feat: [NPM] define transport shim layer using gRPC (#1163)

Makefile

@@ -425,6 +425,9 @@ $(CONTROLLER_GEN): $(TOOLS_DIR)/go.mod
 
 controller-gen: $(CONTROLLER_GEN) ## Build controller-gen
 
+protoc: 
+	source ${REPO_ROOT}/scripts/install-protoc.sh
+
 $(GOCOV): $(TOOLS_DIR)/go.mod
 	cd $(TOOLS_DIR); go mod download; go build -tags=tools -o bin/gocov github.com/axw/gocov/gocov
 
@@ -458,4 +461,4 @@ mockgen: $(MOCKGEN) ## Build mockgen
 clean-tools: 
 	rm -r build/tools/bin
 
-tools: gocov gocov-xml go-junit-report golangci-lint gofumpt ## Build bins for build tools
+tools: gocov gocov-xml go-junit-report golangci-lint gofumpt protoc ## Build bins for build tools

build/tools/tools.go

@@ -9,5 +9,7 @@ import (
 	_ "github.com/golangci/golangci-lint/cmd/golangci-lint"
 	_ "github.com/jstemmer/go-junit-report"
 	_ "mvdan.cc/gofumpt"
+	_ "google.golang.org/protobuf/cmd/protoc-gen-go"
+	_ "google.golang.org/grpc/cmd/protoc-gen-go-grpc"
 	_ "sigs.k8s.io/controller-tools/cmd/controller-gen"
 )

go.mod

@@ -94,12 +94,14 @@ require (
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
 	k8s.io/component-base v0.22.1 // indirect
-	k8s.io/klog/v2 v2.9.0 // indirect
+	k8s.io/klog/v2 v2.9.0
 	k8s.io/kube-openapi v0.0.0-20211109043538-20434351676c // indirect
 	sigs.k8s.io/structured-merge-diff/v4 v4.1.2 // indirect
 )
 
 require (
+	github.com/fatih/structs v1.1.0
+	github.com/gofrs/uuid v3.3.0+incompatible // indirect
 	github.com/jsternberg/zap-logfmt v1.2.0
 	go.uber.org/zap v1.18.1
 )

go.sum

@@ -295,6 +295,8 @@ github.com/evanphx/json-patch v4.11.0+incompatible h1:glyUF9yIYtMHzn8xaKw5rMhdWc
 github.com/evanphx/json-patch v4.11.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
 github.com/fatih/color v1.9.0/go.mod h1:eQcE1qtQxscV5RaZvpXrrb8Drkc3/DdQ+uUYCNjL+zU=
+github.com/fatih/structs v1.1.0 h1:Q7juDM0QtcnhCpeyLGQKyg4TOIghuNXrkL32pHAUMxo=
+github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga6PJ7M=
 github.com/felixge/httpsnoop v1.0.1/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
 github.com/form3tech-oss/jwt-go v3.2.2+incompatible/go.mod h1:pbq4aXjuKjdthFRnoDwaVPLA+WlJuPGy+QneDUgJi2k=
 github.com/form3tech-oss/jwt-go v3.2.3+incompatible/go.mod h1:pbq4aXjuKjdthFRnoDwaVPLA+WlJuPGy+QneDUgJi2k=

npm/Makefile

@@ -0,0 +1,13 @@
+TARGET_DIRS = \
+	./pkg/dataplane \
+	./pkg/controlplane \
+	./pkg/transport \
+	./pkg/protos
+all: generate
+
+generate:
+	for dir in $(TARGET_DIRS); do \
+			make -C $$dir $@; \
+	done
+
+.PHONY: all generate

npm/pkg/dataplane/mocks/genericdataplane_generated.go

@@ -2,7 +2,7 @@
 //
 
 // Code generated by MockGen. DO NOT EDIT.
-// Source: /mnt/c/Users/vamsi/Desktop/Microsoft_ws/azure-container-networking/npm/pkg/dataplane/types.go
+// Source: /home/nitishm/github/nitishm/azure-container-networking/npm/pkg/dataplane/types.go
 
 // Package mocks is a generated GoMock package.
 package mocks

npm/pkg/protos/Makefile

@@ -0,0 +1,8 @@
+REPO_ROOT = $(shell git rev-parse --show-toplevel)
+PROTOC_INSTALL_PATH=$(HOME)/.local
+PROTOC_BIN=$(PROTOC_INSTALL_PATH)/bin/protoc
+
+.PHONY: generate
+
+generate: $(PROTOC_BIN) ## Generate mock clients
+	$(PROTOC_BIN) --proto_path=. --go_out=. --go-grpc_out=. --go_opt=paths=source_relative --go-grpc_opt=paths=source_relative transport.proto 

npm/pkg/protos/transport.pb.go

@@ -0,0 +1,491 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.19.1
+// source: transport.proto
+
+package protos
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	structpb "google.golang.org/protobuf/types/known/structpb"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type DatapathPodMetadata_APIVersion int32
+
+const (
+	DatapathPodMetadata_V1 DatapathPodMetadata_APIVersion = 0
+)
+
+// Enum value maps for DatapathPodMetadata_APIVersion.
+var (
+	DatapathPodMetadata_APIVersion_name = map[int32]string{
+		0: "V1",
+	}
+	DatapathPodMetadata_APIVersion_value = map[string]int32{
+		"V1": 0,
+	}
+)
+
+func (x DatapathPodMetadata_APIVersion) Enum() *DatapathPodMetadata_APIVersion {
+	p := new(DatapathPodMetadata_APIVersion)
+	*p = x
+	return p
+}
+
+func (x DatapathPodMetadata_APIVersion) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (DatapathPodMetadata_APIVersion) Descriptor() protoreflect.EnumDescriptor {
+	return file_transport_proto_enumTypes[0].Descriptor()
+}
+
+func (DatapathPodMetadata_APIVersion) Type() protoreflect.EnumType {
+	return &file_transport_proto_enumTypes[0]
+}
+
+func (x DatapathPodMetadata_APIVersion) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use DatapathPodMetadata_APIVersion.Descriptor instead.
+func (DatapathPodMetadata_APIVersion) EnumDescriptor() ([]byte, []int) {
+	return file_transport_proto_rawDescGZIP(), []int{0, 0}
+}
+
+// The following events are supported:
+type Events_EventType int32
+
+const (
+	// Send a CREATE/UPDATE event to a datapath Pod
+	Events_APPLY Events_EventType = 0
+	// Send a DELETE event to a datapath Pod
+	Events_REMOVE Events_EventType = 1
+)
+
+// Enum value maps for Events_EventType.
+var (
+	Events_EventType_name = map[int32]string{
+		0: "APPLY",
+		1: "REMOVE",
+	}
+	Events_EventType_value = map[string]int32{
+		"APPLY":  0,
+		"REMOVE": 1,
+	}
+)
+
+func (x Events_EventType) Enum() *Events_EventType {
+	p := new(Events_EventType)
+	*p = x
+	return p
+}
+
+func (x Events_EventType) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (Events_EventType) Descriptor() protoreflect.EnumDescriptor {
+	return file_transport_proto_enumTypes[1].Descriptor()
+}
+
+func (Events_EventType) Type() protoreflect.EnumType {
+	return &file_transport_proto_enumTypes[1]
+}
+
+func (x Events_EventType) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use Events_EventType.Descriptor instead.
+func (Events_EventType) EnumDescriptor() ([]byte, []int) {
+	return file_transport_proto_rawDescGZIP(), []int{1, 0}
+}
+
+// Supported objects are IPSet and NetworkPolicy objects.
+type Events_ObjectType int32
+
+const (
+	Events_IPSET  Events_ObjectType = 0
+	Events_POLICY Events_ObjectType = 1
+)
+
+// Enum value maps for Events_ObjectType.
+var (
+	Events_ObjectType_name = map[int32]string{
+		0: "IPSET",
+		1: "POLICY",
+	}
+	Events_ObjectType_value = map[string]int32{
+		"IPSET":  0,
+		"POLICY": 1,
+	}
+)
+
+func (x Events_ObjectType) Enum() *Events_ObjectType {
+	p := new(Events_ObjectType)
+	*p = x
+	return p
+}
+
+func (x Events_ObjectType) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (Events_ObjectType) Descriptor() protoreflect.EnumDescriptor {
+	return file_transport_proto_enumTypes[2].Descriptor()
+}
+
+func (Events_ObjectType) Type() protoreflect.EnumType {
+	return &file_transport_proto_enumTypes[2]
+}
+
+func (x Events_ObjectType) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use Events_ObjectType.Descriptor instead.
+func (Events_ObjectType) EnumDescriptor() ([]byte, []int) {
+	return file_transport_proto_rawDescGZIP(), []int{1, 1}
+}
+
+// DatapathPodMetadata is the metadata for a datapath pod
+type DatapathPodMetadata struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	PodName    string                         `protobuf:"bytes,1,opt,name=pod_name,json=podName,proto3" json:"pod_name,omitempty"`                                    // Daemonset Pod ID
+	NodeName   string                         `protobuf:"bytes,2,opt,name=node_name,json=nodeName,proto3" json:"node_name,omitempty"`                                 // Node name
+	ApiVersion DatapathPodMetadata_APIVersion `protobuf:"varint,3,opt,name=apiVersion,proto3,enum=protos.DatapathPodMetadata_APIVersion" json:"apiVersion,omitempty"` // Controlplane API version to support backwards compatibility
+}
+
+func (x *DatapathPodMetadata) Reset() {
+	*x = DatapathPodMetadata{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_transport_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DatapathPodMetadata) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DatapathPodMetadata) ProtoMessage() {}
+
+func (x *DatapathPodMetadata) ProtoReflect() protoreflect.Message {
+	mi := &file_transport_proto_msgTypes[0]
+	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 DatapathPodMetadata.ProtoReflect.Descriptor instead.
+func (*DatapathPodMetadata) Descriptor() ([]byte, []int) {
+	return file_transport_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *DatapathPodMetadata) GetPodName() string {
+	if x != nil {
+		return x.PodName
+	}
+	return ""
+}
+
+func (x *DatapathPodMetadata) GetNodeName() string {
+	if x != nil {
+		return x.NodeName
+	}
+	return ""
+}
+
+func (x *DatapathPodMetadata) GetApiVersion() DatapathPodMetadata_APIVersion {
+	if x != nil {
+		return x.ApiVersion
+	}
+	return DatapathPodMetadata_V1
+}
+
+// Events defines the operation (event type) and object type being
+// streamed to the datapath client. A events message may carry one or
+// more Event objects.
+type Events struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Type   Events_EventType  `protobuf:"varint,1,opt,name=type,proto3,enum=protos.Events_EventType" json:"type,omitempty"`
+	Object Events_ObjectType `protobuf:"varint,2,opt,name=object,proto3,enum=protos.Events_ObjectType" json:"object,omitempty"`
+	// Payload can contain one or more Event objects.
+	Event []*Event `protobuf:"bytes,3,rep,name=event,proto3" json:"event,omitempty"`
+}
+
+func (x *Events) Reset() {
+	*x = Events{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_transport_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Events) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Events) ProtoMessage() {}
+
+func (x *Events) ProtoReflect() protoreflect.Message {
+	mi := &file_transport_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 Events.ProtoReflect.Descriptor instead.
+func (*Events) Descriptor() ([]byte, []int) {
+	return file_transport_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *Events) GetType() Events_EventType {
+	if x != nil {
+		return x.Type
+	}
+	return Events_APPLY
+}
+
+func (x *Events) GetObject() Events_ObjectType {
+	if x != nil {
+		return x.Object
+	}
+	return Events_IPSET
+}
+
+func (x *Events) GetEvent() []*Event {
+	if x != nil {
+		return x.Event
+	}
+	return nil
+}
+
+// Event is a generic object that can be Created,
+// Updated, Deleted by the controlplane.
+type Event struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Data can contain one or more instances of IPSet or NetworkPolicy
+	// objects.
+	Data []*structpb.Struct `protobuf:"bytes,3,rep,name=data,proto3" json:"data,omitempty"`
+}
+
+func (x *Event) Reset() {
+	*x = Event{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_transport_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Event) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Event) ProtoMessage() {}
+
+func (x *Event) ProtoReflect() protoreflect.Message {
+	mi := &file_transport_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 Event.ProtoReflect.Descriptor instead.
+func (*Event) Descriptor() ([]byte, []int) {
+	return file_transport_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *Event) GetData() []*structpb.Struct {
+	if x != nil {
+		return x.Data
+	}
+	return nil
+}
+
+var File_transport_proto protoreflect.FileDescriptor
+
+var file_transport_proto_rawDesc = []byte{
+	0x0a, 0x0f, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74,
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+	0x1a, 0x0e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x73, 0x2e, 0x45, 0x76, 0x65, 0x6e, 0x74, 0x73,
+	0x30, 0x01, 0x42, 0x43, 0x5a, 0x41, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d,
+	0x2f, 0x41, 0x7a, 0x75, 0x72, 0x65, 0x2f, 0x61, 0x7a, 0x75, 0x72, 0x65, 0x2d, 0x63, 0x6f, 0x6e,
+	0x74, 0x61, 0x69, 0x6e, 0x65, 0x72, 0x2d, 0x6e, 0x65, 0x74, 0x77, 0x6f, 0x72, 0x6b, 0x69, 0x6e,
+	0x67, 0x2f, 0x6e, 0x70, 0x6d, 0x2f, 0x70, 0x6b, 0x67, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x73,
+	0x3b, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x73, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_transport_proto_rawDescOnce sync.Once
+	file_transport_proto_rawDescData = file_transport_proto_rawDesc
+)
+
+func file_transport_proto_rawDescGZIP() []byte {
+	file_transport_proto_rawDescOnce.Do(func() {
+		file_transport_proto_rawDescData = protoimpl.X.CompressGZIP(file_transport_proto_rawDescData)
+	})
+	return file_transport_proto_rawDescData
+}
+
+var file_transport_proto_enumTypes = make([]protoimpl.EnumInfo, 3)
+var file_transport_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
+var file_transport_proto_goTypes = []interface{}{
+	(DatapathPodMetadata_APIVersion)(0), // 0: protos.DatapathPodMetadata.APIVersion
+	(Events_EventType)(0),               // 1: protos.Events.EventType
+	(Events_ObjectType)(0),              // 2: protos.Events.ObjectType
+	(*DatapathPodMetadata)(nil),         // 3: protos.DatapathPodMetadata
+	(*Events)(nil),                      // 4: protos.Events
+	(*Event)(nil),                       // 5: protos.Event
+	(*structpb.Struct)(nil),             // 6: google.protobuf.Struct
+}
+var file_transport_proto_depIdxs = []int32{
+	0, // 0: protos.DatapathPodMetadata.apiVersion:type_name -> protos.DatapathPodMetadata.APIVersion
+	1, // 1: protos.Events.type:type_name -> protos.Events.EventType
+	2, // 2: protos.Events.object:type_name -> protos.Events.ObjectType
+	5, // 3: protos.Events.event:type_name -> protos.Event
+	6, // 4: protos.Event.data:type_name -> google.protobuf.Struct
+	3, // 5: protos.DataplaneEvents.Connect:input_type -> protos.DatapathPodMetadata
+	4, // 6: protos.DataplaneEvents.Connect:output_type -> protos.Events
+	6, // [6:7] is the sub-list for method output_type
+	5, // [5:6] is the sub-list for method input_type
+	5, // [5:5] is the sub-list for extension type_name
+	5, // [5:5] is the sub-list for extension extendee
+	0, // [0:5] is the sub-list for field type_name
+}
+
+func init() { file_transport_proto_init() }
+func file_transport_proto_init() {
+	if File_transport_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_transport_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DatapathPodMetadata); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_transport_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Events); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_transport_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Event); 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{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_transport_proto_rawDesc,
+			NumEnums:      3,
+			NumMessages:   3,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_transport_proto_goTypes,
+		DependencyIndexes: file_transport_proto_depIdxs,
+		EnumInfos:         file_transport_proto_enumTypes,
+		MessageInfos:      file_transport_proto_msgTypes,
+	}.Build()
+	File_transport_proto = out.File
+	file_transport_proto_rawDesc = nil
+	file_transport_proto_goTypes = nil
+	file_transport_proto_depIdxs = nil
+}

npm/pkg/protos/transport.proto

@@ -0,0 +1,51 @@
+syntax = "proto3";
+package protos;
+option go_package = "github.com/Azure/azure-container-networking/npm/pkg/protos;protos";
+
+import "google/protobuf/struct.proto";
+
+// DataplaneEvents represents the Service RPC exposed by the gRPC server.
+service DataplaneEvents{
+	rpc Connect(DatapathPodMetadata) returns (stream Events);
+}
+
+// DatapathPodMetadata is the metadata for a datapath pod
+message DatapathPodMetadata {
+  string pod_name = 1; // Daemonset Pod ID
+  string node_name = 2; // Node name
+  enum APIVersion {
+    V1 = 0;
+  }
+  APIVersion apiVersion = 3; // Controlplane API version to support backwards compatibility
+}
+
+// Events defines the operation (event type) and object type being
+// streamed to the datapath client. A events message may carry one or
+// more Event objects.
+message Events{
+  EventType type = 1;
+  // The following events are supported:
+  enum EventType {
+    // Send a CREATE/UPDATE event to a datapath Pod
+    APPLY = 0;
+    // Send a DELETE event to a datapath Pod
+    REMOVE = 1;
+  }
+
+  ObjectType object = 2;
+  // Supported objects are IPSet and NetworkPolicy objects.
+  enum ObjectType {
+    IPSET = 0;
+    POLICY = 1;
+  }
+  // Payload can contain one or more Event objects.
+  repeated Event event = 3;
+}
+
+// Event is a generic object that can be Created, 
+// Updated, Deleted by the controlplane.
+message Event {
+  // Data can contain one or more instances of IPSet or NetworkPolicy
+  // objects.
+	repeated google.protobuf.Struct data = 3;
+}

