@nestjstools/messaging-rabbitmq-extension
Version:
Extension to handle messages and dispatch them over AMQP protocol
67 lines • 3.31 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.RabbitmqMessagingConsumer = void 0;
const amqp_channel_1 = require("../channel/amqp.channel");
const const_1 = require("../const");
const messaging_1 = require("@nestjstools/messaging");
const common_1 = require("@nestjs/common");
const messaging_2 = require("@nestjstools/messaging");
const rabbitmq_migrator_1 = require("../migrator/rabbitmq.migrator");
const buffer_1 = require("buffer");
let RabbitmqMessagingConsumer = class RabbitmqMessagingConsumer {
constructor(rabbitMqMigrator) {
this.rabbitMqMigrator = rabbitMqMigrator;
this.channel = undefined;
}
async consume(dispatcher, channel) {
await this.rabbitMqMigrator.run(channel);
this.channel = channel;
channel.connection.createConsumer({
queue: channel.config.queue,
queueOptions: { durable: true },
requeue: false,
}, async (msg) => {
const rabbitMqMessage = msg;
let message = rabbitMqMessage.body;
if (buffer_1.Buffer.isBuffer(message)) {
const messageContent = message.toString();
message = JSON.parse(messageContent);
}
const routingKey = rabbitMqMessage.headers?.[const_1.RABBITMQ_HEADER_ROUTING_KEY] ??
rabbitMqMessage.routingKey;
dispatcher.dispatch(new messaging_1.ConsumerMessage(message, routingKey));
});
return Promise.resolve();
}
async onError(errored, channel) {
if (channel.config.deadLetterQueueFeature) {
const publisher = channel.connection.createPublisher();
const envelope = {
headers: {
'messaging-routing-key': errored.dispatchedConsumerMessage.routingKey,
},
exchange: 'dead_letter.exchange',
routingKey: `${channel.config.queue}_dead_letter`,
};
await publisher.send(envelope, errored.dispatchedConsumerMessage.message);
await publisher.close();
}
return Promise.resolve();
}
};
exports.RabbitmqMessagingConsumer = RabbitmqMessagingConsumer;
exports.RabbitmqMessagingConsumer = RabbitmqMessagingConsumer = __decorate([
(0, common_1.Injectable)(),
(0, messaging_2.MessageConsumer)(amqp_channel_1.AmqpChannel),
__metadata("design:paramtypes", [rabbitmq_migrator_1.RabbitmqMigrator])
], RabbitmqMessagingConsumer);
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