celery-node-routing
Version:
celery written in nodejs
46 lines (45 loc) • 1.43 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.newCeleryBackend = void 0;
const url = require("url");
const redis_1 = require("./redis");
const amqp_1 = require("./amqp");
/**
* Support backend protocols of celery.node.
* @private
* @constant
*/
const supportedProtocols = ["redis", "rediss", "amqp", "amqps"];
/**
* takes url string and after parsing scheme of url, returns protocol.
*
* @private
* @param {string} uri
* @returns {String} protocol string.
* @throws {Error} when url has unsupported protocols
*/
function getProtocol(uri) {
const protocol = url.parse(uri).protocol.slice(0, -1);
if (supportedProtocols.indexOf(protocol) === -1) {
throw new Error(`Unsupported type: ${protocol}`);
}
return protocol;
}
/**
*
* @param {string} CELERY_BACKEND
* @param {object} CELERY_BACKEND_OPTIONS
* @returns {CeleryBackend}
*/
function newCeleryBackend(CELERY_BACKEND, CELERY_BACKEND_OPTIONS) {
const brokerProtocol = getProtocol(CELERY_BACKEND);
if (["redis", "rediss"].indexOf(brokerProtocol) > -1) {
return new redis_1.default(CELERY_BACKEND, CELERY_BACKEND_OPTIONS);
}
if (["amqp", "amqps"].indexOf(brokerProtocol) > -1) {
return new amqp_1.default(CELERY_BACKEND, CELERY_BACKEND_OPTIONS);
}
// do not reach here.
throw new Error("unsupprted celery backend");
}
exports.newCeleryBackend = newCeleryBackend;