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Юрий Губич
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316
libjs/wModel/model.js
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316
libjs/wModel/model.js
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"use strict";
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var Subscribable = require("../utils/subscribable");
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var AbstcractMap = require("../wContainer/abstractmap");
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var AbstractOrder = require("../wContainer/abstractorder");
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var Address = require("../wType/address");
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var Uint64 = require("../wType/uint64");
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var Event = require("../wType/event");
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var Vector = require("../wType/vector");
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var Vocabulary = require("../wType/vocabulary");
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var String = require("../wType/string");
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var Handler = require("../wDispatcher/handler");
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var Model = Subscribable.inherit({
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"className": "Model",
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"constructor": function(address) {
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Subscribable.fn.constructor.call(this);
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var SMap = AbstcractMap.template(Uint64, Model.addressOrder);
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this._registered = false;
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this._subscribers = new SMap(false);
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this._handlers = [];
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this._models = [];
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this._props = new Vector();
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this._address = address;
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this._subscribersCount = 0;
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this.addHandler("subscribe");
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this.addHandler("unsubscribe");
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},
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"destructor": function() {
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var i;
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if (this._registered) {
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this.unregister();
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}
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this._subscribers.destructor();
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for (i = 0; i < this._models.length; ++i) {
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this._models[i].destructor();
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}
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for (i = 0; i < this._handlers.length; ++i) {
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this._handlers[i].destructor();
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}
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this._props.destructor();
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Subscribable.fn.destructor.call(this);
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},
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"addHandler": function(name) {
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if (!(this["_h_" + name] instanceof Function)) {
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throw new Error("An attempt to create handler without a handling method");
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}
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var handler = new Handler(this._address["+"](new Address([name])), this, this["_h_" + name]);
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this._addHandler(handler);
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},
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"_addHandler": function(handler) {
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this._handlers.push(handler);
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if (this._registered) {
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this._dp.registerHandler(handler);
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}
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},
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"addModel": function(model) {
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if (!(model instanceof Model)) {
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throw new Error("An attempt to add not a model into " + this.className);
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}
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this._models.push(model);
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model.on("serviceMessage", this._onModelServiceMessage, this);
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if (this._registered) {
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model.register(this._dp, this._server);
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}
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},
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"addProperty": function(property, key) {
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var vc = new Vocabulary();
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vc.insert("property", new String(property));
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vc.insert("key", new String(key));
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this._props.push(vc);
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if (this._registered) {
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var nvc = new Vocabulary();
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nvc.insert("properties", this._props.clone());
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this.broadcast(nvc, "properties");
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}
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},
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"broadcast": function(vc, handler) {
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var itr = this._subscribers.begin();
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var end = this._subscribers.end();
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vc.insert("source", this._address.clone());
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for (;!itr["=="](end); itr["++"]()) {
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var obj = itr["*"]();
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var order = obj.second;
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var socket = this._server.getConnection(obj.first);
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var oItr = order.begin();
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var oEnd = order.end();
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for (;!oItr["=="](oEnd); oItr["++"]()) {
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var addr = oItr["*"]()["+"](new Address([handler]));
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var ev = new Event(addr, vc.clone());
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ev.setSenderId(socket.getId().clone());
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socket.send(ev);
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ev.destructor();
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}
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}
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vc.destructor();
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},
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"getAddress": function() {
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return this._address.clone();
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},
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"getType": function() {
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var type = Model.ModelType[this.className];
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if (type === undefined) {
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throw new Error("Undefined ModelType");
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}
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return type;
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},
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"_h_subscribe": function(ev) {
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var id = ev.getSenderId();
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var source = ev.getData().at("source");
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var itr = this._subscribers.find(id);
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var ord;
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if (itr["=="](this._subscribers.end())) {
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ord = new Model.addressOrder(true);
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var socket = this._server.getConnection(id);
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socket.one("disconnected", this._onSocketDisconnected, this);
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this._subscribers.insert(id.clone(), ord);
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} else {
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ord = itr["*"]().second;
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var oItr = ord.find(source);
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if (!oItr["=="](ord.end())) {
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this.trigger("serviceMessage", "id: " + id.toString() + ", " +
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"source: " + source.toString() + " " +
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"is trying to subscribe on model " + this._address.toString() + " " +
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"but it's already subscribed", 1);
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return;
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}
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}
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ord.push_back(source.clone());
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++this._subscribersCount;
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this.trigger("serviceMessage", this._address.toString() + " has now " + this._subscribersCount + " subscribers", 0);
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var nvc = new Vocabulary();
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nvc.insert("properties", this._props.clone());
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this.response(nvc, "properties", ev);
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},
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"_h_unsubscribe": function(ev) {
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var id = ev.getSenderId();
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var source = ev.getData().at("source");
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var itr = this._subscribers.find(id);
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if (itr["=="](this._subscribers.end())) {
