@logistically/events-nestjs
Version:
NestJS integration for @logistically/events v3 - Event-driven architecture with Redis Streams
90 lines (89 loc) • 4.16 kB
JavaScript
;
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var __param = (this && this.__param) || function (paramIndex, decorator) {
return function (target, key) { decorator(target, key, paramIndex); }
};
var EventListenersController_1;
Object.defineProperty(exports, "__esModule", { value: true });
exports.EventListenersController = void 0;
const common_1 = require("@nestjs/common");
const event_metadata_explorer_service_1 = require("./event-metadata-explorer.service");
const event_discovery_service_1 = require("./event-discovery.service");
let EventListenersController = EventListenersController_1 = class EventListenersController {
constructor(metadataExplorer, eventDiscoveryService) {
this.metadataExplorer = metadataExplorer;
this.eventDiscoveryService = eventDiscoveryService;
this.logger = new common_1.Logger(EventListenersController_1.name);
}
/**
* Register event handlers for an instance
* Based on NestJS microservices ListenersController pattern
*/
async registerEventHandlers(instance) {
if (!this.metadataExplorer || !this.eventDiscoveryService) {
this.logger.warn('EventListenersController: Dependencies not available, skipping registration');
return 0;
}
const { instance: serviceInstance } = instance;
const patternHandlers = this.metadataExplorer.explore(serviceInstance);
if (patternHandlers.length === 0) {
return 0;
}
this.logger.debug(`Found ${patternHandlers.length} event handlers for ${serviceInstance.constructor.name}`);
let registeredCount = 0;
for (const handler of patternHandlers) {
try {
await this.registerHandler(serviceInstance, handler);
registeredCount++;
}
catch (error) {
this.logger.error(`Failed to register handler ${handler.methodKey} for ${serviceInstance.constructor.name}:`, error);
}
}
if (registeredCount > 0) {
this.logger.log(`Registered ${registeredCount} event handlers for ${serviceInstance.constructor.name}`);
}
return registeredCount;
}
/**
* Register a single event handler
*/
async registerHandler(instance, handler) {
const { methodKey, eventType, options } = handler;
await this.eventDiscoveryService.registerHandler(instance, methodKey, {
eventType,
priority: options?.priority || 0,
async: options?.async !== false,
retry: options?.retry,
...options
});
}
/**
* Check if an instance has event handlers
*/
hasEventHandlers(instance) {
return this.metadataExplorer?.hasEventHandlers(instance) || false;
}
/**
* Get all event types that an instance handles
*/
getEventTypes(instance) {
return this.metadataExplorer?.getEventTypes(instance) || [];
}
};
exports.EventListenersController = EventListenersController;
exports.EventListenersController = EventListenersController = EventListenersController_1 = __decorate([
(0, common_1.Injectable)(),
__param(0, (0, common_1.Optional)()),
__param(1, (0, common_1.Optional)()),
__metadata("design:paramtypes", [event_metadata_explorer_service_1.EventMetadataExplorer,
event_discovery_service_1.EventDiscoveryService])
], EventListenersController);