added grpc

go.work

 go 1.20
 
-use ./src/myaktion
\ No newline at end of file
+use (
+	./src/banktransfer
+	./src/myaktion
+)

go.work.sum

-golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc=
+github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=

src/banktransfer/go.mod

+module gitlab.reutlingen-university.de/albrecht/myaktion-go/src/banktransfer
+
+go 1.20
+
+require (
+	github.com/golang/protobuf v1.5.3 // indirect
+	golang.org/x/net v0.8.0 // indirect
+	golang.org/x/sys v0.6.0 // indirect
+	golang.org/x/text v0.8.0 // indirect
+	google.golang.org/genproto v0.0.0-20230306155012-7f2fa6fef1f4 // indirect
+	google.golang.org/grpc v1.55.0 // indirect
+	google.golang.org/protobuf v1.30.0 // indirect
+)

src/banktransfer/go.sum

+github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
+github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
+github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
+github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+golang.org/x/net v0.8.0 h1:Zrh2ngAOFYneWTAIAPethzeaQLuHwhuBkuV6ZiRnUaQ=
+golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc=
+golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/text v0.8.0 h1:57P1ETyNKtuIjB4SRd15iJxuhj8Gc416Y78H3qgMh68=
+golang.org/x/text v0.8.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/genproto v0.0.0-20230306155012-7f2fa6fef1f4 h1:DdoeryqhaXp1LtT/emMP1BRJPHHKFi5akj/nbx/zNTA=
+google.golang.org/genproto v0.0.0-20230306155012-7f2fa6fef1f4/go.mod h1:NWraEVixdDnqcqQ30jipen1STv2r/n24Wb7twVTGR4s=
+google.golang.org/grpc v1.55.0 h1:3Oj82/tFSCeUrRTg/5E/7d/W5A1tj6Ky1ABAuZuv5ag=
+google.golang.org/grpc v1.55.0/go.mod h1:iYEXKGkEBhg1PjZQvoYEVPTDkHo1/bjTnfwTeGONTY8=
+google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
+google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng=
+google.golang.org/protobuf v1.30.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=