npm/pkg/protos/transport_grpc.pb.go

@@ -0,0 +1,128 @@
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+
+package protos
+
+import (
+	context "context"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
+const _ = grpc.SupportPackageIsVersion7
+
+// DataplaneEventsClient is the client API for DataplaneEvents service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type DataplaneEventsClient interface {
+	Connect(ctx context.Context, in *DatapathPodMetadata, opts ...grpc.CallOption) (DataplaneEvents_ConnectClient, error)
+}
+
+type dataplaneEventsClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewDataplaneEventsClient(cc grpc.ClientConnInterface) DataplaneEventsClient {
+	return &dataplaneEventsClient{cc}
+}
+
+func (c *dataplaneEventsClient) Connect(ctx context.Context, in *DatapathPodMetadata, opts ...grpc.CallOption) (DataplaneEvents_ConnectClient, error) {
+	stream, err := c.cc.NewStream(ctx, &DataplaneEvents_ServiceDesc.Streams[0], "/protos.DataplaneEvents/Connect", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &dataplaneEventsConnectClient{stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type DataplaneEvents_ConnectClient interface {
+	Recv() (*Events, error)
+	grpc.ClientStream
+}
+
+type dataplaneEventsConnectClient struct {
+	grpc.ClientStream
+}
+
+func (x *dataplaneEventsConnectClient) Recv() (*Events, error) {
+	m := new(Events)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+// DataplaneEventsServer is the server API for DataplaneEvents service.
+// All implementations must embed UnimplementedDataplaneEventsServer
+// for forward compatibility
+type DataplaneEventsServer interface {
+	Connect(*DatapathPodMetadata, DataplaneEvents_ConnectServer) error
+	mustEmbedUnimplementedDataplaneEventsServer()
+}
+
+// UnimplementedDataplaneEventsServer must be embedded to have forward compatible implementations.
+type UnimplementedDataplaneEventsServer struct {
+}
+
+func (UnimplementedDataplaneEventsServer) Connect(*DatapathPodMetadata, DataplaneEvents_ConnectServer) error {
+	return status.Errorf(codes.Unimplemented, "method Connect not implemented")
+}
+func (UnimplementedDataplaneEventsServer) mustEmbedUnimplementedDataplaneEventsServer() {}
+
+// UnsafeDataplaneEventsServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to DataplaneEventsServer will
+// result in compilation errors.
+type UnsafeDataplaneEventsServer interface {
+	mustEmbedUnimplementedDataplaneEventsServer()
+}
+
+func RegisterDataplaneEventsServer(s grpc.ServiceRegistrar, srv DataplaneEventsServer) {
+	s.RegisterService(&DataplaneEvents_ServiceDesc, srv)
+}
+
+func _DataplaneEvents_Connect_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(DatapathPodMetadata)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(DataplaneEventsServer).Connect(m, &dataplaneEventsConnectServer{stream})
+}
+
+type DataplaneEvents_ConnectServer interface {
+	Send(*Events) error
+	grpc.ServerStream
+}
+
+type dataplaneEventsConnectServer struct {
+	grpc.ServerStream
+}
+
+func (x *dataplaneEventsConnectServer) Send(m *Events) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+// DataplaneEvents_ServiceDesc is the grpc.ServiceDesc for DataplaneEvents service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var DataplaneEvents_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "protos.DataplaneEvents",
+	HandlerType: (*DataplaneEventsServer)(nil),
+	Methods:     []grpc.MethodDesc{},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "Connect",
+			Handler:       _DataplaneEvents_Connect_Handler,
+			ServerStreams: true,
+		},
+	},
+	Metadata: "transport.proto",
+}

npm/pkg/transport/consts.go

@@ -0,0 +1,6 @@
+package transport
+
+const (
+	// concurrentInputRegistrations = 10
+	grpcMaxConcurrentStreams = 100
+)

npm/pkg/transport/controlplane.go

@@ -0,0 +1,157 @@
+package transport
+
+import (
+	"context"
+	"fmt"
+	"net"
+
+	"github.com/Azure/azure-container-networking/npm/pkg/protos"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/reflection"
+	"google.golang.org/grpc/stats"
+	"google.golang.org/protobuf/types/known/structpb"
+	"k8s.io/klog/v2"
+)
+
+type Manager struct {
+	ctx context.Context
+
+	// Server is the gRPC server
+	Server protos.DataplaneEventsServer
+
+	// Watchdog is the watchdog for the gRPC server that implements the
+	// gRPC stats handler interface
+	Watchdog stats.Handler
+
+	// Registrations is a map of dataplane pod address to their associate connection stream
+	Registrations map[string]clientStreamConnection
+
+	// port is the port the manager is listening on
+	port int
+
+	// inCh is the input channel for the manager
+	inCh chan interface{}
+
+	// regCh is the registration channel
+	regCh chan clientStreamConnection
+
+	// deregCh is the deregistration channel
+	deregCh chan deregistrationEvent
+
+	// errCh is the error channel
+	errCh chan error
+}
+
+// New creates a new transport manager
+func NewManager(ctx context.Context, port int) *Manager {
+	// Create a registration channel
+	regCh := make(chan clientStreamConnection, grpcMaxConcurrentStreams)
+
+	// Create a deregistration channel
+	deregCh := make(chan deregistrationEvent, grpcMaxConcurrentStreams)
+
+	return &Manager{
+		ctx:           ctx,
+		Server:        NewServer(ctx, regCh),
+		Watchdog:      NewWatchdog(deregCh),
+		Registrations: make(map[string]clientStreamConnection),
+		port:          port,
+		inCh:          make(chan interface{}),
+		errCh:         make(chan error),
+		deregCh:       deregCh,
+		regCh:         regCh,
+	}
+}
+
+// InputChannel returns the input channel for the manager
+func (m *Manager) InputChannel() chan interface{} {
+	return m.inCh
+}
+
+func (m *Manager) Start() error {
+	klog.Info("Starting transport manager")
+	if err := m.start(); err != nil {
+		klog.Errorf("Failed to Start transport manager: %v", err)
+		return err
+	}
+	return nil
+}
+
+func (m *Manager) start() error {
+	if err := m.handle(); err != nil {
+		return fmt.Errorf("failed to start transport manager handlers: %w", err)
+	}
+
+	for {
+		select {
+		case client := <-m.regCh:
+			klog.Infof("Registering remote client %s", client)
+			m.Registrations[client.String()] = client
+		case ev := <-m.deregCh:
+			klog.Infof("Degregistering remote client %s", ev.remoteAddr)
+			if v, ok := m.Registrations[ev.remoteAddr]; ok {
+				if v.timestamp <= ev.timestamp {
+					delete(m.Registrations, ev.remoteAddr)
+				} else {
+					klog.Info("Ignoring stale deregistration event")
+				}
+			}
+		case msg := <-m.inCh:
+			for _, client := range m.Registrations {
+				if err := client.stream.SendMsg(&protos.Events{
+					Type:   *protos.Events_APPLY.Enum(),
+					Object: *protos.Events_IPSET.Enum(),
+					Event: []*protos.Event{
+						{
+							Data: []*structpb.Struct{
+								msg.(*structpb.Struct),
+							},
+						},
+					},
+				}); err != nil {
+					klog.Errorf("Failed to send message to client %s: %v", client, err)
+				}
+			}
+		case <-m.ctx.Done():
+			klog.Info("Stopping transport manager")
+			return nil
+		case err := <-m.errCh:
+			klog.Errorf("Error in transport manager: %v", err)
+			return err
+		}
+	}
+}
+
+func (m *Manager) handle() error {
+	klog.Info("Starting transport manager listener")
+	lis, err := net.Listen("tcp", fmt.Sprintf("localhost:%d", m.port))
+	if err != nil {
+		return fmt.Errorf("failed to handle server connections: %w", err)
+	}
+
+	var opts []grpc.ServerOption = []grpc.ServerOption{
+		grpc.MaxConcurrentStreams(grpcMaxConcurrentStreams),
+		grpc.StatsHandler(m.Watchdog),
+	}
+
+	server := grpc.NewServer(opts...)
+	protos.RegisterDataplaneEventsServer(
+		server,
+		m.Server,
+	)
+
+	// Register reflection service on gRPC server.
+	// This is useful for debugging and testing with grpcurl and other CLI tools.
+	reflection.Register(server)
+
+	klog.Info("Starting transport manager server")
+
+	// Start gRPC Server in background
+	go func() {
+		if err := server.Serve(lis); err != nil {
+			m.errCh <- fmt.Errorf("failed to start gRPC server: %w", err)
+		}
+	}()
+
+	return nil
+}

npm/pkg/transport/dataplane.go

@@ -0,0 +1,75 @@
+package transport
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/Azure/azure-container-networking/npm/pkg/protos"
+	"google.golang.org/grpc"
+)
+
+// DataplaneEventsClient is a client for the DataplaneEvents service
+type DataplaneEventsClient struct {
+	protos.DataplaneEventsClient
+	pod        string
+	node       string
+	serverAddr string
+}
+
+func NewDataplaneEventsClient(ctx context.Context, pod, node, addr string) (*DataplaneEventsClient, error) {
+	cc, err := grpc.DialContext(ctx, addr, grpc.WithInsecure(), grpc.WithBlock())
+	if err != nil {
+		return nil, fmt.Errorf("failed to dial %s: %w", addr, err)
+	}
+
+	return &DataplaneEventsClient{
+		DataplaneEventsClient: protos.NewDataplaneEventsClient(cc),
+		pod:                   pod,
+		node:                  node,
+		serverAddr:            addr,
+	}, nil
+}
+
+func (c *DataplaneEventsClient) Start(ctx context.Context) error {
+	clientMetadata := &protos.DatapathPodMetadata{
+		PodName:  c.pod,
+		NodeName: c.node,
+	}
+
+	opts := []grpc.CallOption{}
+	connectClient, err := c.Connect(ctx, clientMetadata, opts...)
+	if err != nil {
+		return fmt.Errorf("failed to connect to dataplane events server: %w", err)
+	}
+
+	return c.run(ctx, connectClient)
+}
+
+func (c *DataplaneEventsClient) run(ctx context.Context, connectClient protos.DataplaneEvents_ConnectClient) error {
+	for {
+		select {
+		case <-ctx.Done():
+			return fmt.Errorf("context done: %w", ctx.Err())
+		default:
+			event, err := connectClient.Recv()
+			if err != nil {
+				break
+			}
+
+			// TODO: REMOVE ME
+			// This is for debugging purposes only
+			fmt.Printf(
+				"Received event type %s object type %s: \n",
+				event.GetType(),
+				event.GetObject(),
+			)
+
+			for _, e := range event.GetEvent() {
+				for _, d := range e.GetData() {
+					eventAsMap := d.AsMap()
+					fmt.Printf("%s: %s\n", eventAsMap["Type"], eventAsMap["Payload"])
+				}
+			}
+		}
+	}
+}

npm/pkg/transport/errors.go

@@ -0,0 +1,6 @@
+package transport
+
+import "errors"
+
+// ErrNoPeer is returned when no peer was found in the gRPC context.
+var ErrNoPeer = errors.New("no peer found in gRPC context")

npm/pkg/transport/server.go

@@ -0,0 +1,60 @@
+package transport
+
+import (
+	"context"
+	"time"
+
+	"github.com/Azure/azure-container-networking/npm/pkg/protos"
+	"google.golang.org/grpc/peer"
+)
+
+// clientStreamConnection represents a client stream connection
+type clientStreamConnection struct {
+	stream protos.DataplaneEvents_ConnectServer
+	*protos.DatapathPodMetadata
+	addr      string
+	timestamp int64
+}
+
+// String returns the address of the client
+func (c clientStreamConnection) String() string {
+	return c.addr
+}
+
+// DataplaneEventsServer is the gRPC server for the DataplaneEvents service
+type DataplaneEventsServer struct {
+	protos.UnimplementedDataplaneEventsServer
+	ctx   context.Context
+	regCh chan<- clientStreamConnection
+}
+
+// NewServer creates a new DataplaneEventsServer instance
+func NewServer(ctx context.Context, ch chan clientStreamConnection) *DataplaneEventsServer {
+	return &DataplaneEventsServer{
+		ctx:   ctx,
+		regCh: ch,
+	}
+}
+
+// Connect is called when a client connects to the server
+func (d *DataplaneEventsServer) Connect(m *protos.DatapathPodMetadata, stream protos.DataplaneEvents_ConnectServer) error {
+	p, ok := peer.FromContext(stream.Context())
+	if !ok {
+		return ErrNoPeer
+	}
+
+	conn := clientStreamConnection{
+		DatapathPodMetadata: m,
+		stream:              stream,
+		addr:                p.Addr.String(),
+		timestamp:           time.Now().Unix(),
+	}
+
+	// Add stream to the list of active streams
+	d.regCh <- conn
+
+	// This should block until the client disconnects
+	<-d.ctx.Done()
+
+	return nil
+}

npm/pkg/transport/test/client/main.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"context"
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/Azure/azure-container-networking/npm/pkg/transport"
+)
+
+func main() {
+	ctx := context.Background()
+	ctx, cancel := context.WithCancel(ctx)
+
+	sigs := make(chan os.Signal, 1)
+	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
+
+	go func() {
+		<-sigs
+		cancel()
+	}()
+
+	c, err := transport.NewDataplaneEventsClient(ctx, "podname", "nodename", "127.0.0.1:8080")
+	if err != nil {
+		log.Fatal(err)
+	}
+	if err := c.Start(ctx); err != nil {
+		log.Fatal(err)
+	}
+}

npm/pkg/transport/test/server/main.go

@@ -0,0 +1,68 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"math/rand"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"github.com/Azure/azure-container-networking/npm/pkg/transport"
+	"github.com/fatih/structs"
+	"google.golang.org/protobuf/types/known/structpb"
+)
+
+const (
+	port = 8080
+)
+
+func main() {
+	ctx := context.Background()
+	ctx, cancel := context.WithCancel(ctx)
+
+	sigs := make(chan os.Signal, 1)
+	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
+
+	go func() {
+		<-sigs
+		cancel()
+	}()
+
+	m := transport.NewManager(ctx, port)
+
+	ch := m.InputChannel()
+
+	go func() {
+		for _, d := range testData() {
+			ch <- d
+			//nolint:gomnd //ignore for test
+			time.Sleep(time.Second * 5)
+		}
+	}()
+
+	if err := m.Start(); err != nil {
+		panic(err)
+	}
+}
+
+func testData() []*structpb.Struct {
+	var output []*structpb.Struct
+	for i := 0; i < 10; i++ {
+		v := struct {
+			Type    string
+			Payload string
+		}{
+			Type: fmt.Sprintf("IPSET-%d", i),
+			//nolint:gosec //ignore for test
+			Payload: fmt.Sprintf("172.17.0.%d/%d", i, rand.Uint32()%32), //nolint:gomnd //ignore for test
+		}
+
+		m := structs.Map(v)
+
+		data, _ := structpb.NewStruct(m)
+		output = append(output, data)
+	}
+	return output
+}

npm/pkg/transport/watchdog.go

@@ -0,0 +1,64 @@
+package transport
+
+import (
+	"context"
+	"time"
+
+	"google.golang.org/grpc/stats"
+)
+
+// Defined type for context key
+type watchdogContextKey string
+
+// String implements the Stringer interface
+func (c watchdogContextKey) String() string {
+	return string(c)
+}
+
+// contextRemoteAddrKey is the key used to store the remote address in the context
+var contextRemoteAddrKey = watchdogContextKey("remote-addr")
+
+// deregistrationEvent is the type of event that is sent to the deregistration channel
+type deregistrationEvent struct {
+	remoteAddr string
+	timestamp  int64
+}
+
+// Watchdog is a stats handler that watches for connection and RPC events.
+// It implements the gRPC stats.Handler interface.
+type Watchdog struct {
+	// deregCh is used by the Watchdog to signal the Watchdog to deregister a remote address/client
+	deregCh chan<- deregistrationEvent
+}
+
+// NewWatchdog creates a new Watchdog instance
+func NewWatchdog(deregCh chan<- deregistrationEvent) stats.Handler {
+	return &Watchdog{
+		deregCh: deregCh,
+	}
+}
+
+func (h *Watchdog) TagRPC(ctx context.Context, _ *stats.RPCTagInfo) context.Context {
+	return ctx
+}
+
+func (h *Watchdog) HandleRPC(ctx context.Context, _ stats.RPCStats) {
+	_ = ctx
+}
+
+func (h *Watchdog) TagConn(ctx context.Context, info *stats.ConnTagInfo) context.Context {
+	// Add the remote address to the context so that we can use it during a connection end event
+	return context.WithValue(ctx, contextRemoteAddrKey, info.RemoteAddr.String())
+}
+
+// HandleConn processes the Conn stats.
+func (h *Watchdog) HandleConn(c context.Context, s stats.ConnStats) {
+	if _, ok := s.(*stats.ConnEnd); ok {
+		// Watch for connection end events
+		remoteAddr := c.Value(contextRemoteAddrKey).(string)
+		h.deregCh <- deregistrationEvent{
+			remoteAddr: remoteAddr,
+			timestamp:  time.Now().Unix(),
+		}
+	}
+}

scripts/install-protoc.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+
+PROTOBUFF_VERSION=3.19.1
+PB_REL="https://github.com/protocolbuffers/protobuf/releases"
+PROTOC_ZIP_NAME=protoc-${PROTOBUFF_VERSION}-linux-x86_64.zip
+PROTOC_INSTALL_PATH=$HOME/.local
+
+# install unzip on linux if not installed
+if [[ "$OSTYPE" == "linux-gnu" ]]; then
+	if ! type "unzip" > /dev/null; then
+		sudo apt-get install unzip
+	fi
+fi
+
+# install protoc and protoc-gen-go
+if [ ! -f ${PROTOC_INSTALL_PATH}/bin/protoc ]; then
+    echo "Installing protobuf compiler"
+		curl -LO ${PB_REL}/download/v${PROTOBUFF_VERSION}/${PROTOC_ZIP_NAME}
+		echo "Unzipping protoc"
+		unzip -o ${PROTOC_ZIP_NAME} -d ${PROTOC_INSTALL_PATH}
+		chmod +x ${PROTOC_INSTALL_PATH}/bin/protoc 
+		export PATH=${PROTOC_INSTALL_PATH}/bin:$PATH
+		echo "Removing protoc zip"
+		rm ${PROTOC_ZIP_NAME}
+else
+	echo "Protobuf compiler already installed at ${PROTOC_INSTALL_PATH}/bin/protoc"
+	echo "Add protoc to your PATH if you want to use it from anywhere else using the following command:"
+	export PATH=${PROTOC_INSTALL_PATH}/bin:$PATH
+fi
+
+# install protoc-gen-go
+if [ ! -f ${GOPATH}/bin/protoc-gen-go ]; then
+	echo "Installing protoc-gen-go"
+	go install github.com/golang/protobuf/protoc-gen-go@v1.26
+else
+	echo "protoc-gen-go already installed at ${GOPATH}/bin/protoc-gen-go"
+fi
+
+# install protoc-gen-go-grpc
+if [ ! -f ${GOPATH}/bin/protoc-gen-go-grpc ]; then
+	echo "Installing protoc-gen-go-grpc"
+	go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.1
+else
+	echo "protoc-gen-go-grpc already installed at ${GOPATH}/bin/protoc-gen-go-grpc"
+fi

vendor/github.com/fatih/structs/.gitignore

@@ -0,0 +1,23 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+*.test

vendor/github.com/fatih/structs/.travis.yml

@@ -0,0 +1,13 @@
+language: go
+go: 
+ - 1.7.x
+ - 1.8.x
+ - 1.9.x
+ - tip
+sudo: false
+before_install:
+- go get github.com/axw/gocov/gocov
+- go get github.com/mattn/goveralls
+- if ! go get github.com/golang/tools/cmd/cover; then go get golang.org/x/tools/cmd/cover; fi
+script:
+- $HOME/gopath/bin/goveralls -service=travis-ci

