560 lines
24 KiB
JavaScript
560 lines
24 KiB
JavaScript
"use strict";
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var __assign = (this && this.__assign) || function () {
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__assign = Object.assign || function(t) {
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for (var s, i = 1, n = arguments.length; i < n; i++) {
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s = arguments[i];
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for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
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t[p] = s[p];
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}
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return t;
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};
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return __assign.apply(this, arguments);
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};
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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return new (P || (P = Promise))(function (resolve, reject) {
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function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
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function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
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function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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});
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};
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var __generator = (this && this.__generator) || function (thisArg, body) {
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var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
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return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
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function verb(n) { return function (v) { return step([n, v]); }; }
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function step(op) {
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if (f) throw new TypeError("Generator is already executing.");
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while (_) try {
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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;
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if (y = 0, t) op = [op[0] & 2, t.value];
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switch (op[0]) {
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case 0: case 1: t = op; break;
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case 4: _.label++; return { value: op[1], done: false };
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case 5: _.label++; y = op[1]; op = [0]; continue;
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case 7: op = _.ops.pop(); _.trys.pop(); continue;
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default:
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if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
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if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
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if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
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if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
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if (t[2]) _.ops.pop();
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_.trys.pop(); continue;
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}
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op = body.call(thisArg, _);
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} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
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if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
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}
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};
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var __spreadArrays = (this && this.__spreadArrays) || function () {
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for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;
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for (var r = Array(s), k = 0, i = 0; i < il; i++)
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for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)
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r[k] = a[j];
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return r;
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.SubscriptionClient = void 0;
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var _global = typeof global !== 'undefined' ? global : (typeof window !== 'undefined' ? window : {});
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var NativeWebSocket = _global.WebSocket || _global.MozWebSocket;
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var Backoff = require("backo2");
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var eventemitter3_1 = require("eventemitter3");
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var is_string_1 = require("./utils/is-string");
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var is_object_1 = require("./utils/is-object");
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var printer_1 = require("graphql/language/printer");
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var getOperationAST_1 = require("graphql/utilities/getOperationAST");
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var symbol_observable_1 = require("symbol-observable");
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var protocol_1 = require("./protocol");
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var defaults_1 = require("./defaults");
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var message_types_1 = require("./message-types");
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var SubscriptionClient = (function () {
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function SubscriptionClient(url, options, webSocketImpl, webSocketProtocols) {
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var _a = (options || {}), _b = _a.connectionCallback, connectionCallback = _b === void 0 ? undefined : _b, _c = _a.connectionParams, connectionParams = _c === void 0 ? {} : _c, _d = _a.minTimeout, minTimeout = _d === void 0 ? defaults_1.MIN_WS_TIMEOUT : _d, _e = _a.timeout, timeout = _e === void 0 ? defaults_1.WS_TIMEOUT : _e, _f = _a.reconnect, reconnect = _f === void 0 ? false : _f, _g = _a.reconnectionAttempts, reconnectionAttempts = _g === void 0 ? Infinity : _g, _h = _a.lazy, lazy = _h === void 0 ? false : _h, _j = _a.inactivityTimeout, inactivityTimeout = _j === void 0 ? 0 : _j, _k = _a.wsOptionArguments, wsOptionArguments = _k === void 0 ? [] : _k;
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this.wsImpl = webSocketImpl || NativeWebSocket;
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if (!this.wsImpl) {
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throw new Error('Unable to find native implementation, or alternative implementation for WebSocket!');
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}
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this.wsProtocols = webSocketProtocols || protocol_1.GRAPHQL_WS;
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this.connectionCallback = connectionCallback;
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this.url = url;
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this.operations = {};
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this.nextOperationId = 0;
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this.minWsTimeout = minTimeout;
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this.wsTimeout = timeout;
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this.unsentMessagesQueue = [];
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this.reconnect = reconnect;
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this.reconnecting = false;
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this.reconnectionAttempts = reconnectionAttempts;
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this.lazy = !!lazy;
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this.inactivityTimeout = inactivityTimeout;
