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}} 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, "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 "" } 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) } 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 }