Runtime logs (#1447)

* Runtime logs

* Slightly broken

* Pushing for diff

* Log trailing works locally

* LogsOptions

* Comments and streamcount support for local logs

* Adding kubernetes logs

* Fixing k8s logs

* K8s fixes

* StreamCount is now nuked

* PR comments

* PR comments again

* Fix typo

runtime/service/proto/runtime.pb.go

@@ -1,15 +1,11 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
-// source: runtime/service/proto/runtime.proto
+// source: micro/go-micro/runtime/service/proto/runtime.proto
 
 package go_micro_runtime
 
 import (
-	context "context"
 	fmt "fmt"
 	proto "github.com/golang/protobuf/proto"
-	grpc "google.golang.org/grpc"
-	codes "google.golang.org/grpc/codes"
-	status "google.golang.org/grpc/status"
 	math "math"
 )
 
@@ -42,7 +38,7 @@ func (m *Service) Reset()         { *m = Service{} }
 func (m *Service) String() string { return proto.CompactTextString(m) }
 func (*Service) ProtoMessage()    {}
 func (*Service) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2434d8152598889b, []int{0}
+	return fileDescriptor_4bc91a8efec81434, []int{0}
 }
 
 func (m *Service) XXX_Unmarshal(b []byte) error {
@@ -105,7 +101,7 @@ func (m *Event) Reset()         { *m = Event{} }
 func (m *Event) String() string { return proto.CompactTextString(m) }
 func (*Event) ProtoMessage()    {}
 func (*Event) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2434d8152598889b, []int{1}
+	return fileDescriptor_4bc91a8efec81434, []int{1}
 }
 
 func (m *Event) XXX_Unmarshal(b []byte) error {
@@ -176,7 +172,7 @@ func (m *CreateOptions) Reset()         { *m = CreateOptions{} }
 func (m *CreateOptions) String() string { return proto.CompactTextString(m) }
 func (*CreateOptions) ProtoMessage()    {}
 func (*CreateOptions) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2434d8152598889b, []int{2}
+	return fileDescriptor_4bc91a8efec81434, []int{2}
 }
 
 func (m *CreateOptions) XXX_Unmarshal(b []byte) error {
@@ -251,7 +247,7 @@ func (m *CreateRequest) Reset()         { *m = CreateRequest{} }
 func (m *CreateRequest) String() string { return proto.CompactTextString(m) }
 func (*CreateRequest) ProtoMessage()    {}
 func (*CreateRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2434d8152598889b, []int{3}
+	return fileDescriptor_4bc91a8efec81434, []int{3}
 }
 
 func (m *CreateRequest) XXX_Unmarshal(b []byte) error {
@@ -296,7 +292,7 @@ func (m *CreateResponse) Reset()         { *m = CreateResponse{} }
 func (m *CreateResponse) String() string { return proto.CompactTextString(m) }
 func (*CreateResponse) ProtoMessage()    {}
 func (*CreateResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2434d8152598889b, []int{4}
+	return fileDescriptor_4bc91a8efec81434, []int{4}
 }
 
 func (m *CreateResponse) XXX_Unmarshal(b []byte) error {
@@ -333,7 +329,7 @@ func (m *ReadOptions) Reset()         { *m = ReadOptions{} }
 func (m *ReadOptions) String() string { return proto.CompactTextString(m) }
 func (*ReadOptions) ProtoMessage()    {}
 func (*ReadOptions) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2434d8152598889b, []int{5}
+	return fileDescriptor_4bc91a8efec81434, []int{5}
 }
 
 func (m *ReadOptions) XXX_Unmarshal(b []byte) error {
@@ -386,7 +382,7 @@ func (m *ReadRequest) Reset()         { *m = ReadRequest{} }
 func (m *ReadRequest) String() string { return proto.CompactTextString(m) }
 func (*ReadRequest) ProtoMessage()    {}
 func (*ReadRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2434d8152598889b, []int{6}
+	return fileDescriptor_4bc91a8efec81434, []int{6}
 }
 
 func (m *ReadRequest) XXX_Unmarshal(b []byte) error {
@@ -425,7 +421,7 @@ func (m *ReadResponse) Reset()         { *m = ReadResponse{} }
 func (m *ReadResponse) String() string { return proto.CompactTextString(m) }
 func (*ReadResponse) ProtoMessage()    {}
 func (*ReadResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2434d8152598889b, []int{7}
+	return fileDescriptor_4bc91a8efec81434, []int{7}
 }
 
