github.com/crquan/docker@v1.8.1/api/client/history.go (about) 1 package client 2 3 import ( 4 "encoding/json" 5 "fmt" 6 "text/tabwriter" 7 "time" 8 9 "github.com/docker/docker/api/types" 10 Cli "github.com/docker/docker/cli" 11 flag "github.com/docker/docker/pkg/mflag" 12 "github.com/docker/docker/pkg/stringid" 13 "github.com/docker/docker/pkg/stringutils" 14 "github.com/docker/docker/pkg/units" 15 ) 16 17 // CmdHistory shows the history of an image. 18 // 19 // Usage: docker history [OPTIONS] IMAGE 20 func (cli *DockerCli) CmdHistory(args ...string) error { 21 cmd := Cli.Subcmd("history", []string{"IMAGE"}, "Show the history of an image", true) 22 human := cmd.Bool([]string{"H", "-human"}, true, "Print sizes and dates in human readable format") 23 quiet := cmd.Bool([]string{"q", "-quiet"}, false, "Only show numeric IDs") 24 noTrunc := cmd.Bool([]string{"#notrunc", "-no-trunc"}, false, "Don't truncate output") 25 cmd.Require(flag.Exact, 1) 26 27 cmd.ParseFlags(args, true) 28 29 serverResp, err := cli.call("GET", "/images/"+cmd.Arg(0)+"/history", nil, nil) 30 if err != nil { 31 return err 32 } 33 34 defer serverResp.body.Close() 35 36 history := []types.ImageHistory{} 37 if err := json.NewDecoder(serverResp.body).Decode(&history); err != nil { 38 return err 39 } 40 41 w := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0) 42 if !*quiet { 43 fmt.Fprintln(w, "IMAGE\tCREATED\tCREATED BY\tSIZE\tCOMMENT") 44 } 45 46 for _, entry := range history { 47 if *noTrunc { 48 fmt.Fprintf(w, entry.ID) 49 } else { 50 fmt.Fprintf(w, stringid.TruncateID(entry.ID)) 51 } 52 if !*quiet { 53 if *human { 54 fmt.Fprintf(w, "\t%s ago\t", units.HumanDuration(time.Now().UTC().Sub(time.Unix(entry.Created, 0)))) 55 } else { 56 fmt.Fprintf(w, "\t%s\t", time.Unix(entry.Created, 0).Format(time.RFC3339)) 57 } 58 59 if *noTrunc { 60 fmt.Fprintf(w, "%s\t", entry.CreatedBy) 61 } else { 62 fmt.Fprintf(w, "%s\t", stringutils.Truncate(entry.CreatedBy, 45)) 63 } 64 65 if *human { 66 fmt.Fprintf(w, "%s\t", units.HumanSize(float64(entry.Size))) 67 } else { 68 fmt.Fprintf(w, "%d\t", entry.Size) 69 } 70 71 fmt.Fprintf(w, "%s", entry.Comment) 72 } 73 fmt.Fprintf(w, "\n") 74 } 75 w.Flush() 76 return nil 77 }