osh-js
Version:
OSH javascript Toolkit
207 lines (202 loc) • 9.1 kB
JavaScript
/***************************** BEGIN LICENSE BLOCK ***************************
The contents of this file are subject to the Mozilla Public License, v. 2.0.
If a copy of the MPL was not distributed with this file, You can obtain one
at http://mozilla.org/MPL/2.0/.
Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
for the specific language governing rights and limitations under the License.
Copyright (C) 2015-2022 Georobotix Inc. All Rights Reserved.
Author: Mathieu Dhainaut <mathieu.dhainaut@gmail.com>
******************************* END LICENSE BLOCK ***************************/
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
t[p] = s[p];
}
return t;
};
return __assign.apply(this, arguments);
};
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 };
}
};
import { isDefined } from "../../../utils/Utils";
import { Status } from "../../../connector/Status";
import { EventType } from "../../../event/EventType";
var DataSourceHandler = /** @class */ (function () {
function DataSourceHandler() {
this.context = undefined;
this.topic = undefined;
this.broadcastChannel = undefined;
this.values = [];
// this.version = -Number.MAX_SAFE_INTEGER;
this.version = 0;
this.properties = {
batchSize: 1
};
this.initialized = false;
}
DataSourceHandler.prototype.createContext = function (properties) {
throw Error('Should be overridden');
};
DataSourceHandler.prototype.init = function (properties, topics, dataSourceId) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
this.dataSourceId = dataSourceId;
this.properties = __assign(__assign({}, this.properties), properties);
this.setTopics(topics);
this.context = this.createContext(properties);
this.context.onChangeStatus = this.onChangeStatus.bind(this);
this.context.handleData = this.handleData.bind(this); // bind context to handler
return [4 /*yield*/, this.context.init(this.properties)];
case 1:
_a.sent();
this.initialized = true;
return [2 /*return*/];
}
});
});
};
/**
* Sets the current topic to listen
* @param {Object} topics - the topics to listen
* @param {String} topics.data - the topic to listen
*/
DataSourceHandler.prototype.setTopics = function (topics) {
var topic = topics.data;
if (this.topic === topic) {
return;
}
if (isDefined(this.broadcastChannel)) {
console.warn("Replace old topic ".concat(this.topic, " by ").concat(topic));
this.broadcastChannel.close();
}
this.broadcastChannel = new BroadcastChannel(topic);
this.topic = topic;
};
/**
* Send a change status event into the broadcast channel
* @param {Status} status - the new status
*/
DataSourceHandler.prototype.onChangeStatus = function (status) {
if (status === Status.DISCONNECTED) {
this.flushAll();
}
this.broadcastChannel.postMessage({
type: EventType.STATUS,
status: status,
dataSourceId: this.dataSourceId
});
};
DataSourceHandler.prototype.handleData = function (data) {
// check if data is an array
if (Array.isArray(data)) {
for (var i = 0; i < data.length; i++) {
this.values.push({
data: data[i],
version: this.version
});
}
}
else {
this.values.push({
data: data,
version: this.version
});
}
// because parseData is ASYNC, the protocol can finish before the parsing method. In that case, we have to flushALl data
if (!this.isConnected()) {
this.flushAll();
}
if (this.values.length !== 0 && this.values.length >= this.properties.batchSize) {
this.flush();
}
};
DataSourceHandler.prototype.connect = function (startTime) {
if (startTime === void 0) { startTime = this.properties.startTime; }
this.context.connect();
};
DataSourceHandler.prototype.disconnect = function () {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
return [2 /*return*/, this.context.disconnect()];
});
});
};
DataSourceHandler.prototype.updateProperties = function (properties) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.disconnect()];
case 1:
_a.sent();
this.properties = __assign(__assign({}, this.properties), properties);
this.version++;
this.connect();
return [2 /*return*/];
}
});
});
};
DataSourceHandler.prototype.flushAll = function () {
// while(this.values.length > 0) {
// this.flush();
// }
};
DataSourceHandler.prototype.flush = function () {
var nbElements = this.values.length;
// console.log('push message on ',this.broadcastChannel)
this.broadcastChannel.postMessage({
dataSourceId: this.dataSourceId,
type: EventType.DATA,
values: this.values.splice(0, nbElements)
});
};
DataSourceHandler.prototype.isInitialized = function () {
return this.initialized;
};
DataSourceHandler.prototype.isConnected = function () {
return this.context.isConnected();
};
;
return DataSourceHandler;
}());
export default DataSourceHandler;
//# sourceMappingURL=DataSource.handler.js.map