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Seek to beginning for tempbuffer

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This commit is contained in:
Frederick F. Kautz IV
2015-02-27 12:18:08 -08:00
parent da10fd5a83
commit be768d01a2
2 changed files with 14 additions and 8 deletions
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pkg/storage/donut/v1/donut.go
+12 -6
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@@ -22,6 +22,8 @@ import (
"encoding/gob"
"errors"
"io"
"io/ioutil"
"os"
"sync"
"github.com/minio-io/minio/pkg/storage/erasure"
@@ -206,26 +208,30 @@ func (donut *Donut) Write(gobHeader GobHeader, object io.Reader) error {
BlockEnd: MagicINIM,
}
var tempBuffer bytes.Buffer
tempBuffer, err := ioutil.TempFile(os.TempDir(), "minio-staging")
if err != nil {
return err
}
defer os.Remove(tempBuffer.Name())
// write header
if err := donut.WriteBegin(&tempBuffer, donutFormat); err != nil {
if err := donut.WriteBegin(tempBuffer, donutFormat); err != nil {
return err
}
// write data
if err := donut.WriteData(&tempBuffer, donutFormat); err != nil {
if err := donut.WriteData(tempBuffer, donutFormat); err != nil {
return err
}
// write footer crc
if err := donut.WriteEnd(&tempBuffer, donutFormat); err != nil {
if err := donut.WriteEnd(tempBuffer, donutFormat); err != nil {
return err
}
// write footer
donut.file.Seek(0, 2)
io.Copy(donut.file, &tempBuffer)
tempBuffer.Seek(0, 0)
io.Copy(donut.file, tempBuffer)
return nil
}