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API store뿐 아니라 월 자동 개막과 runtime clock shift도 공통 Lua writer를 사용한다. 프로필 초기화 시 revision key도 함께 제거한다.
75 lines
2.6 KiB
TypeScript
75 lines
2.6 KiB
TypeScript
export interface TournamentSourceKeys {
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sourceRevisionKey: string;
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sourceRevisionChannel: string;
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}
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export interface TournamentProjectionRedis {
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eval(script: string, options: { keys: string[]; arguments: string[] }): Promise<unknown>;
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publish?(channel: string, message: string): Promise<unknown>;
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}
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export interface TournamentProjectionWrite {
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key: string;
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value: unknown;
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}
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const WRITE_TOURNAMENT_PROJECTION_SCRIPT = `
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local revision_key = KEYS[#KEYS]
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local current = redis.call('GET', revision_key)
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if current then
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if not string.match(current, '^%d+$') then
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return redis.error_reply('invalid tournament source revision')
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end
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if string.len(current) > 18 then
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return redis.error_reply('tournament source revision exhausted')
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end
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end
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for index = 1, #KEYS - 1 do
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redis.call('SET', KEYS[index], ARGV[index])
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end
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local revision = redis.call('INCR', revision_key)
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return tostring(revision)
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`;
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export const parseTournamentSourceRevision = (value: unknown): string | null => {
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if (typeof value === 'number') {
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return Number.isSafeInteger(value) && value >= 0 ? String(value) : null;
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}
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if (typeof value === 'bigint') {
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return value >= 0n ? value.toString() : null;
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}
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return typeof value === 'string' && /^(?:0|[1-9]\d*)$/u.test(value) ? value : null;
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};
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/** Atomically stores one or more tournament payloads and advances one profile head. */
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export const writeTournamentProjection = async (
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redis: TournamentProjectionRedis,
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keys: TournamentSourceKeys,
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writes: readonly TournamentProjectionWrite[]
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): Promise<string> => {
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if (writes.length === 0) {
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throw new Error('Tournament projection write must contain at least one payload.');
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}
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if (new Set(writes.map(({ key }) => key)).size !== writes.length) {
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throw new Error('Tournament projection write keys must be unique.');
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}
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const result = await redis.eval(WRITE_TOURNAMENT_PROJECTION_SCRIPT, {
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keys: [...writes.map(({ key }) => key), keys.sourceRevisionKey],
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arguments: writes.map(({ value }) => JSON.stringify(value)),
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});
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const sourceRevision = parseTournamentSourceRevision(result);
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if (sourceRevision === null) {
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throw new Error('토너먼트 source revision 갱신 결과가 올바르지 않습니다.');
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}
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if (redis.publish) {
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try {
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await redis.publish(keys.sourceRevisionChannel, JSON.stringify({ sourceRevision }));
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} catch {
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// Payload and revision are committed; publication remains best effort.
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}
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}
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return sourceRevision;
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};
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