storj/pkg/piecestore/rpc/client/readerwriter.go
Cameron 6463b87ebe
Errcheck (#133)
* add errcheck

* fixed linter errors

* fixes

* errcheck fixes in pkg/paths

* Fix errchecks in PieceID.Derive

* Fix ecclient tests

* Move closeConn a little bit above in the exectution flow

* fix new lint errors

* Fatalf -> Printf

* address eclipsed errors

* rename err to closeErr

* rename err to closeErr for differentiation
2018-07-16 15:22:34 -04:00

69 lines
1.6 KiB
Go

// Copyright (C) 2018 Storj Labs, Inc.
// See LICENSE for copying information.
package client
import (
"fmt"
"log"
"storj.io/storj/pkg/utils"
pb "storj.io/storj/protos/piecestore"
)
// StreamWriter creates a StreamWriter for writing data to the piece store server
type StreamWriter struct {
stream pb.PieceStoreRoutes_StoreClient
}
// Write Piece data to a piece store server upload stream
func (s *StreamWriter) Write(b []byte) (int, error) {
if err := s.stream.Send(&pb.PieceStore{Content: b}); err != nil {
return 0, fmt.Errorf("%v.Send() = %v", s.stream, err)
}
return len(b), nil
}
// Close Closes the piece store Write Stream
func (s *StreamWriter) Close() error {
reply, err := s.stream.CloseAndRecv()
if err != nil {
return err
}
log.Printf("Route summary: %v", reply)
return nil
}
// StreamReader is a struct for reading piece download stream from server
type StreamReader struct {
stream pb.PieceStoreRoutes_RetrieveClient
src *utils.ReaderSource
}
// NewStreamReader creates a StreamReader for reading data from the piece store server
func NewStreamReader(stream pb.PieceStoreRoutes_RetrieveClient) *StreamReader {
return &StreamReader{
stream: stream,
src: utils.NewReaderSource(func() ([]byte, error) {
msg, err := stream.Recv()
if err != nil {
return nil, err
}
return msg.Content, nil
}),
}
}
// Read Piece data from piece store server download stream
func (s *StreamReader) Read(b []byte) (int, error) {
return s.src.Read(b)
}
// Close the piece store server Read Stream
func (s *StreamReader) Close() error {
return s.stream.CloseSend()
}