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https://github.com/ether/etherpad-lite.git
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78 lines
2.4 KiB
JavaScript
78 lines
2.4 KiB
JavaScript
'use strict';
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/**
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* The DB Module provides a database initialized with the settings
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* provided by the settings module
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*/
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/*
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* 2011 Peter 'Pita' Martischka (Primary Technology Ltd)
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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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const ueberDB = require('ueberdb2');
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const settings = require('../utils/Settings');
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const log4js = require('log4js');
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const util = require('util');
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// set database settings
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const db =
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new ueberDB.database(settings.dbType, settings.dbSettings, null, log4js.getLogger('ueberDB'));
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/**
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* The UeberDB Object that provides the database functions
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*/
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exports.db = null;
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/**
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* Initializes the database with the settings provided by the settings module
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* @param {Function} callback
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*/
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exports.init = async () => await new Promise((resolve, reject) => {
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db.init((err) => {
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if (err) {
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// there was an error while initializing the database, output it and stop
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console.error('ERROR: Problem while initalizing the database');
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console.error(err.stack ? err.stack : err);
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process.exit(1);
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}
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// everything ok, set up Promise-based methods
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['get', 'set', 'findKeys', 'getSub', 'setSub', 'remove'].forEach((fn) => {
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exports[fn] = util.promisify(db[fn].bind(db));
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});
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// set up wrappers for get and getSub that can't return "undefined"
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const get = exports.get;
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exports.get = async (key) => {
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const result = await get(key);
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return (result === undefined) ? null : result;
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};
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const getSub = exports.getSub;
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exports.getSub = async (key, sub) => {
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const result = await getSub(key, sub);
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return (result === undefined) ? null : result;
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};
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// exposed for those callers that need the underlying raw API
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exports.db = db;
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resolve();
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});
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});
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exports.shutdown = async (hookName, context) => {
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await util.promisify(db.close.bind(db))();
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console.log('Database closed');
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};
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