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this.closedByUser = false;
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this.backoff = new Backoff({ jitter: 0.5 });
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this.eventEmitter = new eventemitter3_1.EventEmitter();
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this.middlewares = [];
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this.client = null;
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this.maxConnectTimeGenerator = this.createMaxConnectTimeGenerator();
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this.connectionParams = this.getConnectionParams(connectionParams);
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this.wsOptionArguments = wsOptionArguments;
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if (!this.lazy) {
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this.connect();
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}
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}
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Object.defineProperty(SubscriptionClient.prototype, "status", {
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get: function () {
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if (this.client === null) {
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return this.wsImpl.CLOSED;
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}
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return this.client.readyState;
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},
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enumerable: false,
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configurable: true
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});
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SubscriptionClient.prototype.close = function (isForced, closedByUser) {
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if (isForced === void 0) { isForced = true; }
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if (closedByUser === void 0) { closedByUser = true; }
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this.clearInactivityTimeout();
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if (this.client !== null) {
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this.closedByUser = closedByUser;
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if (isForced) {
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this.clearCheckConnectionInterval();
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this.clearMaxConnectTimeout();
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this.clearTryReconnectTimeout();
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this.unsubscribeAll();
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this.sendMessage(undefined, message_types_1.default.GQL_CONNECTION_TERMINATE, null);
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}
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this.client.close();
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this.client.onopen = null;
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this.client.onclose = null;
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this.client.onerror = null;
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this.client.onmessage = null;
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this.client = null;
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this.eventEmitter.emit('disconnected');
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if (!isForced) {
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this.tryReconnect();
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}
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}
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};
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SubscriptionClient.prototype.request = function (request) {
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var _a;
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var getObserver = this.getObserver.bind(this);
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var executeOperation = this.executeOperation.bind(this);
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var unsubscribe = this.unsubscribe.bind(this);
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var opId;
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this.clearInactivityTimeout();
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return _a = {},
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_a[symbol_observable_1.default] = function () {
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return this;
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},
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_a.subscribe = function (observerOrNext, onError, onComplete) {
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var observer = getObserver(observerOrNext, onError, onComplete);
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opId = executeOperation(request, function (error, result) {
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if (error === null && result === null) {
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if (observer.complete) {
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observer.complete();
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}
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}
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else if (error) {
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if (observer.error) {
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observer.error(error[0]);
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}
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}
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else {
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if (observer.next) {
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observer.next(result);
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}
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}
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});
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return {
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unsubscribe: function () {
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if (opId) {
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unsubscribe(opId);
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opId = null;
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}
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},
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};
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},
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_a;
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};
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SubscriptionClient.prototype.on = function (eventName, callback, context) {
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var handler = this.eventEmitter.on(eventName, callback, context);
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return function () {
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handler.off(eventName, callback, context);
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};
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};
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SubscriptionClient.prototype.onConnected = function (callback, context) {
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return this.on('connected', callback, context);
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};
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SubscriptionClient.prototype.onConnecting = function (callback, context) {
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return this.on('connecting', callback, context);
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};
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SubscriptionClient.prototype.onDisconnected = function (callback, context) {
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return this.on('disconnected', callback, context);
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};
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SubscriptionClient.prototype.onReconnected = function (callback, context) {