 func (m *ReadResponse) XXX_Unmarshal(b []byte) error {
@@ -464,7 +460,7 @@ func (m *DeleteRequest) Reset()         { *m = DeleteRequest{} }
 func (m *DeleteRequest) String() string { return proto.CompactTextString(m) }
 func (*DeleteRequest) ProtoMessage()    {}
 func (*DeleteRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2434d8152598889b, []int{8}
+	return fileDescriptor_4bc91a8efec81434, []int{8}
 }
 
 func (m *DeleteRequest) XXX_Unmarshal(b []byte) error {
@@ -502,7 +498,7 @@ func (m *DeleteResponse) Reset()         { *m = DeleteResponse{} }
 func (m *DeleteResponse) String() string { return proto.CompactTextString(m) }
 func (*DeleteResponse) ProtoMessage()    {}
 func (*DeleteResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2434d8152598889b, []int{9}
+	return fileDescriptor_4bc91a8efec81434, []int{9}
 }
 
 func (m *DeleteResponse) XXX_Unmarshal(b []byte) error {
@@ -534,7 +530,7 @@ func (m *UpdateRequest) Reset()         { *m = UpdateRequest{} }
 func (m *UpdateRequest) String() string { return proto.CompactTextString(m) }
 func (*UpdateRequest) ProtoMessage()    {}
 func (*UpdateRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2434d8152598889b, []int{10}
+	return fileDescriptor_4bc91a8efec81434, []int{10}
 }
 
 func (m *UpdateRequest) XXX_Unmarshal(b []byte) error {
@@ -572,7 +568,7 @@ func (m *UpdateResponse) Reset()         { *m = UpdateResponse{} }
 func (m *UpdateResponse) String() string { return proto.CompactTextString(m) }
 func (*UpdateResponse) ProtoMessage()    {}
 func (*UpdateResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2434d8152598889b, []int{11}
+	return fileDescriptor_4bc91a8efec81434, []int{11}
 }
 
 func (m *UpdateResponse) XXX_Unmarshal(b []byte) error {
@@ -603,7 +599,7 @@ func (m *ListRequest) Reset()         { *m = ListRequest{} }
 func (m *ListRequest) String() string { return proto.CompactTextString(m) }
 func (*ListRequest) ProtoMessage()    {}
 func (*ListRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2434d8152598889b, []int{12}
+	return fileDescriptor_4bc91a8efec81434, []int{12}
 }
 
 func (m *ListRequest) XXX_Unmarshal(b []byte) error {
@@ -635,7 +631,7 @@ func (m *ListResponse) Reset()         { *m = ListResponse{} }
 func (m *ListResponse) String() string { return proto.CompactTextString(m) }
 func (*ListResponse) ProtoMessage()    {}
 func (*ListResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2434d8152598889b, []int{13}
+	return fileDescriptor_4bc91a8efec81434, []int{13}
 }
 
 func (m *ListResponse) XXX_Unmarshal(b []byte) error {
@@ -663,6 +659,133 @@ func (m *ListResponse) GetServices() []*Service {
 	return nil
 }
 
