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 "$HASH"
 171 '
 172
 173 test_expect_success 'rev-list stops traversal at missing and promised commit' '
 174         rm -rf repo &&
 175         test_create_repo repo &&
 176         test_commit -C repo foo &&
 177         test_commit -C repo bar &&
 178
 179         FOO=$(git -C repo rev-parse foo) &&
 180         promise_and_delete "$FOO" &&
 181
 182         git -C repo config core.repositoryformatversion 1 &&
 183         git -C repo config extensions.partialclone "arbitrary string" &&
 184         git -C repo rev-list --exclude-promisor-objects --objects bar >out &&
 185         grep $(git -C repo rev-parse bar) out &&
 186         ! grep $FOO out
 187 '
 188
 189 test_expect_success 'rev-list stops traversal at missing and promised tree' '
 190         rm -rf repo &&
 191         test_create_repo repo &&
 192         test_commit -C repo foo &&
 193         mkdir repo/a_dir &&
 194         echo something >repo/a_dir/something &&
 195         git -C repo add a_dir/something &&
 196         git -C repo commit -m bar &&
 197
 198         # foo^{tree} (tree referenced from commit)
 199         TREE=$(git -C repo rev-parse foo^{tree}) &&
 200
 201         # a tree referenced by HEAD^{tree} (tree referenced from tree)
 202         TREE2=$(git -C repo ls-tree HEAD^{tree} | grep " tree " | head -1 | cut -b13-52) &&
 203
 204         promise_and_delete "$TREE" &&
 205         promise_and_delete "$TREE2" &&
 206
 207         git -C repo config core.repositoryformatversion 1 &&
 208         git -C repo config extensions.partialclone "arbitrary string" &&
 209         git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
 210         grep $(git -C repo rev-parse foo) out &&
 211         ! grep $TREE out &&
 212         grep $(git -C repo rev-parse HEAD) out &&
 213         ! grep $TREE2 out
 214 '
 215
 216 test_expect_success 'rev-list stops traversal at missing and promised blob' '
 217         rm -rf repo &&
 218         test_create_repo repo &&
 219         echo something >repo/something &&
 220         git -C repo add something &&
 221         git -C repo commit -m foo &&
 222
 223         BLOB=$(git -C repo hash-object -w something) &&
 224         promise_and_delete "$BLOB" &&
 225
 226         git -C repo config core.repositoryformatversion 1 &&
 227         git -C repo config extensions.partialclone "arbitrary string" &&
 228         git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
 229         grep $(git -C repo rev-parse HEAD) out &&
 230         ! grep $BLOB out
 231 '
 232
 233 test_expect_success 'rev-list stops traversal at promisor commit, tree, and blob' '
 234         rm -rf repo &&
 235         test_create_repo repo &&
 236         test_commit -C repo foo &&
 237         test_commit -C repo bar &&
 238         test_commit -C repo baz &&
 239
 240         COMMIT=$(git -C repo rev-parse foo) &&
 241         TREE=$(git -C repo rev-parse bar^{tree}) &&
 242         BLOB=$(git hash-object repo/baz.t) &&
 243         printf "%s\n%s\n%s\n" $COMMIT $TREE $BLOB | pack_as_from_promisor &&
 244
 245         git -C repo config core.repositoryformatversion 1 &&
 246         git -C repo config extensions.partialclone "arbitrary string" &&
 247         git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
 248         ! grep $COMMIT out &&
 249         ! grep $TREE out &&
 250         ! grep $BLOB out &&
 251         grep $(git -C repo rev-parse bar) out  # sanity check that some walking was done
 252 '
 253
 254 test_expect_success 'rev-list accepts missing and promised objects on command line' '
 255         rm -rf repo &&
 256         test_create_repo repo &&
 257         test_commit -C repo foo &&
 258         test_commit -C repo bar &&
 259         test_commit -C repo baz &&
 260
 261         COMMIT=$(git -C repo rev-parse foo) &&
 262         TREE=$(git -C repo rev-parse bar^{tree}) &&
 263         BLOB=$(git hash-object repo/baz.t) &&
 264
 265         promise_and_delete $COMMIT &&
 266         promise_and_delete $TREE &&
 267         promise_and_delete $BLOB &&
 268
 269         git -C repo config core.repositoryformatversion 1 &&
 270         git -C repo config extensions.partialclone "arbitrary string" &&
 271         git -C repo rev-list --exclude-promisor-objects --objects "$COMMIT" "$TREE" "$BLOB"
 272 '
 273
 274 test_expect_success 'gc repacks promisor objects separately from non-promisor objects' '
 275         rm -rf repo &&
 276         test_create_repo repo &&
 277         test_commit -C repo one &&
 278         test_commit -C repo two &&
 279
 280         TREE_ONE=$(git -C repo rev-parse one^{tree}) &&
 281         printf "$TREE_ONE\n" | pack_as_from_promisor &&
 282         TREE_TWO=$(git -C repo rev-parse two^{tree}) &&
 283         printf "$TREE_TWO\n" | pack_as_from_promisor &&
 284
 285         git -C repo config core.repositoryformatversion 1 &&
 286         git -C repo config extensions.partialclone "arbitrary string" &&
 287         git -C repo gc &&
 288
 289         # Ensure that exactly one promisor packfile exists, and that it
 290         # contains the trees but not the commits
