@nestjstools/messaging-nats-extension
Version:
Extension to handle messages and dispatch them over Nats
47 lines • 2.21 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;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.NatsMessagingConsumer = void 0;
const nats_channel_1 = require("../channel/nats.channel");
const messaging_1 = require("@nestjstools/messaging");
const common_1 = require("@nestjs/common");
const messaging_2 = require("@nestjstools/messaging");
let NatsMessagingConsumer = class NatsMessagingConsumer {
channel = undefined;
client = undefined;
async consume(dispatcher, channel) {
this.channel = channel;
this.client = await this.channel.client;
this.client.subscribe(channel.config.subscriberName, {
callback: (err, msg) => {
if (err) {
throw new Error(`Nats error ${err.message}`);
}
const headers = msg.headers ?? undefined;
const deserialized = JSON.parse(msg.string());
dispatcher.dispatch(new messaging_1.ConsumerMessage(deserialized, headers?.get('messaging-routing-key') ?? msg.subject));
}
});
return Promise.resolve();
}
async onError(errored, channel) {
return Promise.resolve();
}
async onApplicationShutdown(signal) {
if (this.client) {
await this.client.drain();
await this.client.close();
}
}
};
exports.NatsMessagingConsumer = NatsMessagingConsumer;
exports.NatsMessagingConsumer = NatsMessagingConsumer = __decorate([
(0, common_1.Injectable)(),
(0, messaging_2.MessageConsumer)(nats_channel_1.NatsChannel)
], NatsMessagingConsumer);
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