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From: Han-Wen Nienhuys <hanwen@google.com>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: git@vger.kernel.org, Junio C Hamano <gitster@pobox.com>,
	Jonathan Tan <jonathantanmy@google.com>,
	Josh Steadmon <steadmon@google.com>,
	Bruno Albuquerque <bga@google.com>, Jeff King <peff@peff.net>,
	Eric Sunshine <sunshine@sunshineco.com>,
	Christian Couder <chriscool@tuxfamily.org>
Subject: Re: [PATCH v2 7/8] serve: add support for a "startup" git_config() callback
Date: Mon, 5 Jul 2021 14:23:20 +0200	[thread overview]
Message-ID: <CAFQ2z_Pbn2=0NuNNC9TnuLar91Nn2=CBZ7cs8ErM4guEi9BsEg@mail.gmail.com> (raw)
In-Reply-To: <patch-7.8-0a4fb01ae38-20210628T191634Z-avarab@gmail.com>

On Mon, Jun 28, 2021 at 9:19 PM Ævar Arnfjörð Bjarmason
<avarab@gmail.com> wrote:
> So let's support this common pattern as a "startup_config" callback,
> making use of our recently added "call_{advertise,command}()"

I think this is an improvement over ensure_config_read(), but I don't
understand the whole picture. If you want to control configuration and
be sure it is set early, isn't it more natural to put this in struct
serve_options? With your patch, there are still two routes to
injecting configuration: 'struct serve_options' and the git config.

IMO the former is more principled, and the control flow (serve_options
is an argument to serve()) ensures that the options are read only
once.

> +       /*
> +        * A git_config() callback that'll be called only once for the
> +        * lifetime of the process, possibly over many different

Putting it in a struct supplied by the caller provides more
flexibility for testing: you could test multiple behaviors from a
single process, by calling serve multiple times supplying different
arguments.

