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9e8cc155
Keenan Nemetz
12d ago
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1 | package hook |
| 2 | ||
| 3 | // Quotas are the bound a repository's own writers cannot raise. Each check is | |
| 4 | // exercised with the limit set around what the fixture holds, so the refusal is | |
| 5 | // about the quota and nothing else. | |
| 6 | ||
| 7 | import ( | |
| 8 | "bytes" | |
| 9 | "crypto/sha256" | |
| 10 | "encoding/hex" | |
| 11 | "strings" | |
| 12 | "testing" | |
| 13 | ||
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d37d301f
Keenan Nemetz
17h ago
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14 | "rodent.software/vole/core/git" |
| 15 | "rodent.software/vole/core/lfs" | |
| 16 | "rodent.software/vole/metadata" | |
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9e8cc155
Keenan Nemetz
12d ago
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17 | ) |
| 18 | ||
| 19 | // runRef runs pre-receive for one ref update with the old value a real push would | |
| 20 | // carry, which is what the ref quota counts against. | |
| 21 | func (f *fixture) runRef(cfg Config, old, next, ref string) (int, string) { | |
| 22 | f.t.Helper() | |
| 23 | cfg.RepoDir = f.m.Dir | |
| 24 | if cfg.UsersDB == "" { | |
| 25 | cfg.UsersDB = f.usersDB | |
| 26 | } | |
| 27 | var out bytes.Buffer | |
| 28 | cfg.In = strings.NewReader(old + " " + next + " " + ref + "\n") | |
| 29 | cfg.Out = &out | |
| 30 | return PreReceive(cfg), out.String() | |
| 31 | } | |
| 32 | ||
| 33 | func TestRefQuotaRefusesAPushThatWouldExceedIt(t *testing.T) { | |
| 34 | t.Parallel() | |
| 35 | f := newFixture(t, "hello\n") | |
| 36 | g := f.m.Git() | |
| 37 | if err := g.UpdateRef("refs/heads/main", f.head); err != nil { | |
| 38 | t.Fatal(err) | |
| 39 | } | |
| 40 | // The repository holds one branch, so a limit of one refuses a second. | |
| 41 | code, out := f.runRef(Config{Actor: "owner", MaxRefs: 1}, git.ZeroSHA, f.head, "refs/heads/topic") | |
| 42 | if code == 0 { | |
| 43 | t.Fatalf("a push over the ref quota was accepted:\n%s", out) | |
| 44 | } | |
| 45 | if !strings.Contains(out, "repo_max_refs") { | |
| 46 | t.Fatalf("the refusal does not name the quota:\n%s", out) | |
| 47 | } | |
| 48 | // Moving an existing branch is not a new ref. | |
| 49 | tree, err := g.MkTree([]git.Entry{}) | |
| 50 | if err != nil { | |
| 51 | t.Fatal(err) | |
| 52 | } | |
| 53 | next, err := g.CommitTree(tree, f.head, "second") | |
| 54 | if err != nil { | |
| 55 | t.Fatal(err) | |
| 56 | } | |
| 57 | if code, out := f.runRef(Config{Actor: "owner", MaxRefs: 1}, f.head, next, "refs/heads/main"); code != 0 { | |
| 58 | t.Fatalf("updating an existing branch was counted as a new ref:\n%s", out) | |
| 59 | } | |
| 60 | } | |
| 61 | ||
| 62 | // metadataTip builds a metadata commit holding n issue files of roughly size bytes. | |
| 63 | func (f *fixture) metadataTip(t *testing.T, n, size int) string { | |
| 64 | t.Helper() | |
| 65 | g := f.m.Git() | |
| 66 | empty, err := g.MkTree(nil) | |
| 67 | if err != nil { | |
| 68 | t.Fatal(err) | |
| 69 | } | |
| 70 | base, err := g.CommitTree(empty, "", "metadata") | |
| 71 | if err != nil { | |
| 72 | t.Fatal(err) | |
| 73 | } | |
| 74 | if err := g.UpdateRef(metadata.Ref, base); err != nil { | |
| 75 | t.Fatal(err) | |
| 76 | } | |
| 77 | defer f.m.Git().UpdateRef(metadata.Ref, base) | |
| 78 | body := "---\ntitle: t\n---\n" + strings.Repeat("x", size) + "\n" | |
| 79 | var entries []git.Entry | |
| 80 | for i := 0; i < n; i++ { | |
| 81 | blob, err := g.HashObject([]byte(body)) | |
| 82 | if err != nil { | |
| 83 | t.Fatal(err) | |
| 84 | } | |
| 85 | tree, err := g.MkTree([]git.Entry{{Mode: "100644", Type: "blob", SHA: blob, Name: "issue.md"}}) | |
| 86 | if err != nil { | |
