diffusion
Version:
Diffusion JavaScript client
223 lines (222 loc) • 11.2 kB
JavaScript
"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.workerSessionRegistry = exports.WorkerSessionRegistry = void 0;
var close_reason_1 = require("./../client/close-reason");
var InternalSessionFactory = require("./../client/internal-session-factory");
var worker_session_adapter_1 = require("./../webworker/worker-session-adapter");
var close_reason_2 = require("../../client/close-reason");
/**
* A registry living inside a shared worker keeping track of named shared
* sessions
*/
var WorkerSessionRegistry = /** @class */ (function () {
function WorkerSessionRegistry(adapterFactory) {
/**
* The map of connected sessions indexed by their name
*/
this.sessions = {};
/**
* Sessions that have been initiated but are not yet connected
*/
this.pendingSessions = {};
this.adapterFactory = adapterFactory;
}
/**
* Request for a new session to connect
*
* @param port the message port on which the shared worker
* communicates to the browser tab
* @param sessionName the name of the session
* @param options the session options
*/
WorkerSessionRegistry.prototype.connect = function (port, sessionName, options) {
return __awaiter(this, void 0, void 0, function () {
var sessionAdapter, sessionPromise, err_1, error;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 7, , 8]);
sessionAdapter = void 0;
if (!(this.sessions[sessionName] === undefined)) return [3 /*break*/, 5];
if (!(this.pendingSessions[sessionName] === undefined)) return [3 /*break*/, 2];
sessionPromise = this.adapterFactory(InternalSessionFactory.createInternal, options);
this.pendingSessions[sessionName] = sessionPromise;
return [4 /*yield*/, sessionPromise];
case 1:
sessionAdapter = _a.sent();
this.sessions[sessionName] = sessionAdapter;
delete this.pendingSessions[sessionName];
return [3 /*break*/, 4];
case 2: return [4 /*yield*/, this.pendingSessions[sessionName]];
case 3:
sessionAdapter = _a.sent();
_a.label = 4;
case 4: return [3 /*break*/, 6];
case 5:
sessionAdapter = this.sessions[sessionName];
_a.label = 6;
case 6:
this.setSessionListeners(sessionAdapter, port, sessionName);
return [3 /*break*/, 8];
case 7:
err_1 = _a.sent();
error = (err_1 instanceof close_reason_1.CloseReasonImpl) ? close_reason_2.CloseReasonEnum[err_1.id] : err_1.message || err_1.toString();
delete this.pendingSessions[sessionName];
delete this.sessions[sessionName];
port.postMessage([sessionName, 'connect_error', error]);
return [3 /*break*/, 8];
case 8: return [2 /*return*/];
}
});
});
};
/**
* Close the shared session
*
* @param port the message port on which the shared worker
* communicates to the browser tab
* @param sessionName the name of the session
*/
WorkerSessionRegistry.prototype.close = function (port, sessionName) {
// tslint:disable-next-line:strict-type-predicates
if (this.sessions[sessionName] !== undefined) {
this.sessions[sessionName].internal.close();
}
else {
port.postMessage([sessionName, 'error_event', "Shared session '" + sessionName + "' does not exist."]);
}
};
/**
* Request to connect to an existing session
*
* @param port the message port on which the shared worker
* communicates to the browser tab
* @param sessionName the name of the session
*/
WorkerSessionRegistry.prototype.connectExisting = function (port, sessionName) {
return __awaiter(this, void 0, void 0, function () {
var sessionAdapter;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!(this.sessions[sessionName] === undefined)) return [3 /*break*/, 4];
if (!(this.pendingSessions[sessionName] === undefined)) return [3 /*break*/, 1];
port.postMessage([sessionName, 'error_event', "Shared session '" + sessionName + "' does not exist."]);
return [2 /*return*/];
case 1: return [4 /*yield*/, this.pendingSessions[sessionName]];
case 2:
sessionAdapter = _a.sent();
_a.label = 3;
case 3: return [3 /*break*/, 5];
case 4:
sessionAdapter = this.sessions[sessionName];
_a.label = 5;
case 5:
this.setSessionListeners(sessionAdapter, port, sessionName);
return [2 /*return*/];
}
});
});
};
WorkerSessionRegistry.prototype.setSessionListeners = function (sessionAdapter, port, sessionName) {
var _this = this;
sessionAdapter.internal.on({
connect: function (sessionID) {
port.postMessage([
sessionName,
'connect_event',
sessionID.toString(),
JSON.stringify(sessionAdapter.internal.getOptions()),
sessionAdapter.internal.getServerMaximumMessageSize().toString(10)
]);
},
reconnect: function () {
port.postMessage([sessionName, 'reconnect_event']);
},
disconnect: function (reason) {
// eslint-disable-next-line deprecation/deprecation
port.postMessage([sessionName, 'disconnect_event', reason.id]);
},
close: function (reason) {
// eslint-disable-next-line deprecation/deprecation
port.postMessage([sessionName, 'close_event', reason.id]);
delete _this.sessions[sessionName];
},
error: function (err) {
port.postMessage([sessionName, 'error_event', err]);
delete _this.sessions[sessionName];
}
});
sessionAdapter.internal.onStateChange(function (previous, current) {
port.postMessage([sessionName, 'state_change', current]);
});
port.postMessage([sessionName, 'state_change', sessionAdapter.internal.getState()]);
if (sessionAdapter.internal.isConnected()) {
port.postMessage([
sessionName,
'connect_event',
sessionAdapter.internal.getSessionId().toString(),
JSON.stringify(sessionAdapter.internal.getOptions()),
sessionAdapter.internal.getServerMaximumMessageSize().toString(10)
]);
}
};
/**
* Send a command to the shared session
*
* @param port the message port
* @param sessionName the name of the shared session
* @param command the command
* @param data data that goes along with the command
*/
WorkerSessionRegistry.prototype.onCommand = function (port, sessionName, command, data) {
// tslint:disable-next-line:strict-type-predicates
if (this.sessions[sessionName] === undefined) {
port.postMessage([sessionName, 'error_event', 'A shared session with this name could not be found']);
return;
}
var sessionAdapter = this.sessions[sessionName];
sessionAdapter.onCommand(command, data, function (response) {
port.postMessage([sessionName].concat(response));
});
};
return WorkerSessionRegistry;
}());
exports.WorkerSessionRegistry = WorkerSessionRegistry;
exports.workerSessionRegistry = new WorkerSessionRegistry(worker_session_adapter_1.WorkerSessionAdapter.create);