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 "$HASH" &&
 182         grep "git< fetch=.*ref-in-want" trace
 183 '
 184
 185 test_expect_success 'fetching of missing blobs works' '
 186         rm -rf server repo &&
 187         test_create_repo server &&
 188         test_commit -C server foo &&
 189         git -C server repack -a -d --write-bitmap-index &&
 190
 191         git clone "file://$(pwd)/server" repo &&
 192         git hash-object repo/foo.t >blobhash &&
 193         rm -rf repo/.git/objects/* &&
 194
 195         git -C server config uploadpack.allowanysha1inwant 1 &&
 196         git -C server config uploadpack.allowfilter 1 &&
 197         git -C repo config core.repositoryformatversion 1 &&
 198         git -C repo config extensions.partialclone "origin" &&
 199
 200         git -C repo cat-file -p $(cat blobhash)
 201 '
 202
 203 test_expect_success 'fetching of missing trees does not fetch blobs' '
 204         rm -rf server repo &&
 205         test_create_repo server &&
 206         test_commit -C server foo &&
 207         git -C server repack -a -d --write-bitmap-index &&
 208
 209         git clone "file://$(pwd)/server" repo &&
 210         git -C repo rev-parse foo^{tree} >treehash &&
 211         git hash-object repo/foo.t >blobhash &&
 212         rm -rf repo/.git/objects/* &&
 213
 214         git -C server config uploadpack.allowanysha1inwant 1 &&
 215         git -C server config uploadpack.allowfilter 1 &&
 216         git -C repo config core.repositoryformatversion 1 &&
 217         git -C repo config extensions.partialclone "origin" &&
 218         git -C repo cat-file -p $(cat treehash) &&
 219
 220         # Ensure that the tree, but not the blob, is fetched
 221         git -C repo rev-list --objects --missing=print $(cat treehash) >objects &&
 222         grep "^$(cat treehash)" objects &&
 223         grep "^[?]$(cat blobhash)" objects
 224 '
 225
 226 test_expect_success 'rev-list stops traversal at missing and promised commit' '
 227         rm -rf repo &&
 228         test_create_repo repo &&
 229         test_commit -C repo foo &&
 230         test_commit -C repo bar &&
 231
 232         FOO=$(git -C repo rev-parse foo) &&
 233         promise_and_delete "$FOO" &&
 234
 235         git -C repo config core.repositoryformatversion 1 &&
 236         git -C repo config extensions.partialclone "arbitrary string" &&
 237         GIT_TEST_COMMIT_GRAPH=0 git -C repo rev-list --exclude-promisor-objects --objects bar >out &&
 238         grep $(git -C repo rev-parse bar) out &&
 239         ! grep $FOO out
 240 '
 241
 242 test_expect_success 'rev-list stops traversal at missing and promised tree' '
 243         rm -rf repo &&
 244         test_create_repo repo &&
 245         test_commit -C repo foo &&
 246         mkdir repo/a_dir &&
 247         echo something >repo/a_dir/something &&
 248         git -C repo add a_dir/something &&
 249         git -C repo commit -m bar &&
 250
 251         # foo^{tree} (tree referenced from commit)
 252         TREE=$(git -C repo rev-parse foo^{tree}) &&
 253
 254         # a tree referenced by HEAD^{tree} (tree referenced from tree)
 255         TREE2=$(git -C repo ls-tree HEAD^{tree} | grep " tree " | head -1 | cut -b13-52) &&
 256
 257         promise_and_delete "$TREE" &&
 258         promise_and_delete "$TREE2" &&
 259
 260         git -C repo config core.repositoryformatversion 1 &&
 261         git -C repo config extensions.partialclone "arbitrary string" &&
 262         git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
 263         grep $(git -C repo rev-parse foo) out &&
 264         ! grep $TREE out &&
 265         grep $(git -C repo rev-parse HEAD) out &&
 266         ! grep $TREE2 out
 267 '
 268
 269 test_expect_success 'rev-list stops traversal at missing and promised blob' '
 270         rm -rf repo &&
 271         test_create_repo repo &&
 272         echo something >repo/something &&
 273         git -C repo add something &&
 274         git -C repo commit -m foo &&
 275
 276         BLOB=$(git -C repo hash-object -w something) &&
