/
file.go
108 lines (96 loc) · 2.48 KB
/
file.go
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package protogen
import (
"fmt"
"io"
"github.com/nokamoto/grpc-tryout/pkg/apis/tryout"
"google.golang.org/protobuf/types/descriptorpb"
"google.golang.org/protobuf/types/pluginpb"
)
type fileDesc struct {
req *pluginpb.CodeGeneratorRequest
desc *descriptorpb.FileDescriptorProto
debug io.Writer
}
func (d fileDesc) debugf(format string, args ...any) {
debugf(2, d.debug, format, args...)
}
func (d fileDesc) message(typ string) (*descriptorpb.DescriptorProto, error) {
for _, f := range d.req.GetProtoFile() {
for _, m := range f.GetMessageType() {
name := fmt.Sprintf(".%s.%s", f.GetPackage(), m.GetName())
if name == typ {
return m, nil
}
}
}
return nil, fmt.Errorf("not found: %s", typ)
}
func (d fileDesc) proto() (*tryout.Proto, error) {
var services []*tryout.Service
for _, s := range d.desc.GetService() {
d.debugf("service: %s.%s", d.desc.GetPackage(), s.GetName())
service, err := serviceDesc{
fileDesc: d,
desc: s,
}.service()
if err != nil {
return nil, err
}
services = append(services, service)
}
if len(services) == 0 {
return nil, nil
}
return &tryout.Proto{
Name: d.desc.GetName(),
Services: services,
}, nil
}
type serviceDesc struct {
fileDesc
desc *descriptorpb.ServiceDescriptorProto
}
func (d serviceDesc) debugf(format string, args ...any) {
debugf(4, d.debug, format, args...)
}
func (d serviceDesc) service() (*tryout.Service, error) {
var methods []*tryout.Method
for _, m := range d.desc.GetMethod() {
d.debugf("method: %s(%s)", m.GetName(), m.GetInputType())
method, err := methodDesc{
serviceDesc: d,
desc: m,
}.method()
if err != nil {
return nil, err
}
methods = append(methods, method)
}
return &tryout.Service{
Name: d.desc.GetName(),
Methods: methods,
}, nil
}
type methodDesc struct {
serviceDesc
desc *descriptorpb.MethodDescriptorProto
}
func (d methodDesc) debugf(format string, args ...any) {
debugf(6, d.debug, format, args...)
}
func (d methodDesc) method() (*tryout.Method, error) {
inputType, err := d.message(d.desc.GetInputType())
if err != nil {
return nil, err
}
var fields []string
for _, field := range inputType.GetField() {
d.debugf("field: %s %s %s", field.GetName(), field.GetType(), field.GetTypeName())
fields = append(fields, field.GetJsonName())
}
return &tryout.Method{
Name: d.desc.GetName(),
Path: fmt.Sprintf("/%s.%s/%s", d.fileDesc.desc.GetPackage(), d.serviceDesc.desc.GetName(), d.desc.GetName()),
Fields: fields,
}, nil
}