t/t0410-partial-clone.sh

   1 #!/bin/sh
   2
   3 test_description='partial clone'
   4
   5 . ./test-lib.sh
   6
   7 delete_object () {
   8         rm $1/.git/objects/$(echo $2 | sed -e 's|^..|&/|')
   9 }
  10
  11 pack_as_from_promisor () {
  12         HASH=$(git -C repo pack-objects .git/objects/pack/pack) &&
  13         >repo/.git/objects/pack/pack-$HASH.promisor &&
  14         echo $HASH
  15 }
  16
  17 promise_and_delete () {
  18         HASH=$(git -C repo rev-parse "$1") &&
  19         git -C repo tag -a -m message my_annotated_tag "$HASH" &&
  20         git -C repo rev-parse my_annotated_tag | pack_as_from_promisor &&
  21         # tag -d prints a message to stdout, so redirect it
  22         git -C repo tag -d my_annotated_tag >/dev/null &&
  23         delete_object repo "$HASH"
  24 }
  25
  26 test_expect_success 'missing reflog object, but promised by a commit, passes fsck' '
  27         test_create_repo repo &&
  28         test_commit -C repo my_commit &&
  29
  30         A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
  31         C=$(git -C repo commit-tree -m c -p $A HEAD^{tree}) &&
  32
  33         # Reference $A only from reflog, and delete it
  34         git -C repo branch my_branch "$A" &&
  35         git -C repo branch -f my_branch my_commit &&
  36         delete_object repo "$A" &&
  37
  38         # State that we got $C, which refers to $A, from promisor
  39         printf "$C\n" | pack_as_from_promisor &&
  40
  41         # Normally, it fails
  42         test_must_fail git -C repo fsck &&
  43
  44         # But with the extension, it succeeds
  45         git -C repo config core.repositoryformatversion 1 &&
  46         git -C repo config extensions.partialclone "arbitrary string" &&
  47         git -C repo fsck
  48 '
  49
  50 test_expect_success 'missing reflog object, but promised by a tag, passes fsck' '
  51         rm -rf repo &&
  52         test_create_repo repo &&
  53         test_commit -C repo my_commit &&
  54
  55         A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
  56         git -C repo tag -a -m d my_tag_name $A &&
  57         T=$(git -C repo rev-parse my_tag_name) &&
  58         git -C repo tag -d my_tag_name &&
  59
  60         # Reference $A only from reflog, and delete it
  61         git -C repo branch my_branch "$A" &&
  62         git -C repo branch -f my_branch my_commit &&
  63         delete_object repo "$A" &&
  64
  65         # State that we got $T, which refers to $A, from promisor
  66         printf "$T\n" | pack_as_from_promisor &&
  67
  68         git -C repo config core.repositoryformatversion 1 &&
  69         git -C repo config extensions.partialclone "arbitrary string" &&
  70         git -C repo fsck
  71 '
  72
  73 test_expect_success 'missing reflog object alone fails fsck, even with extension set' '
  74         rm -rf repo &&
  75         test_create_repo repo &&
  76         test_commit -C repo my_commit &&
  77
  78         A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
  79         B=$(git -C repo commit-tree -m b HEAD^{tree}) &&
  80
  81         # Reference $A only from reflog, and delete it
  82         git -C repo branch my_branch "$A" &&
  83         git -C repo branch -f my_branch my_commit &&
  84         delete_object repo "$A" &&
  85
  86         git -C repo config core.repositoryformatversion 1 &&
  87         git -C repo config extensions.partialclone "arbitrary string" &&
  88         test_must_fail git -C repo fsck
  89 '
  90
  91 test_expect_success 'missing ref object, but promised, passes fsck' '
  92         rm -rf repo &&
  93         test_create_repo repo &&
  94         test_commit -C repo my_commit &&
  95
  96         A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
  97
  98         # Reference $A only from ref
  99         git -C repo branch my_branch "$A" &&
 100         promise_and_delete "$A" &&
 101
 102         git -C repo config core.repositoryformatversion 1 &&
 103         git -C repo config extensions.partialclone "arbitrary string" &&
 104         git -C repo fsck
 105 '
 106
 107 test_expect_success 'missing object, but promised, passes fsck' '
 108         rm -rf repo &&
 109         test_create_repo repo &&
 110         test_commit -C repo 1 &&
 111         test_commit -C repo 2 &&
 112         test_commit -C repo 3 &&
 113         git -C repo tag -a annotated_tag -m "annotated tag" &&
 114
 115         C=$(git -C repo rev-parse 1) &&
 116         T=$(git -C repo rev-parse 2^{tree}) &&
 117         B=$(git hash-object repo/3.t) &&
 118         AT=$(git -C repo rev-parse annotated_tag) &&
 119
 120         promise_and_delete "$C" &&
 121         promise_and_delete "$T" &&
