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Merge pull request moby#14699 from estesp/docker-ps-format
Carry moby#10255: Docker ps format
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,210 @@ | ||
| package ps | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "fmt" | ||
| "strconv" | ||
| "strings" | ||
| "text/tabwriter" | ||
| "text/template" | ||
| "time" | ||
|
|
||
| "github.com/docker/docker/api" | ||
| "github.com/docker/docker/api/types" | ||
| "github.com/docker/docker/pkg/stringid" | ||
| "github.com/docker/docker/pkg/stringutils" | ||
| "github.com/docker/docker/pkg/units" | ||
| ) | ||
|
|
||
| const ( | ||
| tableKey = "table" | ||
|
|
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| idHeader = "CONTAINER ID" | ||
| imageHeader = "IMAGE" | ||
| namesHeader = "NAMES" | ||
| commandHeader = "COMMAND" | ||
| createdAtHeader = "CREATED AT" | ||
| runningForHeader = "CREATED" | ||
| statusHeader = "STATUS" | ||
| portsHeader = "PORTS" | ||
| sizeHeader = "SIZE" | ||
| labelsHeader = "LABELS" | ||
| ) | ||
|
|
||
| type containerContext struct { | ||
| trunc bool | ||
| header []string | ||
| c types.Container | ||
| } | ||
|
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| func (c *containerContext) ID() string { | ||
| c.addHeader(idHeader) | ||
| if c.trunc { | ||
| return stringid.TruncateID(c.c.ID) | ||
| } | ||
| return c.c.ID | ||
| } | ||
|
|
||
| func (c *containerContext) Names() string { | ||
| c.addHeader(namesHeader) | ||
| names := stripNamePrefix(c.c.Names) | ||
| if c.trunc { | ||
| for _, name := range names { | ||
| if len(strings.Split(name, "/")) == 1 { | ||
| names = []string{name} | ||
| break | ||
| } | ||
| } | ||
| } | ||
| return strings.Join(names, ",") | ||
| } | ||
|
|
||
| func (c *containerContext) Image() string { | ||
| c.addHeader(imageHeader) | ||
| if c.c.Image == "" { | ||
| return "<no image>" | ||
| } | ||
| return c.c.Image | ||
| } | ||
|
|
||
| func (c *containerContext) Command() string { | ||
| c.addHeader(commandHeader) | ||
| command := c.c.Command | ||
| if c.trunc { | ||
| command = stringutils.Truncate(command, 20) | ||
| } | ||
| return strconv.Quote(command) | ||
| } | ||
|
|
||
| func (c *containerContext) CreatedAt() string { | ||
| c.addHeader(createdAtHeader) | ||
| return time.Unix(int64(c.c.Created), 0).String() | ||
| } | ||
|
|
||
| func (c *containerContext) RunningFor() string { | ||
| c.addHeader(runningForHeader) | ||
| createdAt := time.Unix(int64(c.c.Created), 0) | ||
| return units.HumanDuration(time.Now().UTC().Sub(createdAt)) | ||
| } | ||
|
|
||
| func (c *containerContext) Ports() string { | ||
| c.addHeader(portsHeader) | ||
| return api.DisplayablePorts(c.c.Ports) | ||
| } | ||
|
|
||
| func (c *containerContext) Status() string { | ||
| c.addHeader(statusHeader) | ||
| return c.c.Status | ||
| } | ||
|
|
||
| func (c *containerContext) Size() string { | ||
| c.addHeader(sizeHeader) | ||
| srw := units.HumanSize(float64(c.c.SizeRw)) | ||
| sv := units.HumanSize(float64(c.c.SizeRootFs)) | ||
|
|
||
| sf := srw | ||
| if c.c.SizeRootFs > 0 { | ||
| sf = fmt.Sprintf("%s (virtual %s)", srw, sv) | ||
| } | ||
| return sf | ||
| } | ||
|
|
||
| func (c *containerContext) Labels() string { | ||
| c.addHeader(labelsHeader) | ||
| if c.c.Labels == nil { | ||
| return "" | ||
| } | ||
|
|
||
| var joinLabels []string | ||
| for k, v := range c.c.Labels { | ||
| joinLabels = append(joinLabels, fmt.Sprintf("%s=%s", k, v)) | ||
| } | ||
| return strings.Join(joinLabels, ",") | ||
| } | ||
|
|
||
| func (c *containerContext) Label(name string) string { | ||
| n := strings.Split(name, ".") | ||
| r := strings.NewReplacer("-", " ", "_", " ") | ||
| h := r.Replace(n[len(n)-1]) | ||
|
|
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| c.addHeader(h) | ||
|
|
||
| if c.c.Labels == nil { | ||
| return "" | ||
| } | ||
| return c.c.Labels[name] | ||
| } | ||
|
|
||
| func (c *containerContext) fullHeader() string { | ||
| if c.header == nil { | ||
| return "" | ||
| } | ||
| return strings.Join(c.header, "\t") | ||
| } | ||
|
|
||
| func (c *containerContext) addHeader(header string) { | ||
| if c.header == nil { | ||
| c.header = []string{} | ||
| } | ||
| c.header = append(c.header, strings.ToUpper(header)) | ||
| } | ||
|
|
||
| func customFormat(ctx Context, containers []types.Container) { | ||
| var ( | ||
| table bool | ||
| header string | ||
| format = ctx.Format | ||
| buffer = bytes.NewBufferString("") | ||
| ) | ||
|
|
||
| if strings.HasPrefix(ctx.Format, tableKey) { | ||
| table = true | ||
| format = format[len(tableKey):] | ||
| } | ||
|
|
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| format = strings.Trim(format, " ") | ||
| r := strings.NewReplacer(`\t`, "\t", `\n`, "\n") | ||
| format = r.Replace(format) | ||
|
|
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| if table && ctx.Size { | ||
| format += "\t{{.Size}}" | ||
| } | ||
|
|
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| tmpl, err := template.New("ps template").Parse(format) | ||
| if err != nil { | ||
| buffer.WriteString(fmt.Sprintf("Invalid `docker ps` format: %v\n", err)) | ||
| } | ||
|
|
||
| for _, container := range containers { | ||
| containerCtx := &containerContext{ | ||
| trunc: ctx.Trunc, | ||
| c: container, | ||
| } | ||
| if err := tmpl.Execute(buffer, containerCtx); err != nil { | ||
| buffer = bytes.NewBufferString(fmt.Sprintf("Invalid `docker ps` format: %v\n", err)) | ||
| break | ||
| } | ||
| if table && len(header) == 0 { | ||
| header = containerCtx.fullHeader() | ||
| } | ||
| buffer.WriteString("\n") | ||
| } | ||
|
|
||
| if table { | ||
| t := tabwriter.NewWriter(ctx.Output, 20, 1, 3, ' ', 0) | ||
| t.Write([]byte(header)) | ||
| t.Write([]byte("\n")) | ||
| buffer.WriteTo(t) | ||
| t.Flush() | ||
| } else { | ||
| buffer.WriteTo(ctx.Output) | ||
| } | ||
| } | ||
|
|
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| func stripNamePrefix(ss []string) []string { | ||
| for i, s := range ss { | ||
| ss[i] = s[1:] | ||
| } | ||
|
|
||
| return ss | ||
| } |
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