✨ feat(37回调): 添加大区集中转发接口

web-server/app/middleware/proxy.ts

@@ -1,4 +1,67 @@
+import { RegionModel } from '@db/Region';
+import { ServerlistModel } from '@db/Serverlist';
 import proxy from 'egg-http-proxy-middleware';
 
-module.exports = proxy;
+module.exports = () => {
+    return async function (ctx, next) {
+        if(!ctx.app.config.envToHost) {
+            let envToHost = new Map<string, string>();
+            let regions = await RegionModel.getAllRegion();
+            for(let { env, webHost } of regions) {
+                envToHost.set(env, webHost);
+            }
+            ctx.app.config.envToHost = envToHost;
+        }
+        if(!ctx.app.config.sidToHost) {
+            let envToHost = ctx.app.config.envToHost||new Map();
+            let sidToHost = new Map<string, string>();
+            let servers = await ServerlistModel.getAllServerList();
+            for(let { id, env } of servers) {
+                let webHost = envToHost.get(env);
+                sidToHost.set(id.toString(), webHost);   
+            }
+            ctx.app.config.sidToHost = sidToHost;
+        }
 
+        let options = {};
+        for(let [env, webHost] of ctx.app.config.envToHost) {
+            options[`/web/${env}/`] = {
+                target: webHost,
+                changeOrigin: true,
+                secure: true,
+                pathRewrite: function(path) {
+                    console.log('proxy', path, path.replace(`/web/${env}/`, '/web/'))
+                    return path.replace(`/web/${env}/`, '/web/') 
+                }
+            }
+        }
+        if(ctx.request.header['is-proxy'] != 'true') {
+            let url = getProxyUrl(ctx.request.url);
+            if(url) {
+                let sid = ctx.request.method == 'GET'? ctx.query.sid.toString(): ctx.request.body.sid.toString();
+                options[url] = {
+                    target: ctx.app.config.sidToHost.get(sid),
+                    changeOrigin: true,
+                    secure: true,
+                    headers: { "is-proxy": "true" }
+                }
+            }
+        }
+
+        return proxy(options)(ctx, next);
+    };
+  };
+
+  function getProxyUrl(url: string) {
+    const urls = [
+        '/cb/treatusername',
+        '/cb/treatguildname',
+        '/cb/getguildbyuser',
+        '/cb/refundioscallback'
+    ];
+    for(let str of urls) {
+        if(url && url.startsWith(str)) {
+            return str;
+        }
+    }
+  }