/
Queue.js
80 lines (72 loc) · 1.42 KB
/
Queue.js
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/**
* Queue class
*/
export default class Queue {
/**
* Queue constructor
* @param dbAdapter
*/
constructor(dbAdapter) {
this.adapter = dbAdapter;
}
/**
* Enqueue method
* @param item
*/
enqueue(item) {
this.adapter.addItem(item);
}
/**
* enqueue failed items
*/
failedJobsEnqueue(){
this.adapter.addFailedItems();
}
/**
* Failed Job Enqueue method
* @param item
*/
failedJobEnqueue(item) {
this.adapter.addFailedItem(item);
}
/**
* Dequeue method
*/
dequeue() {
if (this.isEmpty()) {
throw new Error('Queue is empty');
}
const returnElement = this.adapter.getTopItem();
this.adapter.remove(returnElement.job.id);
}
/**
* Peek method to get top item
*/
peek() {
if (this.isEmpty()) {
throw new Error('Queue is empty');
}
return this.adapter.getTopItem();
}
/**
* Method to get size of allQueues
* @returns {void|number}
*/
getSize() {
return this.adapter.getLength();
}
/**
* Method to check for empty allQueues
* @returns {boolean}
*/
isEmpty() {
return this.getSize() === 0;
}
/**
* Method to get items
* @returns {void|*[]}
*/
getItems() {
return this.adapter.getAllItems();
}
}