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core: Verify MD5 sums after each transfer

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This commit is contained in:
Nick Craig-Wood 2014-07-15 19:27:05 +01:00
parent c4dc9d273a
commit 8a76568ea8
1 changed files with 33 additions and 8 deletions
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41
fs/operations.go
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@ -97,6 +97,18 @@ func Equal(src, dst Object) bool {
return true
}
// Used to remove a failed copy
func removeFailedCopy(dst Object) {
if dst != nil {
Debug(dst, "Removing failed copy")
removeErr := dst.Remove()
if removeErr != nil {
Stats.Error()
Log(dst, "Failed to remove failed copy: %s", removeErr)
}
}
}
// Copy src object to dst or f if nil
//
// If dst is nil then the object must not exist already. If you do
@ -126,16 +138,29 @@ func Copy(f Fs, dst, src Object) {
if err != nil {
Stats.Error()
Log(src, "Failed to copy: %s", err)
if dst != nil {
Debug(dst, "Removing failed copy")
removeErr := dst.Remove()
if removeErr != nil {
Stats.Error()
Log(dst, "Failed to remove failed copy: %s", removeErr)
}
}
removeFailedCopy(dst)
return
}
// Verify md5sums are the same after transfer - ignoring blank md5sums
srcMd5sum, md5sumErr := src.Md5sum()
if md5sumErr != nil {
Stats.Error()
Log(src, "Failed to read md5sum: %s", md5sumErr)
} else if srcMd5sum != "" {
dstMd5sum, md5sumErr := dst.Md5sum()
if md5sumErr != nil {
Stats.Error()
Log(dst, "Failed to read md5sum: %s", md5sumErr)
} else if dstMd5sum != "" && srcMd5sum != dstMd5sum {
Stats.Error()
err = fmt.Errorf("Corrupted on transfer: md5sums differ %q vs %q", srcMd5sum, dstMd5sum)
Log(dst, "%s", err)
removeFailedCopy(dst)
return
}
}
Debug(src, actionTaken)
}