109 lines
2.8 KiB
Go
109 lines
2.8 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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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 util
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import (
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"crypto"
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"fmt"
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"net/url"
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"os"
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"path/filepath"
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"github.com/golang/glog"
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download "github.com/jimmidyson/go-download"
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"github.com/pkg/errors"
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"k8s.io/minikube/pkg/minikube/constants"
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)
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const fileScheme = "file"
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type ISODownloader interface {
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GetISOFileURI(isoURL string) string
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CacheMinikubeISOFromURL(isoURL string) error
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}
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type DefaultDownloader struct{}
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func (f DefaultDownloader) GetISOFileURI(isoURL string) string {
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urlObj, err := url.Parse(isoURL)
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if err != nil {
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return isoURL
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}
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if urlObj.Scheme == fileScheme {
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return isoURL
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}
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isoPath := filepath.Join(constants.GetMinipath(), "cache", "iso", filepath.Base(isoURL))
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// As this is a file URL there should be no backslashes regardless of platform running on.
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return "file://" + filepath.ToSlash(isoPath)
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}
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func (f DefaultDownloader) CacheMinikubeISOFromURL(isoURL string) error {
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if !f.ShouldCacheMinikubeISO(isoURL) {
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glog.Infof("Not caching ISO, using %s", isoURL)
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return nil
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}
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options := download.FileOptions{
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Mkdirs: download.MkdirAll,
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Options: download.Options{
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ProgressBars: &download.ProgressBarOptions{
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MaxWidth: 80,
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},
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},
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}
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// Validate the ISO if it was the default URL, before writing it to disk.
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if isoURL == constants.DefaultIsoUrl {
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options.Checksum = constants.DefaultIsoShaUrl
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options.ChecksumHash = crypto.SHA256
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}
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fmt.Println("Downloading Minikube ISO")
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if err := download.ToFile(isoURL, f.GetISOCacheFilepath(isoURL), options); err != nil {
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return errors.Wrap(err, "Error downloading Minikube ISO")
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}
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return nil
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}
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func (f DefaultDownloader) ShouldCacheMinikubeISO(isoURL string) bool {
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// store the miniube-iso inside the .minikube dir
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urlObj, err := url.Parse(isoURL)
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if err != nil {
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return false
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}
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if urlObj.Scheme == fileScheme {
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return false
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}
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if f.IsMinikubeISOCached(isoURL) {
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return false
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}
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return true
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}
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func (f DefaultDownloader) GetISOCacheFilepath(isoURL string) string {
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return filepath.Join(constants.GetMinipath(), "cache", "iso", filepath.Base(isoURL))
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}
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func (f DefaultDownloader) IsMinikubeISOCached(isoURL string) bool {
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if _, err := os.Stat(f.GetISOCacheFilepath(isoURL)); os.IsNotExist(err) {
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return false
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}
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return true
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}
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