feat：缓存与hash下载

src/controller/versionlist.controller.ts

@@ -1,16 +1,20 @@
 import { createHash } from "node:crypto";
 import { Pool } from "pg";
+import { ILibraries, ILibrariesMap, IVersion, IVersionPool } from "../types/versionlist.types.js";
 
 export class VersionListController {
-  versionCache: Version[];
+  versionCache: IVersion[];
   private pool: Pool;
   hashList: string[];
+  libmap: Map<string, ILibrariesMap>;
   constructor(pool: Pool) {
     this.pool = pool;
     this.versionCache = [];
     this.hashList = ["md5", "sha1", "sha256"];
+    this.libmap = new Map();
     this._refreshCache(); // 初始化缓存
     setInterval(this._refreshCache, 1000 * 60 * 60 * 2); // 2小时刷新缓存
+    setInterval(this._refreshLib,1000*60*60*1) // 1小时刷新libmap
   }
 
   async getVersionList() {
@@ -36,19 +40,19 @@ GROUP BY mcversion."version", mcversion."Type", mcversion."Date", variation."OSb
 ORDER BY "Date" DESC
 `)
     ).rows;
-    result.forEach((row: VersionPool) => {
+    result.forEach((row: IVersionPool) => {
       const url: string[] = [];
       for (const arch of row.arch) {
         url.push(`./mc/version/${row.version}/${arch}`);
+      }
       arr.push({
         id: row.version,
         type: row.Type,
         BuildType: "UWP",
-          Arch: ["x64", "x86"],
+        Arch: row.arch,
         url,
         time: row.Date,
       });
-      }
     });
     this.versionCache = arr;
   }
@@ -61,6 +65,15 @@ ORDER BY "Date" DESC
     ) {
       return;
     }
+    const ver = `${id}-${arch}`
+    
+    let value = this.libmap.get(ver)
+    if (value){
+      value.hits++
+      console.log("lib hits"+value.hits)
+      return {libraries:value.libraries}
+    }
+
     const r = (
       await this.pool.query(
         `
@@ -75,12 +88,14 @@ LIMIT 1
       )
     ).rows; // 获取版本id
 
-    const data = (
+    const data: ILibraries[] = (
       await this.pool.query(
         `
 SELECT "filePathName"."pathName",
        "filesHash"."size",
-       ${this.hashList.map(hash => `encode("filesHash"."${hash}", 'hex') as "${hash}"`).join(', ')}
+       ${this.hashList
+         .map((hash) => `encode("filesHash"."${hash}", 'hex') as "${hash}"`)
+         .join(", ")}
 FROM variation_files_data
 LEFT JOIN files ON files.id = variation_files_data."filesId"
 LEFT JOIN "filePathName" ON "filePathName".id = files."pathNameId"
@@ -89,22 +104,16 @@ WHERE variation_files_data."variationId" = $1
 `,
         [r[0].id]
       )
-    ).rows;
-    console.log(data);
-    return data;
+    ).rows; //获取信息
+    this.libmap.set(ver,{libraries:data,hits:0}) //初始化
+    return { libraries: data};
+  }
+
+  _refreshLib(){
+    this.libmap.forEach((val,key)=>{
+      if (val.hits<15){
+        this.libmap.delete(key);
+      }
+    })
   }
 }
-interface VersionPool {
-  id: number;
-  version: string;
-  Type: string;
-  Date: string;
-  arch: string;
-}
-
-interface Version {
-  id: string;
-  type: string;
-  url: string;
-  time: string;
-}

src/main.ts

@@ -1,10 +1,12 @@
 import express from "express";
 import config from "./utils/config.js";
 import versionlistRouter from "./router/versionlist.router.js";
+import downloadRouter from "./router/download.router.js";
 
 const app = express();
 
 app.use('/mc',versionlistRouter)
+app.use('/download',downloadRouter)
 app.listen(config.express.port,()=>{
     console.log(`server is running on port ${config.express.port}`);
 })

src/middleware/download.mw.ts

@@ -0,0 +1,9 @@
+import { Request, Response, NextFunction } from "express";
+export function hashMiddleware(req:Request,res:Response,next:NextFunction){
+    if (req.params.hash.length !== 32){
+        res.sendStatus(400);
+        return;
+    }
+    next();
+    return;
+}

src/router/download.router.ts

@@ -0,0 +1,14 @@
+import { Router, Request, Response } from "express";
+//import pool from "../utils/pgsql.js";
+import { hashMiddleware } from "../middleware/download.mw.js";
+
+const router = Router();
+
+//const map = new Map<string,string>();
+router.get("/:hash",hashMiddleware,(req:Request,res:Response)=>{
+    const hash = req.params.hash;
+    const hash1 = hash.substring(0,2)
+    res.redirect(302,`r2.cloudflare.com/${hash1}/${hash}`)
+})
+
+export default router;

src/router/versionlist.router.ts

@@ -6,8 +6,8 @@ const versionListController = new VersionListController(pool);
 const router = Router();
 
 router.get("/version_manifest", async (req: Request, res: Response) => {
-  const version = await versionListController.getVersionList();
-  res.status(200).json({ version });
+  const versions = await versionListController.getVersionList();
+  res.status(200).json({ versions });
 });
 
 router.get("/version/:id/:arch", async (req: Request, res: Response) => {
@@ -18,6 +18,6 @@ router.get("/version/:id/:arch", async (req: Request, res: Response) => {
         res.sendStatus(404);
         return;
     }
-    res.status(200).json({ libraries });
+    res.status(200).json(libraries);
 })
 export default router;

src/types/versionlist.types.ts

@@ -0,0 +1,27 @@
+export interface IVersionPool {
+  id: number;
+  version: string;
+  Type: string;
+  Date: string;
+  arch: string;
+}
+ 
+export interface IVersion {
+  id: string;
+  type: string;
+  url: string;
+  time: string;
+}
+
+export interface ILibraries {
+  pathName: string;
+  size: number;
+  md5: string;
+  sha1: string;
+  sha256: string;
+}
+
+export interface ILibrariesMap {
+  libraries: ILibraries[];
+  hits: number;
+}