Part of #117. Local generated repodata must be byte-identical across the two no-affinity replicas and across every regeneration, so apt/apk never hit a checksum mismatch between an index's advertised hash and the bytes actually served. This does the deb+apk half (the rpm half landed in #118).
How:
- Derive the deb `Release` `Date:` from the newest persisted `created_at` (RFC1123Z, UTC) instead of `time.Now()`; carry `created_at` through the deb metadata SELECT and `DebMetadata`. An empty repo falls back to the Unix epoch. This also stops `Date:` running ahead of wall clock.
- Pin the apk `APKINDEX` tar header `ModTime` to the Unix epoch instead of the zero-value `time.Time`, so it is never wall-clock derived.
- Give both list queries a genuine total order by adding a `file_path` tiebreak (name/version/arch is not unique).
- Add guard tests: deb generators byte-identical across generations; the `Release` checksum/size matches the served `Packages`/`Packages.gz` bytes (the exact apt invariant); `Date:` pinned to `created_at`; apk index byte-identical and tar `ModTime` pinned to epoch.
Reviewed-on: #119
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>
Brings Debian/apt to artifactapi with feature parity to the existing rpm support (local + remote), so `.deb` packages can be hosted as a flat apt repo and a Debian/Ubuntu mirror can be cached through the proxy.
- Adds `deb` to the package-type enum and registers a new `internal/provider/deb` provider.
- Classifies `.deb` blobs immutable and the apt index surface (`Packages`, `Release`, `InRelease`, `dists/`, by-hash) mutable so the caching engine revalidates it.
- Parses the `.deb` in pure Go (ar archive to `control.tar.{gz,xz,zst}` to `./control`), storing the raw control stanza plus computed size/md5/sha256 as `deb_metadata`.
- Serves a flat apt repo (`deb [trusted=yes] .../ ./`): generates `Packages`, `Packages.gz` and an unsigned `Release` (returns 404 for `InRelease`/`Release.gpg`), mirroring rpm unsigned repodata / gpgcheck=0 trust model.
- Proxies a remote mirror via `UpstreamURL`/`ContentType`/`AuthHeaders` (HTTP Basic).
- Adds the `deb_metadata` table to `migrate()`, DB access methods, a `MinimalDeb` pure-Go fixture, unit tests, and a `dockere2e` `TestLocalDebRepo`.
---------
Co-authored-by: unkin-agent <unkin-agent@git.unkin.net>
Reviewed-on: #111
Co-authored-by: Unkin Agent <unkin-agent@unkin.net>
Co-committed-by: Unkin Agent <unkin-agent@unkin.net>
unkin-agent