Go test project (1st learning step)

Makefile

@@ -0,0 +1,3 @@
+build:
+	protoc -I. --go_out=plugins=grpc:. \
+	  proto/consignment/consignment.proto

go.mod

@@ -0,0 +1,12 @@
+module gitea.pmpark.de/dirk/shippy-service-consignment
+
+go 1.13
+
+require (
+	github.com/golang/protobuf v1.3.2
+	golang.org/x/net v0.0.0-20191014212845-da9a3fd4c582 // indirect
+	golang.org/x/sys v0.0.0-20191010194322-b09406accb47 // indirect
+	golang.org/x/text v0.3.2 // indirect
+	google.golang.org/genproto v0.0.0-20191009194640-548a555dbc03 // indirect
+	google.golang.org/grpc v1.24.0
+)

go.sum

@@ -0,0 +1,50 @@
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main.go

@@ -0,0 +1,88 @@
+// shippy-service-consignment/main.go
+package main
+
+import (
+	"context"
+	"log"
+	"net"
+	"sync"
+
+	// Import the generated protobuf code
+	//pb "github.com/<YourUserName>/shippy-service-consignment/proto/consignment"
+	pb "gitea.pmpark.de/dirk/shippy-service-consignment/proto/consignment"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/reflection"
+)
+
+const (
+	port = ":50051"
+)
+
+type repository interface {
+	Create(*pb.Consignment) (*pb.Consignment, error)
+}
+
+// Repository - Dummy repository, this simulates the use of a datastore
+// of some kind. We'll replace this with a real implementation later on.
+type Repository struct {
+	mu           sync.RWMutex
+	consignments []*pb.Consignment
+}
+
+// Create a new consignment
+func (repo *Repository) Create(consignment *pb.Consignment) (*pb.Consignment, error) {
+	repo.mu.Lock()
+	updated := append(repo.consignments, consignment)
+	repo.consignments = updated
+	repo.mu.Unlock()
+	return consignment, nil
+}
+
+// Service should implement all of the methods to satisfy the service
+// we defined in our protobuf definition. You can check the interface
+// in the generated code itself for the exact method signatures etc
+// to give you a better idea.
+type service struct {
+	repo repository
+}
+
+// CreateConsignment - we created just one method on our service,
+// which is a create method, which takes a context and a request as an
+// argument, these are handled by the gRPC server.
+func (s *service) CreateConsignment(ctx context.Context, req *pb.Consignment) (*pb.Response, error) {
+
+	// Save our consignment
+	consignment, err := s.repo.Create(req)
+	if err != nil {
+		return nil, err
+	}
+
+	// Return matching the `Response` message we created in our
+	// protobuf definition.
+	return &pb.Response{Created: true, Consignment: consignment}, nil
+}
+
+func main() {
+
+	repo := &Repository{}
+
+	// Set-up our gRPC server.
+	lis, err := net.Listen("tcp", port)
+	if err != nil {
+		log.Fatalf("failed to listen: %v", err)
+	}
+	s := grpc.NewServer()
+
+	// Register our service with the gRPC server, this will tie our
+	// implementation into the auto-generated interface code for our
+	// protobuf definition.
+	pb.RegisterShippingServiceServer(s, &service{repo})
+
+	// Register reflection service on gRPC server.
+	reflection.Register(s)
+
+	log.Println("Running on port:", port)
+	if err := s.Serve(lis); err != nil {
+		log.Fatalf("failed to serve: %v", err)
+	}
+}

