add creationTime attribute

cmds/ocm/commands/ocmcmds/common/addhdlrs/comp/elements.go

@@ -82,6 +82,7 @@ func (*ResourceSpecHandler) Add(ctx clictx.Context, ictx inputs.Context, elem ad
 
 	cd.Labels = r.Labels
 	cd.Provider = r.Provider
+	cd.CreationTime = metav1.NewTimestampP()
 
 	err = handle(ctx, ictx, elem.Source(), cv, r.Sources, srcs.ResourceSpecHandler{})
 	if err != nil {

cmds/ocm/commands/ocmcmds/common/resources.go

@@ -8,13 +8,13 @@ import (
 	"encoding/json"
 	"fmt"
 
-	_ "github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs/types"
-
 	"github.com/mandelsoft/vfs/pkg/vfs"
 	"github.com/spf13/pflag"
 	"golang.org/x/text/cases"
 	"golang.org/x/text/language"
 
+	_ "github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs/types"
+
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/addhdlrs"
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs"
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/options/dryrunoption"

cmds/ocm/commands/ocmcmds/componentarchive/create/cmd.go

@@ -141,6 +141,7 @@ func (o *Command) Run() error {
 	desc.Provider.Name = metav1.ProviderName(o.Provider)
 	desc.Provider.Labels = o.ProviderLabels
 	desc.Labels = o.Labels
+	desc.CreationTime = metav1.NewTimestampP()
 
 	err = compdesc.Validate(desc)
 	if err != nil {

docs/ocm/model.md

@@ -119,6 +119,7 @@ A component descriptor describes:
 - a history of [Repository Contexts](#repository-contexts) describing
   former repository locations of the component version along a transportation
   chain
+- an optional creation timestamp (RFC3339) rounded to seconds.
 - a set of [Labels](#labels) to assign arbitrary kinds of information to the
   component version, which is not formally defined by the Open Component Model
 - an optional set of [Sources](#sources), that were used to generate the 

hack/Makefile

@@ -59,6 +59,10 @@ go-bindata:
 $(GOPATH)/bin/goimports:
 	go install -v golang.org/x/tools/cmd/goimports@latest
 
+Linux_jq:
+	$(info -> jq is missing)
+	$(info -  sudo apt-get install jq / sudo dnf install jq / sudo zypper install jq / sudo pacman -S jq)
+
 Darwin_sed: Darwin
 	$(info -> GNU sed is missing)
 	$(info -  brew install gnu-sed)

pkg/contexts/ocm/compdesc/meta/v1/types.go

@@ -5,7 +5,11 @@
 package v1
 
 import (
+	"time"
+
 	"k8s.io/apimachinery/pkg/util/validation/field"
+
+	"github.com/open-component-model/ocm/pkg/errors"
 )
 
 const (
@@ -73,6 +77,9 @@ type ObjectMeta struct {
 	Labels Labels `json:"labels,omitempty"`
 	// Provider described the component provider
 	Provider Provider `json:"provider"`
+	// CreationTime is the creation time of component version
+	// +optional
+	CreationTime *Timestamp `json:"creationTime,omitempty"`
 }
 
 // GetName returns the name of the object.
@@ -151,3 +158,69 @@ func (o *Provider) Copy() *Provider {
 		Labels: o.Labels.Copy(),
 	}
 }
+
+////////////////////////////////////////////////////////////////////////////////
+
+type _time = time.Time
+
+// Timestamp is time rounded to seconds.
+type Timestamp struct {
+	_time
+}
+
+func NewTimestamp() Timestamp {
+	return Timestamp{time.Now().Round(time.Second)}
+}
+
+func NewTimestampP() *Timestamp {
+	return &Timestamp{time.Now().Round(time.Second)}
+}
+
+func NewTimestampFor(t time.Time) Timestamp {
+	return Timestamp{t.Round(time.Second)}
+}
+
+// MarshalJSON implements the json.Marshaler interface.
+// The time is a quoted string in RFC 3339 format, with sub-second precision added if present.
+func (t Timestamp) MarshalJSON() ([]byte, error) {
+	if y := t.Year(); y < 0 || y >= 10000 {
+		// RFC 3339 is clear that years are 4 digits exactly.
+		// See golang.org/issue/4556#c15 for more discussion.
+		return nil, errors.New("Time.MarshalJSON: year outside of range [0,9999]")
+	}
+
+	b := make([]byte, 0, len(time.RFC3339)+2)
+	b = append(b, '"')
+	b = t.AppendFormat(b, time.RFC3339)
+	b = append(b, '"')
+	return b, nil
+}
+
+// UnmarshalJSON implements the json.Unmarshaler interface.
+// The time is expected to be a quoted string in RFC 3339 format.
+func (t *Timestamp) UnmarshalJSON(data []byte) error {
+	// Ignore null, like in the main JSON package.
+	if string(data) == "null" {
+		return nil
+	}
+	// Fractional seconds are handled implicitly by Parse.
+	tt, err := time.Parse(`"`+time.RFC3339+`"`, string(data))
+	*t = NewTimestampFor(tt)
+	return err
+}
+
+func (t *Timestamp) Time() time.Time {
+	return t._time
+}
+
+func (t *Timestamp) Equal(o Timestamp) bool {
+	return t._time.Equal(o._time)
+}
+
+func (t *Timestamp) UTC() Timestamp {
+	return NewTimestampFor(t._time.UTC())
+}
+
+func (t *Timestamp) Add(d time.Duration) Timestamp {
+	return NewTimestampFor(t._time.Add(d))
+}

pkg/contexts/ocm/compdesc/versions/v2/componentdescriptor.go

@@ -67,6 +67,9 @@ type ObjectMeta struct {
 	// describing the object.
 	// +optional
 	Labels metav1.Labels `json:"labels,omitempty"`
+	// CreationTime is the creation time of the component version
+	// +optional
+	CreationTime *metav1.Timestamp `json:"creationTime,omitempty"`
 }
 
 // GetName returns the name of the object.