Migrate yang models in monorepo

Related to #187 (closed)

forks/google/gnmi/model.go

-/* Copyright 2017 Google Inc.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    https://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package gnmi
-
-import (
-	"errors"
-	"fmt"
-	"reflect"
-	"sort"
-
-	"github.com/openconfig/goyang/pkg/yang"
-	"github.com/openconfig/ygot/ygot"
-	"github.com/openconfig/ygot/ytypes"
-
-	pb "github.com/openconfig/gnmi/proto/gnmi"
-)
-
-// JSONUnmarshaler is the signature of the Unmarshal() function in the GoStruct code generated by openconfig ygot library.
-type JSONUnmarshaler func([]byte, ygot.GoStruct, ...ytypes.UnmarshalOpt) error
-
-// GoStructEnumData is the data type to maintain GoStruct enum type.
-type GoStructEnumData map[string]map[int64]ygot.EnumDefinition
-
-// Model contains the model data and GoStruct information for the device to config.
-type Model struct {
-	modelData       []*pb.ModelData
-	structRootType  reflect.Type
-	schemaTreeRoot  *yang.Entry
-	jsonUnmarshaler JSONUnmarshaler
-	enumData        GoStructEnumData
-}
-
-// NewModel returns an instance of Model struct.
-func NewModel(m []*pb.ModelData, t reflect.Type, r *yang.Entry, f JSONUnmarshaler, e GoStructEnumData) *Model {
-	return &Model{
-		modelData:       m,
-		structRootType:  t,
-		schemaTreeRoot:  r,
-		jsonUnmarshaler: f,
-		enumData:        e,
-	}
-}
-
-func (m *Model) newRootValue() interface{} {
-	return reflect.New(m.structRootType.Elem()).Interface()
-}
-
-// NewConfigStruct creates a ValidatedGoStruct of this model from jsonConfig. If jsonConfig is nil, creates an empty GoStruct.
-func (m *Model) NewConfigStruct(jsonConfig []byte) (ygot.ValidatedGoStruct, error) {
-	rootStruct, ok := m.newRootValue().(ygot.ValidatedGoStruct)
-	if !ok {
-		return nil, errors.New("root node is not a ygot.ValidatedGoStruct")
-	}
-
-	return rootStruct, nil
-}
-
-// SupportedModels returns a list of supported models.
-func (m *Model) SupportedModels() []string {
-	mDesc := make([]string, len(m.modelData))
-	for i, m := range m.modelData {
-		mDesc[i] = fmt.Sprintf("%s %s", m.Name, m.Version)
-	}
-	sort.Strings(mDesc)
-	return mDesc
-}