vendor/github.com/fatih/structs/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Fatih Arslan
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

vendor/github.com/fatih/structs/README.md

@@ -0,0 +1,163 @@
+# Structs [![GoDoc](http://img.shields.io/badge/go-documentation-blue.svg?style=flat-square)](http://godoc.org/github.com/fatih/structs) [![Build Status](http://img.shields.io/travis/fatih/structs.svg?style=flat-square)](https://travis-ci.org/fatih/structs) [![Coverage Status](http://img.shields.io/coveralls/fatih/structs.svg?style=flat-square)](https://coveralls.io/r/fatih/structs)
+
+Structs contains various utilities to work with Go (Golang) structs. It was
+initially used by me to convert a struct into a `map[string]interface{}`. With
+time I've added other utilities for structs.  It's basically a high level
+package based on primitives from the reflect package. Feel free to add new
+functions or improve the existing code.
+
+## Install
+
+```bash
+go get github.com/fatih/structs
+```
+
+## Usage and Examples
+
+Just like the standard lib `strings`, `bytes` and co packages, `structs` has
+many global functions to manipulate or organize your struct data. Lets define
+and declare a struct:
+
+```go
+type Server struct {
+	Name        string `json:"name,omitempty"`
+	ID          int
+	Enabled     bool
+	users       []string // not exported
+	http.Server          // embedded
+}
+
+server := &Server{
+	Name:    "gopher",
+	ID:      123456,
+	Enabled: true,
+}
+```
+
+```go
+// Convert a struct to a map[string]interface{}
+// => {"Name":"gopher", "ID":123456, "Enabled":true}
+m := structs.Map(server)
+
+// Convert the values of a struct to a []interface{}
+// => ["gopher", 123456, true]
+v := structs.Values(server)
+
+// Convert the names of a struct to a []string
+// (see "Names methods" for more info about fields)
+n := structs.Names(server)
+
+// Convert the values of a struct to a []*Field
+// (see "Field methods" for more info about fields)
+f := structs.Fields(server)
+
+// Return the struct name => "Server"
+n := structs.Name(server)
+
+// Check if any field of a struct is initialized or not.
+h := structs.HasZero(server)
+
+// Check if all fields of a struct is initialized or not.
+z := structs.IsZero(server)
+
+// Check if server is a struct or a pointer to struct
+i := structs.IsStruct(server)
+```
+
+### Struct methods
+
+The structs functions can be also used as independent methods by creating a new
+`*structs.Struct`. This is handy if you want to have more control over the
+structs (such as retrieving a single Field).
+
+```go
+// Create a new struct type:
+s := structs.New(server)
+
+m := s.Map()              // Get a map[string]interface{}
+v := s.Values()           // Get a []interface{}
+f := s.Fields()           // Get a []*Field
+n := s.Names()            // Get a []string
+f := s.Field(name)        // Get a *Field based on the given field name
+f, ok := s.FieldOk(name)  // Get a *Field based on the given field name
+n := s.Name()             // Get the struct name
+h := s.HasZero()          // Check if any field is uninitialized
+z := s.IsZero()           // Check if all fields are uninitialized
+```
+
+### Field methods
+
+We can easily examine a single Field for more detail. Below you can see how we
+get and interact with various field methods:
+
+
+```go
+s := structs.New(server)
+
+// Get the Field struct for the "Name" field
+name := s.Field("Name")
+
+// Get the underlying value,  value => "gopher"
+value := name.Value().(string)
+
+// Set the field's value
+name.Set("another gopher")
+
+// Get the field's kind, kind =>  "string"
+name.Kind()
+
+// Check if the field is exported or not
+if name.IsExported() {
+	fmt.Println("Name field is exported")
+}
+
+// Check if the value is a zero value, such as "" for string, 0 for int
+if !name.IsZero() {
+	fmt.Println("Name is initialized")
+}
+
+// Check if the field is an anonymous (embedded) field
+if !name.IsEmbedded() {
+	fmt.Println("Name is not an embedded field")
+}
+
+// Get the Field's tag value for tag name "json", tag value => "name,omitempty"
+tagValue := name.Tag("json")
+```
+
+Nested structs are supported too:
+
+```go
+addrField := s.Field("Server").Field("Addr")
+
+// Get the value for addr
+a := addrField.Value().(string)
+
+// Or get all fields
+httpServer := s.Field("Server").Fields()
+```
+
+We can also get a slice of Fields from the Struct type to iterate over all
+fields. This is handy if you wish to examine all fields:
+
+```go
+s := structs.New(server)
+
+for _, f := range s.Fields() {
+	fmt.Printf("field name: %+v\n", f.Name())
+
+	if f.IsExported() {
+		fmt.Printf("value   : %+v\n", f.Value())
+		fmt.Printf("is zero : %+v\n", f.IsZero())
+	}
+}
+```
+
+## Credits
+
+ * [Fatih Arslan](https://github.com/fatih)
+ * [Cihangir Savas](https://github.com/cihangir)
+
+## License
+
+The MIT License (MIT) - see LICENSE.md for more details

vendor/github.com/fatih/structs/field.go

@@ -0,0 +1,141 @@
+package structs
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+)
+
+var (
+	errNotExported = errors.New("field is not exported")
+	errNotSettable = errors.New("field is not settable")
+)
+
+// Field represents a single struct field that encapsulates high level
+// functions around the field.
+type Field struct {
+	value      reflect.Value
+	field      reflect.StructField
+	defaultTag string
+}
+
+// Tag returns the value associated with key in the tag string. If there is no
+// such key in the tag, Tag returns the empty string.
+func (f *Field) Tag(key string) string {
+	return f.field.Tag.Get(key)
+}
+
+// Value returns the underlying value of the field. It panics if the field
+// is not exported.
+func (f *Field) Value() interface{} {
+	return f.value.Interface()
+}
+
+// IsEmbedded returns true if the given field is an anonymous field (embedded)
+func (f *Field) IsEmbedded() bool {
+	return f.field.Anonymous
+}
+
+// IsExported returns true if the given field is exported.
+func (f *Field) IsExported() bool {
+	return f.field.PkgPath == ""
+}
+
+// IsZero returns true if the given field is not initialized (has a zero value).
+// It panics if the field is not exported.
+func (f *Field) IsZero() bool {
+	zero := reflect.Zero(f.value.Type()).Interface()
+	current := f.Value()
+
+	return reflect.DeepEqual(current, zero)
+}
+
+// Name returns the name of the given field
+func (f *Field) Name() string {
+	return f.field.Name
+}
+
+// Kind returns the fields kind, such as "string", "map", "bool", etc ..
+func (f *Field) Kind() reflect.Kind {
+	return f.value.Kind()
+}
+
+// Set sets the field to given value v. It returns an error if the field is not
+// settable (not addressable or not exported) or if the given value's type
+// doesn't match the fields type.
+func (f *Field) Set(val interface{}) error {
+	// we can't set unexported fields, so be sure this field is exported
+	if !f.IsExported() {
+		return errNotExported
+	}
+
+	// do we get here? not sure...
+	if !f.value.CanSet() {
+		return errNotSettable
+	}
+
+	given := reflect.ValueOf(val)
+
+	if f.value.Kind() != given.Kind() {
+		return fmt.Errorf("wrong kind. got: %s want: %s", given.Kind(), f.value.Kind())
+	}
+
+	f.value.Set(given)
+	return nil
+}
+
+// Zero sets the field to its zero value. It returns an error if the field is not
+// settable (not addressable or not exported).
+func (f *Field) Zero() error {
+	zero := reflect.Zero(f.value.Type()).Interface()
+	return f.Set(zero)
+}
+
+// Fields returns a slice of Fields. This is particular handy to get the fields
+// of a nested struct . A struct tag with the content of "-" ignores the
+// checking of that particular field. Example:
+//
+//   // Field is ignored by this package.
+//   Field *http.Request `structs:"-"`
+//
+// It panics if field is not exported or if field's kind is not struct
+func (f *Field) Fields() []*Field {
+	return getFields(f.value, f.defaultTag)
+}
+
+// Field returns the field from a nested struct. It panics if the nested struct
+// is not exported or if the field was not found.
+func (f *Field) Field(name string) *Field {
+	field, ok := f.FieldOk(name)
+	if !ok {
+		panic("field not found")
+	}
+
+	return field
+}
+
+// FieldOk returns the field from a nested struct. The boolean returns whether
+// the field was found (true) or not (false).
+func (f *Field) FieldOk(name string) (*Field, bool) {
+	value := &f.value
+	// value must be settable so we need to make sure it holds the address of the
+	// variable and not a copy, so we can pass the pointer to strctVal instead of a
+	// copy (which is not assigned to any variable, hence not settable).
+	// see "https://blog.golang.org/laws-of-reflection#TOC_8."
+	if f.value.Kind() != reflect.Ptr {
+		a := f.value.Addr()
+		value = &a
+	}
+	v := strctVal(value.Interface())
+	t := v.Type()
+
+	field, ok := t.FieldByName(name)
+	if !ok {
+		return nil, false
+	}
+
+	return &Field{
+		field: field,
+		value: v.FieldByName(name),
+	}, true
+}

vendor/github.com/fatih/structs/structs.go

@@ -0,0 +1,584 @@
+// Package structs contains various utilities functions to work with structs.
+package structs
+
+import (
+	"fmt"
+
+	"reflect"
+)
+
+var (
+	// DefaultTagName is the default tag name for struct fields which provides
+	// a more granular to tweak certain structs. Lookup the necessary functions
+	// for more info.
+	DefaultTagName = "structs" // struct's field default tag name
+)
+
+// Struct encapsulates a struct type to provide several high level functions
+// around the struct.
+type Struct struct {
+	raw     interface{}
+	value   reflect.Value
+	TagName string
+}
+
+// New returns a new *Struct with the struct s. It panics if the s's kind is
+// not struct.
+func New(s interface{}) *Struct {
+	return &Struct{
+		raw:     s,
+		value:   strctVal(s),
+		TagName: DefaultTagName,
+	}
+}
+
+// Map converts the given struct to a map[string]interface{}, where the keys
+// of the map are the field names and the values of the map the associated
+// values of the fields. The default key string is the struct field name but
+// can be changed in the struct field's tag value. The "structs" key in the
+// struct's field tag value is the key name. Example:
+//
+//   // Field appears in map as key "myName".
+//   Name string `structs:"myName"`
+//
+// A tag value with the content of "-" ignores that particular field. Example:
+//
+//   // Field is ignored by this package.
+//   Field bool `structs:"-"`
+//
+// A tag value with the content of "string" uses the stringer to get the value. Example:
+//
+//   // The value will be output of Animal's String() func.
+//   // Map will panic if Animal does not implement String().
+//   Field *Animal `structs:"field,string"`
+//
+// A tag value with the option of "flatten" used in a struct field is to flatten its fields
+// in the output map. Example:
+//
+//   // The FieldStruct's fields will be flattened into the output map.
+//   FieldStruct time.Time `structs:",flatten"`
+//
+// A tag value with the option of "omitnested" stops iterating further if the type
+// is a struct. Example:
+//
+//   // Field is not processed further by this package.
+//   Field time.Time     `structs:"myName,omitnested"`
+//   Field *http.Request `structs:",omitnested"`
+//
+// A tag value with the option of "omitempty" ignores that particular field if
+// the field value is empty. Example:
+//
+//   // Field appears in map as key "myName", but the field is
+//   // skipped if empty.
+//   Field string `structs:"myName,omitempty"`
+//
+//   // Field appears in map as key "Field" (the default), but
+//   // the field is skipped if empty.
+//   Field string `structs:",omitempty"`
+//
+// Note that only exported fields of a struct can be accessed, non exported
+// fields will be neglected.
+func (s *Struct) Map() map[string]interface{} {
+	out := make(map[string]interface{})
+	s.FillMap(out)
+	return out
+}
+
+// FillMap is the same as Map. Instead of returning the output, it fills the
+// given map.
+func (s *Struct) FillMap(out map[string]interface{}) {
+	if out == nil {
+		return
+	}
+
+	fields := s.structFields()
+
+	for _, field := range fields {
+		name := field.Name
+		val := s.value.FieldByName(name)
+		isSubStruct := false
+		var finalVal interface{}
+
+		tagName, tagOpts := parseTag(field.Tag.Get(s.TagName))
+		if tagName != "" {
+			name = tagName
+		}
+
+		// if the value is a zero value and the field is marked as omitempty do
+		// not include
+		if tagOpts.Has("omitempty") {
+			zero := reflect.Zero(val.Type()).Interface()
+			current := val.Interface()
+
+			if reflect.DeepEqual(current, zero) {
+				continue
+			}
+		}
+
+		if !tagOpts.Has("omitnested") {
+			finalVal = s.nested(val)
+
+			v := reflect.ValueOf(val.Interface())
+			if v.Kind() == reflect.Ptr {
+				v = v.Elem()
+			}
+
+			switch v.Kind() {
+			case reflect.Map, reflect.Struct:
+				isSubStruct = true
+			}
+		} else {
+			finalVal = val.Interface()
+		}
+
+		if tagOpts.Has("string") {
+			s, ok := val.Interface().(fmt.Stringer)
+			if ok {
+				out[name] = s.String()
+			}
+			continue
+		}
+
+		if isSubStruct && (tagOpts.Has("flatten")) {
+			for k := range finalVal.(map[string]interface{}) {
+				out[k] = finalVal.(map[string]interface{})[k]
+			}
+		} else {
+			out[name] = finalVal
+		}
+	}
+}
+
+// Values converts the given s struct's field values to a []interface{}.  A
+// struct tag with the content of "-" ignores the that particular field.
+// Example:
+//
+//   // Field is ignored by this package.
+//   Field int `structs:"-"`
+//
+// A value with the option of "omitnested" stops iterating further if the type
+// is a struct. Example:
+//
+//   // Fields is not processed further by this package.
+//   Field time.Time     `structs:",omitnested"`
+//   Field *http.Request `structs:",omitnested"`
+//
+// A tag value with the option of "omitempty" ignores that particular field and
+// is not added to the values if the field value is empty. Example:
+//
+//   // Field is skipped if empty
+//   Field string `structs:",omitempty"`
+//
+// Note that only exported fields of a struct can be accessed, non exported
+// fields  will be neglected.
+func (s *Struct) Values() []interface{} {
+	fields := s.structFields()
+
+	var t []interface{}
+
+	for _, field := range fields {
+		val := s.value.FieldByName(field.Name)
+
+		_, tagOpts := parseTag(field.Tag.Get(s.TagName))
+
+		// if the value is a zero value and the field is marked as omitempty do
+		// not include
+		if tagOpts.Has("omitempty") {
+			zero := reflect.Zero(val.Type()).Interface()
+			current := val.Interface()
+
+			if reflect.DeepEqual(current, zero) {
+				continue
+			}
+		}
+
+		if tagOpts.Has("string") {
+			s, ok := val.Interface().(fmt.Stringer)
+			if ok {
+				t = append(t, s.String())
+			}
+			continue
+		}
+
+		if IsStruct(val.Interface()) && !tagOpts.Has("omitnested") {
+			// look out for embedded structs, and convert them to a
+			// []interface{} to be added to the final values slice
+			t = append(t, Values(val.Interface())...)
+		} else {
+			t = append(t, val.Interface())
+		}
+	}
+
+	return t
+}
+
+// Fields returns a slice of Fields. A struct tag with the content of "-"
+// ignores the checking of that particular field. Example:
+//
+//   // Field is ignored by this package.
+//   Field bool `structs:"-"`
+//
+// It panics if s's kind is not struct.
+func (s *Struct) Fields() []*Field {
+	return getFields(s.value, s.TagName)
+}
+
+// Names returns a slice of field names. A struct tag with the content of "-"
+// ignores the checking of that particular field. Example:
+//
+//   // Field is ignored by this package.
+//   Field bool `structs:"-"`
+//
+// It panics if s's kind is not struct.
+func (s *Struct) Names() []string {
+	fields := getFields(s.value, s.TagName)
+
+	names := make([]string, len(fields))
+
+	for i, field := range fields {
+		names[i] = field.Name()
+	}
+
+	return names
+}
+
+func getFields(v reflect.Value, tagName string) []*Field {
+	if v.Kind() == reflect.Ptr {
+		v = v.Elem()
+	}
+
+	t := v.Type()
+
+	var fields []*Field
+
+	for i := 0; i < t.NumField(); i++ {
+		field := t.Field(i)
+
+		if tag := field.Tag.Get(tagName); tag == "-" {
+			continue
+		}
+
+		f := &Field{
+			field: field,
+			value: v.FieldByName(field.Name),
+		}
+
+		fields = append(fields, f)
+
+	}
+
+	return fields
+}
+
+// Field returns a new Field struct that provides several high level functions
+// around a single struct field entity. It panics if the field is not found.
+func (s *Struct) Field(name string) *Field {
+	f, ok := s.FieldOk(name)
+	if !ok {
+		panic("field not found")
+	}
+
+	return f
+}
+
+// FieldOk returns a new Field struct that provides several high level functions
+// around a single struct field entity. The boolean returns true if the field
+// was found.
+func (s *Struct) FieldOk(name string) (*Field, bool) {
+	t := s.value.Type()
+
+	field, ok := t.FieldByName(name)
+	if !ok {
+		return nil, false
+	}
+
+	return &Field{
+		field:      field,
+		value:      s.value.FieldByName(name),
+		defaultTag: s.TagName,
+	}, true
+}
+
+// IsZero returns true if all fields in a struct is a zero value (not
+// initialized) A struct tag with the content of "-" ignores the checking of
+// that particular field. Example:
+//
+//   // Field is ignored by this package.
+//   Field bool `structs:"-"`
+//
+// A value with the option of "omitnested" stops iterating further if the type
+// is a struct. Example:
+//
+//   // Field is not processed further by this package.
+//   Field time.Time     `structs:"myName,omitnested"`
+//   Field *http.Request `structs:",omitnested"`
+//
+// Note that only exported fields of a struct can be accessed, non exported
+// fields  will be neglected. It panics if s's kind is not struct.
+func (s *Struct) IsZero() bool {
+	fields := s.structFields()
+
+	for _, field := range fields {
+		val := s.value.FieldByName(field.Name)
+
+		_, tagOpts := parseTag(field.Tag.Get(s.TagName))
+
+		if IsStruct(val.Interface()) && !tagOpts.Has("omitnested") {
+			ok := IsZero(val.Interface())
+			if !ok {
+				return false
+			}
+
+			continue
+		}
+
+		// zero value of the given field, such as "" for string, 0 for int
+		zero := reflect.Zero(val.Type()).Interface()
+
+		//  current value of the given field
+		current := val.Interface()
+
+		if !reflect.DeepEqual(current, zero) {
+			return false
+		}
+	}
+
+	return true
+}
+
+// HasZero returns true if a field in a struct is not initialized (zero value).
+// A struct tag with the content of "-" ignores the checking of that particular
+// field. Example:
+//
+//   // Field is ignored by this package.
+//   Field bool `structs:"-"`
+//
+// A value with the option of "omitnested" stops iterating further if the type
+// is a struct. Example:
+//
+//   // Field is not processed further by this package.
+//   Field time.Time     `structs:"myName,omitnested"`
+//   Field *http.Request `structs:",omitnested"`
+//
+// Note that only exported fields of a struct can be accessed, non exported
+// fields  will be neglected. It panics if s's kind is not struct.
+func (s *Struct) HasZero() bool {
+	fields := s.structFields()
+
+	for _, field := range fields {
+		val := s.value.FieldByName(field.Name)
+
+		_, tagOpts := parseTag(field.Tag.Get(s.TagName))
+
+		if IsStruct(val.Interface()) && !tagOpts.Has("omitnested") {
+			ok := HasZero(val.Interface())
+			if ok {
+				return true
+			}
+
+			continue
+		}
+
+		// zero value of the given field, such as "" for string, 0 for int
+		zero := reflect.Zero(val.Type()).Interface()
+
+		//  current value of the given field
+		current := val.Interface()
+
+		if reflect.DeepEqual(current, zero) {
+			return true
+		}
+	}
+
+	return false
+}
+
+// Name returns the structs's type name within its package. For more info refer
+// to Name() function.
+func (s *Struct) Name() string {
+	return s.value.Type().Name()
+}
+
+// structFields returns the exported struct fields for a given s struct. This
+// is a convenient helper method to avoid duplicate code in some of the
+// functions.
+func (s *Struct) structFields() []reflect.StructField {
+	t := s.value.Type()
+
+	var f []reflect.StructField
+
+	for i := 0; i < t.NumField(); i++ {
+		field := t.Field(i)
+		// we can't access the value of unexported fields
+		if field.PkgPath != "" {
+			continue
+		}
+
+		// don't check if it's omitted
+		if tag := field.Tag.Get(s.TagName); tag == "-" {
+			continue
+		}
+
+		f = append(f, field)
+	}
+
+	return f
+}
+
+func strctVal(s interface{}) reflect.Value {
+	v := reflect.ValueOf(s)
+
+	// if pointer get the underlying element≤
+	for v.Kind() == reflect.Ptr {
+		v = v.Elem()
+	}
+
+	if v.Kind() != reflect.Struct {
+		panic("not struct")
+	}
+
+	return v
+}
+
+// Map converts the given struct to a map[string]interface{}. For more info
+// refer to Struct types Map() method. It panics if s's kind is not struct.
+func Map(s interface{}) map[string]interface{} {
+	return New(s).Map()
+}
+
+// FillMap is the same as Map. Instead of returning the output, it fills the
+// given map.
+func FillMap(s interface{}, out map[string]interface{}) {
+	New(s).FillMap(out)
+}
+
+// Values converts the given struct to a []interface{}. For more info refer to
+// Struct types Values() method.  It panics if s's kind is not struct.
+func Values(s interface{}) []interface{} {
+	return New(s).Values()
+}
+
+// Fields returns a slice of *Field. For more info refer to Struct types
+// Fields() method.  It panics if s's kind is not struct.
+func Fields(s interface{}) []*Field {
+	return New(s).Fields()
+}
+
+// Names returns a slice of field names. For more info refer to Struct types
+// Names() method.  It panics if s's kind is not struct.
+func Names(s interface{}) []string {
+	return New(s).Names()
+}
+
+// IsZero returns true if all fields is equal to a zero value. For more info
+// refer to Struct types IsZero() method.  It panics if s's kind is not struct.
+func IsZero(s interface{}) bool {
+	return New(s).IsZero()
+}
+
+// HasZero returns true if any field is equal to a zero value. For more info
+// refer to Struct types HasZero() method.  It panics if s's kind is not struct.
+func HasZero(s interface{}) bool {
+	return New(s).HasZero()
+}
+
+// IsStruct returns true if the given variable is a struct or a pointer to
+// struct.
+func IsStruct(s interface{}) bool {
+	v := reflect.ValueOf(s)
+	if v.Kind() == reflect.Ptr {
+		v = v.Elem()
+	}
+
+	// uninitialized zero value of a struct
+	if v.Kind() == reflect.Invalid {
+		return false
+	}
+
+	return v.Kind() == reflect.Struct
+}
+
+// Name returns the structs's type name within its package. It returns an
+// empty string for unnamed types. It panics if s's kind is not struct.
+func Name(s interface{}) string {
+	return New(s).Name()
+}
+
+// nested retrieves recursively all types for the given value and returns the
+// nested value.
+func (s *Struct) nested(val reflect.Value) interface{} {
+	var finalVal interface{}
+
+	v := reflect.ValueOf(val.Interface())
+	if v.Kind() == reflect.Ptr {
+		v = v.Elem()
+	}
+
+	switch v.Kind() {
+	case reflect.Struct:
+		n := New(val.Interface())
+		n.TagName = s.TagName
+		m := n.Map()
+
+		// do not add the converted value if there are no exported fields, ie:
+		// time.Time
+		if len(m) == 0 {
+			finalVal = val.Interface()
+		} else {
+			finalVal = m
+		}
+	case reflect.Map:
+		// get the element type of the map
+		mapElem := val.Type()
+		switch val.Type().Kind() {
+		case reflect.Ptr, reflect.Array, reflect.Map,
+			reflect.Slice, reflect.Chan:
+			mapElem = val.Type().Elem()
+			if mapElem.Kind() == reflect.Ptr {
+				mapElem = mapElem.Elem()
+			}
+		}
+
+		// only iterate over struct types, ie: map[string]StructType,
+		// map[string][]StructType,
+		if mapElem.Kind() == reflect.Struct ||
+			(mapElem.Kind() == reflect.Slice &&
+				mapElem.Elem().Kind() == reflect.Struct) {
+			m := make(map[string]interface{}, val.Len())
+			for _, k := range val.MapKeys() {
+				m[k.String()] = s.nested(val.MapIndex(k))
+			}
+			finalVal = m
+			break
+		}
+
+		// TODO(arslan): should this be optional?
+		finalVal = val.Interface()
+	case reflect.Slice, reflect.Array:
+		if val.Type().Kind() == reflect.Interface {
+			finalVal = val.Interface()
+			break
+		}
+
+		// TODO(arslan): should this be optional?
+		// do not iterate of non struct types, just pass the value. Ie: []int,
+		// []string, co... We only iterate further if it's a struct.
+		// i.e []foo or []*foo
+		if val.Type().Elem().Kind() != reflect.Struct &&
+			!(val.Type().Elem().Kind() == reflect.Ptr &&
+				val.Type().Elem().Elem().Kind() == reflect.Struct) {
+			finalVal = val.Interface()
+			break
+		}
+
+		slices := make([]interface{}, val.Len())
+		for x := 0; x < val.Len(); x++ {
+			slices[x] = s.nested(val.Index(x))
+		}
+		finalVal = slices
+	default:
+		finalVal = val.Interface()
+	}
+
+	return finalVal
+}

