mirror of
https://github.com/matrix-construct/construct
synced 2024-11-17 23:40:57 +01:00
134 lines
3.3 KiB
JavaScript
134 lines
3.3 KiB
JavaScript
/*
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* IRCd Charybdis 5/Matrix
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*
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* Copyright (C) 2017 Charybdis Development Team
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* Copyright (C) 2017 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.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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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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