seaweedfs/weed/shell/command_fs_mv.go

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package shell
import (
"context"
"fmt"
"io"
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
"github.com/seaweedfs/seaweedfs/weed/util"
)
func init() {
Commands = append(Commands, &commandFsMv{})
}
type commandFsMv struct {
}
func (c *commandFsMv) Name() string {
return "fs.mv"
}
func (c *commandFsMv) Help() string {
return `move or rename a file or a folder
fs.mv <source entry> <destination entry>
fs.mv /dir/file_name /dir2/filename2
fs.mv /dir/file_name /dir2
fs.mv /dir/dir2 /dir3/dir4/
fs.mv /dir/dir2 /dir3/new_dir
`
}
func (c *commandFsMv) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
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if len(args) != 2 {
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return fmt.Errorf("need to have 2 arguments")
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}
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sourcePath, err := commandEnv.parseUrl(args[0])
if err != nil {
return err
}
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destinationPath, err := commandEnv.parseUrl(args[1])
if err != nil {
return err
}
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sourceDir, sourceName := util.FullPath(sourcePath).DirAndName()
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destinationDir, destinationName := util.FullPath(destinationPath).DirAndName()
return commandEnv.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
// collect destination entry info
destinationRequest := &filer_pb.LookupDirectoryEntryRequest{
Name: destinationDir,
Directory: destinationName,
}
respDestinationLookupEntry, err := filer_pb.LookupEntry(client, destinationRequest)
var targetDir, targetName string
// moving a file or folder
if err == nil && respDestinationLookupEntry.Entry.IsDirectory {
// to a directory
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targetDir = util.Join(destinationDir, destinationName)
targetName = sourceName
} else {
// to a file or folder
targetDir = destinationDir
targetName = destinationName
}
request := &filer_pb.AtomicRenameEntryRequest{
OldDirectory: sourceDir,
OldName: sourceName,
NewDirectory: targetDir,
NewName: targetName,
}
_, err = client.AtomicRenameEntry(context.Background(), request)
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fmt.Fprintf(writer, "move: %s => %s\n", sourcePath, util.NewFullPath(targetDir, targetName))
return err
})
}