vendor/github.com/fatih/structs/tags.go

@@ -0,0 +1,32 @@
+package structs
+
+import "strings"
+
+// tagOptions contains a slice of tag options
+type tagOptions []string
+
+// Has returns true if the given option is available in tagOptions
+func (t tagOptions) Has(opt string) bool {
+	for _, tagOpt := range t {
+		if tagOpt == opt {
+			return true
+		}
+	}
+
+	return false
+}
+
+// parseTag splits a struct field's tag into its name and a list of options
+// which comes after a name. A tag is in the form of: "name,option1,option2".
+// The name can be neglectected.
+func parseTag(tag string) (string, tagOptions) {
+	// tag is one of followings:
+	// ""
+	// "name"
+	// "name,opt"
+	// "name,opt,opt2"
+	// ",opt"
+
+	res := strings.Split(tag, ",")
+	return res[0], res[1:]
+}

vendor/github.com/golang/protobuf/protoc-gen-go/descriptor/descriptor.pb.go

@@ -0,0 +1,200 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: github.com/golang/protobuf/protoc-gen-go/descriptor/descriptor.proto
+
+package descriptor
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	descriptorpb "google.golang.org/protobuf/types/descriptorpb"
+	reflect "reflect"
+)
+
+// Symbols defined in public import of google/protobuf/descriptor.proto.
+
+type FieldDescriptorProto_Type = descriptorpb.FieldDescriptorProto_Type
+
+const FieldDescriptorProto_TYPE_DOUBLE = descriptorpb.FieldDescriptorProto_TYPE_DOUBLE
+const FieldDescriptorProto_TYPE_FLOAT = descriptorpb.FieldDescriptorProto_TYPE_FLOAT
+const FieldDescriptorProto_TYPE_INT64 = descriptorpb.FieldDescriptorProto_TYPE_INT64
+const FieldDescriptorProto_TYPE_UINT64 = descriptorpb.FieldDescriptorProto_TYPE_UINT64
+const FieldDescriptorProto_TYPE_INT32 = descriptorpb.FieldDescriptorProto_TYPE_INT32
+const FieldDescriptorProto_TYPE_FIXED64 = descriptorpb.FieldDescriptorProto_TYPE_FIXED64
+const FieldDescriptorProto_TYPE_FIXED32 = descriptorpb.FieldDescriptorProto_TYPE_FIXED32
+const FieldDescriptorProto_TYPE_BOOL = descriptorpb.FieldDescriptorProto_TYPE_BOOL
+const FieldDescriptorProto_TYPE_STRING = descriptorpb.FieldDescriptorProto_TYPE_STRING
+const FieldDescriptorProto_TYPE_GROUP = descriptorpb.FieldDescriptorProto_TYPE_GROUP
+const FieldDescriptorProto_TYPE_MESSAGE = descriptorpb.FieldDescriptorProto_TYPE_MESSAGE
+const FieldDescriptorProto_TYPE_BYTES = descriptorpb.FieldDescriptorProto_TYPE_BYTES
+const FieldDescriptorProto_TYPE_UINT32 = descriptorpb.FieldDescriptorProto_TYPE_UINT32
+const FieldDescriptorProto_TYPE_ENUM = descriptorpb.FieldDescriptorProto_TYPE_ENUM
+const FieldDescriptorProto_TYPE_SFIXED32 = descriptorpb.FieldDescriptorProto_TYPE_SFIXED32
+const FieldDescriptorProto_TYPE_SFIXED64 = descriptorpb.FieldDescriptorProto_TYPE_SFIXED64
+const FieldDescriptorProto_TYPE_SINT32 = descriptorpb.FieldDescriptorProto_TYPE_SINT32
+const FieldDescriptorProto_TYPE_SINT64 = descriptorpb.FieldDescriptorProto_TYPE_SINT64
+
+var FieldDescriptorProto_Type_name = descriptorpb.FieldDescriptorProto_Type_name
+var FieldDescriptorProto_Type_value = descriptorpb.FieldDescriptorProto_Type_value
+
+type FieldDescriptorProto_Label = descriptorpb.FieldDescriptorProto_Label
+
+const FieldDescriptorProto_LABEL_OPTIONAL = descriptorpb.FieldDescriptorProto_LABEL_OPTIONAL
+const FieldDescriptorProto_LABEL_REQUIRED = descriptorpb.FieldDescriptorProto_LABEL_REQUIRED
+const FieldDescriptorProto_LABEL_REPEATED = descriptorpb.FieldDescriptorProto_LABEL_REPEATED
+
+var FieldDescriptorProto_Label_name = descriptorpb.FieldDescriptorProto_Label_name
+var FieldDescriptorProto_Label_value = descriptorpb.FieldDescriptorProto_Label_value
+
+type FileOptions_OptimizeMode = descriptorpb.FileOptions_OptimizeMode
+
+const FileOptions_SPEED = descriptorpb.FileOptions_SPEED
+const FileOptions_CODE_SIZE = descriptorpb.FileOptions_CODE_SIZE
+const FileOptions_LITE_RUNTIME = descriptorpb.FileOptions_LITE_RUNTIME
+
+var FileOptions_OptimizeMode_name = descriptorpb.FileOptions_OptimizeMode_name
+var FileOptions_OptimizeMode_value = descriptorpb.FileOptions_OptimizeMode_value
+
+type FieldOptions_CType = descriptorpb.FieldOptions_CType
+
+const FieldOptions_STRING = descriptorpb.FieldOptions_STRING
+const FieldOptions_CORD = descriptorpb.FieldOptions_CORD
+const FieldOptions_STRING_PIECE = descriptorpb.FieldOptions_STRING_PIECE
+
+var FieldOptions_CType_name = descriptorpb.FieldOptions_CType_name
+var FieldOptions_CType_value = descriptorpb.FieldOptions_CType_value
+
+type FieldOptions_JSType = descriptorpb.FieldOptions_JSType
+
+const FieldOptions_JS_NORMAL = descriptorpb.FieldOptions_JS_NORMAL
+const FieldOptions_JS_STRING = descriptorpb.FieldOptions_JS_STRING
+const FieldOptions_JS_NUMBER = descriptorpb.FieldOptions_JS_NUMBER
+
+var FieldOptions_JSType_name = descriptorpb.FieldOptions_JSType_name
+var FieldOptions_JSType_value = descriptorpb.FieldOptions_JSType_value
+
+type MethodOptions_IdempotencyLevel = descriptorpb.MethodOptions_IdempotencyLevel
+
+const MethodOptions_IDEMPOTENCY_UNKNOWN = descriptorpb.MethodOptions_IDEMPOTENCY_UNKNOWN
+const MethodOptions_NO_SIDE_EFFECTS = descriptorpb.MethodOptions_NO_SIDE_EFFECTS
+const MethodOptions_IDEMPOTENT = descriptorpb.MethodOptions_IDEMPOTENT
+
+var MethodOptions_IdempotencyLevel_name = descriptorpb.MethodOptions_IdempotencyLevel_name
+var MethodOptions_IdempotencyLevel_value = descriptorpb.MethodOptions_IdempotencyLevel_value
+
+type FileDescriptorSet = descriptorpb.FileDescriptorSet
+type FileDescriptorProto = descriptorpb.FileDescriptorProto
+type DescriptorProto = descriptorpb.DescriptorProto
+type ExtensionRangeOptions = descriptorpb.ExtensionRangeOptions
+type FieldDescriptorProto = descriptorpb.FieldDescriptorProto
+type OneofDescriptorProto = descriptorpb.OneofDescriptorProto
+type EnumDescriptorProto = descriptorpb.EnumDescriptorProto
+type EnumValueDescriptorProto = descriptorpb.EnumValueDescriptorProto
+type ServiceDescriptorProto = descriptorpb.ServiceDescriptorProto
+type MethodDescriptorProto = descriptorpb.MethodDescriptorProto
+
+const Default_MethodDescriptorProto_ClientStreaming = descriptorpb.Default_MethodDescriptorProto_ClientStreaming
+const Default_MethodDescriptorProto_ServerStreaming = descriptorpb.Default_MethodDescriptorProto_ServerStreaming
+
+type FileOptions = descriptorpb.FileOptions
+
+const Default_FileOptions_JavaMultipleFiles = descriptorpb.Default_FileOptions_JavaMultipleFiles
+const Default_FileOptions_JavaStringCheckUtf8 = descriptorpb.Default_FileOptions_JavaStringCheckUtf8
+const Default_FileOptions_OptimizeFor = descriptorpb.Default_FileOptions_OptimizeFor
+const Default_FileOptions_CcGenericServices = descriptorpb.Default_FileOptions_CcGenericServices
+const Default_FileOptions_JavaGenericServices = descriptorpb.Default_FileOptions_JavaGenericServices
+const Default_FileOptions_PyGenericServices = descriptorpb.Default_FileOptions_PyGenericServices
+const Default_FileOptions_PhpGenericServices = descriptorpb.Default_FileOptions_PhpGenericServices
+const Default_FileOptions_Deprecated = descriptorpb.Default_FileOptions_Deprecated
+const Default_FileOptions_CcEnableArenas = descriptorpb.Default_FileOptions_CcEnableArenas
+
+type MessageOptions = descriptorpb.MessageOptions
+
+const Default_MessageOptions_MessageSetWireFormat = descriptorpb.Default_MessageOptions_MessageSetWireFormat
+const Default_MessageOptions_NoStandardDescriptorAccessor = descriptorpb.Default_MessageOptions_NoStandardDescriptorAccessor
+const Default_MessageOptions_Deprecated = descriptorpb.Default_MessageOptions_Deprecated
+
+type FieldOptions = descriptorpb.FieldOptions
+
+const Default_FieldOptions_Ctype = descriptorpb.Default_FieldOptions_Ctype
+const Default_FieldOptions_Jstype = descriptorpb.Default_FieldOptions_Jstype
+const Default_FieldOptions_Lazy = descriptorpb.Default_FieldOptions_Lazy
+const Default_FieldOptions_Deprecated = descriptorpb.Default_FieldOptions_Deprecated
+const Default_FieldOptions_Weak = descriptorpb.Default_FieldOptions_Weak
+
+type OneofOptions = descriptorpb.OneofOptions
+type EnumOptions = descriptorpb.EnumOptions
+
+const Default_EnumOptions_Deprecated = descriptorpb.Default_EnumOptions_Deprecated
+
+type EnumValueOptions = descriptorpb.EnumValueOptions
+
+const Default_EnumValueOptions_Deprecated = descriptorpb.Default_EnumValueOptions_Deprecated
+
+type ServiceOptions = descriptorpb.ServiceOptions
+
+const Default_ServiceOptions_Deprecated = descriptorpb.Default_ServiceOptions_Deprecated
+
+type MethodOptions = descriptorpb.MethodOptions
+
+const Default_MethodOptions_Deprecated = descriptorpb.Default_MethodOptions_Deprecated
+const Default_MethodOptions_IdempotencyLevel = descriptorpb.Default_MethodOptions_IdempotencyLevel
+
+type UninterpretedOption = descriptorpb.UninterpretedOption
+type SourceCodeInfo = descriptorpb.SourceCodeInfo
+type GeneratedCodeInfo = descriptorpb.GeneratedCodeInfo
+type DescriptorProto_ExtensionRange = descriptorpb.DescriptorProto_ExtensionRange
+type DescriptorProto_ReservedRange = descriptorpb.DescriptorProto_ReservedRange
+type EnumDescriptorProto_EnumReservedRange = descriptorpb.EnumDescriptorProto_EnumReservedRange
+type UninterpretedOption_NamePart = descriptorpb.UninterpretedOption_NamePart
+type SourceCodeInfo_Location = descriptorpb.SourceCodeInfo_Location
+type GeneratedCodeInfo_Annotation = descriptorpb.GeneratedCodeInfo_Annotation
+
+var File_github_com_golang_protobuf_protoc_gen_go_descriptor_descriptor_proto protoreflect.FileDescriptor
+
+var file_github_com_golang_protobuf_protoc_gen_go_descriptor_descriptor_proto_rawDesc = []byte{
+	0x0a, 0x44, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x6c,
+	0x61, 0x6e, 0x67, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x70, 0x72, 0x6f,
+	0x74, 0x6f, 0x63, 0x2d, 0x67, 0x65, 0x6e, 0x2d, 0x67, 0x6f, 0x2f, 0x64, 0x65, 0x73, 0x63, 0x72,
+	0x69, 0x70, 0x74, 0x6f, 0x72, 0x2f, 0x64, 0x65, 0x73, 0x63, 0x72, 0x69, 0x70, 0x74, 0x6f, 0x72,
+	0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x20, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x70,
+	0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x64, 0x65, 0x73, 0x63, 0x72, 0x69, 0x70, 0x74,
+	0x6f, 0x72, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x42, 0x40, 0x5a, 0x3e, 0x67, 0x69, 0x74, 0x68,
+	0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x6c, 0x61, 0x6e, 0x67, 0x2f, 0x70, 0x72,
+	0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x2d, 0x67, 0x65,
+	0x6e, 0x2d, 0x67, 0x6f, 0x2f, 0x64, 0x65, 0x73, 0x63, 0x72, 0x69, 0x70, 0x74, 0x6f, 0x72, 0x3b,
+	0x64, 0x65, 0x73, 0x63, 0x72, 0x69, 0x70, 0x74, 0x6f, 0x72, 0x50, 0x00, 0x62, 0x06, 0x70, 0x72,
+	0x6f, 0x74, 0x6f, 0x32,
+}
+
+var file_github_com_golang_protobuf_protoc_gen_go_descriptor_descriptor_proto_goTypes = []interface{}{}
+var file_github_com_golang_protobuf_protoc_gen_go_descriptor_descriptor_proto_depIdxs = []int32{
+	0, // [0:0] is the sub-list for method output_type
+	0, // [0:0] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_github_com_golang_protobuf_protoc_gen_go_descriptor_descriptor_proto_init() }
+func file_github_com_golang_protobuf_protoc_gen_go_descriptor_descriptor_proto_init() {
+	if File_github_com_golang_protobuf_protoc_gen_go_descriptor_descriptor_proto != nil {
+		return
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_github_com_golang_protobuf_protoc_gen_go_descriptor_descriptor_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   0,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_github_com_golang_protobuf_protoc_gen_go_descriptor_descriptor_proto_goTypes,
+		DependencyIndexes: file_github_com_golang_protobuf_protoc_gen_go_descriptor_descriptor_proto_depIdxs,
+	}.Build()
+	File_github_com_golang_protobuf_protoc_gen_go_descriptor_descriptor_proto = out.File
+	file_github_com_golang_protobuf_protoc_gen_go_descriptor_descriptor_proto_rawDesc = nil
+	file_github_com_golang_protobuf_protoc_gen_go_descriptor_descriptor_proto_goTypes = nil
+	file_github_com_golang_protobuf_protoc_gen_go_descriptor_descriptor_proto_depIdxs = nil
+}

