bhutan-ndi
Version:
A package to simplify Bhutan NDI integration
80 lines (79 loc) • 3.81 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __asyncValues = (this && this.__asyncValues) || function (o) {
if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
var m = o[Symbol.asyncIterator], i;
return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i);
function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }
function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.connectToNATS = connectToNATS;
exports.subscribeToThread = subscribeToThread;
exports.closeNATSConnection = closeNATSConnection;
const nats_1 = require("nats");
const dotenv_1 = __importDefault(require("dotenv"));
dotenv_1.default.config();
let natsConnection = null;
const sc = (0, nats_1.StringCodec)();
function connectToNATS() {
return __awaiter(this, void 0, void 0, function* () {
if (natsConnection)
return natsConnection;
// Import nkeyAuthenticator from 'nats'
// Make sure to add this import at the top: import { nkeyAuthenticator } from 'nats';
natsConnection = yield (0, nats_1.connect)({
servers: process.env.NATS_URL,
authenticator: (0, nats_1.nkeyAuthenticator)(() => {
if (!process.env.NATS_SEED)
throw new Error('NATS_SEED is not defined');
return Uint8Array.from(Buffer.from(process.env.NATS_SEED, 'base64'));
})
});
return natsConnection;
});
}
function subscribeToThread(threadId, callback) {
return __awaiter(this, void 0, void 0, function* () {
const nc = yield connectToNATS();
const sub = nc.subscribe(threadId);
(() => __awaiter(this, void 0, void 0, function* () {
var _a, e_1, _b, _c;
try {
for (var _d = true, sub_1 = __asyncValues(sub), sub_1_1; sub_1_1 = yield sub_1.next(), _a = sub_1_1.done, !_a; _d = true) {
_c = sub_1_1.value;
_d = false;
const m = _c;
callback(JSON.parse(sc.decode(m.data)));
}
}
catch (e_1_1) { e_1 = { error: e_1_1 }; }
finally {
try {
if (!_d && !_a && (_b = sub_1.return)) yield _b.call(sub_1);
}
finally { if (e_1) throw e_1.error; }
}
}))();
return sub;
});
}
function closeNATSConnection() {
return __awaiter(this, void 0, void 0, function* () {
if (natsConnection) {
yield natsConnection.close();
natsConnection = null;
}
});
}