|
| 1 | +package main |
| 2 | + |
| 3 | +import ( |
| 4 | + "bytes" |
| 5 | + "context" |
| 6 | + "errors" |
| 7 | + "flag" |
| 8 | + "fmt" |
| 9 | + "io" |
| 10 | + "log/slog" |
| 11 | + "os" |
| 12 | + "os/signal" |
| 13 | + "sort" |
| 14 | + |
| 15 | + "github.com/google/go-github/v59/github" |
| 16 | + "github.com/loft-sh/changelog/log" |
| 17 | + pullrequests "github.com/loft-sh/changelog/pull-requests" |
| 18 | + "github.com/loft-sh/changelog/releases" |
| 19 | + "github.com/shurcooL/githubv4" |
| 20 | + "golang.org/x/oauth2" |
| 21 | +) |
| 22 | + |
| 23 | +var ErrMissingToken = errors.New("github token must be set") |
| 24 | + |
| 25 | +func main() { |
| 26 | + if err := run(context.Background(), os.Stdout, os.Stderr, os.Args); err != nil { |
| 27 | + fmt.Fprintf(os.Stderr, "%s\n", err) |
| 28 | + os.Exit(1) |
| 29 | + } |
| 30 | +} |
| 31 | + |
| 32 | +func run( |
| 33 | + ctx context.Context, |
| 34 | + stdout, stderr io.Writer, |
| 35 | + args []string, |
| 36 | +) error { |
| 37 | + flagset := flag.NewFlagSet(args[0], flag.ExitOnError) |
| 38 | + var ( |
| 39 | + owner = flagset.String("owner", "loft-sh", "The GitHub owner of the repository") |
| 40 | + repo = flagset.String("repo", "vcluster", "The GitHub repository to generate the changelog for") |
| 41 | + githubToken = flagset.String("token", "", "The GitHub token to use for authentication") |
| 42 | + previousTag = flagset.String("previous-tag", "", "The previous tag to generate the changelog for (if not set, the last stable release will be used)") |
| 43 | + releaseTag = flagset.String("release-tag", "", "The tag of the release to generate the changelog for") |
| 44 | + updateNotes = flagset.Bool("update-notes", true, "Update the release notes of the release with the generated ones") |
| 45 | + overwrite = flagset.Bool("overwrite", false, "Overwrite the release notes with the generated ones") |
| 46 | + debug = flagset.Bool("debug", false, "Enable debug logging") |
| 47 | + ) |
| 48 | + if err := flagset.Parse(args[1:]); err != nil { |
| 49 | + return fmt.Errorf("parse flags: %w", err) |
| 50 | + } |
| 51 | + |
| 52 | + if *githubToken == "" { |
| 53 | + *githubToken = os.Getenv("GITHUB_TOKEN") |
| 54 | + } |
| 55 | + |
| 56 | + if *githubToken == "" { |
| 57 | + return ErrMissingToken |
| 58 | + } |
| 59 | + |
| 60 | + leveler := slog.LevelVar{} |
| 61 | + leveler.Set(slog.LevelInfo) |
| 62 | + if *debug { |
| 63 | + leveler.Set(slog.LevelDebug) |
| 64 | + } |
| 65 | + |
| 66 | + logger := slog.New(slog.NewTextHandler(stderr, &slog.HandlerOptions{ |
| 67 | + Level: &leveler, |
| 68 | + })) |
| 69 | + |
| 70 | + ctx, stop := signal.NotifyContext(ctx, os.Interrupt, os.Kill) |
| 71 | + defer stop() |
| 72 | + |
| 73 | + ctx = context.WithValue(ctx, log.LoggerKey, logger) |
| 74 | + |
| 75 | + httpClient := oauth2.NewClient(ctx, oauth2.StaticTokenSource( |
| 76 | + &oauth2.Token{ |
| 77 | + AccessToken: *githubToken, |
| 78 | + }, |
| 79 | + )) |
| 80 | + |
| 81 | + client := github.NewClient(httpClient) |
| 82 | + gqlClient := githubv4.NewClient(httpClient) |
| 83 | + |
| 84 | + var stableTag string |
| 85 | + |
| 86 | + if *previousTag != "" { |
