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Merge pull request #576 from stevvooe/seek-reset-handling

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content: allow reset via Truncate
This commit is contained in:
Stephen Day 2017-02-28 10:42:21 -08:00 • committed by GitHub
commit 317b884110
7 changed files with 64 additions and 13 deletions
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9
services/content/service.go
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@ -195,6 +195,8 @@ func (s *Service) Write(session api.Content_WriteServer) (err error) {
}
ctx = log.WithLogger(ctx, log.G(ctx).WithFields(fields))
log.G(ctx).Debug("(*Service).Write started")
// this action locks the writer for the session.
wr, err := s.store.Writer(ctx, ref, total, expected)
if err != nil {
@ -266,6 +268,13 @@ func (s *Service) Write(session api.Content_WriteServer) (err error) {
}
}
if req.Offset == 0 && ws.Offset > 0 {
if err := wr.Truncate(req.Offset); err != nil {
return errors.Wrapf(err, "truncate failed")
}
msg.Offset = req.Offset
}
// issue the write if we actually have data.
if len(req.Data) > 0 {
// While this looks like we could use io.WriterAt here, because we