Initial boilerplate

encoder.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+	"github.com/golang/protobuf/protoc-gen-go/descriptor"
+	"github.com/golang/protobuf/protoc-gen-go/plugin"
+)
+
+type GenericTemplateBasedEncoder struct {
+	service *descriptor.ServiceDescriptorProto
+	file    *descriptor.FileDescriptorProto
+}
+
+func NewGenericTemplateBasedEncoder(service *descriptor.ServiceDescriptorProto, file *descriptor.FileDescriptorProto) (e *GenericTemplateBasedEncoder) {
+	e = &GenericTemplateBasedEncoder{
+		service: service,
+		file:    file,
+	}
+	return
+}
+
+func (e *GenericTemplateBasedEncoder) Files() []*plugin_go.CodeGeneratorResponse_File {
+	var content string = "hello world"
+	var fileName string = "test.txt"
+	return []*plugin_go.CodeGeneratorResponse_File{
+		&plugin_go.CodeGeneratorResponse_File{
+			Content: &content,
+			Name:    &fileName,
+		},
+	}
+}

main.go

@@ -0,0 +1,49 @@
+package main
+
+import (
+	"io/ioutil"
+	"os"
+
+	"github.com/golang/protobuf/proto"
+	"github.com/golang/protobuf/protoc-gen-go/generator"
+)
+
+func main() {
+	g := generator.New()
+
+	data, err := ioutil.ReadAll(os.Stdin)
+	if err != nil {
+		g.Error(err, "reading input")
+	}
+
+	if err := proto.Unmarshal(data, g.Request); err != nil {
+		g.Error(err, "parsing input proto")
+	}
+
+	if len(g.Request.FileToGenerate) == 0 {
+		g.Fail("no files to generate")
+	}
+
+	g.CommandLineParameters(g.Request.GetParameter())
+
+	// Generate the clients
+	for _, file := range g.Request.GetProtoFile() {
+		for _, service := range file.GetService() {
+			encoder := NewGenericTemplateBasedEncoder(service, file)
+			g.Response.File = append(g.Response.File, encoder.Files()...)
+		}
+	}
+
+	// Generate the protobufs
+	g.GenerateAllFiles()
+
+	data, err = proto.Marshal(g.Response)
+	if err != nil {
+		g.Error(err, "failed to marshal output proto")
+	}
+
+	_, err = os.Stdout.Write(data)
+	if err != nil {
+		g.Error(err, "failed to write output proto")
+	}
+}