seaweedfs/weed/shell/command_fs_cat.go
2020-03-23 21:26:15 -07:00

60 lines
1.2 KiB
Go

package shell
import (
"fmt"
"io"
"math"
"github.com/chrislusf/seaweedfs/weed/filer2"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/util"
)
func init() {
Commands = append(Commands, &commandFsCat{})
}
type commandFsCat struct {
}
func (c *commandFsCat) Name() string {
return "fs.cat"
}
func (c *commandFsCat) Help() string {
return `stream the file content on to the screen
fs.cat /dir/file_name
`
}
func (c *commandFsCat) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
path, err := commandEnv.parseUrl(findInputDirectory(args))
if err != nil {
return err
}
if commandEnv.isDirectory(path) {
return fmt.Errorf("%s is a directory", path)
}
dir, name := util.FullPath(path).DirAndName()
return commandEnv.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
request := &filer_pb.LookupDirectoryEntryRequest{
Name: name,
Directory: dir,
}
respLookupEntry, err := filer_pb.LookupEntry(client, request)
if err != nil {
return err
}
return filer2.StreamContent(commandEnv.MasterClient, writer, respLookupEntry.Entry.Chunks, 0, math.MaxInt64)
})
}