[Feature] [Integration] Services Endpoint (#1761)

CHANGELOG.md

@@ -17,6 +17,7 @@
 - (Feature) (Platform) Storage V1Alpha1 RC
 - (Feature) (Networking) ArangoRotue WebSocket Support
 - (Feature) (Scheduler) Helm Driver Param
+- (Feature) (Integration) Services Endpoint
 
 ## [1.2.43](https://github.com/arangodb/kube-arangodb/tree/1.2.43) (2024-10-14)
 - (Feature) ArangoRoute CRD

integrations/pong/v1/definition/pong.pb.go

@@ -91,6 +91,122 @@ func (x *PongV1PingResponse) GetTime() *timestamppb.Timestamp {
 	return nil
 }
 
+// PongV1 Services Call Response
+type PongV1ServicesResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// List of the Services
+	Services []*PongV1Service `protobuf:"bytes,1,rep,name=services,proto3" json:"services,omitempty"`
+}
+
+func (x *PongV1ServicesResponse) Reset() {
+	*x = PongV1ServicesResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_integrations_pong_v1_definition_pong_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PongV1ServicesResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PongV1ServicesResponse) ProtoMessage() {}
+
+func (x *PongV1ServicesResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_integrations_pong_v1_definition_pong_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PongV1ServicesResponse.ProtoReflect.Descriptor instead.
+func (*PongV1ServicesResponse) Descriptor() ([]byte, []int) {
+	return file_integrations_pong_v1_definition_pong_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *PongV1ServicesResponse) GetServices() []*PongV1Service {
+	if x != nil {
+		return x.Services
+	}
+	return nil
+}
+
+// Service Definition
+type PongV1Service struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Service Name
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	// Service Version
+	Version string `protobuf:"bytes,2,opt,name=version,proto3" json:"version,omitempty"`
+	// states if service is enabled
+	Enabled bool `protobuf:"varint,3,opt,name=enabled,proto3" json:"enabled,omitempty"`
+}
+
+func (x *PongV1Service) Reset() {
+	*x = PongV1Service{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_integrations_pong_v1_definition_pong_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PongV1Service) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PongV1Service) ProtoMessage() {}
+
+func (x *PongV1Service) ProtoReflect() protoreflect.Message {
+	mi := &file_integrations_pong_v1_definition_pong_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PongV1Service.ProtoReflect.Descriptor instead.
+func (*PongV1Service) Descriptor() ([]byte, []int) {
+	return file_integrations_pong_v1_definition_pong_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *PongV1Service) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *PongV1Service) GetVersion() string {
+	if x != nil {
+		return x.Version
+	}
+	return ""
+}
+
+func (x *PongV1Service) GetEnabled() bool {
+	if x != nil {
+		return x.Enabled
+	}
+	return false
+}
+
 var File_integrations_pong_v1_definition_pong_proto protoreflect.FileDescriptor
 
 var file_integrations_pong_v1_definition_pong_proto_rawDesc = []byte{
@@ -106,15 +222,29 @@ var file_integrations_pong_v1_definition_pong_proto_rawDesc = []byte{
 	0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x2e, 0x0a, 0x04, 0x74, 0x69, 0x6d, 0x65,
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+	0x69, 0x74, 0x69, 0x6f, 0x6e, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -129,21 +259,26 @@ func file_integrations_pong_v1_definition_pong_proto_rawDescGZIP() []byte {
 	return file_integrations_pong_v1_definition_pong_proto_rawDescData
 }
 
