feat: Add GetInstance endpoint (#9452)

internal/api/grpc/instance/v2/converter.go

@@ -0,0 +1,41 @@
+package instance
+
+import (
+	"github.com/zitadel/zitadel/cmd/build"
+	"github.com/zitadel/zitadel/internal/api/grpc/object/v2"
+	"github.com/zitadel/zitadel/internal/query"
+	"github.com/zitadel/zitadel/pkg/grpc/instance/v2"
+)
+
+func ToProtoObject(inst *query.Instance) *instance.Instance {
+	return &instance.Instance{
+		Id:      inst.ID,
+		Name:    inst.Name,
+		Domains: DomainsToPb(inst.Domains),
+		Version: build.Version(),
+		Details: object.ToViewDetailsPb(inst.Sequence, inst.CreationDate, inst.ChangeDate, inst.ID),
+	}
+}
+
+func DomainsToPb(domains []*query.InstanceDomain) []*instance.Domain {
+	d := []*instance.Domain{}
+	for _, dm := range domains {
+		pbDomain := DomainToPb(dm)
+		d = append(d, pbDomain)
+	}
+	return d
+}
+
+func DomainToPb(d *query.InstanceDomain) *instance.Domain {
+	return &instance.Domain{
+		Domain:    d.Domain,
+		Primary:   d.IsPrimary,
+		Generated: d.IsGenerated,
+		Details: object.ToViewDetailsPb(
+			d.Sequence,
+			d.CreationDate,
+			d.ChangeDate,
+			d.InstanceID,
+		),
+	}
+}

internal/api/grpc/instance/v2/query.go

@@ -0,0 +1,19 @@
+package instance
+
+import (
+	"context"
+
+	"github.com/zitadel/zitadel/pkg/grpc/instance/v2"
+	"google.golang.org/protobuf/types/known/emptypb"
+)
+
+func (s *Server) GetInstance(ctx context.Context, _ *emptypb.Empty) (*instance.GetInstanceResponse, error) {
+	inst, err := s.query.Instance(ctx, true)
+	if err != nil {
+		return nil, err
+	}
+
+	return &instance.GetInstanceResponse{
+		Instance: ToProtoObject(inst),
+	}, nil
+}

internal/api/grpc/object/v2/converter.go

@@ -2,6 +2,7 @@ package object
 
 import (
 	"context"
+	"time"
 
 	"google.golang.org/protobuf/types/known/timestamppb"
 
@@ -176,3 +177,22 @@ func MFAStateToPb(state domain.MFAState) user_pb.AuthFactorState {
 		return user_pb.AuthFactorState_AUTH_FACTOR_STATE_UNSPECIFIED
 	}
 }
+
+func ToViewDetailsPb(
+	sequence uint64,
+	creationDate,
+	changeDate time.Time,
+	resourceOwner string,
+) *object.Details {
+	details := &object.Details{
+		Sequence:      sequence,
+		ResourceOwner: resourceOwner,
+	}
+	if !creationDate.IsZero() {
+		details.CreationDate = timestamppb.New(creationDate)
+	}
+	if !changeDate.IsZero() {
+		details.ChangeDate = timestamppb.New(changeDate)
+	}
+	return details
+}