+type LogsRequest struct {
+	// service to request logs for
+	Service string `protobuf:"bytes,1,opt,name=service,proto3" json:"service,omitempty"`
+	// stream records continuously
+	Stream bool `protobuf:"varint,2,opt,name=stream,proto3" json:"stream,omitempty"`
+	// count of records to request
+	Count int64 `protobuf:"varint,3,opt,name=count,proto3" json:"count,omitempty"`
+	// relative time in seconds
+	// before the current time
+	// from which to show logs
+	Since                int64    `protobuf:"varint,4,opt,name=since,proto3" json:"since,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *LogsRequest) Reset()         { *m = LogsRequest{} }
+func (m *LogsRequest) String() string { return proto.CompactTextString(m) }
+func (*LogsRequest) ProtoMessage()    {}
+func (*LogsRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_4bc91a8efec81434, []int{14}
+}
+
+func (m *LogsRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_LogsRequest.Unmarshal(m, b)
+}
+func (m *LogsRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_LogsRequest.Marshal(b, m, deterministic)
+}
+func (m *LogsRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_LogsRequest.Merge(m, src)
+}
+func (m *LogsRequest) XXX_Size() int {
+	return xxx_messageInfo_LogsRequest.Size(m)
+}
+func (m *LogsRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_LogsRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_LogsRequest proto.InternalMessageInfo
+
+func (m *LogsRequest) GetService() string {
+	if m != nil {
+		return m.Service
+	}
+	return ""
+}
+
+func (m *LogsRequest) GetStream() bool {
+	if m != nil {
+		return m.Stream
+	}
+	return false
+}
+
+func (m *LogsRequest) GetCount() int64 {
+	if m != nil {
+		return m.Count
+	}
+	return 0
+}
+
+func (m *LogsRequest) GetSince() int64 {
+	if m != nil {
+		return m.Since
+	}
+	return 0
+}
+
+type LogRecord struct {
+	// timestamp of log record
+	Timestamp int64 `protobuf:"varint,1,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
+	// record metadata
+	Metadata map[string]string `protobuf:"bytes,2,rep,name=metadata,proto3" json:"metadata,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	// message
+	Message              string   `protobuf:"bytes,3,opt,name=message,proto3" json:"message,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *LogRecord) Reset()         { *m = LogRecord{} }
+func (m *LogRecord) String() string { return proto.CompactTextString(m) }
+func (*LogRecord) ProtoMessage()    {}
+func (*LogRecord) Descriptor() ([]byte, []int) {
+	return fileDescriptor_4bc91a8efec81434, []int{15}
+}
+
+func (m *LogRecord) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_LogRecord.Unmarshal(m, b)
+}
+func (m *LogRecord) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_LogRecord.Marshal(b, m, deterministic)
+}
+func (m *LogRecord) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_LogRecord.Merge(m, src)
+}
+func (m *LogRecord) XXX_Size() int {
+	return xxx_messageInfo_LogRecord.Size(m)
+}
+func (m *LogRecord) XXX_DiscardUnknown() {
+	xxx_messageInfo_LogRecord.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_LogRecord proto.InternalMessageInfo
+
+func (m *LogRecord) GetTimestamp() int64 {
+	if m != nil {
+		return m.Timestamp
+	}
+	return 0
+}
+
+func (m *LogRecord) GetMetadata() map[string]string {
+	if m != nil {
+		return m.Metadata
+	}
+	return nil
+}
+
+func (m *LogRecord) GetMessage() string {
+	if m != nil {
+		return m.Message
+	}
+	return ""
+}
+
 func init() {
 	proto.RegisterType((*Service)(nil), "go.micro.runtime.Service")
 	proto.RegisterMapType((map[string]string)(nil), "go.micro.runtime.Service.MetadataEntry")
@@ -679,271 +802,57 @@ func init() {
 	proto.RegisterType((*UpdateResponse)(nil), "go.micro.runtime.UpdateResponse")
 	proto.RegisterType((*ListRequest)(nil), "go.micro.runtime.ListRequest")
 	proto.RegisterType((*ListResponse)(nil), "go.micro.runtime.ListResponse")
+	proto.RegisterType((*LogsRequest)(nil), "go.micro.runtime.LogsRequest")
+	proto.RegisterType((*LogRecord)(nil), "go.micro.runtime.LogRecord")
+	proto.RegisterMapType((map[string]string)(nil), "go.micro.runtime.LogRecord.MetadataEntry")
 }
 
 func init() {
-	proto.RegisterFile("runtime/service/proto/runtime.proto", fileDescriptor_2434d8152598889b)
+	proto.RegisterFile("micro/go-micro/runtime/service/proto/runtime.proto", fileDescriptor_4bc91a8efec81434)
 }
 
