diffusion
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Diffusion JavaScript client
136 lines (135 loc) • 7.16 kB
JavaScript
;
/**
* @module Client
*/
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.ServiceLocatorImpl = void 0;
var command_header_1 = require("./../services/command-header");
var logger = require("./../util/logger");
var log = logger.create('ServiceLocator');
/**
* A class allowing to locate services and create {@link ServiceSender}s for them
*/
var ServiceLocatorImpl = /** @class */ (function () {
/**
* Create a new ServiceLocator instance
*
* @param internalSession the internal session
* @param serialisers the map of serialisers
* @param serviceAdapter the service adapter
*/
function ServiceLocatorImpl(context, serviceAdapter) {
this.context = context;
this.serviceAdapter = serviceAdapter;
}
/**
* Obtain a service from a service definition
*
* @param service the service definition
* @return a sender that allows to send requests for the service
*/
ServiceLocatorImpl.prototype.obtain = function (service) {
var _this = this;
var requestSerialiser = service.request;
var responseSerialiser = service.response;
var reference = {
send: function (req, callback) {
if (callback === void 0) { callback = function () { }; }
return __awaiter(_this, void 0, void 0, function () {
var handler, conversations, conversationId;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
handler = {
onOpen: function (cid) {
var header = new command_header_1.CommandHeader(service.id, cid);
try {
_this.serviceAdapter.sendRequest(header, req, requestSerialiser);
}
catch (e) {
callback(e);
throw e;
}
},
onResponse: function (cid, input) {
var response;
try {
response = responseSerialiser.read(input);
}
catch (e) {
log.debug("Failed to deserialise response from service " + service.id, e.stack);
callback(e);
return true;
}
try {
callback(null, response);
}
catch (e) {
log.debug("Request callback for service '" + service.id + "' threw an error", e.stack);
try {
callback(e);
}
catch (e) {
log.debug("Failed to notify callback error for service '" + service.id + "'", e);
}
}
return true;
},
onDiscard: function (cid, err) {
callback(err);
}
};
conversations = this.context.getConversationSet();
return [4 /*yield*/, conversations.newConversation(handler)];
case 1:
conversationId = _a.sent();
return [2 /*return*/, function () {
conversations.discard(conversationId, new Error('Cancelled'));
}];
}
});
});
}
};
return reference;
};
return ServiceLocatorImpl;
}());
exports.ServiceLocatorImpl = ServiceLocatorImpl;