keycloak-demo/utils/cache.js

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2021-09-01 11:30:21 +00:00
class Cache {
constructor() {
this.kv = {};
}
/**
* @param {string} key
* @param {string} value
* @param {boolean?} noOverride
*/
set(key, value, noOverride) {
if (noOverride && key in this.kv) {
throw new Error("key exists");
}
this.kv[key] = value;
}
/**
* @param {string} key
* @return {string?}
*/
get(key) {
return this.kv[key] || null;
}
/**
* @param {string[]} keys
*/
del(...keys) {
for (const key of keys) {
delete this.kv[key];
}
}
}
let cache = null;
exports.new = function () {
if (cache) throw new Error("cache already initiate");
cache = new Cache();
return cache;
};
exports.get = function () {
if (!cache) throw new Error("cache not initiate");
return cache;
};