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117 lines
2.4 KiB
117 lines
2.4 KiB
package shell
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import (
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"flag"
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"fmt"
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"io"
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"os"
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"strings"
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"time"
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"github.com/golang/protobuf/proto"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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"github.com/seaweedfs/seaweedfs/weed/util"
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)
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func init() {
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Commands = append(Commands, &commandFsMetaLoad{})
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}
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type commandFsMetaLoad struct {
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}
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func (c *commandFsMetaLoad) Name() string {
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return "fs.meta.load"
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}
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func (c *commandFsMetaLoad) Help() string {
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return `load saved filer meta data to restore the directory and file structure
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fs.meta.load <filer_host>-<port>-<time>.meta
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fs.meta.load -v=false <filer_host>-<port>-<time>.meta // skip printing out the verbose output
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`
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}
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func (c *commandFsMetaLoad) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
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if len(args) == 0 {
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fmt.Fprintf(writer, "missing a metadata file\n")
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return nil
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}
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fileName := args[len(args)-1]
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metaLoadCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
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verbose := metaLoadCommand.Bool("v", true, "verbose mode")
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if err = metaLoadCommand.Parse(args[0 : len(args)-1]); err != nil {
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return nil
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}
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dst, err := os.OpenFile(fileName, os.O_RDONLY, 0644)
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if err != nil {
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return nil
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}
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defer dst.Close()
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var dirCount, fileCount uint64
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lastLogTime := time.Now()
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err = commandEnv.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
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sizeBuf := make([]byte, 4)
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for {
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if n, err := dst.Read(sizeBuf); n != 4 {
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if err == io.EOF {
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return nil
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}
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return err
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}
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size := util.BytesToUint32(sizeBuf)
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data := make([]byte, int(size))
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if n, err := dst.Read(data); n != len(data) {
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return err
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}
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fullEntry := &filer_pb.FullEntry{}
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if err = proto.Unmarshal(data, fullEntry); err != nil {
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return err
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}
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fullEntry.Entry.Name = strings.ReplaceAll(fullEntry.Entry.Name, "/", "x")
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if err := filer_pb.CreateEntry(client, &filer_pb.CreateEntryRequest{
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Directory: fullEntry.Dir,
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Entry: fullEntry.Entry,
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}); err != nil {
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return err
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}
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if *verbose || lastLogTime.Add(time.Second).Before(time.Now()) {
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if !*verbose {
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lastLogTime = time.Now()
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}
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fmt.Fprintf(writer, "load %s\n", util.FullPath(fullEntry.Dir).Child(fullEntry.Entry.Name))
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}
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if fullEntry.Entry.IsDirectory {
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dirCount++
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} else {
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fileCount++
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}
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}
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})
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if err == nil {
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fmt.Fprintf(writer, "\ntotal %d directories, %d files", dirCount, fileCount)
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fmt.Fprintf(writer, "\n%s is loaded.\n", fileName)
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}
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return err
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}
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