mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-05-20 02:10:20 +02:00
84 lines
2.6 KiB
Go
84 lines
2.6 KiB
Go
package main
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import (
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"bytes"
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"compress/gzip"
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"crypto/md5"
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"flag"
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"io"
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"io/ioutil"
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"net/http"
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"time"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/storage"
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"github.com/chrislusf/seaweedfs/weed/storage/needle"
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"github.com/chrislusf/seaweedfs/weed/storage/super_block"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
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type VolumeFileScanner4SeeDat struct {
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version needle.Version
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}
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func (scanner *VolumeFileScanner4SeeDat) VisitSuperBlock(superBlock super_block.SuperBlock) error {
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scanner.version = superBlock.Version
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return nil
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}
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func (scanner *VolumeFileScanner4SeeDat) ReadNeedleBody() bool {
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return true
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}
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var (
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files = int64(0)
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filebytes = int64(0)
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diffbytes = int64(0)
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)
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func Compresssion(data []byte) float64 {
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if len(data) <= 128 {
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return 100.0
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}
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compressed, _ := util.GzipData(data[0:128])
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return float64(len(compressed)*10) / 1280.0
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}
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func (scanner *VolumeFileScanner4SeeDat) VisitNeedle(n *needle.Needle, offset int64, needleHeader, needleBody []byte) error {
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t := time.Unix(int64(n.AppendAtNs)/int64(time.Second), int64(n.AppendAtNs)%int64(time.Second))
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glog.V(0).Info("----------------------------------------------------------------------------------")
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glog.V(0).Infof("%d,%s%x offset %d size %d(%s) cookie %x appendedAt %v hasmime[%t] mime[%s] (len: %d)",
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*volumeId, n.Id, n.Cookie, offset, n.Size, util.BytesToHumanReadable(uint64(n.Size)), n.Cookie, t, n.HasMime(), string(n.Mime), len(n.Mime))
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r, err := gzip.NewReader(bytes.NewReader(n.Data))
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if err == nil {
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buf := bytes.Buffer{}
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h := md5.New()
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c, _ := io.Copy(&buf, r)
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d := buf.Bytes()
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io.Copy(h, bytes.NewReader(d))
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diff := (int64(n.DataSize) - int64(c))
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diffbytes += diff
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glog.V(0).Infof("was gzip! stored_size: %d orig_size: %d diff: %d(%d) mime:%s compression-of-128: %.2f md5: %x", n.DataSize, c, diff, diffbytes, http.DetectContentType(d), Compresssion(d), h.Sum(nil))
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} else {
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glog.V(0).Infof("no gzip!")
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}
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return nil
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}
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var (
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_ = ioutil.ReadAll
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volumePath = flag.String("dir", "/tmp", "data directory to store files")
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volumeCollection = flag.String("collection", "", "the volume collection name")
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volumeId = flag.Int("volumeId", -1, "a volume id. The volume should already exist in the dir. The volume index file should not exist.")
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)
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func main() {
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flag.Parse()
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vid := needle.VolumeId(*volumeId)
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glog.V(0).Info("Starting")
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scanner := &VolumeFileScanner4SeeDat{}
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err := storage.ScanVolumeFile(*volumePath, *volumeCollection, vid, storage.NeedleMapInMemory, scanner)
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if err != nil {
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glog.Fatalf("Reading Volume File [ERROR] %s\n", err)
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}
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}
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