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From: Jeff King <peff@peff.net>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: git@vger.kernel.org, Junio C Hamano <gitster@pobox.com>,
	Brandon Williams <bwilliamseng@gmail.com>,
	Jonathan Tan <jonathantanmy@google.com>
Subject: Re: [PATCH v2 7/8] builtin/fetch-pack: support protocol version 2
Date: Fri, 14 Dec 2018 05:17:08 -0500	[thread overview]
Message-ID: <20181214101708.GD13465@sigill.intra.peff.net> (raw)
In-Reply-To: <20181213155817.27666-8-avarab@gmail.com>

On Thu, Dec 13, 2018 at 04:58:16PM +0100, Ævar Arnfjörð Bjarmason wrote:

> From: Jonathan Tan <jonathantanmy@google.com>
> 
> Currently, if support for running Git's entire test suite with protocol
> v2 were added, some tests would fail because the fetch-pack CLI command
> dies if it encounters protocol v2. To avoid this, teach fetch-pack
> support for protocol v2.

I'm definitely on board with this goal.

> @@ -219,9 +220,11 @@ int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
>  			   PACKET_READ_CHOMP_NEWLINE |
>  			   PACKET_READ_GENTLE_ON_EOF);
>  
> -	switch (discover_version(&reader)) {
> +	version = discover_version(&reader);
> +	switch (version) {
>  	case protocol_v2:
> -		die("support for protocol v2 not implemented yet");
> +		get_remote_refs(fd[1], &reader, &ref, 0, NULL, NULL);
> +		break;
>  	case protocol_v1:
>  	case protocol_v0:
>  		get_remote_heads(&reader, &ref, 0, NULL, &shallow);
> @@ -231,7 +234,7 @@ int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
>  	}
>  
>  	ref = fetch_pack(&args, fd, conn, ref, dest, sought, nr_sought,
> -			 &shallow, pack_lockfile_ptr, protocol_v0);
> +			 &shallow, pack_lockfile_ptr, version);

This implementation looks absurdly simple. So simple that it makes me
wonder why we did not just do this in the first place. I.e., is there
some hidden gotcha blocking it, or was it simply that all of the
necessary work happened in the meantime and nobody bothered to flip the
switch?

-Peff

  reply	other threads:[~2018-12-14 10:17 UTC|newest]

