| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| /** |
| * @author Jorge Bay Gondra |
| */ |
| 'use strict'; |
| |
| const rcModule = require('./remote-connection'); |
| const RemoteConnection = rcModule.RemoteConnection; |
| const RemoteTraversal = rcModule.RemoteTraversal; |
| const utils = require('../utils'); |
| const Client = require('./client'); |
| const Bytecode = require('../process/bytecode'); |
| const OptionsStrategy = require('../process/traversal-strategy').OptionsStrategy; |
| |
| /** |
| * Represents the default {@link RemoteConnection} implementation. |
| */ |
| class DriverRemoteConnection extends RemoteConnection { |
| /** |
| * Creates a new instance of {@link DriverRemoteConnection}. |
| * @param {String} url The resource uri. |
| * @param {Object} [options] The connection options. |
| * @param {Array} [options.ca] Trusted certificates. |
| * @param {String|Array|Buffer} [options.cert] The certificate key. |
| * @param {String} [options.mimeType] The mime type to use. |
| * @param {String|Buffer} [options.pfx] The private key, certificate, and CA certs. |
| * @param {GraphSONReader} [options.reader] The reader to use. |
| * @param {Boolean} [options.rejectUnauthorized] Determines whether to verify or not the server certificate. |
| * @param {String} [options.traversalSource] The traversal source. Defaults to: 'g'. |
| * @param {GraphSONWriter} [options.writer] The writer to use. |
| * @param {Authenticator} [options.authenticator] The authentication handler to use. |
| * @param {Object} [options.headers] An associative array containing the additional header key/values for the initial request. |
| * @param {Boolean} [options.enableUserAgentOnConnect] Determines if a user agent will be sent during connection handshake. Defaults to: true |
| * @param {Boolean} [options.pingEnabled] Setup ping interval. Defaults to: true. |
| * @param {Number} [options.pingInterval] Ping request interval in ms if ping enabled. Defaults to: 60000. |
| * @param {Number} [options.pongTimeout] Timeout of pong response in ms after sending a ping. Defaults to: 30000. |
| * @constructor |
| */ |
| constructor(url, options = {}) { |
| super(url, options); |
| this._client = new Client(url, options); |
| } |
| |
| /** @override */ |
| open() { |
| return this._client.open(); |
| } |
| |
| /** @override */ |
| get isOpen() { |
| return this._client.isOpen; |
| } |
| |
| /** @override */ |
| submit(bytecode) { |
| const optionsStrategy = bytecode.sourceInstructions.find( |
| (i) => i[0] === 'withStrategies' && i[1] instanceof OptionsStrategy, |
| ); |
| const allowedKeys = [ |
| 'evaluationTimeout', |
| 'scriptEvaluationTimeout', |
| 'batchSize', |
| 'requestId', |
| 'userAgent', |
| 'materializeProperties', |
| ]; |
| |
| let requestOptions = undefined; |
| if (optionsStrategy !== undefined) { |
| requestOptions = {}; |
| const conf = optionsStrategy[1].configuration; |
| for (const key in conf) { |
| if (conf.hasOwnProperty(key) && allowedKeys.indexOf(key) > -1) { |
| requestOptions[key] = conf[key]; |
| } |
| } |
| } |
| |
| return this._client.submit(bytecode, null, requestOptions).then((result) => new RemoteTraversal(result.toArray())); |
| } |
| |
| /** @override */ |
| createSession() { |
| if (this.isSessionBound) { |
| throw new Error('Connection is already bound to a session - child sessions are not allowed'); |
| } |
| |
| // make sure a fresh session is used when starting a new transaction |
| const copiedOptions = Object.assign({}, this.options); |
| copiedOptions.session = utils.getUuid(); |
| return new DriverRemoteConnection(this.url, copiedOptions); |
| } |
| |
| /** @override */ |
| get isSessionBound() { |
| return this.options.session; |
| } |
| |
| /** @override */ |
| commit() { |
| return this._client.submit(Bytecode.GraphOp.commit, null); |
| } |
| |
| /** @override */ |
| rollback() { |
| return this._client.submit(Bytecode.GraphOp.rollback, null); |
| } |
| |
| /** @override */ |
| close() { |
| return this._client.close(); |
| } |
| |
| /** @override */ |
| addListener(...args) { |
| return this._client.addListener(...args); |
| } |
| |
| /** @override */ |
| removeListener(...args) { |
| return this._client.removeListener(...args); |
| } |
| } |
| |
| module.exports = DriverRemoteConnection; |