api: add CreatedAt to v1.Pod

api/v1/json.go

@@ -77,6 +77,8 @@ type (
 		AppNames []string `json:"app_names,omitempty"`
 		// Apps holds current information about each app.
 		Apps []*App `json:"apps,omitempty"`
+		// The creation time of the pod.
+		CreatedAt *int64 `json:"created_at,omitempty"`
 		// The start time of the pod.
 		StartedAt *int64 `json:"started_at,omitempty"`
 		// UserAnnotations are the pod user annotations.

lib/pod.go

@@ -15,6 +15,8 @@
 package rkt
 
 import (
+	"errors"
+
 	"github.com/rkt/rkt/api/v1"
 	pkgPod "github.com/rkt/rkt/pkg/pod"
 )
@@ -37,6 +39,17 @@ func NewPodFromInternalPod(p *pkgPod.Pod) (*v1.Pod, error) {
 		pod.StartedAt = &startedAt
 	}
 
+	creationTime, err := p.CreationTime()
+	if err != nil {
+		return nil, err
+	}
+
+	createdAt := creationTime.Unix()
+	if creationTime.IsZero() || createdAt <= 0 {
+		return nil, errors.New("invalid creation time")
+	}
+	pod.CreatedAt = &createdAt
+
 	if !p.PodManifestAvailable() {
 		return pod, nil
 	}

tests/rkt_tests.go

@@ -673,6 +673,14 @@ func parsePodInfoOutput(t *testing.T, result string, p *podInfo) {
 			}
 		}
 	}
+
+	if p.state == "" {
+		t.Fatalf("Unexpected empty state for pod")
+	}
+
+	if p.createdAt <= 0 {
+		t.Fatalf("Unexpected createdAt <= 0 for pod")
+	}
 }
 
 func getPodDir(t *testing.T, ctx *testutils.RktRunCtx, podID string) string {