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-11 10:42 [PATCH 0/3] protocol v2 and hidden refs Jeff King
2018-12-11 10:43 ` [PATCH 1/3] serve: pass "config context" through to individual commands Jeff King
2018-12-14  2:09   ` Junio C Hamano
2018-12-14  8:20     ` Jeff King
2018-12-15  0:31       ` Junio C Hamano
2018-12-16 10:25         ` Jeff King
2018-12-16 11:12           ` Junio C Hamano
2018-12-18 12:47             ` Jeff King
2018-12-14  8:36   ` Jonathan Nieder
2018-12-14  8:55     ` Jeff King
2018-12-14  9:28       ` Jonathan Nieder
2018-12-14  9:55         ` Jeff King
2018-12-11 10:43 ` [PATCH 2/3] parse_hide_refs_config: handle NULL section Jeff King
2018-12-14  2:11   ` Junio C Hamano
2018-12-11 10:44 ` [PATCH 3/3] upload-pack: support hidden refs with protocol v2 Jeff King
2018-12-11 11:45 ` [PATCH 0/3] protocol v2 and hidden refs Ævar Arnfjörð Bjarmason
2018-12-11 13:55   ` Jeff King
2018-12-11 21:21     ` [PATCH 0/3] Add a GIT_TEST_PROTOCOL_VERSION=X test mode Ævar Arnfjörð Bjarmason
2018-12-11 21:24       ` Ævar Arnfjörð Bjarmason
2018-12-11 21:21     ` [PATCH 1/3] tests: add a special setup where for protocol.version Ævar Arnfjörð Bjarmason
2018-12-12  0:27       ` [PATCH 0/3] Some fixes and improvements Jonathan Tan
2018-12-12  0:27         ` [PATCH 1/3] squash this into your patch Jonathan Tan
2018-12-12  0:27         ` [PATCH 2/3] builtin/fetch-pack: support protocol version 2 Jonathan Tan
2018-12-12  0:27         ` [PATCH 3/3] also squash this into your patch Jonathan Tan
2018-12-13  2:49         ` [PATCH 0/3] Some fixes and improvements Junio C Hamano
2018-12-13 15:58           ` [PATCH v2 0/8] protocol v2 fixes Ævar Arnfjörð Bjarmason
2018-12-17 22:40             ` [PATCH v3 0/4] " Ævar Arnfjörð Bjarmason
2018-12-18 12:48               ` Jeff King
2018-12-17 22:40             ` [PATCH v3 1/4] serve: pass "config context" through to individual commands Ævar Arnfjörð Bjarmason
2018-12-17 22:40             ` [PATCH v3 2/4] parse_hide_refs_config: handle NULL section Ævar Arnfjörð Bjarmason
2018-12-17 22:40             ` [PATCH v3 3/4] upload-pack: support hidden refs with protocol v2 Ævar Arnfjörð Bjarmason
2018-12-17 22:40             ` [PATCH v3 4/4] fetch-pack: support protocol version 2 Ævar Arnfjörð Bjarmason
2019-01-08 19:45               ` Junio C Hamano
2019-01-08 20:38                 ` Jonathan Tan
2019-01-08 21:14                   ` Jeff King
2018-12-13 15:58           ` [PATCH v2 1/8] serve: pass "config context" through to individual commands Ævar Arnfjörð Bjarmason
2018-12-13 15:58           ` [PATCH v2 2/8] parse_hide_refs_config: handle NULL section Ævar Arnfjörð Bjarmason
2018-12-13 15:58           ` [PATCH v2 3/8] upload-pack: support hidden refs with protocol v2 Ævar Arnfjörð Bjarmason
2018-12-13 15:58           ` [PATCH v2 4/8] tests: add a check for unportable env --unset Ævar Arnfjörð Bjarmason
2018-12-13 15:58           ` [PATCH v2 5/8] tests: add a special setup where for protocol.version Ævar Arnfjörð Bjarmason
2018-12-13 19:48             ` Jonathan Tan
2018-12-13 15:58           ` [PATCH v2 6/8] tests: mark & fix tests broken under GIT_TEST_PROTOCOL_VERSION=1 Ævar Arnfjörð Bjarmason
2018-12-13 15:58           ` [PATCH v2 7/8] builtin/fetch-pack: support protocol version 2 Ævar Arnfjörð Bjarmason
2018-12-14 10:17             ` Jeff King [this message]
2018-12-13 15:58           ` [PATCH v2 8/8] tests: mark tests broken under GIT_TEST_PROTOCOL_VERSION=2 Ævar Arnfjörð Bjarmason
2018-12-13 16:08             ` Ævar Arnfjörð Bjarmason
2018-12-14  2:18               ` Junio C Hamano
2018-12-14 10:12               ` Jeff King
2018-12-14 10:55                 ` Ævar Arnfjörð Bjarmason
2018-12-14 11:08                   ` Ævar Arnfjörð Bjarmason
2018-12-17 19:59                     ` Jeff King
2018-12-17 19:57                   ` Jeff King
2018-12-17 22:16                     ` [PATCH] upload-pack: turn on uploadpack.allowAnySHA1InWant=true Ævar Arnfjörð Bjarmason
2018-12-17 22:34                       ` David Turner
2018-12-17 22:57                         ` Ævar Arnfjörð Bjarmason
2018-12-17 23:07                           ` David Turner
2018-12-17 23:14                     ` [PATCH v2 8/8] tests: mark tests broken under GIT_TEST_PROTOCOL_VERSION=2 Jonathan Nieder
2018-12-17 23:36                       ` Ævar Arnfjörð Bjarmason
2018-12-18  0:02                         ` Jonathan Nieder
2018-12-18  9:28                           ` Ævar Arnfjörð Bjarmason
2018-12-18 12:41                             ` Jeff King
2018-12-18 12:36                       ` Jeff King
2018-12-18 13:10                         ` Ævar Arnfjörð Bjarmason
2018-12-26 22:14                           ` Junio C Hamano
2018-12-27 11:26                             ` Ævar Arnfjörð Bjarmason
2018-12-27 17:10                               ` Jonathan Nieder
2018-12-11 21:21     ` [PATCH 2/3] tests: mark tests broken under GIT_TEST_PROTOCOL_VERSION=1 Ævar Arnfjörð Bjarmason
2018-12-11 21:21     ` [PATCH 3/3] tests: mark tests broken under GIT_TEST_PROTOCOL_VERSION=2 Ævar Arnfjörð Bjarmason
2018-12-13 19:53 ` [PATCH 0/3] protocol v2 and hidden refs Jonathan Tan
2018-12-14  8:35   ` Jeff King
2018-12-15 19:53     ` Ævar Arnfjörð Bjarmason
2018-12-16 10:40       ` Jeff King
2018-12-16 11:47         ` Ævar Arnfjörð Bjarmason

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