pkg/bufman/bufpkg/bufimage/validate.go

// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements.  See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You 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
//
//     http://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 bufimage

import (
	"errors"
	"fmt"
)

import (
	imagev1 "github.com/apache/dubbo-kubernetes/pkg/bufman/gen/proto/go/image/v1"
)

// we validate the actual fields of the FileDescriptorProtos as part of newImageFile
func validateProtoImage(protoImage *imagev1.Image) error {
	if protoImage == nil {
		return errors.New("nil Image")
	}
	if len(protoImage.File) == 0 {
		return errors.New("image contains no files")
	}
	for _, protoImageFile := range protoImage.File {
		if err := validateProtoImageFile(protoImageFile); err != nil {
			return err
		}
	}
	return nil
}

func validateProtoImageFile(protoImageFile *imagev1.ImageFile) error {
	if protoImageFileExtension := protoImageFile.GetBufExtension(); protoImageFileExtension != nil {
		lenDependencies := len(protoImageFile.GetDependency())
		for _, index := range protoImageFileExtension.GetUnusedDependency() {
			if int(index) >= lenDependencies || int(index) < 0 {
				return fmt.Errorf("unused dependency index %d is out of range", index)
			}
		}
		if protoModuleInfo := protoImageFileExtension.GetModuleInfo(); protoModuleInfo != nil {
			return validateProtoModuleInfo(protoModuleInfo)
		}
	}
	return nil
}

func validateProtoModuleInfo(protoModuleInfo *imagev1.ModuleInfo) error {
	if protoModuleName := protoModuleInfo.GetName(); protoModuleName != nil {
		return validateProtoModuleName(protoModuleInfo.Name)
	}
	return nil
}

func validateProtoModuleName(protoModuleName *imagev1.ModuleName) error {
	if protoModuleName.GetRemote() == "" {
		return errors.New("empty ModuleName.Remote")
	}
	if protoModuleName.GetOwner() == "" {
		return errors.New("empty ModuleName.Owner")
	}
	if protoModuleName.GetRepository() == "" {
		return errors.New("empty ModuleName.Repository")
	}
	return nil
}