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this.trigger("serviceMessage", "id: " + id.toString() + ", " +
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"source: " + source.toString() + " " +
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"is trying to unsubscribe from model " + this._address.toString() + " " +
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"but even this id is not registered in subscribers map", 1
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);
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return
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}
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var ord = itr["*"]().second;
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var oItr = ord.find(source);
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if (oItr["=="](ord.end())) {
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this.trigger("serviceMessage", "id: " + id.toString() + ", " +
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"source: " + source.toString() + " " +
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"is trying to unsubscribe from model " + this._address.toString() + " " +
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"but such address is not subscribed to this model", 1
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);
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return
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}
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ord.erase(oItr["*"]());
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if (ord.size() === 0) {
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var socket = this._server.getConnection(itr["*"]().first);
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socket.off("disconnected", this._onSocketDisconnected, this);
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this._subscribers.erase(itr);
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ord.destructor();
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}
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--this._subscribersCount;
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this.trigger("serviceMessage", this._address.toString() + " has now " + this._subscribersCount + " subscribers", 0);
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},
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"_onModelServiceMessage": function(msg, severity) {
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this.trigger("serviceMessage", msg, severity);
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},
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"_onSocketDisconnected": function(ev, socket) {
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var id = socket.getId();
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var itr = this._subscribers.find(id);
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if (itr["=="](this._subscribers.end())) {
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this.trigger("serviceMessage", "id: " + id.toString() + ", " +
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"after socket disconnected trying to remove subscriptions from model " +
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"but id haven't been found in subscribers map", 1);
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return
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}
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var ord = itr["*"]().second;
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this._subscribersCount -= ord.size();
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this._subscribers.erase(itr);
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ord.destructor();
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this.trigger("serviceMessage", this._address.toString() + " has now " + this._subscribersCount + " subscribers", 0);
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},
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"register": function(dp, server) {
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if (this._registered) {
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throw new Error("Model " + this._address.toString() + " is already registered");
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}
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this._dp = dp;
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this._server = server;
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var i;
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for (i = 0; i < this._models.length; ++i) {
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this._models[i].register(dp, server);
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}
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for (i = 0; i < this._handlers.length; ++i) {
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dp.registerHandler(this._handlers[i]);
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}
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this._registered = true;
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},
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"_removeHandler": function(handler) {
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var index = this._handlers.indexOf(handler);
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if (index === -1) {
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throw new Error("An attempt to remove non existing handler");
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}
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this._handlers.splice(index, 1);
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if (this._registered) {
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this._dp.unregisterHandler(handler);
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}
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},
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"removeModel": function(model) {
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if (!(model instanceof Model)) {
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throw new Error("An attempt to remove not a model from " + this.className);
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}
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var index = this._models.indexOf(model);
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if (index === -1) {
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throw new Error("An attempt to remove non existing model from " + this.className);
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}
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this._models.splice(index, 1);
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if (this._registered) {
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model.unregister(this._dp, this._server);
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}
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},
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"response": function(vc, handler, src) {
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if (!this._registered) {
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throw new Error("An attempt to send a message from unregistered model " + this._address.toString());
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}
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var source = src.getData().at("source").clone();
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var id = src.getSenderId().clone();
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var addr = source["+"](new Address([handler]));
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vc.insert("source", this._address.clone());
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var ev = new Event(addr, vc);
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ev.setSenderId(id);
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var socket = this._server.getConnection(id);
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socket.send(ev);
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ev.destructor();
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},
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"unregister": function() {
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if (!this._registered) {
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throw new Error("Model " + this._address.toString() + " is not registered");
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}
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var i;
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for (i = 0; i < this._models.length; ++i) {
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this._models[i].unregister();
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}
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for (i = 0; i < this._handlers.length; ++i) {
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this._dp.unregisterHandler(this._handlers[i]);
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}
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var itr = this._subscribers.begin();
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var end = this._subscribers.end();
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for (;!itr["=="](end); itr["++"]()) {
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var socket = this._server.getConnection(itr["*"]().first);
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var ord = itr["*"]().second;
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ord.destructor();
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socket.off("disconnected", this._onSocketDisconnected, this);
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}
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this._subscribers.clear();
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this._subscribersCount = 0;
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delete this._dp;
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delete this._server;
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this._registered = false;
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}
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});
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Model.getModelTypeId = function(model) {
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return this.ModelType[model.className];
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}
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Model.addressOrder = AbstractOrder.template(Address);
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Model.ModelType = {
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String: 0,
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List: 1,
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Vocabulary: 2,
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Image: 3,
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Model: 4,
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Attributes: 50,
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GlobalControls: 100,
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Link: 101,
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Page: 102,
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PageStorage: 103,
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PanesList: 104,
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Theme: 105,
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ThemeStorage: 106
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};
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module.exports = Model;
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