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package shell
import (
"context"
"fmt"
"io"
"math"
"github.com/chrislusf/seaweedfs/weed/filer2"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
)
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
fs.cat http://<filer_server>:<port>/dir/file_name
`
}
func (c *commandFsCat) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
input := findInputDirectory(args)
filerServer, filerPort, path, err := commandEnv.parseUrl(input)
if err != nil {
return err
}
ctx := context.Background()
if commandEnv.isDirectory(ctx, filerServer, filerPort, path) {
return fmt.Errorf("%s is a directory", path)
}
dir, name := filer2.FullPath(path).DirAndName()
return commandEnv.withFilerClient(ctx, filerServer, filerPort, func(ctx context.Context, client filer_pb.SeaweedFilerClient) error {
request := &filer_pb.LookupDirectoryEntryRequest{
Name: name,
Directory: dir,
}
respLookupEntry, err := client.LookupDirectoryEntry(ctx, request)
if err != nil {
return err
}
return filer2.StreamContent(commandEnv.MasterClient, writer, respLookupEntry.Entry.Chunks, 0, math.MaxInt32)
})
}
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