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72 lines
1.5 KiB
72 lines
1.5 KiB
package shell
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import (
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"context"
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"fmt"
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"io"
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"github.com/seaweedfs/seaweedfs/weed/filer"
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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, &commandFsCat{})
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}
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type commandFsCat struct {
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}
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func (c *commandFsCat) Name() string {
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return "fs.cat"
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}
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func (c *commandFsCat) Help() string {
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return `stream the file content on to the screen
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fs.cat /dir/file_name
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`
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}
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func (c *commandFsCat) HasTag(CommandTag) bool {
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return false
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}
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func (c *commandFsCat) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
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if handleHelpRequest(c, args, writer) {
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return nil
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}
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path, err := commandEnv.parseUrl(findInputDirectory(args))
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if err != nil {
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return err
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}
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if commandEnv.isDirectory(path) {
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return fmt.Errorf("%s is a directory", path)
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}
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dir, name := util.FullPath(path).DirAndName()
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return commandEnv.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
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request := &filer_pb.LookupDirectoryEntryRequest{
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Name: name,
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Directory: dir,
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}
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respLookupEntry, err := filer_pb.LookupEntry(context.Background(), client, request)
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if err != nil {
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return err
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}
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if len(respLookupEntry.Entry.Content) > 0 {
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_, err = writer.Write(respLookupEntry.Entry.Content)
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return err
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}
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return filer.StreamContent(commandEnv.MasterClient, writer, respLookupEntry.Entry.GetChunks(), 0, int64(filer.FileSize(respLookupEntry.Entry)))
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})
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}
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