| 87 | t.Fatal(err) | |
| 88 | } | |
| 89 | entries = append(entries, git.Entry{ | |
| 90 | Mode: "040000", Type: "tree", SHA: tree, | |
| 91 | Name: "01M5ISSUE000000000000000" + string(rune('A'+i)), | |
| 92 | }) | |
| 93 | } | |
| 94 | issues, err := g.MkTree([]git.Entry{{Mode: "040000", Type: "tree", SHA: mustTree(t, g, entries), Name: metadata.IssuesDir}}) | |
| 95 | if err != nil { | |
| 96 | t.Fatal(err) | |
| 97 | } | |
| 98 | tip, err := g.CommitTree(issues, base, "issues") | |
| 99 | if err != nil { | |
| 100 | t.Fatal(err) | |
| 101 | } | |
| 102 | return tip | |
| 103 | } | |
| 104 | ||
| 105 | func mustTree(t *testing.T, g *git.Repo, entries []git.Entry) string { | |
| 106 | t.Helper() | |
| 107 | sha, err := g.MkTree(entries) | |
| 108 | if err != nil { | |
| 109 | t.Fatal(err) | |
| 110 | } | |
| 111 | return sha | |
| 112 | } | |
| 113 | ||
| 114 | func TestMetadataQuotaCountsEntriesAndBytes(t *testing.T) { | |
| 115 | t.Parallel() | |
| 116 | f := newFixture(t, "hello\n") | |
| 117 | tip := f.metadataTip(t, 2, 100) | |
| 118 | ||
| 119 | // Two entries are over a limit of one, and the refusal names the quota. | |
| 120 | code, out := f.runRef(Config{Actor: "owner", MaxMetadataEntries: 1}, git.ZeroSHA, tip, metadata.Ref) | |
| 121 | if code == 0 || !strings.Contains(out, "repo_max_metadata_entries") { | |
| 122 | t.Fatalf("the metadata entry quota did not refuse (code %d):\n%s", code, out) | |
| 123 | } | |
| 124 | ||
| 125 | // The byte quota catches the same tree when the entry count is generous. | |
| 126 | code, out = f.runRef(Config{Actor: "owner", MaxMetadataBytes: 10}, git.ZeroSHA, tip, metadata.Ref) | |
| 127 | if !strings.Contains(out, "repo_max_metadata_bytes") { | |
| 128 | t.Fatalf("the metadata byte quota did not refuse (code %d):\n%s", code, out) | |
| 129 | } | |
| 130 | ||
| 131 | // A generous quota says nothing about metadata. | |
| 132 | if _, out := f.runRef(Config{Actor: "owner", MaxMetadataEntries: 100, MaxMetadataBytes: 1 << 20}, | |
| 133 | git.ZeroSHA, tip, metadata.Ref); strings.Contains(out, "repo_max_metadata") { | |
| 134 | t.Fatalf("a push inside the quota was refused by it:\n%s", out) | |
| 135 | } | |
| 136 | } | |
| 137 | ||
| 138 | func TestRepoSizeQuotaRefusesAFullRepository(t *testing.T) { | |
| 139 | t.Parallel() | |
| 140 | f := newFixture(t, strings.Repeat("hello\n", 1024)) | |
| 141 | if err := f.m.Git().UpdateRef("refs/heads/main", f.head); err != nil { | |
| 142 | t.Fatal(err) | |
| 143 | } | |
| 144 | code, out := f.runRef(Config{Actor: "owner", MaxRepoBytes: 1}, f.head, f.head, "refs/heads/main") | |
| 145 | if code == 0 { | |
| 146 | t.Fatalf("a repository over its size quota accepted a push:\n%s", out) | |
| 147 | } | |
| 148 | if !strings.Contains(out, "repo_max_bytes") { | |
| 149 | t.Fatalf("the refusal does not name the quota:\n%s", out) | |
| 150 | } | |
| 151 | } | |
| 152 | ||
| 153 | func TestLFSQuotaRefusesAFullStore(t *testing.T) { | |
| 154 | t.Parallel() | |
| 155 | f := newFixture(t, "hello\n") | |
| 156 | store := lfs.New(t.TempDir(), 0) | |
| 157 | body := []byte("an object") | |
| 158 | sum := sha256.Sum256(body) | |
| 159 | oid := hex.EncodeToString(sum[:]) | |
| 160 | if _, _, err := store.Put(f.m.ID, oid, int64(len(body)), strings.NewReader(string(body))); err != nil { | |
| 161 | t.Fatal(err) | |
| 162 | } | |
| 163 | code, out := f.runRef(Config{Actor: "owner", MaxLFSBytes: 1, LFS: store, RepoID: f.m.ID}, | |
| 164 | git.ZeroSHA, f.head, "refs/heads/main") | |
| 165 | if code == 0 { | |
| 166 | t.Fatalf("a repository over its object quota accepted a push:\n%s", out) | |
| 167 | } | |
| 168 | if !strings.Contains(out, "repo_max_lfs_bytes") { | |
| 169 | t.Fatalf("the refusal does not name the quota:\n%s", out) | |
| 170 | } | |
| 171 | } |