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return this.on('reconnected', callback, context);
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};
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SubscriptionClient.prototype.onReconnecting = function (callback, context) {
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return this.on('reconnecting', callback, context);
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};
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SubscriptionClient.prototype.onError = function (callback, context) {
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return this.on('error', callback, context);
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};
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SubscriptionClient.prototype.unsubscribeAll = function () {
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var _this = this;
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Object.keys(this.operations).forEach(function (subId) {
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_this.unsubscribe(subId);
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});
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};
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SubscriptionClient.prototype.applyMiddlewares = function (options) {
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var _this = this;
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return new Promise(function (resolve, reject) {
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var queue = function (funcs, scope) {
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var next = function (error) {
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if (error) {
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reject(error);
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}
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else {
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if (funcs.length > 0) {
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var f = funcs.shift();
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if (f) {
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f.applyMiddleware.apply(scope, [options, next]);
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}
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}
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else {
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resolve(options);
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}
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}
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};
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next();
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};
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queue(__spreadArrays(_this.middlewares), _this);
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});
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};
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SubscriptionClient.prototype.use = function (middlewares) {
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var _this = this;
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middlewares.map(function (middleware) {
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if (typeof middleware.applyMiddleware === 'function') {
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_this.middlewares.push(middleware);
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}
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else {
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throw new Error('Middleware must implement the applyMiddleware function.');
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}
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});
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return this;
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};
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SubscriptionClient.prototype.getConnectionParams = function (connectionParams) {
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return function () { return new Promise(function (resolve, reject) {
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if (typeof connectionParams === 'function') {
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try {
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return resolve(connectionParams.call(null));
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}
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catch (error) {
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return reject(error);
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}
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}
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resolve(connectionParams);
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}); };
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};
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SubscriptionClient.prototype.executeOperation = function (options, handler) {
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var _this = this;
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if (this.client === null) {
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this.connect();
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}
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var opId = this.generateOperationId();
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this.operations[opId] = { options: options, handler: handler };
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this.applyMiddlewares(options)
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.then(function (processedOptions) {
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_this.checkOperationOptions(processedOptions, handler);
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if (_this.operations[opId]) {
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_this.operations[opId] = { options: processedOptions, handler: handler };
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_this.sendMessage(opId, message_types_1.default.GQL_START, processedOptions);
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}
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})
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.catch(function (error) {
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_this.unsubscribe(opId);
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handler(_this.formatErrors(error));
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});
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return opId;
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};
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SubscriptionClient.prototype.getObserver = function (observerOrNext, error, complete) {
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if (typeof observerOrNext === 'function') {
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return {
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next: function (v) { return observerOrNext(v); },
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error: function (e) { return error && error(e); },
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complete: function () { return complete && complete(); },
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};
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}
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return observerOrNext;
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};
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SubscriptionClient.prototype.createMaxConnectTimeGenerator = function () {
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var minValue = this.minWsTimeout;
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var maxValue = this.wsTimeout;
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return new Backoff({
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min: minValue,
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max: maxValue,
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factor: 1.2,
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});
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};
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SubscriptionClient.prototype.clearCheckConnectionInterval = function () {
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if (this.checkConnectionIntervalId) {
