DockerCLI/cli/command/formatter/container.go

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package formatter
import (
"fmt"
"sort"
"strconv"
"strings"
"time"
"github.com/docker/distribution/reference"
"github.com/docker/docker/api/types"
"github.com/docker/docker/pkg/stringid"
"github.com/docker/go-units"
)
const (
defaultContainerTableFormat = "table {{.ID}}\t{{.Image}}\t{{.Command}}\t{{.RunningFor}}\t{{.Status}}\t{{.Ports}}\t{{.Names}}"
namesHeader = "NAMES"
commandHeader = "COMMAND"
runningForHeader = "CREATED"
mountsHeader = "MOUNTS"
localVolumes = "LOCAL VOLUMES"
networksHeader = "NETWORKS"
)
// NewContainerFormat returns a Format for rendering using a Context
func NewContainerFormat(source string, quiet bool, size bool) Format {
switch source {
case TableFormatKey:
if quiet {
return DefaultQuietFormat
}
format := defaultContainerTableFormat
if size {
format += `\t{{.Size}}`
}
return Format(format)
case RawFormatKey:
if quiet {
return `container_id: {{.ID}}`
}
format := `container_id: {{.ID}}
image: {{.Image}}
command: {{.Command}}
created_at: {{.CreatedAt}}
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state: {{- pad .State 1 0}}
status: {{- pad .Status 1 0}}
names: {{.Names}}
labels: {{- pad .Labels 1 0}}
ports: {{- pad .Ports 1 0}}
`
if size {
format += `size: {{.Size}}\n`
}
return Format(format)
}
return Format(source)
}
// ContainerWrite renders the context for a list of containers
func ContainerWrite(ctx Context, containers []types.Container) error {
render := func(format func(subContext SubContext) error) error {
for _, container := range containers {
err := format(&containerContext{trunc: ctx.Trunc, c: container})
if err != nil {
return err
}
}
return nil
}
return ctx.Write(newContainerContext(), render)
}
type containerContext struct {
HeaderContext
trunc bool
c types.Container
}
func newContainerContext() *containerContext {
containerCtx := containerContext{}
containerCtx.Header = SubHeaderContext{
"ID": ContainerIDHeader,
"Names": namesHeader,
"Image": ImageHeader,
"Command": commandHeader,
"CreatedAt": CreatedAtHeader,
"RunningFor": runningForHeader,
"Ports": PortsHeader,
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"State": StateHeader,
"Status": StatusHeader,
"Size": SizeHeader,
"Labels": LabelsHeader,
"Mounts": mountsHeader,
"LocalVolumes": localVolumes,
"Networks": networksHeader,
}
return &containerCtx
}
func (c *containerContext) MarshalJSON() ([]byte, error) {
return MarshalJSON(c)
}
func (c *containerContext) ID() string {
if c.trunc {
return stringid.TruncateID(c.c.ID)
}
return c.c.ID
}
func (c *containerContext) Names() string {
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 {
if c.c.Image == "" {
return "<no image>"
}
if c.trunc {
if trunc := stringid.TruncateID(c.c.ImageID); trunc == stringid.TruncateID(c.c.Image) {
return trunc
}
// truncate digest if no-trunc option was not selected
ref, err := reference.ParseNormalizedNamed(c.c.Image)
if err == nil {
if nt, ok := ref.(reference.NamedTagged); ok {
// case for when a tag is provided
if namedTagged, err := reference.WithTag(reference.TrimNamed(nt), nt.Tag()); err == nil {
return reference.FamiliarString(namedTagged)
}
} else {
// case for when a tag is not provided
named := reference.TrimNamed(ref)
return reference.FamiliarString(named)
}
}
}
return c.c.Image
}
func (c *containerContext) Command() string {
command := c.c.Command
if c.trunc {
command = Ellipsis(command, 20)
}
return strconv.Quote(command)
}
func (c *containerContext) CreatedAt() string {
return time.Unix(c.c.Created, 0).String()