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-}
-
-// Reference imports to suppress errors if they are not otherwise used.
-var _ context.Context
-var _ grpc.ClientConn
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the grpc package it is being compiled against.
-const _ = grpc.SupportPackageIsVersion4
-
-// RuntimeClient is the client API for Runtime service.
-//
-// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
-type RuntimeClient interface {
-	Create(ctx context.Context, in *CreateRequest, opts ...grpc.CallOption) (*CreateResponse, error)
-	Read(ctx context.Context, in *ReadRequest, opts ...grpc.CallOption) (*ReadResponse, error)
-	Delete(ctx context.Context, in *DeleteRequest, opts ...grpc.CallOption) (*DeleteResponse, error)
-	Update(ctx context.Context, in *UpdateRequest, opts ...grpc.CallOption) (*UpdateResponse, error)
-	List(ctx context.Context, in *ListRequest, opts ...grpc.CallOption) (*ListResponse, error)
-}
-
-type runtimeClient struct {
-	cc *grpc.ClientConn
-}
-
-func NewRuntimeClient(cc *grpc.ClientConn) RuntimeClient {
-	return &runtimeClient{cc}
-}
-
-func (c *runtimeClient) Create(ctx context.Context, in *CreateRequest, opts ...grpc.CallOption) (*CreateResponse, error) {
-	out := new(CreateResponse)
-	err := c.cc.Invoke(ctx, "/go.micro.runtime.Runtime/Create", in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *runtimeClient) Read(ctx context.Context, in *ReadRequest, opts ...grpc.CallOption) (*ReadResponse, error) {
-	out := new(ReadResponse)
-	err := c.cc.Invoke(ctx, "/go.micro.runtime.Runtime/Read", in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *runtimeClient) Delete(ctx context.Context, in *DeleteRequest, opts ...grpc.CallOption) (*DeleteResponse, error) {
-	out := new(DeleteResponse)
-	err := c.cc.Invoke(ctx, "/go.micro.runtime.Runtime/Delete", in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *runtimeClient) Update(ctx context.Context, in *UpdateRequest, opts ...grpc.CallOption) (*UpdateResponse, error) {
-	out := new(UpdateResponse)
-	err := c.cc.Invoke(ctx, "/go.micro.runtime.Runtime/Update", in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *runtimeClient) List(ctx context.Context, in *ListRequest, opts ...grpc.CallOption) (*ListResponse, error) {
-	out := new(ListResponse)
-	err := c.cc.Invoke(ctx, "/go.micro.runtime.Runtime/List", in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-// RuntimeServer is the server API for Runtime service.
-type RuntimeServer interface {
-	Create(context.Context, *CreateRequest) (*CreateResponse, error)
-	Read(context.Context, *ReadRequest) (*ReadResponse, error)
-	Delete(context.Context, *DeleteRequest) (*DeleteResponse, error)
-	Update(context.Context, *UpdateRequest) (*UpdateResponse, error)
-	List(context.Context, *ListRequest) (*ListResponse, error)
-}
-
-// UnimplementedRuntimeServer can be embedded to have forward compatible implementations.
-type UnimplementedRuntimeServer struct {
-}
-
-func (*UnimplementedRuntimeServer) Create(ctx context.Context, req *CreateRequest) (*CreateResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method Create not implemented")
-}
-func (*UnimplementedRuntimeServer) Read(ctx context.Context, req *ReadRequest) (*ReadResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method Read not implemented")
-}
-func (*UnimplementedRuntimeServer) Delete(ctx context.Context, req *DeleteRequest) (*DeleteResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method Delete not implemented")
-}
