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https://github.com/moby/moby.git
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93d1dd8036
Improves the current filtering implementation complixity. Currently, the best case is O(N) and worst case O(N^2) for key-value filtering. In the new implementation, the best case is O(1) and worst case O(N), again for key-value filtering. Signed-off-by: David Calavera <david.calavera@gmail.com>
116 lines
2.8 KiB
Go
116 lines
2.8 KiB
Go
package client
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import (
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"encoding/json"
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"net/url"
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"strconv"
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"github.com/docker/docker/api/client/ps"
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"github.com/docker/docker/api/types"
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Cli "github.com/docker/docker/cli"
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"github.com/docker/docker/opts"
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flag "github.com/docker/docker/pkg/mflag"
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"github.com/docker/docker/pkg/parsers/filters"
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)
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// CmdPs outputs a list of Docker containers.
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//
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// Usage: docker ps [OPTIONS]
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func (cli *DockerCli) CmdPs(args ...string) error {
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var (
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err error
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psFilterArgs = filters.NewArgs()
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v = url.Values{}
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cmd = Cli.Subcmd("ps", nil, Cli.DockerCommands["ps"].Description, true)
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quiet = cmd.Bool([]string{"q", "-quiet"}, false, "Only display numeric IDs")
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size = cmd.Bool([]string{"s", "-size"}, false, "Display total file sizes")
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all = cmd.Bool([]string{"a", "-all"}, false, "Show all containers (default shows just running)")
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noTrunc = cmd.Bool([]string{"-no-trunc"}, false, "Don't truncate output")
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nLatest = cmd.Bool([]string{"l", "-latest"}, false, "Show the latest created container (includes all states)")
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since = cmd.String([]string{"#-since"}, "", "Show containers created since Id or Name (includes all states)")
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before = cmd.String([]string{"#-before"}, "", "Only show containers created before Id or Name")
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last = cmd.Int([]string{"n"}, -1, "Show n last created containers (includes all states)")
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format = cmd.String([]string{"-format"}, "", "Pretty-print containers using a Go template")
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flFilter = opts.NewListOpts(nil)
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)
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cmd.Require(flag.Exact, 0)
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cmd.Var(&flFilter, []string{"f", "-filter"}, "Filter output based on conditions provided")
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cmd.ParseFlags(args, true)
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if *last == -1 && *nLatest {
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*last = 1
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}
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if *all {
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v.Set("all", "1")
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}
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if *last != -1 {
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v.Set("limit", strconv.Itoa(*last))
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}
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if *since != "" {
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v.Set("since", *since)
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}
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if *before != "" {
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v.Set("before", *before)
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}
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if *size {
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v.Set("size", "1")
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}
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// Consolidate all filter flags, and sanity check them.
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// They'll get processed in the daemon/server.
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for _, f := range flFilter.GetAll() {
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if psFilterArgs, err = filters.ParseFlag(f, psFilterArgs); err != nil {
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return err
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}
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}
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if psFilterArgs.Len() > 0 {
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filterJSON, err := filters.ToParam(psFilterArgs)
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if err != nil {
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return err
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}
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v.Set("filters", filterJSON)
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}
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serverResp, err := cli.call("GET", "/containers/json?"+v.Encode(), nil, nil)
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if err != nil {
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return err
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}
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defer serverResp.body.Close()
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containers := []types.Container{}
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if err := json.NewDecoder(serverResp.body).Decode(&containers); err != nil {
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return err
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}
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f := *format
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if len(f) == 0 {
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if len(cli.PsFormat()) > 0 && !*quiet {
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f = cli.PsFormat()
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} else {
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f = "table"
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}
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}
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psCtx := ps.Context{
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Output: cli.out,
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Format: f,
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Quiet: *quiet,
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Size: *size,
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Trunc: !*noTrunc,
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}
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ps.Format(psCtx, containers)
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return nil
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}
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