mirror of
https://github.com/amark/gun.git
synced 2025-03-30 15:08:33 +00:00
244 lines
8.1 KiB
JavaScript
244 lines
8.1 KiB
JavaScript
;(function(){
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/* UNBUILD */
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var root;
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if(typeof window !== "undefined"){ root = window }
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if(typeof global !== "undefined"){ root = global }
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root = root || {};
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var console = root.console || {log: function(){}};
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function USE(arg, req){
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return req? require(arg) : arg.slice? USE[R(arg)] : function(mod, path){
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arg(mod = {exports: {}});
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USE[R(path)] = mod.exports;
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}
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function R(p){
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return p.split('/').slice(-1).toString().replace('.js','');
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}
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}
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if(typeof module !== "undefined"){ var common = module }
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/* UNBUILD */
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;USE(function(module){
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if(typeof window !== "undefined"){ module.window = window }
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var tmp = module.window || module;
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var AXE = tmp.AXE || function(){};
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if(AXE.window = module.window){ AXE.window.AXE = AXE }
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try{ if(typeof common !== "undefined"){ common.exports = AXE } }catch(e){}
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module.exports = AXE;
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})(USE, './root');
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;USE(function(module){
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var AXE = USE('./root'), Gun = (AXE.window||{}).Gun || USE('./gun', 1);
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(Gun.AXE = AXE).GUN = AXE.Gun = Gun;
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Gun.on('opt', function(at){
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if(!at.axe){
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var axe = at.axe = {}, tmp;
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var opt = at.opt, peers = opt.peers;
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// 1. If any remembered peers or from last cache or extension
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// 2. Fallback to use hard coded peers from dApp
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// 3. Or any offered peers.
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//if(Gun.obj.empty(p)){
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// Gun.obj.map(['http://localhost:8765/gun'/*, 'https://guntest.herokuapp.com/gun'*/], function(url){
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// p[url] = {url: url, axe: {}};
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// });
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//}
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// Our current hypothesis is that it is most optimal
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// to take peers in a common network, and align
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// them in a line, where you only have left and right
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// peers, so messages propagate left and right in
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// a linear manner with reduced overlap, and
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// with one common superpeer (with ready failovers)
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// in case the p2p linear latency is high.
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// Or there could be plenty of other better options.
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var mesh = opt.mesh = opt.mesh || Gun.Mesh(at);
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console.log("AXE enabled.");
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function verify(dht, msg) {
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var puts = Object.keys(msg.put);
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var soul = puts[0]; /// TODO: verify all souls in puts. Copy the msg only with subscribed souls?
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var subs = dht(soul);
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// console.log('[AXE] VERIFY soul: %s, subs: %s, Peers: %s, msg: ', soul, subs, Object.keys(peers), msg);
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if (!subs) { return; }
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var tmp = [];
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Gun.obj.map(subs.split(','), function(pid) {
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if (pid in peers) {
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tmp.push(pid);
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// console.log('[AXE] SEND TO >>>>> ', pid, msg.put.bob || msg.put);
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mesh.say(msg, peers[pid]);
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}
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});
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/// Only connected peers in the tmp array.
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if (opt.super) {
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dht(soul, tmp.join(','));
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}
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}
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var Rad = (Gun.window||{}).Radix || USE('./lib/radix', 1);
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at.opt.dht = Rad();
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at.on('in', input/*USE('./lib/super', 1)*/, at);
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// at.on('out', function(msg, a) {
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// this.to.next(msg);
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// console.log('[AXE] out:', msg, a);
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// }, at);
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function input(msg){
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var to = this.to, peer = (msg._||{}).via;
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var dht = opt.dht;
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var routes = axe.routes || (axe.routes = {}); // USE RAD INSTEAD! TMP TESTING!
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var get = msg.get, hash, tmp;
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if(get && opt.super && peer){
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hash = Gun.obj.hash(get); // USE RAD INSTEAD!
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(routes[hash] || (routes[hash] = {}))[peer.id] = peer;
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(peer.routes || (peer.routes = {}))[hash] = routes[hash];
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/*if(soul = get['#']){ // SWITCH BACK TO USING DHT!
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if(key = get['.']){
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} else {
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}
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if (!peer.id) {console.log('[*** WARN] no peer.id %s', soul);}
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var pids = joindht(dht, soul, peer.id);
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if (pids) {
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var dht = {};
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dht[soul] = pids;
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mesh.say({dht:dht}, opt.peers[peer.id]);
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}
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}*/
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}
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if((tmp = msg['@']) && (tmp = at.dup.s[tmp]) && (tmp = tmp.it)){
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(tmp = (tmp._||ok)).ack = (tmp.ack || 0) + 1;
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}
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to.next(msg);
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if (opt.rtc && msg.dht) {
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Gun.obj.map(msg.dht, function(pids, soul) {
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dht(soul, pids);
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Gun.obj.map(pids.split(','), function(pid) {
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/// TODO: here we can put an algorithm of who must connect?
