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axe.js
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axe.js
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;(function(){
/* UNBUILD */
var root;
if(typeof window !== "undefined"){ root = window }
if(typeof global !== "undefined"){ root = global }
root = root || {};
var console = root.console || {log: function(){}};
function USE(arg, req){
return req? require(arg) : arg.slice? USE[R(arg)] : function(mod, path){
arg(mod = {exports: {}});
USE[R(path)] = mod.exports;
}
function R(p){
return p.split('/').slice(-1).toString().replace('.js','');
}
}
if(typeof module !== "undefined"){ var common = module }
/* UNBUILD */
;USE(function(module){
if(typeof window !== "undefined"){ module.window = window }
var tmp = module.window || module;
var AXE = tmp.AXE || function(){};
if(AXE.window = module.window){ AXE.window.AXE = AXE }
try{ if(typeof common !== "undefined"){ common.exports = AXE } }catch(e){}
module.exports = AXE;
})(USE, './root');
;USE(function(module){
var AXE = USE('./root'), Gun = (AXE.window||{}).Gun || USE('./gun', 1);
(Gun.AXE = AXE).GUN = AXE.Gun = Gun;
Gun.on('opt', function(at){
if(!at.axe){
var axe = at.axe = {}, tmp;
var opt = at.opt, peers = opt.peers;
// 1. If any remembered peers or from last cache or extension
// 2. Fallback to use hard coded peers from dApp
// 3. Or any offered peers.
//if(Gun.obj.empty(p)){
// Gun.obj.map(['http://localhost:8765/gun'/*, 'https://guntest.herokuapp.com/gun'*/], function(url){
// p[url] = {url: url, axe: {}};
// });
//}
// Our current hypothesis is that it is most optimal
// to take peers in a common network, and align
// them in a line, where you only have left and right
// peers, so messages propagate left and right in
// a linear manner with reduced overlap, and
// with one common superpeer (with ready failovers)
// in case the p2p linear latency is high.
// Or there could be plenty of other better options.
var mesh = opt.mesh = opt.mesh || Gun.Mesh(at);
console.log("AXE enabled.");
function verify(dht, msg) {
var puts = Object.keys(msg.put);
var soul = puts[0]; /// TODO: verify all souls in puts. Copy the msg only with subscribed souls?
var subs = dht(soul);
// console.log('[AXE] VERIFY soul: %s, subs: %s, Peers: %s, msg: ', soul, subs, Object.keys(peers), msg);
if (!subs) { return; }
var tmp = [];
Gun.obj.map(subs.split(','), function(pid) {
if (pid in peers) {
tmp.push(pid);
// console.log('[AXE] SEND TO >>>>> ', pid, msg.put.bob || msg.put);
mesh.say(msg, peers[pid]);
}
});
/// Only connected peers in the tmp array.
if (opt.super) {
dht(soul, tmp.join(','));
}
}
var Rad = (Gun.window||{}).Radix || USE('./lib/radix', 1);
at.opt.dht = Rad();
at.on('in', input/*USE('./lib/super', 1)*/, at);
// at.on('out', function(msg, a) {
// this.to.next(msg);
// console.log('[AXE] out:', msg, a);
// }, at);
function input(msg){
var to = this.to, peer = (msg._||{}).via;
var dht = opt.dht;
var routes = axe.routes || (axe.routes = {}); // USE RAD INSTEAD! TMP TESTING!
var get = msg.get, hash, tmp;
if(get && opt.super && peer){
hash = Gun.obj.hash(get); // USE RAD INSTEAD!
(routes[hash] || (routes[hash] = {}))[peer.id] = peer;
(peer.routes || (peer.routes = {}))[hash] = routes[hash];
/*if(soul = get['#']){ // SWITCH BACK TO USING DHT!
if(key = get['.']){
} else {
}
if (!peer.id) {console.log('[*** WARN] no peer.id %s', soul);}
var pids = joindht(dht, soul, peer.id);
if (pids) {
var dht = {};
dht[soul] = pids;
mesh.say({dht:dht}, opt.peers[peer.id]);
}
}*/
}
if((tmp = msg['@']) && (tmp = at.dup.s[tmp]) && (tmp = tmp.it)){
(tmp = (tmp._||ok)).ack = (tmp.ack || 0) + 1;
}
to.next(msg);
if (opt.rtc && msg.dht) {
Gun.obj.map(msg.dht, function(pids, soul) {
dht(soul, pids);
Gun.obj.map(pids.split(','), function(pid) {
/// TODO: here we can put an algorithm of who must connect?
