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package cleanup
import (
"io"
"gitlab.com/gitlab-org/gitaly/proto/v15/go/gitalypb"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/service"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/service/cleanup/internalrefs"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/service/cleanup/notifier"
"gitlab.com/gitlab-org/gitaly/v15/internal/helper/chunk"
"gitlab.com/gitlab-org/gitaly/v15/streamio"
"google.golang.org/protobuf/proto"
)
type bfgStreamReader struct {
firstRequest *gitalypb.ApplyBfgObjectMapStreamRequest
server gitalypb.CleanupService_ApplyBfgObjectMapStreamServer
}
type bfgStreamWriter struct {
entries []*gitalypb.ApplyBfgObjectMapStreamResponse_Entry
server gitalypb.CleanupService_ApplyBfgObjectMapStreamServer
}
func (s *server) ApplyBfgObjectMapStream(server gitalypb.CleanupService_ApplyBfgObjectMapStreamServer) error {
firstRequest, err := server.Recv()
if err != nil {
return structerr.NewInternal("%w", err)
}
if err := validateFirstRequest(firstRequest); err != nil {
return structerr.NewInvalidArgument("%w", err)
}
ctx := server.Context()
repo := s.localrepo(firstRequest.GetRepository())
reader := &bfgStreamReader{firstRequest: firstRequest, server: server}
chunker := chunk.New(&bfgStreamWriter{server: server})
notifier, cancel, err := notifier.New(ctx, s.catfileCache, repo, chunker)
if err != nil {
return structerr.NewInternal("%w", err)
}
defer cancel()
// It doesn't matter if new internal references are added after this RPC
// starts running - they shouldn't point to the objects removed by the BFG
cleaner, err := internalrefs.NewCleaner(ctx, repo, notifier.Notify)
if err != nil {
return structerr.NewInternal("%w", err)
}
if err := cleaner.ApplyObjectMap(ctx, reader.streamReader()); err != nil {
if invalidErr, ok := err.(internalrefs.ErrInvalidObjectMap); ok {
return structerr.NewInvalidArgument("%w", invalidErr)
}
return structerr.NewInternal("%w", err)
}
if err := chunker.Flush(); err != nil {
return structerr.NewInternal("%w", err)
}
return nil
}
func validateFirstRequest(req *gitalypb.ApplyBfgObjectMapStreamRequest) error {
return service.ValidateRepository(req.GetRepository())
}
func (r *bfgStreamReader) readOne() ([]byte, error) {
if r.firstRequest != nil {
data := r.firstRequest.GetObjectMap()
r.firstRequest = nil
return data, nil
}
req, err := r.server.Recv()
if err != nil {
return nil, err
}
return req.GetObjectMap(), nil
}
func (r *bfgStreamReader) streamReader() io.Reader {
return streamio.NewReader(r.readOne)
}
func (w *bfgStreamWriter) Append(m proto.Message) {
w.entries = append(
w.entries,
m.(*gitalypb.ApplyBfgObjectMapStreamResponse_Entry),
)
}
func (w *bfgStreamWriter) Reset() {
w.entries = nil
}
func (w *bfgStreamWriter) Send() error {
msg := &gitalypb.ApplyBfgObjectMapStreamResponse{Entries: w.entries}
return w.server.Send(msg)
}
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