95 lines
2.2 KiB
Go
95 lines
2.2 KiB
Go
/*
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Copyright 2021 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 main
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import (
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"fmt"
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"os"
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"path/filepath"
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"regexp"
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"strconv"
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"k8s.io/klog/v2"
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"k8s.io/minikube/hack/update"
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)
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const (
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preloadFile = "pkg/minikube/download/preload.go"
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preloadVersionRE = `v[0-9]*`
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)
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var (
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schema = map[string]update.Item{
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preloadFile: {
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Replace: map[string]string{
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`PreloadVersion = "v[0-9]*"`: `PreloadVersion = "v{{.UpdateVersion}}"`,
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},
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},
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}
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)
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// Data holds updated preload version.
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type Data struct {
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UpdateVersion string
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}
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func main() {
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// Get current preload version.
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vCurrent, err := getPreloadVersion()
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if err != nil {
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klog.Fatalf("failed to get current preload version: %v", err)
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}
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if vCurrent == 0 {
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klog.Fatalf("cannot determine current preload version")
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}
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klog.Infof("current preload version: %d", vCurrent)
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// Update preload version.
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updatedVersion := vCurrent + 1
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data := Data{UpdateVersion: fmt.Sprint(updatedVersion)}
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klog.Infof("updated preload version: %s", data.UpdateVersion)
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update.Apply(schema, data)
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}
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// getPreloadVersion returns current preload version and any error.
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func getPreloadVersion() (int, error) {
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blob, err := os.ReadFile(filepath.Join(update.FSRoot, preloadFile))
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if err != nil {
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return 0, err
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}
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// Match PreloadVersion.
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re := regexp.MustCompile(fmt.Sprintf(`PreloadVersion = "%s"`, preloadVersionRE))
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version := re.FindSubmatch(blob)
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if version == nil {
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return 0, nil
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}
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// Match version within PreloadVersion.
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re = regexp.MustCompile(preloadVersionRE)
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version = re.FindSubmatch(version[0])
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if version == nil {
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return 0, nil
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}
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// Convert to integer, drop 'v'.
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current, err := strconv.Atoi(string(version[0])[1:])
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if err != nil {
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return 0, err
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}
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return current, nil
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}
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