vendor/google.golang.org/grpc/reflection/README.md

@@ -0,0 +1,18 @@
+# Reflection
+
+Package reflection implements server reflection service.
+
+The service implemented is defined in: https://github.com/grpc/grpc/blob/master/src/proto/grpc/reflection/v1alpha/reflection.proto.
+
+To register server reflection on a gRPC server:
+```go
+import "google.golang.org/grpc/reflection"
+
+s := grpc.NewServer()
+pb.RegisterYourOwnServer(s, &server{})
+
+// Register reflection service on gRPC server.
+reflection.Register(s)
+
+s.Serve(lis)
+```

vendor/google.golang.org/grpc/reflection/grpc_reflection_v1alpha/reflection.pb.go

@@ -0,0 +1,953 @@
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Service exported by server reflection
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.14.0
+// source: reflection/grpc_reflection_v1alpha/reflection.proto
+
+package grpc_reflection_v1alpha
+
+import (
+	proto "github.com/golang/protobuf/proto"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
+// The message sent by the client when calling ServerReflectionInfo method.
+type ServerReflectionRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Host string `protobuf:"bytes,1,opt,name=host,proto3" json:"host,omitempty"`
+	// To use reflection service, the client should set one of the following
+	// fields in message_request. The server distinguishes requests by their
+	// defined field and then handles them using corresponding methods.
+	//
+	// Types that are assignable to MessageRequest:
+	//	*ServerReflectionRequest_FileByFilename
+	//	*ServerReflectionRequest_FileContainingSymbol
+	//	*ServerReflectionRequest_FileContainingExtension
+	//	*ServerReflectionRequest_AllExtensionNumbersOfType
+	//	*ServerReflectionRequest_ListServices
+	MessageRequest isServerReflectionRequest_MessageRequest `protobuf_oneof:"message_request"`
+}
+
+func (x *ServerReflectionRequest) Reset() {
+	*x = ServerReflectionRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ServerReflectionRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ServerReflectionRequest) ProtoMessage() {}
+
+func (x *ServerReflectionRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[0]
+	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 ServerReflectionRequest.ProtoReflect.Descriptor instead.
+func (*ServerReflectionRequest) Descriptor() ([]byte, []int) {
+	return file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *ServerReflectionRequest) GetHost() string {
+	if x != nil {
+		return x.Host
+	}
+	return ""
+}
+
+func (m *ServerReflectionRequest) GetMessageRequest() isServerReflectionRequest_MessageRequest {
+	if m != nil {
+		return m.MessageRequest
+	}
+	return nil
+}
+
+func (x *ServerReflectionRequest) GetFileByFilename() string {
+	if x, ok := x.GetMessageRequest().(*ServerReflectionRequest_FileByFilename); ok {
+		return x.FileByFilename
+	}
+	return ""
+}
+
+func (x *ServerReflectionRequest) GetFileContainingSymbol() string {
+	if x, ok := x.GetMessageRequest().(*ServerReflectionRequest_FileContainingSymbol); ok {
+		return x.FileContainingSymbol
+	}
+	return ""
+}
+
+func (x *ServerReflectionRequest) GetFileContainingExtension() *ExtensionRequest {
+	if x, ok := x.GetMessageRequest().(*ServerReflectionRequest_FileContainingExtension); ok {
+		return x.FileContainingExtension
+	}
+	return nil
+}
+
+func (x *ServerReflectionRequest) GetAllExtensionNumbersOfType() string {
+	if x, ok := x.GetMessageRequest().(*ServerReflectionRequest_AllExtensionNumbersOfType); ok {
+		return x.AllExtensionNumbersOfType
+	}
+	return ""
+}
+
+func (x *ServerReflectionRequest) GetListServices() string {
+	if x, ok := x.GetMessageRequest().(*ServerReflectionRequest_ListServices); ok {
+		return x.ListServices
+	}
+	return ""
+}
+
+type isServerReflectionRequest_MessageRequest interface {
+	isServerReflectionRequest_MessageRequest()
+}
+
+type ServerReflectionRequest_FileByFilename struct {
+	// Find a proto file by the file name.
+	FileByFilename string `protobuf:"bytes,3,opt,name=file_by_filename,json=fileByFilename,proto3,oneof"`
+}
+
+type ServerReflectionRequest_FileContainingSymbol struct {
+	// Find the proto file that declares the given fully-qualified symbol name.
+	// This field should be a fully-qualified symbol name
+	// (e.g. <package>.<service>[.<method>] or <package>.<type>).
+	FileContainingSymbol string `protobuf:"bytes,4,opt,name=file_containing_symbol,json=fileContainingSymbol,proto3,oneof"`
+}
+
+type ServerReflectionRequest_FileContainingExtension struct {
+	// Find the proto file which defines an extension extending the given
+	// message type with the given field number.
+	FileContainingExtension *ExtensionRequest `protobuf:"bytes,5,opt,name=file_containing_extension,json=fileContainingExtension,proto3,oneof"`
+}
+
+type ServerReflectionRequest_AllExtensionNumbersOfType struct {
+	// Finds the tag numbers used by all known extensions of extendee_type, and
+	// appends them to ExtensionNumberResponse in an undefined order.
+	// Its corresponding method is best-effort: it's not guaranteed that the
+	// reflection service will implement this method, and it's not guaranteed
+	// that this method will provide all extensions. Returns
+	// StatusCode::UNIMPLEMENTED if it's not implemented.
+	// This field should be a fully-qualified type name. The format is
+	// <package>.<type>
+	AllExtensionNumbersOfType string `protobuf:"bytes,6,opt,name=all_extension_numbers_of_type,json=allExtensionNumbersOfType,proto3,oneof"`
+}
+
+type ServerReflectionRequest_ListServices struct {
+	// List the full names of registered services. The content will not be
+	// checked.
+	ListServices string `protobuf:"bytes,7,opt,name=list_services,json=listServices,proto3,oneof"`
+}
+
+func (*ServerReflectionRequest_FileByFilename) isServerReflectionRequest_MessageRequest() {}
+
+func (*ServerReflectionRequest_FileContainingSymbol) isServerReflectionRequest_MessageRequest() {}
+
+func (*ServerReflectionRequest_FileContainingExtension) isServerReflectionRequest_MessageRequest() {}
+
+func (*ServerReflectionRequest_AllExtensionNumbersOfType) isServerReflectionRequest_MessageRequest() {
+}
+
+func (*ServerReflectionRequest_ListServices) isServerReflectionRequest_MessageRequest() {}
+
+// The type name and extension number sent by the client when requesting
+// file_containing_extension.
+type ExtensionRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Fully-qualified type name. The format should be <package>.<type>
+	ContainingType  string `protobuf:"bytes,1,opt,name=containing_type,json=containingType,proto3" json:"containing_type,omitempty"`
+	ExtensionNumber int32  `protobuf:"varint,2,opt,name=extension_number,json=extensionNumber,proto3" json:"extension_number,omitempty"`
+}
+
+func (x *ExtensionRequest) Reset() {
+	*x = ExtensionRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ExtensionRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ExtensionRequest) ProtoMessage() {}
+
+func (x *ExtensionRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_reflection_grpc_reflection_v1alpha_reflection_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 ExtensionRequest.ProtoReflect.Descriptor instead.
+func (*ExtensionRequest) Descriptor() ([]byte, []int) {
+	return file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *ExtensionRequest) GetContainingType() string {
+	if x != nil {
+		return x.ContainingType
+	}
+	return ""
+}
+
+func (x *ExtensionRequest) GetExtensionNumber() int32 {
+	if x != nil {
+		return x.ExtensionNumber
+	}
+	return 0
+}
+
+// The message sent by the server to answer ServerReflectionInfo method.
+type ServerReflectionResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	ValidHost       string                   `protobuf:"bytes,1,opt,name=valid_host,json=validHost,proto3" json:"valid_host,omitempty"`
+	OriginalRequest *ServerReflectionRequest `protobuf:"bytes,2,opt,name=original_request,json=originalRequest,proto3" json:"original_request,omitempty"`
+	// The server sets one of the following fields according to the
+	// message_request in the request.
+	//
+	// Types that are assignable to MessageResponse:
+	//	*ServerReflectionResponse_FileDescriptorResponse
+	//	*ServerReflectionResponse_AllExtensionNumbersResponse
+	//	*ServerReflectionResponse_ListServicesResponse
+	//	*ServerReflectionResponse_ErrorResponse
+	MessageResponse isServerReflectionResponse_MessageResponse `protobuf_oneof:"message_response"`
+}
+
+func (x *ServerReflectionResponse) Reset() {
+	*x = ServerReflectionResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ServerReflectionResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ServerReflectionResponse) ProtoMessage() {}
+
+func (x *ServerReflectionResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_reflection_grpc_reflection_v1alpha_reflection_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 ServerReflectionResponse.ProtoReflect.Descriptor instead.
+func (*ServerReflectionResponse) Descriptor() ([]byte, []int) {
+	return file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *ServerReflectionResponse) GetValidHost() string {
+	if x != nil {
+		return x.ValidHost
+	}
+	return ""
+}
+
+func (x *ServerReflectionResponse) GetOriginalRequest() *ServerReflectionRequest {
+	if x != nil {
+		return x.OriginalRequest
+	}
+	return nil
+}
+
+func (m *ServerReflectionResponse) GetMessageResponse() isServerReflectionResponse_MessageResponse {
+	if m != nil {
+		return m.MessageResponse
+	}
+	return nil
+}
+
+func (x *ServerReflectionResponse) GetFileDescriptorResponse() *FileDescriptorResponse {
+	if x, ok := x.GetMessageResponse().(*ServerReflectionResponse_FileDescriptorResponse); ok {
+		return x.FileDescriptorResponse
+	}
+	return nil
+}
+
+func (x *ServerReflectionResponse) GetAllExtensionNumbersResponse() *ExtensionNumberResponse {
+	if x, ok := x.GetMessageResponse().(*ServerReflectionResponse_AllExtensionNumbersResponse); ok {
+		return x.AllExtensionNumbersResponse
+	}
+	return nil
+}
+
+func (x *ServerReflectionResponse) GetListServicesResponse() *ListServiceResponse {
+	if x, ok := x.GetMessageResponse().(*ServerReflectionResponse_ListServicesResponse); ok {
+		return x.ListServicesResponse
+	}
+	return nil
+}
+
+func (x *ServerReflectionResponse) GetErrorResponse() *ErrorResponse {
+	if x, ok := x.GetMessageResponse().(*ServerReflectionResponse_ErrorResponse); ok {
+		return x.ErrorResponse
+	}
+	return nil
+}
+
+type isServerReflectionResponse_MessageResponse interface {
+	isServerReflectionResponse_MessageResponse()
+}
+
+type ServerReflectionResponse_FileDescriptorResponse struct {
+	// This message is used to answer file_by_filename, file_containing_symbol,
+	// file_containing_extension requests with transitive dependencies.
+	// As the repeated label is not allowed in oneof fields, we use a
+	// FileDescriptorResponse message to encapsulate the repeated fields.
+	// The reflection service is allowed to avoid sending FileDescriptorProtos
+	// that were previously sent in response to earlier requests in the stream.
+	FileDescriptorResponse *FileDescriptorResponse `protobuf:"bytes,4,opt,name=file_descriptor_response,json=fileDescriptorResponse,proto3,oneof"`
+}
+
+type ServerReflectionResponse_AllExtensionNumbersResponse struct {
+	// This message is used to answer all_extension_numbers_of_type requests.
+	AllExtensionNumbersResponse *ExtensionNumberResponse `protobuf:"bytes,5,opt,name=all_extension_numbers_response,json=allExtensionNumbersResponse,proto3,oneof"`
+}
+
+type ServerReflectionResponse_ListServicesResponse struct {
+	// This message is used to answer list_services requests.
+	ListServicesResponse *ListServiceResponse `protobuf:"bytes,6,opt,name=list_services_response,json=listServicesResponse,proto3,oneof"`
+}
+
+type ServerReflectionResponse_ErrorResponse struct {
+	// This message is used when an error occurs.
+	ErrorResponse *ErrorResponse `protobuf:"bytes,7,opt,name=error_response,json=errorResponse,proto3,oneof"`
+}
+
+func (*ServerReflectionResponse_FileDescriptorResponse) isServerReflectionResponse_MessageResponse() {
+}
+
+func (*ServerReflectionResponse_AllExtensionNumbersResponse) isServerReflectionResponse_MessageResponse() {
+}
+
+func (*ServerReflectionResponse_ListServicesResponse) isServerReflectionResponse_MessageResponse() {}
+
+func (*ServerReflectionResponse_ErrorResponse) isServerReflectionResponse_MessageResponse() {}
+
+// Serialized FileDescriptorProto messages sent by the server answering
+// a file_by_filename, file_containing_symbol, or file_containing_extension
+// request.
+type FileDescriptorResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Serialized FileDescriptorProto messages. We avoid taking a dependency on
+	// descriptor.proto, which uses proto2 only features, by making them opaque
+	// bytes instead.
+	FileDescriptorProto [][]byte `protobuf:"bytes,1,rep,name=file_descriptor_proto,json=fileDescriptorProto,proto3" json:"file_descriptor_proto,omitempty"`
+}
+
+func (x *FileDescriptorResponse) Reset() {
+	*x = FileDescriptorResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *FileDescriptorResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*FileDescriptorResponse) ProtoMessage() {}
+
+func (x *FileDescriptorResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[3]
+	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 FileDescriptorResponse.ProtoReflect.Descriptor instead.
+func (*FileDescriptorResponse) Descriptor() ([]byte, []int) {
+	return file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *FileDescriptorResponse) GetFileDescriptorProto() [][]byte {
+	if x != nil {
+		return x.FileDescriptorProto
+	}
+	return nil
+}
+
+// A list of extension numbers sent by the server answering
+// all_extension_numbers_of_type request.
+type ExtensionNumberResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Full name of the base type, including the package name. The format
+	// is <package>.<type>
+	BaseTypeName    string  `protobuf:"bytes,1,opt,name=base_type_name,json=baseTypeName,proto3" json:"base_type_name,omitempty"`
+	ExtensionNumber []int32 `protobuf:"varint,2,rep,packed,name=extension_number,json=extensionNumber,proto3" json:"extension_number,omitempty"`
+}
+
+func (x *ExtensionNumberResponse) Reset() {
+	*x = ExtensionNumberResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ExtensionNumberResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ExtensionNumberResponse) ProtoMessage() {}
+
+func (x *ExtensionNumberResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[4]
+	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 ExtensionNumberResponse.ProtoReflect.Descriptor instead.
+func (*ExtensionNumberResponse) Descriptor() ([]byte, []int) {
+	return file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *ExtensionNumberResponse) GetBaseTypeName() string {
+	if x != nil {
+		return x.BaseTypeName
+	}
+	return ""
+}
+
+func (x *ExtensionNumberResponse) GetExtensionNumber() []int32 {
+	if x != nil {
+		return x.ExtensionNumber
+	}
+	return nil
+}
+
+// A list of ServiceResponse sent by the server answering list_services request.
+type ListServiceResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The information of each service may be expanded in the future, so we use
+	// ServiceResponse message to encapsulate it.
+	Service []*ServiceResponse `protobuf:"bytes,1,rep,name=service,proto3" json:"service,omitempty"`
+}
+
+func (x *ListServiceResponse) Reset() {
+	*x = ListServiceResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ListServiceResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ListServiceResponse) ProtoMessage() {}
+
+func (x *ListServiceResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[5]
+	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 ListServiceResponse.ProtoReflect.Descriptor instead.
+func (*ListServiceResponse) Descriptor() ([]byte, []int) {
+	return file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *ListServiceResponse) GetService() []*ServiceResponse {
+	if x != nil {
+		return x.Service
+	}
+	return nil
+}
+
+// The information of a single service used by ListServiceResponse to answer
+// list_services request.
+type ServiceResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Full name of a registered service, including its package name. The format
+	// is <package>.<service>
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+}
+
+func (x *ServiceResponse) Reset() {
+	*x = ServiceResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ServiceResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ServiceResponse) ProtoMessage() {}
+
+func (x *ServiceResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[6]
+	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 ServiceResponse.ProtoReflect.Descriptor instead.
+func (*ServiceResponse) Descriptor() ([]byte, []int) {
+	return file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *ServiceResponse) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+// The error code and error message sent by the server when an error occurs.
+type ErrorResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// This field uses the error codes defined in grpc::StatusCode.
+	ErrorCode    int32  `protobuf:"varint,1,opt,name=error_code,json=errorCode,proto3" json:"error_code,omitempty"`
+	ErrorMessage string `protobuf:"bytes,2,opt,name=error_message,json=errorMessage,proto3" json:"error_message,omitempty"`
+}
+
+func (x *ErrorResponse) Reset() {
+	*x = ErrorResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[7]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ErrorResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ErrorResponse) ProtoMessage() {}
+
+func (x *ErrorResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[7]
+	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 ErrorResponse.ProtoReflect.Descriptor instead.
+func (*ErrorResponse) Descriptor() ([]byte, []int) {
+	return file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDescGZIP(), []int{7}
+}
+
+func (x *ErrorResponse) GetErrorCode() int32 {
+	if x != nil {
+		return x.ErrorCode
+	}
+	return 0
+}
+
+func (x *ErrorResponse) GetErrorMessage() string {
+	if x != nil {
+		return x.ErrorMessage
+	}
+	return ""
+}
+
+var File_reflection_grpc_reflection_v1alpha_reflection_proto protoreflect.FileDescriptor
+
+var file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDesc = []byte{
+	0x0a, 0x33, 0x72, 0x65, 0x66, 0x6c, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x67, 0x72, 0x70,
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+}
+
+var (
+	file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDescOnce sync.Once
+	file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDescData = file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDesc
+)
+
+func file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDescGZIP() []byte {
+	file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDescOnce.Do(func() {
+		file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDescData = protoimpl.X.CompressGZIP(file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDescData)
+	})
+	return file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDescData
+}
+
+var file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes = make([]protoimpl.MessageInfo, 8)
+var file_reflection_grpc_reflection_v1alpha_reflection_proto_goTypes = []interface{}{
+	(*ServerReflectionRequest)(nil),  // 0: grpc.reflection.v1alpha.ServerReflectionRequest
+	(*ExtensionRequest)(nil),         // 1: grpc.reflection.v1alpha.ExtensionRequest
+	(*ServerReflectionResponse)(nil), // 2: grpc.reflection.v1alpha.ServerReflectionResponse
+	(*FileDescriptorResponse)(nil),   // 3: grpc.reflection.v1alpha.FileDescriptorResponse
+	(*ExtensionNumberResponse)(nil),  // 4: grpc.reflection.v1alpha.ExtensionNumberResponse
+	(*ListServiceResponse)(nil),      // 5: grpc.reflection.v1alpha.ListServiceResponse
+	(*ServiceResponse)(nil),          // 6: grpc.reflection.v1alpha.ServiceResponse
+	(*ErrorResponse)(nil),            // 7: grpc.reflection.v1alpha.ErrorResponse
+}
+var file_reflection_grpc_reflection_v1alpha_reflection_proto_depIdxs = []int32{
+	1, // 0: grpc.reflection.v1alpha.ServerReflectionRequest.file_containing_extension:type_name -> grpc.reflection.v1alpha.ExtensionRequest
+	0, // 1: grpc.reflection.v1alpha.ServerReflectionResponse.original_request:type_name -> grpc.reflection.v1alpha.ServerReflectionRequest
+	3, // 2: grpc.reflection.v1alpha.ServerReflectionResponse.file_descriptor_response:type_name -> grpc.reflection.v1alpha.FileDescriptorResponse
+	4, // 3: grpc.reflection.v1alpha.ServerReflectionResponse.all_extension_numbers_response:type_name -> grpc.reflection.v1alpha.ExtensionNumberResponse
+	5, // 4: grpc.reflection.v1alpha.ServerReflectionResponse.list_services_response:type_name -> grpc.reflection.v1alpha.ListServiceResponse
+	7, // 5: grpc.reflection.v1alpha.ServerReflectionResponse.error_response:type_name -> grpc.reflection.v1alpha.ErrorResponse
+	6, // 6: grpc.reflection.v1alpha.ListServiceResponse.service:type_name -> grpc.reflection.v1alpha.ServiceResponse
+	0, // 7: grpc.reflection.v1alpha.ServerReflection.ServerReflectionInfo:input_type -> grpc.reflection.v1alpha.ServerReflectionRequest
+	2, // 8: grpc.reflection.v1alpha.ServerReflection.ServerReflectionInfo:output_type -> grpc.reflection.v1alpha.ServerReflectionResponse
+	8, // [8:9] is the sub-list for method output_type
+	7, // [7:8] is the sub-list for method input_type
+	7, // [7:7] is the sub-list for extension type_name
+	7, // [7:7] is the sub-list for extension extendee
+	0, // [0:7] is the sub-list for field type_name
+}
+
+func init() { file_reflection_grpc_reflection_v1alpha_reflection_proto_init() }
+func file_reflection_grpc_reflection_v1alpha_reflection_proto_init() {
+	if File_reflection_grpc_reflection_v1alpha_reflection_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ServerReflectionRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ExtensionRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ServerReflectionResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*FileDescriptorResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ExtensionNumberResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ListServiceResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ServiceResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ErrorResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[0].OneofWrappers = []interface{}{
+		(*ServerReflectionRequest_FileByFilename)(nil),
+		(*ServerReflectionRequest_FileContainingSymbol)(nil),
+		(*ServerReflectionRequest_FileContainingExtension)(nil),
+		(*ServerReflectionRequest_AllExtensionNumbersOfType)(nil),
+		(*ServerReflectionRequest_ListServices)(nil),
+	}
+	file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes[2].OneofWrappers = []interface{}{
+		(*ServerReflectionResponse_FileDescriptorResponse)(nil),
+		(*ServerReflectionResponse_AllExtensionNumbersResponse)(nil),
+		(*ServerReflectionResponse_ListServicesResponse)(nil),
+		(*ServerReflectionResponse_ErrorResponse)(nil),
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   8,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_reflection_grpc_reflection_v1alpha_reflection_proto_goTypes,
+		DependencyIndexes: file_reflection_grpc_reflection_v1alpha_reflection_proto_depIdxs,
+		MessageInfos:      file_reflection_grpc_reflection_v1alpha_reflection_proto_msgTypes,
+	}.Build()
+	File_reflection_grpc_reflection_v1alpha_reflection_proto = out.File
+	file_reflection_grpc_reflection_v1alpha_reflection_proto_rawDesc = nil
+	file_reflection_grpc_reflection_v1alpha_reflection_proto_goTypes = nil
+	file_reflection_grpc_reflection_v1alpha_reflection_proto_depIdxs = nil
+}

