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package shell
import (
"context"
"fmt"
"io"
"net/url"
"path/filepath"
"strconv"
"strings"
"github.com/chrislusf/seaweedfs/weed/filer2"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/wdclient"
"google.golang.org/grpc"
)
type ShellOptions struct {
Masters *string
GrpcDialOption grpc.DialOption
// shell transient context
FilerHost string
FilerPort int64
Directory string
}
type CommandEnv struct {
env map[string]string
MasterClient *wdclient.MasterClient
option ShellOptions
}
type command interface {
Name() string
Help() string
Do([]string, *CommandEnv, io.Writer) error
}
var (
Commands = []command{}
)
func NewCommandEnv(options ShellOptions) *CommandEnv {
return &CommandEnv{
env: make(map[string]string),
MasterClient: wdclient.NewMasterClient(context.Background(),
options.GrpcDialOption, "shell", strings.Split(*options.Masters, ",")),
option: options,
}
}
func (ce *CommandEnv) parseUrl(input string) (filerServer string, filerPort int64, path string, err error) {
if strings.HasPrefix(input, "http") {
return parseFilerUrl(input)
}
if !strings.HasPrefix(input, "/") {
input = filepath.ToSlash(filepath.Join(ce.option.Directory, input))
}
return ce.option.FilerHost, ce.option.FilerPort, input, err
}
func (ce *CommandEnv) isDirectory(ctx context.Context, filerServer string, filerPort int64, path string) bool {
return ce.checkDirectory(ctx, filerServer, filerPort, path) == nil
}
func (ce *CommandEnv) checkDirectory(ctx context.Context, filerServer string, filerPort int64, path string) error {
dir, name := filer2.FullPath(path).DirAndName()
return ce.withFilerClient(ctx, filerServer, filerPort, func(client filer_pb.SeaweedFilerClient) error {
resp, listErr := client.ListEntries(ctx, &filer_pb.ListEntriesRequest{
Directory: dir,
Prefix: name,
StartFromFileName: name,
InclusiveStartFrom: true,
Limit: 1,
})
if listErr != nil {
return listErr
}
if len(resp.Entries) == 0 {
return fmt.Errorf("entry not found")
}
if resp.Entries[0].Name != name {
return fmt.Errorf("not a valid directory, found %s", resp.Entries[0].Name)
}
if !resp.Entries[0].IsDirectory {
return fmt.Errorf("not a directory")
}
return nil
})
}
func parseFilerUrl(entryPath string) (filerServer string, filerPort int64, path string, err error) {
if strings.HasPrefix(entryPath, "http") {
var u *url.URL
u, err = url.Parse(entryPath)
if err != nil {
return
}
filerServer = u.Hostname()
portString := u.Port()
if portString != "" {
filerPort, err = strconv.ParseInt(portString, 10, 32)
}
path = u.Path
} else {
err = fmt.Errorf("path should have full url http://<filer_server>:<port>/path/to/dirOrFile : %s", entryPath)
}
return
}
func findInputDirectory(args []string) (input string) {
input = "."
if len(args) > 0 {
input = args[len(args)-1]
if strings.HasPrefix(input, "-") {
input = "."
}
}
return input
}
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