peanar/dist/amqplib_compat/consumer.js

A job queue for Node.js based on RabbitMQ

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const stream_1 = require("stream");
class Consumer extends stream_1.Readable {
    tag;
    queue;
    _channel;
    constructor(channel, queue) {
        super({
            objectMode: true
        });
        this._channel = channel;
        this.queue = queue;
    }
    get channel() {
        return this._channel;
    }
    set channel(ch) {
        this._channel = ch;
        this.emit('channelChanged', ch);
    }
    async cancel() {
        if (!this.tag) {
            throw new Error('Consumer is not yet started or the consumer tag is not yet set!');
        }
        await this.channel.cancel(this.tag);
        this.removeAllListeners('channelChanged');
        this.handleCancel(false);
    }
    handleDelivery(delivery) {
        const msg = {
            body: delivery.content,
            envelope: {
                deliveryTag: BigInt(delivery.fields.deliveryTag),
                exchange: delivery.fields.exchange,
                routingKey: delivery.fields.routingKey,
                redeliver: delivery.fields.redelivered
            },
            properties: delivery.properties
        };
        if (this.isPaused()) {
            this.once('resume', () => {
                this.push(msg);
            });
        }
        else {
            this.push(msg);
        }
    }
    handleCancel(server) {
        this.emit('cancel', { server });
        this.destroy();
    }
    _read() { }
}
exports.default = Consumer;