141 lines
4.0 KiB
JavaScript
141 lines
4.0 KiB
JavaScript
"use strict";
|
|
var __create = Object.create;
|
|
var __defProp = Object.defineProperty;
|
|
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
|
|
var __getOwnPropNames = Object.getOwnPropertyNames;
|
|
var __getProtoOf = Object.getPrototypeOf;
|
|
var __hasOwnProp = Object.prototype.hasOwnProperty;
|
|
var __name = (target, value) => __defProp(target, "name", { value, configurable: true });
|
|
var __export = (target, all) => {
|
|
for (var name in all)
|
|
__defProp(target, name, { get: all[name], enumerable: true });
|
|
};
|
|
var __copyProps = (to, from, except, desc) => {
|
|
if (from && typeof from === "object" || typeof from === "function") {
|
|
for (let key of __getOwnPropNames(from))
|
|
if (!__hasOwnProp.call(to, key) && key !== except)
|
|
__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
|
|
}
|
|
return to;
|
|
};
|
|
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
|
|
// If the importer is in node compatibility mode or this is not an ESM
|
|
// file that has been converted to a CommonJS file using a Babel-
|
|
// compatible transform (i.e. "__esModule" has not been set), then set
|
|
// "default" to the CommonJS "module.exports" for node compatibility.
|
|
isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
|
|
mod
|
|
));
|
|
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
|
|
|
|
// src/index.ts
|
|
var index_exports = {};
|
|
__export(index_exports, {
|
|
EndpointCache: () => EndpointCache
|
|
});
|
|
module.exports = __toCommonJS(index_exports);
|
|
|
|
// src/EndpointCache.ts
|
|
var import_lru_cache = __toESM(require("mnemonist/lru-cache"));
|
|
var EndpointCache = class {
|
|
static {
|
|
__name(this, "EndpointCache");
|
|
}
|
|
cache;
|
|
constructor(capacity) {
|
|
this.cache = new import_lru_cache.default(capacity);
|
|
}
|
|
/**
|
|
* Returns an un-expired endpoint for the given key.
|
|
*
|
|
* @param endpointsWithExpiry
|
|
* @returns
|
|
*/
|
|
getEndpoint(key) {
|
|
const endpointsWithExpiry = this.get(key);
|
|
if (!endpointsWithExpiry || endpointsWithExpiry.length === 0) {
|
|
return void 0;
|
|
}
|
|
const endpoints = endpointsWithExpiry.map((endpoint) => endpoint.Address);
|
|
return endpoints[Math.floor(Math.random() * endpoints.length)];
|
|
}
|
|
/**
|
|
* Returns un-expired endpoints for the given key.
|
|
*
|
|
* @param key
|
|
* @returns
|
|
*/
|
|
get(key) {
|
|
if (!this.has(key)) {
|
|
return;
|
|
}
|
|
const value = this.cache.get(key);
|
|
if (!value) {
|
|
return;
|
|
}
|
|
const now = Date.now();
|
|
const endpointsWithExpiry = value.filter((endpoint) => now < endpoint.Expires);
|
|
if (endpointsWithExpiry.length === 0) {
|
|
this.delete(key);
|
|
return void 0;
|
|
}
|
|
return endpointsWithExpiry;
|
|
}
|
|
/**
|
|
* Stores the endpoints passed for the key in cache.
|
|
* If not defined, uses empty string for the Address in endpoint.
|
|
* If not defined, uses one minute for CachePeriodInMinutes in endpoint.
|
|
* Stores milliseconds elapsed since the UNIX epoch in Expires param based
|
|
* on value provided in CachePeriodInMinutes.
|
|
*
|
|
* @param key
|
|
* @param endpoints
|
|
*/
|
|
set(key, endpoints) {
|
|
const now = Date.now();
|
|
this.cache.set(
|
|
key,
|
|
endpoints.map(({ Address, CachePeriodInMinutes }) => ({
|
|
Address,
|
|
Expires: now + CachePeriodInMinutes * 60 * 1e3
|
|
}))
|
|
);
|
|
}
|
|
/**
|
|
* Deletes the value for the given key in the cache.
|
|
*
|
|
* @param {string} key
|
|
*/
|
|
delete(key) {
|
|
this.cache.set(key, []);
|
|
}
|
|
/**
|
|
* Checks whether the key exists in cache.
|
|
*
|
|
* @param {string} key
|
|
* @returns {boolean}
|
|
*/
|
|
has(key) {
|
|
if (!this.cache.has(key)) {
|
|
return false;
|
|
}
|
|
const endpoints = this.cache.peek(key);
|
|
if (!endpoints) {
|
|
return false;
|
|
}
|
|
return endpoints.length > 0;
|
|
}
|
|
/**
|
|
* Clears the cache.
|
|
*/
|
|
clear() {
|
|
this.cache.clear();
|
|
}
|
|
};
|
|
// Annotate the CommonJS export names for ESM import in node:
|
|
|
|
0 && (module.exports = {
|
|
EndpointCache
|
|
});
|
|
|