micro/server/extractor.go

84 lines
1.3 KiB
Go

package server
import (
"fmt"
"reflect"
"github.com/myodc/go-micro/registry"
)
func extractValue(v reflect.Type) *registry.Value {
if v == nil {
return nil
}
if v.Kind() == reflect.Ptr {
v = v.Elem()
}
arg := &registry.Value{
Name: v.Name(),
Type: v.Name(),
}
if v.Kind() == reflect.Struct {
for i := 0; i < v.NumField(); i++ {
val := extractValue(v.Field(i).Type)
val.Name = v.Field(i).Name
arg.Values = append(arg.Values, val)
}
}
return arg
}
func extractEndpoint(method reflect.Method) *registry.Endpoint {
if method.PkgPath != "" {
return nil
}
var rspType, reqType reflect.Type
var stream bool
mt := method.Type
switch mt.NumIn() {
case 3:
reqType = mt.In(1)
rspType = mt.In(2)
case 4:
reqType = mt.In(2)
rspType = mt.In(3)
default:
return nil
}
if rspType.Kind() == reflect.Func {
stream = true
}
request := extractValue(reqType)
response := extractValue(rspType)
return &registry.Endpoint{
Name: method.Name,
Request: request,
Response: response,
Metadata: map[string]string{
"stream": fmt.Sprintf("%v", stream),
},
}
}
func extractSubValue(typ reflect.Type) *registry.Value {
var reqType reflect.Type
switch typ.NumIn() {
case 1:
reqType = typ.In(0)
case 2:
reqType = typ.In(1)
default:
return nil
}
return extractValue(reqType)
}