-func (*UnimplementedRuntimeServer) Update(ctx context.Context, req *UpdateRequest) (*UpdateResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method Update not implemented")
-}
-func (*UnimplementedRuntimeServer) List(ctx context.Context, req *ListRequest) (*ListResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method List not implemented")
-}
-
-func RegisterRuntimeServer(s *grpc.Server, srv RuntimeServer) {
-	s.RegisterService(&_Runtime_serviceDesc, srv)
-}
-
-func _Runtime_Create_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(CreateRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(RuntimeServer).Create(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: "/go.micro.runtime.Runtime/Create",
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(RuntimeServer).Create(ctx, req.(*CreateRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _Runtime_Read_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(ReadRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(RuntimeServer).Read(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: "/go.micro.runtime.Runtime/Read",
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(RuntimeServer).Read(ctx, req.(*ReadRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _Runtime_Delete_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(DeleteRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(RuntimeServer).Delete(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: "/go.micro.runtime.Runtime/Delete",
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(RuntimeServer).Delete(ctx, req.(*DeleteRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _Runtime_Update_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(UpdateRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(RuntimeServer).Update(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: "/go.micro.runtime.Runtime/Update",
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(RuntimeServer).Update(ctx, req.(*UpdateRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _Runtime_List_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(ListRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(RuntimeServer).List(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: "/go.micro.runtime.Runtime/List",
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(RuntimeServer).List(ctx, req.(*ListRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-var _Runtime_serviceDesc = grpc.ServiceDesc{
-	ServiceName: "go.micro.runtime.Runtime",
-	HandlerType: (*RuntimeServer)(nil),
-	Methods: []grpc.MethodDesc{
-		{
-			MethodName: "Create",
-			Handler:    _Runtime_Create_Handler,
-		},
-		{
-			MethodName: "Read",
-			Handler:    _Runtime_Read_Handler,
-		},
-		{
-			MethodName: "Delete",
-			Handler:    _Runtime_Delete_Handler,
-		},
-		{
-			MethodName: "Update",
-			Handler:    _Runtime_Update_Handler,
-		},
-		{
-			MethodName: "List",
-			Handler:    _Runtime_List_Handler,
-		},
-	},
-	Streams:  []grpc.StreamDesc{},
-	Metadata: "runtime/service/proto/runtime.proto",
+var fileDescriptor_4bc91a8efec81434 = []byte{
+	// 663 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xa4, 0x55, 0xcb, 0x6e, 0xd3, 0x40,
+	0x14, 0xad, 0xe3, 0x3c, 0xda, 0x6b, 0x82, 0xaa, 0x51, 0x85, 0x4c, 0x79, 0x45, 0xde, 0x50, 0x16,
+	0xb8, 0x28, 0x15, 0xe2, 0xb5, 0x6c, 0x53, 0x36, 0x8d, 0x90, 0x8c, 0xfa, 0x01, 0x83, 0x73, 0x65,
+	0x59, 0xad, 0x3d, 0xc6, 0x33, 0x8e, 0x94, 0x15, 0xdf, 0xc0, 0x57, 0xb1, 0x85, 0x3f, 0x42, 0xf3,
+	0xf0, 0x2b, 0xb1, 0xbb, 0xc9, 0x6e, 0xee, 0xe4, 0xce, 0xf1, 0x39, 0x67, 0xce, 0x9d, 0xc0, 0x3c,