vendor/google.golang.org/grpc/reflection/grpc_reflection_v1alpha/reflection.proto

@@ -0,0 +1,138 @@
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Service exported by server reflection
+
+syntax = "proto3";
+
+option go_package = "google.golang.org/grpc/reflection/grpc_reflection_v1alpha";
+
+package grpc.reflection.v1alpha;
+
+service ServerReflection {
+  // The reflection service is structured as a bidirectional stream, ensuring
+  // all related requests go to a single server.
+  rpc ServerReflectionInfo(stream ServerReflectionRequest)
+      returns (stream ServerReflectionResponse);
+}
+
+// The message sent by the client when calling ServerReflectionInfo method.
+message ServerReflectionRequest {
+  string host = 1;
+  // To use reflection service, the client should set one of the following
+  // fields in message_request. The server distinguishes requests by their
+  // defined field and then handles them using corresponding methods.
+  oneof message_request {
+    // Find a proto file by the file name.
+    string file_by_filename = 3;
+
+    // Find the proto file that declares the given fully-qualified symbol name.
+    // This field should be a fully-qualified symbol name
+    // (e.g. <package>.<service>[.<method>] or <package>.<type>).
+    string file_containing_symbol = 4;
+
+    // Find the proto file which defines an extension extending the given
+    // message type with the given field number.
+    ExtensionRequest file_containing_extension = 5;
+
+    // Finds the tag numbers used by all known extensions of extendee_type, and
+    // appends them to ExtensionNumberResponse in an undefined order.
+    // Its corresponding method is best-effort: it's not guaranteed that the
+    // reflection service will implement this method, and it's not guaranteed
+    // that this method will provide all extensions. Returns
+    // StatusCode::UNIMPLEMENTED if it's not implemented.
+    // This field should be a fully-qualified type name. The format is
+    // <package>.<type>
+    string all_extension_numbers_of_type = 6;
+
+    // List the full names of registered services. The content will not be
+    // checked.
+    string list_services = 7;
+  }
+}
+
+// The type name and extension number sent by the client when requesting
+// file_containing_extension.
+message ExtensionRequest {
+  // Fully-qualified type name. The format should be <package>.<type>
+  string containing_type = 1;
+  int32 extension_number = 2;
+}
+
+// The message sent by the server to answer ServerReflectionInfo method.
+message ServerReflectionResponse {
+  string valid_host = 1;
+  ServerReflectionRequest original_request = 2;
+  // The server sets one of the following fields according to the
+  // message_request in the request.
+  oneof message_response {
+    // This message is used to answer file_by_filename, file_containing_symbol,
+    // file_containing_extension requests with transitive dependencies.
+    // As the repeated label is not allowed in oneof fields, we use a
+    // FileDescriptorResponse message to encapsulate the repeated fields.
+    // The reflection service is allowed to avoid sending FileDescriptorProtos
+    // that were previously sent in response to earlier requests in the stream.
+    FileDescriptorResponse file_descriptor_response = 4;
+
+    // This message is used to answer all_extension_numbers_of_type requests.
+    ExtensionNumberResponse all_extension_numbers_response = 5;
+
+    // This message is used to answer list_services requests.
+    ListServiceResponse list_services_response = 6;
+
+    // This message is used when an error occurs.
+    ErrorResponse error_response = 7;
+  }
+}
+
+// Serialized FileDescriptorProto messages sent by the server answering
+// a file_by_filename, file_containing_symbol, or file_containing_extension
+// request.
+message FileDescriptorResponse {
+  // Serialized FileDescriptorProto messages. We avoid taking a dependency on
+  // descriptor.proto, which uses proto2 only features, by making them opaque
+  // bytes instead.
+  repeated bytes file_descriptor_proto = 1;
+}
+
+// A list of extension numbers sent by the server answering
+// all_extension_numbers_of_type request.
+message ExtensionNumberResponse {
+  // Full name of the base type, including the package name. The format
+  // is <package>.<type>
+  string base_type_name = 1;
+  repeated int32 extension_number = 2;
+}
+
+// A list of ServiceResponse sent by the server answering list_services request.
+message ListServiceResponse {
+  // The information of each service may be expanded in the future, so we use
+  // ServiceResponse message to encapsulate it.
+  repeated ServiceResponse service = 1;
+}
+
+// The information of a single service used by ListServiceResponse to answer
+// list_services request.
+message ServiceResponse {
+  // Full name of a registered service, including its package name. The format
+  // is <package>.<service>
+  string name = 1;
+}
+
+// The error code and error message sent by the server when an error occurs.
+message ErrorResponse {
+  // This field uses the error codes defined in grpc::StatusCode.
+  int32 error_code = 1;
+  string error_message = 2;
+}

vendor/google.golang.org/grpc/reflection/grpc_reflection_v1alpha/reflection_grpc.pb.go

@@ -0,0 +1,139 @@
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.1.0
+// - protoc             v3.14.0
+// source: reflection/grpc_reflection_v1alpha/reflection.proto
+
+package grpc_reflection_v1alpha
+
+import (
+	context "context"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
+const _ = grpc.SupportPackageIsVersion7
+
+// ServerReflectionClient is the client API for ServerReflection service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type ServerReflectionClient interface {
+	// The reflection service is structured as a bidirectional stream, ensuring
+	// all related requests go to a single server.
+	ServerReflectionInfo(ctx context.Context, opts ...grpc.CallOption) (ServerReflection_ServerReflectionInfoClient, error)
+}
+
+type serverReflectionClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewServerReflectionClient(cc grpc.ClientConnInterface) ServerReflectionClient {
+	return &serverReflectionClient{cc}
+}
+
+func (c *serverReflectionClient) ServerReflectionInfo(ctx context.Context, opts ...grpc.CallOption) (ServerReflection_ServerReflectionInfoClient, error) {
+	stream, err := c.cc.NewStream(ctx, &ServerReflection_ServiceDesc.Streams[0], "/grpc.reflection.v1alpha.ServerReflection/ServerReflectionInfo", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &serverReflectionServerReflectionInfoClient{stream}
+	return x, nil
+}
+
+type ServerReflection_ServerReflectionInfoClient interface {
+	Send(*ServerReflectionRequest) error
+	Recv() (*ServerReflectionResponse, error)
+	grpc.ClientStream
+}
+
+type serverReflectionServerReflectionInfoClient struct {
+	grpc.ClientStream
+}
+
+func (x *serverReflectionServerReflectionInfoClient) Send(m *ServerReflectionRequest) error {
+	return x.ClientStream.SendMsg(m)
+}
+
+func (x *serverReflectionServerReflectionInfoClient) Recv() (*ServerReflectionResponse, error) {
+	m := new(ServerReflectionResponse)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+// ServerReflectionServer is the server API for ServerReflection service.
+// All implementations should embed UnimplementedServerReflectionServer
+// for forward compatibility
+type ServerReflectionServer interface {
+	// The reflection service is structured as a bidirectional stream, ensuring
+	// all related requests go to a single server.
+	ServerReflectionInfo(ServerReflection_ServerReflectionInfoServer) error
+}
+
+// UnimplementedServerReflectionServer should be embedded to have forward compatible implementations.
+type UnimplementedServerReflectionServer struct {
+}
+
+func (UnimplementedServerReflectionServer) ServerReflectionInfo(ServerReflection_ServerReflectionInfoServer) error {
+	return status.Errorf(codes.Unimplemented, "method ServerReflectionInfo not implemented")
+}
+
+// UnsafeServerReflectionServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to ServerReflectionServer will
+// result in compilation errors.
+type UnsafeServerReflectionServer interface {
+	mustEmbedUnimplementedServerReflectionServer()
+}
+
+func RegisterServerReflectionServer(s grpc.ServiceRegistrar, srv ServerReflectionServer) {
+	s.RegisterService(&ServerReflection_ServiceDesc, srv)
+}
+
+func _ServerReflection_ServerReflectionInfo_Handler(srv interface{}, stream grpc.ServerStream) error {
+	return srv.(ServerReflectionServer).ServerReflectionInfo(&serverReflectionServerReflectionInfoServer{stream})
+}
+
+type ServerReflection_ServerReflectionInfoServer interface {
+	Send(*ServerReflectionResponse) error
+	Recv() (*ServerReflectionRequest, error)
+	grpc.ServerStream
+}
+
+type serverReflectionServerReflectionInfoServer struct {
+	grpc.ServerStream
+}
+
+func (x *serverReflectionServerReflectionInfoServer) Send(m *ServerReflectionResponse) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func (x *serverReflectionServerReflectionInfoServer) Recv() (*ServerReflectionRequest, error) {
+	m := new(ServerReflectionRequest)
+	if err := x.ServerStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+// ServerReflection_ServiceDesc is the grpc.ServiceDesc for ServerReflection service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var ServerReflection_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "grpc.reflection.v1alpha.ServerReflection",
+	HandlerType: (*ServerReflectionServer)(nil),
+	Methods:     []grpc.MethodDesc{},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "ServerReflectionInfo",
+			Handler:       _ServerReflection_ServerReflectionInfo_Handler,
+			ServerStreams: true,
+			ClientStreams: true,
+		},
+	},
+	Metadata: "reflection/grpc_reflection_v1alpha/reflection.proto",
+}

