Initial commit

Initial commit before implementing the multi-broker feature

.gitignore

@@ -0,0 +1,3 @@
+lds/node_modules
+backend/node_modules
+app/JAM/node_modules

backend/App.js

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+"use strict";
+exports.__esModule = true;
+var BackEndService_1 = require("./BackEndService");
+BackEndService_1.clientConnection();

backend/App.ts

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+import {clientConnection} from "./BackEndService";
+
+clientConnection();

backend/BackEndService.js

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+"use strict";
+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 (_) 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 };
+    }
+};
+exports.__esModule = true;
+exports.clientConnection = exports.lamqttBackEnd = void 0;
+var backend_1 = require("./la-mqtt/backend/backend");
+exports.lamqttBackEnd = new backend_1.SpatialMQTTBackEnd('', '', 'ws://127.0.0.1:9001/', 9001);
+function clientConnection() {
+    return __awaiter(this, void 0, void 0, function () {
+        return __generator(this, function (_a) {
+            switch (_a.label) {
+                case 0: return [4 /*yield*/, exports.lamqttBackEnd.start()];
+                case 1:
+                    _a.sent();
+                    return [2 /*return*/];
+            }
+        });
+    });
+}
+exports.clientConnection = clientConnection;

backend/BackEndService.ts

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+import {SpatialMQTTBackEnd} from "./la-mqtt/backend/backend";
+export const lamqttBackEnd = new SpatialMQTTBackEnd('', '', 'ws://127.0.0.1:9001/', 9001);
+
+export async function clientConnection() {
+    await lamqttBackEnd.start();
+}
+