 122         promise_and_delete "$B" &&
 123         promise_and_delete "$AT" &&
 124
 125         git -C repo config core.repositoryformatversion 1 &&
 126         git -C repo config extensions.partialclone "arbitrary string" &&
 127         git -C repo fsck
 128 '
 129
 130 test_expect_success 'missing CLI object, but promised, passes fsck' '
 131         rm -rf repo &&
 132         test_create_repo repo &&
 133         test_commit -C repo my_commit &&
 134
 135         A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
 136         promise_and_delete "$A" &&
 137
 138         git -C repo config core.repositoryformatversion 1 &&
 139         git -C repo config extensions.partialclone "arbitrary string" &&
 140         git -C repo fsck "$A"
 141 '
 142
 143 test_expect_success 'fetching of missing objects' '
 144         rm -rf repo &&
 145         test_create_repo server &&
 146         test_commit -C server foo &&
 147         git -C server repack -a -d --write-bitmap-index &&
 148
 149         git clone "file://$(pwd)/server" repo &&
 150         HASH=$(git -C repo rev-parse foo) &&
 151         rm -rf repo/.git/objects/* &&
 152
 153         git -C repo config core.repositoryformatversion 1 &&
 154         git -C repo config extensions.partialclone "origin" &&
 155         git -C repo cat-file -p "$HASH" &&
 156
 157         # Ensure that the .promisor file is written, and check that its
 158         # associated packfile contains the object
 159         ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
 160         test_line_count = 1 promisorlist &&
 161         IDX=$(cat promisorlist | sed "s/promisor$/idx/") &&
 162         git verify-pack --verbose "$IDX" | grep "$HASH"
 163 '
 164
 165 test_expect_success 'rev-list stops traversal at missing and promised commit' '
 166         rm -rf repo &&
 167         test_create_repo repo &&
 168         test_commit -C repo foo &&
 169         test_commit -C repo bar &&
 170
 171         FOO=$(git -C repo rev-parse foo) &&
 172         promise_and_delete "$FOO" &&
 173
 174         git -C repo config core.repositoryformatversion 1 &&
 175         git -C repo config extensions.partialclone "arbitrary string" &&
 176         git -C repo rev-list --exclude-promisor-objects --objects bar >out &&
 177         grep $(git -C repo rev-parse bar) out &&
 178         ! grep $FOO out
 179 '
 180
 181 test_expect_success 'rev-list stops traversal at missing and promised tree' '
 182         rm -rf repo &&
 183         test_create_repo repo &&
 184         test_commit -C repo foo &&
 185         mkdir repo/a_dir &&
 186         echo something >repo/a_dir/something &&
 187         git -C repo add a_dir/something &&
 188         git -C repo commit -m bar &&
 189
 190         # foo^{tree} (tree referenced from commit)
 191         TREE=$(git -C repo rev-parse foo^{tree}) &&
 192
 193         # a tree referenced by HEAD^{tree} (tree referenced from tree)
 194         TREE2=$(git -C repo ls-tree HEAD^{tree} | grep " tree " | head -1 | cut -b13-52) &&
 195
 196         promise_and_delete "$TREE" &&
 197         promise_and_delete "$TREE2" &&
 198
 199         git -C repo config core.repositoryformatversion 1 &&
 200         git -C repo config extensions.partialclone "arbitrary string" &&
 201         git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
 202         grep $(git -C repo rev-parse foo) out &&
 203         ! grep $TREE out &&
 204         grep $(git -C repo rev-parse HEAD) out &&
 205         ! grep $TREE2 out
 206 '
 207
 208 test_expect_success 'rev-list stops traversal at missing and promised blob' '
 209         rm -rf repo &&
 210         test_create_repo repo &&
 211         echo something >repo/something &&
 212         git -C repo add something &&
 213         git -C repo commit -m foo &&
 214
 215         BLOB=$(git -C repo hash-object -w something) &&
 216         promise_and_delete "$BLOB" &&
 217
 218         git -C repo config core.repositoryformatversion 1 &&
 219         git -C repo config extensions.partialclone "arbitrary string" &&
 220         git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
 221         grep $(git -C repo rev-parse HEAD) out &&
 222         ! grep $BLOB out
 223 '
 224
 225 test_expect_success 'rev-list stops traversal at promisor commit, tree, and blob' '
 226         rm -rf repo &&
 227         test_create_repo repo &&
 228         test_commit -C repo foo &&
 229         test_commit -C repo bar &&
 230         test_commit -C repo baz &&
 231
 232         COMMIT=$(git -C repo rev-parse foo) &&
 233         TREE=$(git -C repo rev-parse bar^{tree}) &&
 234         BLOB=$(git hash-object repo/baz.t) &&
