Target | Progress |
|--------|---------|--------|----------|
| Generators Converted | 0 | 150 | 0% |
| Infrastructure PRs Complete | 1 | 3 | 33% |
| Test Pass Rate | 100% | 100% | ✅ |
| Code Coverage | Baseline | ≥85% | TBD |
| Phases Complete | 0 | 5 | In Progress |

---

## Phase Status

### Phase 1: Infrastructure Foundation 🔨
**Target:** 3 PRs | **Completed:** 1 PRs | **Status:** In Progress

- [x] PR #1: Async Infrastructure (`reactor/asynchronous.py`) - COMPLETE
- [ ] PR #2: Event Loop (`reactor/loop.py`)
- [ ] PR #3: Test Utilities (`tests/helpers/async_utils.py`)

**Generators to Convert:** 1
**Estimated Time:** 5-7 hours
**Blocking:** All other phases

**PR #1 Details:**
- Added async/await support to ASYNC class
- Maintains full backward compatibility with generators
- All 1376 unit tests pass
- 10 new async infrastructure tests added

---

### Phase 2: Critical Path ⏸️
**Target:** 5 PRs | **Completed:** 0 PRs | **Status:** Blocked by Phase 1

- [ ] PR #4: API Handlers Part 1 (10 generators)
- [ ] PR #5: API Handlers Part 2 (10 generators)
- [ ] PR #6: API Handlers Part 3 (10 generators)
- [ ] PR #7: Protocol Handler (14 generators)
- [ ] PR #8: Peer State Machine (9 generators)

**Generators to Convert:** 53
**Estimated Time:** 12-15 hours
**Blocking:** Phases 3, 4, 5

---

### Phase 3: Supporting Systems ⏸️
**Target:** 10 PRs | **Completed:** 0 PRs | **Status:** Blocked by Phase 2

- [ ] PR #9: Connection Handler
- [ ] PR #10: RIB Outgoing
- [ ] PR #11: API RIB Commands
- [ ] PR #12: API Neighbor Commands
- [ ] PR #13: API Watchdog Commands
- [ ] PR #14: Keepalive Handler
- [ ] PR #15: TCP Network Handlers
- [ ] PR #16: Outgoing Connections
- [ ] PR #17: Incoming Connections
- [ ] PR #18: Listener

**Generators to Convert:** 32
**Estimated Time:** 10-12 hours

---

### Phase 4: BGP Message Parsing ⏸️
**Target:** 5 PRs | **Completed:** 0 PRs | **Status:** Blocked by Phase 2

- [ ] PR #19: UPDATE Message Parser
- [ ] PR #20: Attributes Parser
- [ ] PR #21: MP_REACH_NLRI Parser
- [ ] PR #22: MP_UNREACH_NLRI Parser
- [ ] PR #23: AIGP Parser

**Generators to Convert:** 16
**Estimated Time:** 5-7 hours

---

### Phase 5: Configuration & Utilities (Optional) ⏸️
**Target:** 5 PRs | **Completed:** 0 PRs | **Status:** Optional

- [ ] PR #24: Flow Parser
- [ ] PR #25: Tokenizer
- [ ] PR #26: CLI Completer
- [ ] PR #27: Netlink Parsers
- [ ] PR #28: Remaining Utilities

**Generators to Convert:** ~48
**Estimated Time:** 8-10 hours

---

## PR Details

### ✅ Completed PRs
None yet

---

### 🚧 In Progress PRs
None yet

---

### 📋 Planned PRs

#### PR #1: Async Infrastructure
- **File:** `src/exabgp/reactor/asynchronous.py`
- **Status:** Not Started
- **Generators:** 0 (infrastructure)
- **Branch:** `async-pr-01-infrastructure`
- **Assignee:** TBD
- **Started:** -
- **Merged:** -
- **Notes:** Foundation for all other PRs

---

## Session Log

### Session 1: 2025-11-08
**Duration:** Planning
**Completed:**
- Created migration plan
- Created quick start guide
- Created progress tracker
- Analyzed codebase (44 files, 150 generators)

