restic/internal/archiver/index_uploader.go

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2018-03-30 20:43:18 +00:00
package archiver
import (
"context"
"time"
"github.com/restic/restic/internal/debug"
"github.com/restic/restic/internal/repository"
"github.com/restic/restic/internal/restic"
)
// IndexUploader polls the repo for full indexes and uploads them.
type IndexUploader struct {
restic.Repository
// Start is called when an index is to be uploaded.
Start func()
// Complete is called when uploading an index has finished.
Complete func(id restic.ID)
}
// Upload periodically uploads full indexes to the repo. When shutdown is
// cancelled, the last index upload will finish and then Upload returns.
func (u IndexUploader) Upload(ctx, shutdown context.Context, interval time.Duration) error {
ticker := time.NewTicker(interval)
defer ticker.Stop()
for {
select {
case <-ctx.Done():
return nil
case <-shutdown.Done():
return nil
case <-ticker.C:
full := u.Repository.Index().(*repository.MasterIndex).FullIndexes()
for _, idx := range full {
if u.Start != nil {
u.Start()
}
id, err := repository.SaveIndex(ctx, u.Repository, idx)
if err != nil {
debug.Log("save indexes returned an error: %v", err)
return err
}
if u.Complete != nil {
u.Complete(id)
}
}
}
}
}