Daan MeijerandClaude Opus 5.5
3b61215f6b
The live tail reads an upload in pieces while it is posted, and each piece queued a 7z-tail candidate for the last volume it had seen so far (release 306905984: seven, for .002-.008). Only the last volume's end holds the 7z listing. When candidates are stored, and when releases are merged, waiting tails below the release's highest volume are deleted. All tails of the highest volume stay: a piece that saw only part of it queued a segment that is not its last. RAR is unaffected: it lists its files in the first volume's header and gets no tail candidate. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
23 lines
1.4 KiB
TypeScript
23 lines
1.4 KiB
TypeScript
/**
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* 7z keeps its listing at the end of the last volume, so a split 7z gets a `7z-tail` probe candidate: the last
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* segment of its highest volume (lib/edge/range_indexer.ts). RAR lists its files in every volume's header, and
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* its first volume's start (one `archive` candidate) is enough. The live tail reads an upload in pieces while
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* it's posted, and each piece queues a tail for the last volume it saw so far (TsIgNBewuFbuwWy: 7, for
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* .002–.008; LOG.md 2026-10-23 (94)); merges bring their members' tails together. Of the given releases'
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* waiting tails, those below the release's highest volume go. Those of the highest volume stay, all of them:
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* a piece that saw only part of it queued a segment that isn't its last.
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*/
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export async function pruneSevenZipTails(trx: any, releaseIds: (number | string)[]): Promise<number> {
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if (releaseIds.length === 0) return 0
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const result = await trx.rawQuery(
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`DELETE FROM probe_candidates pc USING (
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SELECT id, status, volume, max(volume) OVER (PARTITION BY release_id) AS highest
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FROM (SELECT id, release_id, status, substring(file from '\\.7z\\.(\\d{1,4})$')::int AS volume
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FROM probe_candidates WHERE release_id = ANY(?) AND kind = '7z-tail') t
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) s
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WHERE pc.id = s.id AND s.status = 'waiting' AND s.volume < s.highest`,
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[releaseIds.map(String)]
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)
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return result.rowCount ?? 0
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}
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