124 lines
4.2 KiB
JavaScript
124 lines
4.2 KiB
JavaScript
/*
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* (c) Copyright Ascensio System SIA 2010-2024
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*
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* This program is a free software product. You can redistribute it and/or
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* modify it under the terms of the GNU Affero General Public License (AGPL)
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* version 3 as published by the Free Software Foundation. In accordance with
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* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
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* that Ascensio System SIA expressly excludes the warranty of non-infringement
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* of any third-party rights.
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*
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* This program is distributed WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
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* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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*
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* You can contact Ascensio System SIA at 20A-6 Ernesta Birznieka-Upish
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* street, Riga, Latvia, EU, LV-1050.
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*
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* The interactive user interfaces in modified source and object code versions
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* of the Program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU AGPL version 3.
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*
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* Pursuant to Section 7(b) of the License you must retain the original Product
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* logo when distributing the program. Pursuant to Section 7(e) we decline to
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* grant you any rights under trademark law for use of our trademarks.
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*
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* All the Product's GUI elements, including illustrations and icon sets, as
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* well as technical writing content are licensed under the terms of the
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* Creative Commons Attribution-ShareAlike 4.0 International. See the License
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* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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*
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*/
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'use strict';
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const fs = require('fs');
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/**
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* Reloads an NPM module by clearing it from require.cache and re-requiring it
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* @param {string} moduleName - Name of the module to reload
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* @returns {Object} The freshly loaded module
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*/
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function reloadNpmModule(moduleName) {
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try {
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const moduleId = require.resolve(moduleName);
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delete require.cache[moduleId];
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return require(moduleName);
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} catch (error) {
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console.error(`Failed to reload module ${moduleName}:`, error.message);
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throw error;
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}
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}
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// Backup original NODE_CONFIG to avoid growing environment
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const prevNodeConfig = process.env.NODE_CONFIG;
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let nodeConfigOverridden = false;
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let baseConfigSnapshot = null;
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/**
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* Returns the base configuration as plain object before runtime configuration is applied
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* @returns {Object} Base configuration object
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*/
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function getBaseConfig() {
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return baseConfigSnapshot;
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}
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/**
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* Requires config module with runtime configuration support.
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* Temporarily sets NODE_CONFIG for reload, then restores environment to prevent E2BIG.
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* @param {Object} opt_additionalConfig - Additional configuration to merge
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* @returns {Object} config module
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*/
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function requireConfigWithRuntime(opt_additionalConfig) {
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let config = require('config');
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try {
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// Save base config before reloading with runtime modifications
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baseConfigSnapshot = config.util.toObject();
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const configFilePath = config.get('runtimeConfig.filePath');
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if (configFilePath) {
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const configData = fs.readFileSync(configFilePath, 'utf8');
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// Parse existing NODE_CONFIG or start with empty object
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let curNodeConfig = JSON.parse(process.env.NODE_CONFIG ?? '{}');
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const fileConfig = JSON.parse(configData);
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// Merge configurations: NODE_CONFIG -> runtime -> additional
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curNodeConfig = config.util.extendDeep(curNodeConfig, fileConfig);
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if (opt_additionalConfig) {
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curNodeConfig = config.util.extendDeep(curNodeConfig, opt_additionalConfig);
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}
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// Temporarily set NODE_CONFIG only to reload the config module
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process.env.NODE_CONFIG = JSON.stringify(curNodeConfig);
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nodeConfigOverridden = true;
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config = reloadNpmModule('config');
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}
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} catch (err) {
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if (err.code !== 'ENOENT') {
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console.error('Failed to load runtime config: %s', err.stack);
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}
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}
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return config;
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}
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function finalizeConfigWithRuntime() {
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// Restore original NODE_CONFIG to keep env small and avoid E2BIG on Windows/pkg
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if (nodeConfigOverridden) {
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if (typeof prevNodeConfig === 'undefined') {
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delete process.env.NODE_CONFIG;
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} else {
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process.env.NODE_CONFIG = prevNodeConfig;
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}
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}
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}
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module.exports = {
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reloadNpmModule,
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getBaseConfig,
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requireConfigWithRuntime,
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finalizeConfigWithRuntime
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};
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