From 620f5f2b82d47e5cf3fad982005514606f4c2503 Mon Sep 17 00:00:00 2001 From: Matthias Schild Date: Tue, 1 Sep 2026 00:54:46 +0200 Subject: [PATCH] feat: initial commit --- README.md | 8 +++ Taskfile.yml | 6 ++ client/main.go | 30 ++++++++++ go.mod | 43 +++++++++++++ go.sum | 114 +++++++++++++++++++++++++++++++++++ main.go | 46 ++++++++++++++ proto/readme.md | 3 + proto/service.pb.go | 126 +++++++++++++++++++++++++++++++++++++++ proto/service.proto | 11 ++++ proto/service_grpc.pb.go | 122 +++++++++++++++++++++++++++++++++++++ service.go | 16 +++++ 11 files changed, 525 insertions(+) create mode 100644 README.md create mode 100644 Taskfile.yml create mode 100644 client/main.go create mode 100644 go.mod create mode 100644 go.sum create mode 100644 main.go create mode 100644 proto/readme.md create mode 100644 proto/service.pb.go create mode 100644 proto/service.proto create mode 100644 proto/service_grpc.pb.go create mode 100644 service.go diff --git a/README.md b/README.md new file mode 100644 index 0000000..efe84d1 --- /dev/null +++ b/README.md @@ -0,0 +1,8 @@ +# Go + GRPC (+ Web Server for docs) + +To use GRPC: + +- Install the newest protobuf release from [Protocol Buffers](https://github.com/protocolbuffers/protobuf/releases) +- `go install google.golang.org/protobuf/cmd/protoc-gen-go@latest` +- `go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest` + diff --git a/Taskfile.yml b/Taskfile.yml new file mode 100644 index 0000000..fdde277 --- /dev/null +++ b/Taskfile.yml @@ -0,0 +1,6 @@ +version: "3" + +tasks: + proto: + cmds: + - protoc --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative proto/*.proto diff --git a/client/main.go b/client/main.go new file mode 100644 index 0000000..fe4eb08 --- /dev/null +++ b/client/main.go @@ -0,0 +1,30 @@ +package main + +import ( + "context" + "gogrpc/proto" + "log/slog" + "os" + + "google.golang.org/grpc" + "google.golang.org/grpc/credentials/insecure" +) + +func main() { + conn, err := grpc.NewClient("127.0.0.1:1337", grpc.WithTransportCredentials(insecure.NewCredentials())) + if err != nil { + slog.Error("Failed to connect to server", "err", err.Error()) + os.Exit(1) + } + defer conn.Close() + + client := proto.NewServiceClient(conn) + input := proto.PingMessage{Message: "ping"} + output, err := client.Ping(context.Background(), &input) + if err != nil { + slog.Error("failed to execute ping", "err", err.Error()) + os.Exit(1) + } + + slog.Info("received response", "message", output.Message) +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..7fa06f9 --- /dev/null +++ b/go.mod @@ -0,0 +1,43 @@ +module gogrpc + +go 1.25.4 + +require ( + github.com/gin-gonic/gin v1.11.0 + google.golang.org/grpc v1.78.0 + google.golang.org/protobuf v1.36.10 +) + +require ( + github.com/bytedance/sonic v1.14.0 // indirect + github.com/bytedance/sonic/loader v0.3.0 // indirect + github.com/cloudwego/base64x v0.1.6 // indirect + github.com/gabriel-vasile/mimetype v1.4.8 // indirect + github.com/gin-contrib/sse v1.1.0 // indirect + github.com/go-playground/locales v0.14.1 // indirect + github.com/go-playground/universal-translator v0.18.1 // indirect + github.com/go-playground/validator/v10 v10.27.0 // indirect + github.com/goccy/go-json v0.10.2 // indirect + github.com/goccy/go-yaml v1.18.0 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/klauspost/cpuid/v2 v2.3.0 // indirect + github.com/leodido/go-urn v1.4.0 // indirect + github.com/mattn/go-isatty v0.0.20 // indirect + github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/pelletier/go-toml/v2 v2.2.4 // indirect + github.com/quic-go/qpack v0.5.1 // indirect + github.com/quic-go/quic-go v0.54.0 // indirect + github.com/twitchyliquid64/golang-asm v0.15.1 // indirect + github.com/ugorji/go/codec v1.3.0 // indirect + go.uber.org/mock v0.5.0 // indirect + golang.org/x/arch v0.20.0 // indirect + golang.org/x/crypto v0.44.0 // indirect + golang.org/x/mod v0.29.0 // indirect + golang.org/x/net v0.47.0 // indirect + golang.org/x/sync v0.18.0 // indirect + golang.org/x/sys v0.38.0 // indirect + golang.org/x/text v0.31.0 // indirect + golang.org/x/tools v0.38.0 // indirect + google.golang.org/genproto/googleapis/rpc v0.0.0-20251029180050-ab9386a59fda // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..ecf3860 --- /dev/null +++ b/go.sum @@ -0,0 +1,114 @@ +github.com/bytedance/sonic v1.14.0 h1:/OfKt8HFw0kh2rj8N0F6C/qPGRESq0BbaNZgcNXXzQQ= +github.com/bytedance/sonic v1.14.0/go.mod h1:WoEbx8WTcFJfzCe0hbmyTGrfjt8PzNEBdxlNUO24NhA= +github.com/bytedance/sonic/loader v0.3.0 h1:dskwH8edlzNMctoruo8FPTJDF3vLtDT0sXZwvZJyqeA= +github.com/bytedance/sonic/loader v0.3.0/go.mod h1:N8A3vUdtUebEY2/VQC0MyhYeKUFosQU6FxH2JmUe6VI= +github.com/cloudwego/base64x v0.1.6 h1:t11wG9AECkCDk5fMSoxmufanudBtJ+/HemLstXDLI2M= 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v0.0.0-20251029180050-ab9386a59fda/go.mod h1:7i2o+ce6H/6BluujYR+kqX3GKH+dChPTQU19wjRPiGk= +google.golang.org/grpc v1.78.0 h1:K1XZG/yGDJnzMdd/uZHAkVqJE+xIDOcmdSFZkBUicNc= +google.golang.org/grpc v1.78.0/go.mod h1:I47qjTo4OKbMkjA/aOOwxDIiPSBofUtQUI5EfpWvW7U= +google.golang.org/protobuf v1.36.10 h1:AYd7cD/uASjIL6Q9LiTjz8JLcrh/88q5UObnmY3aOOE= +google.golang.org/protobuf v1.36.10/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= diff --git a/main.go b/main.go new file mode 100644 index 0000000..b3ceb2a --- /dev/null +++ b/main.go @@ -0,0 +1,46 @@ +package main + +import ( + "embed" + "gogrpc/proto" + "log/slog" + "net" + "net/http" + + "github.com/gin-gonic/gin" + "google.golang.org/grpc" +) + +//go:embed proto +var protoFS embed.FS + +func startWebServer(abort chan struct{}) { + fileServer := http.FileServer(http.FS(protoFS)) + + r := gin.Default() + r.GET("/*filepath", gin.WrapH(fileServer)) + + r.Run() + + slog.Error("failed to start web server") + abort <- struct{}{} +} + +func startGrpcServer(abort chan struct{}) { + listener, _ := net.Listen("tcp", ":1337") + service := grpc.NewServer() + proto.RegisterServiceServer(service, &Service{}) + service.Serve(listener) + + slog.Error("failed to start grpc server") + abort <- struct{}{} +} + +func main() { + abort := make(chan struct{}) + + go startWebServer(abort) + go startGrpcServer(abort) + + <-abort +} diff --git a/proto/readme.md b/proto/readme.md new file mode 100644 index 0000000..e6bb60d --- /dev/null +++ b/proto/readme.md @@ -0,0 +1,3 @@ +# Service + +the service runs on port 1337 \ No newline at end of file diff --git a/proto/service.pb.go b/proto/service.pb.go new file mode 100644 index 0000000..77f8de8 --- /dev/null +++ b/proto/service.pb.go @@ -0,0 +1,126 @@ +// Code generated by protoc-gen-go. DO NOT EDIT. +// versions: +// protoc-gen-go v1.36.11 +// protoc v6.33.2 +// source: proto/service.proto + +package proto + +import ( + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + reflect "reflect" + sync "sync" + unsafe "unsafe" +) + +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 PingMessage struct { + state protoimpl.MessageState `protogen:"open.v1"` + Message string `protobuf:"bytes,1,opt,name=message,proto3" json:"message,omitempty"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +func (x *PingMessage) Reset() { + *x = PingMessage{} + mi := &file_proto_service_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *PingMessage) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*PingMessage) ProtoMessage() {} + +func (x *PingMessage) ProtoReflect() protoreflect.Message { + mi := &file_proto_service_proto_msgTypes[0] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use PingMessage.ProtoReflect.Descriptor instead. +func (*PingMessage) Descriptor() ([]byte, []int) { + return file_proto_service_proto_rawDescGZIP(), []int{0} +} + +func (x *PingMessage) GetMessage() string { + if x != nil { + return x.Message + } + return "" +} + +var File_proto_service_proto protoreflect.FileDescriptor + +const file_proto_service_proto_rawDesc = "" + + "\n" + + "\x13proto/service.proto\"'\n" + + "\vPingMessage\x12\x18\n" + + "\amessage\x18\x01 \x01(\tR\amessage2-\n" + + "\aService\x12\"\n" + + "\x04Ping\x12\f.PingMessage\x1a\f.PingMessageB\x0eZ\fgogrpc/protob\x06proto3" + +var ( + file_proto_service_proto_rawDescOnce sync.Once + file_proto_service_proto_rawDescData []byte +) + +func file_proto_service_proto_rawDescGZIP() []byte { + file_proto_service_proto_rawDescOnce.Do(func() { + file_proto_service_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_proto_service_proto_rawDesc), len(file_proto_service_proto_rawDesc))) + }) + return file_proto_service_proto_rawDescData +} + +var file_proto_service_proto_msgTypes = make([]protoimpl.MessageInfo, 1) +var file_proto_service_proto_goTypes = []any{ + (*PingMessage)(nil), // 0: PingMessage +} +var file_proto_service_proto_depIdxs = []int32{ + 0, // 0: Service.Ping:input_type -> PingMessage + 0, // 1: Service.Ping:output_type -> PingMessage + 1, // [1:2] is the sub-list for method output_type + 0, // [0:1] 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_proto_service_proto_init() } +func file_proto_service_proto_init() { + if File_proto_service_proto != nil { + return + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: unsafe.Slice(unsafe.StringData(file_proto_service_proto_rawDesc), len(file_proto_service_proto_rawDesc)), + NumEnums: 0, + NumMessages: 1, + NumExtensions: 0, + NumServices: 1, + }, + GoTypes: file_proto_service_proto_goTypes, + DependencyIndexes: file_proto_service_proto_depIdxs, + MessageInfos: file_proto_service_proto_msgTypes, + }.Build() + File_proto_service_proto = out.File + file_proto_service_proto_goTypes = nil + file_proto_service_proto_depIdxs = nil +} diff --git a/proto/service.proto b/proto/service.proto new file mode 100644 index 0000000..51d437e --- /dev/null +++ b/proto/service.proto @@ -0,0 +1,11 @@ +syntax = "proto3"; + +option go_package = "gogrpc/proto"; + +message PingMessage { + string message = 1; +} + +service Service { + rpc Ping (PingMessage) returns (PingMessage); +} \ No newline at end of file diff --git a/proto/service_grpc.pb.go b/proto/service_grpc.pb.go new file mode 100644 index 0000000..3a03b9c --- /dev/null +++ b/proto/service_grpc.pb.go @@ -0,0 +1,122 @@ +// Code generated by protoc-gen-go-grpc. DO NOT EDIT. +// versions: +// - protoc-gen-go-grpc v1.6.0 +// - protoc v6.33.2 +// source: proto/service.proto + +package proto + +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 v1.64.0 or later. +const _ = grpc.SupportPackageIsVersion9 + +const ( + Service_Ping_FullMethodName = "/Service/Ping" +) + +// ServiceClient is the client API for Service 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 ServiceClient interface { + Ping(ctx context.Context, in *PingMessage, opts ...grpc.CallOption) (*PingMessage, error) +} + +type serviceClient struct { + cc