Commit Graph

2 Commits

Author SHA1 Message Date
knacky
12d131c826 feat(backend): add content-addressed gzip blob store (D-012)
Two on-disk pools per D-012:
- `MIMIC_BLOB_ROOT` (default `/var/lib/mimic/blobs/`) holds C2 polling
  output blobs, content-addressed gzip layout `<aa>/<bb>/<sha256>.gz`.
- `MIMIC_EVIDENCE_ROOT` (default `/var/lib/mimic/evidence/`) reserved for
  user-uploaded evidence (flat per-engagement, no compression). Wired only
  in config + .env.example here; F8 endpoint lands later.

`mimic.storage.blob`:
- `blob_path(root, sha256_hex)` validates the digest and returns the CAS
  path. Raises ValueError on a malformed digest (length != 64 or non-hex).
- `store_blob(root, data)` hashes, gzip-compresses, atomically writes to
  `<aa>/<bb>/<sha256>.gz` (0o750 dir perms, 0o640 file perms). Idempotent:
  duplicate writes leave mtime untouched.

5 new unit tests cover happy path, deduplication, idempotency, malformed
digest, and the two-byte-pair directory layout.
2026-05-21 20:44:59 +02:00
knacky
a93c959444 chore(backend): bootstrap Python 3.12+ project skeleton (B0.1)
- pyproject.toml with ruff + mypy strict + pytest + coverage >=70%
- Makefile with Docker/Podman auto-detect
- Multi-stage Dockerfile (python:3.12-slim-bookworm, non-root user)
- docker-compose.yml for Postgres dev DB
- alembic.ini wired to src/mimic/db/migrations
- scripts/postgres-init/00-roles.sql seeds the audit writer role
- .env.example documents every MIMIC_* var (no secrets committed)
2026-05-21 20:36:03 +02:00