podmanv2 pod ps

add the ability to list pods in podmanv2

Signed-off-by: Brent Baude <bbaude@redhat.com>

3 files changed, 167 insertions, 0 deletions

diff --git a/cmd/podmanV2/pods/pod.go b/cmd/podmanV2/pods/pod.go
index 81c0d33e1..3766893bb 100644
--- a/cmd/podmanV2/pods/pod.go
+++ b/cmd/podmanV2/pods/pod.go
@@ -1,6 +1,9 @@
 package pods
 
 import (
+	"strings"
+	"text/template"
+
 	"github.com/containers/libpod/cmd/podmanV2/registry"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/spf13/cobra"
@@ -18,6 +21,33 @@ var (
 	}
 )
 
+var podFuncMap = template.FuncMap{
+	"numCons": func(cons []*entities.ListPodContainer) int {
+		return len(cons)
+	},
+	"podcids": func(cons []*entities.ListPodContainer) string {
+		var ctrids []string
+		for _, c := range cons {
+			ctrids = append(ctrids, c.Id[:12])
+		}
+		return strings.Join(ctrids, ",")
+	},
+	"podconnames": func(cons []*entities.ListPodContainer) string {
+		var ctrNames []string
+		for _, c := range cons {
+			ctrNames = append(ctrNames, c.Names[:12])
+		}
+		return strings.Join(ctrNames, ",")
+	},
+	"podconstatuses": func(cons []*entities.ListPodContainer) string {
+		var statuses []string
+		for _, c := range cons {
+			statuses = append(statuses, c.Status)
+		}
+		return strings.Join(statuses, ",")
+	},
+}
+
 func init() {
 	registry.Commands = append(registry.Commands, registry.CliCommand{
 		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
diff --git a/cmd/podmanV2/pods/ps.go b/cmd/podmanV2/pods/ps.go
index d4c625b2e..9546dff9e 100644
--- a/cmd/podmanV2/pods/ps.go
+++ b/cmd/podmanV2/pods/ps.go
@@ -1,8 +1,19 @@
 package pods
 
 import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"strings"
+	"text/tabwriter"
+	"text/template"
+
 	"github.com/containers/libpod/cmd/podmanV2/registry"
+	"github.com/containers/libpod/cmd/podmanV2/report"
 	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
 
@@ -19,14 +30,137 @@ var (
 	}
 )
 
+var (
+	defaultHeaders string = "POD ID\tNAME\tSTATUS\tCREATED"
+	inputFilters   string
+	noTrunc        bool
+	psInput        entities.PodPSOptions
+)
+
 func init() {
 	registry.Commands = append(registry.Commands, registry.CliCommand{
 		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
 		Command: psCmd,
 		Parent:  podCmd,
 	})
+	flags := psCmd.Flags()
+	flags.BoolVar(&psInput.CtrNames, "ctr-names", false, "Display the container names")
+	flags.BoolVar(&psInput.CtrIds, "ctr-ids", false, "Display the container UUIDs. If no-trunc is not set they will be truncated")
+	flags.BoolVar(&psInput.CtrStatus, "ctr-status", false, "Display the container status")
+	// TODO should we make this a [] ?
+	flags.StringVarP(&inputFilters, "filter", "f", "", "Filter output based on conditions given")
+	flags.StringVar(&psInput.Format, "format", "", "Pretty-print pods to JSON or using a Go template")
+	flags.BoolVarP(&psInput.Latest, "latest", "l", false, "Act on the latest pod podman is aware of")
+	flags.BoolVar(&psInput.Namespace, "namespace", false, "Display namespace information of the pod")
+	flags.BoolVar(&psInput.Namespace, "ns", false, "Display namespace information of the pod")
+	flags.BoolVar(&noTrunc, "no-trunc", false, "Do not truncate pod and container IDs")
+	flags.BoolVarP(&psInput.Quiet, "quiet", "q", false, "Print the numeric IDs of the pods only")
+	flags.StringVar(&psInput.Sort, "sort", "created", "Sort output by created, id, name, or number")
+	if registry.IsRemote() {
+		_ = flags.MarkHidden("latest")
+	}
 }
 