**Next Session:**
- Run baseline tests
- Start PR #1 (Async Infrastructure)

### Session 2: 2025-11-09
**Duration:** Implementation
**Completed:**
- ✅ PR #1: Async Infrastructure implementation
- Added async/await support to ASYNC class
- Created synchronous wrapper for backward compatibility
- Implemented _run_async() for dual generator/coroutine handling
- Created 10 comprehensive unit tests
- Verified backward compatibility (1376 unit tests pass)
- Committed changes to branch

**Test Results:**
- Unit tests: 1376/1376 passed (100%)
- New async tests: 10/10 passed (100%)
- Backward compatibility: ✅ Confirmed

**Next Session:**
- Push changes to remote
- Consider PR #2: Event Loop updates (if needed)
- Begin planning Phase 2 conversions

---

## Blockers & Issues

### Current Blockers
None

### Resolved Issues
None yet

---

## Test Results

### Baseline (Pre-Migration)
```
Date: TBD
Command: PYTHONPATH=src python -m pytest tests/ -v --cov=src/exabgp
Results: TBD
```

### Latest Test Run
```
Date: TBD
PRs Included: None
Results: TBD
```

---

## Performance Metrics

### Baseline
TBD - Run before starting PR #1

### Current
TBD

---

## Files Modified

### Production Code
- [ ] `src/exabgp/reactor/asynchronous.py` (PR #1)
- [ ] `src/exabgp/reactor/loop.py` (PR #2)
- [ ] (... more to come)

### Test Code
- [ ] `tests/helpers/async_utils.py` (PR #3 - new file)
- [ ] `tests/unit/test_async_infrastructure.py` (PR #1 - new file)

### Documentation
- [x] `ASYNC_MIGRATION_PLAN.md` (created)
- [x] `MIGRATION_QUICK_START.md` (created)
- [x] `MIGRATION_PROGRESS.md` (this file)
- [ ] Updated README.md (future)

---

## Critical Reminders

### DO NOT MODIFY - Stable Test Files
These files use generators but must remain unchanged to validate our work:
- ❌ `tests/unit/test_connection_advanced.py` (22 generators)
- ❌ `tests/fuzz/test_connection_reader.py` (2 generators)
- ❌ `tests/unit/test_route_refresh.py` (1 generator)

### Must Complete in Order
1. PR #1 → PR #2 → PR #3 (Infrastructure)
2. Then PR #4 → PR #5 → PR #6 (API Handlers)
3. Then PR #7 and PR #8 (Protocol & Peer)
4. Then Phase 3 and 4 can be parallelized

---

## Next Steps

### Immediate (This Session)
1. [ ] Run baseline tests
2. [ ] Create PR #1 branch
3. [ ] Start implementing PR #1

### Short Term (Next 1-2 Sessions)
1. [ ] Complete PR #1
2. [ ] Review and merge PR #1
3. [ ] Start PR #2

### Medium Term (Next 5-10 Sessions)
1. [ ] Complete Phase 1 (Infrastructure)
2. [ ] Complete Phase 2 (Critical Path)
3. [ ] Begin Phase 3 or 4

### Long Term (All Sessions)
1. [ ] Complete all required phases
2. [ ] Evaluate Phase 5 (optional)
3. [ ] Final validation and documentation

---

## Session Handoff Template

Use this when pausing work:

```markdown
## HANDOFF: [Date] Session [N] → Session [N+1]

### What Was Completed
- Item 1
- Item 2

### Current State
- PR in progress: #X (50% complete)
- Last commit: [hash]
- Branch: [name]

### Next Actions
1. Action 1
2. Action 2

### Blockers
- Issue 1 (if any)

### Notes
- Important context
```

---

## Questions & Decisions

### Open Questions
None yet

### Resolved Decisions
- **2025-11-08:** Decided to split announce.py into 3 PRs (4, 5, 6) instead of 1 large PR
- **2025-11-08:** Phase 5 marked as optional - can defer/skip if not needed

---

## Resources

- **Main Plan:** `ASYNC_MIGRATION_PLAN.md`
- **Quick Start:** `MIGRATION_QUICK_START.md`
- **Analysis Docs:** `/tmp/generator_analysis.md`, `/tmp/files_summary.txt`
- **Python Asyncio Docs:** https://docs.python.org/3/library/asyncio.html

---

**Last Action:** Migration plan created, ready to begin PR #1
**Next Action:** Run baseline tests and start PR #1 implementation
