Add cache to getFileHandle

GMOD · Oct 10, 2024 · a9a9b25 · a9a9b25
1 parent c3c59b7
commit a9a9b25
Showing 1 changed file with 9 additions and 1 deletion.
diff --git a/packages/apollo-collaboration-server/src/files/files.service.ts b/packages/apollo-collaboration-server/src/files/files.service.ts
@@ -84,6 +84,8 @@ export class FilesService {
     return fileStream.pipe(gunzip)
   }
 
+  private fileHandleCache: Record<string, GenericFilehandle | undefined> = {}
+
   getFileHandle(file: FileDocument): GenericFilehandle {
     const fileUploadFolder = this.configService.get('FILE_UPLOAD_FOLDER', {
       infer: true,
@@ -92,7 +94,13 @@ export class FilesService {
     switch (file.type) {
       case 'text/x-fai':
       case 'application/x-gzi': {
-        return new LocalFileGzip(fileName)
+        const fileHandleCacheHit = this.fileHandleCache[fileName]
+        if (fileHandleCacheHit) {
+          return fileHandleCacheHit
+        }
+        const fh = new LocalFileGzip(fileName)
+        this.fileHandleCache[fileName] = fh
+        return fh
       }
       case 'application/x-bgzip-fasta':
       case 'text/x-gff3':