feat: suppot unmount root fs

Author: bytemain

packages/sumi-core/src/client/index.ts

@@ -207,6 +207,14 @@ export class ClientApp extends BasicClientApp {
       ]);
     }
   }
+
+  unmountRootFS() {
+    const serverApp: IServerApp = this.injector.get(IServerApp);
+    if (serverApp) {
+      serverApp.unmountRootFS();
+    }
+  }
+
   async dispose() {
     super.dispose();
     this.disposer.dispose();

packages/sumi-core/src/common/types.ts

@@ -19,6 +19,7 @@ export const IServerApp = Symbol('IServerApp');
 
 export interface IServerApp {
   start(): Promise<void>;
+  unmountRootFS(): void;
   rootFS: RootFS;
 }
 

packages/sumi-core/src/server/core/app.ts

@@ -31,7 +31,7 @@ import { RawMessageIO } from '@opensumi/ide-connection/lib/common/rpc/message-io
 import { rawSerializer } from '@opensumi/ide-connection/lib/common/serializer/raw';
 
 import { IServerApp, HOME_ROOT } from '../../common';
-import { initializeRootFileSystem, initializeHomeFileSystem } from './filesystem';
+import { initializeRootFileSystem, initializeHomeFileSystem, unmountRootFS } from './filesystem';
 import { fsExtra as fse } from '../node';
 import { WORKSPACE_ROOT, STORAGE_DIR } from '../../common/constant';
 import { RootFS, RuntimeConfig } from '../../common/types';
@@ -238,6 +238,10 @@ export class ServerApp implements IServerApp {
     await this.startContribution();
   }
 
+  unmountRootFS(): void {
+    unmountRootFS();
+  }
+
   dispose() {
     this.disposeCollection.dispose();
   }

packages/sumi-core/src/server/core/filesystem.ts

@@ -21,6 +21,13 @@ export const initializeRootFileSystem = async () => {
   return mountfs;
 };
 
+export const unmountRootFS = () => {
+  if (mountfs) {
+    // mountfs
+    mountfs = null;
+  }
+}
+
 export const initializeHomeFileSystem = async (rootFS: RootFS, scenario?: string | null) => {
   try {
     let homefs: FileSystem | null = null;