arran 🇦🇺

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  • 11 Comments
Joined 1 year ago
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Cake day: September 23rd, 2023

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  • I asked chatgpt to write a go program for this, this looks roughly correct (I have used both libraries before) obviously this won’t be enough for your particular use case. I imagine you can integrate an RSS feed to your site, however if you’re using something like hugo perhaps output it as a csv.

    Super low effort but a good start I think:

    package main
    
    import (
    	"fmt"
    	"log"
    	"os"
    	"strings"
    	"time"
    
    	git "github.com/go-git/go-git/v5"
    	rss "github.com/jteeuwen/go-pkg-rss"
    )
    
    const (
    	timeout = 5 // timeout in seconds for the RSS feed generation
    )
    
    // Repository represents a git repository with its URL
    type Repository struct {
    	URL string
    }
    
    // Repositories is the list of git repositories
    var Repositories = []Repository{
    	{URL: "https://github.com/owner/repo1"},
    	{URL: "https://github.com/owner/repo2"},
    	// Add more repositories here
    }
    
    // FetchLatestTag fetches the latest tag from a git repository
    func FetchLatestTag(repoURL string) (string, string, error) {
    	// Clone the repository to a temporary directory
    	dir, err := os.MkdirTemp("", "repo")
    	if err != nil {
    		return "", "", err
    	}
    	defer os.RemoveAll(dir)
    
    	_, err = git.PlainClone(dir, true, &git.CloneOptions{
    		URL:      repoURL,
    		Progress: os.Stdout,
    	})
    	if err != nil {
    		return "", "", err
    	}
    
    	repo, err := git.PlainOpen(dir)
    	if err != nil {
    		return "", "", err
    	}
    
    	tags, err := repo.Tags()
    	if err != nil {
    		return "", "", err
    	}
    
    	var latestTag string
    	var latestCommitTime time.Time
    
    	err = tags.ForEach(func(ref *plumbing.Reference) error {
    		tag := ref.Name().Short()
    		commit, err := repo.CommitObject(ref.Hash())
    		if err != nil {
    			return err
    		}
    		if commit.Committer.When.After(latestCommitTime) {
    			latestCommitTime = commit.Committer.When
    			latestTag = tag
    		}
    		return nil
    	})
    	if err != nil {
    		return "", "", err
    	}
    
    	return latestTag, latestCommitTime.Format(time.RFC1123Z), nil
    }
    
    // GenerateRSS generates an RSS feed from the latest tags of the repositories
    func GenerateRSS() string {
    	feed := rss.Feed{
    		Title:       "Latest Tags from Git Repositories",
    		Link:        &rss.Link{Href: "http://example.com/"},
    		Description: "This feed provides the latest tags from a list of git repositories.",
    		Created:     time.Now(),
    	}
    
    	for _, repo := range Repositories {
    		tag, date, err := FetchLatestTag(repo.URL)
    		if err != nil {
    			log.Printf("Error fetching latest tag for repository %s: %v", repo.URL, err)
    			continue
    		}
    		feed.Items = append(feed.Items, &rss.Item{
    			Title:       fmt.Sprintf("Latest tag for %s: %s", repo.URL, tag),
    			Link:        &rss.Link{Href: repo.URL},
    			Description: fmt.Sprintf("The latest tag for repository %s is %s, created on %s.", repo.URL, tag, date),
    			Created:     time.Now(),
    		})
    	}
    
    	var rssFeed strings.Builder
    	rssFeed.WriteString(xml.Header)
    	if err := feed.Write(&rssFeed); err != nil {
    		log.Fatalf("Error generating RSS feed: %v", err)
    	}
    
    	return rssFeed.String()
    }
    
    func main() {
    	rssFeed := GenerateRSS()
    	fmt.Println(rssFeed)
    }
    







  • The busybox one seems great as it comes with shells. php looks like it would add some issues.

    Personally since I use go, I would create a go embedded app, which I would make a deb, rpm, and a dockerfile using “goreleaser”

    package main
    
    import (
    	"embed"
    	"net/http"
    )
    
    //go:embed static/*
    var content embed.FS
    
    func main() {
    	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
    		// Serve index.html as the default page
    		http.ServeContent(w, r, "index.html", nil, content)
    	})
    
    	// Serve static files
    	http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.FS(content))))
    
    	// Start the server
    	http.ListenAndServe(":8080", nil)
    }
    

    Would be all the code but allows for expansion later. However the image goreleaser builds doesn’t come with busybox on it so you can’t docker exec into it. https://goreleaser.com/customization/docker/

    Most of the other options including the PHP one seem to include a scripting language or a bunch of other system tools etc. I think that’s overkill