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 "$HASH"
  24 }
  25
  26 test_expect_success 'extensions.partialclone without filter' '
  27         test_create_repo server &&
  28         git clone --filter="blob:none" "file://$(pwd)/server" client &&
  29         git -C client config --unset core.partialclonefilter &&
  30         git -C client fetch origin
  31 '
  32
  33 test_expect_success 'missing reflog object, but promised by a commit, passes fsck' '
  34         rm -rf repo &&
  35         test_create_repo repo &&
  36         test_commit -C repo my_commit &&
  37
  38         A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
  39         C=$(git -C repo commit-tree -m c -p $A HEAD^{tree}) &&
  40
  41         # Reference $A only from reflog, and delete it
  42         git -C repo branch my_branch "$A" &&
  43         git -C repo branch -f my_branch my_commit &&
  44         delete_object repo "$A" &&
  45
  46         # State that we got $C, which refers to $A, from promisor
  47         printf "$C\n" | pack_as_from_promisor &&
  48
  49         # Normally, it fails
  50         test_must_fail git -C repo fsck &&
  51
  52         # But with the extension, it succeeds
  53         git -C repo config core.repositoryformatversion 1 &&
  54         git -C repo config extensions.partialclone "arbitrary string" &&
  55         git -C repo fsck
  56 '
  57
  58 test_expect_success 'missing reflog object, but promised by a tag, passes fsck' '
  59         rm -rf repo &&
  60         test_create_repo repo &&
  61         test_commit -C repo my_commit &&
  62
  63         A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
  64         git -C repo tag -a -m d my_tag_name $A &&
  65         T=$(git -C repo rev-parse my_tag_name) &&
  66         git -C repo tag -d my_tag_name &&
  67
  68         # Reference $A only from reflog, and delete it
  69         git -C repo branch my_branch "$A" &&
  70         git -C repo branch -f my_branch my_commit &&
  71         delete_object repo "$A" &&
  72
  73         # State that we got $T, which refers to $A, from promisor
  74         printf "$T\n" | pack_as_from_promisor &&
  75
  76         git -C repo config core.repositoryformatversion 1 &&
  77         git -C repo config extensions.partialclone "arbitrary string" &&
  78         git -C repo fsck
  79 '
  80
  81 test_expect_success 'missing reflog object alone fails fsck, even with extension set' '
  82         rm -rf repo &&
  83         test_create_repo repo &&
  84         test_commit -C repo my_commit &&
  85
  86         A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
  87         B=$(git -C repo commit-tree -m b HEAD^{tree}) &&
  88
  89         # Reference $A only from reflog, and delete it
  90         git -C repo branch my_branch "$A" &&
  91         git -C repo branch -f my_branch my_commit &&
  92         delete_object repo "$A" &&
  93
  94         git -C repo config core.repositoryformatversion 1 &&
  95         git -C repo config extensions.partialclone "arbitrary string" &&
  96         test_must_fail git -C repo fsck
  97 '
  98
  99 test_expect_success 'missing ref object, but promised, passes fsck' '
 100         rm -rf repo &&
 101         test_create_repo repo &&
 102         test_commit -C repo my_commit &&
 103
 104         A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
 105
 106         # Reference $A only from ref
 107         git -C repo branch my_branch "$A" &&
 108         promise_and_delete "$A" &&
 109
 110         git -C repo config core.repositoryformatversion 1 &&
 111         git -C repo config extensions.partialclone "arbitrary string" &&
 112         git -C repo fsck
 113 '
 114
 115 test_expect_success 'missing object, but promised, passes fsck' '
 116         rm -rf repo &&
 117         test_create_repo repo &&
 118         test_commit -C repo 1 &&
 119         test_commit -C repo 2 &&
 120         test_commit -C repo 3 &&
 121         git -C repo tag -a annotated_tag -m "annotated tag" &&
 122
 123         C=$(git -C repo rev-parse 1) &&
 124         T=$(git -C repo rev-parse 2^{tree}) &&
 125         B=$(git hash-object repo/3.t) &&
 126         AT=$(git -C repo rev-parse annotated_tag) &&
