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
+}

proto/zitadel/instance/v2/instance.proto

@@ -0,0 +1,52 @@
+syntax = "proto3";
+
+import "protoc-gen-openapiv2/options/annotations.proto";
+import "zitadel/object/v2/object.proto";
+
+package zitadel.instance.v2;
+
+option go_package = "github.com/zitadel/zitadel/pkg/grpc/instance/v2;instance";
+
+message Instance {
+  string id = 1 [
+      (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {
+          example: "\"69629023906488334\""
+      }
+  ];
+  zitadel.object.v2.Details details = 2;
+  State state = 3 [
+      (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {
+          description: "current state of the instance";
+      }
+  ];
+  string name = 4 [
+      (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {
+          example: "\"ZITADEL\"";
+      }
+  ];
+  string version = 5 [
+      (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {
+          example: "\"1.0.0\"";
+      }
+  ];
+  repeated Domain domains = 6;
+}
+
+enum State {
+    STATE_UNSPECIFIED = 0;
+    STATE_CREATING = 1;
+    STATE_RUNNING = 2;
+    STATE_STOPPING = 3;
+    STATE_STOPPED = 4;
+}
+
+message Domain {
+    zitadel.object.v2.Details details = 1;
+    string domain = 2 [
+        (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {
+            example: "\"zitadel.com\""
+        }
+    ];
+    bool primary = 3;
+    bool generated = 4;
+}

proto/zitadel/instance/v2/instance_service.proto

@@ -4,6 +4,8 @@ package zitadel.instance.v2;
 
 import "validate/validate.proto";
 import "zitadel/object/v2/object.proto";
+import "zitadel/instance/v2/instance.proto";
+import "google/protobuf/empty.proto";
 import "protoc-gen-openapiv2/options/annotations.proto";
 import "google/api/annotations.proto";
 import "google/api/field_behavior.proto";
@@ -115,6 +117,10 @@ message DeleteInstanceResponse {
   zitadel.object.v2.Details details = 1;
 }
 
+message GetInstanceResponse {
+  zitadel.instance.v2.Instance instance = 1;
+}
+
 service InstanceService {
 
   // DeleteInstance deletes an instance with the given ID.
@@ -148,10 +154,39 @@ service InstanceService {
       }
     };
   }
+
+  // GetInstance returns the instance for the current context.
+  rpc GetInstance(google.protobuf.Empty) returns (GetInstanceResponse) {
+    option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+      description: "Gets the instance associated to the current context";
+      tags: "Instance";
+      responses: {
+        key: "200";
+        value: {
+          description: "The instance of the context.";
+          schema: {
+            json_schema: {
+              ref: "#/definitions/GetInstanceResponse";
+            }
+          };
+        }
+      };
+    };
+
+    option (google.api.http) = {
+      get: "/v2/instances/current"
+    };
+
+    option (zitadel.protoc_gen_zitadel.v2.options) = {
+      auth_option: {
+        permission: "instance.get"
+      }
+    };
+  }
+
 }
 
 // UpdateInstance
-// GetInstance
 // ListInstances
 // DeleteInstance