import { Script } from "./twins.js";
//#region src/scripts/placement.d.ts
/** New placements need this much lease left, matching pinned's worker-side
 * healthy buffer; capped at leaseTtl/3 so short-lease fleets stay placeable. */
declare const PLACEMENT_HEALTH_MARGIN_MS = 5000;
/** Fixed rebase point of the placement-epoch time arm (2026-01-01 UTC). */
declare const PROJECT_EPOCH_MS: number;
/**
 * KEYS: placements, workers, ns_workers, boot_time, overwritten, epoch_floor
 * ARGV: id, now(ms), rand1, rand2, leaseTtlMs, ns,
 *       preferredSessionId(''=none), affinityKey(''=none), balanceFactor,
 *       hostname, env, takeover, excludeSessionId(''=none),
 *       ejectedSessionIdsJson(''=none; skipped while another candidate remains)
 * Returns [status, workerRecordRaw|'', aux, carriedExpiry|'', epoch|'',
 * fresh]: aux is the remaining quarantine ms on 'quarantine', else '1'/'0'
 * for the id sitting on the overwritten list; carriedExpiry is set only when
 * this call placed with a carried wind-down; epoch is the placement row's
 * epoch on 'forward'; fresh is '1' when this call created the placement row.
 * On 'takeover-pending' aux is '1' when this call set the fence and the 4th
 * slot carries the fence expiry.
 * A re-claim (evicting a prior row before placing anew) writes the id's
 * overwritten marker atomically, stamping the minted epoch onto it (backoff
 * meta survives a re-list); a dead row that cannot be re-claimed
 * yet (quarantine, no backends) is left in place as the durability marker.
 * Each new placement decrements the chosen worker's stored headroom, so a
 * concurrent burst derates it until the next heartbeat refresh.
 */
declare const resolveScript: Script.Def;
/**
 * KEYS: placements
 * ARGV: sessionId, prevSessionId(''=none), now(ms), id...
 * Register-time reclaim, restricted to process continuity: only rows still
 * owned by prevSessionId re-bind to sessionId, keeping the row epoch (same
 * holder across a lease blip — no writer transition, no mint). A pending
 * wind-down expiry carries onto the re-bound row. Every other id — absent,
 * expired, or owned by any other session — is left untouched and reported;
 * such rows re-place through the resolve claim path when traffic arrives.
 * Returns [claimedCount, [lost id...], [carried id, expiry, ...]].
 */
declare const reclaimScript: Script.Def;
/**
 * KEYS: placements
 * ARGV: deadline(epoch ms, '' clears), id...
 * Sets or clears the wind-down expiry on each placed id's row.
 * Returns [id, owning sessionId, ...] pairs; unplaced ids are skipped.
 */
declare const windDownScript: Script.Def;
/**
 * KEYS: placements
 * ARGV: sessionId, (id, epoch)...
 * Compare-and-delete on (sessionId, epoch): HDELs each id only while its
 * row's sessionId matches and its epoch equals the quoted one ('' quotes an
 * epoch-less row). A mismatch leaves the row.
 * Returns the number of rows deleted.
 */
declare const releaseScript: Script.Def;
/**
 * KEYS: overwritten
 * ARGV: field, epoch, metaJson('' = delete)
 * Compare-and-write fenced on the marker's stamped epoch: '' HDELs the field
 * while its epoch <= the quoted one (a proof of life under epoch E clears
 * every generation listed at or before E); a metaJson re-writes the backoff
 * meta only while the stored epoch equals the quoted one. A marker without a
 * numeric epoch is an error. Returns 1 on write, 0 on skip.
 */
declare const overwrittenCasScript: Script.Def;
//#endregion
export { PLACEMENT_HEALTH_MARGIN_MS, PROJECT_EPOCH_MS, overwrittenCasScript, reclaimScript, releaseScript, resolveScript, windDownScript };
//# sourceMappingURL=placement.d.ts.map