 127
 128         promise_and_delete "$C" &&
 129         promise_and_delete "$T" &&
 130         promise_and_delete "$B" &&
 131         promise_and_delete "$AT" &&
 132
 133         git -C repo config core.repositoryformatversion 1 &&
 134         git -C repo config extensions.partialclone "arbitrary string" &&
 135         git -C repo fsck
 136 '
 137
 138 test_expect_success 'missing CLI object, but promised, passes fsck' '
 139         rm -rf repo &&
 140         test_create_repo repo &&
 141         test_commit -C repo my_commit &&
 142
 143         A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
 144         promise_and_delete "$A" &&
 145
 146         git -C repo config core.repositoryformatversion 1 &&
 147         git -C repo config extensions.partialclone "arbitrary string" &&
 148         git -C repo fsck "$A"
 149 '
 150
 151 test_expect_success 'fetching of missing objects' '
 152         rm -rf repo &&
 153         test_create_repo server &&
 154         test_commit -C server foo &&
 155         git -C server repack -a -d --write-bitmap-index &&
 156
 157         git clone "file://$(pwd)/server" repo &&
 158         HASH=$(git -C repo rev-parse foo) &&
 159         rm -rf repo/.git/objects/* &&
 160
 161         git -C repo config core.repositoryformatversion 1 &&
 162         git -C repo config extensions.partialclone "origin" &&
 163         git -C repo cat-file -p "$HASH" &&
 164
 165         # Ensure that the .promisor file is written, and check that its
 166         # associated packfile contains the object
 167         ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
 168         test_line_count = 1 promisorlist &&
 169         IDX=$(cat promisorlist | sed "s/promisor$/idx/") &&
 170         git verify-pack --verbose "$IDX" | grep "$HASH"
 171 '
 172
 173 test_expect_success 'fetching of missing objects works with ref-in-want enabled' '
 174         # ref-in-want requires protocol version 2
 175         git -C server config protocol.version 2 &&
 176         git -C server config uploadpack.allowrefinwant 1 &&
 177         git -C repo config protocol.version 2 &&
 178
 179         rm -rf repo/.git/objects/* &&
 180         rm -f trace &&
 181         GIT_TRACE_PACKET="$(pwd)/trace" git -C repo cat-file -p "$HASH" &&
 182         grep "git< fetch=.*ref-in-want" trace
 183 '
 184
 185 test_expect_success 'rev-list stops traversal at missing and promised commit' '
 186         rm -rf repo &&
 187         test_create_repo repo &&
 188         test_commit -C repo foo &&
 189         test_commit -C repo bar &&
 190
 191         FOO=$(git -C repo rev-parse foo) &&
 192         promise_and_delete "$FOO" &&
 193
 194         git -C repo config core.repositoryformatversion 1 &&
 195         git -C repo config extensions.partialclone "arbitrary string" &&
 196         git -C repo rev-list --exclude-promisor-objects --objects bar >out &&
 197         grep $(git -C repo rev-parse bar) out &&
 198         ! grep $FOO out
 199 '
 200
 201 test_expect_success 'rev-list stops traversal at missing and promised tree' '
 202         rm -rf repo &&
 203         test_create_repo repo &&
 204         test_commit -C repo foo &&
 205         mkdir repo/a_dir &&
 206         echo something >repo/a_dir/something &&
 207         git -C repo add a_dir/something &&
 208         git -C repo commit -m bar &&
 209
 210         # foo^{tree} (tree referenced from commit)
 211         TREE=$(git -C repo rev-parse foo^{tree}) &&
 212
 213         # a tree referenced by HEAD^{tree} (tree referenced from tree)
 214         TREE2=$(git -C repo ls-tree HEAD^{tree} | grep " tree " | head -1 | cut -b13-52) &&
 215
 216         promise_and_delete "$TREE" &&
 217         promise_and_delete "$TREE2" &&
 218
 219         git -C repo config core.repositoryformatversion 1 &&
 220         git -C repo config extensions.partialclone "arbitrary string" &&
 221         git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
 222         grep $(git -C repo rev-parse foo) out &&
 223         ! grep $TREE out &&
 224         grep $(git -C repo rev-parse HEAD) out &&
 225         ! grep $TREE2 out
 226 '
 227
 228 test_expect_success 'rev-list stops traversal at missing and promised blob' '
