59 lines
1.3 KiB
JavaScript
59 lines
1.3 KiB
JavaScript
const fs = require('fs');
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const _ = require('lodash');
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const ENCODING = 'utf8';
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module.exports = {
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start,
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};
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function start(name, targetPath, options = {}) {
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const { allowMalformedOnStartup } = options;
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let cachedValue = null;
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try {
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const text = fs.readFileSync(targetPath, ENCODING);
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cachedValue = JSON.parse(text);
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console.log(`config/get: Successfully read ${name} config file`);
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if (!cachedValue) {
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console.log(
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`config/get: ${name} config value was falsy, cache is now empty object`
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);
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cachedValue = Object.create(null);
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}
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} catch (error) {
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if (!allowMalformedOnStartup && error.code !== 'ENOENT') {
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throw error;
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}
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console.log(
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`config/get: Did not find ${name} config file, cache is now empty object`
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);
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cachedValue = Object.create(null);
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}
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function get(keyPath) {
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return _.get(cachedValue, keyPath);
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}
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function set(keyPath, value) {
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_.set(cachedValue, keyPath, value);
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console.log(`config/set: Saving ${name} config to disk`);
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const text = JSON.stringify(cachedValue, null, ' ');
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fs.writeFileSync(targetPath, text, ENCODING);
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}
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function remove() {
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console.log(`config/remove: Deleting ${name} config from disk`);
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fs.unlinkSync(targetPath);
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cachedValue = Object.create(null);
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}
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return {
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set,
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get,
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remove,
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};
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}
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