kafka-nestjs/dist/services/kafka-producer.service.js

A structured Kafka integration for NestJS inspired by BullMQ, offering decorators, modular configuration, and a scalable consumer/producer architecture.

"use strict";
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 KafkaProducerService_1;
Object.defineProperty(exports, "__esModule", { value: true });
exports.KafkaProducerService = void 0;
const common_1 = require("@nestjs/common");
const kafkajs_1 = require("kafkajs");
const kafka_constants_1 = require("../constants/kafka.constants");
let KafkaProducerService = KafkaProducerService_1 = class KafkaProducerService {
    constructor(createPartitioner = kafkajs_1.Partitioners.DefaultPartitioner, options) {
        this.createPartitioner = createPartitioner;
        this.options = options;
        this.logger = new common_1.Logger(KafkaProducerService_1.name);
        this.kafka = new kafkajs_1.Kafka(this.options);
        this.producer = this.kafka.producer({
            createPartitioner: this.createPartitioner,
        });
    }
    async onModuleInit() {
        await this.producer.connect();
        this.logger.log({
            message: 'Kafka producer connected',
            info: {
                clientId: this.options.clientId,
                brokers: this.options.brokers,
            },
        }, this.onModuleInit.name);
    }
    async send(payload) {
        await this.producer.send(payload);
    }
    async onModuleDestroy() {
        if (this.producer) {
            await this.producer.disconnect();
            this.logger.log({
                message: 'Kafka producer disconnected',
                info: {
                    clientId: this.options.clientId,
                    brokers: this.options.brokers,
                },
            }, this.onModuleDestroy.name);
        }
    }
};
exports.KafkaProducerService = KafkaProducerService;
exports.KafkaProducerService = KafkaProducerService = KafkaProducerService_1 = __decorate([
    (0, common_1.Injectable)(),
    __param(0, (0, common_1.Optional)()),
    __param(0, (0, common_1.Inject)('KAFKA_PARTITIONER')),
    __param(1, (0, common_1.Inject)(kafka_constants_1.KAFKA_MODULE_OPTIONS)),
    __metadata("design:paramtypes", [Function, Object])
], KafkaProducerService);
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