backend/la-mqtt/backend/backend.js

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+"use strict";
+var __extends = (this && this.__extends) || (function () {
+    var extendStatics = function (d, b) {
+        extendStatics = Object.setPrototypeOf ||
+            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+            function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
+        return extendStatics(d, b);
+    };
+    return function (d, b) {
+        extendStatics(d, b);
+        function __() { this.constructor = d; }
+        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+    };
+})();
+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 (_) 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 };
+    }
+};
+exports.__esModule = true;
+exports.SpatialMQTTBackEnd = void 0;
+var messages_1 = require("../common/messages");
+var client_1 = require("../common/client");
+var persister_1 = require("./persister");
+var mempersister_1 = require("./mempersister");
+var geoprocesser_1 = require("./geoprocesser");
+var ipersister_1 = require("./ipersister");
+var SpatialMQTTBackEnd = /** @class */ (function (_super) {
+    __extends(SpatialMQTTBackEnd, _super);
+    function SpatialMQTTBackEnd(username, password, host, port) {
+        var _this = _super.call(this, username, password, host, port, SpatialMQTTBackEnd.DEFAULT_NAME) || this;
+        _this.persisterType = ipersister_1.PersisterType.MONGODB;
+        // @ts-ignore
+        if (_this.persisterType == ipersister_1.PersisterType.MEMORY)
+            _this.persister = new mempersister_1.MemPersister();
+        else
+            _this.persister = new persister_1.Persister(SpatialMQTTBackEnd.STORAGE_NAME);
+        //this.logWatcher=new MosquittoWatcher('/Users/marcodifelice/Documents/Lavoro/ProgettiSW/SpatialMQTT/src/backend','log.txt');
+        _this.geoProcessor = new geoprocesser_1.GeoProcessor(_this.persister, _this);
+        // @ts-ignore
+        _this.historyGeofence = new Map();
+        // @ts-ignore
+        _this.historyNotificationSent = new Map();
+        _this.verboseMode = true;
+        return _this;
+    }
+    SpatialMQTTBackEnd.prototype.start = function () {
+        return __awaiter(this, void 0, void 0, function () {
+            var res;
+            return __generator(this, function (_a) {
+                switch (_a.label) {
+                    case 0: return [4 /*yield*/, this.connect()];
+                    case 1:
+                        res = _a.sent();
+                        console.log("CONNECTION RESULT: ", res);
+                        if (!(res == true)) return [3 /*break*/, 6];
+                        this.setCallback(this);
+                        return [4 /*yield*/, this.subscribe(messages_1.MQTTSpatialMessages.TOPIC_PUBLISH_POSITION)];
+                    case 2:
+                        _a.sent();
+                        return [4 /*yield*/, this.subscribe(messages_1.MQTTSpatialMessages.TOPIC_PUBLISH_GEOFENCE)];
+                    case 3:
+                        _a.sent();
+                        return [4 /*yield*/, this.subscribe(messages_1.MQTTSpatialMessages.TOPIC_PUBLISH_SUBSCRIPTION)];
+                    case 4:
+                        _a.sent();
+                        return [4 /*yield*/, this.persister.connect()];
+                    case 5:
+                        _a.sent();
+                        _a.label = 6;
+                    case 6: return [2 /*return*/];
+                }
+            });
+        });
+    };
+    SpatialMQTTBackEnd.prototype.stop = function () {
+        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();
+                        return [4 /*yield*/, this.persister.disconnect()];
+                    case 2:
+                        _a.sent();
+                        //this.logWatcher.stop();
+                        console.log("Connection to DB closed");
+                        return [2 /*return*/];
+                }
+            });
+        });
+    };
+    SpatialMQTTBackEnd.prototype.messageRecv = function (msg) {
+        return __awaiter(this, void 0, void 0, function () {
+            return __generator(this, function (_a) {
+                switch (_a.label) {
+                    case 0:
+                        if (!(msg.topic == messages_1.MQTTSpatialMessages.TOPIC_PUBLISH_POSITION)) return [3 /*break*/, 2];
+                        return [4 /*yield*/, this.handlePositionUpdate(msg.message)];
+                    case 1:
+                        _a.sent();
+                        return [3 /*break*/, 6];
+                    case 2:
+                        if (!(msg.topic == messages_1.MQTTSpatialMessages.TOPIC_PUBLISH_GEOFENCE)) return [3 /*break*/, 4];
+                        return [4 /*yield*/, this.handleGeofenceUpdate(msg.message)];
+                    case 3:
+                        _a.sent();
+                        return [3 /*break*/, 6];
+                    case 4:
+                        if (!(msg.topic == messages_1.MQTTSpatialMessages.TOPIC_PUBLISH_SUBSCRIPTION)) return [3 /*break*/, 6];
+                        return [4 /*yield*/, this.handleSubscriptionUpdate(msg.message)];
+                    case 5:
+                        _a.sent();
+                        _a.label = 6;
+                    case 6: return [2 /*return*/];
+                }
+            });
+        });
+    };
+    // @ts-ignore
+    SpatialMQTTBackEnd.prototype.handlePositionUpdate = function (payload) {
+        return __awaiter(this, void 0, void 0, function () {
+            var objJSON;
+            return __generator(this, function (_a) {
+                switch (_a.label) {
+                    case 0:
+                        if (this.verboseMode == true) {
+                            console.log("[BACKEND] Received UPDATE POSITION: " + payload);
+                        }
+                        objJSON = JSON.parse(payload);
+                        return [4 /*yield*/, this.persister.addUserPosition(objJSON["id"], objJSON["latitude"], objJSON["longitude"])];
