mugit/internal/mirror/mirror.go (view raw)
Oleksandr Smirnov
Oleksandr Smirnov
olexsmir@gmail.com mirror: sync on mirror repo creation, 2 months ago
olexsmir@gmail.com mirror: sync on mirror repo creation, 2 months ago
| 1 | package mirror |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "fmt" |
| 7 | "log/slog" |
| 8 | "os" |
| 9 | "path/filepath" |
| 10 | "strings" |
| 11 | "sync" |
| 12 | "time" |
| 13 | |
| 14 | "golang.org/x/sync/semaphore" |
| 15 | "olexsmir.xyz/mugit/internal/config" |
| 16 | "olexsmir.xyz/mugit/internal/git" |
| 17 | ) |
| 18 | |
| 19 | func IsRemoteSupported(remote string) error { |
| 20 | if !strings.HasPrefix(remote, "http") { |
| 21 | return fmt.Errorf("only http and https remotes are supported") |
| 22 | } |
| 23 | return nil |
| 24 | } |
| 25 | |
| 26 | func IsGithubRemote(remoteURL string) bool { |
| 27 | return strings.Contains(remoteURL, "github.com") |
| 28 | } |
| 29 | |
| 30 | type Worker struct { |
| 31 | c *config.Config |
| 32 | } |
| 33 | |
| 34 | func NewWorker(cfg *config.Config) *Worker { |
| 35 | return &Worker{ |
| 36 | c: cfg, |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | func (w *Worker) Start(ctx context.Context) error { |
| 41 | ticker := time.NewTicker(w.c.Mirror.Interval) |
| 42 | defer ticker.Stop() |
| 43 | |
| 44 | for { |
| 45 | select { |
| 46 | case <-ctx.Done(): |
| 47 | return nil |
| 48 | default: |
| 49 | if err := w.mirror(ctx); err != nil { |
| 50 | slog.Error("mirror sync failed", "err", err) |
| 51 | } |
| 52 | |
| 53 | <-ticker.C |
| 54 | } |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | func (w *Worker) SyncRepo(ctx context.Context, name string) error { |
| 59 | path, err := git.ResolvePath(w.c.Repo.Dir, git.ResolveName(name)) |
| 60 | if err != nil { |
| 61 | return fmt.Errorf("failed to resolve repo path: %w", err) |
| 62 | } |
| 63 | |
| 64 | repo, err := git.Open(path, "") |
| 65 | if err != nil { |
| 66 | return fmt.Errorf("failed to open repo: %w", err) |
| 67 | } |
| 68 | |
| 69 | isMirror, err := repo.IsMirror() |
| 70 | if err != nil { |
| 71 | return fmt.Errorf("failed to check mirror status: %w", err) |
| 72 | } |
| 73 | if !isMirror { |
| 74 | return fmt.Errorf("repository is not a mirror") |
| 75 | } |
| 76 | |
| 77 | return w.syncRepo(ctx, repo) |
| 78 | } |
| 79 | |
| 80 | func (w *Worker) mirror(ctx context.Context) error { |
| 81 | repos, err := w.findMirrorRepos() |
| 82 | if err != nil { |
| 83 | return err |
| 84 | } |
| 85 | |
| 86 | var wg sync.WaitGroup |
| 87 | sem := semaphore.NewWeighted(10) |
| 88 | errCh := make(chan error, len(repos)) |
| 89 | |
| 90 | for _, repo := range repos { |
| 91 | wg.Go(func() { |
| 92 | if err := sem.Acquire(ctx, 1); err != nil { |
| 93 | errCh <- err |
| 94 | return |
| 95 | } |
| 96 | defer sem.Release(1) |
| 97 | |
| 98 | if err := w.syncRepo(ctx, repo); err != nil { |
| 99 | errCh <- err |
| 100 | } |
| 101 | }) |
| 102 | } |
| 103 | |
| 104 | wg.Wait() |
| 105 | close(errCh) |
| 106 | |
| 107 | var errs []error |
| 108 | for err := range errCh { |
| 109 | errs = append(errs, err) |
| 110 | } |
| 111 | return errors.Join(errs...) |
| 112 | } |
| 113 | |
| 114 | func (w *Worker) syncRepo(ctx context.Context, repo *git.Repo) error { |
| 115 | name := repo.Name() |
| 116 | slog.Info("mirror: sync started", "repo", name) |
| 117 | |
| 118 | remoteURL, err := repo.RemoteURL() |
| 119 | if err != nil { |
| 120 | slog.Error("mirror: failed to get remote url", "repo", name, "err", err) |
| 121 | return err |
| 122 | } |
| 123 | |
| 124 | if err := IsRemoteSupported(remoteURL); err != nil { |
| 125 | slog.Error("mirror: remote is not valid", "repo", name, "err", err) |
| 126 | return err |
| 127 | } |
| 128 | |
| 129 | if IsGithubRemote(remoteURL) && w.c.Mirror.GithubToken != "" { |
| 130 | if err := repo.FetchFromGithubWithToken(ctx, w.c.Mirror.GithubToken); err != nil { |
| 131 | slog.Error("mirror: fetch failed (github)", "repo", name, "err", err) |
| 132 | return err |
| 133 | } |
| 134 | } else { |
| 135 | if err := repo.Fetch(ctx); err != nil { |
| 136 | slog.Error("mirror: fetch failed", "repo", name, "err", err) |
| 137 | return err |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | if err := repo.SetLastSync(time.Now()); err != nil { |
| 142 | slog.Error("mirror: failed to set last sync time", "repo", name, "err", err) |
| 143 | } |
| 144 | |
| 145 | slog.Info("mirror: sync completed", "repo", repo.Name()) |
| 146 | return nil |
| 147 | } |
| 148 | |
| 149 | func (w *Worker) findMirrorRepos() ([]*git.Repo, error) { |
| 150 | dirs, err := os.ReadDir(w.c.Repo.Dir) |
| 151 | if err != nil { |
| 152 | return nil, err |
| 153 | } |
| 154 | |
| 155 | var repos []*git.Repo |
| 156 | for _, dir := range dirs { |
| 157 | if !dir.IsDir() { |
| 158 | continue |
| 159 | } |
| 160 | |
| 161 | name := dir.Name() |
| 162 | path := filepath.Join(w.c.Repo.Dir, filepath.Clean(name)) |
| 163 | repo, err := git.Open(path, "") |
| 164 | if err != nil { |
| 165 | slog.Debug("skipping non-git directory", "name", name, "err", err) |
| 166 | continue |
| 167 | } |
| 168 | |
| 169 | isMirror, err := repo.IsMirror() |
| 170 | if err != nil { |
| 171 | slog.Debug("skipping non-mirror repo", "name", name, "err", err) |
| 172 | continue |
| 173 | } |
| 174 | |
| 175 | if isMirror { |
| 176 | repos = append(repos, repo) |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | return repos, nil |
| 181 | } |