 func pods(cmd *cobra.Command, args []string) error {
+	var (
+		w   io.Writer = os.Stdout
+		row string
+	)
+	if cmd.Flag("filter").Changed {
+		for _, f := range strings.Split(inputFilters, ",") {
+			split := strings.Split(f, "=")
+			if len(split) < 2 {
+				return errors.Errorf("filter input must be in the form of filter=value: %s is invalid", f)
+			}
+			psInput.Filters[split[0]] = append(psInput.Filters[split[0]], split[1])
+		}
+	}
+	responses, err := registry.ContainerEngine().PodPs(context.Background(), psInput)
+	if err != nil {
+		return err
+	}
+
+	if psInput.Format == "json" {
+		b, err := json.MarshalIndent(responses, "", "  ")
+		if err != nil {
+			return err
+		}
+		fmt.Println(string(b))
+		return nil
+	}
+	headers, row := createPodPsOut(cmd)
+	if psInput.Quiet {
+		if noTrunc {
+			row = "{{.Id}}\n"
+		} else {
+			row = "{{slice .Id 0 12}}\n"
+		}
+	}
+	if cmd.Flag("format").Changed {
+		row = psInput.Format
+		if !strings.HasPrefix(row, "\n") {
+			row += "\n"
+		}
+	}
+	format := "{{range . }}" + row + "{{end}}"
+	if !psInput.Quiet && !cmd.Flag("format").Changed {
+		format = headers + format
+	}
+	funcs := report.AppendFuncMap(podFuncMap)
+	tmpl, err := template.New("listPods").Funcs(funcs).Parse(format)
+	if err != nil {
+		return err
+	}
+	if !psInput.Quiet {
+		w = tabwriter.NewWriter(os.Stdout, 8, 2, 2, ' ', 0)
+	}
+	if err := tmpl.Execute(w, responses); err != nil {
+		return err
+	}
+	if flusher, ok := w.(interface{ Flush() error }); ok {
+		return flusher.Flush()
+	}
 	return nil
 }
+
+func createPodPsOut(cmd *cobra.Command) (string, string) {
+	var row string
+	headers := defaultHeaders
+	if noTrunc {
+		row += "{{.Id}}"
+	} else {
+		row += "{{slice .Id 0 12}}"
+	}
+
+	row += "\t{{.Name}}\t{{.Status}}\t{{humanDurationFromTime .Created}}"
+
+	//rowFormat      string = "{{slice .Id 0 12}}\t{{.Name}}\t{{.Status}}\t{{humanDurationFromTime .Created}}"
+	if psInput.CtrIds {
+		headers += "\tIDS"
+		row += "\t{{podcids .Containers}}"
+	}
+	if psInput.CtrNames {
+		headers += "\tNAMES"
+		row += "\t{{podconnames .Containers}}"
+	}
+	if psInput.CtrStatus {
+		headers += "\tSTATUS"
+		row += "\t{{podconstatuses .Containers}}"
+	}
+	if psInput.Namespace {
+		headers += "\tCGROUP\tNAMESPACES"
+		row += "\t{{.Cgroup}}\t{{.Namespace}}"
+	}
+	if !psInput.CtrStatus && !psInput.CtrNames && !psInput.CtrIds {
+		headers += "\t# OF CONTAINERS"
+		row += "\t{{numCons .Containers}}"
+
+	}
+	headers += "\tINFRA ID\n"
+	if noTrunc {
+		row += "\t{{.InfraId}}\n"
+	} else {
+		row += "\t{{slice .InfraId 0 12}}\n"
+	}
+	return headers, row
+}
diff --git a/cmd/podmanV2/report/templates.go b/cmd/podmanV2/report/templates.go
index f3bc06405..e46048e97 100644
--- a/cmd/podmanV2/report/templates.go
+++ b/cmd/podmanV2/report/templates.go
@@ -19,6 +19,9 @@ var defaultFuncMap = template.FuncMap{
 	"humanDuration": func(t int64) string {
 		return units.HumanDuration(time.Since(time.Unix(t, 0))) + " ago"
 	},
+	"humanDurationFromTime": func(t time.Time) string {
+		return units.HumanDuration(time.Since(t)) + " ago"
+	},
 	"humanSize": func(sz int64) string {
 		s := units.HumanSizeWithPrecision(float64(sz), 3)
 		i := strings.LastIndexFunc(s, unicode.IsNumber)