-var file_integrations_pong_v1_definition_pong_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
+var file_integrations_pong_v1_definition_pong_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
 var file_integrations_pong_v1_definition_pong_proto_goTypes = []interface{}{
-	(*PongV1PingResponse)(nil),    // 0: pong.PongV1PingResponse
+	(*PongV1PingResponse)(nil),     // 0: pong.PongV1PingResponse
-	(*timestamppb.Timestamp)(nil), // 1: google.protobuf.Timestamp
+	(*PongV1ServicesResponse)(nil), // 1: pong.PongV1ServicesResponse
-	(*definition.Empty)(nil),      // 2: shared.Empty
+	(*PongV1Service)(nil),          // 2: pong.PongV1Service
+	(*timestamppb.Timestamp)(nil),  // 3: google.protobuf.Timestamp
+	(*definition.Empty)(nil),       // 4: shared.Empty
 }
 var file_integrations_pong_v1_definition_pong_proto_depIdxs = []int32{
-	1, // 0: pong.PongV1PingResponse.time:type_name -> google.protobuf.Timestamp
+	3, // 0: pong.PongV1PingResponse.time:type_name -> google.protobuf.Timestamp
-	2, // 1: pong.PongV1.Ping:input_type -> shared.Empty
+	2, // 1: pong.PongV1ServicesResponse.services:type_name -> pong.PongV1Service
-	0, // 2: pong.PongV1.Ping:output_type -> pong.PongV1PingResponse
+	4, // 2: pong.PongV1.Ping:input_type -> shared.Empty
-	2, // [2:3] is the sub-list for method output_type
+	4, // 3: pong.PongV1.Services:input_type -> shared.Empty
-	1, // [1:2] is the sub-list for method input_type
+	0, // 4: pong.PongV1.Ping:output_type -> pong.PongV1PingResponse
-	1, // [1:1] is the sub-list for extension type_name
+	1, // 5: pong.PongV1.Services:output_type -> pong.PongV1ServicesResponse
-	1, // [1:1] is the sub-list for extension extendee
+	4, // [4:6] is the sub-list for method output_type
-	0, // [0:1] is the sub-list for field type_name
+	2, // [2:4] is the sub-list for method input_type
+	2, // [2:2] is the sub-list for extension type_name
+	2, // [2:2] is the sub-list for extension extendee
+	0, // [0:2] is the sub-list for field type_name
 }
 
 func init() { file_integrations_pong_v1_definition_pong_proto_init() }
@@ -164,6 +299,30 @@ func file_integrations_pong_v1_definition_pong_proto_init() {
 				return nil
 			}
 		}
+		file_integrations_pong_v1_definition_pong_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PongV1ServicesResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_integrations_pong_v1_definition_pong_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PongV1Service); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -171,7 +330,7 @@ func file_integrations_pong_v1_definition_pong_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_integrations_pong_v1_definition_pong_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   1,
+			NumMessages:   3,
 			NumExtensions: 0,
 			NumServices:   1,
 		},

integrations/pong/v1/definition/pong.proto

@@ -32,6 +32,9 @@ option go_package = "github.com/arangodb/kube-arangodb/integrations/pong/v1/defi
 service PongV1 {
   // Sends ping to the server
   rpc Ping(shared.Empty) returns (PongV1PingResponse);
+
+  // Asks for the services details
+  rpc Services(shared.Empty) returns (PongV1ServicesResponse);
 }
 
 // Responses
@@ -41,4 +44,20 @@ service PongV1 {
 message PongV1PingResponse {
   // Current time in UTC
   google.protobuf.Timestamp time = 1;
+}
+
+// PongV1 Services Call Response
+message PongV1ServicesResponse {
+  // List of the Services
+  repeated PongV1Service services = 1;
+}
+
+// Service Definition
+message PongV1Service {
+  // Service Name
+  string name = 1;
+  // Service Version
+  string version = 2;
+  // states if service is enabled
+  bool enabled = 3;
 }

integrations/pong/v1/definition/pong_grpc.pb.go

@@ -25,6 +25,8 @@ const _ = grpc.SupportPackageIsVersion7
 type PongV1Client interface {
 	// Sends ping to the server
 	Ping(ctx context.Context, in *definition.Empty, opts ...grpc.CallOption) (*PongV1PingResponse, error)
+	// Asks for the services details
+	Services(ctx context.Context, in *definition.Empty, opts ...grpc.CallOption) (*PongV1ServicesResponse, error)
 }
 
 type pongV1Client struct {
@@ -44,12 +46,23 @@ func (c *pongV1Client) Ping(ctx context.Context, in *definition.Empty, opts ...g
 	return out, nil
 }
 
+func (c *pongV1Client) Services(ctx context.Context, in *definition.Empty, opts ...grpc.CallOption) (*PongV1ServicesResponse, error) {
+	out := new(PongV1ServicesResponse)
+	err := c.cc.Invoke(ctx, "/pong.PongV1/Services", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // PongV1Server is the server API for PongV1 service.
 // All implementations must embed UnimplementedPongV1Server
 // for forward compatibility
 type PongV1Server interface {
 	// Sends ping to the server
 	Ping(context.Context, *definition.Empty) (*PongV1PingResponse, error)
+	// Asks for the services details
+	Services(context.Context, *definition.Empty) (*PongV1ServicesResponse, error)
 	mustEmbedUnimplementedPongV1Server()
 }
 
