the-other-dude/.planning/phases/06-history-api/06-02-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
06-history-api	02	api	fastapi sqlalchemy openbao transit-decrypt rbac snapshot	phase provides 06-history-api config_history_service.py with get_config_history, config_history router with RBAC phase provides 05-diff-engine router_config_diffs and router_config_snapshots tables with encrypted config data	GET /api/tenants/{tid}/devices/{did}/config/{snapshot_id} endpoint (decrypted snapshot) GET /api/tenants/{tid}/devices/{did}/config/{snapshot_id}/diff endpoint (unified diff) get_snapshot and get_snapshot_diff service functions	frontend-config-history frontend-diff-viewer	added patterns Transit decrypt in service layer with try/finally close 404 for missing snapshots/diffs	created modified backend/app/services/config_history_service.py backend/app/routers/config_history.py backend/tests/test_config_history_service.py	Transit decrypt in get_snapshot with try/finally for clean openbao lifecycle 500 error wrapping for Transit decrypt failures in router (not service)	Snapshot retrieval filters by id + device_id + tenant_id for RLS-safe queries	API-02 API-03 API-04	2min	2026-03-13

Phase 6 Plan 2: Snapshot View and Diff Retrieval Summary

Snapshot view and diff retrieval endpoints with Transit decrypt for full config text and unified diff, enforcing viewer+ RBAC

Performance

• Duration: 2 min
• Started: 2026-03-13T04:01:58Z
• Completed: 2026-03-13T04:03:39Z
• Tasks: 2
• Files modified: 3

Accomplishments

• get_snapshot function decrypts config via OpenBao Transit and returns plaintext with metadata
• get_snapshot_diff function queries diff by new_snapshot_id for a device/tenant
• Two new router endpoints with viewer+ RBAC and config:read scope enforcement
• 4 new tests (8 total) covering decrypted content, not-found, diff retrieval, and no-diff cases

Task Commits

Each task was committed atomically:

1. Task 1: Snapshot and diff service functions with tests (TDD) - 83cd661 (feat)
2. Task 2: Snapshot and diff router endpoints - af7007d (feat)

Files Created/Modified

• backend/app/services/config_history_service.py - Added get_snapshot (Transit decrypt) and get_snapshot_diff query functions
• backend/app/routers/config_history.py - Two new GET endpoints with RBAC, 404/500 error handling
• backend/tests/test_config_history_service.py - 4 new tests with mocked Transit and DB sessions

Decisions Made

• Transit decrypt happens in service layer (get_snapshot), error wrapping in router layer (500 response)
• Query filters include device_id + tenant_id alongside snapshot_id for RLS-safe access

Deviations from Plan

None - plan executed exactly as written.

Issues Encountered

None

User Setup Required

None - no external service configuration required.

Next Phase Readiness

• All 3 config history API endpoints complete (timeline, snapshot view, diff view)
• Phase 06 complete -- ready for frontend integration

---

Phase: 06-history-api Completed: 2026-03-13