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From: Junio C Hamano <gitster@pobox.com>
To: Jonathan Tan <jonathantanmy@google.com>
Cc: git@vger.kernel.org
Subject: Re: [PATCH 5/6] fetch: teach independent negotiation (no packfile)
Date: Thu, 08 Apr 2021 22:41:53 -0700	[thread overview]
Message-ID: <xmqqczv4nhem.fsf@gitster.g> (raw)
In-Reply-To: <4696c8e901808853d17af10d5a6d95cd4711c6d5.1617929278.git.jonathantanmy@google.com> (Jonathan Tan's message of "Thu, 8 Apr 2021 18:10:02 -0700")

Jonathan Tan <jonathantanmy@google.com> writes:

> There are 2 code paths that do not go through fetch_refs_via_pack() that
> needed to be individually excluded: the bundle transport (excluded
> through requiring smart_options, which the bundle transport doesn't
> support) and transport helpers that do not support takeover.
> Fortunately, none of these support protocol v2.

I am a bit puzzled by this mention of "Fortunately".  If one says
"this shiny new feature only works with protocol v2" and "transport
X does not support protocol v2", doesn't it imply that the shiny new
feature cannot be used with the transport X, which is unfortunate?

I can understand "while interacting with the bundle transport, you
cannot do independent negotiation, but there is nothing to negotiate
with a static file that is a bundle anyway, so nothing is lost" as
an explanation, though.

>  Documentation/technical/protocol-v2.txt |  8 +++
>  builtin/fetch.c                         | 27 +++++++-
>  fetch-pack.c                            | 89 +++++++++++++++++++++++--
>  fetch-pack.h                            | 11 +++
>  object.h                                |  2 +-
>  t/t5701-git-serve.sh                    |  2 +-
>  t/t5702-protocol-v2.sh                  | 89 +++++++++++++++++++++++++
>  transport-helper.c                      | 10 +++
>  transport.c                             | 30 +++++++--
>  transport.h                             |  6 ++
>  upload-pack.c                           | 18 +++--
>  11 files changed, 275 insertions(+), 17 deletions(-)

It is a bit surprising that there isn't much code removed, as I
expected that we'd be factoring out and reusing existing code used
in negotiation for fetching into a new helper function (hence the
existing codepath would lose a lot of code to be replaced by a call
to a new helper function), but that is apparently not what is going
on.

I'll have to revisit this step and the next step tomorrow.

Thanks.

  reply	other threads:[~2021-04-09  5:43 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-09  1:09 [PATCH 0/6] Push negotiation Jonathan Tan
2021-04-09  1:09 ` [PATCH 1/6] fetch-pack: buffer object-format with other args Jonathan Tan
2021-04-09  4:49   ` Junio C Hamano
2021-04-09 16:24     ` Jonathan Tan
2021-04-09  1:09 ` [PATCH 2/6] fetch-pack: refactor process_acks() Jonathan Tan
2021-04-09  5:08   ` Junio C Hamano
2021-05-03 16:30   ` Derrick Stolee
2021-04-09  1:10 ` [PATCH 3/6] fetch-pack: refactor add_haves() Jonathan Tan
2021-04-09  5:20   ` Junio C Hamano
2021-04-09  1:10 ` [PATCH 4/6] fetch-pack: refactor command and capability write Jonathan Tan
2021-04-09  5:27   ` Junio C Hamano
2021-04-09  1:10 ` [PATCH 5/6] fetch: teach independent negotiation (no packfile) Jonathan Tan
2021-04-09  5:41   ` Junio C Hamano [this message]
2021-04-09 16:38     ` Jonathan Tan
2021-05-03 15:25   ` Derrick Stolee
2021-05-03 15:40     ` Derrick Stolee
2021-05-03 21:52     ` Jonathan Tan
2021-04-09  1:10 ` [PATCH 6/6] send-pack: support push negotiation Jonathan Tan
2021-05-03 15:35   ` Derrick Stolee
2021-05-03 22:02     ` Jonathan Tan
2021-05-04 17:26       ` Derrick Stolee
2021-04-30  5:42 ` [PATCH 0/6] Push negotiation Junio C Hamano
2021-04-30 17:33   ` Derrick Stolee
2021-05-04 21:15 ` [PATCH v2 0/5] " Jonathan Tan
2021-05-04 21:15   ` [PATCH v2 1/5] fetch-pack: refactor process_acks() Jonathan Tan
2021-05-04 21:15   ` [PATCH v2 2/5] fetch-pack: refactor add_haves() Jonathan Tan
2021-05-04 21:16   ` [PATCH v2 3/5] fetch-pack: refactor command and capability write Jonathan Tan
2021-05-04 21:16   ` [PATCH v2 4/5] fetch: teach independent negotiation (no packfile) Jonathan Tan
2021-05-05  1:53     ` Junio C Hamano
2021-05-05 16:42       ` Derrick Stolee
2021-05-06  2:12         ` Junio C Hamano
2021-05-05 16:44     ` Derrick Stolee
2021-05-04 21:16   ` [PATCH v2 5/5] send-pack: support push negotiation Jonathan Tan

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