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prepare for flexible super block

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This commit is contained in:
Chris Lu
2018-06-24 11:37:08 -07:00
parent b46cf2bb0e
commit 9ba335a7c4
5 changed files with 45 additions and 35 deletions
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23
unmaintained/fix_dat/fix_dat.go
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@@ -39,24 +39,26 @@ func main() {
}
indexFile, err := os.OpenFile(path.Join(*fixVolumePath, fileName+".idx"), os.O_RDONLY, 0644)
if err != nil {
glog.Fatalf("Read Volume Index [ERROR] %s\n", err)
glog.Fatalf("Read Volume Index %v", err)
}
defer indexFile.Close()
datFile, err := os.OpenFile(path.Join(*fixVolumePath, fileName+".dat"), os.O_RDONLY, 0644)
if err != nil {
glog.Fatalf("Read Volume Data [ERROR] %s\n", err)
glog.Fatalf("Read Volume Data %v", err)
}
defer datFile.Close()
newDatFile, err := os.Create(path.Join(*fixVolumePath, fileName+".dat_fixed"))
if err != nil {
glog.Fatalf("Write New Volume Data [ERROR] %s\n", err)
glog.Fatalf("Write New Volume Data %v", err)
}
defer newDatFile.Close()
header := make([]byte, storage.SuperBlockSize)
datFile.Read(header)
newDatFile.Write(header)
superBlock, err := storage.ReadSuperBlock(datFile)
if err != nil {
glog.Fatalf("Read Volume Data superblock %v", err)
}
newDatFile.Write(superBlock.Bytes())
iterateEntries(datFile, indexFile, func(n *storage.Needle, offset int64) {
fmt.Printf("file id=%d name=%s size=%d dataSize=%d\n", n.Id, string(n.Name), n.Size, n.DataSize)
@@ -74,8 +76,13 @@ func iterateEntries(datFile, idxFile *os.File, visitNeedle func(n *storage.Needl
readerOffset += int64(count)
// start to read dat file
offset := int64(storage.SuperBlockSize)
version := storage.Version2
superblock, err := storage.ReadSuperBlock(datFile)
if err != nil {
fmt.Printf("cannot read dat file super block: %v", err)
return
}
offset := int64(superblock.BlockSize())
version := superblock.Version()
n, rest, err := storage.ReadNeedleHeader(datFile, version, offset)
if err != nil {
fmt.Printf("cannot read needle header: %v", err)