alepha/src/lock/redis/providers/RedisLockProvider.ts

Easy-to-use modern TypeScript framework for building many kind of applications.

import { $inject } from "alepha";
import type { LockProvider } from "alepha/lock";
import { $logger } from "alepha/logger";
import { RedisProvider, type RedisSetOptions } from "alepha/redis";

export class RedisLockProvider implements LockProvider {
  protected readonly log = $logger();
  protected readonly redisProvider = $inject(RedisProvider);

  public async set(
    key: string,
    value: string,
    nx?: boolean,
    px?: number,
  ): Promise<string> {
    const options: RedisSetOptions = {
      GET: true, // all the secrets of $lock is based on this
    };

    if (px) {
      options.expiration = {
        type: "PX",
        value: px,
      };
    }

    if (nx) {
      options.condition = "NX";
    }

    const resp = await this.redisProvider.set(key, value, options);

    return resp.toString("utf-8");
  }

  public async del(...keys: string[]): Promise<void> {
    await this.redisProvider.del(keys);
  }
}