}
func (c *containerContext) RunningFor() string {
createdAt := time.Unix(c.c.Created, 0)
return units.HumanDuration(time.Now().UTC().Sub(createdAt)) + " ago"
}
func (c *containerContext) Ports() string {
return DisplayablePorts(c.c.Ports)
}
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func (c *containerContext) State() string {
return c.c.State
}
func (c *containerContext) Status() string {
return c.c.Status
}
func (c *containerContext) Size() string {
srw := units.HumanSizeWithPrecision(float64(c.c.SizeRw), 3)
sv := units.HumanSizeWithPrecision(float64(c.c.SizeRootFs), 3)
sf := srw
if c.c.SizeRootFs > 0 {
sf = fmt.Sprintf("%s (virtual %s)", srw, sv)
}
return sf
}
func (c *containerContext) Labels() string {
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 {
if c.c.Labels == nil {
return ""
}
return c.c.Labels[name]
}
func (c *containerContext) Mounts() string {
var name string
var mounts []string
for _, m := range c.c.Mounts {
if m.Name == "" {
name = m.Source
} else {
name = m.Name
}
if c.trunc {
name = Ellipsis(name, 15)
}
mounts = append(mounts, name)
}
return strings.Join(mounts, ",")
}
func (c *containerContext) LocalVolumes() string {
count := 0
for _, m := range c.c.Mounts {
if m.Driver == "local" {
count++
}
}
return fmt.Sprintf("%d", count)
}
func (c *containerContext) Networks() string {
if c.c.NetworkSettings == nil {
return ""
}
networks := []string{}
for k := range c.c.NetworkSettings.Networks {
networks = append(networks, k)
}
return strings.Join(networks, ",")
}
// DisplayablePorts returns formatted string representing open ports of container
// e.g. "0.0.0.0:80->9090/tcp, 9988/tcp"
// it's used by command 'docker ps'
func DisplayablePorts(ports []types.Port) string {
type portGroup struct {
first uint16
last uint16
}
groupMap := make(map[string]*portGroup)
var result []string
var hostMappings []string
var groupMapKeys []string
sort.Slice(ports, func(i, j int) bool {
return comparePorts(ports[i], ports[j])
})
for _, port := range ports {
current := port.PrivatePort
portKey := port.Type
if port.IP != "" {
if port.PublicPort != current {
hostMappings = append(hostMappings, fmt.Sprintf("%s:%d->%d/%s", port.IP, port.PublicPort, port.PrivatePort, port.Type))
continue
}
portKey = fmt.Sprintf("%s/%s", port.IP, port.Type)
}
group := groupMap[portKey]
if group == nil {
groupMap[portKey] = &portGroup{first: current, last: current}
// record order that groupMap keys are created
groupMapKeys = append(groupMapKeys, portKey)
continue
}
if current == (group.last + 1) {
group.last = current
continue
}
result = append(result, formGroup(portKey, group.first, group.last))
groupMap[portKey] = &portGroup{first: current, last: current}
}
for _, portKey := range groupMapKeys {
g := groupMap[portKey]
result = append(result, formGroup(portKey, g.first, g.last))
}
result = append(result, hostMappings...)
return strings.Join(result, ", ")
}
func formGroup(key string, start, last uint16) string {
parts := strings.Split(key, "/")
groupType := parts[0]
var ip string
if len(parts) > 1 {
ip = parts[0]
groupType = parts[1]
}
group := strconv.Itoa(int(start))
if start != last {
group = fmt.Sprintf("%s-%d", group, last)
}
if ip != "" {
group = fmt.Sprintf("%s:%s->%s", ip, group, group)
}
return fmt.Sprintf("%s/%s", group, groupType)
}
func comparePorts(i, j types.Port) bool {
if i.PrivatePort != j.PrivatePort {
return i.PrivatePort < j.PrivatePort
}
if i.IP != j.IP {
return i.IP < j.IP
}
if i.PublicPort != j.PublicPort {
return i.PublicPort < j.PublicPort
}
return i.Type < j.Type
}