mirror of
https://github.com/matrix-construct/construct
synced 2024-11-30 02:32:43 +01:00
122 lines
2.7 KiB
JavaScript
122 lines
2.7 KiB
JavaScript
/*
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// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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*/
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'use strict';
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/**
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******************************************************************************
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*
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* I/O
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*
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* Lower-level protocol suite.
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*/
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/**
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******************************************************************************
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* Lower-level network related subsystems
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*
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*****************************************************************************
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*/
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mc.io = {};
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/** Global IO stats
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*/
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mc.io.stats =
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{
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aborts: 0,
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errors: 0,
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};
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/** Global stats for data transmitted.
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*/
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mc.io.stats.sent =
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{
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bytes: 0,
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msgs: 0,
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};
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/** Global stats for data received.
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*/
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mc.io.stats.recv =
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{
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bytes: 0,
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msgs: 0,
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};
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/** Active requests table.
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*
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* This is a collection to provide a way to iterate through all pending requests.
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* You should not manipulate this collection; requests add and remove themselves.
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* To cancel a request or all requests, use the io.cancel() suite.
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*/
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mc.io.requests =
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{
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// URL => request
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};
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/** Cancel a request by URL.
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*
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* @returns a promise which can be awaited on.
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*/
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mc.io.cancel = function(url, reason = "Aborted")
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{
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let request = mc.io.requests[url];
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let promise = request.abort(reason);
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mc.io.stats.aborts++;
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return promise;
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}
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/** Cancel all requests.
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*
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* @returns a promise of all() the cancelations which can be awaited on.
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*/
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mc.io.cancel.all = function(reason = "Aborted")
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{
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let cancel = (url) => mc.io.cancel(url, reason);
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let urls = Object.keys(mc.io.requests);
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let count = urls.length;
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console.warn("Interrupting " + count + " pending IO requests (reason: " + reason + ")");
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let futures = urls.map(cancel);
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return Promise.all(futures);
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};
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/** Add a request to the requests collection. Called automatically by request
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* object constructor. You do not need this.
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*/
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Object.defineProperty(mc.io.requests, 'insert', {
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writable: false,
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enumerable: false,
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configurable: false,
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value: function(request)
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{
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let key = request.url;
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if((key in mc.io.requests))
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return false;
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mc.io.requests[key] = request;
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return true;
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}});
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/** Remove a request from the requests collection. Called automatically by request
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* object destructor. You do not need this.
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*/
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Object.defineProperty(mc.io.requests, 'remove', {
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writable: false,
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enumerable: false,
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configurable: false,
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value: function(request)
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{
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let key = request.url;
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delete mc.io.requests[key];
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}});
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