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Blue 2018-08-05 00:46:25 +03:00 • committed by Юрий Губич
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magnus/core/connector.js Normal file
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"use strict";
var Subscribable = require("../lib/utils/subscribable");
var Handler = require("../lib/wDispatcher/handler");
var String = require("../lib/wType/string");
var Address = require("../lib/wType/address");
var Uint64 = require("../lib/wType/uint64");
var Object = require("../lib/wType/object");
var Vocabulary = require("../lib/wType/vocabulary");
var Socket = require("../lib/wSocket/socket");
var Connector = Subscribable.inherit({
"className": "Connector",
"constructor": function(dp, srv, cmds) {
Subscribable.fn.constructor.call(this);
this._dispatcher = dp;
this._server = srv;
this._commands = cmds;
this._nodes = global.Object.create(null);
this._ignoredNodes = global.Object.create(null);
this._server.on("newConnection", this._onNewConnection, this);
this._server.on("closedConnection", this._onClosedConnection, this);
var cn = new Address(["connect"]);
var ch = new Handler(this._commands.getAddress()["+"](cn), this, this._h_connect);
var vc = new Vocabulary();
vc.insert("address", new Uint64(Object.objectType.String));
vc.insert("port", new Uint64(Object.objectType.Uint64));
this._commands.addCommand("connect", ch, vc);
this._commands.enableCommand("connect", true);
cn.destructor();
},
"destructor": function() {
this._server.off("newConnection", this._onNewConnection, this);
this._server.off("closedConnection", this._onClosedConnection, this);
this._commands.removeCommand("connect");
for (var key in this._nodes) {
this._commands.removeCommand("disconnect" + key);
}
Subscribable.fn.destructor.call(this);
},
"addIgnoredNode": function(name) {
this._ignoredNodes[name] = true;
},
"sendTo": function(key, event) {
var id = this._nodes[key];
if (!id) {
throw new Error("An attempt to access non existing node in connector");
}
this._server.getConnection(id).send(event);
},
"_onNewConnection": function(socket) {
var name = socket.getRemoteName().toString();
if (this._ignoredNodes[name] === undefined) {
if (this._nodes[name] === undefined) {
if (this._server.getName().toString() === name) {
this.trigger("serviceMessage", "An attempt to connect node to itself, closing connection", 1);
setTimeout(this._server.closeConnection.bind(this._server, socket.getId()));
} else {
var dc = "disconnect";
var dn = dc + name;
var dh = new Handler(this._commands.getAddress()["+"](new Address([dc, name])), this, this._h_disconnect);
this._commands.addCommand(dn, dh, new Vocabulary());
this._commands.enableCommand(dn, true);
this._nodes[name] = socket.getId();
this.trigger("serviceMessage", "New connection, id: " + socket.getId().toString(), 0);
socket.on("message", this._dispatcher.pass, this._dispatcher);
this.trigger("nodeConnected", name);
}
} else {
this.trigger("serviceMessage", "Node " + name + " tried to connect, but connection with that node is already open, closing new connection", 1);
setTimeout(this._server.closeConnection.bind(this._server, socket.getId()));
}
} else {
this.trigger("serviceMessage", "New connection, id: " + socket.getId().toString(), 0);
socket.on("message", this._dispatcher.pass, this._dispatcher);
}
},
"_onClosedConnection": function(socket) {
this.trigger("serviceMessage", "Connection closed, id: " + socket.getId().toString());
var name = socket.getRemoteName().toString();
if (this._ignoredNodes[name] === undefined) {
if (this._nodes[name]) {
this._commands.removeCommand("disconnect" + name);
delete this._nodes[name];
this.trigger("nodeDisconnected", name);
}
}
},
"getNodeSocket": function(key) {
var id = this._nodes[key];
if (!id) {
throw new Error("An attempt to access non existing node in connector");
}
return this._server.getConnection(id);
},
"_h_connect": function(ev) {
var vc = ev.getData();
this._server.openConnection(vc.at("address"), vc.at("port"));
},
"_h_disconnect": function(ev) {
var addr = ev.getDestination();
var id = this._nodes[addr.back().toString()];
if (id) {
this._server.closeConnection(id);
}
}
});
module.exports = Connector;