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internal/modules/repos.go
c0427d5fc7c0fcf8606c546071085e8af231fb81
· 3.3 KB · 123 lines
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| 1 | package modules |
| 2 | |
| 3 | import ( |
| 4 | "fmt" |
| 5 | "sort" |
| 6 | "sync" |
| 7 | "time" |
| 8 | |
| 9 | "gsg/internal/core" |
| 10 | ) |
| 11 | |
| 12 | type RepoSummary struct { |
| 13 | core.RepoInfo |
| 14 | LastCommit time.Time |
| 15 | } |
| 16 | |
| 17 | func init() { core.Register("repos", reposMod) } |
| 18 | |
| 19 | // reposCacheTTL bounds how stale the index page's "last updated" ordering |
| 20 | // and repo list can be. reposMod is site-scoped, so it never gets a |
| 21 | // resolved commit and therefore never touches the module cache (see |
| 22 | // Ctx.CacheKey) -- without this, every hit to "/" or the JSON index forks |
| 23 | // git twice per repo, unconditionally, no matter how often the page is |
| 24 | // requested. A few seconds of staleness here is the same trade-off the |
| 25 | // fsnotify debounce already makes for repo discovery, just applied to one |
| 26 | // more surface. |
| 27 | const reposCacheTTL = 5 * time.Second |
| 28 | |
| 29 | var reposCache struct { |
| 30 | mu sync.Mutex |
| 31 | at time.Time |
| 32 | val []RepoSummary |
| 33 | } |
| 34 | |
| 35 | // repos: every visible repository, newest activity first. |
| 36 | // Site-scoped -- does not touch c.Repo, so it is safe on the site Ctx. |
| 37 | func reposMod(c *core.Ctx, args ...string) (any, error) { |
| 38 | reposCache.mu.Lock() |
| 39 | if !reposCache.at.IsZero() && time.Since(reposCache.at) < reposCacheTTL { |
| 40 | out := reposCache.val |
| 41 | reposCache.mu.Unlock() |
| 42 | return out, nil |
| 43 | } |
| 44 | reposCache.mu.Unlock() |
| 45 | |
| 46 | list := c.Site.RepoList() |
| 47 | out := make([]RepoSummary, 0, len(list)) |
| 48 | for _, h := range list { |
| 49 | if h.Info.Hidden { |
| 50 | continue |
| 51 | } |
| 52 | s := RepoSummary{RepoInfo: h.Info} |
| 53 | if log, err := h.Repo.Log(h.Repo.HeadRef(), 1, 0, false); err == nil && len(log) > 0 { |
| 54 | s.LastCommit = log[0].When |
| 55 | } |
| 56 | out = append(out, s) |
| 57 | } |
| 58 | sort.Slice(out, func(i, j int) bool { return out[i].LastCommit.After(out[j].LastCommit) }) |
| 59 | |
| 60 | reposCache.mu.Lock() |
| 61 | reposCache.val, reposCache.at = out, time.Now() |
| 62 | reposCache.mu.Unlock() |
| 63 | return out, nil |
| 64 | } |
| 65 | |
| 66 | // Section is a named group of repositories, from `gsg.section` in each |
| 67 | // repo's config (or `gitweb.category`). |
| 68 | type Section struct { |
| 69 | Name string // "" means the repo set has no sections at all |
| 70 | Repos []RepoSummary |
| 71 | } |
| 72 | |
| 73 | func init() { core.Register("sections", sectionsMod) } |
| 74 | |
| 75 | // sections: repos grouped by gsg.section, sections alphabetical, unsectioned |
| 76 | // last. Built on top of `repos` rather than re-walking the repo set, so the |
| 77 | // index page pays for the log lookups exactly once. |
| 78 | // |
| 79 | // Returns a single unnamed Section when nothing sets gsg.section, which lets |
| 80 | // the template render a flat list without branching on the config. |
| 81 | func sectionsMod(c *core.Ctx, args ...string) (any, error) { |
| 82 | v, err := c.Mod("repos") |
| 83 | if err != nil { |
| 84 | return nil, err |
| 85 | } |
| 86 | list, ok := v.([]RepoSummary) |
| 87 | if !ok { |
| 88 | return nil, fmt.Errorf("sections: repos returned %T", v) |
| 89 | } |
| 90 | |
| 91 | any := false |
| 92 | groups := map[string][]RepoSummary{} |
| 93 | for _, r := range list { |
| 94 | if r.Section != "" { |
| 95 | any = true |
| 96 | } |
| 97 | groups[r.Section] = append(groups[r.Section], r) |
| 98 | } |
| 99 | if !any { |
| 100 | return []Section{{Name: "", Repos: list}}, nil |
| 101 | } |
| 102 | |
| 103 | names := make([]string, 0, len(groups)) |
| 104 | for n := range groups { |
| 105 | if n != "" { |
| 106 | names = append(names, n) |
| 107 | } |
| 108 | } |
| 109 | sort.Strings(names) |
| 110 | |
| 111 | out := make([]Section, 0, len(groups)) |
| 112 | for _, n := range names { |
| 113 | out = append(out, Section{Name: n, Repos: groups[n]}) |
| 114 | } |
| 115 | if rest, ok := groups[""]; ok { |
| 116 | out = append(out, Section{Name: unsectioned, Repos: rest}) |
| 117 | } |
| 118 | return out, nil |
| 119 | } |
| 120 | |
| 121 | // unsectioned labels the leftover group. Named rather than inlined so it is |
| 122 | // obvious this string is user-facing. |
| 123 | const unsectioned = "Other" |