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From: Junio C Hamano <gitster@pobox.com>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: git@vger.kernel.org,
	Johannes Schindelin <Johannes.Schindelin@gmx.de>,
	Jeff King <peff@peff.net>,
	Eric Sunshine <sunshine@sunshineco.com>,
	Christian Couder <christian.couder@gmail.com>
Subject: Re: [PATCH v3 07/10] fetch: implement fetch.fsck.*
Date: Fri, 27 Jul 2018 14:08:37 -0700	[thread overview]
Message-ID: <xmqqva90l73e.fsf@gitster-ct.c.googlers.com> (raw)
In-Reply-To: <20180727143720.14948-8-avarab@gmail.com> ("Ævar Arnfjörð Bjarmason"'s message of "Fri, 27 Jul 2018 14:37:17 +0000")

Ævar Arnfjörð Bjarmason  <avarab@gmail.com> writes:

> -			argv_array_push(&cmd.args, "--strict");
> +			argv_array_pushf(&cmd.args, "--strict%s",
> +					 fsck_msg_types.buf);
> ...
> +		if (git_config_pathname(&path, var, value))
> +			return 1;
> +		strbuf_addf(&fsck_msg_types, "%cskiplist=%s",
> +			fsck_msg_types.len ? ',' : '=', path);
> ...
> +		if (is_valid_msg_type(var, value))
> +			strbuf_addf(&fsck_msg_types, "%c%s=%s",
> +				fsck_msg_types.len ? ',' : '=', var, value);
> +		else
> +			warning("Skipping unknown msg id '%s'", var);

This follows quite familiar pattern found in receive_pack_config();
looking good.

> diff --git a/t/t5504-fetch-receive-strict.sh b/t/t5504-fetch-receive-strict.sh
> index 57ff78c201..004bfebe98 100755
> --- a/t/t5504-fetch-receive-strict.sh
> +++ b/t/t5504-fetch-receive-strict.sh
> @@ -145,6 +145,20 @@ test_expect_success 'push with receive.fsck.skipList' '
>  	git push --porcelain dst bogus
>  '
>  
> +test_expect_success 'fetch with fetch.fsck.skipList' '
> +	commit="$(git hash-object -t commit -w --stdin <bogus-commit)" &&
> +	refspec=refs/heads/bogus:refs/heads/bogus &&
> +	git push . $commit:refs/heads/bogus &&

I see this used in the previous test for receive.fsck.skipList, but
it is an interesting implementation of "git update-ref" that could
be affected by potential fsck error in push-to-receive-pack transport.
As we are interested in transport into "dst" and we want this creation
of our 'bogus' branch to succeed no matter what, it probably is not
a good idea to use "git push ." like this in the context of this test.

Perhaps leave a 'leftoverbits' comment to force us remember to update
all these uses of local push from the script in the future?

> +	rm -rf dst &&
> +	git init dst &&
> +	git --git-dir=dst/.git config fetch.fsckObjects true &&
> +	test_must_fail git --git-dir=dst/.git fetch "file://$(pwd)" $refspec &&

We see that by default fetch.fsckObjects errors out when it notices
the bogus commit object.

> +	git --git-dir=dst/.git config fetch.fsck.skipList dst/.git/SKIP &&
> +	echo $commit >dst/.git/SKIP &&

And then we set up a skip to see ...

> +	git --git-dir=dst/.git fetch "file://$(pwd)" $refspec

... if that is ignored.  Looks great.

Would this second attempt succeed _without_ the SKIP list, I wonder,
though?  

After the initial attempt that transferred the object, inspected it
and then aborted before pointing a ref to make the object reachable,
wouldn't it be possible for the quickfetch codepath to say "ah, we
locally have that object, so let's see it is a descendant of the tip
of one of our refs *and* all the objects it points at (recursively)
are all available in this repository", as we do not quarantine on
the fetch side?

  parent reply	other threads:[~2018-07-27 21:08 UTC|newest]

