Add grpc health check. (#304)

* Add grpc health check. Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com> * fix missing package. Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com> * fix readme.. Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com> * fix vet Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
2017-11-12 08:44:33 -06:00
parent ff4ab7002f
commit 25bfe420b0
22 changed files with 1391 additions and 37 deletions
--- a/rpc/proto/gorush.pb.go
+++ b/rpc/proto/gorush.pb.go
@@ -10,6 +10,8 @@ It is generated from these files:
 It has these top-level messages:
 	NotificationRequest
 	NotificationReply
+	HealthCheckRequest
+	HealthCheckResponse
 */
 package proto

@@ -33,6 +35,32 @@ var _ = math.Inf
 // proto package needs to be updated.
 const _ = proto1.ProtoPackageIsVersion2 // please upgrade the proto package

+type HealthCheckResponse_ServingStatus int32
+
+const (
+	HealthCheckResponse_UNKNOWN     HealthCheckResponse_ServingStatus = 0
+	HealthCheckResponse_SERVING     HealthCheckResponse_ServingStatus = 1
+	HealthCheckResponse_NOT_SERVING HealthCheckResponse_ServingStatus = 2
+)
+
+var HealthCheckResponse_ServingStatus_name = map[int32]string{
+	0: "UNKNOWN",
+	1: "SERVING",
+	2: "NOT_SERVING",
+}
+var HealthCheckResponse_ServingStatus_value = map[string]int32{
+	"UNKNOWN":     0,
+	"SERVING":     1,
+	"NOT_SERVING": 2,
+}
+
+func (x HealthCheckResponse_ServingStatus) String() string {
+	return proto1.EnumName(HealthCheckResponse_ServingStatus_name, int32(x))
+}
+func (HealthCheckResponse_ServingStatus) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor0, []int{3, 0}
+}
+
 type NotificationRequest struct {
 	Tokens   []string `protobuf:"bytes,1,rep,name=tokens" json:"tokens,omitempty"`
 	Platform int32    `protobuf:"varint,2,opt,name=platform" json:"platform,omitempty"`
@@ -113,9 +141,44 @@ func (m *NotificationReply) GetCounts() int32 {
 	return 0
 }

+type HealthCheckRequest struct {
+	Service string `protobuf:"bytes,1,opt,name=service" json:"service,omitempty"`
+}
+
+func (m *HealthCheckRequest) Reset()                    { *m = HealthCheckRequest{} }
+func (m *HealthCheckRequest) String() string            { return proto1.CompactTextString(m) }
+func (*HealthCheckRequest) ProtoMessage()               {}
+func (*HealthCheckRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
+
+func (m *HealthCheckRequest) GetService() string {
+	if m != nil {
+		return m.Service
+	}
+	return ""
+}
+
+type HealthCheckResponse struct {
+	Status HealthCheckResponse_ServingStatus `protobuf:"varint,1,opt,name=status,enum=proto.HealthCheckResponse_ServingStatus" json:"status,omitempty"`
+}
+
+func (m *HealthCheckResponse) Reset()                    { *m = HealthCheckResponse{} }
+func (m *HealthCheckResponse) String() string            { return proto1.CompactTextString(m) }
+func (*HealthCheckResponse) ProtoMessage()               {}
+func (*HealthCheckResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
+
+func (m *HealthCheckResponse) GetStatus() HealthCheckResponse_ServingStatus {
+	if m != nil {
+		return m.Status
+	}
+	return HealthCheckResponse_UNKNOWN
+}
+
 func init() {
 	proto1.RegisterType((*NotificationRequest)(nil), "proto.NotificationRequest")
 	proto1.RegisterType((*NotificationReply)(nil), "proto.NotificationReply")
+	proto1.RegisterType((*HealthCheckRequest)(nil), "proto.HealthCheckRequest")
+	proto1.RegisterType((*HealthCheckResponse)(nil), "proto.HealthCheckResponse")
+	proto1.RegisterEnum("proto.HealthCheckResponse_ServingStatus", HealthCheckResponse_ServingStatus_name, HealthCheckResponse_ServingStatus_value)
 }

 // Reference imports to suppress errors if they are not otherwise used.
@@ -190,23 +253,95 @@ var _Gorush_serviceDesc = grpc.ServiceDesc{
 	Metadata: "gorush.proto",
 }

+// Client API for Health service
+
+type HealthClient interface {
+	Check(ctx context.Context, in *HealthCheckRequest, opts ...grpc.CallOption) (*HealthCheckResponse, error)
+}
+
+type healthClient struct {
+	cc *grpc.ClientConn
+}
+
+func NewHealthClient(cc *grpc.ClientConn) HealthClient {
+	return &healthClient{cc}
+}
+
+func (c *healthClient) Check(ctx context.Context, in *HealthCheckRequest, opts ...grpc.CallOption) (*HealthCheckResponse, error) {
+	out := new(HealthCheckResponse)
+	err := grpc.Invoke(ctx, "/proto.Health/Check", in, out, c.cc, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// Server API for Health service
+
+type HealthServer interface {
+	Check(context.Context, *HealthCheckRequest) (*HealthCheckResponse, error)
+}
+
+func RegisterHealthServer(s *grpc.Server, srv HealthServer) {
+	s.RegisterService(&_Health_serviceDesc, srv)
+}
+
+func _Health_Check_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(HealthCheckRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(HealthServer).Check(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/proto.Health/Check",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(HealthServer).Check(ctx, req.(*HealthCheckRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+var _Health_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "proto.Health",
+	HandlerType: (*HealthServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Check",
+			Handler:    _Health_Check_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "gorush.proto",
+}
+
 func init() { proto1.RegisterFile("gorush.proto", fileDescriptor0) }

 var fileDescriptor0 = []byte{
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 }
--- a/rpc/proto/gorush.proto
+++ b/rpc/proto/gorush.proto
@@ -20,3 +20,19 @@ service Gorush {
  rpc Send (NotificationRequest) returns (NotificationReply) {}
 }

+message HealthCheckRequest {
+  string service = 1;
+}
+
+message HealthCheckResponse {
+  enum ServingStatus {
+    UNKNOWN = 0;
+    SERVING = 1;
+    NOT_SERVING = 2;
+  }
+  ServingStatus status = 1;
+}
+
+service Health {
+  rpc Check(HealthCheckRequest) returns (HealthCheckResponse);
+}