@@ -60,6 +73,9 @@ type UnimplementedPongV1Server struct {
 func (UnimplementedPongV1Server) Ping(context.Context, *definition.Empty) (*PongV1PingResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Ping not implemented")
 }
+func (UnimplementedPongV1Server) Services(context.Context, *definition.Empty) (*PongV1ServicesResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Services not implemented")
+}
 func (UnimplementedPongV1Server) mustEmbedUnimplementedPongV1Server() {}
 
 // UnsafePongV1Server may be embedded to opt out of forward compatibility for this service.
@@ -91,6 +107,24 @@ func _PongV1_Ping_Handler(srv interface{}, ctx context.Context, dec func(interfa
 	return interceptor(ctx, in, info, handler)
 }
 
+func _PongV1_Services_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(definition.Empty)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(PongV1Server).Services(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/pong.PongV1/Services",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(PongV1Server).Services(ctx, req.(*definition.Empty))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // PongV1_ServiceDesc is the grpc.ServiceDesc for PongV1 service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -102,6 +136,10 @@ var PongV1_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "Ping",
 			Handler:    _PongV1_Ping_Handler,
 		},
+		{
+			MethodName: "Services",
+			Handler:    _PongV1_Services_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "integrations/pong/v1/definition/pong.proto",

integrations/pong/v1/impl.go

@@ -29,17 +29,54 @@ import (
 
 	pbPongV1 "github.com/arangodb/kube-arangodb/integrations/pong/v1/definition"
 	pbSharedV1 "github.com/arangodb/kube-arangodb/integrations/shared/v1/definition"
+	"github.com/arangodb/kube-arangodb/pkg/util"
+	"github.com/arangodb/kube-arangodb/pkg/util/errors"
 	"github.com/arangodb/kube-arangodb/pkg/util/svc"
 )
 
-func New() svc.Handler {
+type Service struct {
-	return &impl{}
+	Name, Version string
+	Enabled       bool
+}
+
+func (s Service) asService() *pbPongV1.PongV1Service {
+	return &pbPongV1.PongV1Service{
+		Name:    s.Name,
+		Version: s.Version,
+		Enabled: s.Enabled,
+	}
+}
+
+func New(services ...Service) (svc.Handler, error) {
+	pServices := make(util.List[Service], 0, len(services))
+
+	for _, svc := range services {
+		if pServices.Contains(func(service Service) bool {
+			return service.Name == svc.Name && service.Version == svc.Version
+		}) {
+			return nil, errors.Errorf("Service %s/%s already registered", svc.Name, svc.Version)
+		}
+
+		pServices = pServices.Append(svc)
+	}
+
+	pServices = pServices.Sort(func(a Service, b Service) bool {
+		if a.Name == b.Name {
+			return a.Version < b.Version
+		}
+
+		return a.Name < b.Name
+	})
+
+	return &impl{services: pServices.List()}, nil
 }
 
 var _ pbPongV1.PongV1Server = &impl{}
 var _ svc.Handler = &impl{}
 
 type impl struct {
+	services []Service
+
 	pbPongV1.UnimplementedPongV1Server
 }
 
@@ -54,6 +91,19 @@ func (i *impl) Health() svc.HealthState {
 func (i *impl) Register(registrar *grpc.Server) {
 	pbPongV1.RegisterPongV1Server(registrar, i)
 }
+
 func (i *impl) Ping(context.Context, *pbSharedV1.Empty) (*pbPongV1.PongV1PingResponse, error) {
 	return &pbPongV1.PongV1PingResponse{Time: timestamppb.New(time.Now().UTC())}, nil
 }
+
+func (i *impl) Services(context.Context, *pbSharedV1.Empty) (*pbPongV1.PongV1ServicesResponse, error) {
+	var r = make([]*pbPongV1.PongV1Service, len(i.services))
+
+	for id := range i.services {
+		r[id] = i.services[id].asService()
+	}
+
+	return &pbPongV1.PongV1ServicesResponse{
+		Services: r,
+	}, nil
+}

integrations/pong/v1/service_test.go

@@ -33,10 +33,13 @@ import (
 	"github.com/arangodb/kube-arangodb/pkg/util/tests/tgrpc"
 )
 
-func Client(t *testing.T, ctx context.Context) pbPongV1.PongV1Client {
+func Client(t *testing.T, ctx context.Context, services ...Service) pbPongV1.PongV1Client {
+	h, err := New(services...)
+	require.NoError(t, err)
+
 	local := svc.NewService(svc.Configuration{
 		Address: "127.0.0.1:0",
-	}, New())
+	}, h)
 
 	start := local.Start(ctx)
 
