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https://github.com/git/git
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0c16cd499d
Teach gc to stop traversal at promisor objects, and to leave promisor packfiles alone. This has the effect of only repacking non-promisor packfiles, and preserves the distinction between promisor packfiles and non-promisor packfiles. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
343 lines
11 KiB
Bash
Executable file
343 lines
11 KiB
Bash
Executable file
#!/bin/sh
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test_description='partial clone'
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. ./test-lib.sh
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delete_object () {
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rm $1/.git/objects/$(echo $2 | sed -e 's|^..|&/|')
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}
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pack_as_from_promisor () {
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HASH=$(git -C repo pack-objects .git/objects/pack/pack) &&
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>repo/.git/objects/pack/pack-$HASH.promisor &&
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echo $HASH
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}
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promise_and_delete () {
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HASH=$(git -C repo rev-parse "$1") &&
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git -C repo tag -a -m message my_annotated_tag "$HASH" &&
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git -C repo rev-parse my_annotated_tag | pack_as_from_promisor &&
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# tag -d prints a message to stdout, so redirect it
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git -C repo tag -d my_annotated_tag >/dev/null &&
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delete_object repo "$HASH"
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}
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test_expect_success 'missing reflog object, but promised by a commit, passes fsck' '
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test_create_repo repo &&
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test_commit -C repo my_commit &&
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A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
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C=$(git -C repo commit-tree -m c -p $A HEAD^{tree}) &&
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# Reference $A only from reflog, and delete it
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git -C repo branch my_branch "$A" &&
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git -C repo branch -f my_branch my_commit &&
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delete_object repo "$A" &&
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# State that we got $C, which refers to $A, from promisor
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printf "$C\n" | pack_as_from_promisor &&
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# Normally, it fails
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test_must_fail git -C repo fsck &&
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# But with the extension, it succeeds
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git -C repo config core.repositoryformatversion 1 &&
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git -C repo config extensions.partialclone "arbitrary string" &&
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git -C repo fsck
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'
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test_expect_success 'missing reflog object, but promised by a tag, passes fsck' '
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rm -rf repo &&
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test_create_repo repo &&
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test_commit -C repo my_commit &&
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A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
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git -C repo tag -a -m d my_tag_name $A &&
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T=$(git -C repo rev-parse my_tag_name) &&
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git -C repo tag -d my_tag_name &&
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# Reference $A only from reflog, and delete it
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git -C repo branch my_branch "$A" &&
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git -C repo branch -f my_branch my_commit &&
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delete_object repo "$A" &&
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# State that we got $T, which refers to $A, from promisor
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printf "$T\n" | pack_as_from_promisor &&
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git -C repo config core.repositoryformatversion 1 &&
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git -C repo config extensions.partialclone "arbitrary string" &&
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git -C repo fsck
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'
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test_expect_success 'missing reflog object alone fails fsck, even with extension set' '
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rm -rf repo &&
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test_create_repo repo &&
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test_commit -C repo my_commit &&
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A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
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B=$(git -C repo commit-tree -m b HEAD^{tree}) &&
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# Reference $A only from reflog, and delete it
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git -C repo branch my_branch "$A" &&
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git -C repo branch -f my_branch my_commit &&
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delete_object repo "$A" &&
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git -C repo config core.repositoryformatversion 1 &&
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git -C repo config extensions.partialclone "arbitrary string" &&
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test_must_fail git -C repo fsck
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'
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test_expect_success 'missing ref object, but promised, passes fsck' '
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rm -rf repo &&
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test_create_repo repo &&
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test_commit -C repo my_commit &&
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A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
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# Reference $A only from ref
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git -C repo branch my_branch "$A" &&
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promise_and_delete "$A" &&
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git -C repo config core.repositoryformatversion 1 &&
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git -C repo config extensions.partialclone "arbitrary string" &&
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git -C repo fsck
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'
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test_expect_success 'missing object, but promised, passes fsck' '
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rm -rf repo &&
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test_create_repo repo &&
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test_commit -C repo 1 &&
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test_commit -C repo 2 &&
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test_commit -C repo 3 &&
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git -C repo tag -a annotated_tag -m "annotated tag" &&
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C=$(git -C repo rev-parse 1) &&
