global config creator

common/type.go

@@ -0,0 +1,31 @@
+package common
+
+import (
+	"context"
+	"errors"
+	"reflect"
+)
+
+type creator func(ctx context.Context, config interface{}) (interface{}, error)
+
+var (
+	typeCreatorRegistry = make(map[reflect.Type]creator)
+)
+
+func RegisterConfig(config interface{}, configCreator creator) error {
+	configType := reflect.TypeOf(config)
+	if _, found := typeCreatorRegistry[configType]; found {
+		return errors.New("Common: " + configType.Name() + " is already registered.")
+	}
+	typeCreatorRegistry[configType] = configCreator
+	return nil
+}
+
+func CreateObject(ctx context.Context, config interface{}) (interface{}, error) {
+	configType := reflect.TypeOf(config)
+	creator, found := typeCreatorRegistry[configType]
+	if !found {
+		return nil, errors.New("Common: " + configType.Name() + " is not registered.")
+	}
+	return creator(ctx, config)
+}