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FUSE mount: atomic local cache updates

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This commit is contained in:
Chris Lu
2020-04-29 18:20:54 -07:00
parent 9e72e9e4b8
commit e93588ec78
2 changed files with 64 additions and 9 deletions
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13
weed/filesys/meta_cache/meta_cache_subscribe.go
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@@ -16,12 +16,11 @@ func SubscribeMetaEvents(mc *MetaCache, client filer_pb.FilerClient, dir string,
processEventFn := func(resp *filer_pb.SubscribeMetadataResponse) error {
message := resp.EventNotification
ctx := context.Background()
var err error
var oldPath util.FullPath
var newEntry *filer2.Entry
if message.OldEntry != nil {
key := util.NewFullPath(resp.Directory, message.OldEntry.Name)
glog.V(4).Infof("deleting %v", key)
err = mc.DeleteEntry(ctx, key)
oldPath = util.NewFullPath(resp.Directory, message.OldEntry.Name)
glog.V(4).Infof("deleting %v", oldPath)
}
if message.NewEntry != nil {
@@ -31,9 +30,9 @@ func SubscribeMetaEvents(mc *MetaCache, client filer_pb.FilerClient, dir string,
}
key := util.NewFullPath(dir, message.NewEntry.Name)
glog.V(4).Infof("creating %v", key)
err = mc.InsertEntry(ctx, filer2.FromPbEntry(dir, message.NewEntry))
newEntry = filer2.FromPbEntry(dir, message.NewEntry)
}
return err
return mc.AtomicUpdateEntry(context.Background(), oldPath, newEntry)
}
for {