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35 lines
1.0 KiB
35 lines
1.0 KiB
"use strict";
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const DoublyLinkedList = require("./DoublyLinkedList");
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const Deque = require("./Deque");
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/**
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* Sort of a internal queue for holding the waiting
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* resource requets for a given "priority".
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* Also handles managing timeouts rejections on items (is this the best place for this?)
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* This is the last point where we know which queue a resourceRequest is in
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*
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*/
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class Queue extends Deque {
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/**
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* Adds the obj to the end of the list for this slot
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* we completely override the parent method because we need access to the
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* node for our rejection handler
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* @param {any} resourceRequest [description]
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*/
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push(resourceRequest) {
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const node = DoublyLinkedList.createNode(resourceRequest);
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resourceRequest.promise.catch(this._createTimeoutRejectionHandler(node));
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this._list.insertEnd(node);
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}
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_createTimeoutRejectionHandler(node) {
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return reason => {
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if (reason.name === "TimeoutError") {
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this._list.remove(node);
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}
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};
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}
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}
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module.exports = Queue;
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