src/banktransfer/grpc/banktransfer/banktransfer.pb.go

+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.30.0
+// 	protoc        v3.12.4
+// source: banktransfer/banktransfer.proto
+
+package banktransfer
+
+import (
+	empty "github.com/golang/protobuf/ptypes/empty"
+	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)
+)
+
+type Account struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Name     string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	BankName string `protobuf:"bytes,2,opt,name=bank_name,json=bankName,proto3" json:"bank_name,omitempty"`
+	Number   string `protobuf:"bytes,3,opt,name=number,proto3" json:"number,omitempty"`
+}
+
+func (x *Account) Reset() {
+	*x = Account{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_banktransfer_banktransfer_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Account) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Account) ProtoMessage() {}
+
+func (x *Account) ProtoReflect() protoreflect.Message {
+	mi := &file_banktransfer_banktransfer_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 Account.ProtoReflect.Descriptor instead.
+func (*Account) Descriptor() ([]byte, []int) {
+	return file_banktransfer_banktransfer_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Account) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *Account) GetBankName() string {
+	if x != nil {
+		return x.BankName
+	}
+	return ""
+}
+
+func (x *Account) GetNumber() string {
+	if x != nil {
+		return x.Number
+	}
+	return ""
+}
+
+type Transaction struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id          int32    `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	DonationId  int32    `protobuf:"varint,2,opt,name=donation_id,json=donationId,proto3" json:"donation_id,omitempty"`
+	Amount      float32  `protobuf:"fixed32,3,opt,name=amount,proto3" json:"amount,omitempty"`
+	Reference   string   `protobuf:"bytes,4,opt,name=reference,proto3" json:"reference,omitempty"`
+	FromAccount *Account `protobuf:"bytes,5,opt,name=from_account,json=fromAccount,proto3" json:"from_account,omitempty"`
+	ToAccount   *Account `protobuf:"bytes,6,opt,name=to_account,json=toAccount,proto3" json:"to_account,omitempty"`
+}
+
+func (x *Transaction) Reset() {
+	*x = Transaction{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_banktransfer_banktransfer_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Transaction) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Transaction) ProtoMessage() {}
+
+func (x *Transaction) ProtoReflect() protoreflect.Message {
+	mi := &file_banktransfer_banktransfer_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 Transaction.ProtoReflect.Descriptor instead.
+func (*Transaction) Descriptor() ([]byte, []int) {
+	return file_banktransfer_banktransfer_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *Transaction) GetId() int32 {
+	if x != nil {
+		return x.Id
+	}
+	return 0
+}
+
+func (x *Transaction) GetDonationId() int32 {
+	if x != nil {
+		return x.DonationId
+	}
+	return 0
+}
+
+func (x *Transaction) GetAmount() float32 {
+	if x != nil {
+		return x.Amount
+	}
+	return 0
+}
+
+func (x *Transaction) GetReference() string {
+	if x != nil {
+		return x.Reference
+	}
+	return ""
+}
+
+func (x *Transaction) GetFromAccount() *Account {
+	if x != nil {
+		return x.FromAccount
+	}
+	return nil
+}
+
+func (x *Transaction) GetToAccount() *Account {
+	if x != nil {
+		return x.ToAccount
+	}
+	return nil
+}
+
+type ProcessingResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id int32 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+}
+
+func (x *ProcessingResponse) Reset() {
+	*x = ProcessingResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_banktransfer_banktransfer_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ProcessingResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ProcessingResponse) ProtoMessage() {}
+
+func (x *ProcessingResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_banktransfer_banktransfer_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 ProcessingResponse.ProtoReflect.Descriptor instead.
