48 lines
7.1 KiB
JavaScript
48 lines
7.1 KiB
JavaScript
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"use strict";
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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const events_1 = require("events");
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const promisify_event_1 = __importDefault(require("promisify-event"));
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const time_limit_promise_1 = __importDefault(require("time-limit-promise"));
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const REMOTE_REDIRECT_TIMEOUT = 10000;
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const ADDING_CONNECTION_WAITING_TIMEOUT = 10000;
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class RemotesQueue {
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constructor() {
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this.events = new events_1.EventEmitter();
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this.shiftingTimeout = Promise.resolve();
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this.pendingConnections = {};
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}
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add(remoteConnection) {
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const connectionReadyPromise = (0, promisify_event_1.default)(remoteConnection, 'ready')
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.then(() => this.remove(remoteConnection));
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this.pendingConnections[remoteConnection.id] = {
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connection: remoteConnection,
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readyPromise: connectionReadyPromise,
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};
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this.events.emit('connection-added', remoteConnection.id);
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}
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remove(remoteConnection) {
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delete this.pendingConnections[remoteConnection.id];
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}
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shift() {
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const shiftingPromise = this.shiftingTimeout
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.then(async () => {
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let headId = Object.keys(this.pendingConnections)[0];
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if (!headId)
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headId = await (0, time_limit_promise_1.default)((0, promisify_event_1.default)(this.events, 'connection-added'), ADDING_CONNECTION_WAITING_TIMEOUT);
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return headId ? this.pendingConnections[headId].connection : null;
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});
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this.shiftingTimeout = shiftingPromise
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.then(connection => {
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if (!connection)
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return Promise.resolve();
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return (0, time_limit_promise_1.default)(this.pendingConnections[connection.id].readyPromise, REMOTE_REDIRECT_TIMEOUT);
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});
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return shiftingPromise;
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}
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}
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exports.default = RemotesQueue;
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module.exports = exports.default;
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