diffusion
Version:
Diffusion JavaScript client
268 lines (267 loc) • 11.7 kB
JavaScript
;
/**
* @module Control
*/
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
if (typeof b !== "function" && b !== null)
throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
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 };
}
};
var __read = (this && this.__read) || function (o, n) {
var m = typeof Symbol === "function" && o[Symbol.iterator];
if (!m) return o;
var i = m.call(o), r, ar = [], e;
try {
while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
}
catch (error) { e = { error: error }; }
finally {
try {
if (r && !r.done && (m = i["return"])) m.call(i);
}
finally { if (e) throw e.error; }
}
return ar;
};
var __spreadArray = (this && this.__spreadArray) || function (to, from) {
for (var i = 0, il = from.length, j = to.length; i < il; i++, j++)
to[j] = from[i];
return to;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.registerTopicHandler = exports.registerRequestHandler = exports.registerHandler = exports.registrationCallback = exports.responseHandler = exports.ResponseHandlerState = void 0;
var Services = require("./../services/services");
var Logger = require("./../util/logger");
var logger = Logger.create('Registration');
/**
* State of a response handler
*/
var ResponseHandlerState;
(function (ResponseHandlerState) {
ResponseHandlerState[ResponseHandlerState["REGISTERING"] = 0] = "REGISTERING";
ResponseHandlerState[ResponseHandlerState["ACTIVE"] = 1] = "ACTIVE";
ResponseHandlerState[ResponseHandlerState["CLOSED"] = 2] = "CLOSED";
})(ResponseHandlerState = exports.ResponseHandlerState || (exports.ResponseHandlerState = {}));
/**
* An error that indicating that a user defined handler has thrown an exception.
*/
var RegisteredHandlerException = /** @class */ (function (_super) {
__extends(RegisteredHandlerException, _super);
/**
* Create a RegisteredHandlerException
*
* @param cause the exception thrown by the user defined handler
* @param ...args additional parameters passed to the `Error` constructor
*/
function RegisteredHandlerException(cause) {
var args = [];
for (var _i = 1; _i < arguments.length; _i++) {
args[_i - 1] = arguments[_i];
}
var _this = _super.apply(this, __spreadArray([], __read(args))) || this;
_this.cause = cause;
return _this;
}
return RegisteredHandlerException;
}(Error));
/**
* Create a new response handler
*
* @param internal the internal session
* @param adapter the registration adapter
* @param deregistration the deregistration callback
* @return a new response handler
*/
function responseHandler(internal, adapter, deregistration) {
var state = ResponseHandlerState.REGISTERING;
var close;
return {
onDiscard: function (cid, err) {
try {
if (err instanceof internal.getContext().CloseReason) {
adapter.close();
}
else {
adapter.close(err);
}
}
catch (err) {
logger.error('REGISTERED_HANDLER_EXCEPTION', err);
}
state = ResponseHandlerState.CLOSED;
},
onOpen: function (cid) {
close = function () {
return new Promise(function (resolve, reject) {
if (state !== ResponseHandlerState.CLOSED) {
deregistration(cid, function (err) {
if (err) {
internal.getConversationSet().discard(cid, err);
reject(err);
}
else {
internal.getConversationSet().respondIfPresent(cid, ResponseHandlerState.CLOSED);
resolve();
}
});
}
else {
reject(new Error('Handler already closed'));
}
});
};
},
onResponse: function (cid, response) {
if (response === ResponseHandlerState.CLOSED) {
try {
adapter.close();
}
catch (err) {
logger.error('REGISTERED_HANDLER_EXCEPTION', err);
}
state = response;
return true;
}
try {
if (response === ResponseHandlerState.ACTIVE) {
adapter.active(close, cid);
state = response;
return false;
}
else {
return adapter.respond(response);
}
}
catch (err) {
logger.error('REGISTERED_HANDLER_EXCEPTION', err);
internal.getConversationSet().discard(cid, new RegisteredHandlerException(err, 'An error was thrown by the handler'));
close().catch(function (closeErr) {
logger.debug('Failed to deregister with the server', closeErr);
});
}
return true;
}
};
}
exports.responseHandler = responseHandler;
/**
* Create a registration callback function
*
* @param conversationSet the conversation set
* @param cid the conversation ID
* @param emitter the emitter to emit events on
* @return a new registration callback function
*/
function registrationCallback(conversationSet, cid, resolve, reject) {
return function (err) {
if (err) {
conversationSet.discard(cid, err);
reject(err);
}
else {
conversationSet.respondIfPresent(cid, ResponseHandlerState.ACTIVE);
resolve();
}
};
}
exports.registrationCallback = registrationCallback;
/**
* Register a handler with the conversation set.
*
* @param internal the internal session
* @param params the registration parameters to send to the server
* @param adapter the registration adapter
* @param reg the registration service that is used to register with the server
* @param dereg the deregistration service that is used to deregister with the server
*/
function registerHandler(internal, params, adapter, reg, dereg) {
return __awaiter(this, void 0, void 0, function () {
var conversationSet, serviceLocator, registration, deregistration, cid;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
conversationSet = internal.getConversationSet();
serviceLocator = internal.getServiceLocator();
registration = serviceLocator.obtain(reg);
deregistration = serviceLocator.obtain(dereg);
return [4 /*yield*/, conversationSet.newConversation(responseHandler(internal, adapter, function (conversationId, callback) {
deregistration.send(params, callback);
}))];
case 1:
cid = _a.sent();
return [2 /*return*/, new Promise(function (resolve, reject) {
registration.send({ params: params, cid: cid }, registrationCallback(conversationSet, cid, resolve, reject));
})];
}
});
});
}
exports.registerHandler = registerHandler;
/**
* Register a handler for the messaging service
*
* @param internal the internal session
* @param params the registration parameters to send to the server
* @param adapter the registration adapter
*/
function registerRequestHandler(internal, params, adapter) {
return registerHandler(internal, params, adapter, Services.MESSAGING_RECEIVER_CONTROL_REGISTRATION, Services.MESSAGING_RECEIVER_CONTROL_DEREGISTRATION);
}
exports.registerRequestHandler = registerRequestHandler;
/**
* Register a handler for topic control notifications
*
* @param internal the internal session
* @param params the registration parameters to send to the server
* @param adapter the registration adapter
*/
function registerTopicHandler(internal, params, adapter) {
return registerHandler(internal, params, adapter, Services.TOPIC_CONTROL_REGISTRATION, Services.TOPIC_CONTROL_DEREGISTRATION);
}
exports.registerTopicHandler = registerTopicHandler;