107 lines
3.4 KiB
JavaScript
107 lines
3.4 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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var _promise = require('babel-runtime/core-js/promise');
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var _promise2 = _interopRequireDefault(_promise);
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var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck');
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var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);
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var _createClass2 = require('babel-runtime/helpers/createClass');
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var _createClass3 = _interopRequireDefault(_createClass2);
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var _connectionHolder = require('./connection-holder');
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var _connectionHolder2 = _interopRequireDefault(_connectionHolder);
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var _driver = require('../driver');
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var _streamObserver = require('./stream-observer');
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var _streamObserver2 = _interopRequireDefault(_streamObserver);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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/**
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* Verifies connectivity using the given connection provider.
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*/
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var ConnectivityVerifier = function () {
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/**
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* @constructor
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* @param {ConnectionProvider} connectionProvider the provider to obtain connections from.
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* @param {function} successCallback a callback to invoke when verification succeeds.
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*/
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function ConnectivityVerifier(connectionProvider, successCallback) {
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(0, _classCallCheck3.default)(this, ConnectivityVerifier);
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this._connectionProvider = connectionProvider;
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this._successCallback = successCallback;
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}
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(0, _createClass3.default)(ConnectivityVerifier, [{
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key: 'verify',
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value: function verify() {
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var _this = this;
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acquireAndReleaseDummyConnection(this._connectionProvider).then(function (serverInfo) {
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if (_this._successCallback) {
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_this._successCallback(serverInfo);
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}
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}).catch(function (ignoredError) {});
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}
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}]);
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return ConnectivityVerifier;
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}();
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/**
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* @private
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* @param {ConnectionProvider} connectionProvider the provider to obtain connections from.
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* @return {Promise<object>} promise resolved with server info or rejected with error.
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*/
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/**
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* Copyright (c) 2002-2018 "Neo4j,"
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* Neo4j Sweden AB [http://neo4j.com]
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*
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* This file is part of Neo4j.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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exports.default = ConnectivityVerifier;
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function acquireAndReleaseDummyConnection(connectionProvider) {
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var connectionHolder = new _connectionHolder2.default(_driver.READ, connectionProvider);
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connectionHolder.initializeConnection();
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var dummyObserver = new _streamObserver2.default();
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var connectionPromise = connectionHolder.getConnection(dummyObserver);
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return connectionPromise.then(function (connection) {
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// able to establish a connection
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return connectionHolder.close().then(function () {
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return connection.server;
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});
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}).catch(function (error) {
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// failed to establish a connection
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return connectionHolder.close().catch(function (ignoredError) {
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// ignore connection release error
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}).then(function () {
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return _promise2.default.reject(error);
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});
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});
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} |