+	0x89, 0xc3, 0x9c, 0x9d, 0x47, 0xec, 0xad, 0x5e, 0xe4, 0x45, 0x2a, 0xe2, 0x04, 0xcf, 0x39, 0xe6,
+	0xeb, 0x38, 0xc4, 0xf3, 0x2c, 0x67, 0xa2, 0xda, 0xf5, 0x55, 0x45, 0x8e, 0x23, 0xe6, 0xab, 0x6e,
+	0xdf, 0xec, 0x7b, 0xff, 0x2c, 0x98, 0x7c, 0xd7, 0x27, 0x08, 0x81, 0x61, 0x4a, 0x13, 0x74, 0xad,
+	0x99, 0x75, 0x76, 0x14, 0xa8, 0x35, 0x71, 0x61, 0xb2, 0xc6, 0x9c, 0xc7, 0x2c, 0x75, 0x07, 0x6a,
+	0xbb, 0x2c, 0xc9, 0x13, 0x18, 0x73, 0x56, 0xe4, 0x21, 0xba, 0xb6, 0xfa, 0xc1, 0x54, 0xe4, 0x12,
+	0x0e, 0x13, 0x14, 0x74, 0x45, 0x05, 0x75, 0x87, 0x33, 0xfb, 0xcc, 0x99, 0xbf, 0xf6, 0xb7, 0x3f,
+	0xeb, 0x9b, 0x4f, 0xfa, 0x4b, 0xd3, 0xb9, 0x48, 0x45, 0xbe, 0x09, 0xaa, 0x83, 0xa7, 0x5f, 0x60,
+	0xda, 0xfa, 0x89, 0x1c, 0x83, 0x7d, 0x87, 0x1b, 0x43, 0x4d, 0x2e, 0xc9, 0x09, 0x8c, 0xd6, 0xf4,
+	0xbe, 0x40, 0xc3, 0x4b, 0x17, 0x9f, 0x07, 0x1f, 0x2d, 0x2f, 0x81, 0xd1, 0x62, 0x8d, 0xa9, 0x90,
+	0x82, 0xc4, 0x26, 0xab, 0x04, 0xc9, 0x35, 0x79, 0x0e, 0x47, 0x92, 0x01, 0x17, 0x34, 0xc9, 0xd4,
+	0x51, 0x3b, 0xa8, 0x37, 0xa4, 0x5c, 0xe3, 0x9f, 0x51, 0x55, 0x96, 0x4d, 0x23, 0x86, 0x2d, 0x23,
+	0xbc, 0xdf, 0x16, 0x4c, 0x2f, 0x73, 0xa4, 0x02, 0xbf, 0x65, 0x22, 0x66, 0x29, 0x97, 0xbd, 0x21,
+	0x4b, 0x12, 0x9a, 0xae, 0x5c, 0x6b, 0x66, 0xcb, 0x5e, 0x53, 0x4a, 0x46, 0x34, 0x8f, 0xb8, 0x3b,
+	0x50, 0xdb, 0x6a, 0x2d, 0xa5, 0x61, 0xba, 0x76, 0x6d, 0xb5, 0x25, 0x97, 0xd2, 0x5a, 0x56, 0x88,
+	0xac, 0x10, 0xe6, 0x53, 0xa6, 0xaa, 0xf4, 0x8c, 0x1a, 0x7a, 0x4e, 0x60, 0x14, 0x27, 0x34, 0x42,
+	0x77, 0xac, 0x6d, 0x50, 0x85, 0xf7, 0xab, 0xa4, 0x14, 0xe0, 0xcf, 0x02, 0xb9, 0x20, 0x17, 0xb5,
+	0x30, 0xe9, 0x86, 0x33, 0x7f, 0xda, 0x7b, 0x29, 0xb5, 0xe6, 0x4f, 0x30, 0x61, 0x5a, 0x92, 0x72,
+	0xca, 0x99, 0xbf, 0xda, 0x3d, 0xd4, 0x52, 0x1e, 0x94, 0xfd, 0xde, 0x31, 0x3c, 0x2e, 0x09, 0xf0,
+	0x8c, 0xa5, 0x1c, 0xbd, 0x5b, 0x70, 0x02, 0xa4, 0xab, 0x86, 0x47, 0x4d, 0x42, 0xdd, 0x4e, 0x6f,
+	0x45, 0xae, 0xd4, 0x6f, 0xd7, 0xfa, 0xbd, 0x6b, 0x0d, 0x5b, 0xea, 0xfc, 0x50, 0x53, 0xd6, 0x3a,
+	0x5f, 0xec, 0x52, 0x6e, 0xd0, 0xa8, 0x09, 0x2f, 0xe0, 0x91, 0xc6, 0xd1, 0x74, 0xc9, 0x7b, 0x38,
+	0x34, 0x84, 0xb8, 0xba, 0xc4, 0x07, 0x1d, 0xab, 0x5a, 0xbd, 0x2b, 0x98, 0x5e, 0xe1, 0x3d, 0xee,
+	0x67, 0xbc, 0x74, 0xaf, 0x44, 0x31, 0xee, 0x5d, 0xc1, 0xf4, 0x36, 0x5b, 0xd1, 0xfd, 0x71, 0x4b,
+	0x14, 0x83, 0x3b, 0x05, 0xe7, 0x26, 0xe6, 0xc2, 0xa0, 0x4a, 0x17, 0x74, 0xb9, 0x9f, 0x0b, 0x77,
+	0xe0, 0xdc, 0xb0, 0x88, 0x97, 0x5c, 0xfb, 0xef, 0x5a, 0x3e, 0x22, 0x22, 0x47, 0x9a, 0xa8, 0xab,
+	0x3e, 0x0c, 0x4c, 0x25, 0x53, 0x1d, 0xb2, 0x22, 0x15, 0xea, 0xaa, 0xed, 0x40, 0x17, 0x72, 0x97,
+	0xc7, 0x69, 0x88, 0x6a, 0x2c, 0xec, 0x40, 0x17, 0xde, 0x1f, 0x0b, 0x8e, 0x6e, 0x58, 0x14, 0x60,
+	0xc8, 0xf2, 0x55, 0x7b, 0xbe, 0xad, 0xed, 0xf9, 0x5e, 0x34, 0x1e, 0xa7, 0x81, 0xd2, 0xf3, 0x66,
+	0x57, 0x4f, 0x05, 0xd6, 0xf7, 0x3c, 0x49, 0x41, 0x09, 0x72, 0x2e, 0xc7, 0xce, 0x3c, 0x13, 0xa6,
+	0xdc, 0xeb, 0xe1, 0x9a, 0xff, 0xb5, 0x61, 0x12, 0x68, 0x12, 0x64, 0x09, 0x63, 0x3d, 0x40, 0xa4,
+	0x77, 0xe8, 0x8c, 0xbd, 0xa7, 0xb3, 0xfe, 0x06, 0x73, 0xcb, 0x07, 0xe4, 0x2b, 0x0c, 0x65, 0xbc,
+	0x49, 0xcf, 0x38, 0x94, 0x50, 0x2f, 0xfb, 0x7e, 0xae, 0x80, 0x96, 0x30, 0xd6, 0xd1, 0xec, 0xe2,
+	0xd5, 0x8a, 0x7e, 0x17, 0xaf, 0xad, 0x54, 0x2b, 0x38, 0x9d, 0xc8, 0x2e, 0xb8, 0x56, 0xe2, 0xbb,
+	0xe0, 0xb6, 0xc2, 0xac, 0x64, 0xca, 0xfc, 0x76, 0xc9, 0x6c, 0xc4, 0xbc, 0x4b, 0x66, 0x33, 0xf6,
+	0xde, 0x01, 0xb9, 0x86, 0xa1, 0x4c, 0x70, 0x27, 0x50, 0x9d, 0xec, 0xd3, 0x67, 0x0f, 0xa4, 0xc7,
+	0x3b, 0x78, 0x67, 0xfd, 0x18, 0xab, 0x3f, 0xde, 0x8b, 0xff, 0x01, 0x00, 0x00, 0xff, 0xff, 0x17,
+	0xe1, 0xab, 0x77, 0xae, 0x07, 0x00, 0x00,
 }