 229         rm -rf repo &&
 230         test_create_repo repo &&
 231         echo something >repo/something &&
 232         git -C repo add something &&
 233         git -C repo commit -m foo &&
 234
 235         BLOB=$(git -C repo hash-object -w something) &&
 236         promise_and_delete "$BLOB" &&
 237
 238         git -C repo config core.repositoryformatversion 1 &&
 239         git -C repo config extensions.partialclone "arbitrary string" &&
 240         git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
 241         grep $(git -C repo rev-parse HEAD) out &&
 242         ! grep $BLOB out
 243 '
 244
 245 test_expect_success 'rev-list stops traversal at promisor commit, tree, and blob' '
 246         rm -rf repo &&
 247         test_create_repo repo &&
 248         test_commit -C repo foo &&
 249         test_commit -C repo bar &&
 250         test_commit -C repo baz &&
 251
 252         COMMIT=$(git -C repo rev-parse foo) &&
 253         TREE=$(git -C repo rev-parse bar^{tree}) &&
 254         BLOB=$(git hash-object repo/baz.t) &&
 255         printf "%s\n%s\n%s\n" $COMMIT $TREE $BLOB | pack_as_from_promisor &&
 256
 257         git -C repo config core.repositoryformatversion 1 &&
 258         git -C repo config extensions.partialclone "arbitrary string" &&
 259         git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
 260         ! grep $COMMIT out &&
 261         ! grep $TREE out &&
 262         ! grep $BLOB out &&
 263         grep $(git -C repo rev-parse bar) out  # sanity check that some walking was done
 264 '
 265
 266 test_expect_success 'rev-list accepts missing and promised objects on command line' '
 267         rm -rf repo &&
 268         test_create_repo repo &&
 269         test_commit -C repo foo &&
 270         test_commit -C repo bar &&
 271         test_commit -C repo baz &&
 272
 273         COMMIT=$(git -C repo rev-parse foo) &&
 274         TREE=$(git -C repo rev-parse bar^{tree}) &&
 275         BLOB=$(git hash-object repo/baz.t) &&
 276
 277         promise_and_delete $COMMIT &&
 278         promise_and_delete $TREE &&
 279         promise_and_delete $BLOB &&
 280
 281         git -C repo config core.repositoryformatversion 1 &&
 282         git -C repo config extensions.partialclone "arbitrary string" &&
 283         git -C repo rev-list --exclude-promisor-objects --objects "$COMMIT" "$TREE" "$BLOB"
 284 '
 285
 286 test_expect_success 'gc repacks promisor objects separately from non-promisor objects' '
 287         rm -rf repo &&
 288         test_create_repo repo &&
 289         test_commit -C repo one &&
 290         test_commit -C repo two &&
 291
 292         TREE_ONE=$(git -C repo rev-parse one^{tree}) &&
 293         printf "$TREE_ONE\n" | pack_as_from_promisor &&
 294         TREE_TWO=$(git -C repo rev-parse two^{tree}) &&
 295         printf "$TREE_TWO\n" | pack_as_from_promisor &&
 296
 297         git -C repo config core.repositoryformatversion 1 &&
 298         git -C repo config extensions.partialclone "arbitrary string" &&
 299         git -C repo gc &&
 300
 301         # Ensure that exactly one promisor packfile exists, and that it
 302         # contains the trees but not the commits
 303         ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
 304         test_line_count = 1 promisorlist &&
 305         PROMISOR_PACKFILE=$(sed "s/.promisor/.pack/" <promisorlist) &&
 306         git verify-pack $PROMISOR_PACKFILE -v >out &&
 307         grep "$TREE_ONE" out &&
 308         grep "$TREE_TWO" out &&
 309         ! grep "$(git -C repo rev-parse one)" out &&
 310         ! grep "$(git -C repo rev-parse two)" out &&
 311
 312         # Remove the promisor packfile and associated files
 313         rm $(sed "s/.promisor//" <promisorlist).* &&
 314
 315         # Ensure that the single other pack contains the commits, but not the
 316         # trees
 317         ls repo/.git/objects/pack/pack-*.pack >packlist &&
 318         test_line_count = 1 packlist &&
 319         git verify-pack repo/.git/objects/pack/pack-*.pack -v >out &&
 320         grep "$(git -C repo rev-parse one)" out &&
 321         grep "$(git -C repo rev-parse two)" out &&
