amqp-client-type-fix/lib/mjs/amqp-consumer.js

AMQP 0-9-1 client, both for browsers (WebSocket) and node (TCP Socket)

import { AMQPError } from './amqp-error.js';
/**
 * A consumer, subscribed to a queue
 */
export class AMQPConsumer {
    /**
     * @param channel - the consumer is created on
     * @param tag - consumer tag
     * @param onMessage - callback executed when a message arrive
     */
    constructor(channel, tag, onMessage) {
        this.closed = false;
        this.channel = channel;
        this.tag = tag;
        this.onMessage = onMessage;
    }
    /**
     * Wait for the consumer to finish.
     * @param [timeout] wait for this many milliseconds and then return regardless
     * @return Fulfilled when the consumer/channel/connection is closed by the client. Rejected if the timeout is hit.
     */
    wait(timeout) {
        if (this.closedError)
            return Promise.reject(this.closedError);
        if (this.closed)
            return Promise.resolve();
        return new Promise((resolve, reject) => {
            this.resolveWait = resolve;
            this.rejectWait = reject;
            if (timeout) {
                const onTimeout = () => reject(new AMQPError("Timeout", this.channel.connection));
                this.timeoutId = setTimeout(onTimeout, timeout);
            }
        });
    }
    /**
     * Cancel/abort/stop the consumer. No more messages will be deliviered to the consumer.
     * Note that any unacked messages are still unacked as they belong to the channel and not the consumer.
     */
    cancel() {
        return this.channel.basicCancel(this.tag);
    }
    /**
     * @ignore
     * @param [err] - why the consumer was closed
     */
    setClosed(err) {
        this.closed = true;
        if (err)
            this.closedError = err;
        if (this.timeoutId)
            clearTimeout(this.timeoutId);
        if (err) {
            if (this.rejectWait)
                this.rejectWait(err);
        }
        else {
            if (this.resolveWait)
                this.resolveWait();
        }
    }
}
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