 277         promise_and_delete "$BLOB" &&
 278
 279         git -C repo config core.repositoryformatversion 1 &&
 280         git -C repo config extensions.partialclone "arbitrary string" &&
 281         git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
 282         grep $(git -C repo rev-parse HEAD) out &&
 283         ! grep $BLOB out
 284 '
 285
 286 test_expect_success 'rev-list stops traversal at promisor commit, tree, and blob' '
 287         rm -rf repo &&
 288         test_create_repo repo &&
 289         test_commit -C repo foo &&
 290         test_commit -C repo bar &&
 291         test_commit -C repo baz &&
 292
 293         COMMIT=$(git -C repo rev-parse foo) &&
 294         TREE=$(git -C repo rev-parse bar^{tree}) &&
 295         BLOB=$(git hash-object repo/baz.t) &&
 296         printf "%s\n%s\n%s\n" $COMMIT $TREE $BLOB | pack_as_from_promisor &&
 297
 298         git -C repo config core.repositoryformatversion 1 &&
 299         git -C repo config extensions.partialclone "arbitrary string" &&
 300         git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
 301         ! grep $COMMIT out &&
 302         ! grep $TREE out &&
 303         ! grep $BLOB out &&
 304         grep $(git -C repo rev-parse bar) out  # sanity check that some walking was done
 305 '
 306
 307 test_expect_success 'rev-list accepts missing and promised objects on command line' '
 308         rm -rf repo &&
 309         test_create_repo repo &&
 310         test_commit -C repo foo &&
 311         test_commit -C repo bar &&
 312         test_commit -C repo baz &&
 313
 314         COMMIT=$(git -C repo rev-parse foo) &&
 315         TREE=$(git -C repo rev-parse bar^{tree}) &&
 316         BLOB=$(git hash-object repo/baz.t) &&
 317
 318         promise_and_delete $COMMIT &&
 319         promise_and_delete $TREE &&
 320         promise_and_delete $BLOB &&
 321
 322         git -C repo config core.repositoryformatversion 1 &&
 323         git -C repo config extensions.partialclone "arbitrary string" &&
 324         git -C repo rev-list --exclude-promisor-objects --objects "$COMMIT" "$TREE" "$BLOB"
 325 '
 326
 327 test_expect_success 'gc repacks promisor objects separately from non-promisor objects' '
 328         rm -rf repo &&
 329         test_create_repo repo &&
 330         test_commit -C repo one &&
 331         test_commit -C repo two &&
 332
 333         TREE_ONE=$(git -C repo rev-parse one^{tree}) &&
 334         printf "$TREE_ONE\n" | pack_as_from_promisor &&
 335         TREE_TWO=$(git -C repo rev-parse two^{tree}) &&
 336         printf "$TREE_TWO\n" | pack_as_from_promisor &&
 337
 338         git -C repo config core.repositoryformatversion 1 &&
 339         git -C repo config extensions.partialclone "arbitrary string" &&
 340         git -C repo gc &&
 341
 342         # Ensure that exactly one promisor packfile exists, and that it
 343         # contains the trees but not the commits
 344         ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
 345         test_line_count = 1 promisorlist &&
 346         PROMISOR_PACKFILE=$(sed "s/.promisor/.pack/" <promisorlist) &&
 347         git verify-pack $PROMISOR_PACKFILE -v >out &&
 348         grep "$TREE_ONE" out &&
 349         grep "$TREE_TWO" out &&
 350         ! grep "$(git -C repo rev-parse one)" out &&
 351         ! grep "$(git -C repo rev-parse two)" out &&
 352
 353         # Remove the promisor packfile and associated files
 354         rm $(sed "s/.promisor//" <promisorlist).* &&
 355
 356         # Ensure that the single other pack contains the commits, but not the
 357         # trees
 358         ls repo/.git/objects/pack/pack-*.pack >packlist &&
 359         test_line_count = 1 packlist &&
 360         git verify-pack repo/.git/objects/pack/pack-*.pack -v >out &&
 361         grep "$(git -C repo rev-parse one)" out &&
 362         grep "$(git -C repo rev-parse two)" out &&
 363         ! grep "$TREE_ONE" out &&
 364         ! grep "$TREE_TWO" out
 365 '
 366
 367 test_expect_success 'gc does not repack promisor objects if there are none' '
