@bbc/sofie-server-core-integration/dist/lib/queue.js

Library for connecting to Core

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Queue = void 0;
class Queue {
    _isRunning = false;
    _queue = [];
    async putOnQueue(fcn) {
        return new Promise((resolve, reject) => {
            this._queue.push({
                fcn,
                resolve,
                reject,
            });
            setTimeout(() => {
                this.checkQueue();
            }, 0);
        });
    }
    checkQueue() {
        if (!this._isRunning) {
            const nextOnQueue = this._queue.shift();
            if (nextOnQueue) {
                this._isRunning = true;
                try {
                    nextOnQueue.fcn().then((result) => {
                        nextOnQueue.resolve(result);
                        this._isRunning = false;
                        this.checkQueue();
                    }, (error) => {
                        nextOnQueue.reject(error);
                        this._isRunning = false;
                        this.checkQueue();
                    });
                }
                catch (error) {
                    nextOnQueue.reject(error);
                    this._isRunning = false;
                    this.checkQueue();
                }
            }
        }
    }
}
exports.Queue = Queue;
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