From 96dc25a031db00d59d4289b8f8c6bbe831a02a04 Mon Sep 17 00:00:00 2001
From: mahsa shadi <mahsa.shadi@mail.um.ac.ir>
Date: Tue, 2 Aug 2022 15:03:32 +0430
Subject: [PATCH] Add VFS capability caching
---
src/vfs.js | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/src/vfs.js b/src/vfs.js
index 8277402..79f8782 100644
--- a/src/vfs.js
+++ b/src/vfs.js
@@ -60,6 +60,9 @@ import {
* @property {object} [stat]
*/
+// Cache the capability of each mount point
+let capabilityCache = {};
+
// Makes sure our input paths are object(s)
const pathToObject = path => ({
id: null,
@@ -81,8 +84,17 @@ const handleDirectoryList = (path, options) => result =>
* @param {VFSMethodOptions} [options] Options
* @return {Promise<object[]>} An object of capabilities
*/
-export const capabilities = (adapter, mount) => (path, options = {}) =>
- adapter.capabilities(pathToObject(path), options, mount);
+export const capabilities = (adapter, mount) => (path, options = {}) => {
+ const cached = capabilityCache[mount.name];
+ if (cached) {
+ return Promise.resolve(cached);
+ }
+ return adapter.capabilities(pathToObject(path), options, mount)
+ .then(res => {
+ capabilityCache[mount.name] = res;
+ return res;
+ });
+};
/**