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fix: add package cache refresh before apply and on health check

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- New src/packages/cache.rs module with PackageCacheState, stale detection,
  state persistence, 404 retry logic
- Add refresh_package_cache() and last_cache_update() to PackageManagerBackend
  trait, implemented on all 5 backends (APT, DNF, YUM, APK, Pacman)
- Health check now reports last_cache_update and cache_status fields,
  triggers cache refresh if stale (>4h), returns degraded on failure
- Patch apply jobs now force cache refresh before applying patches,
  with 404/fetch error retry (1 retry after cache refresh)
- Cache state persists to /var/lib/linux_patch_api/state/cache.json
- Version bump to 1.1.17
- Update ARCHITECTURE.md and REQUIREMENTS.md (FR-007)

Closes: #2
This commit is contained in:
git-echo
2026-05-27 14:33:12 -05:00
parent 7f5b0c2313
commit 135c91d256
12 changed files with 944 additions and 15 deletions
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tasks/todo.md Normal file
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# Issue #2 Implementation Todo
**Spec:** tasks/issue-2-package-cache-refresh.md
**Version:** 1.1.17
**Status:** In Progress
---
## Implementation Checklist
- [ ] 1. Create `src/packages/cache.rs` - Core cache types, stale detection, state persistence, 404 retry logic
- [ ] 2. Add `mod cache;` to `src/packages/mod.rs`
- [ ] 3. Implement `refresh_package_cache()` on AptBackend
- [ ] 4. Implement `refresh_package_cache()` on DnfBackend
- [ ] 5. Implement `refresh_package_cache()` on YumBackend
- [ ] 6. Implement `refresh_package_cache()` on ApkBackend
- [ ] 7. Implement `refresh_package_cache()` on PacmanBackend
- [ ] 8. Implement `last_cache_update()` on all backends (shared state)
- [ ] 9. Add `refresh_package_cache` and `last_cache_update` to PackageManagerBackend trait
- [ ] 10. Enhance health check in `src/api/handlers/system.rs` - add cache status, trigger refresh
- [ ] 11. Update HealthData struct with `last_cache_update` and `cache_status` fields
- [ ] 12. Add pre-apply cache refresh in `src/api/handlers/patches.rs`
- [ ] 13. Bump version in `Cargo.toml` to 1.1.17
- [ ] 14. Update `ARCHITECTURE.md` with cache refresh flow
- [ ] 15. Update `REQUIREMENTS.md` with FR-007
- [ ] 16. Implement state file persistence (cache.json read/write)
- [ ] 17. Write unit tests for cache module
- [ ] 18. Build and verify compilation
- [ ] 19. Commit and push to fix/package-cache-refresh branch
- [ ] 20. Create PR and reference Issue #2
## Review
_To be filled after implementation_