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if (!pid || pid in opt.peers || pid === opt.pid || opt.announce[pid]) { return; }
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opt.announce[pid] = true; /// To try only one connection to the same peer.
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opt.announce(pid);
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});
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});
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}
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}
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if(at.opt.super){
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var rotate = 0;
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mesh.way = function(msg) {
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if (msg.rtc) {
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// console.log('[AXE] MSG WEBRTC: ', msg.rtc);
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if (msg.rtc.to) {
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/// Send announce to one peer only if the msg have 'to' attr
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var peer = (peers) ? peers[msg.rtc.to] : null;
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if (peer) { mesh.say(msg, peer); }
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return;
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}
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}
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if(msg.get){
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var hash = Gun.obj.hash(msg.get);
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var routes = axe.routes || (axe.routes = {}); // USE RAD INSTEAD! TMP TESTING!
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var peers = routes[hash];
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function chat(peers, old){ // what about optimizing for directed peers?
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if(!peers){ return chat(opt.peers) }
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var ids = Object.keys(peers); // TODO: BUG! THIS IS BAD PERFORMANCE!!!!
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var meta = (msg._||yes);
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clearTimeout(meta.lack);
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var id, peer, c = 1; // opt. ?redundancy?
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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?
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peer = peers[id];
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meta.turn = (meta.turn || 0) + 1;
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if((old && old[id]) || false === mesh.say(msg, peer)){ ++c }
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}
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//console.log("AXE:", Gun.obj.copy(msg), meta.turn, c, ids, opt.peers === peers);
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if(0 < c){
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if(peers === opt.peers){ return } // prevent infinite lack loop.
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return meta.turn = 0, chat(opt.peers, peers)
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}
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var hash = msg['##'], ack = meta.ack;
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meta.lack = setTimeout(function(){
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if(ack && hash && hash === msg['##']){ return }
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if(meta.turn >= (axe.turns || 3)){ return } // variable for later! Also consider ACK based turn limit.
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//console.log(msg['#'], "CONTINUE:", ack, hash, msg['##']);
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chat(peers, old); // keep asking for data if there is mismatching hashes.
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}, 25);
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}
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return chat(peers);
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}
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// TODO: PUTs need to only go to subs!
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mesh.say(msg, opt.peers); return; // TODO: DISABLE THIS!!! USE DHT!
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if (!msg.put) { mesh.say(msg); return; }
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//console.log('AXE HOOK!! ', msg);
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verify(opt.dht, msg);
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};
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} else {
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mesh.route = function(msg) {
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if (msg.rtc) {
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// console.log('[AXE] MSG WEBRTC: ', msg.rtc);
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}
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if (!msg.put) { mesh.say(msg); return; }
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verify(opt.dht, msg);
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/// Always send to superpeers?
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Gun.obj.map(peers, function(peer) {
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if (peer.url) {
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// console.log('SEND TO SUPERPEER', msg);
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mesh.say(msg, peer);
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}
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});
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};
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/*var connections = 0; // THIS HAS BEEN MOVED TO CORE NOW!
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at.on('hi', function(opt) {
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this.to.next(opt);
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//console.log('AXE PEER [HI]', new Date(), opt);
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connections++;
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/// The first connection don't need to resubscribe the nodes.
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if (connections === 1) { return; }
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/// Resubscribe all nodes.
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setTimeout(function() {
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var souls = Object.keys(at.graph);
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for (var i=0; i < souls.length; ++i) {
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//at.gun.get(souls[i]).off();
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at.next[souls[i]].ack = 0;
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at.gun.get(souls[i]).once(function(){});
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}
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//location.reload();
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}, 500);
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}, at);*/
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}
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at.on('bye', function(peer){ this.to.next(peer);
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Gun.obj.map(peer.routes, function(route, hash){
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delete route[peer.id];
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if(Gun.obj.empty(route)){
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delete axe.routes[hash];
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}
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});
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});
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}
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this.to.next(at); // make sure to call the "next" middleware adapter.
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});
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function joindht(dht, soul, pids) {
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if (!pids || !soul || !dht) { return; }
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var subs = dht(soul);
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var tmp = subs ? subs.split(',') : [];
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Gun.obj.map(pids.split(','), function(pid) {
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if (pid && tmp.indexOf(pid) === -1) { tmp.push(pid); }
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});
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tmp = tmp.join(',');
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dht(soul, tmp);
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return tmp;
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}
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var empty = {}, yes = true, u;
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module.exports = AXE;
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})(USE, './axe');
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}());
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