/*
This is to see content in .idx files.
see_idx -v=4 -volumeId=9 -dir=/Users/chrislu/Downloads
*/
func main() {
flag.Parse()
fileName := strconv.Itoa(*fixVolumeId)
if *fixVolumeCollection != "" {
fileName = *fixVolumeCollection + "_" + fileName
}
indexFile, err := os.OpenFile(path.Join(*fixVolumePath, fileName+".idx"), os.O_RDONLY, 0644)
if err != nil {
glog.Fatalf("Create Volume Index [ERROR] %s\n", err)
}
defer indexFile.Close()
storage.LoadNeedleMap(indexFile)
}
func runExport(cmd *Command, args []string) bool {
var err error
if *newer != "" {
if newerThan, err = time.ParseInLocation(timeFormat, *newer, localLocation); err != nil {
fmt.Println("cannot parse 'newer' argument: " + err.Error())
return false
}
newerThanUnix = newerThan.Unix()
}
if *export.volumeId == -1 {
return false
}
if *output != "" {
if *output != "-" && !strings.HasSuffix(*output, ".tar") {
fmt.Println("the output file", *output, "should be '-' or end with .tar")
return false
}
if fileNameTemplate, err = template.New("name").Parse(*format); err != nil {
fmt.Println("cannot parse format " + *format + ": " + err.Error())
return false
}
var outputFile *os.File
if *output == "-" {
outputFile = os.Stdout
} else {
if outputFile, err = os.Create(*output); err != nil {
glog.Fatalf("cannot open output tar %s: %s", *output, err)
}
}
defer outputFile.Close()
tarOutputFile = tar.NewWriter(outputFile)
defer tarOutputFile.Close()
t := time.Now()
tarHeader = tar.Header{Mode: 0644,
ModTime: t, Uid: os.Getuid(), Gid: os.Getgid(),
Typeflag: tar.TypeReg,
AccessTime: t, ChangeTime: t}
}
fileName := strconv.Itoa(*export.volumeId)
if *export.collection != "" {
fileName = *export.collection + "_" + fileName
}
vid := storage.VolumeId(*export.volumeId)
indexFile, err := os.OpenFile(path.Join(*export.dir, fileName+".idx"), os.O_RDONLY, 0644)
if err != nil {
glog.Fatalf("Create Volume Index [ERROR] %s\n", err)
}
defer indexFile.Close()
needleMap, err := storage.LoadNeedleMap(indexFile)
if err != nil {
glog.Fatalf("cannot load needle map from %s: %s", indexFile.Name(), err)
}
var version storage.Version
err = storage.ScanVolumeFile(*export.dir, *export.collection, vid,
storage.NeedleMapInMemory,
func(superBlock storage.SuperBlock) error {
version = superBlock.Version()
return nil
}, true, func(n *storage.Needle, offset int64) error {
nv, ok := needleMap.Get(n.Id)
glog.V(3).Infof("key %d offset %d size %d disk_size %d gzip %v ok %v nv %+v",
n.Id, offset, n.Size, n.DiskSize(), n.IsGzipped(), ok, nv)
if ok && nv.Size > 0 && int64(nv.Offset)*8 == offset {
if newerThanUnix >= 0 && n.HasLastModifiedDate() && n.LastModified < uint64(newerThanUnix) {
glog.V(3).Infof("Skipping this file, as it's old enough: LastModified %d vs %d",
n.LastModified, newerThanUnix)
return nil
}
return walker(vid, n, version)
}
if !ok {
glog.V(2).Infof("This seems deleted %d size %d", n.Id, n.Size)
} else {
glog.V(2).Infof("Skipping later-updated Id %d size %d", n.Id, n.Size)
}
return nil
})
if err != nil {
glog.Fatalf("Export Volume File [ERROR] %s\n", err)
}
return true
}