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moby--moby/api/client/ps.go

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package client
import (
"encoding/json"
"fmt"
"net/url"
"strconv"
"strings"
"text/tabwriter"
"time"
"github.com/docker/docker/api"
"github.com/docker/docker/api/types"
"github.com/docker/docker/opts"
flag "github.com/docker/docker/pkg/mflag"
"github.com/docker/docker/pkg/parsers/filters"
"github.com/docker/docker/pkg/stringid"
"github.com/docker/docker/pkg/stringutils"
"github.com/docker/docker/pkg/units"
)
// CmdPs outputs a list of Docker containers.
//
// Usage: docker ps [OPTIONS]
func (cli *DockerCli) CmdPs(args ...string) error {
var (
err error
psFilterArgs = filters.Args{}
v = url.Values{}
cmd = cli.Subcmd("ps", nil, "List containers", true)
quiet = cmd.Bool([]string{"q", "-quiet"}, false, "Only display numeric IDs")
size = cmd.Bool([]string{"s", "-size"}, false, "Display total file sizes")
all = cmd.Bool([]string{"a", "-all"}, false, "Show all containers (default shows just running)")
noTrunc = cmd.Bool([]string{"#notrunc", "-no-trunc"}, false, "Don't truncate output")
nLatest = cmd.Bool([]string{"l", "-latest"}, false, "Show the latest created container, include non-running")
since = cmd.String([]string{"#sinceId", "#-since-id", "-since"}, "", "Show created since Id or Name, include non-running")
before = cmd.String([]string{"#beforeId", "#-before-id", "-before"}, "", "Show only container created before Id or Name")
last = cmd.Int([]string{"n"}, -1, "Show n last created containers, include non-running")
flFilter = opts.NewListOpts(nil)
)
cmd.Require(flag.Exact, 0)
cmd.Var(&flFilter, []string{"f", "-filter"}, "Filter output based on conditions provided")
cmd.ParseFlags(args, true)
if *last == -1 && *nLatest {
*last = 1
}
if *all {
v.Set("all", "1")
}
if *last != -1 {
v.Set("limit", strconv.Itoa(*last))
}
if *since != "" {
v.Set("since", *since)
}
if *before != "" {
v.Set("before", *before)
}
if *size {
v.Set("size", "1")
}
// Consolidate all filter flags, and sanity check them.
// They'll get processed in the daemon/server.
for _, f := range flFilter.GetAll() {
if psFilterArgs, err = filters.ParseFlag(f, psFilterArgs); err != nil {
return err
}
}
if len(psFilterArgs) > 0 {
filterJSON, err := filters.ToParam(psFilterArgs)
if err != nil {
return err
}
v.Set("filters", filterJSON)
}
serverResp, err := cli.call("GET", "/containers/json?"+v.Encode(), nil, nil)
if err != nil {
return err
}
defer serverResp.body.Close()
containers := []types.Container{}
if err := json.NewDecoder(serverResp.body).Decode(&containers); err != nil {
return err
}
w := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0)
if !*quiet {
fmt.Fprint(w, "CONTAINER ID\tIMAGE\tCOMMAND\tCREATED\tSTATUS\tPORTS\tNAMES")
if *size {
fmt.Fprintln(w, "\tSIZE")
} else {
fmt.Fprint(w, "\n")
}
}
stripNamePrefix := func(ss []string) []string {
for i, s := range ss {
ss[i] = s[1:]
}
return ss
}
for _, container := range containers {
ID := container.ID
if !*noTrunc {
ID = stringid.TruncateID(ID)
}
if *quiet {
fmt.Fprintln(w, ID)
continue
}
var (
names = stripNamePrefix(container.Names)
command = strconv.Quote(container.Command)
displayPort string
)
if !*noTrunc {
command = stringutils.Truncate(command, 20)
// only display the default name for the container with notrunc is passed
for _, name := range names {
if len(strings.Split(name, "/")) == 1 {
names = []string{name}
break
}
}
}
image := container.Image
if image == "" {
image = "<no image>"
}
if container.HostConfig.NetworkMode == "host" {
displayPort = "*/tcp, */udp"
} else {
displayPort = api.DisplayablePorts(container.Ports)
}
fmt.Fprintf(w, "%s\t%s\t%s\t%s ago\t%s\t%s\t%s\t", ID, image, command,
units.HumanDuration(time.Now().UTC().Sub(time.Unix(int64(container.Created), 0))),
container.Status, displayPort, strings.Join(names, ","))
if *size {
if container.SizeRootFs > 0 {
fmt.Fprintf(w, "%s (virtual %s)\n", units.HumanSize(float64(container.SizeRw)), units.HumanSize(float64(container.SizeRootFs)))
} else {
fmt.Fprintf(w, "%s\n", units.HumanSize(float64(container.SizeRw)))
}
continue
}
fmt.Fprint(w, "\n")
}
if !*quiet {
w.Flush()
}
return nil
}