135 lines
3.4 KiB
JavaScript
135 lines
3.4 KiB
JavaScript
const _ = require('lodash');
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const path = require('path');
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const fs = require('fs-extra');
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const branchFilename = __dirname + '/application_env';
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const propsToSave = [
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'dataDir',
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'tempDir',
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'logDir',
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'libDir',
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'inpx',
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'inpxFilterFile',
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'allowConfigRewrite',
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'allowUnsafeFilter',
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'accessPassword',
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'accessTimeout',
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'extendedSearch',
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'bookReadLink',
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'loggingEnabled',
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'logServerStats',
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'logQueries',
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'dbCacheSize',
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'maxFilesDirSize',
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'queryCacheEnabled',
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'queryCacheMemSize',
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'queryCacheDiskSize',
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'cacheCleanInterval',
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'inpxCheckInterval',
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'lowMemoryMode',
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'fullOptimization',
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'allowRemoteLib',
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'remoteLib',
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'server',
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'opds',
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'latestReleaseLink',
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'checkReleaseLink',
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'uiDefaults',
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];
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let instance = null;
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//singleton
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class ConfigManager {
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constructor() {
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if (!instance) {
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this.inited = false;
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instance = this;
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}
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return instance;
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}
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async init(defaultDataDir, configFile) {
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if (this.inited)
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throw new Error('already inited');
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this.branch = 'production';
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try {
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await fs.access(branchFilename);
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this.branch = (await fs.readFile(branchFilename, 'utf8')).trim();
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} catch (err) {
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//
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}
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process.env.NODE_ENV = this.branch;
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this.branchConfigFile = __dirname + `/${this.branch}.js`;
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const config = require(this.branchConfigFile);
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if (!defaultDataDir) {
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defaultDataDir = `${config.execDir}/.${config.name}`;
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}
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if (configFile) {
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config.configFile = path.resolve(configFile);
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} else {
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await fs.ensureDir(defaultDataDir);
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config.configFile = `${defaultDataDir}/config.json`;
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}
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this._config = config;
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this.inited = true;
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}
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get config() {
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if (!this.inited)
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throw new Error('not inited');
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return _.cloneDeep(this._config);
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}
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set config(value) {
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Object.assign(this._config, value);
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}
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async load() {
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try {
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if (!this.inited)
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throw new Error('not inited');
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if (await fs.pathExists(this._config.configFile)) {
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const data = JSON.parse(await fs.readFile(this._config.configFile, 'utf8'));
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const config = _.pick(data, propsToSave);
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this.config = config;
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//сохраним конфиг, если не все атрибуты присутствуют в файле конфига
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if (config.allowConfigRewrite) {
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for (const prop of propsToSave) {
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if (!Object.prototype.hasOwnProperty.call(config, prop)) {
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await this.save();
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break;
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}
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}
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}
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} else {
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await this.save();
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}
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} catch(e) {
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throw new Error(`Error while loading "${this._config.configFile}": ${e.message}`);
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}
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}
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async save() {
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if (!this.inited)
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throw new Error('not inited');
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const dataToSave = _.pick(this._config, propsToSave);
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await fs.writeFile(this._config.configFile, JSON.stringify(dataToSave, null, 4));
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}
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}
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module.exports = ConfigManager; |