vendor/google.golang.org/grpc/reflection/serverreflection.go

@@ -0,0 +1,496 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/*
+Package reflection implements server reflection service.
+
+The service implemented is defined in:
+https://github.com/grpc/grpc/blob/master/src/proto/grpc/reflection/v1alpha/reflection.proto.
+
+To register server reflection on a gRPC server:
+	import "google.golang.org/grpc/reflection"
+
+	s := grpc.NewServer()
+	pb.RegisterYourOwnServer(s, &server{})
+
+	// Register reflection service on gRPC server.
+	reflection.Register(s)
+
+	s.Serve(lis)
+
+*/
+package reflection // import "google.golang.org/grpc/reflection"
+
+import (
+	"bytes"
+	"compress/gzip"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"reflect"
+	"sort"
+	"sync"
+
+	"github.com/golang/protobuf/proto"
+	dpb "github.com/golang/protobuf/protoc-gen-go/descriptor"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	rpb "google.golang.org/grpc/reflection/grpc_reflection_v1alpha"
+	"google.golang.org/grpc/status"
+)
+
+// GRPCServer is the interface provided by a gRPC server. It is implemented by
+// *grpc.Server, but could also be implemented by other concrete types. It acts
+// as a registry, for accumulating the services exposed by the server.
+type GRPCServer interface {
+	grpc.ServiceRegistrar
+	GetServiceInfo() map[string]grpc.ServiceInfo
+}
+
+var _ GRPCServer = (*grpc.Server)(nil)
+
+type serverReflectionServer struct {
+	rpb.UnimplementedServerReflectionServer
+	s GRPCServer
+
+	initSymbols  sync.Once
+	serviceNames []string
+	symbols      map[string]*dpb.FileDescriptorProto // map of fully-qualified names to files
+}
+
+// Register registers the server reflection service on the given gRPC server.
+func Register(s GRPCServer) {
+	rpb.RegisterServerReflectionServer(s, &serverReflectionServer{
+		s: s,
+	})
+}
+
+// protoMessage is used for type assertion on proto messages.
+// Generated proto message implements function Descriptor(), but Descriptor()
+// is not part of interface proto.Message. This interface is needed to
+// call Descriptor().
+type protoMessage interface {
+	Descriptor() ([]byte, []int)
+}
+
+func (s *serverReflectionServer) getSymbols() (svcNames []string, symbolIndex map[string]*dpb.FileDescriptorProto) {
+	s.initSymbols.Do(func() {
+		serviceInfo := s.s.GetServiceInfo()
+
+		s.symbols = map[string]*dpb.FileDescriptorProto{}
+		s.serviceNames = make([]string, 0, len(serviceInfo))
+		processed := map[string]struct{}{}
+		for svc, info := range serviceInfo {
+			s.serviceNames = append(s.serviceNames, svc)
+			fdenc, ok := parseMetadata(info.Metadata)
+			if !ok {
+				continue
+			}
+			fd, err := decodeFileDesc(fdenc)
+			if err != nil {
+				continue
+			}
+			s.processFile(fd, processed)
+		}
+		sort.Strings(s.serviceNames)
+	})
+
+	return s.serviceNames, s.symbols
+}
+
+func (s *serverReflectionServer) processFile(fd *dpb.FileDescriptorProto, processed map[string]struct{}) {
+	filename := fd.GetName()
+	if _, ok := processed[filename]; ok {
+		return
+	}
+	processed[filename] = struct{}{}
+
+	prefix := fd.GetPackage()
+
+	for _, msg := range fd.MessageType {
+		s.processMessage(fd, prefix, msg)
+	}
+	for _, en := range fd.EnumType {
+		s.processEnum(fd, prefix, en)
+	}
+	for _, ext := range fd.Extension {
+		s.processField(fd, prefix, ext)
+	}
+	for _, svc := range fd.Service {
+		svcName := fqn(prefix, svc.GetName())
+		s.symbols[svcName] = fd
+		for _, meth := range svc.Method {
+			name := fqn(svcName, meth.GetName())
+			s.symbols[name] = fd
+		}
+	}
+
+	for _, dep := range fd.Dependency {
+		fdenc := proto.FileDescriptor(dep)
+		fdDep, err := decodeFileDesc(fdenc)
+		if err != nil {
+			continue
+		}
+		s.processFile(fdDep, processed)
+	}
+}
+
+func (s *serverReflectionServer) processMessage(fd *dpb.FileDescriptorProto, prefix string, msg *dpb.DescriptorProto) {
+	msgName := fqn(prefix, msg.GetName())
+	s.symbols[msgName] = fd
+
+	for _, nested := range msg.NestedType {
+		s.processMessage(fd, msgName, nested)
+	}
+	for _, en := range msg.EnumType {
+		s.processEnum(fd, msgName, en)
+	}
+	for _, ext := range msg.Extension {
+		s.processField(fd, msgName, ext)
+	}
+	for _, fld := range msg.Field {
+		s.processField(fd, msgName, fld)
+	}
+	for _, oneof := range msg.OneofDecl {
+		oneofName := fqn(msgName, oneof.GetName())
+		s.symbols[oneofName] = fd
+	}
+}
+
+func (s *serverReflectionServer) processEnum(fd *dpb.FileDescriptorProto, prefix string, en *dpb.EnumDescriptorProto) {
+	enName := fqn(prefix, en.GetName())
+	s.symbols[enName] = fd
+
+	for _, val := range en.Value {
+		valName := fqn(enName, val.GetName())
+		s.symbols[valName] = fd
+	}
+}
+
+func (s *serverReflectionServer) processField(fd *dpb.FileDescriptorProto, prefix string, fld *dpb.FieldDescriptorProto) {
+	fldName := fqn(prefix, fld.GetName())
+	s.symbols[fldName] = fd
+}
+
+func fqn(prefix, name string) string {
+	if prefix == "" {
+		return name
+	}
+	return prefix + "." + name
+}
+
+// fileDescForType gets the file descriptor for the given type.
+// The given type should be a proto message.
+func (s *serverReflectionServer) fileDescForType(st reflect.Type) (*dpb.FileDescriptorProto, error) {
+	m, ok := reflect.Zero(reflect.PtrTo(st)).Interface().(protoMessage)
+	if !ok {
+		return nil, fmt.Errorf("failed to create message from type: %v", st)
+	}
+	enc, _ := m.Descriptor()
+
+	return decodeFileDesc(enc)
+}
+
+// decodeFileDesc does decompression and unmarshalling on the given
+// file descriptor byte slice.
+func decodeFileDesc(enc []byte) (*dpb.FileDescriptorProto, error) {
+	raw, err := decompress(enc)
+	if err != nil {
+		return nil, fmt.Errorf("failed to decompress enc: %v", err)
+	}
+
+	fd := new(dpb.FileDescriptorProto)
+	if err := proto.Unmarshal(raw, fd); err != nil {
+		return nil, fmt.Errorf("bad descriptor: %v", err)
+	}
+	return fd, nil
+}
+
+// decompress does gzip decompression.
+func decompress(b []byte) ([]byte, error) {
+	r, err := gzip.NewReader(bytes.NewReader(b))
+	if err != nil {
+		return nil, fmt.Errorf("bad gzipped descriptor: %v", err)
+	}
+	out, err := ioutil.ReadAll(r)
+	if err != nil {
+		return nil, fmt.Errorf("bad gzipped descriptor: %v", err)
+	}
+	return out, nil
+}
+
+func typeForName(name string) (reflect.Type, error) {
+	pt := proto.MessageType(name)
+	if pt == nil {
+		return nil, fmt.Errorf("unknown type: %q", name)
+	}
+	st := pt.Elem()
+
+	return st, nil
+}
+
+func fileDescContainingExtension(st reflect.Type, ext int32) (*dpb.FileDescriptorProto, error) {
+	m, ok := reflect.Zero(reflect.PtrTo(st)).Interface().(proto.Message)
+	if !ok {
+		return nil, fmt.Errorf("failed to create message from type: %v", st)
+	}
+
+	var extDesc *proto.ExtensionDesc
+	for id, desc := range proto.RegisteredExtensions(m) {
+		if id == ext {
+			extDesc = desc
+			break
+		}
+	}
+
+	if extDesc == nil {
+		return nil, fmt.Errorf("failed to find registered extension for extension number %v", ext)
+	}
+
+	return decodeFileDesc(proto.FileDescriptor(extDesc.Filename))
+}
+
+func (s *serverReflectionServer) allExtensionNumbersForType(st reflect.Type) ([]int32, error) {
+	m, ok := reflect.Zero(reflect.PtrTo(st)).Interface().(proto.Message)
+	if !ok {
+		return nil, fmt.Errorf("failed to create message from type: %v", st)
+	}
+
+	exts := proto.RegisteredExtensions(m)
+	out := make([]int32, 0, len(exts))
+	for id := range exts {
+		out = append(out, id)
+	}
+	return out, nil
+}
+
+// fileDescWithDependencies returns a slice of serialized fileDescriptors in
+// wire format ([]byte). The fileDescriptors will include fd and all the
+// transitive dependencies of fd with names not in sentFileDescriptors.
+func fileDescWithDependencies(fd *dpb.FileDescriptorProto, sentFileDescriptors map[string]bool) ([][]byte, error) {
+	r := [][]byte{}
+	queue := []*dpb.FileDescriptorProto{fd}
+	for len(queue) > 0 {
+		currentfd := queue[0]
+		queue = queue[1:]
+		if sent := sentFileDescriptors[currentfd.GetName()]; len(r) == 0 || !sent {
+			sentFileDescriptors[currentfd.GetName()] = true
+			currentfdEncoded, err := proto.Marshal(currentfd)
+			if err != nil {
+				return nil, err
+			}
+			r = append(r, currentfdEncoded)
+		}
+		for _, dep := range currentfd.Dependency {
+			fdenc := proto.FileDescriptor(dep)
+			fdDep, err := decodeFileDesc(fdenc)
+			if err != nil {
+				continue
+			}
+			queue = append(queue, fdDep)
+		}
+	}
+	return r, nil
+}
+
+// fileDescEncodingByFilename finds the file descriptor for given filename,
+// finds all of its previously unsent transitive dependencies, does marshalling
+// on them, and returns the marshalled result.
+func (s *serverReflectionServer) fileDescEncodingByFilename(name string, sentFileDescriptors map[string]bool) ([][]byte, error) {
+	enc := proto.FileDescriptor(name)
+	if enc == nil {
+		return nil, fmt.Errorf("unknown file: %v", name)
+	}
+	fd, err := decodeFileDesc(enc)
+	if err != nil {
+		return nil, err
+	}
+	return fileDescWithDependencies(fd, sentFileDescriptors)
+}
+
+// parseMetadata finds the file descriptor bytes specified meta.
+// For SupportPackageIsVersion4, m is the name of the proto file, we
+// call proto.FileDescriptor to get the byte slice.
+// For SupportPackageIsVersion3, m is a byte slice itself.
+func parseMetadata(meta interface{}) ([]byte, bool) {
+	// Check if meta is the file name.
+	if fileNameForMeta, ok := meta.(string); ok {
+		return proto.FileDescriptor(fileNameForMeta), true
+	}
+
+	// Check if meta is the byte slice.
+	if enc, ok := meta.([]byte); ok {
+		return enc, true
+	}
+
+	return nil, false
+}
+
+// fileDescEncodingContainingSymbol finds the file descriptor containing the
+// given symbol, finds all of its previously unsent transitive dependencies,
+// does marshalling on them, and returns the marshalled result. The given symbol
+// can be a type, a service or a method.
+func (s *serverReflectionServer) fileDescEncodingContainingSymbol(name string, sentFileDescriptors map[string]bool) ([][]byte, error) {
+	_, symbols := s.getSymbols()
+	fd := symbols[name]
+	if fd == nil {
+		// Check if it's a type name that was not present in the
+		// transitive dependencies of the registered services.
+		if st, err := typeForName(name); err == nil {
+			fd, err = s.fileDescForType(st)
+			if err != nil {
+				return nil, err
+			}
+		}
+	}
+
+	if fd == nil {
+		return nil, fmt.Errorf("unknown symbol: %v", name)
+	}
+
+	return fileDescWithDependencies(fd, sentFileDescriptors)
+}
+
+// fileDescEncodingContainingExtension finds the file descriptor containing
+// given extension, finds all of its previously unsent transitive dependencies,
+// does marshalling on them, and returns the marshalled result.
+func (s *serverReflectionServer) fileDescEncodingContainingExtension(typeName string, extNum int32, sentFileDescriptors map[string]bool) ([][]byte, error) {
+	st, err := typeForName(typeName)
+	if err != nil {
+		return nil, err
+	}
+	fd, err := fileDescContainingExtension(st, extNum)
+	if err != nil {
+		return nil, err
+	}
+	return fileDescWithDependencies(fd, sentFileDescriptors)
+}
+
+// allExtensionNumbersForTypeName returns all extension numbers for the given type.
+func (s *serverReflectionServer) allExtensionNumbersForTypeName(name string) ([]int32, error) {
+	st, err := typeForName(name)
+	if err != nil {
+		return nil, err
+	}
+	extNums, err := s.allExtensionNumbersForType(st)
+	if err != nil {
+		return nil, err
+	}
+	return extNums, nil
+}
+
+// ServerReflectionInfo is the reflection service handler.
+func (s *serverReflectionServer) ServerReflectionInfo(stream rpb.ServerReflection_ServerReflectionInfoServer) error {
+	sentFileDescriptors := make(map[string]bool)
+	for {
+		in, err := stream.Recv()
+		if err == io.EOF {
+			return nil
+		}
+		if err != nil {
+			return err
+		}
+
+		out := &rpb.ServerReflectionResponse{
+			ValidHost:       in.Host,
+			OriginalRequest: in,
+		}
+		switch req := in.MessageRequest.(type) {
+		case *rpb.ServerReflectionRequest_FileByFilename:
+			b, err := s.fileDescEncodingByFilename(req.FileByFilename, sentFileDescriptors)
+			if err != nil {
+				out.MessageResponse = &rpb.ServerReflectionResponse_ErrorResponse{
+					ErrorResponse: &rpb.ErrorResponse{
+						ErrorCode:    int32(codes.NotFound),
+						ErrorMessage: err.Error(),
+					},
+				}
+			} else {
+				out.MessageResponse = &rpb.ServerReflectionResponse_FileDescriptorResponse{
+					FileDescriptorResponse: &rpb.FileDescriptorResponse{FileDescriptorProto: b},
+				}
+			}
+		case *rpb.ServerReflectionRequest_FileContainingSymbol:
+			b, err := s.fileDescEncodingContainingSymbol(req.FileContainingSymbol, sentFileDescriptors)
+			if err != nil {
+				out.MessageResponse = &rpb.ServerReflectionResponse_ErrorResponse{
+					ErrorResponse: &rpb.ErrorResponse{
+						ErrorCode:    int32(codes.NotFound),
+						ErrorMessage: err.Error(),
+					},
+				}
+			} else {
+				out.MessageResponse = &rpb.ServerReflectionResponse_FileDescriptorResponse{
+					FileDescriptorResponse: &rpb.FileDescriptorResponse{FileDescriptorProto: b},
+				}
+			}
+		case *rpb.ServerReflectionRequest_FileContainingExtension:
+			typeName := req.FileContainingExtension.ContainingType
+			extNum := req.FileContainingExtension.ExtensionNumber
+			b, err := s.fileDescEncodingContainingExtension(typeName, extNum, sentFileDescriptors)
+			if err != nil {
+				out.MessageResponse = &rpb.ServerReflectionResponse_ErrorResponse{
+					ErrorResponse: &rpb.ErrorResponse{
+						ErrorCode:    int32(codes.NotFound),
+						ErrorMessage: err.Error(),
+					},
+				}
+			} else {
+				out.MessageResponse = &rpb.ServerReflectionResponse_FileDescriptorResponse{
+					FileDescriptorResponse: &rpb.FileDescriptorResponse{FileDescriptorProto: b},
+				}
+			}
+		case *rpb.ServerReflectionRequest_AllExtensionNumbersOfType:
+			extNums, err := s.allExtensionNumbersForTypeName(req.AllExtensionNumbersOfType)
+			if err != nil {
+				out.MessageResponse = &rpb.ServerReflectionResponse_ErrorResponse{
+					ErrorResponse: &rpb.ErrorResponse{
+						ErrorCode:    int32(codes.NotFound),
+						ErrorMessage: err.Error(),
+					},
+				}
+			} else {
+				out.MessageResponse = &rpb.ServerReflectionResponse_AllExtensionNumbersResponse{
+					AllExtensionNumbersResponse: &rpb.ExtensionNumberResponse{
+						BaseTypeName:    req.AllExtensionNumbersOfType,
+						ExtensionNumber: extNums,
+					},
+				}
+			}
+		case *rpb.ServerReflectionRequest_ListServices:
+			svcNames, _ := s.getSymbols()
+			serviceResponses := make([]*rpb.ServiceResponse, len(svcNames))
+			for i, n := range svcNames {
+				serviceResponses[i] = &rpb.ServiceResponse{
+					Name: n,
+				}
+			}
+			out.MessageResponse = &rpb.ServerReflectionResponse_ListServicesResponse{
+				ListServicesResponse: &rpb.ListServiceResponse{
+					Service: serviceResponses,
+				},
+			}
+		default:
+			return status.Errorf(codes.InvalidArgument, "invalid MessageRequest: %v", in.MessageRequest)
+		}
+
+		if err := stream.Send(out); err != nil {
+			return err
+		}
+	}
+}