-- 
Han-Wen Nienhuys - Google Munich
I work 80%. Don't expect answers from me on Fridays.
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  parent reply	other threads:[~2021-07-05 12:23 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-16 14:16 [PATCH 0/5] serve: add "configure" callback Ævar Arnfjörð Bjarmason
2021-06-16 14:16 ` [PATCH 1/5] serve: mark has_capability() as static Ævar Arnfjörð Bjarmason
2021-06-16 16:28   ` Eric Sunshine
2021-06-17  0:45     ` Junio C Hamano
2021-06-16 14:16 ` [PATCH 2/5] transport: rename "fetch" in transport_vtable to "fetch_refs" Ævar Arnfjörð Bjarmason
2021-06-16 14:16 ` [PATCH 3/5] transport: use designated initializers Ævar Arnfjörð Bjarmason
2021-06-16 14:16 ` [PATCH 4/5] serve: " Ævar Arnfjörð Bjarmason
2021-06-16 14:16 ` [PATCH 5/5] serve: add support for a git_config() callback Ævar Arnfjörð Bjarmason
2021-06-16 16:22   ` Jeff King
2021-06-16 16:23 ` [PATCH 0/5] serve: add "configure" callback Jeff King
2021-06-17  0:49   ` Junio C Hamano
2021-06-28 19:19 ` [PATCH v2 0/8] serve: add "startup_config" callback Ævar Arnfjörð Bjarmason
2021-06-28 19:19   ` [PATCH v2 1/8] serve: mark has_capability() as static Ævar Arnfjörð Bjarmason
2021-06-28 19:19   ` [PATCH v2 2/8] transport: rename "fetch" in transport_vtable to "fetch_refs" Ævar Arnfjörð Bjarmason
2021-06-28 19:19   ` [PATCH v2 3/8] transport: use designated initializers Ævar Arnfjörð Bjarmason
2021-06-28 19:19   ` [PATCH v2 4/8] serve: " Ævar Arnfjörð Bjarmason
2021-06-28 19:19   ` [PATCH v2 5/8] serve.c: add call_{advertise,command}() indirection Ævar Arnfjörð Bjarmason
2021-06-28 19:19   ` [PATCH v2 6/8] serve.c: add trace2 regions for advertise & command Ævar Arnfjörð Bjarmason
2021-07-01 16:30     ` Jeff King
2021-07-02 12:54       ` Ævar Arnfjörð Bjarmason
2021-07-05 12:24     ` Han-Wen Nienhuys
2021-06-28 19:19   ` [PATCH v2 7/8] serve: add support for a "startup" git_config() callback Ævar Arnfjörð Bjarmason
2021-07-01 16:43     ` Jeff King
2021-07-01 16:47       ` Jeff King
2021-07-02 12:55       ` Ævar Arnfjörð Bjarmason
2021-07-02 21:13         ` Jeff King
2021-07-05 12:23     ` Han-Wen Nienhuys [this message]
2021-07-05 12:34     ` Han-Wen Nienhuys
2021-06-28 19:19   ` [PATCH v2 8/8] upload-pack.c: convert to new serve.c "startup" config cb Ævar Arnfjörð Bjarmason
2021-07-05 14:00     ` Han-Wen Nienhuys
2021-07-21 23:40   ` [PATCH v3 00/12] serve.[ch]: general API cleanup Ævar Arnfjörð Bjarmason
2021-07-21 23:40     ` [PATCH v3 01/12] serve: mark has_capability() as static Ævar Arnfjörð Bjarmason
2021-07-21 23:40     ` [PATCH v3 02/12] transport: rename "fetch" in transport_vtable to "fetch_refs" Ævar Arnfjörð Bjarmason
2021-07-21 23:40     ` [PATCH v3 03/12] transport: use designated initializers Ævar Arnfjörð Bjarmason
2021-07-21 23:40     ` [PATCH v3 04/12] serve: " Ævar Arnfjörð Bjarmason
2021-07-21 23:40     ` [PATCH v3 05/12] serve.c: add call_{advertise,command}() indirection Ævar Arnfjörð Bjarmason
2021-07-21 23:40     ` [PATCH v3 06/12] serve: add support for a "startup" git_config() callback Ævar Arnfjörð Bjarmason
2021-07-21 23:40     ` [PATCH v3 07/12] serve.c: move version line to advertise_capabilities() Ævar Arnfjörð Bjarmason
2021-07-21 23:40     ` [PATCH v3 08/12] serve.[ch]: remove "serve_options", split up --advertise-refs code Ævar Arnfjörð Bjarmason
2021-07-21 23:40     ` [PATCH v3 09/12] {upload,receive}-pack tests: add --advertise-refs tests Ævar Arnfjörð Bjarmason
2021-08-03  6:00       ` [PATCH] fixup! " Carlo Marcelo Arenas Belón
2021-07-21 23:40     ` [PATCH v3 10/12] upload-pack: document and rename --advertise-refs Ævar Arnfjörð Bjarmason
2021-07-21 23:40     ` [PATCH v3 11/12] upload-pack.c: convert to new serve.c "startup" config cb Ævar Arnfjörð Bjarmason
2021-07-21 23:40     ` [PATCH v3 12/12] serve.[ch]: don't pass "struct strvec *keys" to commands Ævar Arnfjörð Bjarmason
2021-08-02 21:07     ` [PATCH v3 00/12] serve.[ch]: general API cleanup Josh Steadmon
2021-08-05  1:25     ` [PATCH v4 00/10] serve.[ch]: general API cleanup + --advertise-refs cleanup Ævar Arnfjörð Bjarmason
2021-08-05  1:25       ` [PATCH v4 01/10] serve: mark has_capability() as static Ævar Arnfjörð Bjarmason
2021-08-05  1:25       ` [PATCH v4 02/10] transport: rename "fetch" in transport_vtable to "fetch_refs" Ævar Arnfjörð Bjarmason
2021-08-05  1:25       ` [PATCH v4 03/10] transport: use designated initializers Ævar Arnfjörð Bjarmason
2021-08-05  1:25       ` [PATCH v4 04/10] serve: " Ævar Arnfjörð Bjarmason
2021-08-05  1:25       ` [PATCH v4 05/10] serve.[ch]: don't pass "struct strvec *keys" to commands Ævar Arnfjörð Bjarmason
2021-08-05  1:25       ` [PATCH v4 06/10] serve: move transfer.advertiseSID check into session_id_advertise() Ævar Arnfjörð Bjarmason
2021-08-05  1:25       ` [PATCH v4 07/10] serve.c: move version line to advertise_capabilities() Ævar Arnfjörð Bjarmason
2021-08-05  1:25       ` [PATCH v4 08/10] {upload,receive}-pack tests: add --advertise-refs tests Ævar Arnfjörð Bjarmason
2021-08-05  1:25       ` [PATCH v4 09/10] serve.[ch]: remove "serve_options", split up --advertise-refs code Ævar Arnfjörð Bjarmason
2021-08-24 16:52         ` Derrick Stolee
2021-08-05  1:25       ` [PATCH v4 10/10] upload-pack: document and rename --advertise-refs Ævar Arnfjörð Bjarmason
2021-08-24 16:55       ` [PATCH v4 00/10] serve.[ch]: general API cleanup + --advertise-refs cleanup Derrick Stolee

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