143 lines
2.9 KiB
Go
143 lines
2.9 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package file
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import (
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"os"
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"path/filepath"
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"github.com/golang/glog"
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"k8s.io/kubernetes/pkg/util/filesystem"
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)
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// Filesystem is an interface that we can use to mock various filesystem operations
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type Filesystem interface {
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filesystem.Filesystem
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}
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// NewLocalFS implements Filesystem using same-named functions from "os" and "io/ioutil".
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func NewLocalFS() (Filesystem, error) {
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fs := filesystem.DefaultFs{}
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err := initialize(false, fs)
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if err != nil {
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return nil, err
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}
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return fs, nil
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}
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// NewFakeFS creates an in-memory filesystem with all the required
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// paths used by the ingress controller.
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// This allows running test without polluting the local machine.
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func NewFakeFS() (Filesystem, error) {
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fs := filesystem.NewFakeFs()
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err := initialize(true, fs)
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if err != nil {
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return nil, err
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}
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return fs, nil
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}
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// initialize creates the required directory structure and when
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// runs as virtual filesystem it copies the local files to it
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func initialize(isVirtual bool, fs Filesystem) error {
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for _, directory := range directories {
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err := fs.MkdirAll(directory, 0655)
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if err != nil {
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return err
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}
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}
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if !isVirtual {
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return nil
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}
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for _, file := range files {
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f, err := fs.Create(file)
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if err != nil {
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return err
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}
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_, err = f.Write([]byte(""))
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if err != nil {
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return err
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}
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err = f.Close()
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if err != nil {
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return err
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}
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}
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err := fs.MkdirAll("/proc", 0655)
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if err != nil {
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return err
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}
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glog.Info("Restoring generated (go-bindata) assets in virtual filesystem...")
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for _, assetName := range AssetNames() {
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err := restoreAsset("/", assetName, fs)
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if err != nil {
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return err
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}
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}
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return nil
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}
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// restoreAsset restores an asset under the given directory
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func restoreAsset(dir, name string, fs Filesystem) error {
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data, err := Asset(name)
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if err != nil {
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return err
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}
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info, err := AssetInfo(name)
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if err != nil {
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return err
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}
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err = fs.MkdirAll(_filePath(dir, filepath.Dir(name)), os.FileMode(0755))
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if err != nil {
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return err
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}
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f, err := fs.Create(_filePath(dir, name))
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if err != nil {
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return err
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}
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_, err = f.Write(data)
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if err != nil {
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return err
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}
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err = f.Close()
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if err != nil {
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return err
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}
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//Missing info.Mode()
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err = fs.Chtimes(_filePath(dir, name), info.ModTime(), info.ModTime())
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if err != nil {
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return err
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}
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return nil
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}
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