@@ -61,3 +64,36 @@ func Test_Ping(t *testing.T) {
 
 	require.True(t, r2.GetTime().AsTime().After(r1.GetTime().AsTime()))
 }
+
+func Test_Services(t *testing.T) {
+	ctx, c := context.WithCancel(context.Background())
+	defer c()
+
+	v2 := Service{
+		Name:    "A",
+		Version: "V2",
+		Enabled: true,
+	}
+
+	v3 := Service{
+		Name:    "A",
+		Version: "V3",
+		Enabled: false,
+	}
+
+	client := Client(t, ctx,
+		v3,
+		v2,
+	)
+
+	r1, err := client.Services(ctx, &pbSharedV1.Empty{})
+	require.NoError(t, err)
+
+	require.Len(t, r1.GetServices(), 2)
+
+	require.NotNil(t, r1.GetServices()[0])
+	require.NotNil(t, r1.GetServices()[1])
+
+	require.EqualValues(t, v2.asService(), r1.GetServices()[0])
+	require.EqualValues(t, v3.asService(), r1.GetServices()[1])
+}

pkg/integrations/clients/pong_v1.go

@@ -21,10 +21,13 @@
 package clients
 
 import (
+	"fmt"
+
 	"github.com/spf13/cobra"
 
 	pbPongV1 "github.com/arangodb/kube-arangodb/integrations/pong/v1/definition"
 	pbSharedV1 "github.com/arangodb/kube-arangodb/integrations/shared/v1/definition"
+	"github.com/arangodb/kube-arangodb/pkg/util"
 	"github.com/arangodb/kube-arangodb/pkg/util/shutdown"
 )
 
@@ -61,6 +64,15 @@ func (s *pongV1) Register(cmd *cobra.Command) error {
 			return err
 		}
 
+		services, err := client.Services(shutdown.Context(), &pbSharedV1.Empty{})
+		if err != nil {
+			return err
+		}
+
+		for _, svc := range services.GetServices() {
+			println(fmt.Sprintf("%s.%s: %s", svc.GetName(), svc.GetVersion(), util.BoolSwitch(svc.GetEnabled(), "Enabled", "Disabled")))
+		}
+
 		return nil
 	}
 	return nil

pkg/integrations/integration.go

@@ -32,6 +32,7 @@ type Factory func() Integration
 
 type Integration interface {
 	Name() string
+
 	Description() string
 
 	Register(cmd *cobra.Command, fs FlagEnvHandler) error

pkg/integrations/register.go

@@ -196,11 +196,7 @@ func (c *configuration) runWithContext(ctx context.Context, cancel context.Cance
 
 	var internalHandlers, externalHandlers, healthHandlers []svc.Handler
 
-	pong := pbImplPongV1.New()
+	var services []pbImplPongV1.Service
-
-	internalHandlers = append(internalHandlers, pong)
-	externalHandlers = append(externalHandlers, pong)
-	healthHandlers = append(healthHandlers, pong)
 
 	for _, handler := range c.registered {
 		if ok, err := cmd.Flags().GetBool(fmt.Sprintf("integration.%s", handler.Name())); err != nil {
@@ -223,6 +219,17 @@ func (c *configuration) runWithContext(ctx context.Context, cancel context.Cance
 				Bool("external", externalEnabled).
 				Info("Service discovered")
 
+			ps := strings.Split(handler.Name(), ".")
+			if len(ps) < 2 {
+				return errors.Errorf("Expected atleast 2 elements")
+			}
+
+			services = append(services, pbImplPongV1.Service{
+				Name:    strings.Join(ps[:len(ps)-1], "."),
+				Version: ps[len(ps)-1],
+				Enabled: ok,
+			})
+
 			if ok && (internalEnabled || externalEnabled) {
 				if svc, err := handler.Handler(ctx, cmd); err != nil {
 					return err
@@ -239,6 +246,15 @@ func (c *configuration) runWithContext(ctx context.Context, cancel context.Cance
 		}
 	}
 
+	pong, err := pbImplPongV1.New(services...)
+	if err != nil {
+		return err
+	}
+
+	internalHandlers = append(internalHandlers, pong)
+	externalHandlers = append(externalHandlers, pong)
+	healthHandlers = append(healthHandlers, pong)
+
 	if c.health.shutdownEnabled {
 		healthHandlers = append(healthHandlers, pbImplShutdownV1.New(cancel))
 	}