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From: "Jakub Narębski" <jnareb@gmail.com>
To: Lars Schneider <larsxschneider@gmail.com>
Cc: "Junio C Hamano" <gitster@pobox.com>,
	"Git Mailing List" <git@vger.kernel.org>,
	"Torsten Bögershausen" <tboegi@web.de>,
	mlbright@gmail.com,
	"Remi Galan Alfonso" <remi.galan-alfonso@ensimag.grenoble-inp.fr>,
	"Nguyen Thai Ngoc Duy" <pclouds@gmail.com>,
	"Eric Wong" <e@80x24.org>,
	"Ramsay Jones" <ramsay@ramsayjones.plus.com>,
	"Jeff King" <peff@peff.net>,
	"Johannes Schindelin" <johannes.schindelin@gmx.de>
Subject: Re: [PATCH v2 5/5] convert: add filter.<driver>.process option
Date: Sat, 30 Jul 2016 11:32:00 +0200	[thread overview]
Message-ID: <8f40f520-2fa5-449a-57b8-e0fed6b92061@gmail.com> (raw)
In-Reply-To: <2435ACEE-19BE-4995-B929-BCEF658F278E@gmail.com>

W dniu 2016-07-30 o 01:44, Lars Schneider pisze:
> On 30 Jul 2016, at 01:11, Jakub Narębski <jnareb@gmail.com> wrote:

>> I think the protocol should be either: <size> + <contents>, or
>> <size unknown> + <contents> + <flush>, that is do not use flush
>> packet if size is known upfront -- it would be a second point
>> of truth (SPOT principle).
>
> As I mentioned elsewhere a <flush> packet is always send right now.
> I have no strong opinion if this is good or bad. The implementation
> was a little bit simpler and that's why I did it. I will implement 
> whatever option the majority prefers :-)

Well, if we treat it as a size hint, then it is all right; as you
say it makes for a simpler implementation: read till flush.  Git
should not error out if there is mismatch between specified and
actual size of return from the filter; filter can do whatever
it wants.

I see there is v3 series sent, so I'll move the discussion there.
One thing: we probably would want for the size / size-hint
packet to be extensible, either

  size=<size> [(SPC <key>=<value>)...] "\n"

or

  <size> [(SPC <sth>)...] "\n"

that is, space separated list starting with size / size hint.

Upfront error could be signalled by putting for example "error"
in place of size, e.g.

  error <error description> "\n"

-- 
Jakub Narębski

  reply	other threads:[~2016-07-30  9:32 UTC|newest]

Thread overview: 77+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-22 15:48 [PATCH v1 0/3] Git filter protocol larsxschneider
2016-07-22 15:48 ` [PATCH v1 1/3] convert: quote filter names in error messages larsxschneider
2016-07-22 15:48 ` [PATCH v1 2/3] convert: modernize tests larsxschneider
2016-07-26 15:18   ` Remi Galan Alfonso
2016-07-26 20:40     ` Junio C Hamano
2016-07-22 15:49 ` [PATCH v1 3/3] convert: add filter.<driver>.useProtocol option larsxschneider
2016-07-22 22:32   ` Torsten Bögershausen
2016-07-24 12:09     ` Lars Schneider
2016-07-22 23:19   ` Ramsay Jones
2016-07-22 23:28     ` Ramsay Jones
2016-07-24 17:16     ` Lars Schneider
2016-07-24 22:36       ` Ramsay Jones
2016-07-24 23:22         ` Jakub Narębski
2016-07-25 20:32           ` Lars Schneider
2016-07-26 10:58             ` Jakub Narębski
2016-07-25 20:24         ` Lars Schneider
2016-07-23  0:11   ` Jakub Narębski
2016-07-23  7:27     ` Eric Wong
2016-07-26 20:00       ` Jeff King
2016-07-24 18:36     ` Lars Schneider
2016-07-24 20:14       ` Jakub Narębski
2016-07-24 21:30         ` Jakub Narębski
2016-07-25 20:16           ` Lars Schneider
2016-07-26 12:24             ` Jakub Narębski
2016-07-25 20:09         ` Lars Schneider
2016-07-26 14:18           ` Jakub Narębski
2016-07-23  8:14   ` Eric Wong
2016-07-24 19:11     ` Lars Schneider
2016-07-25  7:27       ` Eric Wong
2016-07-25 15:48       ` Duy Nguyen
2016-07-22 21:39 ` [PATCH v1 0/3] Git filter protocol Junio C Hamano
2016-07-24 11:24   ` Lars Schneider
2016-07-26 20:11     ` Jeff King
2016-07-27  0:06 ` [PATCH v2 0/5] " larsxschneider
2016-07-27  0:06   ` [PATCH v2 1/5] convert: quote filter names in error messages larsxschneider
2016-07-27 20:01     ` Jakub Narębski
2016-07-28  8:23       ` Lars Schneider
2016-07-27  0:06   ` [PATCH v2 2/5] convert: modernize tests larsxschneider
2016-07-27  0:06   ` [PATCH v2 3/5] pkt-line: extract and use `set_packet_header` function larsxschneider
2016-07-27  0:20     ` Junio C Hamano
2016-07-27  9:13       ` Lars Schneider
2016-07-27 16:31         ` Junio C Hamano
2016-07-27  0:06   ` [PATCH v2 4/5] convert: generate large test files only once larsxschneider
2016-07-27  2:35     ` Torsten Bögershausen
2016-07-27 13:32       ` Jeff King
2016-07-27 16:50         ` Lars Schneider
2016-07-27  0:06   ` [PATCH v2 5/5] convert: add filter.<driver>.process option larsxschneider
2016-07-27  1:32     ` Jeff King
2016-07-27 17:31       ` Lars Schneider
2016-07-27 18:11         ` Jeff King
2016-07-28 12:10           ` Lars Schneider
2016-07-28 13:35             ` Jeff King
2016-07-27  9:41     ` Eric Wong
2016-07-29 10:38       ` Lars Schneider
2016-07-29 11:24         ` Jakub Narębski
2016-07-29 11:31           ` Lars Schneider
2016-08-05 18:55         ` Eric Wong
2016-08-05 23:26           ` Lars Schneider
2016-08-05 23:38             ` Eric Wong
2016-07-27 23:31     ` Jakub Narębski
2016-07-29  8:04       ` Lars Schneider
2016-07-29 17:35         ` Junio C Hamano
2016-07-29 23:11           ` Jakub Narębski
2016-07-29 23:44             ` Lars Schneider
2016-07-30  9:32               ` Jakub Narębski [this message]
2016-07-28 10:32     ` Torsten Bögershausen
2016-07-27 19:08   ` [PATCH v2 0/5] Git filter protocol Jakub Narębski
2016-07-28  7:16     ` Lars Schneider
2016-07-28 10:42       ` Jakub Narębski
2016-07-28 13:29       ` Jeff King
2016-07-29  7:40         ` Jakub Narębski
2016-07-29  8:14           ` Lars Schneider
2016-07-29 15:57             ` Jeff King
2016-07-29 16:20               ` Lars Schneider
2016-07-29 16:50                 ` Jeff King
2016-07-29 17:43                   ` Lars Schneider
2016-07-29 18:27                     ` Jeff King

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