@iotile/iotile-device
Version:
A typescript library for interfacing with IOTile BLE devices
161 lines • 7.69 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 Errors = require("../common/error-space");
var IOTileTypes = require("../common/iotile-types");
var ring_buffer_1 = require("../common/ring-buffer");
var IOTileTracingInterface = /** @class */ (function () {
function IOTileTracingInterface() {
this.removeTracingHandler = null;
this.receivedData = new ring_buffer_1.RingBuffer(128, true);
this.resolveWaiter = null;
this.rejectWaiter = null;
this.waiterTimer = null;
this.waitLength = 0;
this.waiterTimeout = 1000;
this.channel = undefined;
}
IOTileTracingInterface.prototype.open = function (channel) {
return __awaiter(this, void 0, void 0, function () {
var _a;
var _this = this;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
this.channel = channel;
this.clearWaiter();
this.clearData();
_a = this;
return [4 /*yield*/, this.channel.subscribe(IOTileTypes.IOTileCharacteristic.Tracing, function (value) {
_this.receiveTracingData(value);
})];
case 1:
_a.removeTracingHandler = _b.sent();
return [2 /*return*/];
}
});
});
};
IOTileTracingInterface.prototype.close = function () {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!(this.removeTracingHandler !== null)) return [3 /*break*/, 2];
return [4 /*yield*/, this.removeTracingHandler()];
case 1:
_a.sent();
this.removeTracingHandler = null;
_a.label = 2;
case 2:
if (this.rejectWaiter != null) {
this.rejectWaiter(new Errors.ConnectionError("Tracing interface was closed."));
}
this.clearWaiter();
this.clearData();
return [2 /*return*/];
}
});
});
};
IOTileTracingInterface.prototype.receiveTracingData = function (value) {
this.receivedData.push(value);
if (this.resolveWaiter != null && this.waitLength && this.receivedData.count >= this.waitLength) {
this.resolveWaiter(this.receivedData.pop(this.waitLength));
this.clearWaiter();
}
else if (this.resolveWaiter != null) {
//We received more data, so push our watchdog timeout further down the line
this.startWatchdogTimer();
}
};
IOTileTracingInterface.prototype.startWatchdogTimer = function () {
var _this = this;
if (this.rejectWaiter == null) {
return;
}
if (this.waiterTimer != null) {
clearTimeout(this.waiterTimer);
}
this.waiterTimer = window.setTimeout(function () {
if (_this.rejectWaiter != null) {
_this.rejectWaiter(new Errors.StreamingTimeoutError("Timeout waiting for tracing data."));
_this.clearWaiter();
}
}, this.waiterTimeout);
};
IOTileTracingInterface.prototype.clearWaiter = function () {
this.rejectWaiter = null;
this.resolveWaiter = null;
if (this.waiterTimer != null) {
clearTimeout(this.waiterTimer);
}
this.waiterTimer = null;
this.waitLength = null;
};
/**
* Wait for a given number of bytes to be received by the tracing interface.
*
* You can only have a single wait waiting for data at a time. Attempting
* to call waitForData again before the first promise resolves will result
* in a rejected promise with OperationAtInvalidTimeError.
*/
IOTileTracingInterface.prototype.waitForData = function (numBytes, timeout) {
var _this = this;
if (timeout === void 0) { timeout = 1000; }
if (this.resolveWaiter != null) {
throw new Errors.OperationAtInvalidTimeError("You can only have one waiter waiting for tracing data at a time.", IOTileTypes.AdapterState.Connected, "Internal Tracing Error.");
}
return new Promise(function (resolve, reject) {
if (numBytes <= _this.receivedData.count) {
resolve(_this.receivedData.pop(numBytes));
return;
}
_this.waitLength = numBytes;
_this.resolveWaiter = resolve;
_this.rejectWaiter = reject;
_this.waiterTimeout = timeout;
_this.startWatchdogTimer();
});
};
IOTileTracingInterface.prototype.clearData = function () {
this.receivedData.reset();
};
return IOTileTracingInterface;
}());
exports.IOTileTracingInterface = IOTileTracingInterface;
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