runtime/service/proto/runtime.pb.micro.go

@@ -1,5 +1,5 @@
 // Code generated by protoc-gen-micro. DO NOT EDIT.
-// source: runtime/service/proto/runtime.proto
+// source: micro/go-micro/runtime/service/proto/runtime.proto
 
 package go_micro_runtime
 
@@ -39,6 +39,7 @@ type RuntimeService interface {
 	Delete(ctx context.Context, in *DeleteRequest, opts ...client.CallOption) (*DeleteResponse, error)
 	Update(ctx context.Context, in *UpdateRequest, opts ...client.CallOption) (*UpdateResponse, error)
 	List(ctx context.Context, in *ListRequest, opts ...client.CallOption) (*ListResponse, error)
+	Logs(ctx context.Context, in *LogsRequest, opts ...client.CallOption) (Runtime_LogsService, error)
 }
 
 type runtimeService struct {
@@ -103,6 +104,55 @@ func (c *runtimeService) List(ctx context.Context, in *ListRequest, opts ...clie
 	return out, nil
 }
 
+func (c *runtimeService) Logs(ctx context.Context, in *LogsRequest, opts ...client.CallOption) (Runtime_LogsService, error) {
+	req := c.c.NewRequest(c.name, "Runtime.Logs", &LogsRequest{})
+	stream, err := c.c.Stream(ctx, req, opts...)
+	if err != nil {
+		return nil, err
+	}
+	if err := stream.Send(in); err != nil {
+		return nil, err
+	}
+	return &runtimeServiceLogs{stream}, nil
+}
+
+type Runtime_LogsService interface {
+	Context() context.Context
+	SendMsg(interface{}) error
+	RecvMsg(interface{}) error
+	Close() error
+	Recv() (*LogRecord, error)
+}
+
+type runtimeServiceLogs struct {
+	stream client.Stream
+}
+
+func (x *runtimeServiceLogs) Close() error {
+	return x.stream.Close()
+}
+
+func (x *runtimeServiceLogs) Context() context.Context {
+	return x.stream.Context()
+}
+
+func (x *runtimeServiceLogs) SendMsg(m interface{}) error {
+	return x.stream.Send(m)
+}
+
+func (x *runtimeServiceLogs) RecvMsg(m interface{}) error {
+	return x.stream.Recv(m)
+}
+
+func (x *runtimeServiceLogs) Recv() (*LogRecord, error) {
+	m := new(LogRecord)
+	err := x.stream.Recv(m)
+	if err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
 // Server API for Runtime service
 
 type RuntimeHandler interface {
@@ -111,6 +161,7 @@ type RuntimeHandler interface {
 	Delete(context.Context, *DeleteRequest, *DeleteResponse) error
 	Update(context.Context, *UpdateRequest, *UpdateResponse) error
 	List(context.Context, *ListRequest, *ListResponse) error
+	Logs(context.Context, *LogsRequest, Runtime_LogsStream) error
 }
 
