frostfs-node/pkg/services/object/get/v2/streamer.go
Leonard Lyubich bf2c33d7a9 [] services/object: Implement Get service
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
2020-10-02 11:25:36 +03:00

47 lines
1 KiB
Go

package getsvc
import (
"fmt"
objectV2 "github.com/nspcc-dev/neofs-api-go/v2/object"
"github.com/nspcc-dev/neofs-node/pkg/core/object"
getsvc "github.com/nspcc-dev/neofs-node/pkg/services/object/get"
"github.com/pkg/errors"
)
type streamer struct {
stream *getsvc.Streamer
body *objectV2.GetResponseBody
}
func (s *streamer) Recv() (*objectV2.GetResponse, error) {
r, err := s.stream.Recv()
if err != nil {
return nil, errors.Wrapf(err, "(%T) could not receive get response", s)
}
switch v := r.(type) {
case *object.Object:
oV2 := v.ToV2()
partInit := new(objectV2.GetObjectPartInit)
partInit.SetHeader(oV2.GetHeader())
partInit.SetSignature(oV2.GetSignature())
partInit.SetObjectID(oV2.GetObjectID())
s.body.SetObjectPart(partInit)
case []byte:
partChunk := new(objectV2.GetObjectPartChunk)
partChunk.SetChunk(v)
s.body.SetObjectPart(partChunk)
default:
panic(fmt.Sprintf("unexpected response type %T from %T", r, s.stream))
}
resp := new(objectV2.GetResponse)
resp.SetBody(s.body)
return resp, nil
}