Add --format to pod inspect

Signed-off-by: Boaz Shuster <boaz.shuster.github@gmail.com>

cmd/podman/pods/inspect.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 
+	"github.com/containers/buildah/pkg/formats"
 	"github.com/containers/libpod/cmd/podman/registry"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/pkg/errors"
@@ -36,6 +37,7 @@ func init() {
 	})
 	flags := inspectCmd.Flags()
 	flags.BoolVarP(&inspectOptions.Latest, "latest", "l", false, "Act on the latest pod podman is aware of")
+	flags.StringVarP(&inspectOptions.Format, "format", "f", "json", "Format the output to a Go template or json")
 	if registry.IsRemote() {
 		_ = flags.MarkHidden("latest")
 	}
@@ -54,10 +56,11 @@ func inspect(cmd *cobra.Command, args []string) error {
 	if err != nil {
 		return err
 	}
-	b, err := json.MarshalIndent(responses, "", "  ")
-	if err != nil {
-		return err
+	var data interface{} = responses
+	var out formats.Writer = formats.JSONStruct{Output: data}
+	if inspectOptions.Format != "json" {
+		out = formats.StdoutTemplate{Output: data, Template: inspectOptions.Format}
 	}
-	fmt.Println(string(b))
-	return nil
+
+	return out.Out()
 }

completions/bash/podman

@@ -3345,6 +3345,18 @@ _podman_pod_unpause() {
     esac
 }
 
+_podman_pod_inspect() {
+  local options_with_args="
+   --format
+   -f
+   --latest
+   -l
+  "
+
+  _complete_ "$options_with_args"
+}
+
+
 _podman_pod() {
     local boolean_options="
 	--help
@@ -3362,6 +3374,7 @@ _podman_pod() {
      stop
      top
      unpause
+     inspect
     "
     local aliases="
      list

docs/source/markdown/podman-pod-inspect.1.md

@@ -18,21 +18,50 @@ to run pods such as CRI-O, the last started pod could be from either of those me
 
 The latest option is not supported on the remote client.
 
+**-f**, **--format**=*format*
+
+Change the default output format.  This can be of a supported type like 'json'
+or a Go template.
+Valid placeholders for the Go template are listed below:
+
+| **Placeholder**   | **Description**                                                               |
+| ----------------- | ----------------------------------------------------------------------------- |
+| .ID               | Pod   ID                                                                      |
+| .Name             | Pod   name                                                                    |
+| .State            | Pod   state                                                                   |
+| .Hostname         | Pod   hostname                                                                |
+| .Labels           | Pod   labels                                                                  |
+| .Created          | Time when the pod was created                                                 |
+| .CreateCgroup     | Whether cgroup was created                                                    |
+| .CgroupParent     | Pod   cgroup parent                                                           |
+| .CgroupPath       | Pod   cgroup path                                                             |
+| .CreateInfra      | Whether infrastructure created                                                |
+| .InfraContainerID | Pod   infrastructure ID                                                       |
+| .SharedNamespaces | Pod   shared namespaces                                                       |
+| .NumContainers    | Number of containers in the pod                                               |
+| .Containers       | Pod   containers                                                              |
+
 ## EXAMPLE
 ```
 # podman pod inspect foobar
 {
-     "Config": {
-          "id": "3513ca70583dd7ef2bac83331350f6b6c47d7b4e526c908e49d89ebf720e4693",
-          "name": "foobar",
-          "labels": {},
-          "cgroupParent": "/libpod_parent",
-          "UsePodCgroup": true,
-          "created": "2018-08-08T11:15:18.823115347-05:00"
-     },
-     "State": {
-          "CgroupPath": ""
-     },
+
+     "Id": "3513ca70583dd7ef2bac83331350f6b6c47d7b4e526c908e49d89ebf720e4693",
+     "Name": "foobar",
+     "Labels": {},
+     "CgroupParent": "/libpod_parent",
+     "CreateCgroup": true,
+     "Created": "2018-08-08T11:15:18.823115347-05:00"
+     "State": "created",
+     "Hostname": "",
+     "SharedNamespaces": [
+          "uts",
+          "ipc",
+          "net"
+     ]
+     "CreateInfra": false,
+     "InfraContainerID": "1020dd70583dd7ff2bac83331350f6b6e007de0d026c908e49d89ebf891d4699"
+     "CgroupPath": ""
      "Containers": [
           {
                "id": "d53f8bf1e9730281264aac6e6586e327429f62c704abea4b6afb5d8a2b2c9f2c",

pkg/domain/entities/pods.go

@@ -184,6 +184,8 @@ type PodInspectOptions struct {
 
 	// Options for the API.
 	NameOrID string
+
+	Format string
 }
 
 type PodInspectReport struct {

test/system/200-pod.bats

@@ -170,4 +170,16 @@ function random_ip() {
     is "$output" ".*options $dns_opt"        "--dns-opt was added"
 }
 
+@test "podman pod inspect - format" {
+    skip_if_remote "podman-pod does not work with podman-remote"
+
+    run_podman pod create --name podtest
+    podid=$output
+
+    run_podman pod inspect --format '-> {{.Name}}: {{.NumContainers}}' podtest
+    is "$output" "-> podtest: 1"
+
+    run_podman pod rm -f podtest
+}
+
 # vim: filetype=sh