 322         ! grep "$TREE_ONE" out &&
 323         ! grep "$TREE_TWO" out
 324 '
 325
 326 test_expect_success 'gc does not repack promisor objects if there are none' '
 327         rm -rf repo &&
 328         test_create_repo repo &&
 329         test_commit -C repo one &&
 330
 331         git -C repo config core.repositoryformatversion 1 &&
 332         git -C repo config extensions.partialclone "arbitrary string" &&
 333         git -C repo gc &&
 334
 335         # Ensure that only one pack exists
 336         ls repo/.git/objects/pack/pack-*.pack >packlist &&
 337         test_line_count = 1 packlist
 338 '
 339
 340 repack_and_check () {
 341         rm -rf repo2 &&
 342         cp -r repo repo2 &&
 343         git -C repo2 repack $1 -d &&
 344         git -C repo2 fsck &&
 345
 346         git -C repo2 cat-file -e $2 &&
 347         git -C repo2 cat-file -e $3
 348 }
 349
 350 test_expect_success 'repack -d does not irreversibly delete promisor objects' '
 351         rm -rf repo &&
 352         test_create_repo repo &&
 353         git -C repo config core.repositoryformatversion 1 &&
 354         git -C repo config extensions.partialclone "arbitrary string" &&
 355
 356         git -C repo commit --allow-empty -m one &&
 357         git -C repo commit --allow-empty -m two &&
 358         git -C repo commit --allow-empty -m three &&
 359         git -C repo commit --allow-empty -m four &&
 360         ONE=$(git -C repo rev-parse HEAD^^^) &&
 361         TWO=$(git -C repo rev-parse HEAD^^) &&
 362         THREE=$(git -C repo rev-parse HEAD^) &&
 363
 364         printf "$TWO\n" | pack_as_from_promisor &&
 365         printf "$THREE\n" | pack_as_from_promisor &&
 366         delete_object repo "$ONE" &&
 367
 368         repack_and_check -a "$TWO" "$THREE" &&
 369         repack_and_check -A "$TWO" "$THREE" &&
 370         repack_and_check -l "$TWO" "$THREE"
 371 '
 372
 373 test_expect_success 'gc stops traversal when a missing but promised object is reached' '
 374         rm -rf repo &&
 375         test_create_repo repo &&
 376         test_commit -C repo my_commit &&
 377
 378         TREE_HASH=$(git -C repo rev-parse HEAD^{tree}) &&
 379         HASH=$(promise_and_delete $TREE_HASH) &&
 380
 381         git -C repo config core.repositoryformatversion 1 &&
 382         git -C repo config extensions.partialclone "arbitrary string" &&
 383         git -C repo gc &&
 384
 385         # Ensure that the promisor packfile still exists, and remove it
 386         test -e repo/.git/objects/pack/pack-$HASH.pack &&
 387         rm repo/.git/objects/pack/pack-$HASH.* &&
 388
 389         # Ensure that the single other pack contains the commit, but not the tree
 390         ls repo/.git/objects/pack/pack-*.pack >packlist &&
 391         test_line_count = 1 packlist &&
 392         git verify-pack repo/.git/objects/pack/pack-*.pack -v >out &&
 393         grep "$(git -C repo rev-parse HEAD)" out &&
 394         ! grep "$TREE_HASH" out
 395 '
 396
 397 LIB_HTTPD_PORT=12345  # default port, 410, cannot be used as non-root
 398 . "$TEST_DIRECTORY"/lib-httpd.sh
 399 start_httpd
 400
 401 test_expect_success 'fetching of missing objects from an HTTP server' '
 402         rm -rf repo &&
 403         SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
 404         test_create_repo "$SERVER" &&
 405         test_commit -C "$SERVER" foo &&
 406         git -C "$SERVER" repack -a -d --write-bitmap-index &&
 407
 408         git clone $HTTPD_URL/smart/server repo &&
 409         HASH=$(git -C repo rev-parse foo) &&
 410         rm -rf repo/.git/objects/* &&
 411
 412         git -C repo config core.repositoryformatversion 1 &&
 413         git -C repo config extensions.partialclone "origin" &&
 414         git -C repo cat-file -p "$HASH" &&
 415
 416         # Ensure that the .promisor file is written, and check that its
 417         # associated packfile contains the object
 418         ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
 419         test_line_count = 1 promisorlist &&
 420         IDX=$(cat promisorlist | sed "s/promisor$/idx/") &&
 421         git verify-pack --verbose "$IDX" | grep "$HASH"
 422 '
 423
 424 stop_httpd
 425
 426 test_done