IAM: Create Service Account API and legacy store impl (#110411)

* wip

* IAM: Create Service Account

* Add dual writer

* Update openapi_test.go

* Add integration tests

* Add sql tests

* Add Role to SA spec, add validation, add DBTime, add tests

* Format, update test

* Fixes

* Add check for External

* Address feedback

* Update tests

* Address feedback

* make gen-go

* Simplify a bit

* Fixes

* make update-workspace

* Update pkg/registry/apis/iam/serviceaccount/store.go

Co-authored-by: Ryan McKinley <ryantxu@gmail.com>

* Address feedback, add test for generateName

---------

Co-authored-by: Ryan McKinley <ryantxu@gmail.com>

pkg/registry/apis/iam/legacy/sql.go

@@ -2,9 +2,11 @@ package legacy
 
 import (
 	"context"
+	"database/sql/driver"
 	"embed"
 	"fmt"
 	"text/template"
+	"time"
 
 	claims "github.com/grafana/authlib/types"
 	"github.com/grafana/grafana/pkg/storage/legacysql"
@@ -22,6 +24,8 @@ type LegacyIdentityStore interface {
 
 	GetServiceAccountInternalID(ctx context.Context, ns claims.NamespaceInfo, query GetServiceAccountInternalIDQuery) (*GetServiceAccountInternalIDResult, error)
 	ListServiceAccounts(ctx context.Context, ns claims.NamespaceInfo, query ListServiceAccountsQuery) (*ListServiceAccountResult, error)
+	CreateServiceAccount(ctx context.Context, ns claims.NamespaceInfo, cmd CreateServiceAccountCommand) (*CreateServiceAccountResult, error)
+
 	ListServiceAccountTokens(ctx context.Context, ns claims.NamespaceInfo, query ListServiceAccountTokenQuery) (*ListServiceAccountTokenResult, error)
 
 	GetTeamInternalID(ctx context.Context, ns claims.NamespaceInfo, query GetTeamInternalIDQuery) (*GetTeamInternalIDResult, error)
@@ -30,9 +34,7 @@ type LegacyIdentityStore interface {
 	ListTeamMembers(ctx context.Context, ns claims.NamespaceInfo, query ListTeamMembersQuery) (*ListTeamMembersResult, error)
 }
 
-var (
-	_ LegacyIdentityStore = (*legacySQLStore)(nil)
-)
+var _ LegacyIdentityStore = (*legacySQLStore)(nil)
 
 func NewLegacySQLStores(sql legacysql.LegacyDatabaseProvider) LegacyIdentityStore {
 	return &legacySQLStore{
@@ -58,3 +60,47 @@ func mustTemplate(filename string) *template.Template {
 	}
 	panic(fmt.Sprintf("template file not found: %s", filename))
 }
+
+type DBTime struct {
+	time.Time
+}
+
+func NewDBTime(t time.Time) DBTime {
+	return DBTime{Time: t}
+}
+
+func (t DBTime) Value() (driver.Value, error) {
+	if t.IsZero() {
+		return nil, nil
+	}
+
+	return t.Format(time.DateTime), nil
+}
+
+func (t *DBTime) Scan(value interface{}) error {
+	if value == nil {
+		t.Time = time.Time{}
+		return nil
+	}
+
+	var parsedTime time.Time
+	var err error
+
+	switch v := value.(type) {
+	case []byte:
+		parsedTime, err = time.Parse(time.DateTime, string(v))
+	case string:
+		parsedTime, err = time.Parse(time.DateTime, v)
+	case time.Time:
+		parsedTime = v
+	default:
+		return fmt.Errorf("could not scan type %T into DBTime", value)
+	}
+
+	if err != nil {
+		return fmt.Errorf("could not parse time: %w", err)
+	}
+
+	t.Time = parsedTime
+	return nil
+}