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Writing data out with error handling

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This commit is contained in:
Frederick F. Kautz IV 2015-02-20 23:24:01 -08:00
parent 97b2e7fb3b
commit 8129d8fd0b
1 changed files with 41 additions and 13 deletions
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54
pkg/storage/donut/v1/donut.go
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@ -18,6 +18,7 @@ package v1
import (
"encoding/binary"
"errors"
"io"
)
@ -97,18 +98,45 @@ func (donut *Donut) Write(gobHeader GobHeader, object io.Reader) error {
}
func (donut *Donut) WriteFormat(target io.Writer, donutFormat DonutFormat) error {
err := binary.Write(target, binary.LittleEndian, donutFormat.BlockStart)
err = binary.Write(target, binary.LittleEndian, donutFormat.VersionMajor)
err = binary.Write(target, binary.LittleEndian, donutFormat.VersionMinor)
err = binary.Write(target, binary.LittleEndian, donutFormat.VersionPatch)
err = binary.Write(target, binary.LittleEndian, donutFormat.VersionReserved)
err = binary.Write(target, binary.LittleEndian, donutFormat.Reserved)
err = binary.Write(target, binary.LittleEndian, donutFormat.GobHeaderLen)
err = binary.Write(target, binary.LittleEndian, donutFormat.GobHeader)
err = binary.Write(target, binary.LittleEndian, donutFormat.BlockData)
err = binary.Write(target, binary.LittleEndian, donutFormat.Data)
err = binary.Write(target, binary.LittleEndian, donutFormat.BlockLen)
err = binary.Write(target, binary.LittleEndian, donutFormat.BlockEnd)
if err := binary.Write(target, binary.LittleEndian, donutFormat.BlockStart); err != nil {
return err
}
if err := binary.Write(target, binary.LittleEndian, donutFormat.VersionMajor); err != nil {
return err
}
if err := binary.Write(target, binary.LittleEndian, donutFormat.VersionMinor); err != nil {
return err
}
if err := binary.Write(target, binary.LittleEndian, donutFormat.VersionPatch); err != nil {
return err
}
if err := binary.Write(target, binary.LittleEndian, donutFormat.VersionReserved); err != nil {
return err
}
if err := binary.Write(target, binary.LittleEndian, donutFormat.Reserved); err != nil {
return err
}
if err := binary.Write(target, binary.LittleEndian, donutFormat.GobHeaderLen); err != nil {
return err
}
if err := binary.Write(target, binary.LittleEndian, donutFormat.GobHeader); err != nil {
return err
}
if err := binary.Write(target, binary.LittleEndian, donutFormat.BlockData); err != nil {
return err
}
if count, err := io.Copy(target, donutFormat.Data); uint64(count) != donutFormat.BlockLen || err != nil {
if err == nil {
return err
}
return errors.New("Copy failed, count incorrect.")
}
if err := binary.Write(target, binary.LittleEndian, donutFormat.BlockLen); err != nil {
return err
}
if err := binary.Write(target, binary.LittleEndian, donutFormat.BlockEnd); err != nil {
return err
}
return err
return nil
}