@tableau/taco-toolkit
Version:
Tableau Connector Toolkit
114 lines • 7.07 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 __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (g && (g = 0, op[0] && (_ = 0)), _) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.closeHttpServer = exports.startHttpServer = exports.startServerWithRetry = void 0;
var eps_logger_1 = require("../logging/eps-logger");
/**
* Starts a server with auto-assigned port from PortManager.
*
* The function will re-try on a different port if the startServer function throws
* an error with property code: 'EADDRINUSE', for a maximum of 5 attempts.
*
* @param startServer An async function responsible for starting the server on a given port
* @param portManager The manager responsible for assigning and reserving ports
* @returns The port number on which the server is successfully started
*/
function startServerWithRetry(startServer, portManager) {
return __awaiter(this, void 0, void 0, function () {
var retries, attempts, port, e_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
retries = 5;
attempts = [];
_a.label = 1;
case 1:
if (!(retries > 0)) return [3 /*break*/, 7];
return [4 /*yield*/, portManager.reserveUnusedPort()];
case 2:
port = _a.sent();
_a.label = 3;
case 3:
_a.trys.push([3, 5, , 6]);
return [4 /*yield*/, startServer(port)];
case 4:
_a.sent();
return [2 /*return*/, port];
case 5:
e_1 = _a.sent();
if (e_1.code === 'EADDRINUSE') {
eps_logger_1.Logger.warn(e_1);
retries--;
attempts.push(port);
return [3 /*break*/, 1];
}
throw e_1;
case 6: return [3 /*break*/, 1];
case 7: throw new Error("listen EADDRINUSE: addresses already in use: ".concat(attempts));
}
});
});
}
exports.startServerWithRetry = startServerWithRetry;
/**
* Starts an HTTP server on the given port.
*/
function startHttpServer(server, port) {
return new Promise(function (resolve, reject) {
server
.listen(port, function () {
resolve();
})
.on('error', function (error) {
reject(error);
});
});
}
exports.startHttpServer = startHttpServer;
function closeHttpServer(server) {
return new Promise(function (resolve, reject) {
server.close(function (error) {
if (error) {
reject(error);
}
resolve();
});
});
}
exports.closeHttpServer = closeHttpServer;
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