proto/consignment/consignment.pb.go

@@ -0,0 +1,319 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: proto/consignment/consignment.proto
+
+package consignment
+
+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"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+type Consignment struct {
+	Id                   string       `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	Description          string       `protobuf:"bytes,2,opt,name=description,proto3" json:"description,omitempty"`
+	Weight               int32        `protobuf:"varint,3,opt,name=weight,proto3" json:"weight,omitempty"`
+	Containers           []*Container `protobuf:"bytes,4,rep,name=containers,proto3" json:"containers,omitempty"`
+	VesselId             string       `protobuf:"bytes,5,opt,name=vessel_id,json=vesselId,proto3" json:"vessel_id,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}     `json:"-"`
+	XXX_unrecognized     []byte       `json:"-"`
+	XXX_sizecache        int32        `json:"-"`
+}
+
+func (m *Consignment) Reset()         { *m = Consignment{} }
+func (m *Consignment) String() string { return proto.CompactTextString(m) }
+func (*Consignment) ProtoMessage()    {}
+func (*Consignment) Descriptor() ([]byte, []int) {
+	return fileDescriptor_e5e5ab05dfa973d5, []int{0}
+}
+
+func (m *Consignment) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Consignment.Unmarshal(m, b)
+}
+func (m *Consignment) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Consignment.Marshal(b, m, deterministic)
+}
+func (m *Consignment) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Consignment.Merge(m, src)
+}
+func (m *Consignment) XXX_Size() int {
+	return xxx_messageInfo_Consignment.Size(m)
+}
+func (m *Consignment) XXX_DiscardUnknown() {
+	xxx_messageInfo_Consignment.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Consignment proto.InternalMessageInfo
+
+func (m *Consignment) GetId() string {
+	if m != nil {
+		return m.Id
+	}
+	return ""
+}
+
+func (m *Consignment) GetDescription() string {
+	if m != nil {
+		return m.Description
+	}
+	return ""
+}
+
+func (m *Consignment) GetWeight() int32 {
+	if m != nil {
+		return m.Weight
+	}
+	return 0
+}
+
+func (m *Consignment) GetContainers() []*Container {
+	if m != nil {
+		return m.Containers
+	}
+	return nil
+}
+
+func (m *Consignment) GetVesselId() string {
+	if m != nil {
+		return m.VesselId
+	}
+	return ""
+}
+
+type Container struct {
+	Id                   string   `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	CustomerId           string   `protobuf:"bytes,2,opt,name=customer_id,json=customerId,proto3" json:"customer_id,omitempty"`
+	Origin               string   `protobuf:"bytes,3,opt,name=origin,proto3" json:"origin,omitempty"`
+	UserId               string   `protobuf:"bytes,4,opt,name=user_id,json=userId,proto3" json:"user_id,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Container) Reset()         { *m = Container{} }
+func (m *Container) String() string { return proto.CompactTextString(m) }
+func (*Container) ProtoMessage()    {}
+func (*Container) Descriptor() ([]byte, []int) {
+	return fileDescriptor_e5e5ab05dfa973d5, []int{1}
+}
+
+func (m *Container) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Container.Unmarshal(m, b)
+}
+func (m *Container) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Container.Marshal(b, m, deterministic)
+}
+func (m *Container) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Container.Merge(m, src)
+}
+func (m *Container) XXX_Size() int {
+	return xxx_messageInfo_Container.Size(m)
+}
+func (m *Container) XXX_DiscardUnknown() {
+	xxx_messageInfo_Container.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Container proto.InternalMessageInfo
+
+func (m *Container) GetId() string {
+	if m != nil {
+		return m.Id
+	}
+	return ""
+}
+
+func (m *Container) GetCustomerId() string {
+	if m != nil {
+		return m.CustomerId
+	}
+	return ""
+}
+
+func (m *Container) GetOrigin() string {
+	if m != nil {
+		return m.Origin
+	}
+	return ""
+}
+
+func (m *Container) GetUserId() string {
+	if m != nil {
+		return m.UserId
+	}
+	return ""
+}
+
+type Response struct {
+	Created              bool         `protobuf:"varint,1,opt,name=created,proto3" json:"created,omitempty"`
+	Consignment          *Consignment `protobuf:"bytes,2,opt,name=consignment,proto3" json:"consignment,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}     `json:"-"`
+	XXX_unrecognized     []byte       `json:"-"`
+	XXX_sizecache        int32        `json:"-"`
+}
+
+func (m *Response) Reset()         { *m = Response{} }
+func (m *Response) String() string { return proto.CompactTextString(m) }
+func (*Response) ProtoMessage()    {}
+func (*Response) Descriptor() ([]byte, []int) {
+	return fileDescriptor_e5e5ab05dfa973d5, []int{2}
