fix(server): avoid get object content when syncing (#9402)

packages/backend/server/src/base/event/def.ts

@@ -24,6 +24,10 @@ export interface WorkspaceEvents {
       workspaceId: Workspace['id'];
       key: string;
     }>;
+    sync: Payload<{
+      workspaceId: Workspace['id'];
+      key: string;
+    }>;
   };
 }
 

packages/backend/server/src/base/storage/providers/fs.ts

@@ -61,6 +61,15 @@ export class FsStorageProvider implements StorageProvider {
     this.logger.verbose(`Object \`${key}\` put`);
   }
 
+  async head(key: string) {
+    const metadata = this.readMetadata(key);
+    if (!metadata) {
+      this.logger.verbose(`Object \`${key}\` not found`);
+      return undefined;
+    }
+    return metadata;
+  }
+
   async get(key: string): Promise<{
     body?: Readable;
     metadata?: GetObjectMetadata;

packages/backend/server/src/base/storage/providers/provider.ts

@@ -34,6 +34,7 @@ export interface StorageProvider {
     body: BlobInputType,
     metadata?: PutObjectMetadata
   ): Promise<void>;
+  head(key: string): Promise<GetObjectMetadata | undefined>;
   get(
     key: string
   ): Promise<{ body?: BlobOutputType; metadata?: GetObjectMetadata }>;