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T=$(git -C repo rev-parse 2^{tree}) &&
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B=$(git hash-object repo/3.t) &&
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AT=$(git -C repo rev-parse annotated_tag) &&
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promise_and_delete "$C" &&
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promise_and_delete "$T" &&
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promise_and_delete "$B" &&
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promise_and_delete "$AT" &&
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git -C repo config core.repositoryformatversion 1 &&
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git -C repo config extensions.partialclone "arbitrary string" &&
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git -C repo fsck
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'
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test_expect_success 'missing CLI object, but promised, passes fsck' '
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rm -rf repo &&
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test_create_repo repo &&
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test_commit -C repo my_commit &&
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A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
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promise_and_delete "$A" &&
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git -C repo config core.repositoryformatversion 1 &&
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git -C repo config extensions.partialclone "arbitrary string" &&
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git -C repo fsck "$A"
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'
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test_expect_success 'fetching of missing objects' '
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rm -rf repo &&
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test_create_repo server &&
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test_commit -C server foo &&
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git -C server repack -a -d --write-bitmap-index &&
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git clone "file://$(pwd)/server" repo &&
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HASH=$(git -C repo rev-parse foo) &&
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rm -rf repo/.git/objects/* &&
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git -C repo config core.repositoryformatversion 1 &&
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git -C repo config extensions.partialclone "origin" &&
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git -C repo cat-file -p "$HASH" &&
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# Ensure that the .promisor file is written, and check that its
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# associated packfile contains the object
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ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
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test_line_count = 1 promisorlist &&
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IDX=$(cat promisorlist | sed "s/promisor$/idx/") &&
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git verify-pack --verbose "$IDX" | grep "$HASH"
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'
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test_expect_success 'rev-list stops traversal at missing and promised commit' '
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rm -rf repo &&
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test_create_repo repo &&
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test_commit -C repo foo &&
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test_commit -C repo bar &&
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FOO=$(git -C repo rev-parse foo) &&
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promise_and_delete "$FOO" &&
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git -C repo config core.repositoryformatversion 1 &&
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git -C repo config extensions.partialclone "arbitrary string" &&
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git -C repo rev-list --exclude-promisor-objects --objects bar >out &&
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grep $(git -C repo rev-parse bar) out &&
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! grep $FOO out
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'
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test_expect_success 'rev-list stops traversal at missing and promised tree' '
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rm -rf repo &&
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test_create_repo repo &&
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test_commit -C repo foo &&
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mkdir repo/a_dir &&
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echo something >repo/a_dir/something &&
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git -C repo add a_dir/something &&
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git -C repo commit -m bar &&
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# foo^{tree} (tree referenced from commit)
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TREE=$(git -C repo rev-parse foo^{tree}) &&
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# a tree referenced by HEAD^{tree} (tree referenced from tree)
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TREE2=$(git -C repo ls-tree HEAD^{tree} | grep " tree " | head -1 | cut -b13-52) &&
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promise_and_delete "$TREE" &&
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promise_and_delete "$TREE2" &&
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git -C repo config core.repositoryformatversion 1 &&
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git -C repo config extensions.partialclone "arbitrary string" &&
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git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
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grep $(git -C repo rev-parse foo) out &&
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! grep $TREE out &&
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grep $(git -C repo rev-parse HEAD) out &&
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! grep $TREE2 out
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'
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test_expect_success 'rev-list stops traversal at missing and promised blob' '
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rm -rf repo &&
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test_create_repo repo &&
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echo something >repo/something &&
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git -C repo add something &&
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git -C repo commit -m foo &&
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BLOB=$(git -C repo hash-object -w something) &&
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promise_and_delete "$BLOB" &&
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git -C repo config core.repositoryformatversion 1 &&
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git -C repo config extensions.partialclone "arbitrary string" &&
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git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
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grep $(git -C repo rev-parse HEAD) out &&
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! grep $BLOB out
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'
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test_expect_success 'rev-list stops traversal at promisor commit, tree, and blob' '
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rm -rf repo &&
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test_create_repo repo &&
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test_commit -C repo foo &&
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test_commit -C repo bar &&
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test_commit -C repo baz &&
