node-redisson/dist/executor/PubSubCommandExecutor.js

Distributed lock with Redis implementation for Node.js

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.PubSubCommandExecutor = void 0;
const CommandExecutor_1 = require("./CommandExecutor");
const node_events_1 = __importDefault(require("node:events"));
class PubSubCommandExecutor extends CommandExecutor_1.CommandExecutor {
    constructor(config) {
        super(config);
        this.eventEmitter = new node_events_1.default();
        this.subscribeRedis.on('message', (channel, message) => {
            this.eventEmitter.emit(channel, message);
        });
    }
    async subscribe(eventName, listener) {
        await this.subscribeRedis.subscribe(eventName);
        this.eventEmitter.on(eventName, listener);
    }
    async unsubscribe(eventName, listener) {
        await this.subscribeRedis.unsubscribe(eventName);
        this.eventEmitter.off(eventName, listener);
    }
    async subscribeOnce(eventName, listener) {
        await this.subscribeRedis.subscribe(eventName);
        this.eventEmitter.once(eventName, listener);
    }
    async publish(eventName, e) {
        await this.redis.publish(eventName, e);
        return null;
    }
    getRedisScripts() {
        const unlockCommand = `redis.call('publish', KEYS[2], ARGV[1]);`;
        return {
            rUnlockInner: CommandExecutor_1.DEFAULT_REDIS_SCRIPTS.rUnlockInner.lua.replace('#PUB_UNLOCK_REPLACE#', unlockCommand),
            rForceUnlock: CommandExecutor_1.DEFAULT_REDIS_SCRIPTS.rForceUnlock.lua.replace('#PUB_UNLOCK_REPLACE#', unlockCommand),
        };
    }
}
exports.PubSubCommandExecutor = PubSubCommandExecutor;