145 lines
4.1 KiB
Go
145 lines
4.1 KiB
Go
package main
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import (
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"fmt"
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"log"
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"regexp"
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"strconv"
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"strings"
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"time"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/session"
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"github.com/aws/aws-sdk-go/service/s3"
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"github.com/spf13/cobra"
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)
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type LoraxResult struct {
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Architecture string
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Major string
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Minor string
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Date time.Time
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File string
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FilePath string
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}
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func FindRecentISOs(bucketName string, prefix string, version string) ([]LoraxResult, error) {
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s3session := session.Must(session.NewSession())
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svc := s3.New(s3session, &aws.Config{Region: aws.String("us-east-2")})
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result := []LoraxResult{}
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parts := strings.Split(version, ".")
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major := parts[0]
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// minor := parts[1]
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if prefix == "" {
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prefix = fmt.Sprintf("buildiso-%s-", major)
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}
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// Build the S3 key prefix for the given parameters
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// @todo: support passing the other parameters
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keyPrefix := fmt.Sprintf("%s", prefix)
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log.Printf("Looking for isos in the following format: %s", keyPrefix)
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var items []*s3.Object
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// List the objects in the S3 bucket with the given prefix
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input := &s3.ListObjectsV2Input{
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Bucket: aws.String(bucketName),
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Prefix: aws.String(keyPrefix),
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}
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err := svc.ListObjectsV2Pages(input, func(page *s3.ListObjectsV2Output, lastPage bool) bool {
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items = append(items, page.Contents...)
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return true
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})
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log.Printf("Found %d matches for prefix", len(items))
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if err != nil {
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log.Fatalf("uh oh: %v", err)
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}
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pattern := regexp.MustCompile(`(?P<whole>buildiso-(\d+)-(\w+)/(?P<datestamp>[0-9]+)/(?P<file>lorax-(?P<major>\d+)\.(?P<minor>\d)-(?P<architecture>\w+).tar.gz))$`)
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// Loop through the objects and find the latest one for each file type
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latestISOs := map[string]*LoraxResult{}
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for _, obj := range items {
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key := *obj.Key
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match := pattern.FindStringSubmatch(key)
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if len(match) == 0 {
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// log.Printf("key did not match pattern, %s : %s\n", key, pattern)
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continue
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}
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// log.Printf("found a match: %s", key)
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date, err := strconv.ParseInt(match[pattern.SubexpIndex("datestamp")], 10, 64)
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if err != nil {
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log.Fatalf("uh oh dates are fun! %v", err)
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}
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iso := LoraxResult{
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Architecture: match[pattern.SubexpIndex("architecture")],
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Major: match[pattern.SubexpIndex("major")],
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Minor: match[pattern.SubexpIndex("minor")],
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FilePath: match[pattern.SubexpIndex("whole")],
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File: match[pattern.SubexpIndex("file")],
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Date: time.Unix(date, 0),
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}
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// log.Printf("iso is: %v", iso)
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latest, ok := latestISOs[iso.Architecture]
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// log.Printf("latest, ok: %v, %t", latest, ok)
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if !ok || iso.Date.After(latest.Date) {
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latestISOs[iso.Architecture] = &iso
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}
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}
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for _, iso := range latestISOs {
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result = append(result, *iso)
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}
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return result, nil
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}
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func main() {
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var bucket, prefix, imageType, variant, fileType, date string
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// Set up the root command with flags
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var rootCmd = &cobra.Command{
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Use: "find-latest-isos VERSION",
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Short: "Lists the most recent S3 images based on certain criteria",
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Long: `Lists the most recent S3 images based on the image version, type, variant, and date`,
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Args: cobra.ExactArgs(1),
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Run: func(cmd *cobra.Command, args []string) {
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// version is the only positional arg.
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version := args[0]
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// Call the function to list the S3 images based on the provided criteria
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res, err := FindRecentISOs(bucket, prefix, version)
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if err != nil {
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fmt.Println(fmt.Errorf("IDK yo: %v", err))
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}
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for _, image := range res {
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fmt.Println(image)
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}
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},
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}
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// Set up the command flags
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rootCmd.Flags().StringVar(&bucket, "bucket", "resf-empanadas", "The name of the S3 bucket")
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rootCmd.Flags().StringVar(&prefix, "prefix", "", "The prefix for the S3 key")
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rootCmd.Flags().StringVar(&imageType, "type", "", "The image type")
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rootCmd.Flags().StringVar(&variant, "variant", "", "The image variant")
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rootCmd.Flags().StringVar(&fileType, "file-type", "", "The image file type")
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rootCmd.Flags().StringVar(&date, "date", time.Now().Format("20060102"), "The date of the images to list (in YYYYMMDD format)")
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// Set up the CLI
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if err := rootCmd.Execute(); err != nil {
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fmt.Println("Error:", err)
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}
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}
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