 368         rm -rf repo &&
 369         test_create_repo repo &&
 370         test_commit -C repo one &&
 371
 372         git -C repo config core.repositoryformatversion 1 &&
 373         git -C repo config extensions.partialclone "arbitrary string" &&
 374         git -C repo gc &&
 375
 376         # Ensure that only one pack exists
 377         ls repo/.git/objects/pack/pack-*.pack >packlist &&
 378         test_line_count = 1 packlist
 379 '
 380
 381 repack_and_check () {
 382         rm -rf repo2 &&
 383         cp -r repo repo2 &&
 384         git -C repo2 repack $1 -d &&
 385         git -C repo2 fsck &&
 386
 387         git -C repo2 cat-file -e $2 &&
 388         git -C repo2 cat-file -e $3
 389 }
 390
 391 test_expect_success 'repack -d does not irreversibly delete promisor objects' '
 392         rm -rf repo &&
 393         test_create_repo repo &&
 394         git -C repo config core.repositoryformatversion 1 &&
 395         git -C repo config extensions.partialclone "arbitrary string" &&
 396
 397         git -C repo commit --allow-empty -m one &&
 398         git -C repo commit --allow-empty -m two &&
 399         git -C repo commit --allow-empty -m three &&
 400         git -C repo commit --allow-empty -m four &&
 401         ONE=$(git -C repo rev-parse HEAD^^^) &&
 402         TWO=$(git -C repo rev-parse HEAD^^) &&
 403         THREE=$(git -C repo rev-parse HEAD^) &&
 404
 405         printf "$TWO\n" | pack_as_from_promisor &&
 406         printf "$THREE\n" | pack_as_from_promisor &&
 407         delete_object repo "$ONE" &&
 408
 409         repack_and_check -a "$TWO" "$THREE" &&
 410         repack_and_check -A "$TWO" "$THREE" &&
 411         repack_and_check -l "$TWO" "$THREE"
 412 '
 413
 414 test_expect_success 'gc stops traversal when a missing but promised object is reached' '
 415         rm -rf repo &&
 416         test_create_repo repo &&
 417         test_commit -C repo my_commit &&
 418
 419         TREE_HASH=$(git -C repo rev-parse HEAD^{tree}) &&
 420         HASH=$(promise_and_delete $TREE_HASH) &&
 421
 422         git -C repo config core.repositoryformatversion 1 &&
 423         git -C repo config extensions.partialclone "arbitrary string" &&
 424         git -C repo gc &&
 425
 426         # Ensure that the promisor packfile still exists, and remove it
 427         test -e repo/.git/objects/pack/pack-$HASH.pack &&
 428         rm repo/.git/objects/pack/pack-$HASH.* &&
 429
 430         # Ensure that the single other pack contains the commit, but not the tree
 431         ls repo/.git/objects/pack/pack-*.pack >packlist &&
 432         test_line_count = 1 packlist &&
 433         git verify-pack repo/.git/objects/pack/pack-*.pack -v >out &&
 434         grep "$(git -C repo rev-parse HEAD)" out &&
 435         ! grep "$TREE_HASH" out
 436 '
 437
 438 LIB_HTTPD_PORT=12345  # default port, 410, cannot be used as non-root
 439 . "$TEST_DIRECTORY"/lib-httpd.sh
 440 start_httpd
 441
 442 test_expect_success 'fetching of missing objects from an HTTP server' '
 443         rm -rf repo &&
 444         SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
 445         test_create_repo "$SERVER" &&
 446         test_commit -C "$SERVER" foo &&
 447         git -C "$SERVER" repack -a -d --write-bitmap-index &&
 448
 449         git clone $HTTPD_URL/smart/server repo &&
 450         HASH=$(git -C repo rev-parse foo) &&
 451         rm -rf repo/.git/objects/* &&
 452
 453         git -C repo config core.repositoryformatversion 1 &&
 454         git -C repo config extensions.partialclone "origin" &&
 455         git -C repo cat-file -p "$HASH" &&
 456
 457         # Ensure that the .promisor file is written, and check that its
 458         # associated packfile contains the object
 459         ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
 460         test_line_count = 1 promisorlist &&
 461         IDX=$(cat promisorlist | sed "s/promisor$/idx/") &&
 462         git verify-pack --verbose "$IDX" | grep "$HASH"
 463 '
 464
 465 stop_httpd
 466
 467 test_done