 291         ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
 292         test_line_count = 1 promisorlist &&
 293         PROMISOR_PACKFILE=$(sed "s/.promisor/.pack/" <promisorlist) &&
 294         git verify-pack $PROMISOR_PACKFILE -v >out &&
 295         grep "$TREE_ONE" out &&
 296         grep "$TREE_TWO" out &&
 297         ! grep "$(git -C repo rev-parse one)" out &&
 298         ! grep "$(git -C repo rev-parse two)" out &&
 299
 300         # Remove the promisor packfile and associated files
 301         rm $(sed "s/.promisor//" <promisorlist).* &&
 302
 303         # Ensure that the single other pack contains the commits, but not the
 304         # trees
 305         ls repo/.git/objects/pack/pack-*.pack >packlist &&
 306         test_line_count = 1 packlist &&
 307         git verify-pack repo/.git/objects/pack/pack-*.pack -v >out &&
 308         grep "$(git -C repo rev-parse one)" out &&
 309         grep "$(git -C repo rev-parse two)" out &&
 310         ! grep "$TREE_ONE" out &&
 311         ! grep "$TREE_TWO" out
 312 '
 313
 314 test_expect_success 'gc does not repack promisor objects if there are none' '
 315         rm -rf repo &&
 316         test_create_repo repo &&
 317         test_commit -C repo one &&
 318
 319         git -C repo config core.repositoryformatversion 1 &&
 320         git -C repo config extensions.partialclone "arbitrary string" &&
 321         git -C repo gc &&
 322
 323         # Ensure that only one pack exists
 324         ls repo/.git/objects/pack/pack-*.pack >packlist &&
 325         test_line_count = 1 packlist
 326 '
 327
 328 repack_and_check () {
 329         rm -rf repo2 &&
 330         cp -r repo repo2 &&
 331         git -C repo2 repack $1 -d &&
 332         git -C repo2 fsck &&
 333
 334         git -C repo2 cat-file -e $2 &&
 335         git -C repo2 cat-file -e $3
 336 }
 337
 338 test_expect_success 'repack -d does not irreversibly delete promisor objects' '
 339         rm -rf repo &&
 340         test_create_repo repo &&
 341         git -C repo config core.repositoryformatversion 1 &&
 342         git -C repo config extensions.partialclone "arbitrary string" &&
 343
 344         git -C repo commit --allow-empty -m one &&
 345         git -C repo commit --allow-empty -m two &&
 346         git -C repo commit --allow-empty -m three &&
 347         git -C repo commit --allow-empty -m four &&
 348         ONE=$(git -C repo rev-parse HEAD^^^) &&
 349         TWO=$(git -C repo rev-parse HEAD^^) &&
 350         THREE=$(git -C repo rev-parse HEAD^) &&
 351
 352         printf "$TWO\n" | pack_as_from_promisor &&
 353         printf "$THREE\n" | pack_as_from_promisor &&
 354         delete_object repo "$ONE" &&
 355
 356         repack_and_check -a "$TWO" "$THREE" &&
 357         repack_and_check -A "$TWO" "$THREE" &&
 358         repack_and_check -l "$TWO" "$THREE"
 359 '
 360
 361 test_expect_success 'gc stops traversal when a missing but promised object is reached' '
 362         rm -rf repo &&
 363         test_create_repo repo &&
 364         test_commit -C repo my_commit &&
 365
 366         TREE_HASH=$(git -C repo rev-parse HEAD^{tree}) &&
 367         HASH=$(promise_and_delete $TREE_HASH) &&
 368
 369         git -C repo config core.repositoryformatversion 1 &&
 370         git -C repo config extensions.partialclone "arbitrary string" &&
 371         git -C repo gc &&
 372
 373         # Ensure that the promisor packfile still exists, and remove it
 374         test -e repo/.git/objects/pack/pack-$HASH.pack &&
 375         rm repo/.git/objects/pack/pack-$HASH.* &&
 376
 377         # Ensure that the single other pack contains the commit, but not the tree
 378         ls repo/.git/objects/pack/pack-*.pack >packlist &&
 379         test_line_count = 1 packlist &&
 380         git verify-pack repo/.git/objects/pack/pack-*.pack -v >out &&
 381         grep "$(git -C repo rev-parse HEAD)" out &&
 382         ! grep "$TREE_HASH" out
 383 '
 384
 385 LIB_HTTPD_PORT=12345  # default port, 410, cannot be used as non-root
 386 . "$TEST_DIRECTORY"/lib-httpd.sh
 387 start_httpd
 388
 389 test_expect_success 'fetching of missing objects from an HTTP server' '
 390         rm -rf repo &&
 391         SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
 392         test_create_repo "$SERVER" &&
 393         test_commit -C "$SERVER" foo &&
 394         git -C "$SERVER" repack -a -d --write-bitmap-index &&
 395
 396         git clone $HTTPD_URL/smart/server repo &&
 397         HASH=$(git -C repo rev-parse foo) &&
 398         rm -rf repo/.git/objects/* &&
 399
 400         git -C repo config core.repositoryformatversion 1 &&
 401         git -C repo config extensions.partialclone "origin" &&
 402         git -C repo cat-file -p "$HASH" &&
 403
 404         # Ensure that the .promisor file is written, and check that its
 405         # associated packfile contains the object
 406         ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
 407         test_line_count = 1 promisorlist &&
 408         IDX=$(cat promisorlist | sed "s/promisor$/idx/") &&
 409         git verify-pack --verbose "$IDX" | grep "$HASH"
 410 '
 411
 412 stop_httpd
 413
 414 test_done