tspace-nfs/build/lib/server/queue.js

tspace-nfs is a Network File System (NFS) and provides both server and client capabilities for accessing files over a network.

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Queue = void 0;
class Queue {
    constructor(concurrency = 1) {
        this.queue = [];
        this.concurrency = concurrency;
        this.activeJobs = 0;
    }
    add(job) {
        this.queue.push(job);
        this._processQueue();
    }
    _next() {
        return __awaiter(this, void 0, void 0, function* () {
            this.activeJobs -= 1;
            yield this._processQueue();
        });
    }
    _processQueue() {
        return __awaiter(this, void 0, void 0, function* () {
            if (this.activeJobs >= this.concurrency || this.queue.length === 0) {
                return;
            }
            const job = this.queue.shift();
            if (job == null) {
                return yield this._next();
            }
            this.activeJobs += 1;
            try {
                yield job();
                return yield this._next();
            }
            catch (error) {
                return yield this._next();
            }
        });
    }
}
exports.Queue = Queue;
exports.default = Queue;
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