/
container.ts
68 lines (62 loc) · 1.85 KB
/
container.ts
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import { Container, Data, SetOptions } from "../types.d.ts";
import { CACHE, TIMEOUT } from "./constant.ts";
export function createContainer(t?: number): Container {
const SECOND = 1000;
const objects = new Map<string, Data>();
const timeout = t ?? TIMEOUT;
const timeoutId = setInterval(() => {
const object: Data = {
key: CACHE,
value: {},
isExpired: false,
expiryTime: 0,
};
objects.set(CACHE, object);
}, timeout * SECOND);
return {
objects: () => objects,
size: () => objects.size,
clear: () => objects.clear(),
delete: (key: string) => objects.delete(key),
set: <T>(
key: string,
value: T,
options?: SetOptions,
) => {
const expirySeconds = options && options.expirySeconds
? options.expirySeconds
: TIMEOUT;
const isExpired = options && options.isExpired
? options?.isExpired
: false;
if (isExpired) {
const expiryTime = Date.now() + expirySeconds * 1000;
const object: Data = { key, value, isExpired, expiryTime };
const timeoutId = setTimeout(() => {
removeExpiredObject(object);
}, expirySeconds * SECOND);
object.timeoutId = timeoutId;
return objects.set(key, object);
} else {
objects.set(key, { key, value, isExpired, expiryTime: 0 });
}
},
get: <T>(key: string) => {
const object = objects.get(key);
if (object && !object.isExpired) return <T> object.value;
else if (object && object.isExpired && object.expiryTime > Date.now()) {
return <T> object.value;
}
return null;
},
clearInterval: () => {
return clearInterval(timeoutId);
},
};
function removeExpiredObject(object: Data) {
if (object.timeoutId) {
clearTimeout(object.timeoutId);
}
objects.delete(object.key);
}
}