From 3f7d85360a2fa90e1cb0d9282db0b76fe9b3c51a Mon Sep 17 00:00:00 2001
From: Alexander Neumann <alexander@bumpern.de>
Date: Thu, 28 Dec 2017 13:18:27 +0100
Subject: [PATCH] fuse: Only reload list of snapshots once per minute

---
 internal/fuse/root.go          | 6 +++++-
 internal/fuse/snapshots_dir.go | 7 +++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/internal/fuse/root.go b/internal/fuse/root.go
index d6ca78b1b..c6abc3bf2 100644
--- a/internal/fuse/root.go
+++ b/internal/fuse/root.go
@@ -4,6 +4,8 @@
 package fuse
 
 import (
+	"time"
+
 	"github.com/restic/restic/internal/debug"
 	"github.com/restic/restic/internal/restic"
 
@@ -27,7 +29,9 @@ type Root struct {
 	inode         uint64
 	snapshots     restic.Snapshots
 	blobSizeCache *BlobSizeCache
-	snCount       int
+
+	snCount   int
+	lastCheck time.Time
 
 	*MetaDir
 }
diff --git a/internal/fuse/snapshots_dir.go b/internal/fuse/snapshots_dir.go
index 47c691fea..19c785224 100644
--- a/internal/fuse/snapshots_dir.go
+++ b/internal/fuse/snapshots_dir.go
@@ -221,14 +221,21 @@ func isElem(e string, list []string) bool {
 	return false
 }
 
+const minSnapshotsReloadTime = 60 * time.Second
+
 // update snapshots if repository has changed
 func updateSnapshots(ctx context.Context, root *Root) {
+	if time.Since(root.lastCheck) < minSnapshotsReloadTime {
+		return
+	}
+
 	snapshots := restic.FindFilteredSnapshots(ctx, root.repo, root.cfg.Host, root.cfg.Tags, root.cfg.Paths)
 	if root.snCount != len(snapshots) {
 		root.snCount = len(snapshots)
 		root.repo.LoadIndex(ctx)
 		root.snapshots = snapshots
 	}
+	root.lastCheck = time.Now()
 }
 
 // read snapshot timestamps from the current repository-state.