+func (*ProcessingResponse) Descriptor() ([]byte, []int) {
+	return file_banktransfer_banktransfer_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *ProcessingResponse) GetId() int32 {
+	if x != nil {
+		return x.Id
+	}
+	return 0
+}
+
+var File_banktransfer_banktransfer_proto protoreflect.FileDescriptor
+
+var file_banktransfer_banktransfer_proto_rawDesc = []byte{
+	0x0a, 0x1f, 0x62, 0x61, 0x6e, 0x6b, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x66, 0x65, 0x72, 0x2f, 0x62,
+	0x61, 0x6e, 0x6b, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x66, 0x65, 0x72, 0x2e, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x12, 0x0c, 0x62, 0x61, 0x6e, 0x6b, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x66, 0x65, 0x72, 0x1a,
+	0x1b, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66,
+	0x2f, 0x65, 0x6d, 0x70, 0x74, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x52, 0x0a, 0x07,
+	0x41, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x12, 0x12, 0x0a, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x18,
+	0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x12, 0x1b, 0x0a, 0x09, 0x62,
+	0x61, 0x6e, 0x6b, 0x5f, 0x6e, 0x61, 0x6d, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x08,
+	0x62, 0x61, 0x6e, 0x6b, 0x4e, 0x61, 0x6d, 0x65, 0x12, 0x16, 0x0a, 0x06, 0x6e, 0x75, 0x6d, 0x62,
+	0x65, 0x72, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x6e, 0x75, 0x6d, 0x62, 0x65, 0x72,
+	0x22, 0xe4, 0x01, 0x0a, 0x0b, 0x54, 0x72, 0x61, 0x6e, 0x73, 0x61, 0x63, 0x74, 0x69, 0x6f, 0x6e,
+	0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x05, 0x52, 0x02, 0x69, 0x64,
+	0x12, 0x1f, 0x0a, 0x0b, 0x64, 0x6f, 0x6e, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x5f, 0x69, 0x64, 0x18,
+	0x02, 0x20, 0x01, 0x28, 0x05, 0x52, 0x0a, 0x64, 0x6f, 0x6e, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x49,
+	0x64, 0x12, 0x16, 0x0a, 0x06, 0x61, 0x6d, 0x6f, 0x75, 0x6e, 0x74, 0x18, 0x03, 0x20, 0x01, 0x28,
+	0x02, 0x52, 0x06, 0x61, 0x6d, 0x6f, 0x75, 0x6e, 0x74, 0x12, 0x1c, 0x0a, 0x09, 0x72, 0x65, 0x66,
+	0x65, 0x72, 0x65, 0x6e, 0x63, 0x65, 0x18, 0x04, 0x20, 0x01, 0x28, 0x09, 0x52, 0x09, 0x72, 0x65,
+	0x66, 0x65, 0x72, 0x65, 0x6e, 0x63, 0x65, 0x12, 0x38, 0x0a, 0x0c, 0x66, 0x72, 0x6f, 0x6d, 0x5f,
+	0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x18, 0x05, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x15, 0x2e,
+	0x62, 0x61, 0x6e, 0x6b, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x66, 0x65, 0x72, 0x2e, 0x41, 0x63, 0x63,
+	0x6f, 0x75, 0x6e, 0x74, 0x52, 0x0b, 0x66, 0x72, 0x6f, 0x6d, 0x41, 0x63, 0x63, 0x6f, 0x75, 0x6e,
+	0x74, 0x12, 0x34, 0x0a, 0x0a, 0x74, 0x6f, 0x5f, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x18,
+	0x06, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x15, 0x2e, 0x62, 0x61, 0x6e, 0x6b, 0x74, 0x72, 0x61, 0x6e,
+	0x73, 0x66, 0x65, 0x72, 0x2e, 0x41, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x52, 0x09, 0x74, 0x6f,
+	0x41, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x22, 0x24, 0x0a, 0x12, 0x50, 0x72, 0x6f, 0x63, 0x65,
+	0x73, 0x73, 0x69, 0x6e, 0x67, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x0e, 0x0a,
+	0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x05, 0x52, 0x02, 0x69, 0x64, 0x32, 0xae, 0x01,
+	0x0a, 0x0c, 0x42, 0x61, 0x6e, 0x6b, 0x54, 0x72, 0x61, 0x6e, 0x73, 0x66, 0x65, 0x72, 0x12, 0x44,
+	0x0a, 0x0d, 0x54, 0x72, 0x61, 0x6e, 0x73, 0x66, 0x65, 0x72, 0x4d, 0x6f, 0x6e, 0x65, 0x79, 0x12,
+	0x19, 0x2e, 0x62, 0x61, 0x6e, 0x6b, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x66, 0x65, 0x72, 0x2e, 0x54,
+	0x72, 0x61, 0x6e, 0x73, 0x61, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x1a, 0x16, 0x2e, 0x67, 0x6f, 0x6f,
+	0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70,
+	0x74, 0x79, 0x22, 0x00, 0x12, 0x58, 0x0a, 0x13, 0x50, 0x72, 0x6f, 0x63, 0x65, 0x73, 0x73, 0x54,
+	0x72, 0x61, 0x6e, 0x73, 0x61, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x12, 0x20, 0x2e, 0x62, 0x61,