+}
+
+func (m *Response) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Response.Unmarshal(m, b)
+}
+func (m *Response) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Response.Marshal(b, m, deterministic)
+}
+func (m *Response) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Response.Merge(m, src)
+}
+func (m *Response) XXX_Size() int {
+	return xxx_messageInfo_Response.Size(m)
+}
+func (m *Response) XXX_DiscardUnknown() {
+	xxx_messageInfo_Response.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Response proto.InternalMessageInfo
+
+func (m *Response) GetCreated() bool {
+	if m != nil {
+		return m.Created
+	}
+	return false
+}
+
+func (m *Response) GetConsignment() *Consignment {
+	if m != nil {
+		return m.Consignment
+	}
+	return nil
+}
+
+func init() {
+	proto.RegisterType((*Consignment)(nil), "consignment.Consignment")
+	proto.RegisterType((*Container)(nil), "consignment.Container")
+	proto.RegisterType((*Response)(nil), "consignment.Response")
+}
+
+func init() {
+	proto.RegisterFile("proto/consignment/consignment.proto", fileDescriptor_e5e5ab05dfa973d5)
+}
+
+var fileDescriptor_e5e5ab05dfa973d5 = []byte{
+	// 296 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x74, 0x51, 0x4f, 0x4b, 0x3b, 0x31,
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+	0xad, 0xd0, 0xc0, 0x95, 0x2e, 0x9f, 0x61, 0x22, 0xd1, 0xd7, 0xd6, 0x78, 0xe4, 0x02, 0xc6, 0xca,
+	0xe1, 0x26, 0x60, 0x6b, 0x39, 0x91, 0x1d, 0xe4, 0xf7, 0x90, 0x7e, 0x69, 0xf4, 0x65, 0x0b, 0xf1,
+	0xf3, 0xa9, 0x5d, 0x2d, 0xd3, 0xe6, 0xc5, 0x23, 0x9c, 0xac, 0xb7, 0x54, 0xd7, 0x64, 0xaa, 0x35,
+	0xba, 0x03, 0x29, 0xe4, 0x0f, 0x70, 0xba, 0x8c, 0x9b, 0xd3, 0xbb, 0xfc, 0xb9, 0xee, 0xe2, 0xec,
+	0x9b, 0xd2, 0xc5, 0x2d, 0xff, 0xbd, 0x8c, 0xe2, 0xb9, 0x6f, 0x3f, 0x02, 0x00, 0x00, 0xff, 0xff,
+	0x5d, 0xef, 0xe4, 0xb7, 0x15, 0x02, 0x00, 0x00,
+}
+
+// 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
+
+// ShippingServiceClient is the client API for ShippingService service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
+type ShippingServiceClient interface {
+	CreateConsignment(ctx context.Context, in *Consignment, opts ...grpc.CallOption) (*Response, error)
+}
+
+type shippingServiceClient struct {
+	cc *grpc.ClientConn
+}
+
+func NewShippingServiceClient(cc *grpc.ClientConn) ShippingServiceClient {
+	return &shippingServiceClient{cc}
+}
+
+func (c *shippingServiceClient) CreateConsignment(ctx context.Context, in *Consignment, opts ...grpc.CallOption) (*Response, error) {
+	out := new(Response)
+	err := c.cc.Invoke(ctx, "/consignment.ShippingService/CreateConsignment", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// ShippingServiceServer is the server API for ShippingService service.
+type ShippingServiceServer interface {
+	CreateConsignment(context.Context, *Consignment) (*Response, error)
+}
+
+// UnimplementedShippingServiceServer can be embedded to have forward compatible implementations.
+type UnimplementedShippingServiceServer struct {
+}
+
+func (*UnimplementedShippingServiceServer) CreateConsignment(ctx context.Context, req *Consignment) (*Response, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method CreateConsignment not implemented")
+}
+
+func RegisterShippingServiceServer(s *grpc.Server, srv ShippingServiceServer) {
+	s.RegisterService(&_ShippingService_serviceDesc, srv)
+}
+
+func _ShippingService_CreateConsignment_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(Consignment)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ShippingServiceServer).CreateConsignment(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/consignment.ShippingService/CreateConsignment",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ShippingServiceServer).CreateConsignment(ctx, req.(*Consignment))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+var _ShippingService_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "consignment.ShippingService",
+	HandlerType: (*ShippingServiceServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "CreateConsignment",
+			Handler:    _ShippingService_CreateConsignment_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "proto/consignment/consignment.proto",
+}

proto/consignment/consignment.proto

@@ -0,0 +1,28 @@
+// shippy-service-consignment/proto/consignment/consignment.proto
+syntax = "proto3";
+
+package consignment;
+
+service ShippingService {
+  rpc CreateConsignment(Consignment) returns (Response) {}
+}
+
+message Consignment {
+  string id = 1;
+  string description = 2;
+  int32 weight = 3;
+  repeated Container containers = 4;
+  string vessel_id = 5;
+}
+
+message Container {
+  string id = 1;
+  string customer_id = 2;
+  string origin = 3;
+  string user_id = 4;
+}
+
+message Response {
+  bool created = 1;
+  Consignment consignment = 2;
+}