Files
usenet-indexer/app/services/settler.ts
T
Daan MeijerandClaude Opus 5.5 885e4e6541
Test and deploy / test (push) Successful in 45s
Test and deploy / edge (push) Successful in 1m56s
Test and deploy / deploy (push) Successful in 1m17s
Settler: history releases settle after half an hour
A release whose last post is 6 hours old gets nothing from the tail, only
fragments from neighbouring ranges: settled once unchanged for 30 minutes.
Waiting 6 hours after it was read held every history release back from
phase 2 after each reset; with the hourly sweeps' resets the prober (and so
the par2 merge) never had work.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-12 09:42:53 +02:00

37 lines
1.7 KiB
TypeScript

import db from '@adonisjs/lucid/services/db'
/** Releases unchanged for this long are settled (ranges are read in order; the merger adds within minutes). */
const QUIET_HOURS = 6
/**
* History: a release whose last post is QUIET_HOURS old gets nothing new from the tail, only from the
* neighbouring ranges' fragments, which the merger adds within minutes: settled once unchanged this long.
* Waiting QUIET_HOURS after it was read held every history release back from phase 2 for six hours after
* each reset (the hourly sweeps' resets kept the prober idle; LOG.md 2026-10-12 (13)).
*/
const QUIET_HISTORY_MINUTES = 30
const BATCH = 50_000
/**
* Settles releases (REBUILD.md, part 8): once nothing has been added for
* QUIET_HOURS (QUIET_HISTORY_MINUTES once its last post is that old), its completeness is decided: complete when every file the
* [i/N] counter announced was found, unknown without a counter (phase 2
* reads par2 sets for those). Phase 2 picks its work from settled releases.
*/
class Settler {
async run(): Promise<number> {
let settled = 0
while (true) {
const { rowCount } = await db.rawQuery(
`UPDATE releases SET settled_at = now(), complete = CASE WHEN file_total IS NULL THEN NULL ELSE files >= file_total END
WHERE id IN (SELECT id FROM releases WHERE settled_at IS NULL AND last_seen_at < now() - make_interval(mins => ?)
AND (last_seen_at < now() - make_interval(hours => ?) OR coalesce(last_posted_at, posted_at) < now() - make_interval(hours => ?)) LIMIT ?)`,
[QUIET_HISTORY_MINUTES, QUIET_HOURS, QUIET_HOURS, BATCH]
)
settled += rowCount ?? 0
if ((rowCount ?? 0) < BATCH) return settled
}
}
}
export default new Settler()