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restore.go
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restore.go
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package sync
import (
"context"
"github.com/FleekHQ/space-daemon/core/events"
"github.com/FleekHQ/space-daemon/core/textile/bucket"
"github.com/FleekHQ/space-daemon/core/textile/utils"
"github.com/FleekHQ/space-daemon/log"
api_buckets_pb "github.com/textileio/textile/v2/api/buckets/pb"
)
// return the targetBucket if path is newer there, srcBucket otherwise
func (s *synchronizer) newerBucketPath(ctx context.Context, srcBucket, targetBucket bucket.BucketInterface, path string) (bucket.BucketInterface, error) {
targetUpdatedAt, err := targetBucket.UpdatedAt(ctx, path)
if err != nil {
return nil, err
}
srcUpdatedAt, err := srcBucket.UpdatedAt(ctx, path)
if err != nil {
// Path might not exist in src bucket
return targetBucket, nil
}
if srcUpdatedAt >= targetUpdatedAt {
return srcBucket, nil
}
return targetBucket, nil
}
// restore bucket by downloading files to the local from the mirror bucket
func (s *synchronizer) restoreBucket(ctx context.Context, bucketSlug string) error {
localBucket, err := s.getBucket(ctx, bucketSlug)
if err != nil {
log.Error("Error in getBucket", err)
return err
}
mirrorBucket, err := s.getMirrorBucket(ctx, bucketSlug)
if err != nil {
log.Error("Error in getMirrorBucket", err)
return err
}
iterator := func(c context.Context, b *bucket.Bucket, itemPath string) error {
exists, _ := localBucket.FileExists(c, itemPath)
if exists {
newerBucket, err := s.newerBucketPath(c, localBucket, mirrorBucket, itemPath)
if err != nil {
return err
}
if newerBucket == localBucket {
// do not overwrite: mirror is not newer
return nil
}
}
bucketModel, err := s.model.FindBucket(ctx, bucketSlug)
if err != nil {
return err
}
item, err := mirrorBucket.ListDirectory(ctx, itemPath)
if s.eventNotifier != nil && err == nil {
info := utils.MapDirEntryToFileInfo(api_buckets_pb.ListPathResponse(*item), itemPath)
info.BackedUp = true
info.LocallyAvailable = exists
info.RestoreInProgress = true
s.eventNotifier.SendFileEvent(events.NewFileEvent(info, events.FileRestoring, bucketSlug, bucketModel.DbID))
}
s.NotifyFileRestore(bucketSlug, itemPath)
return nil
}
if _, err = mirrorBucket.Each(ctx, "", iterator, true); err != nil {
return err
}
return nil
}