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clearInterval(this.checkConnectionIntervalId);
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this.checkConnectionIntervalId = null;
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}
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};
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SubscriptionClient.prototype.clearMaxConnectTimeout = function () {
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if (this.maxConnectTimeoutId) {
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clearTimeout(this.maxConnectTimeoutId);
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this.maxConnectTimeoutId = null;
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}
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};
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SubscriptionClient.prototype.clearTryReconnectTimeout = function () {
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if (this.tryReconnectTimeoutId) {
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clearTimeout(this.tryReconnectTimeoutId);
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this.tryReconnectTimeoutId = null;
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}
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};
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SubscriptionClient.prototype.clearInactivityTimeout = function () {
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if (this.inactivityTimeoutId) {
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clearTimeout(this.inactivityTimeoutId);
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this.inactivityTimeoutId = null;
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}
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};
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SubscriptionClient.prototype.setInactivityTimeout = function () {
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var _this = this;
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if (this.inactivityTimeout > 0 && Object.keys(this.operations).length === 0) {
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this.inactivityTimeoutId = setTimeout(function () {
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if (Object.keys(_this.operations).length === 0) {
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_this.close();
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}
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}, this.inactivityTimeout);
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}
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};
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SubscriptionClient.prototype.checkOperationOptions = function (options, handler) {
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var query = options.query, variables = options.variables, operationName = options.operationName;
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if (!query) {
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throw new Error('Must provide a query.');
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}
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if (!handler) {
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throw new Error('Must provide an handler.');
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}
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if ((!is_string_1.default(query) && !getOperationAST_1.getOperationAST(query, operationName)) ||
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(operationName && !is_string_1.default(operationName)) ||
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(variables && !is_object_1.default(variables))) {
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throw new Error('Incorrect option types. query must be a string or a document,' +
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'`operationName` must be a string, and `variables` must be an object.');
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}
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};
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SubscriptionClient.prototype.buildMessage = function (id, type, payload) {
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var payloadToReturn = payload && payload.query ? __assign(__assign({}, payload), { query: typeof payload.query === 'string' ? payload.query : printer_1.print(payload.query) }) :
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payload;
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return {
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id: id,
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type: type,
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payload: payloadToReturn,
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};
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};
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SubscriptionClient.prototype.formatErrors = function (errors) {
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if (Array.isArray(errors)) {
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return errors;
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}
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if (errors && errors.errors) {
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return this.formatErrors(errors.errors);
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}
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if (errors && errors.message) {
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return [errors];
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}
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return [{
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name: 'FormatedError',
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message: 'Unknown error',
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originalError: errors,
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}];
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};
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SubscriptionClient.prototype.sendMessage = function (id, type, payload) {
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this.sendMessageRaw(this.buildMessage(id, type, payload));
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};
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SubscriptionClient.prototype.sendMessageRaw = function (message) {
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switch (this.status) {
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case this.wsImpl.OPEN:
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var serializedMessage = JSON.stringify(message);
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try {
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JSON.parse(serializedMessage);
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}
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catch (e) {
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this.eventEmitter.emit('error', new Error("Message must be JSON-serializable. Got: " + message));
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}
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this.client.send(serializedMessage);
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break;
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case this.wsImpl.CONNECTING:
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this.unsentMessagesQueue.push(message);
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break;
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default:
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if (!this.reconnecting) {
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this.eventEmitter.emit('error', new Error('A message was not sent because socket is not connected, is closing or ' +
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'is already closed. Message was: ' + JSON.stringify(message)));
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}
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}
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};
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SubscriptionClient.prototype.generateOperationId = function () {
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return String(++this.nextOperationId);
