121 lines
3.2 KiB
TypeScript
121 lines
3.2 KiB
TypeScript
import { createHash } from "node:crypto";
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import { Pool } from "pg";
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import { ILibraries, ILibrariesMap, IVersion, IVersionPool } from "../types/versionlist.types.js";
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export class VersionListController {
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versionCache: IVersion[];
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private pool: Pool;
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hashList: string[];
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libmap: Map<string, ILibrariesMap>;
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constructor(pool: Pool) {
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this.pool = pool;
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this.versionCache = [];
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this.hashList = ["md5", "sha1", "sha256"];
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this.libmap = new Map();
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this._refreshCache(); // 初始化缓存
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setInterval(this._refreshCache.bind(this), 1000 * 60 * 60 * 2); // 2小时刷新缓存（傻逼this）
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setInterval(this._refreshLib.bind(this),1000*60*60*1) // 1小时刷新libmap
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}
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async getVersionList() {
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if (this.versionCache.length === 0) {
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await this._refreshCache();
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}
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console.log("use cache");
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return this.versionCache;
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}
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private async _refreshCache() {
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const arr: any[] = [];
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const result = (
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await this.pool.query(`
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SELECT mcversion."version",
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mcversion."Type",
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mcversion."Date",
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array_agg(DISTINCT variation.arch) as arch,
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variation."OSbuild"
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FROM variation
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LEFT JOIN mcversion ON mcversion.id = variation."MCVId"
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GROUP BY mcversion."version", mcversion."Type", mcversion."Date", variation."OSbuild"
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ORDER BY "Date" DESC
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`)
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).rows;
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result.forEach((row: IVersionPool) => {
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const url: string[] = [];
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for (const arch of row.arch) {
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url.push(`./mc/version/${row.version}/${arch}`);
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}
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arr.push({
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id: row.version,
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type: row.Type,
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BuildType: "UWP",
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OSBuild: row.OSbuild,
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Arch: row.arch,
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url,
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time: row.Date,
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});
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});
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this.versionCache = arr;
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}
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async getLibraries(id: string, arch: string) {
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const archs = ["x64", "x86", "arm"];
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if (
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!archs.includes(arch) ||
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this.versionCache.filter((v) => v.id === id).length === 0
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) {
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return;
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}
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const ver = `${id}-${arch}`
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let value = this.libmap.get(ver)
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if (value){
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value.hits++
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console.log("lib hits"+value.hits)
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return {libraries:value.libraries}
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}
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const r = (
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await this.pool.query(
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`
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SELECT variation.id
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FROM variation
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LEFT JOIN mcversion ON mcversion.id = variation."MCVId"
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WHERE mcversion."versionHash" = $1
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AND variation.arch = $2
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LIMIT 1
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`,
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[createHash("sha256").update(id).digest(), arch]
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)
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).rows; // 获取版本id
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const data: ILibraries[] = (
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await this.pool.query(
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`
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SELECT "filePathName"."pathName",
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"filesHash"."size",
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${this.hashList
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.map((hash) => `encode("filesHash"."${hash}", 'hex') as "${hash}"`)
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.join(", ")}
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FROM variation_files_data
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LEFT JOIN files ON files.id = variation_files_data."filesId"
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LEFT JOIN "filePathName" ON "filePathName".id = files."pathNameId"
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LEFT JOIN "filesHash" ON "filesHash".id = files."hashId"
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WHERE variation_files_data."variationId" = $1
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`,
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[r[0].id]
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)
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).rows; //获取信息
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this.libmap.set(ver,{libraries:data,hits:0}) //初始化
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return { libraries: data};
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}
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_refreshLib(){
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this.libmap.forEach((val,key)=>{
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if (val.hits<15){
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this.libmap.delete(key);
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}
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})
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}
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}
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