31 lines
821 B
TypeScript
31 lines
821 B
TypeScript
import redis from '../db/redis';
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import { promisify } from 'util';
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/**
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* Retry delay (ms) for lock acquisition
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*/
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const retryDelay = 100;
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const lock: (key: string, timeout?: number) => Promise<() => void>
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= redis
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? promisify(require('redis-lock')(redis, retryDelay))
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: async () => () => { };
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/**
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* Get AP Object lock
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* @param uri AP object ID
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* @param timeout Lock timeout (ms), The timeout releases previous lock.
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* @returns Unlock function
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*/
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export function getApLock(uri: string, timeout = 30 * 1000) {
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return lock(`ap-object:${uri}`, timeout);
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}
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export function getFetchInstanceMetadataLock(host: string, timeout = 30 * 1000) {
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return lock(`instance:${host}`, timeout);
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}
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export function getChartInsertLock(lockKey: string, timeout = 30 * 1000) {
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return lock(`chart-insert:${lockKey}`, timeout);
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}
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