 func RegisterRuntimeHandler(s server.Server, hdlr RuntimeHandler, opts ...server.HandlerOption) error {
@@ -120,6 +171,7 @@ func RegisterRuntimeHandler(s server.Server, hdlr RuntimeHandler, opts ...server
 		Delete(ctx context.Context, in *DeleteRequest, out *DeleteResponse) error
 		Update(ctx context.Context, in *UpdateRequest, out *UpdateResponse) error
 		List(ctx context.Context, in *ListRequest, out *ListResponse) error
+		Logs(ctx context.Context, stream server.Stream) error
 	}
 	type Runtime struct {
 		runtime
@@ -151,3 +203,43 @@ func (h *runtimeHandler) Update(ctx context.Context, in *UpdateRequest, out *Upd
 func (h *runtimeHandler) List(ctx context.Context, in *ListRequest, out *ListResponse) error {
 	return h.RuntimeHandler.List(ctx, in, out)
 }
+
+func (h *runtimeHandler) Logs(ctx context.Context, stream server.Stream) error {
+	m := new(LogsRequest)
+	if err := stream.Recv(m); err != nil {
+		return err
+	}
+	return h.RuntimeHandler.Logs(ctx, m, &runtimeLogsStream{stream})
+}
+
+type Runtime_LogsStream interface {
+	Context() context.Context
+	SendMsg(interface{}) error
+	RecvMsg(interface{}) error
+	Close() error
+	Send(*LogRecord) error
+}
+
+type runtimeLogsStream struct {
+	stream server.Stream
+}
+
+func (x *runtimeLogsStream) Close() error {
+	return x.stream.Close()
+}
+
+func (x *runtimeLogsStream) Context() context.Context {
+	return x.stream.Context()
+}
+
+func (x *runtimeLogsStream) SendMsg(m interface{}) error {
+	return x.stream.Send(m)
+}
+
+func (x *runtimeLogsStream) RecvMsg(m interface{}) error {
+	return x.stream.Recv(m)
+}
+
+func (x *runtimeLogsStream) Send(m *LogRecord) error {
+	return x.stream.Send(m)
+}

runtime/service/proto/runtime.proto

@@ -8,6 +8,7 @@ service Runtime {
 	rpc Delete(DeleteRequest) returns (DeleteResponse) {};
 	rpc Update(UpdateRequest) returns (UpdateResponse) {};
 	rpc List(ListRequest) returns (ListResponse) {};
+	rpc Logs(LogsRequest) returns (stream LogRecord) {};
 }
 
 message Service {
@@ -84,3 +85,26 @@ message ListRequest {}
 message ListResponse {
 	repeated Service services = 1;
 }
+
+message LogsRequest{
+	// service to request logs for
+	string service = 1;
+	// stream records continuously
+	bool stream = 2;
+	// count of records to request
+	int64 count = 3;
+	// relative time in seconds
+	// before the current time
+	// from which to show logs
+	int64 since = 4;
+}
+
+message LogRecord {
+	// timestamp of log record
+    int64 timestamp = 1;
+    // record metadata
+    map<string,string> metadata = 2;
+    // message
+    string message = 3;
+}
+

runtime/service/service.go

@@ -7,6 +7,7 @@ import (
 	"github.com/micro/go-micro/v2/client"
 	"github.com/micro/go-micro/v2/runtime"
 	pb "github.com/micro/go-micro/v2/runtime/service/proto"
+	"github.com/micro/go-micro/v2/util/log"
 )
 
 type svc struct {
@@ -64,6 +65,53 @@ func (s *svc) Create(svc *runtime.Service, opts ...runtime.CreateOption) error {
 	return nil
 }
 
+func (s *svc) Logs(service *runtime.Service, options ...runtime.LogsOption) (runtime.LogStream, error) {
+	ls, err := s.runtime.Logs(context.Background(), &pb.LogsRequest{
+		Service: service.Name,
+		Stream:  true,
+		Count:   10, // @todo pass in actual options
+	})
+	if err != nil {
+		return nil, err
+	}
+	logStream := &serviceLogStream{
+		service: service.Name,
+		stream:  make(chan runtime.LogRecord),
+		stop:    make(chan bool),
+	}
+	go func() {
+		for {
+			record := runtime.LogRecord{}
+			err := ls.RecvMsg(&record)
+			if err != nil {
+				log.Error(err)
+			}
+			logStream.stream <- record
+		}
+	}()
+	return logStream, nil
+}
+
+type serviceLogStream struct {
+	service string
+	stream  chan runtime.LogRecord
+	stop    chan bool
+}
+
+func (l *serviceLogStream) Chan() chan runtime.LogRecord {
+	return l.stream
+}
+
+func (l *serviceLogStream) Stop() error {
+	select {
+	case <-l.stop:
+		return nil
+	default:
+		close(l.stop)
+	}
+	return nil
+}
+
 // Read returns the service with the given name from the runtime
 func (s *svc) Read(opts ...runtime.ReadOption) ([]*runtime.Service, error) {
 	options := runtime.ReadOptions{}