mirror of
https://github.com/matrix-construct/construct
synced 2024-07-06 02:28:38 +02:00
123 lines
2.7 KiB
JavaScript
123 lines
2.7 KiB
JavaScript
/*
|
|
// Matrix Construct
|
|
//
|
|
// Copyright (C) Matrix Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice is present in all copies. The
|
|
// full license for this software is available in the LICENSE file.
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
/**
|
|
******************************************************************************
|
|
*
|
|
* I/O
|
|
*
|
|
* Lower-level protocol suite.
|
|
*/
|
|
|
|
/**
|
|
******************************************************************************
|
|
* Lower-level network related subsystems
|
|
*
|
|
*****************************************************************************
|
|
*/
|
|
mc.io = {};
|
|
|
|
/** Global IO stats
|
|
*/
|
|
mc.io.stats =
|
|
{
|
|
aborts: 0,
|
|
errors: 0,
|
|
};
|
|
|
|
/** Global stats for data transmitted.
|
|
*/
|
|
mc.io.stats.sent =
|
|
{
|
|
bytes: 0,
|
|
msgs: 0,
|
|
};
|
|
|
|
/** Global stats for data received.
|
|
*/
|
|
mc.io.stats.recv =
|
|
{
|
|
bytes: 0,
|
|
msgs: 0,
|
|
};
|
|
|
|
/** Active requests table.
|
|
*
|
|
* This is a collection to provide a way to iterate through all pending requests.
|
|
* You should not manipulate this collection; requests add and remove themselves.
|
|
* To cancel a request or all requests, use the io.cancel() suite.
|
|
*/
|
|
mc.io.requests =
|
|
{
|
|
// URL => request
|
|
};
|
|
|
|
/** Cancel a request by URL.
|
|
*
|
|
* @returns a promise which can be awaited on.
|
|
*/
|
|
mc.io.cancel = function(url, reason = "Aborted")
|
|
{
|
|
let request = mc.io.requests[url];
|
|
let promise = request.abort(reason);
|
|
mc.io.stats.aborts++;
|
|
return promise;
|
|
}
|
|
|
|
/** Cancel all requests.
|
|
*
|
|
* @returns a promise of all() the cancelations which can be awaited on.
|
|
*/
|
|
mc.io.cancel.all = function(reason = "Aborted")
|
|
{
|
|
let cancel = (url) => mc.io.cancel(url, reason);
|
|
let urls = Object.keys(mc.io.requests);
|
|
|
|
let count = urls.length;
|
|
console.warn("Interrupting " + count + " pending IO requests (reason: " + reason + ")");
|
|
|
|
let futures = urls.map(cancel);
|
|
return Promise.all(futures);
|
|
};
|
|
|
|
/** Add a request to the requests collection. Called automatically by request
|
|
* object constructor. You do not need this.
|
|
*/
|
|
Object.defineProperty(mc.io.requests, 'insert', {
|
|
writable: false,
|
|
enumerable: false,
|
|
configurable: false,
|
|
value: function(request)
|
|
{
|
|
let key = request.url;
|
|
if((key in mc.io.requests))
|
|
return false;
|
|
|
|
mc.io.requests[key] = request;
|
|
return true;
|
|
}});
|
|
|
|
/** Remove a request from the requests collection. Called automatically by request
|
|
* object destructor. You do not need this.
|
|
*/
|
|
Object.defineProperty(mc.io.requests, 'remove', {
|
|
writable: false,
|
|
enumerable: false,
|
|
configurable: false,
|
|
value: function(request)
|
|
{
|
|
let key = request.url;
|
|
delete mc.io.requests[key];
|
|
}});
|