vendor/google.golang.org/protobuf/types/known/structpb/struct.pb.go

@@ -0,0 +1,810 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: google/protobuf/struct.proto
+
+// Package structpb contains generated types for google/protobuf/struct.proto.
+//
+// The messages (i.e., Value, Struct, and ListValue) defined in struct.proto are
+// used to represent arbitrary JSON. The Value message represents a JSON value,
+// the Struct message represents a JSON object, and the ListValue message
+// represents a JSON array. See https://json.org for more information.
+//
+// The Value, Struct, and ListValue types have generated MarshalJSON and
+// UnmarshalJSON methods such that they serialize JSON equivalent to what the
+// messages themselves represent. Use of these types with the
+// "google.golang.org/protobuf/encoding/protojson" package
+// ensures that they will be serialized as their JSON equivalent.
+//
+//
+// Conversion to and from a Go interface
+//
+// The standard Go "encoding/json" package has functionality to serialize
+// arbitrary types to a large degree. The Value.AsInterface, Struct.AsMap, and
+// ListValue.AsSlice methods can convert the protobuf message representation into
+// a form represented by interface{}, map[string]interface{}, and []interface{}.
+// This form can be used with other packages that operate on such data structures
+// and also directly with the standard json package.
+//
+// In order to convert the interface{}, map[string]interface{}, and []interface{}
+// forms back as Value, Struct, and ListValue messages, use the NewStruct,
+// NewList, and NewValue constructor functions.
+//
+//
+// Example usage
+//
+// Consider the following example JSON object:
+//
+//	{
+//		"firstName": "John",
+//		"lastName": "Smith",
+//		"isAlive": true,
+//		"age": 27,
+//		"address": {
+//			"streetAddress": "21 2nd Street",
+//			"city": "New York",
+//			"state": "NY",
+//			"postalCode": "10021-3100"
+//		},
+//		"phoneNumbers": [
+//			{
+//				"type": "home",
+//				"number": "212 555-1234"
+//			},
+//			{
+//				"type": "office",
+//				"number": "646 555-4567"
+//			}
+//		],
+//		"children": [],
+//		"spouse": null
+//	}
+//
+// To construct a Value message representing the above JSON object:
+//
+//	m, err := structpb.NewValue(map[string]interface{}{
+//		"firstName": "John",
+//		"lastName":  "Smith",
+//		"isAlive":   true,
+//		"age":       27,
+//		"address": map[string]interface{}{
+//			"streetAddress": "21 2nd Street",
+//			"city":          "New York",
+//			"state":         "NY",
+//			"postalCode":    "10021-3100",
+//		},
+//		"phoneNumbers": []interface{}{
+//			map[string]interface{}{
+//				"type":   "home",
+//				"number": "212 555-1234",
+//			},
+//			map[string]interface{}{
+//				"type":   "office",
+//				"number": "646 555-4567",
+//			},
+//		},
+//		"children": []interface{}{},
+//		"spouse":   nil,
+//	})
+//	if err != nil {
+//		... // handle error
+//	}
+//	... // make use of m as a *structpb.Value
+//
+package structpb
+
+import (
+	base64 "encoding/base64"
+	protojson "google.golang.org/protobuf/encoding/protojson"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	math "math"
+	reflect "reflect"
+	sync "sync"
+	utf8 "unicode/utf8"
+)
+
+// `NullValue` is a singleton enumeration to represent the null value for the
+// `Value` type union.
+//
+//  The JSON representation for `NullValue` is JSON `null`.
+type NullValue int32
+
+const (
+	// Null value.
+	NullValue_NULL_VALUE NullValue = 0
+)
+
+// Enum value maps for NullValue.
+var (
+	NullValue_name = map[int32]string{
+		0: "NULL_VALUE",
+	}
+	NullValue_value = map[string]int32{
+		"NULL_VALUE": 0,
+	}
+)
+
+func (x NullValue) Enum() *NullValue {
+	p := new(NullValue)
+	*p = x
+	return p
+}
+
+func (x NullValue) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (NullValue) Descriptor() protoreflect.EnumDescriptor {
+	return file_google_protobuf_struct_proto_enumTypes[0].Descriptor()
+}
+
+func (NullValue) Type() protoreflect.EnumType {
+	return &file_google_protobuf_struct_proto_enumTypes[0]
+}
+
+func (x NullValue) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use NullValue.Descriptor instead.
+func (NullValue) EnumDescriptor() ([]byte, []int) {
+	return file_google_protobuf_struct_proto_rawDescGZIP(), []int{0}
+}
+
+// `Struct` represents a structured data value, consisting of fields
+// which map to dynamically typed values. In some languages, `Struct`
+// might be supported by a native representation. For example, in
+// scripting languages like JS a struct is represented as an
+// object. The details of that representation are described together
+// with the proto support for the language.
+//
+// The JSON representation for `Struct` is JSON object.
+type Struct struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Unordered map of dynamically typed values.
+	Fields map[string]*Value `protobuf:"bytes,1,rep,name=fields,proto3" json:"fields,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+}
+
+// NewStruct constructs a Struct from a general-purpose Go map.
+// The map keys must be valid UTF-8.
+// The map values are converted using NewValue.
+func NewStruct(v map[string]interface{}) (*Struct, error) {
+	x := &Struct{Fields: make(map[string]*Value, len(v))}
+	for k, v := range v {
+		if !utf8.ValidString(k) {
+			return nil, protoimpl.X.NewError("invalid UTF-8 in string: %q", k)
+		}
+		var err error
+		x.Fields[k], err = NewValue(v)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return x, nil
+}
+
+// AsMap converts x to a general-purpose Go map.
+// The map values are converted by calling Value.AsInterface.
+func (x *Struct) AsMap() map[string]interface{} {
+	vs := make(map[string]interface{})
+	for k, v := range x.GetFields() {
+		vs[k] = v.AsInterface()
+	}
+	return vs
+}
+
+func (x *Struct) MarshalJSON() ([]byte, error) {
+	return protojson.Marshal(x)
+}
+
+func (x *Struct) UnmarshalJSON(b []byte) error {
+	return protojson.Unmarshal(b, x)
+}
+
+func (x *Struct) Reset() {
+	*x = Struct{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_google_protobuf_struct_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Struct) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Struct) ProtoMessage() {}
+
+func (x *Struct) ProtoReflect() protoreflect.Message {
+	mi := &file_google_protobuf_struct_proto_msgTypes[0]
+	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 Struct.ProtoReflect.Descriptor instead.
+func (*Struct) Descriptor() ([]byte, []int) {
+	return file_google_protobuf_struct_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Struct) GetFields() map[string]*Value {
+	if x != nil {
+		return x.Fields
+	}
+	return nil
+}
+
+// `Value` represents a dynamically typed value which can be either
+// null, a number, a string, a boolean, a recursive struct value, or a
+// list of values. A producer of value is expected to set one of that
+// variants, absence of any variant indicates an error.
+//
+// The JSON representation for `Value` is JSON value.
+type Value struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The kind of value.
+	//
+	// Types that are assignable to Kind:
+	//	*Value_NullValue
+	//	*Value_NumberValue
+	//	*Value_StringValue
+	//	*Value_BoolValue
+	//	*Value_StructValue
+	//	*Value_ListValue
+	Kind isValue_Kind `protobuf_oneof:"kind"`
+}
+
+// NewValue constructs a Value from a general-purpose Go interface.
+//
+//	╔════════════════════════╤════════════════════════════════════════════╗
+//	║ Go type                │ Conversion                                 ║
+//	╠════════════════════════╪════════════════════════════════════════════╣
+//	║ nil                    │ stored as NullValue                        ║
+//	║ bool                   │ stored as BoolValue                        ║
+//	║ int, int32, int64      │ stored as NumberValue                      ║
+//	║ uint, uint32, uint64   │ stored as NumberValue                      ║
+//	║ float32, float64       │ stored as NumberValue                      ║
+//	║ string                 │ stored as StringValue; must be valid UTF-8 ║
+//	║ []byte                 │ stored as StringValue; base64-encoded      ║
+//	║ map[string]interface{} │ stored as StructValue                      ║
+//	║ []interface{}          │ stored as ListValue                        ║
+//	╚════════════════════════╧════════════════════════════════════════════╝
+//
+// When converting an int64 or uint64 to a NumberValue, numeric precision loss
+// is possible since they are stored as a float64.
+func NewValue(v interface{}) (*Value, error) {
+	switch v := v.(type) {
+	case nil:
+		return NewNullValue(), nil
+	case bool:
+		return NewBoolValue(v), nil
+	case int:
+		return NewNumberValue(float64(v)), nil
+	case int32:
+		return NewNumberValue(float64(v)), nil
+	case int64:
+		return NewNumberValue(float64(v)), nil
+	case uint:
+		return NewNumberValue(float64(v)), nil
+	case uint32:
+		return NewNumberValue(float64(v)), nil
+	case uint64:
+		return NewNumberValue(float64(v)), nil
+	case float32:
+		return NewNumberValue(float64(v)), nil
+	case float64:
+		return NewNumberValue(float64(v)), nil
+	case string:
+		if !utf8.ValidString(v) {
+			return nil, protoimpl.X.NewError("invalid UTF-8 in string: %q", v)
+		}
+		return NewStringValue(v), nil
+	case []byte:
+		s := base64.StdEncoding.EncodeToString(v)
+		return NewStringValue(s), nil
+	case map[string]interface{}:
+		v2, err := NewStruct(v)
+		if err != nil {
+			return nil, err
+		}
+		return NewStructValue(v2), nil
+	case []interface{}:
+		v2, err := NewList(v)
+		if err != nil {
+			return nil, err
+		}
+		return NewListValue(v2), nil
+	default:
+		return nil, protoimpl.X.NewError("invalid type: %T", v)
+	}
+}
+
+// NewNullValue constructs a new null Value.
+func NewNullValue() *Value {
+	return &Value{Kind: &Value_NullValue{NullValue: NullValue_NULL_VALUE}}
+}
+
+// NewBoolValue constructs a new boolean Value.
+func NewBoolValue(v bool) *Value {
+	return &Value{Kind: &Value_BoolValue{BoolValue: v}}
+}
+
+// NewNumberValue constructs a new number Value.
+func NewNumberValue(v float64) *Value {
+	return &Value{Kind: &Value_NumberValue{NumberValue: v}}
+}
+
+// NewStringValue constructs a new string Value.
+func NewStringValue(v string) *Value {
+	return &Value{Kind: &Value_StringValue{StringValue: v}}
+}
+
+// NewStructValue constructs a new struct Value.
+func NewStructValue(v *Struct) *Value {
+	return &Value{Kind: &Value_StructValue{StructValue: v}}
+}
+
+// NewListValue constructs a new list Value.
+func NewListValue(v *ListValue) *Value {
+	return &Value{Kind: &Value_ListValue{ListValue: v}}
+}
+
+// AsInterface converts x to a general-purpose Go interface.
+//
+// Calling Value.MarshalJSON and "encoding/json".Marshal on this output produce
+// semantically equivalent JSON (assuming no errors occur).
+//
+// Floating-point values (i.e., "NaN", "Infinity", and "-Infinity") are
+// converted as strings to remain compatible with MarshalJSON.
+func (x *Value) AsInterface() interface{} {
+	switch v := x.GetKind().(type) {
+	case *Value_NumberValue:
+		if v != nil {
+			switch {
+			case math.IsNaN(v.NumberValue):
+				return "NaN"
+			case math.IsInf(v.NumberValue, +1):
+				return "Infinity"
+			case math.IsInf(v.NumberValue, -1):
+				return "-Infinity"
+			default:
+				return v.NumberValue
+			}
+		}
+	case *Value_StringValue:
+		if v != nil {
+			return v.StringValue
+		}
+	case *Value_BoolValue:
+		if v != nil {
+			return v.BoolValue
+		}
+	case *Value_StructValue:
+		if v != nil {
+			return v.StructValue.AsMap()
+		}
+	case *Value_ListValue:
+		if v != nil {
+			return v.ListValue.AsSlice()
+		}
+	}
+	return nil
+}
+
+func (x *Value) MarshalJSON() ([]byte, error) {
+	return protojson.Marshal(x)
+}
+
+func (x *Value) UnmarshalJSON(b []byte) error {
+	return protojson.Unmarshal(b, x)
+}
+
+func (x *Value) Reset() {
+	*x = Value{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_google_protobuf_struct_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Value) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Value) ProtoMessage() {}
+
+func (x *Value) ProtoReflect() protoreflect.Message {
+	mi := &file_google_protobuf_struct_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 Value.ProtoReflect.Descriptor instead.
+func (*Value) Descriptor() ([]byte, []int) {
+	return file_google_protobuf_struct_proto_rawDescGZIP(), []int{1}
+}
+
+func (m *Value) GetKind() isValue_Kind {
+	if m != nil {
+		return m.Kind
+	}
+	return nil
+}
+
+func (x *Value) GetNullValue() NullValue {
+	if x, ok := x.GetKind().(*Value_NullValue); ok {
+		return x.NullValue
+	}
+	return NullValue_NULL_VALUE
+}
+
+func (x *Value) GetNumberValue() float64 {
+	if x, ok := x.GetKind().(*Value_NumberValue); ok {
+		return x.NumberValue
+	}
+	return 0
+}
+
+func (x *Value) GetStringValue() string {
+	if x, ok := x.GetKind().(*Value_StringValue); ok {
+		return x.StringValue
+	}
+	return ""
+}
+
+func (x *Value) GetBoolValue() bool {
+	if x, ok := x.GetKind().(*Value_BoolValue); ok {
+		return x.BoolValue
+	}
+	return false
+}
+
+func (x *Value) GetStructValue() *Struct {
+	if x, ok := x.GetKind().(*Value_StructValue); ok {
+		return x.StructValue
+	}
+	return nil
+}
+
+func (x *Value) GetListValue() *ListValue {
+	if x, ok := x.GetKind().(*Value_ListValue); ok {
+		return x.ListValue
+	}
+	return nil
+}
+
+type isValue_Kind interface {
+	isValue_Kind()
+}
+
+type Value_NullValue struct {
+	// Represents a null value.
+	NullValue NullValue `protobuf:"varint,1,opt,name=null_value,json=nullValue,proto3,enum=google.protobuf.NullValue,oneof"`
+}
+
+type Value_NumberValue struct {
+	// Represents a double value.
+	NumberValue float64 `protobuf:"fixed64,2,opt,name=number_value,json=numberValue,proto3,oneof"`
+}
+
+type Value_StringValue struct {
+	// Represents a string value.
+	StringValue string `protobuf:"bytes,3,opt,name=string_value,json=stringValue,proto3,oneof"`
+}
+
+type Value_BoolValue struct {
+	// Represents a boolean value.
+	BoolValue bool `protobuf:"varint,4,opt,name=bool_value,json=boolValue,proto3,oneof"`
+}
+
+type Value_StructValue struct {
+	// Represents a structured value.
+	StructValue *Struct `protobuf:"bytes,5,opt,name=struct_value,json=structValue,proto3,oneof"`
+}
+
+type Value_ListValue struct {
+	// Represents a repeated `Value`.
+	ListValue *ListValue `protobuf:"bytes,6,opt,name=list_value,json=listValue,proto3,oneof"`
+}
+
+func (*Value_NullValue) isValue_Kind() {}
+
+func (*Value_NumberValue) isValue_Kind() {}
+
+func (*Value_StringValue) isValue_Kind() {}
+
+func (*Value_BoolValue) isValue_Kind() {}
+
+func (*Value_StructValue) isValue_Kind() {}
+
+func (*Value_ListValue) isValue_Kind() {}
+
+// `ListValue` is a wrapper around a repeated field of values.
+//
+// The JSON representation for `ListValue` is JSON array.
+type ListValue struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Repeated field of dynamically typed values.
+	Values []*Value `protobuf:"bytes,1,rep,name=values,proto3" json:"values,omitempty"`
+}
+
+// NewList constructs a ListValue from a general-purpose Go slice.
+// The slice elements are converted using NewValue.
+func NewList(v []interface{}) (*ListValue, error) {
+	x := &ListValue{Values: make([]*Value, len(v))}
+	for i, v := range v {
+		var err error
+		x.Values[i], err = NewValue(v)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return x, nil
+}
+
+// AsSlice converts x to a general-purpose Go slice.
+// The slice elements are converted by calling Value.AsInterface.
+func (x *ListValue) AsSlice() []interface{} {
+	vs := make([]interface{}, len(x.GetValues()))
+	for i, v := range x.GetValues() {
+		vs[i] = v.AsInterface()
+	}
+	return vs
+}
+
+func (x *ListValue) MarshalJSON() ([]byte, error) {
+	return protojson.Marshal(x)
+}
+
+func (x *ListValue) UnmarshalJSON(b []byte) error {
+	return protojson.Unmarshal(b, x)
+}
+
+func (x *ListValue) Reset() {
+	*x = ListValue{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_google_protobuf_struct_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ListValue) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ListValue) ProtoMessage() {}
+
+func (x *ListValue) ProtoReflect() protoreflect.Message {
+	mi := &file_google_protobuf_struct_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 ListValue.ProtoReflect.Descriptor instead.
+func (*ListValue) Descriptor() ([]byte, []int) {
+	return file_google_protobuf_struct_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *ListValue) GetValues() []*Value {
+	if x != nil {
+		return x.Values
+	}
+	return nil
+}
+
+var File_google_protobuf_struct_proto protoreflect.FileDescriptor
+
+var file_google_protobuf_struct_proto_rawDesc = []byte{
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+	0x6f, 0x33,
+}
+
+var (
+	file_google_protobuf_struct_proto_rawDescOnce sync.Once
+	file_google_protobuf_struct_proto_rawDescData = file_google_protobuf_struct_proto_rawDesc
+)
+
+func file_google_protobuf_struct_proto_rawDescGZIP() []byte {
+	file_google_protobuf_struct_proto_rawDescOnce.Do(func() {
+		file_google_protobuf_struct_proto_rawDescData = protoimpl.X.CompressGZIP(file_google_protobuf_struct_proto_rawDescData)
+	})
+	return file_google_protobuf_struct_proto_rawDescData
+}
+
+var file_google_protobuf_struct_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_google_protobuf_struct_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
+var file_google_protobuf_struct_proto_goTypes = []interface{}{
+	(NullValue)(0),    // 0: google.protobuf.NullValue
+	(*Struct)(nil),    // 1: google.protobuf.Struct
+	(*Value)(nil),     // 2: google.protobuf.Value
+	(*ListValue)(nil), // 3: google.protobuf.ListValue
+	nil,               // 4: google.protobuf.Struct.FieldsEntry
+}
+var file_google_protobuf_struct_proto_depIdxs = []int32{
+	4, // 0: google.protobuf.Struct.fields:type_name -> google.protobuf.Struct.FieldsEntry
+	0, // 1: google.protobuf.Value.null_value:type_name -> google.protobuf.NullValue
+	1, // 2: google.protobuf.Value.struct_value:type_name -> google.protobuf.Struct
+	3, // 3: google.protobuf.Value.list_value:type_name -> google.protobuf.ListValue
+	2, // 4: google.protobuf.ListValue.values:type_name -> google.protobuf.Value
+	2, // 5: google.protobuf.Struct.FieldsEntry.value:type_name -> google.protobuf.Value
+	6, // [6:6] is the sub-list for method output_type
+	6, // [6:6] is the sub-list for method input_type
+	6, // [6:6] is the sub-list for extension type_name
+	6, // [6:6] is the sub-list for extension extendee
+	0, // [0:6] is the sub-list for field type_name
+}
+
+func init() { file_google_protobuf_struct_proto_init() }
+func file_google_protobuf_struct_proto_init() {
+	if File_google_protobuf_struct_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_google_protobuf_struct_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Struct); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_google_protobuf_struct_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Value); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_google_protobuf_struct_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ListValue); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	file_google_protobuf_struct_proto_msgTypes[1].OneofWrappers = []interface{}{
+		(*Value_NullValue)(nil),
+		(*Value_NumberValue)(nil),
+		(*Value_StringValue)(nil),
+		(*Value_BoolValue)(nil),
+		(*Value_StructValue)(nil),
+		(*Value_ListValue)(nil),
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_google_protobuf_struct_proto_rawDesc,
+			NumEnums:      1,
+			NumMessages:   4,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_google_protobuf_struct_proto_goTypes,
+		DependencyIndexes: file_google_protobuf_struct_proto_depIdxs,
+		EnumInfos:         file_google_protobuf_struct_proto_enumTypes,
+		MessageInfos:      file_google_protobuf_struct_proto_msgTypes,
+	}.Build()
+	File_google_protobuf_struct_proto = out.File
+	file_google_protobuf_struct_proto_rawDesc = nil
+	file_google_protobuf_struct_proto_goTypes = nil
+	file_google_protobuf_struct_proto_depIdxs = nil
+}

vendor/modules.txt

@@ -84,6 +84,9 @@ github.com/docker/libnetwork/types
 # github.com/evanphx/json-patch v4.11.0+incompatible
 ## explicit
 github.com/evanphx/json-patch
+# github.com/fatih/structs v1.1.0
+## explicit
+github.com/fatih/structs
 # github.com/fsnotify/fsnotify v1.5.1
 ## explicit; go 1.13
 github.com/fsnotify/fsnotify
@@ -108,6 +111,7 @@ github.com/golang/mock/gomock
 # github.com/golang/protobuf v1.5.2
 ## explicit; go 1.9
 github.com/golang/protobuf/proto
+github.com/golang/protobuf/protoc-gen-go/descriptor
 github.com/golang/protobuf/ptypes
 github.com/golang/protobuf/ptypes/any
 github.com/golang/protobuf/ptypes/duration
@@ -434,6 +438,8 @@ google.golang.org/grpc/internal/transport/networktype
 google.golang.org/grpc/keepalive
 google.golang.org/grpc/metadata
 google.golang.org/grpc/peer
+google.golang.org/grpc/reflection
+google.golang.org/grpc/reflection/grpc_reflection_v1alpha
 google.golang.org/grpc/resolver
 google.golang.org/grpc/serviceconfig
 google.golang.org/grpc/stats
@@ -472,6 +478,7 @@ google.golang.org/protobuf/runtime/protoimpl
 google.golang.org/protobuf/types/descriptorpb
 google.golang.org/protobuf/types/known/anypb
 google.golang.org/protobuf/types/known/durationpb
+google.golang.org/protobuf/types/known/structpb
 google.golang.org/protobuf/types/known/timestamppb
 # gopkg.in/fsnotify.v1 v1.4.7
 ## explicit