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reader_server.go
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/
reader_server.go
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// (c) 2019-2020, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package greadcloser
import (
"context"
"io"
"github.com/ava-labs/avalanchego/vms/rpcchainvm/ghttp/greadcloser/greadcloserproto"
)
var _ greadcloserproto.ReaderServer = &Server{}
// Server is a io.ReadCloser that is managed over RPC.
type Server struct {
greadcloserproto.UnimplementedReaderServer
readCloser io.ReadCloser
}
// NewServer returns an io.ReadCloser instance managed remotely
func NewServer(readCloser io.ReadCloser) *Server {
return &Server{readCloser: readCloser}
}
func (s *Server) Read(ctx context.Context, req *greadcloserproto.ReadRequest) (*greadcloserproto.ReadResponse, error) {
buf := make([]byte, int(req.Length))
n, err := s.readCloser.Read(buf)
resp := &greadcloserproto.ReadResponse{
Read: buf[:n],
}
if err != nil {
resp.Errored = true
resp.Error = err.Error()
}
return resp, nil
}
func (s *Server) Close(ctx context.Context, req *greadcloserproto.CloseRequest) (*greadcloserproto.CloseResponse, error) {
return &greadcloserproto.CloseResponse{}, s.readCloser.Close()
}