+                    case 1:
+                        _a.sent();
+                        if (!(SpatialMQTTBackEnd.GEOFENCE_PERSISTANCE == true)) return [3 /*break*/, 3];
+                        return [4 /*yield*/, this.geoProcessor.processUpdate(objJSON["id"], objJSON["latitude"], objJSON["longitude"])];
+                    case 2:
+                        _a.sent();
+                        _a.label = 3;
+                    case 3: return [2 /*return*/];
+                }
+            });
+        });
+    };
+    // @ts-ignore
+    SpatialMQTTBackEnd.prototype.handleGeofenceUpdate = function (payload) {
+        return __awaiter(this, void 0, void 0, function () {
+            var objJSON, seqNo;
+            return __generator(this, function (_a) {
+                switch (_a.label) {
+                    case 0:
+                        if (this.verboseMode == true) {
+                            console.log("[BACKEND] Received UPDATE GEOFENCE: " + payload);
+                        }
+                        objJSON = JSON.parse(payload);
+                        seqNo = this.historyGeofence.get(objJSON["id"]);
+                        if (seqNo == undefined)
+                            seqNo = 1;
+                        else
+                            seqNo += 1;
+                        this.historyGeofence.set(objJSON["id"], seqNo);
+                        console.log("SEQUENTIAL:", this.historyGeofence.get(objJSON["id"]));
+                        return [4 /*yield*/, this.persister.addGeofence(objJSON["topicGeofence"], objJSON["id"], objJSON["latitude"], objJSON["longitude"], objJSON["radius"], objJSON["message"])];
+                    case 1:
+                        _a.sent();
+                        return [2 /*return*/];
+                }
+            });
+        });
+    };
+    // @ts-ignore
+    SpatialMQTTBackEnd.prototype.handleSubscriptionUpdate = function (payload) {
+        return __awaiter(this, void 0, void 0, function () {
+            var objJSON;
+            return __generator(this, function (_a) {
+                switch (_a.label) {
+                    case 0:
+                        if (this.verboseMode == true) {
+                            console.log("[BACKEND] Received SUBSCRIPTION: " + payload);
+                        }
+                        objJSON = JSON.parse(payload);
+                        return [4 /*yield*/, this.newSubscribeEvent(objJSON["id"], objJSON["topic"])];
+                    case 1:
+                        _a.sent();
+                        return [2 /*return*/];
+                }
+            });
+        });
+    };
+    // @ts-ignore
+    SpatialMQTTBackEnd.prototype.newSubscribeEvent = function (clientId, topic) {
+        return __awaiter(this, void 0, void 0, function () {
+            return __generator(this, function (_a) {
+                switch (_a.label) {
+                    case 0:
+                        //if (this.verboseMode==true) {
+                        console.log("[BACKEND] New subscription " + clientId + " " + topic);
+                        //}
+                        return [4 /*yield*/, this.persister.addSubscription(clientId, topic)];
+                    case 1:
+                        //}
+                        _a.sent();
+                        return [2 /*return*/];
+                }
+            });
+        });
+    };
+    SpatialMQTTBackEnd.prototype.advertiseClient = function (geofenceId, topic, clientId, message) {
+        return __awaiter(this, void 0, void 0, function () {
+            var correctTopic, signature, currentSeqNo, lastSeqNo;
+            return __generator(this, function (_a) {
+                switch (_a.label) {
+                    case 0:
+                        correctTopic = topic + "_" + clientId;
+                        if (!(SpatialMQTTBackEnd.NOTIFY_ONLY_ONCE == true)) return [3 /*break*/, 3];
+                        signature = geofenceId + "_" + clientId;
+                        currentSeqNo = this.historyNotificationSent.get(signature);
+                        console.log("CURRENT SEQUEL NO:", currentSeqNo);
+                        lastSeqNo = this.historyGeofence.get(geofenceId);
+                        console.log("LAST SEQUEL NO:", lastSeqNo);
+                        if (!((currentSeqNo == undefined) || (currentSeqNo < lastSeqNo))) return [3 /*break*/, 2];
+                        this.historyNotificationSent.set(signature, lastSeqNo);
+                        if (this.verboseMode == true)
+                            console.log("[BACKEND] Publish GEO_ADVERTISEMENT to: " + clientId + " topic: " + correctTopic);
+                        //await this.publish(topic, message);
+                        //HHH
+                        return [4 /*yield*/, this.publish(correctTopic, message)];
+                    case 1:
+                        //await this.publish(topic, message);
+                        //HHH
+                        _a.sent();
+                        _a.label = 2;
+                    case 2: return [3 /*break*/, 5];
+                    case 3:
+                        if (this.verboseMode == true)
+                            console.log("[BACKEND] Publish GEO_ADVERTISEMENT to: " + clientId + " topic: " + correctTopic);
+                        //HHH
+                        return [4 /*yield*/, this.publish(correctTopic, message)];
+                    case 4:
+                        //HHH
+                        _a.sent();
+                        _a.label = 5;
+                    case 5: return [2 /*return*/];
+                }
+            });
+        });
+    };
+    SpatialMQTTBackEnd.DEFAULT_NAME = "MQTT_BACKEND";
+    SpatialMQTTBackEnd.STORAGE_NAME = "smqtt";
+    //HHH
+    SpatialMQTTBackEnd.GEOFENCE_PERSISTANCE = true;
+    SpatialMQTTBackEnd.NOTIFY_ONLY_ONCE = true;
+    return SpatialMQTTBackEnd;
+}(client_1.MQTTClient));
+exports.SpatialMQTTBackEnd = SpatialMQTTBackEnd;