uptime-kuma/server/modules/apicache/memory-cache.js

60 lines
1.2 KiB
JavaScript

function MemoryCache() {
this.cache = {};
this.size = 0;
}
MemoryCache.prototype.add = function (key, value, time, timeoutCallback) {
let old = this.cache[key];
let instance = this;
let entry = {
value: value,
expire: time + Date.now(),
timeout: setTimeout(function () {
instance.delete(key);
return timeoutCallback && typeof timeoutCallback === "function" && timeoutCallback(value, key);
}, time)
};
this.cache[key] = entry;
this.size = Object.keys(this.cache).length;
return entry;
};
MemoryCache.prototype.delete = function (key) {
let entry = this.cache[key];
if (entry) {
clearTimeout(entry.timeout);
}
delete this.cache[key];
this.size = Object.keys(this.cache).length;
return null;
};
MemoryCache.prototype.get = function (key) {
let entry = this.cache[key];
return entry;
};
MemoryCache.prototype.getValue = function (key) {
let entry = this.get(key);
return entry && entry.value;
};
MemoryCache.prototype.clear = function () {
Object.keys(this.cache).forEach(function (key) {
this.delete(key);
}, this);
return true;
};
module.exports = MemoryCache;