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};
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SubscriptionClient.prototype.tryReconnect = function () {
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var _this = this;
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if (!this.reconnect || this.backoff.attempts >= this.reconnectionAttempts) {
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return;
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}
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if (!this.reconnecting) {
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Object.keys(this.operations).forEach(function (key) {
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_this.unsentMessagesQueue.push(_this.buildMessage(key, message_types_1.default.GQL_START, _this.operations[key].options));
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});
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this.reconnecting = true;
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}
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this.clearTryReconnectTimeout();
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var delay = this.backoff.duration();
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this.tryReconnectTimeoutId = setTimeout(function () {
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_this.connect();
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}, delay);
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};
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SubscriptionClient.prototype.flushUnsentMessagesQueue = function () {
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var _this = this;
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this.unsentMessagesQueue.forEach(function (message) {
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_this.sendMessageRaw(message);
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});
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this.unsentMessagesQueue = [];
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};
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SubscriptionClient.prototype.checkConnection = function () {
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if (this.wasKeepAliveReceived) {
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this.wasKeepAliveReceived = false;
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return;
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}
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if (!this.reconnecting) {
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this.close(false, true);
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}
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};
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SubscriptionClient.prototype.checkMaxConnectTimeout = function () {
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var _this = this;
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this.clearMaxConnectTimeout();
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this.maxConnectTimeoutId = setTimeout(function () {
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if (_this.status !== _this.wsImpl.OPEN) {
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_this.reconnecting = true;
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_this.close(false, true);
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}
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}, this.maxConnectTimeGenerator.duration());
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};
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SubscriptionClient.prototype.connect = function () {
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var _a;
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var _this = this;
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this.client = new ((_a = this.wsImpl).bind.apply(_a, __spreadArrays([void 0, this.url, this.wsProtocols], this.wsOptionArguments)))();
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this.checkMaxConnectTimeout();
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this.client.onopen = function () { return __awaiter(_this, void 0, void 0, function () {
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var connectionParams, error_1;
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return __generator(this, function (_a) {
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switch (_a.label) {
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case 0:
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if (!(this.status === this.wsImpl.OPEN)) return [3, 4];
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this.clearMaxConnectTimeout();
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this.closedByUser = false;
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this.eventEmitter.emit(this.reconnecting ? 'reconnecting' : 'connecting');
|
|
_a.label = 1;
|
|
case 1:
|
|
_a.trys.push([1, 3, , 4]);
|
|
return [4, this.connectionParams()];
|
|
case 2:
|
|
connectionParams = _a.sent();
|
|
this.sendMessage(undefined, message_types_1.default.GQL_CONNECTION_INIT, connectionParams);
|
|
this.flushUnsentMessagesQueue();
|
|
return [3, 4];
|
|
case 3:
|
|
error_1 = _a.sent();
|
|
this.sendMessage(undefined, message_types_1.default.GQL_CONNECTION_ERROR, error_1);
|
|
this.flushUnsentMessagesQueue();
|
|
return [3, 4];
|
|
case 4: return [2];
|
|
}
|
|
});
|
|
}); };
|
|
this.client.onclose = function () {
|
|
if (!_this.closedByUser) {
|
|
_this.close(false, false);
|
|
}
|
|
};
|
|
this.client.onerror = function (err) {
|
|
_this.eventEmitter.emit('error', err);
|
|
};
|
|
this.client.onmessage = function (_a) {
|
|
var data = _a.data;
|
|
_this.processReceivedData(data);
|
|
};
|
|
};
|
|
SubscriptionClient.prototype.processReceivedData = function (receivedData) {
|
|
var parsedMessage;
|
|
var opId;
|
|
try {
|
|
parsedMessage = JSON.parse(receivedData);
|
|
opId = parsedMessage.id;
|
|
}
|
|
catch (e) {
|
|
throw new Error("Message must be JSON-parseable. Got: " + receivedData);
|
|
}
|
|
if ([message_types_1.default.GQL_DATA,
|
|
message_types_1.default.GQL_COMPLETE,
|
|
message_types_1.default.GQL_ERROR,
|
|
].indexOf(parsedMessage.type) !== -1 && !this.operations[opId]) {
|
|
this.unsubscribe(opId);
|
|
return;
|
|
}
|
|
switch (parsedMessage.type) {
|
|
case message_types_1.default.GQL_CONNECTION_ERROR:
|
|
if (this.connectionCallback) {
|
|
this.connectionCallback(parsedMessage.payload);
|
|
}
|
|
break;
|
|
case message_types_1.default.GQL_CONNECTION_ACK:
|
|
this.eventEmitter.emit(this.reconnecting ? 'reconnected' : 'connected', parsedMessage.payload);
|
|
this.reconnecting = false;
|
|
this.backoff.reset();
|
|
this.maxConnectTimeGenerator.reset();
|
|
if (this.connectionCallback) {
|
|
this.connectionCallback();
|
|
}
|
|
break;
|
|
case message_types_1.default.GQL_COMPLETE:
|
|
var handler = this.operations[opId].handler;
|
|
delete this.operations[opId];
|
|
handler.call(this, null, null);
|
|
break;
|
|
case message_types_1.default.GQL_ERROR:
|
|
this.operations[opId].handler(this.formatErrors(parsedMessage.payload), null);
|
|
delete this.operations[opId];
|
|
break;
|
|
case message_types_1.default.GQL_DATA:
|
|
var parsedPayload = !parsedMessage.payload.errors ?
|
|
parsedMessage.payload : __assign(__assign({}, parsedMessage.payload), { errors: this.formatErrors(parsedMessage.payload.errors) });
|
|
this.operations[opId].handler(null, parsedPayload);
|
|
break;
|
|
case message_types_1.default.GQL_CONNECTION_KEEP_ALIVE:
|
|
var firstKA = typeof this.wasKeepAliveReceived === 'undefined';
|
|
this.wasKeepAliveReceived = true;
|
|
if (firstKA) {
|
|
this.checkConnection();
|
|
}
|
|
if (this.checkConnectionIntervalId) {
|
|
clearInterval(this.checkConnectionIntervalId);
|
|
this.checkConnection();
|
|
}
|
|
this.checkConnectionIntervalId = setInterval(this.checkConnection.bind(this), this.wsTimeout);
|
|
break;
|
|
default:
|
|
throw new Error('Invalid message type!');
|
|
}
|
|
};
|
|
SubscriptionClient.prototype.unsubscribe = function (opId) {
|
|
if (this.operations[opId]) {
|
|
delete this.operations[opId];
|
|
this.setInactivityTimeout();
|
|
this.sendMessage(opId, message_types_1.default.GQL_STOP, undefined);
|
|
}
|
|
};
|
|
return SubscriptionClient;
|
|
}());
|
|
exports.SubscriptionClient = SubscriptionClient;
|
|
//# sourceMappingURL=client.js.map
|