177 lines
No EOL
3.6 KiB
JavaScript
177 lines
No EOL
3.6 KiB
JavaScript
const config = require('../config.json');
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const logger = require('./logger.js');
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const constants = require('./constants.js');
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const timeDiff = require('./util.js').timeDiff;
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const active = config.cache.active;
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const lifetime = config.cache.lifetime * 60000;
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let modep;
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const cache = new Map();
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function isActive() {
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return active;
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}
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function getLifetime() {
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return lifetime;
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}
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async function fill() {
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if (!isActive) {
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return;
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}
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const timestamp = new Date();
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logger.debug('filling cache...');
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clear();
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try {
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if (modep === undefined) {
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modep = require('./modep.js');
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}
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await modep.getBanks();
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await modep.getPedalboards();
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await modep.getDefaultPedalboard();
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await modep.getCurrentPedalboard();
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await modep.getCurrentPedals();
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logger.debug('cache filled after ' + timeDiff(timestamp) + 'ms');
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} catch (err) {
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logger.error('encountered an error while filling the cache after ' + timeDiff(timestamp) + 'ms');
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}
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}
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function clear() {
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cache.clear();
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}
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function validLifetime(timestamp) {
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if (timestamp === undefined) {
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return false;
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}
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if (lifetime === 0) {
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return true;
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}
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return (new Date().getTime() - timestamp) <= lifetime;
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}
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function getValue(key) {
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var value = cache.get(key);
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if (value === undefined) {
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return undefined;
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}
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if (!validLifetime(value.timestamp)) {
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resetValue(key)
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return undefined;
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}
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return cache.get(key).data;
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}
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function setValue(key, value) {
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if (!isActive) {
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return;
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}
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logger.debug('caching \'' + key + '\'...');
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cache.set(key, { data: value, timestamp: new Date().getTime() });
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}
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function resetValue(key) {
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cache.delete(key);
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}
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function getBanks() {
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return getValue(constants.CACHE_BANKS);
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}
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function clearBanks() {
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resetValue(constants.CACHE_BANKS);
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}
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function setBanks(value) {
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setValue(constants.CACHE_BANKS, value);
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}
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function getPedalboards() {
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return getValue(constants.CACHE_PEDALBOARDS);
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}
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function clearPedalboards() {
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resetValue(constants.CACHE_PEDALBOARDS);
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}
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function setPedalboards(value) {
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setValue(constants.CACHE_PEDALBOARDS, value);
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}
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function getCurrentPedalboard() {
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return getValue(constants.CACHE_PEDALBOARD_CURRENT);
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}
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function clearCurrentPedalboard() {
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resetValue(constants.CACHE_PEDALBOARD_CURRENT);
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}
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function setCurrentPedalboard(value) {
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setValue(constants.CACHE_PEDALBOARD_CURRENT, value);
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}
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function getDefaultPedalboard() {
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return getValue(constants.CACHE_PEDALBOARD_DEFAULT);
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}
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function clearDefaultPedalboard() {
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resetValue(constants.CACHE_PEDALBOARD_DEFAULT);
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}
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function setDefaultPedalboard(value) {
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setValue(constants.CACHE_PEDALBOARD_DEFAULT, value);
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}
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function getCurrentPedals() {
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return getValue(constants.CACHE_PEDALS);
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}
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function clearCurrentPedals() {
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resetValue(constants.CACHE_PEDALS);
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}
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function setCurrentPedals(value) {
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setValue(constants.CACHE_PEDALS, value);
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}
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function getInfo() {
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return getValue(constants.CACHE_INFO);
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}
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function clearInfo() {
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resetValue(constants.CACHE_INFO);
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}
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function setInfo(value) {
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setValue(constants.CACHE_INFO, value);
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}
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module.exports = {
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isActive,
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getLifetime,
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fill,
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clear,
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getBanks,
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clearBanks,
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setBanks,
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getPedalboards,
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clearPedalboards,
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setPedalboards,
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getDefaultPedalboard,
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clearDefaultPedalboard,
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setDefaultPedalboard,
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getCurrentPedalboard,
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clearCurrentPedalboard,
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setCurrentPedalboard,
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getCurrentPedals,
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clearCurrentPedals,
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setCurrentPedals,
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getInfo,
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clearInfo,
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setInfo
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} |