DockerCLI/cli/command/image/formatter_history.go

117 lines
2.9 KiB
Go
Raw Normal View History

package image
import (
"strconv"
"strings"
"time"
"github.com/docker/cli/cli/command/formatter"
"github.com/docker/docker/api/types/image"
"github.com/docker/docker/pkg/stringid"
units "github.com/docker/go-units"
)
const (
defaultHistoryTableFormat = "table {{.ID}}\t{{.CreatedSince}}\t{{.CreatedBy}}\t{{.Size}}\t{{.Comment}}"
nonHumanHistoryTableFormat = "table {{.ID}}\t{{.CreatedAt}}\t{{.CreatedBy}}\t{{.Size}}\t{{.Comment}}"
historyIDHeader = "IMAGE"
createdByHeader = "CREATED BY"
commentHeader = "COMMENT"
)
// NewHistoryFormat returns a format for rendering an HistoryContext
func NewHistoryFormat(source string, quiet bool, human bool) formatter.Format {
switch source {
case formatter.TableFormatKey:
switch {
case quiet:
return formatter.DefaultQuietFormat
case !human:
return nonHumanHistoryTableFormat
default:
return defaultHistoryTableFormat
}
}
return formatter.Format(source)
}
// HistoryWrite writes the context
func HistoryWrite(ctx formatter.Context, human bool, histories []image.HistoryResponseItem) error {
render := func(format func(subContext formatter.SubContext) error) error {
for _, history := range histories {
historyCtx := &historyContext{trunc: ctx.Trunc, h: history, human: human}
if err := format(historyCtx); err != nil {
return err
}
}
return nil
}
historyCtx := &historyContext{}
historyCtx.Header = formatter.SubHeaderContext{
"ID": historyIDHeader,
"CreatedSince": formatter.CreatedSinceHeader,
"CreatedAt": formatter.CreatedAtHeader,
"CreatedBy": createdByHeader,
"Size": formatter.SizeHeader,
"Comment": commentHeader,
}
return ctx.Write(historyCtx, render)
}
type historyContext struct {
formatter.HeaderContext
trunc bool
human bool
h image.HistoryResponseItem
}
func (c *historyContext) MarshalJSON() ([]byte, error) {
return formatter.MarshalJSON(c)
}
func (c *historyContext) ID() string {
if c.trunc {
return stringid.TruncateID(c.h.ID)
}
return c.h.ID
}
func (c *historyContext) CreatedAt() string {
return time.Unix(c.h.Created, 0).Format(time.RFC3339)
}
// epoch is the time before which created-at dates are not displayed with human units.
var epoch = time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC).Unix()
func (c *historyContext) CreatedSince() string {
if !c.human {
return c.CreatedAt()
}
if c.h.Created <= epoch {
return "N/A"
}
created := units.HumanDuration(time.Now().UTC().Sub(time.Unix(c.h.Created, 0)))
return created + " ago"
}
func (c *historyContext) CreatedBy() string {
createdBy := strings.Replace(c.h.CreatedBy, "\t", " ", -1)
if c.trunc {
return formatter.Ellipsis(createdBy, 45)
}
return createdBy
}
func (c *historyContext) Size() string {
if c.human {
return units.HumanSizeWithPrecision(float64(c.h.Size), 3)
}
return strconv.FormatInt(c.h.Size, 10)
}
func (c *historyContext) Comment() string {
return c.h.Comment
}