 235         printf "%s\n%s\n%s\n" $COMMIT $TREE $BLOB | pack_as_from_promisor &&
 236
 237         git -C repo config core.repositoryformatversion 1 &&
 238         git -C repo config extensions.partialclone "arbitrary string" &&
 239         git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
 240         ! grep $COMMIT out &&
 241         ! grep $TREE out &&
 242         ! grep $BLOB out &&
 243         grep $(git -C repo rev-parse bar) out  # sanity check that some walking was done
 244 '
 245
 246 test_expect_success 'rev-list accepts missing and promised objects on command line' '
 247         rm -rf repo &&
 248         test_create_repo repo &&
 249         test_commit -C repo foo &&
 250         test_commit -C repo bar &&
 251         test_commit -C repo baz &&
 252
 253         COMMIT=$(git -C repo rev-parse foo) &&
 254         TREE=$(git -C repo rev-parse bar^{tree}) &&
 255         BLOB=$(git hash-object repo/baz.t) &&
 256
 257         promise_and_delete $COMMIT &&
 258         promise_and_delete $TREE &&
 259         promise_and_delete $BLOB &&
 260
 261         git -C repo config core.repositoryformatversion 1 &&
 262         git -C repo config extensions.partialclone "arbitrary string" &&
 263         git -C repo rev-list --exclude-promisor-objects --objects "$COMMIT" "$TREE" "$BLOB"
 264 '
 265
 266 test_expect_success 'gc does not repack promisor objects' '
 267         rm -rf repo &&
 268         test_create_repo repo &&
 269         test_commit -C repo my_commit &&
 270
 271         TREE_HASH=$(git -C repo rev-parse HEAD^{tree}) &&
 272         HASH=$(printf "$TREE_HASH\n" | pack_as_from_promisor) &&
 273
 274         git -C repo config core.repositoryformatversion 1 &&
 275         git -C repo config extensions.partialclone "arbitrary string" &&
 276         git -C repo gc &&
 277
 278         # Ensure that the promisor packfile still exists, and remove it
 279         test -e repo/.git/objects/pack/pack-$HASH.pack &&
 280         rm repo/.git/objects/pack/pack-$HASH.* &&
 281
 282         # Ensure that the single other pack contains the commit, but not the tree
 283         ls repo/.git/objects/pack/pack-*.pack >packlist &&
 284         test_line_count = 1 packlist &&
 285         git verify-pack repo/.git/objects/pack/pack-*.pack -v >out &&
 286         grep "$(git -C repo rev-parse HEAD)" out &&
 287         ! grep "$TREE_HASH" out
 288 '
 289
 290 test_expect_success 'gc stops traversal when a missing but promised object is reached' '
 291         rm -rf repo &&
 292         test_create_repo repo &&
 293         test_commit -C repo my_commit &&
 294
 295         TREE_HASH=$(git -C repo rev-parse HEAD^{tree}) &&
 296         HASH=$(promise_and_delete $TREE_HASH) &&
 297
 298         git -C repo config core.repositoryformatversion 1 &&
 299         git -C repo config extensions.partialclone "arbitrary string" &&
 300         git -C repo gc &&
 301
 302         # Ensure that the promisor packfile still exists, and remove it
 303         test -e repo/.git/objects/pack/pack-$HASH.pack &&
 304         rm repo/.git/objects/pack/pack-$HASH.* &&
 305
 306         # Ensure that the single other pack contains the commit, but not the tree
 307         ls repo/.git/objects/pack/pack-*.pack >packlist &&
 308         test_line_count = 1 packlist &&
 309         git verify-pack repo/.git/objects/pack/pack-*.pack -v >out &&
 310         grep "$(git -C repo rev-parse HEAD)" out &&
 311         ! grep "$TREE_HASH" out
 312 '
 313
 314 LIB_HTTPD_PORT=12345  # default port, 410, cannot be used as non-root
 315 . "$TEST_DIRECTORY"/lib-httpd.sh
 316 start_httpd
 317
 318 test_expect_success 'fetching of missing objects from an HTTP server' '
 319         rm -rf repo &&
 320         SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
 321         test_create_repo "$SERVER" &&
 322         test_commit -C "$SERVER" foo &&
 323         git -C "$SERVER" repack -a -d --write-bitmap-index &&
 324
 325         git clone $HTTPD_URL/smart/server repo &&
 326         HASH=$(git -C repo rev-parse foo) &&
 327         rm -rf repo/.git/objects/* &&
 328
 329         git -C repo config core.repositoryformatversion 1 &&
 330         git -C repo config extensions.partialclone "origin" &&
 331         git -C repo cat-file -p "$HASH" &&
 332
 333         # Ensure that the .promisor file is written, and check that its
 334         # associated packfile contains the object
 335         ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
 336         test_line_count = 1 promisorlist &&
 337         IDX=$(cat promisorlist | sed "s/promisor$/idx/") &&
 338         git verify-pack --verbose "$IDX" | grep "$HASH"
 339 '
 340
 341 stop_httpd
 342
 343 test_done