Implement cache client event listeners about cache-manager HOT 3 OPEN

export class RedisClientEventListener implements OnModuleInit, OnModuleDestroy {
  private readonly logger = new Logger(RedisClientEventListener.name);
  private readonly redisStore: RedisStore;

  constructor(@Inject(CACHE_MANAGER) readonly cacheManager: Cache) {
    this.redisStore = cacheManager.store as unknown as RedisStore;
  }

  onModuleInit(): void {
    const client = this.redisStore.getClient();

    if (!client) {
      this.logger.error('no redis client initialised');
    }

    if (client.isReady) {
      this.logger.log('redis client is connected and ready');
    }

    client.on('connect', () => {
      this.logger.log('redis client is connecting to server...');
    });

    client.on('ready', () => {
      this.logger.log('redis client is ready');
    });

    client.on('end', () => {
      this.logger.log('redis client connection closed');
    });

    client.on('error', (error: Error) => {
      this.logger.error(error, 'redis client received an error');
    });
  }

  async onModuleDestroy(): Promise<void> {
    await this.redisStore.getClient().quit();
  }
}

@Module({
  imports: [
    CacheModule.registerAsync(cacheModuleOptions),
  ],
  controllers: [SomeController],
})
export class SomeModule extends RedisClientEventListener {}