grpc.ClientConnInterface +} + +func NewServiceClient(cc grpc.ClientConnInterface) ServiceClient { + return &serviceClient{cc} +} + +func (c *serviceClient) Ping(ctx context.Context, in *PingMessage, opts ...grpc.CallOption) (*PingMessage, error) { + cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...) + out := new(PingMessage) + err := c.cc.Invoke(ctx, Service_Ping_FullMethodName, in, out, cOpts...) + if err != nil { + return nil, err + } + return out, nil +} + +// ServiceServer is the server API for Service service. +// All implementations must embed UnimplementedServiceServer +// for forward compatibility. +type ServiceServer interface { + Ping(context.Context, *PingMessage) (*PingMessage, error) + mustEmbedUnimplementedServiceServer() +} + +// UnimplementedServiceServer must be embedded to have +// forward compatible implementations. +// +// NOTE: this should be embedded by value instead of pointer to avoid a nil +// pointer dereference when methods are called. +type UnimplementedServiceServer struct{} + +func (UnimplementedServiceServer) Ping(context.Context, *PingMessage) (*PingMessage, error) { + return nil, status.Error(codes.Unimplemented, "method Ping not implemented") +} +func (UnimplementedServiceServer) mustEmbedUnimplementedServiceServer() {} +func (UnimplementedServiceServer) testEmbeddedByValue() {} + +// UnsafeServiceServer may be embedded to opt out of forward compatibility for this service. +// Use of this interface is not recommended, as added methods to ServiceServer will +// result in compilation errors. +type UnsafeServiceServer interface { + mustEmbedUnimplementedServiceServer() +} + +func RegisterServiceServer(s grpc.ServiceRegistrar, srv ServiceServer) { + // If the following call panics, it indicates UnimplementedServiceServer was + // embedded by pointer and is nil. This will cause panics if an + // unimplemented method is ever invoked, so we test this at initialization + // time to prevent it from happening at runtime later due to I/O. + if t, ok := srv.(interface{ testEmbeddedByValue() }); ok { + t.testEmbeddedByValue() + } + s.RegisterService(&Service_ServiceDesc, srv) +} + +func _Service_Ping_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) { + in := new(PingMessage) + if err := dec(in); err != nil { + return nil, err + } + if interceptor == nil { + return srv.(ServiceServer).Ping(ctx, in) + } + info := &grpc.UnaryServerInfo{ + Server: srv, + FullMethod: Service_Ping_FullMethodName, + } + handler := func(ctx context.Context, req interface{}) (interface{}, error) { + return srv.(ServiceServer).Ping(ctx, req.(*PingMessage)) + } + return interceptor(ctx, in, info, handler) +} + +// Service_ServiceDesc is the grpc.ServiceDesc for Service service. +// It's only intended for direct use with grpc.RegisterService, +// and not to be introspected or modified (even as a copy) +var Service_ServiceDesc = grpc.ServiceDesc{ + ServiceName: "Service", + HandlerType: (*ServiceServer)(nil), + Methods: []grpc.MethodDesc{ + { + MethodName: "Ping", + Handler: _Service_Ping_Handler, + }, + }, + Streams: []grpc.StreamDesc{}, + Metadata: "proto/service.proto", +} diff --git a/service.go b/service.go new file mode 100644 index 0000000..8105ff2 --- /dev/null +++ b/service.go @@ -0,0 +1,16 @@ +package main + +import ( + "context" + "gogrpc/proto" +) + +type Service struct { + proto.UnimplementedServiceServer +} + +func (s *Service) Ping(context.Context, *proto.PingMessage) (*proto.PingMessage, error) { + return &proto.PingMessage{Message: "pong"}, nil +} + +var _ proto.ServiceServer = (*Service)(nil)