dt-common-device
Version:
A secure and robust device management library for IoT applications
249 lines (248 loc) • 12.1 kB
JavaScript
"use strict";
var __esDecorate = (this && this.__esDecorate) || function (ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {
function accept(f) { if (f !== void 0 && typeof f !== "function") throw new TypeError("Function expected"); return f; }
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var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});
var _, done = false;
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for (var p in contextIn) context[p] = p === "access" ? {} : contextIn[p];
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context.addInitializer = function (f) { if (done) throw new TypeError("Cannot add initializers after decoration has completed"); extraInitializers.push(accept(f || null)); };
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if (_ = accept(result.init)) initializers.unshift(_);
}
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else descriptor[key] = _;
}
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if (target) Object.defineProperty(target, contextIn.name, descriptor);
done = true;
};
var __runInitializers = (this && this.__runInitializers) || function (thisArg, initializers, value) {
var useValue = arguments.length > 2;
for (var i = 0; i < initializers.length; i++) {
value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);
}
return useValue ? value : void 0;
};
var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.EventProcessingService = void 0;
const typedi_1 = require("typedi");
const DeviceEventHandler_1 = require("./DeviceEventHandler");
const config_1 = require("../config/config");
const EventHandlerOrchestrator_1 = require("./EventHandlerOrchestrator");
const typedi_2 = __importDefault(require("typedi"));
let EventProcessingService = (() => {
let _classDecorators = [(0, typedi_1.Service)()];
let _classDescriptor;
let _classExtraInitializers = [];
let _classThis;
var EventProcessingService = _classThis = class {
constructor(deviceEventTransformerFactory) {
this.deviceEventTransformerFactory = deviceEventTransformerFactory;
this.deviceHandlers = new Map();
this.handlerOrchestrator = new EventHandlerOrchestrator_1.EventHandlerOrchestrator();
// Use dependency injection instead of creating new instance
this.deviceEventHandler = typedi_2.default.get(DeviceEventHandler_1.DeviceEventHandler);
this.logger = (0, config_1.getConfig)().LOGGER;
this.initializeDeviceHandlers();
this.initializeHandlers();
}
/**
* Initialize device-specific handlers - to be implemented by subclasses
*/
initializeDeviceHandlers() {
this.deviceHandlers = new Map();
// Subclasses should override this method to add their specific handlers
}
/**
* Initialize the handler hierarchy - to be implemented by subclasses
*/
initializeHandlers() {
try {
// Register generic handler for common events - reuse existing instance
this.handlerOrchestrator.registerHandlers([
this.deviceEventHandler, // Use existing instance instead of creating new one
]);
this.logger.info("Base event handlers initialized successfully");
}
catch (error) {
this.logger.error("EventProcessingService: initializeHandlers Error", error);
}
}
/**
* Get device-specific handler based on connection provider
*/
getDeviceHandler(connectionProvider) {
const normalizedProvider = connectionProvider.toLowerCase();
return this.deviceHandlers.get(normalizedProvider) || null;
}
/**
* Transform device event using EventTransformerFactory
*/
async transformDeviceEventWithTransformer(connectionProvider, rawData) {
try {
// Create transformer for the connection provider
const transformer = this.deviceEventTransformerFactory.createTransformer(connectionProvider, rawData);
if (!transformer) {
this.logger.warn(`No transformer found for connection provider: ${connectionProvider}`);
return null;
}
// Execute the transformation pipeline
const transformedEvents = await transformer.executeTransformation();
if (transformedEvents.length === 0) {
this.logger.warn(`No events transformed for connection provider: ${connectionProvider}`);
return null;
}
// Return the first transformed event (or handle multiple events as needed)
return transformedEvents[0];
}
catch (error) {
this.logger.error(`Error transforming event for ${connectionProvider}:`, error);
return null;
}
}
/**
* Transform raw event data to DeviceEvent format using EventTransformer
*/
async transformToDeviceEvent(connectionProvider, rawData) {
try {
// Use the transformer-based approach
const deviceEvent = await this.transformDeviceEventWithTransformer(connectionProvider, rawData);
if (!deviceEvent) {
this.logger.warn("Failed to transform event data using transformer", {
connectionProvider,
rawData,
});
return null;
}
this.logger.info("Transformed event using EventTransformer", {
connectionProvider,
originalEventName: deviceEvent.originalEventName,
transformedEventName: deviceEvent.eventName,
deviceId: deviceEvent.deviceId,
});
return deviceEvent;
}
catch (error) {
this.logger.error("EventProcessingService: transformToDeviceEvent Error", error);
return null;
}
}
/**
* Process a single event from device.event.controller
*/
async processEvent(connectionProvider, rawData) {
try {
this.logger.info("EventProcessingService: Processing event", {
connectionProvider,
eventName: rawData.eventName ?? rawData.type,
});
// Transform raw data to DeviceEvent using EventTransformer
const deviceEvent = await this.transformToDeviceEvent(connectionProvider, rawData);
if (!deviceEvent) {
this.logger.warn("Failed to transform event data", {
connectionProvider,
rawData,
});
return;
}
// Get device-specific handler
const deviceHandler = this.getDeviceHandler(connectionProvider);
if (!deviceHandler) {
this.logger.warn("No device handler found for provider", {
connectionProvider,
});
return;
}
// Process with GenericEventHandler first (common logic)
if (this.deviceEventHandler.canHandle(deviceEvent.eventName)) {
try {
await this.deviceEventHandler.handleEvent(deviceEvent);
this.logger.info("Event processed by GenericEventHandler");
}
catch (error) {
this.logger.error("EventProcessingService: GenericEventHandler Error", error);
}
}
// Process with device-specific handler
if (deviceHandler.canHandle(deviceEvent.eventName)) {
try {
await deviceHandler.onEvent(deviceEvent);
this.logger.info("Event processed by device-specific handler", {
handler: deviceHandler.constructor.name,
});
}
catch (error) {
this.logger.error("EventProcessingService: Device-specific handler Error", error);
}
}
else {
this.logger.warn("Device handler cannot handle event", {
handler: deviceHandler.constructor.name,
eventName: deviceEvent.eventName,
});
}
}
catch (error) {
this.logger.error("EventProcessingService: processEvent Error", error);
throw error;
}
}
/**
* Process a single event (legacy method for DeviceEvent objects)
*/
async processEventLegacy(event) {
try {
this.logger.info("EventProcessingService: Processing legacy event", {
eventName: event.eventName,
});
await this.handlerOrchestrator.processEvent(event);
}
catch (error) {
this.logger.error("EventProcessingService: processEventLegacy Error", error);
throw error;
}
}
/**
* Process multiple events
*/
async processEvents(events) {
try {
this.logger.info("EventProcessingService: Processing multiple events", {
count: events.length,
});
await this.handlerOrchestrator.processEvents(events);
}
catch (error) {
this.logger.error("EventProcessingService: processEvents Error", error);
throw error;
}
}
};
__setFunctionName(_classThis, "EventProcessingService");
(() => {
const _metadata = typeof Symbol === "function" && Symbol.metadata ? Object.create(null) : void 0;
__esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name, metadata: _metadata }, null, _classExtraInitializers);
EventProcessingService = _classThis = _classDescriptor.value;
if (_metadata) Object.defineProperty(_classThis, Symbol.metadata, { enumerable: true, configurable: true, writable: true, value: _metadata });
__runInitializers(_classThis, _classExtraInitializers);
})();
return EventProcessingService = _classThis;
})();
exports.EventProcessingService = EventProcessingService;