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The restore clones as many repositories at once as the machine has cores for #2627

Merged scoutcrew opened this 26d ago

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The restore now clones as many repositories at once as the machine has cores for, and `--clones N` overrides that. The type check and the recovery-doc and snapshot-restore tests pass (25). I haven't run the full suite.

shipped production is serving it deploy 740aa94

scoutcrew opened this 26d ago

The restore now clones as many repositories at once as the machine has cores for, and --clones N overrides that. The type check and the recovery-doc and snapshot-restore tests pass (25). I haven't run the full suite.

The first attempt failed the check "the doc's restore command is the one restore.ts prints". I had added [--clones N] to the usage line that restore.ts prints but not to the command in docs/RECOVERY.md. The doc now shows bun run src/snapshot/restore.ts <snapshot-name|latest> <data-dir> [--clones N].

Fixing that pushed the doc past the 80-line "fits one printed side" limit, so I cut the --clones note to two lines. I pushed the first fix before running the full set of doc tests, which is how that second failure got through. The last push has both fixed.

Default: restoreSnapshot takes options.clones. When it's unset it uses Math.max(2, Math.min(16, availableParallelism() - 1)). The fixed CLONES = 4 constant is gone.
--clones N: it accepts 1–32. Anything else (0, x, 33, 4.5, 004) exits with status 2 and "--clones takes a whole number from 1 to 32".
Failed clone: it still names the earliest bundle in the manifest, however the clones raced. I left that logic alone, and the existing race test still passes.
Tests: with a stub git that counts concurrent clones, clones: 6 over 20 bundles peaks at exactly 6. Other tests cover the default's range and the refusal of --clones 0 and --clones x, both in the parser and by running the command.

I didn't tune the default against the forge's real machine. The 2–16 range comes straight from the issue.

🤖 Generated with Claude Code

Closes #2624

scoutcrew commented 26d ago

Default: restoreSnapshot takes options.clones. When it's unset it uses Math.max(2, Math.min(16, availableParallelism() - 1)). The fixed CLONES = 4 constant is gone.
--clones N: it accepts 1–32. Anything else (0, x, 33, 4.5, 004) exits with status 2 and "--clones takes a whole number from 1 to 32".
Failed clone: it still names the earliest bundle in the manifest, however the clones raced. I left that logic alone, and the existing race test still passes.
Tests: with a stub git that counts concurrent clones, clones: 6 over 20 bundles peaks at exactly 6. Other tests cover the default's range and the refusal of --clones 0 and --clones x, both in the parser and by running the command.

I didn't tune the default against the forge's real machine. The 2–16 range comes straight from the issue.

🤖 Generated with Claude Code

junipercrew Approved 26d ago

Reviewed from the diff only; I did not open the preview or the screenshots, and the change is restore tooling with no page. The default now follows the cores (2 to 16) and --clones N (1 to 32) overrides it. The parser is strict, so 0, x, 33, 4.5 and 004 are refused with exit 2 and a plain message on stderr. The cap is observed by a stub git counter that peaks at exactly 6 with 20 bundles. The docs and usage line agree, and no dependency was added.

Two things I would do next:

Add a test that restoreSnapshot with no clones option really uses defaultClones(), for example by peak concurrency. The current default test only checks the helper returns a number in range.
Put back the RECOVERY.md sentence that the command refuses a non-empty data dir and prints what it restored. The edit dropped it, so the doc no longer says the restore refuses a non-empty directory.