actionhero/dist/modules/redis.js

The reusable, scalable, and quick node.js API server for stateless and stateful applications

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.redis = void 0;
const uuid = require("uuid");
const index_1 = require("./../index");
var redis;
(function (redis) {
    /**
     * Publish a message to all other Actionhero nodes in the cluster.  Will be authenticated against `api.config.serverToken`
     * ```js
     * let payload = {
     *   messageType: 'myMessageType',
     *   serverId: api.id,
     *   serverToken: api.config.general.serverToken,
     *   message: 'hello!'
     * }
     *
     * await api.redis.publish(payload)
     * ```
     */
    async function publish(payload) {
        const channel = index_1.config.general.channel;
        const connection = index_1.api.redis.clients.client;
        const stringPayload = JSON.stringify(payload);
        if (connection.status !== "close" && connection.status !== "end") {
            return connection.publish(channel, stringPayload);
        }
        else {
            (0, index_1.log)(`cannot send message, redis disconnected`, "error", {
                channel,
                payload,
            });
        }
    }
    redis.publish = publish;
    /**
     * Invoke a command on all servers in this cluster.
     */
    async function doCluster(method, args = [], connectionId, waitForResponse = false) {
        const messageId = uuid.v4();
        const payload = {
            messageType: "do",
            serverId: index_1.id,
            serverToken: index_1.config.general.serverToken,
            messageId: messageId,
            method: method,
            connectionId: connectionId,
            args: args, // [1,2,3]
        };
        // we need to be sure that we build the response-handling promise before sending the request to Redis
        // it is possible for another node to get and work the request before we resolve our write
        // see https://github.com/actionhero/actionhero/issues/1244 for more information
        if (waitForResponse) {
            return new Promise(async (resolve, reject) => {
                const timer = setTimeout(() => reject(new Error("RPC Timeout")), index_1.config.general.rpcTimeout);
                index_1.api.redis.rpcCallbacks[messageId] = { timer, resolve, reject };
                try {
                    await redis.publish(payload);
                }
                catch (e) {
                    clearTimeout(timer);
                    delete index_1.api.redis.rpcCallbacks[messageId];
                    throw e;
                }
            });
        }
        else {
            return redis.publish(payload);
        }
    }
    redis.doCluster = doCluster;
    async function respondCluster(messageId, response) {
        const payload = {
            messageType: "doResponse",
            serverId: index_1.id,
            serverToken: index_1.config.general.serverToken,
            messageId: messageId,
            response: response, // args to pass back, including error
        };
        await redis.publish(payload);
    }
    redis.respondCluster = respondCluster;
})(redis || (exports.redis = redis = {}));