kops/upup/models/vfs.go

136 lines
2.8 KiB
Go

/*
Copyright 2016 The Kubernetes Authors.
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
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 models
import (
"errors"
"os"
"path"
"strings"
_ "github.com/google/cadvisor/pages/static"
"k8s.io/kops/util/pkg/vfs"
)
var ReadOnlyError = errors.New("AssetPath is read-only")
type AssetPath struct {
location string
}
var _ vfs.Path = &AssetPath{}
func NewAssetPath(location string) *AssetPath {
a := &AssetPath{
location: location,
}
return a
}
func (p *AssetPath) Join(relativePath ...string) vfs.Path {
args := []string{p.location}
args = append(args, relativePath...)
joined := path.Join(args...)
return &AssetPath{location: joined}
}
func (p *AssetPath) WriteFile(data []byte, acl vfs.ACL) error {
return ReadOnlyError
}
func (p *AssetPath) CreateFile(data []byte, acl vfs.ACL) error {
return ReadOnlyError
}
func (p *AssetPath) ReadFile() ([]byte, error) {
data, err := Asset(p.location)
if err != nil {
// Yuk
if strings.Contains(err.Error(), "not found") {
return nil, os.ErrNotExist
}
}
return data, err
}
func (p *AssetPath) ReadDir() ([]vfs.Path, error) {
files, err := AssetDir(p.location)
if err != nil {
// Yuk
if strings.Contains(err.Error(), "not found") {
return nil, os.ErrNotExist
}
return nil, err
}
var paths []vfs.Path
for _, f := range files {
paths = append(paths, NewAssetPath(path.Join(p.location, f)))
}
return paths, nil
}
func (p *AssetPath) ReadTree() ([]vfs.Path, error) {
var paths []vfs.Path
err := readTree(p.location, &paths)
if err != nil {
return nil, err
}
return paths, nil
}
func readTree(base string, dest *[]vfs.Path) error {
files, err := AssetDir(base)
if err != nil {
// Yuk
if strings.Contains(err.Error(), "not found") {
return os.ErrNotExist
}
return err
}
for _, f := range files {
p := path.Join(base, f)
*dest = append(*dest, NewAssetPath(p))
// We always assume a directory, but ignore if not found
// This is because go-bindata doesn't support FileInfo on directories :-(
{
err = readTree(p, dest)
if err != nil && !os.IsNotExist(err) {
return err
}
}
}
return nil
}
func (p *AssetPath) Base() string {
return path.Base(p.location)
}
func (p *AssetPath) Path() string {
return p.location
}
func (p *AssetPath) String() string {
return p.Path()
}
func (p *AssetPath) Remove() error {
return ReadOnlyError
}