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Re: [PATCH v6 03/12] fsck: support refs pointing to promisor objects

From
BWBrandon Williams <bmwill@google.com>
Date
Dec 7, 2017, 19:18 UTC
Message-ID
<20171207191852.GC152943@google.com>
In-Reply-To
<20171205165854.64979-4-git@jeffhostetler.com>
On 12/05, Jeff Hostetler wrote:
Show 58 quoted lines
> From: Jonathan Tan <jonathantanmy@google.com>
> 
> Teach fsck to not treat refs referring to missing promisor objects as an
> error when extensions.partialclone is set.
> 
> For the purposes of warning about no default refs, such refs are still
> treated as legitimate refs.
> 
> Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
> ---
>  builtin/fsck.c           |  8 ++++++++
>  t/t0410-partial-clone.sh | 24 ++++++++++++++++++++++++
>  2 files changed, 32 insertions(+)
> 
> diff --git a/builtin/fsck.c b/builtin/fsck.c
> index 2934299..ee937bb 100644
> --- a/builtin/fsck.c
> +++ b/builtin/fsck.c
> @@ -434,6 +434,14 @@ static int fsck_handle_ref(const char *refname, const struct object_id *oid,
>  
>  	obj = parse_object(oid);
>  	if (!obj) {
> +		if (is_promisor_object(oid)) {
> +			/*
> +			 * Increment default_refs anyway, because this is a
> +			 * valid ref.
> +			 */
> +			 default_refs++;
> +			 return 0;
> +		}
>  		error("%s: invalid sha1 pointer %s", refname, oid_to_hex(oid));
>  		errors_found |= ERROR_REACHABLE;
>  		/* We'll continue with the rest despite the error.. */
> diff --git a/t/t0410-partial-clone.sh b/t/t0410-partial-clone.sh
> index 3ddb3b9..bf75162 100755
> --- a/t/t0410-partial-clone.sh
> +++ b/t/t0410-partial-clone.sh
> @@ -13,6 +13,14 @@ pack_as_from_promisor () {
>  	>repo/.git/objects/pack/pack-$HASH.promisor
>  }
>  
> +promise_and_delete () {
> +	HASH=$(git -C repo rev-parse "$1") &&
> +	git -C repo tag -a -m message my_annotated_tag "$HASH" &&
> +	git -C repo rev-parse my_annotated_tag | pack_as_from_promisor &&
> +	git -C repo tag -d my_annotated_tag &&
> +	delete_object repo "$HASH"
> +}
> +
>  test_expect_success 'missing reflog object, but promised by a commit, passes fsck' '
>  	test_create_repo repo &&
>  	test_commit -C repo my_commit &&
> @@ -78,4 +86,20 @@ test_expect_success 'missing reflog object alone fails fsck, even with extension
>  	test_must_fail git -C repo fsck
>  '
>  
> +test_expect_success 'missing ref object, but promised, passes fsck' '
> +	rm -rf repo &&

Instead of requiring that every test first removes 'repo', maybe you want to have each test do its own cleanup by adding in 'test_when_finished' lines to do the removals? Just a thought.

Show 18 quoted lines
> +	test_create_repo repo &&
> +	test_commit -C repo my_commit &&
> +
> +	A=$(git -C repo commit-tree -m a HEAD^{tree}) &&
> +
> +	# Reference $A only from ref
> +	git -C repo branch my_branch "$A" &&
> +	promise_and_delete "$A" &&
> +
> +	git -C repo config core.repositoryformatversion 1 &&
> +	git -C repo config extensions.partialclone "arbitrary string" &&
> +	git -C repo fsck
> +'
> +
>  test_done
> -- 
> 2.9.3
> 
-- 
Brandon Williams
Previous: Jeff HostetlerNext: Jonathan Tan
Message 7 of 21 in “Partial clone part 2: fsck and promisors”
  1. 00/12 Partial clone part 2: fsck and promisorsJeff Hostetler, Dec 5, 2017
  2. 01/12 extension.partialclone: introduce partial clone extensionJeff Hostetler, Dec 5, 2017
  3. 04/12 fsck: support referenced promisor objectsJeff Hostetler, Dec 5, 2017
  4. 02/12 fsck: introduce partialclone extensionJeff Hostetler, Dec 5, 2017
  5. 05/12 fsck: support promisor objects as CLI argumentJeff Hostetler, Dec 5, 2017
  6. 03/12 fsck: support refs pointing to promisor objectsJeff Hostetler, Dec 5, 2017
  7. Brandon WilliamsDec 7, 2017
  8. Jonathan TanDec 7, 2017
  9. Brandon WilliamsDec 7, 2017
  10. 12/12 gc: do not repack promisor packfilesJeff Hostetler, Dec 5, 2017
  11. 11/12 rev-list: support termination at promisor objectsJeff Hostetler, Dec 5, 2017
  12. 09/12 fixup: sha1_file: convert gotos to break/continueJeff Hostetler, Dec 5, 2017
  13. Junio C HamanoDec 5, 2017
  14. Jeff HostetlerDec 5, 2017
  15. Junio C HamanoDec 5, 2017
  16. Brandon WilliamsDec 7, 2017
  17. 08/12 sha1_file: support lazily fetching missing objectsJeff Hostetler, Dec 5, 2017
  18. 07/12 introduce fetch-object: fetch one promisor objectJeff Hostetler, Dec 5, 2017
  19. 06/12 index-pack: refactor writing of .keep filesJeff Hostetler, Dec 5, 2017
  20. 10/12 fixup: sha1_file: add TODOJeff Hostetler, Dec 5, 2017
  21. Jonathan TanDec 5, 2017

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