Local RPM repos regenerated `repomd.xml` on every request and advertised a `primary.xml.gz` sha256 that drifted every second, because `time.Now().Unix()` was embedded inside the gzipped `primary.xml` (and in `repomd` `<revision>`/`<timestamp>`). The advertised hash therefore never matched the content-addressed `<sha256>-primary.xml.gz` bytes a second later or on the other replica, so `dnf` failed with a checksum mismatch. Part of #117.
How:
- Derives `<time file=>` in `primary.xml` from the persisted `rpm_metadata.created_at` instead of the wall clock; unset timestamps collapse to a fixed `0`.
- Derives `repomd` `<revision>`/`<timestamp>` from the newest package upload time, so `repomd.xml` is byte-identical across replicas and requests.
- Adds `file_path` as a total-order tiebreak to the metadata `ORDER BY`.
- Pins the gzip header (`OS: 255`) so compressed bytes depend only on the payload.
- Adds regression tests: generators are byte-identical across two runs, and the sha256 in `repomd.xml` equals the sha256 of the bytes each `serve*` handler returns.
Reviewed-on: #118
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>
unkin-agent
a8aa0c231b