@nestjstools/microservices-rabbitmq
Version:
Transport layer for NestJS Microservices with more configurations for RabbitMQ
70 lines • 3.17 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);
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.AmqpTransport = void 0;
const microservices_1 = require("@nestjs/microservices");
const common_1 = require("@nestjs/common");
const rabbitmq_client_1 = require("rabbitmq-client");
const const_1 = require("../const");
let AmqpTransport = class AmqpTransport extends microservices_1.Server {
options;
client;
constructor(options) {
super();
this.options = options;
this.options.avoidNoHandlerError = options.avoidNoHandlerError ?? false;
this.client = new rabbitmq_client_1.Connection(this.options.url);
}
on(event, callback) {
throw new Error('Unimplemented');
}
unwrap() {
throw new Error('Unimplemented');
}
async listen(callback) {
await this.initialize();
this.client.createConsumer({ queue: this.options.queue, queueOptions: { durable: true } }, async (msg) => {
let message = msg.body;
if (Buffer.isBuffer(message)) {
message = JSON.parse(msg.body);
}
const headers = msg.headers;
const routingKey = headers[const_1.RoutingKeyHeader] ?? msg.routingKey;
const handler = this.messageHandlers.get(routingKey);
if (this.options.avoidNoHandlerError || handler === undefined) {
this.logger.error(`Handler for routingKey ${msg.routingKey} does not exist`);
return;
}
handler(message);
});
callback();
}
async close() {
await this.client.close();
}
async initialize() {
if (!this.options.autoCreate) {
return Promise.resolve();
}
await this.client.exchangeDeclare({ durable: true, exchange: this.options.exchange, type: this.options.exchangeType });
await this.client.queueDeclare({ queue: this.options.queue, durable: true });
for (const bindingKey of this.options.bindingKeys) {
await this.client.queueBind({ routingKey: bindingKey, queue: this.options.queue, exchange: this.options.exchange });
}
return Promise.resolve();
}
};
exports.AmqpTransport = AmqpTransport;
exports.AmqpTransport = AmqpTransport = __decorate([
(0, common_1.Injectable)(),
__metadata("design:paramtypes", [Object])
], AmqpTransport);
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