+	0x6e, 0x6b, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x66, 0x65, 0x72, 0x2e, 0x50, 0x72, 0x6f, 0x63, 0x65,
+	0x73, 0x73, 0x69, 0x6e, 0x67, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x1a, 0x19, 0x2e,
+	0x62, 0x61, 0x6e, 0x6b, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x66, 0x65, 0x72, 0x2e, 0x54, 0x72, 0x61,
+	0x6e, 0x73, 0x61, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x22, 0x00, 0x28, 0x01, 0x30, 0x01, 0x42, 0x59,
+	0x5a, 0x57, 0x67, 0x69, 0x74, 0x6c, 0x61, 0x62, 0x2e, 0x72, 0x65, 0x75, 0x74, 0x6c, 0x69, 0x6e,
+	0x67, 0x65, 0x6e, 0x2d, 0x75, 0x6e, 0x69, 0x76, 0x65, 0x72, 0x73, 0x69, 0x74, 0x79, 0x2e, 0x64,
+	0x65, 0x2f, 0x61, 0x6c, 0x62, 0x72, 0x65, 0x63, 0x68, 0x74, 0x2f, 0x6d, 0x79, 0x61, 0x6b, 0x74,
+	0x69, 0x6f, 0x6e, 0x2d, 0x67, 0x6f, 0x2f, 0x73, 0x72, 0x63, 0x2f, 0x62, 0x61, 0x6e, 0x6b, 0x74,
+	0x72, 0x61, 0x6e, 0x73, 0x66, 0x65, 0x72, 0x2f, 0x67, 0x72, 0x70, 0x63, 0x2f, 0x62, 0x61, 0x6e,
+	0x6b, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x66, 0x65, 0x72, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x33,
+}
+
+var (
+	file_banktransfer_banktransfer_proto_rawDescOnce sync.Once
+	file_banktransfer_banktransfer_proto_rawDescData = file_banktransfer_banktransfer_proto_rawDesc
+)
+
+func file_banktransfer_banktransfer_proto_rawDescGZIP() []byte {
+	file_banktransfer_banktransfer_proto_rawDescOnce.Do(func() {
+		file_banktransfer_banktransfer_proto_rawDescData = protoimpl.X.CompressGZIP(file_banktransfer_banktransfer_proto_rawDescData)
+	})
+	return file_banktransfer_banktransfer_proto_rawDescData
+}
+
+var file_banktransfer_banktransfer_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
+var file_banktransfer_banktransfer_proto_goTypes = []interface{}{
+	(*Account)(nil),            // 0: banktransfer.Account
+	(*Transaction)(nil),        // 1: banktransfer.Transaction
+	(*ProcessingResponse)(nil), // 2: banktransfer.ProcessingResponse
+	(*empty.Empty)(nil),        // 3: google.protobuf.Empty
+}
+var file_banktransfer_banktransfer_proto_depIdxs = []int32{
+	0, // 0: banktransfer.Transaction.from_account:type_name -> banktransfer.Account
+	0, // 1: banktransfer.Transaction.to_account:type_name -> banktransfer.Account
+	1, // 2: banktransfer.BankTransfer.TransferMoney:input_type -> banktransfer.Transaction
+	2, // 3: banktransfer.BankTransfer.ProcessTransactions:input_type -> banktransfer.ProcessingResponse
+	3, // 4: banktransfer.BankTransfer.TransferMoney:output_type -> google.protobuf.Empty
+	1, // 5: banktransfer.BankTransfer.ProcessTransactions:output_type -> banktransfer.Transaction
+	4, // [4:6] is the sub-list for method output_type
+	2, // [2:4] is the sub-list for method input_type
+	2, // [2:2] is the sub-list for extension type_name
+	2, // [2:2] is the sub-list for extension extendee
+	0, // [0:2] is the sub-list for field type_name
+}
+
+func init() { file_banktransfer_banktransfer_proto_init() }
+func file_banktransfer_banktransfer_proto_init() {
+	if File_banktransfer_banktransfer_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_banktransfer_banktransfer_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Account); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_banktransfer_banktransfer_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Transaction); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_banktransfer_banktransfer_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ProcessingResponse); 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_banktransfer_banktransfer_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   3,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_banktransfer_banktransfer_proto_goTypes,
+		DependencyIndexes: file_banktransfer_banktransfer_proto_depIdxs,
+		MessageInfos:      file_banktransfer_banktransfer_proto_msgTypes,
+	}.Build()
+	File_banktransfer_banktransfer_proto = out.File
+	file_banktransfer_banktransfer_proto_rawDesc = nil
+	file_banktransfer_banktransfer_proto_goTypes = nil
+	file_banktransfer_banktransfer_proto_depIdxs = nil
+}

