chromeless
Version:
🖥 Chrome automation made simple. Runs locally or headless on AWS Lambda.
221 lines • 13.9 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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) : new P(function (resolve) { resolve(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 (_) try {
if (f = 1, y && (t = y[op[0] & 2 ? "return" : op[0] ? "throw" : "next"]) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [0, 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 });
var mqtt_1 = require("mqtt");
var got = require("got");
function getEndpoint(remoteOptions) {
if (typeof remoteOptions === 'object' && remoteOptions.endpointUrl) {
return remoteOptions;
}
if (process.env['CHROMELESS_ENDPOINT_URL'] &&
process.env['CHROMELESS_ENDPOINT_API_KEY']) {
return {
endpointUrl: process.env['CHROMELESS_ENDPOINT_URL'],
apiKey: process.env['CHROMELESS_ENDPOINT_API_KEY'],
};
}
throw new Error('No Chromeless remote endpoint & API key provided. Either set as "remote" option in constructor or set as "CHROMELESS_ENDPOINT_URL" and "CHROMELESS_ENDPOINT_API_KEY" env variables.');
}
var RemoteChrome = /** @class */ (function () {
function RemoteChrome(options) {
this.options = options;
this.connectionPromise = this.initConnection();
}
RemoteChrome.prototype.initConnection = function () {
return __awaiter(this, void 0, void 0, function () {
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, new Promise(function (resolve, reject) { return __awaiter(_this, void 0, void 0, function () {
var _this = this;
var timeout, _a, endpointUrl, apiKey, _b, url, channelId_1, channel_1, error_1;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
timeout = setTimeout(function () {
if (_this.channel) {
_this.channel.end();
}
reject(new Error("Timed out after 30sec. Connection couldn't be established."));
}, 30000);
_c.label = 1;
case 1:
_c.trys.push([1, 3, , 4]);
_a = getEndpoint(this.options.remote), endpointUrl = _a.endpointUrl, apiKey = _a.apiKey;
return [4 /*yield*/, got(endpointUrl, {
headers: apiKey
? {
'x-api-key': apiKey,
}
: undefined,
json: true,
})];
case 2:
_b = (_c.sent()).body, url = _b.url, channelId_1 = _b.channelId;
this.channelId = channelId_1;
this.TOPIC_NEW_SESSION = 'chrome/new-session';
this.TOPIC_CONNECTED = "chrome/" + channelId_1 + "/connected";
this.TOPIC_REQUEST = "chrome/" + channelId_1 + "/request";
this.TOPIC_RESPONSE = "chrome/" + channelId_1 + "/response";
this.TOPIC_END = "chrome/" + channelId_1 + "/end";
channel_1 = mqtt_1.connect(url, {
will: {
topic: 'chrome/last-will',
payload: JSON.stringify({ channelId: channelId_1 }),
qos: 1,
retain: false,
},
});
this.channel = channel_1;
if (this.options.debug) {
channel_1.on('error', function (error) { return console.log('WebSocket error', error); });
channel_1.on('offline', function () { return console.log('WebSocket offline'); });
}
channel_1.on('connect', function () {
if (_this.options.debug) {
console.log('Connected to message broker.');
}
channel_1.subscribe(_this.TOPIC_CONNECTED, { qos: 1 }, function () {
channel_1.on('message', function (topic) { return __awaiter(_this, void 0, void 0, function () {
return __generator(this, function (_a) {
if (this.TOPIC_CONNECTED === topic) {
clearTimeout(timeout);
resolve();
}
return [2 /*return*/];
});
}); });
channel_1.publish(_this.TOPIC_NEW_SESSION, JSON.stringify({ channelId: channelId_1, options: _this.options }), { qos: 1 });
});
channel_1.subscribe(_this.TOPIC_END, function () {
channel_1.on('message', function (topic, buffer) { return __awaiter(_this, void 0, void 0, function () {
var message, data;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!(this.TOPIC_END === topic)) return [3 /*break*/, 2];
message = buffer.toString();
data = JSON.parse(message);
if (data.outOfTime) {
console.warn("Chromeless Proxy disconnected because it reached it's execution time limit (5 minutes).");
}
else if (data.inactivity) {
console.warn('Chromeless Proxy disconnected due to inactivity (no commands sent for 30 seconds).');
}
else {
console.warn("Chromeless Proxy disconnected (we don't know why).", data);
}
return [4 /*yield*/, this.close()];
case 1:
_a.sent();
_a.label = 2;
case 2: return [2 /*return*/];
}
});
}); });
});
});
return [3 /*break*/, 4];
case 3:
error_1 = _c.sent();
console.error(error_1);
reject(new Error('Unable to get presigned websocket URL and connect to it.'));
return [3 /*break*/, 4];
case 4: return [2 /*return*/];
}
});
}); })];
case 1:
_a.sent();
return [2 /*return*/];
}
});
});
};
RemoteChrome.prototype.process = function (command) {
return __awaiter(this, void 0, void 0, function () {
var _this = this;
var promise;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
// wait until lambda connection is established
return [4 /*yield*/, this.connectionPromise];
case 1:
// wait until lambda connection is established
_a.sent();
if (this.options.debug) {
console.log("Running remotely: " + JSON.stringify(command));
}
promise = new Promise(function (resolve, reject) {
_this.channel.subscribe(_this.TOPIC_RESPONSE, function () {
_this.channel.on('message', function (topic, buffer) {
if (_this.TOPIC_RESPONSE === topic) {
var message = buffer.toString();
var result = JSON.parse(message);
if (result.error) {
reject(result.error);
}
else if (result.value) {
resolve(result.value);
}
else {
resolve();
}
}
});
_this.channel.publish(_this.TOPIC_REQUEST, JSON.stringify(command));
});
});
return [2 /*return*/, promise];
}
});
});
};
RemoteChrome.prototype.close = function () {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
this.channel.publish(this.TOPIC_END, JSON.stringify({ channelId: this.channelId, client: true }));
this.channel.end();
return [2 /*return*/];
});
});
};
return RemoteChrome;
}());
exports.default = RemoteChrome;
//# sourceMappingURL=remote.js.map