@iotize/device-client.js
Version:
IoTize Device client for Javascript
180 lines (179 loc) • 8.01 kB
JavaScript
"use strict";
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 = 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 });
var rxjs_1 = require("rxjs");
var operators_1 = require("rxjs/operators");
var iotize_device_1 = require("../device/iotize-device");
var logger_1 = require("../logger");
exports.DEFAULT_KEEP_ALIVE_PERIOD_MS = 5000;
var logger = logger_1.default('KeepAliveEngine');
Object.defineProperty(iotize_device_1.IoTizeDevice.prototype, "keepAlive", {
get: function () {
if (!this._keepAliveTask) {
logger.debug("Create keep alive engine");
this._keepAliveTask = new KeepAliveEngine(this, {
period: exports.DEFAULT_KEEP_ALIVE_PERIOD_MS
});
}
return this._keepAliveTask;
},
enumerable: false,
configurable: true
});
// IoTizeDevice.prototype.keepAlive = function (this: IoTizeDevice, enabled: boolean, options?: KeepAliveOptions): Observable<KeepAliveEvent> {
// return this._keepAliveTask.events;
// }
iotize_device_1.IoTizeDevice.prototype.setupKeepAliveFromConfig = function () {
return __awaiter(this, void 0, void 0, function () {
var periodInSeconds;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.service.interface.getHostInactivityPeriod()];
case 1:
periodInSeconds = (_a.sent()).body();
this.keepAlive.options.period = periodInSeconds * 1000;
this.keepAlive.start();
return [2 /*return*/];
}
});
});
};
var KeepAliveEngine = /** @class */ (function () {
function KeepAliveEngine(tap, options) {
var _this = this;
this.tap = tap;
this.options = options;
this._lastResponseTime = 0;
this._isStopped = true;
this._events = new rxjs_1.Subject();
logger.debug('new KeepAliveEngine()');
this.tap.client.addInterceptor(function (req, handle) {
return handle.handle(req)
.pipe(operators_1.tap({
next: function () {
logger.debug('update last response time', _this._lastResponseTime, '=>', new Date().getTime());
_this._lastResponseTime = new Date().getTime();
}
}));
});
}
Object.defineProperty(KeepAliveEngine.prototype, "events", {
get: function () {
return this._events.asObservable();
},
enumerable: true,
configurable: true
});
Object.defineProperty(KeepAliveEngine.prototype, "running", {
get: function () {
return !this._isStopped;
},
enumerable: true,
configurable: true
});
KeepAliveEngine.prototype.start = function () {
this._isStopped = false;
if (!this.timeoutId) {
this._setupNextTimeout(0);
}
this._events.next({
type: 'start'
});
};
KeepAliveEngine.prototype.stop = function () {
this._isStopped = true;
if (this.timeoutId) {
clearTimeout(this.timeoutId);
this.timeoutId = undefined;
}
this._events.next({
type: 'stop'
});
};
KeepAliveEngine.prototype._setupNextTimeout = function (timeoutMs) {
var _this = this;
if (this._isStopped) {
return;
}
this._events.next({
type: 'rescheduleKeepAlive',
timeout: timeoutMs
});
this.timeoutId = setTimeout(function () { return __awaiter(_this, void 0, void 0, function () {
var remainingTime, err_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!this.tap.isConnected()) return [3 /*break*/, 6];
remainingTime = this.options.period - elapsedTime(this._lastResponseTime);
if (!(remainingTime > 0)) return [3 /*break*/, 1];
logger.debug('Reschedule keep alive in ', remainingTime);
this._setupNextTimeout(remainingTime);
return [3 /*break*/, 6];
case 1:
logger.debug('Running keep alive');
_a.label = 2;
case 2:
_a.trys.push([2, 4, , 5]);
this._events.next({
type: 'tick'
});
return [4 /*yield*/, this.tap.service.interface.keepAlive()];
case 3:
_a.sent();
return [3 /*break*/, 5];
case 4:
err_1 = _a.sent();
this._events.next({
type: 'error',
error: err_1
});
return [3 /*break*/, 5];
case 5:
this._setupNextTimeout(this.options.period);
_a.label = 6;
case 6: return [2 /*return*/];
}
});
}); }, timeoutMs);
};
return KeepAliveEngine;
}());
exports.KeepAliveEngine = KeepAliveEngine;
function elapsedTime(time) {
return new Date().getTime() - time;
}