| 87 | + release, err := releases.FetchReleaseByTag(ctx, gqlClient, *owner, *repo, *previousTag) |
| 88 | + if err != nil { |
| 89 | + return fmt.Errorf("fetch release by tag: %w", err) |
| 90 | + } |
| 91 | + |
| 92 | + stableTag = release.TagName |
| 93 | + } else { |
| 94 | + if prevRelease, err := releases.LastStableReleaseBeforeTag(ctx, gqlClient, *owner, *repo, *releaseTag); err != nil { |
| 95 | + return fmt.Errorf("get last stable release before tag: %w", err) |
| 96 | + } else if prevRelease != "" { |
| 97 | + stableTag = prevRelease |
| 98 | + } else { |
| 99 | + stableTag, _, err = releases.LastStableRelease(ctx, gqlClient, *owner, *repo) |
| 100 | + if err != nil { |
| 101 | + return fmt.Errorf("get last stable release: %w", err) |
| 102 | + } |
| 103 | + } |
| 104 | + } |
| 105 | + |
| 106 | + if stableTag == "" { |
| 107 | + return errors.New("no stable release found") |
| 108 | + } |
| 109 | + |
| 110 | + logger.Info("Last stable release", "stableTag", stableTag) |
| 111 | + |
| 112 | + var currentRelease releases.Release |
| 113 | + if *releaseTag != "" { |
| 114 | + var err error |
| 115 | + currentRelease, err = releases.FetchReleaseByTag(ctx, gqlClient, *owner, *repo, *releaseTag) |
| 116 | + if err != nil { |
| 117 | + return fmt.Errorf("fetch release by tag: %w", err) |
| 118 | + } |
| 119 | + |
| 120 | + if currentRelease.TagName != *releaseTag { |
| 121 | + return fmt.Errorf("release not found: %s", *releaseTag) |
| 122 | + } |
| 123 | + } |
| 124 | + |
| 125 | + pullRequests, err := pullrequests.FetchAllPRsBetween(ctx, gqlClient, *owner, *repo, stableTag, *releaseTag) |
| 126 | + if err != nil { |
| 127 | + return fmt.Errorf("fetch all PRs until: %w", err) |
| 128 | + } |
| 129 | + |
| 130 | + logger.Info("Found merged pull requests between releases", "count", len(pullRequests), "previous", stableTag, "current", *releaseTag) |
| 131 | + |
| 132 | + notes := []Note{} |
| 133 | + for _, pr := range pullRequests { |
| 134 | + notes = append(notes, NewNotesFromPullRequest(pr)...) |
| 135 | + } |
| 136 | + sort.Slice(notes, SortNotes(notes)) |
| 137 | + |
| 138 | + buffer := bytes.Buffer{} |
| 139 | + |
| 140 | + for _, note := range notes { |
| 141 | + if _, err := buffer.Write([]byte(note.String())); err != nil { |
| 142 | + return fmt.Errorf("write note: %w", err) |
| 143 | + } |
| 144 | + } |
| 145 | + |
| 146 | + if *releaseTag != "" && *updateNotes { |
| 147 | + if currentRelease.Description == "" || *overwrite { |
| 148 | + if err := releases.UpdateReleaseNotes(ctx, client, *owner, *repo, currentRelease.DatabaseId, buffer.String()); err != nil { |
| 149 | + return fmt.Errorf("update release notes: %w", err) |
| 150 | + } |
| 151 | + logger.Info("Updated release notes", "releaseTag", *releaseTag) |
| 152 | + } else { |
| 153 | + logger.Warn("Release notes already exist for tag, skipping update", "releaseTag", *releaseTag) |
| 154 | + } |
| 155 | + } |
| 156 | + |
| 157 | + if _, err := stdout.Write(buffer.Bytes()); err != nil { |
| 158 | + return fmt.Errorf("write changelog: %w", err) |
| 159 | + } |
| 160 | + |
| 161 | + return nil |
| 162 | +} |
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