Thread overview: 69+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-24 15:25 BUG: No way to set fsck.<msg-id> when cloning Ævar Arnfjörð Bjarmason
2018-05-24 15:58 ` Kevin Daudt
2018-05-24 17:04   ` Ævar Arnfjörð Bjarmason
2018-05-24 19:02     ` Jeff King
2018-05-24 19:35       ` [PATCH 0/4] fsck: doc fixes & fetch.fsck.* implementation Ævar Arnfjörð Bjarmason
2018-05-25 19:28         ` [PATCH v2 0/5] " Ævar Arnfjörð Bjarmason
2018-07-27 14:37           ` [PATCH v3 00/10] " Ævar Arnfjörð Bjarmason
2018-07-30 22:13             ` SZEDER Gábor
2018-07-27 14:37           ` [PATCH v3 01/10] receive.fsck.<msg-id> tests: remove dead code Ævar Arnfjörð Bjarmason
2018-07-27 19:11             ` Junio C Hamano
2018-07-27 19:45               ` Ævar Arnfjörð Bjarmason
2018-07-27 22:19                 ` Junio C Hamano
2018-07-27 14:37           ` [PATCH v3 02/10] config doc: don't describe *.fetchObjects twice Ævar Arnfjörð Bjarmason
2018-07-27 19:19             ` Junio C Hamano
2018-07-27 14:37           ` [PATCH v3 03/10] config doc: unify the description of fsck.* and receive.fsck.* Ævar Arnfjörð Bjarmason
2018-07-27 19:29             ` Junio C Hamano
2018-07-27 14:37           ` [PATCH v3 04/10] config doc: elaborate on what transfer.fsckObjects does Ævar Arnfjörð Bjarmason
2018-07-27 19:41             ` Junio C Hamano
2018-07-27 14:37           ` [PATCH v3 05/10] config doc: elaborate on fetch.fsckObjects security Ævar Arnfjörð Bjarmason
2018-07-27 19:45             ` Junio C Hamano
2018-07-28 14:09               ` Ævar Arnfjörð Bjarmason
2018-07-27 14:37           ` [PATCH v3 06/10] transfer.fsckObjects tests: untangle confusing setup Ævar Arnfjörð Bjarmason
2018-07-27 14:37           ` [PATCH v3 07/10] fetch: implement fetch.fsck.* Ævar Arnfjörð Bjarmason
2018-07-27 20:18             ` Junio C Hamano
2018-07-27 21:08             ` Junio C Hamano [this message]
2018-07-30 14:58             ` Duy Nguyen
2018-07-30 15:06               ` Ævar Arnfjörð Bjarmason
2018-07-27 14:37           ` [PATCH v3 08/10] fsck: test & document {fetch,receive}.fsck.* config fallback Ævar Arnfjörð Bjarmason
2018-07-27 21:28             ` Junio C Hamano
2018-07-27 14:37           ` [PATCH v3 09/10] fsck: add stress tests for fsck.skipList Ævar Arnfjörð Bjarmason
2018-07-27 14:37           ` [PATCH v3 10/10] fsck: test and document unknown fsck.<msg-id> values Ævar Arnfjörð Bjarmason
2018-07-27 19:50             ` Ævar Arnfjörð Bjarmason
2018-07-27 21:43             ` Junio C Hamano
2018-07-28 13:55               ` Ævar Arnfjörð Bjarmason
2018-07-30 14:47                 ` Junio C Hamano
2018-05-25 19:28         ` [PATCH v2 1/5] config doc: don't describe *.fetchObjects twice Ævar Arnfjörð Bjarmason
2018-05-25 21:07           ` Eric Sunshine
2018-05-25 19:28         ` [PATCH v2 2/5] config doc: unify the description of fsck.* and receive.fsck.* Ævar Arnfjörð Bjarmason
2018-05-25 21:16           ` Eric Sunshine
2018-05-28  9:45             ` Junio C Hamano
2018-05-28 16:44               ` Ævar Arnfjörð Bjarmason
2018-05-30  3:05                 ` Junio C Hamano
2018-05-30  3:39                   ` Junio C Hamano
2018-05-31  7:20                   ` Ævar Arnfjörð Bjarmason
2018-06-01  0:11                     ` Junio C Hamano
2018-05-25 19:28         ` [PATCH v2 3/5] config doc: elaborate on what transfer.fsckObjects does Ævar Arnfjörð Bjarmason
2018-05-25 21:19           ` Eric Sunshine
2018-05-25 19:28         ` [PATCH v2 4/5] config doc: mention future aspirations for transfer.fsckObjects Ævar Arnfjörð Bjarmason
2018-05-25 20:33           ` Christian Couder
2018-05-25 19:28         ` [PATCH v2 5/5] fetch: implement fetch.fsck.* Ævar Arnfjörð Bjarmason
2018-05-30  3:47           ` Junio C Hamano
2018-05-31  7:23             ` Ævar Arnfjörð Bjarmason
2018-05-28  9:48         ` [PATCH 0/4] fsck: doc fixes & fetch.fsck.* implementation Junio C Hamano
2018-05-24 19:35       ` [PATCH 1/4] config doc: don't describe *.fetchObjects twice Ævar Arnfjörð Bjarmason
2018-05-25  3:18         ` Junio C Hamano
2018-05-24 19:35       ` [PATCH 2/4] config doc: unify the description of fsck.* and receive.fsck.* Ævar Arnfjörð Bjarmason
2018-05-24 19:53         ` Eric Sunshine
2018-05-24 20:12           ` Ævar Arnfjörð Bjarmason
2018-05-24 22:49             ` Eric Sunshine
2018-05-25  2:07               ` Junio C Hamano
2018-05-24 19:35       ` [PATCH 3/4] config doc: elaborate on what transfer.fsckObjects does Ævar Arnfjörð Bjarmason
2018-05-24 20:15         ` Eric Sunshine
2018-05-25  3:22           ` Junio C Hamano
2018-05-31  7:32             ` Ævar Arnfjörð Bjarmason
2018-05-24 19:35       ` [PATCH 4/4] fetch: implement fetch.fsck.* Ævar Arnfjörð Bjarmason
2018-05-25  4:09         ` Junio C Hamano
2018-05-24 17:04 ` BUG: No way to set fsck.<msg-id> when cloning Jeff King
2018-05-24 20:48 ` Thomas Braun
2018-05-25  7:36   ` Ævar Arnfjörð Bjarmason

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