if (!pid || pid in opt.peers || pid === opt.pid || opt.announce[pid]) { return; }
opt.announce[pid] = true; /// To try only one connection to the same peer.
opt.announce(pid);
});
});
}
}
if(at.opt.super){
var rotate = 0;
mesh.way = function(msg) {
if (msg.rtc) {
// console.log('[AXE] MSG WEBRTC: ', msg.rtc);
if (msg.rtc.to) {
/// Send announce to one peer only if the msg have 'to' attr
var peer = (peers) ? peers[msg.rtc.to] : null;
if (peer) { mesh.say(msg, peer); }
return;
}
}
if(msg.get){
var hash = Gun.obj.hash(msg.get);
var routes = axe.routes || (axe.routes = {}); // USE RAD INSTEAD! TMP TESTING!
var peers = routes[hash];
function chat(peers, old){ // what about optimizing for directed peers?
if(!peers){ return chat(opt.peers) }
var ids = Object.keys(peers); // TODO: BUG! THIS IS BAD PERFORMANCE!!!!
var meta = (msg._||yes);
clearTimeout(meta.lack);
var id, peer, c = 1; // opt. ?redundancy?
while((id = ids[meta.turn || 0]) && c--){ // TODO: This hits peers in order, not necessarily best for load balancing. And what about optimizing for directed peers?
peer = peers[id];
meta.turn = (meta.turn || 0) + 1;
if((old && old[id]) || false === mesh.say(msg, peer)){ ++c }
}
//console.log("AXE:", Gun.obj.copy(msg), meta.turn, c, ids, opt.peers === peers);
if(0 < c){
if(peers === opt.peers){ return } // prevent infinite lack loop.
return meta.turn = 0, chat(opt.peers, peers)
}
var hash = msg['##'], ack = meta.ack;
meta.lack = setTimeout(function(){
if(ack && hash && hash === msg['##']){ return }
if(meta.turn >= (axe.turns || 3)){ return } // variable for later! Also consider ACK based turn limit.
//console.log(msg['#'], "CONTINUE:", ack, hash, msg['##']);
chat(peers, old); // keep asking for data if there is mismatching hashes.
}, 25);
}
return chat(peers);
}
// TODO: PUTs need to only go to subs!
mesh.say(msg, opt.peers); return; // TODO: DISABLE THIS!!! USE DHT!
if (!msg.put) { mesh.say(msg); return; }
//console.log('AXE HOOK!! ', msg);
verify(opt.dht, msg);
};
} else {
mesh.route = function(msg) {
if (msg.rtc) {
// console.log('[AXE] MSG WEBRTC: ', msg.rtc);
}
if (!msg.put) { mesh.say(msg); return; }
verify(opt.dht, msg);
/// Always send to superpeers?
Gun.obj.map(peers, function(peer) {
if (peer.url) {
// console.log('SEND TO SUPERPEER', msg);
mesh.say(msg, peer);
}
});
};
/*var connections = 0; // THIS HAS BEEN MOVED TO CORE NOW!
at.on('hi', function(opt) {
this.to.next(opt);
//console.log('AXE PEER [HI]', new Date(), opt);
connections++;
/// The first connection don't need to resubscribe the nodes.
if (connections === 1) { return; }
/// Resubscribe all nodes.
setTimeout(function() {
var souls = Object.keys(at.graph);
for (var i=0; i < souls.length; ++i) {
//at.gun.get(souls[i]).off();
at.next[souls[i]].ack = 0;
at.gun.get(souls[i]).once(function(){});
}
//location.reload();
}, 500);
}, at);*/
}
at.on('bye', function(peer){ this.to.next(peer);
Gun.obj.map(peer.routes, function(route, hash){
delete route[peer.id];
if(Gun.obj.empty(route)){
delete axe.routes[hash];
}
});
});
}
this.to.next(at); // make sure to call the "next" middleware adapter.
});
function joindht(dht, soul, pids) {
if (!pids || !soul || !dht) { return; }
var subs = dht(soul);
var tmp = subs ? subs.split(',') : [];
Gun.obj.map(pids.split(','), function(pid) {
if (pid && tmp.indexOf(pid) === -1) { tmp.push(pid); }
});
tmp = tmp.join(',');
dht(soul, tmp);
return tmp;
}
var empty = {}, yes = true, u;
module.exports = AXE;
})(USE, './axe');
}());