4a91814bfc
Phase 1 Step 4 of PHASE1_RUNBOOK.md, first worked example. Demonstrates
the router -> service delegation pattern for all 18 oversized route
files still above the 500 LOC hard cap.
compliance/api/audit_routes.py (637 LOC) is decomposed into:
compliance/api/audit_routes.py (198) — thin handlers
compliance/services/audit_session_service.py (259) — session lifecycle
compliance/services/audit_signoff_service.py (319) — checklist + sign-off
compliance/api/_http_errors.py ( 43) — reusable error translator
Handlers shrink to 3-6 lines each:
@router.post("/sessions", response_model=AuditSessionResponse)
async def create_audit_session(
request: CreateAuditSessionRequest,
service: AuditSessionService = Depends(get_audit_session_service),
):
with translate_domain_errors():
return service.create(request)
Services are HTTP-agnostic: they raise NotFoundError / ConflictError /
ValidationError from compliance.domain, and the route layer translates
those to HTTPException(404/409/400) via the translate_domain_errors()
context manager in compliance.api._http_errors. The error translator is
reusable by every future Step 4 refactor.
Services take a sqlalchemy Session in the constructor and are wired via
Depends factories (get_audit_session_service / get_audit_signoff_service).
No globals, no module-level state.
Behavior is byte-identical at the HTTP boundary:
- Same paths, methods, status codes, response models
- Same error messages (domain error __str__ preserved)
- Same auto-start-on-first-signoff, same statistics calculation,
same signature hash format, same PDF streaming response
Verified:
- 173/173 pytest compliance/tests/ tests/contracts/ pass
- OpenAPI 360 paths / 484 operations unchanged
- audit_routes.py under soft 300 target
- Both new service files under soft 300 / hard 500
Note: compliance/tests/test_audit_routes.py contains placeholder tests
that do not actually import or call the handler functions — they only
assert on request-data shape. Real behavioral coverage relies on the
contract test. A follow-up commit should add TestClient-based
integration tests for the audit endpoints. Flagged in PHASE1_RUNBOOK.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
backend-compliance
Python/FastAPI service implementing the DSGVO compliance API: DSR, DSFA, consent, controls, risks, evidence, audit, vendor management, ISMS, change requests, document generation.
Port: 8002 (container: bp-compliance-backend)
Stack: Python 3.12, FastAPI, SQLAlchemy 2.x, Alembic, Keycloak auth.
Architecture (target — Phase 1)
compliance/
├── api/ # Routers (thin, ≤30 LOC per handler)
├── services/ # Business logic
├── repositories/ # DB access
├── domain/ # Value objects, domain errors
├── schemas/ # Pydantic models, split per domain
└── db/models/ # SQLAlchemy ORM, one module per aggregate
See ../AGENTS.python.md for the full convention and ../.claude/rules/architecture.md for the non-negotiable rules.
Run locally
cd backend-compliance
pip install -r requirements.txt
export COMPLIANCE_DATABASE_URL=... # Postgres (Hetzner or local)
uvicorn main:app --reload --port 8002
Tests
pytest compliance/tests/ -v
pytest --cov=compliance --cov-report=term-missing
Layout: tests/unit/, tests/integration/, tests/contracts/. Contract tests diff /openapi.json against tests/contracts/openapi.baseline.json.
Public API surface
404+ endpoints across /api/v1/*. Grouped by domain: ai, audit, consent, dsfa, dsr, gdpr, vendor, evidence, change-requests, generation, projects, company-profile, isms. Every path is a contract — see the "Public endpoints" rule in the root CLAUDE.md.
Environment
| Var | Purpose |
|---|---|
COMPLIANCE_DATABASE_URL |
Postgres DSN, sslmode=require |
KEYCLOAK_* |
Auth verification |
QDRANT_URL, QDRANT_API_KEY |
Vector search |
CORE_VALKEY_URL |
Session cache |
Don't touch
Database schema, __tablename__, column names, existing migrations under migrations/. See root CLAUDE.md rule 3.