src/banktransfer/grpc/banktransfer/banktransfer.proto

+syntax = "proto3";
+
+package banktransfer;
+
+import "google/protobuf/empty.proto";
+
+option go_package = "gitlab.reutlingen-university.de/albrecht/myaktion-go/src/banktransfer/grpc/banktransfer";
+
+service BankTransfer {
+    rpc TransferMoney (Transaction) returns (google.protobuf.Empty) {}
+    rpc ProcessTransactions (stream ProcessingResponse) returns (stream Transaction) {}
+}
+
+message Account {
+	string name = 1;
+	string bank_name =2;
+	string number = 3;
+	}
+	message Transaction {
+	int32 id = 1;
+	int32 donation_id = 2;
+	float amount = 3;
+	string reference = 4;
+	Account from_account = 5;
+	Account to_account = 6;
+	}
+	message ProcessingResponse {
+	int32 id = 1;
+}
\ No newline at end of file

src/banktransfer/grpc/banktransfer/banktransfer_grpc.pb.go

+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.3.0
+// - protoc             v3.12.4
+// source: banktransfer/banktransfer.proto
+
+package banktransfer
+
+import (
+	context "context"
+	empty "github.com/golang/protobuf/ptypes/empty"
+	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
+
+const (
+	BankTransfer_TransferMoney_FullMethodName       = "/banktransfer.BankTransfer/TransferMoney"
+	BankTransfer_ProcessTransactions_FullMethodName = "/banktransfer.BankTransfer/ProcessTransactions"
+)
+
+// BankTransferClient is the client API for BankTransfer 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 BankTransferClient interface {
+	TransferMoney(ctx context.Context, in *Transaction, opts ...grpc.CallOption) (*empty.Empty, error)
+	ProcessTransactions(ctx context.Context, opts ...grpc.CallOption) (BankTransfer_ProcessTransactionsClient, error)
+}
+
+type bankTransferClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewBankTransferClient(cc grpc.ClientConnInterface) BankTransferClient {
+	return &bankTransferClient{cc}
+}
+
+func (c *bankTransferClient) TransferMoney(ctx context.Context, in *Transaction, opts ...grpc.CallOption) (*empty.Empty, error) {
+	out := new(empty.Empty)
+	err := c.cc.Invoke(ctx, BankTransfer_TransferMoney_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *bankTransferClient) ProcessTransactions(ctx context.Context, opts ...grpc.CallOption) (BankTransfer_ProcessTransactionsClient, error) {
+	stream, err := c.cc.NewStream(ctx, &BankTransfer_ServiceDesc.Streams[0], BankTransfer_ProcessTransactions_FullMethodName, opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &bankTransferProcessTransactionsClient{stream}
+	return x, nil
+}
+
+type BankTransfer_ProcessTransactionsClient interface {
+	Send(*ProcessingResponse) error
+	Recv() (*Transaction, error)
+	grpc.ClientStream
+}
+
+type bankTransferProcessTransactionsClient struct {
+	grpc.ClientStream
+}
+
+func (x *bankTransferProcessTransactionsClient) Send(m *ProcessingResponse) error {
+	return x.ClientStream.SendMsg(m)
+}
+
+func (x *bankTransferProcessTransactionsClient) Recv() (*Transaction, error) {
+	m := new(Transaction)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+// BankTransferServer is the server API for BankTransfer service.
+// All implementations must embed UnimplementedBankTransferServer
+// for forward compatibility
+type BankTransferServer interface {
+	TransferMoney(context.Context, *Transaction) (*empty.Empty, error)
+	ProcessTransactions(BankTransfer_ProcessTransactionsServer) error
+	mustEmbedUnimplementedBankTransferServer()
+}
+
+// UnimplementedBankTransferServer must be embedded to have forward compatible implementations.
+type UnimplementedBankTransferServer struct {
+}
+
+func (UnimplementedBankTransferServer) TransferMoney(context.Context, *Transaction) (*empty.Empty, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method TransferMoney not implemented")
+}
+func (UnimplementedBankTransferServer) ProcessTransactions(BankTransfer_ProcessTransactionsServer) error {
+	return status.Errorf(codes.Unimplemented, "method ProcessTransactions not implemented")
+}
+func (UnimplementedBankTransferServer) mustEmbedUnimplementedBankTransferServer() {}
+
+// UnsafeBankTransferServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to BankTransferServer will
+// result in compilation errors.
+type UnsafeBankTransferServer interface {
+	mustEmbedUnimplementedBankTransferServer()
+}
+
+func RegisterBankTransferServer(s grpc.ServiceRegistrar, srv BankTransferServer) {
+	s.RegisterService(&BankTransfer_ServiceDesc, srv)
+}
+
+func _BankTransfer_TransferMoney_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(Transaction)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(BankTransferServer).TransferMoney(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: BankTransfer_TransferMoney_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(BankTransferServer).TransferMoney(ctx, req.(*Transaction))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _BankTransfer_ProcessTransactions_Handler(srv interface{}, stream grpc.ServerStream) error {
+	return srv.(BankTransferServer).ProcessTransactions(&bankTransferProcessTransactionsServer{stream})
+}
+
+type BankTransfer_ProcessTransactionsServer interface {
+	Send(*Transaction) error
+	Recv() (*ProcessingResponse, error)
+	grpc.ServerStream
+}
+
+type bankTransferProcessTransactionsServer struct {
+	grpc.ServerStream
+}
+
+func (x *bankTransferProcessTransactionsServer) Send(m *Transaction) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func (x *bankTransferProcessTransactionsServer) Recv() (*ProcessingResponse, error) {
+	m := new(ProcessingResponse)
+	if err := x.ServerStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+// BankTransfer_ServiceDesc is the grpc.ServiceDesc for BankTransfer service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var BankTransfer_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "banktransfer.BankTransfer",
+	HandlerType: (*BankTransferServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "TransferMoney",
+			Handler:    _BankTransfer_TransferMoney_Handler,
+		},
+	},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "ProcessTransactions",
+			Handler:       _BankTransfer_ProcessTransactions_Handler,
+			ServerStreams: true,
+			ClientStreams: true,
+		},
+	},
+	Metadata: "banktransfer/banktransfer.proto",
+}

src/banktransfer/grpc/gen.go

+package grpc
+
+//go:generate protoc --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative banktransfer/banktransfer.proto

src/banktransfer/main.go

+package main
+
+func main() {
+	//test
+}

src/banktransfer/service/banktransfer.go

+package service
+
+import (
+	"context"
+
+	log "github.com/sirupsen/logrus"
+	"gitlab.reutlingen-university.de/albrecht/myaktion-go/src/banktransfer/grpc/banktransfer"
+	"google.golang.org/protobuf/types/known/emptypb"
+)
+
+type BankTransferService struct {
+	banktransfer.BankTransferServer
+	counter int32
+}
+
+func NewBankTransferService() *BankTransferService {
+	return &BankTransferService{counter: 1}
+}
+func (s *BankTransferService) TransferMoney(_ context.Context, transaction *banktransfer.Transaction) (*emptypb.Empty, error) {
+	log.Infof("Received transaction: %v", transaction)
+	return &emptypb.Empty{}, nil
+}