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COMMIT=$(git -C repo rev-parse foo) &&
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TREE=$(git -C repo rev-parse bar^{tree}) &&
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BLOB=$(git hash-object repo/baz.t) &&
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printf "%s\n%s\n%s\n" $COMMIT $TREE $BLOB | pack_as_from_promisor &&
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git -C repo config core.repositoryformatversion 1 &&
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git -C repo config extensions.partialclone "arbitrary string" &&
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git -C repo rev-list --exclude-promisor-objects --objects HEAD >out &&
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! grep $COMMIT out &&
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! grep $TREE out &&
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! grep $BLOB out &&
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grep $(git -C repo rev-parse bar) out # sanity check that some walking was done
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'
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test_expect_success 'rev-list accepts missing and promised objects on command line' '
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rm -rf repo &&
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test_create_repo repo &&
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test_commit -C repo foo &&
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test_commit -C repo bar &&
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test_commit -C repo baz &&
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COMMIT=$(git -C repo rev-parse foo) &&
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TREE=$(git -C repo rev-parse bar^{tree}) &&
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BLOB=$(git hash-object repo/baz.t) &&
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promise_and_delete $COMMIT &&
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promise_and_delete $TREE &&
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promise_and_delete $BLOB &&
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git -C repo config core.repositoryformatversion 1 &&
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git -C repo config extensions.partialclone "arbitrary string" &&
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git -C repo rev-list --exclude-promisor-objects --objects "$COMMIT" "$TREE" "$BLOB"
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'
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test_expect_success 'gc does not repack promisor objects' '
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rm -rf repo &&
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test_create_repo repo &&
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test_commit -C repo my_commit &&
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TREE_HASH=$(git -C repo rev-parse HEAD^{tree}) &&
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HASH=$(printf "$TREE_HASH\n" | pack_as_from_promisor) &&
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git -C repo config core.repositoryformatversion 1 &&
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git -C repo config extensions.partialclone "arbitrary string" &&
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git -C repo gc &&
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# Ensure that the promisor packfile still exists, and remove it
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test -e repo/.git/objects/pack/pack-$HASH.pack &&
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rm repo/.git/objects/pack/pack-$HASH.* &&
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# Ensure that the single other pack contains the commit, but not the tree
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ls repo/.git/objects/pack/pack-*.pack >packlist &&
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test_line_count = 1 packlist &&
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git verify-pack repo/.git/objects/pack/pack-*.pack -v >out &&
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grep "$(git -C repo rev-parse HEAD)" out &&
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! grep "$TREE_HASH" out
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'
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test_expect_success 'gc stops traversal when a missing but promised object is reached' '
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rm -rf repo &&
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test_create_repo repo &&
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test_commit -C repo my_commit &&
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TREE_HASH=$(git -C repo rev-parse HEAD^{tree}) &&
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HASH=$(promise_and_delete $TREE_HASH) &&
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git -C repo config core.repositoryformatversion 1 &&
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git -C repo config extensions.partialclone "arbitrary string" &&
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git -C repo gc &&
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# Ensure that the promisor packfile still exists, and remove it
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test -e repo/.git/objects/pack/pack-$HASH.pack &&
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rm repo/.git/objects/pack/pack-$HASH.* &&
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# Ensure that the single other pack contains the commit, but not the tree
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ls repo/.git/objects/pack/pack-*.pack >packlist &&
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test_line_count = 1 packlist &&
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git verify-pack repo/.git/objects/pack/pack-*.pack -v >out &&
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grep "$(git -C repo rev-parse HEAD)" out &&
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! grep "$TREE_HASH" out
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'
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LIB_HTTPD_PORT=12345 # default port, 410, cannot be used as non-root
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. "$TEST_DIRECTORY"/lib-httpd.sh
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start_httpd
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test_expect_success 'fetching of missing objects from an HTTP server' '
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rm -rf repo &&
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SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
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test_create_repo "$SERVER" &&
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test_commit -C "$SERVER" foo &&
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git -C "$SERVER" repack -a -d --write-bitmap-index &&
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git clone $HTTPD_URL/smart/server repo &&
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HASH=$(git -C repo rev-parse foo) &&
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rm -rf repo/.git/objects/* &&
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git -C repo config core.repositoryformatversion 1 &&
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git -C repo config extensions.partialclone "origin" &&
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git -C repo cat-file -p "$HASH" &&
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# Ensure that the .promisor file is written, and check that its
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# associated packfile contains the object
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ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
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test_line_count = 1 promisorlist &&
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IDX=$(cat promisorlist | sed "s/promisor$/idx/") &&
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git verify-pack --verbose "$IDX" | grep "$HASH"
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'
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stop_httpd
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test_done
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