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From: Josh Steadmon <steadmon@google.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: git@vger.kernel.org
Subject: Re: [PATCH v2 08/11] fetch-pack: advertise trace2 SID in capabilities
Date: Wed, 11 Nov 2020 15:32:10 -0800	[thread overview]
Message-ID: <20201111233210.GH36751@google.com> (raw)
In-Reply-To: <xmqqd00rk3t6.fsf@gitster.c.googlers.com>

On 2020.11.05 11:21, Junio C Hamano wrote:
> Josh Steadmon <steadmon@google.com> writes:
> 
> >> The same comment as 05/11 and 06/11 applies to this repeated
> >> appearance of this boolean expression:
> >> 
> >> 	advertise_trace2_sid && trace2_is_enabled()
> >> 
> >> If we are committed to stick to the "even if we were told to
> >> advertise, do not alllocate a session ID" design, perhaps it is
> >> cleaner to clear advertise_trace2_sid at the very beginning,
> >> immediately after we learn that the tracing is disabled and the
> >> advertiseSID configuration is read.  That way, everybody needs to
> >> only care about advertise_trace2_sid variable.
> >> 
> >> Incidentally, if we decide to change the semantics to auto allocate
> >> the session ID if advertiseSID configuration asks us to advertise
> >> (it is OK if we do not enable the full trace2 suite), we can still
> >> make the code only check advertise_trace2_sid variable, without
> >> adding repeated check of trace2_is_enabled() everywhere at all.
> >
> > Good point. Once we settle on whether or not to advertise when tracing
> > is enabled, I'll update these conditionals in V3.
> 
> Well, we can update these conditionals _before_ deciding that, and
> that is the whole point of the part of my message you are responding
> to.
> 
> Whether the advertise_trace2_sid means 
> 
>  (1) config asked and tracing enabled, or
> 
>  (2) config asked and we do not care whether tracing is enabled or not
> 
> it makes it easier to flip between (1) and (2) later if you clean up
> the conditional first.
> 
> Thanks.
> 

Done in V3. After some additional offline discussions, I've been
convinced that it makes sense to advertise the session-id capability
even when trace2 is not enabled. Specifically, it can be useful on the
server side to identify multiple connections that make up a single
larger operation, such as in a single `repo` invocation.

  reply	other threads:[~2020-11-12  1:33 UTC|newest]

Thread overview: 66+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-29 21:32 [PATCH 00/10] Advertise trace2 SID in protocol capabilities Josh Steadmon
2020-10-29 21:32 ` [PATCH 01/10] docs: new capability to advertise trace2 SIDs Josh Steadmon
2020-10-29 21:32 ` [PATCH 02/10] docs: new trace2.advertiseSID option Josh Steadmon
2020-10-29 21:32 ` [PATCH 03/10] upload-pack: advertise trace2 SID in v0 capabilities Josh Steadmon
2020-10-29 21:32 ` [PATCH 04/10] receive-pack: " Josh Steadmon
2020-10-29 21:32 ` [PATCH 05/10] serve: advertise trace2 SID in v2 capabilities Josh Steadmon
2020-10-29 21:32 ` [PATCH 06/10] transport: log received server trace2 SID Josh Steadmon
2020-10-29 21:32 ` [PATCH 07/10] fetch-pack: advertise trace2 SID in capabilities Josh Steadmon
2020-10-29 21:32 ` [PATCH 08/10] upload-pack, serve: log received client trace2 SID Josh Steadmon
2020-10-29 21:32 ` [PATCH 09/10] send-pack: advertise trace2 SID in capabilities Josh Steadmon
2020-10-29 21:32 ` [PATCH 10/10] receive-pack: log received client trace2 SID Josh Steadmon
2020-10-30 15:54 ` [PATCH 00/10] Advertise trace2 SID in protocol capabilities Jeff Hostetler
2020-11-02 22:20   ` Josh Steadmon
2020-11-03 21:22     ` Junio C Hamano
2020-11-05 21:01       ` Jeff Hostetler
2020-11-10 21:37       ` Josh Steadmon
2020-10-30 22:31 ` Junio C Hamano
2020-11-02 22:30 ` [PATCH v2 00/11] " Josh Steadmon
2020-11-02 22:30   ` [PATCH v2 01/11] docs: new capability to advertise trace2 SIDs Josh Steadmon
2020-11-03 21:33     ` Junio C Hamano
2020-11-05 21:00       ` Jeff Hostetler
2020-11-12 14:05         ` Ævar Arnfjörð Bjarmason
2020-11-12 17:32           ` Junio C Hamano
2020-11-12 22:10             ` Jeff Hostetler
2020-11-11 22:40       ` Josh Steadmon
2020-11-02 22:31   ` [PATCH v2 02/11] docs: new trace2.advertiseSID option Josh Steadmon
2020-11-03 21:42     ` Junio C Hamano
2020-11-05 19:28       ` Josh Steadmon
2020-11-05 21:24         ` Junio C Hamano
2020-11-06 11:57           ` Johannes Schindelin
2020-11-02 22:31   ` [PATCH v2 03/11] trace2: add a public function for getting the SID Josh Steadmon
2020-11-02 22:31   ` [PATCH v2 04/11] upload-pack: advertise trace2 SID in v0 capabilities Josh Steadmon
2020-11-03 21:48     ` Junio C Hamano
2020-11-05 18:44       ` Josh Steadmon
2020-11-02 22:31   ` [PATCH v2 05/11] receive-pack: " Josh Steadmon
2020-11-02 22:31   ` [PATCH v2 06/11] serve: advertise trace2 SID in v2 capabilities Josh Steadmon
2020-11-04 21:11     ` Junio C Hamano
2020-11-02 22:31   ` [PATCH v2 07/11] transport: log received server trace2 SID Josh Steadmon
2020-11-04 21:14     ` Junio C Hamano
2020-11-11 22:53       ` Josh Steadmon
2020-11-12 21:30         ` Jeff Hostetler
2020-11-02 22:31   ` [PATCH v2 08/11] fetch-pack: advertise trace2 SID in capabilities Josh Steadmon
2020-11-04 21:22     ` Junio C Hamano
2020-11-05 18:58       ` Josh Steadmon
2020-11-05 19:21         ` Junio C Hamano
2020-11-11 23:32           ` Josh Steadmon [this message]
2020-11-02 22:31   ` [PATCH v2 09/11] upload-pack, serve: log received client trace2 SID Josh Steadmon
2020-11-04 21:26     ` Junio C Hamano
2020-11-05 19:12       ` Josh Steadmon
2020-11-02 22:31   ` [PATCH v2 10/11] send-pack: advertise trace2 SID in capabilities Josh Steadmon
2020-11-02 22:31   ` [PATCH v2 11/11] receive-pack: log received client trace2 SID Josh Steadmon
2020-11-03  1:02   ` [PATCH v2 00/11] Advertise trace2 SID in protocol capabilities Junio C Hamano
2020-11-11 23:29 ` [PATCH v3 00/11] Advertise session ID " Josh Steadmon
2020-11-11 23:29   ` [PATCH v3 01/11] docs: new capability to advertise session IDs Josh Steadmon
2020-11-11 23:29   ` [PATCH v3 02/11] docs: new transfer.advertiseSID option Josh Steadmon
2020-11-11 23:29   ` [PATCH v3 03/11] trace2: add a public function for getting the SID Josh Steadmon
2020-11-11 23:29   ` [PATCH v3 04/11] upload-pack: advertise session ID in v0 capabilities Josh Steadmon
2020-11-11 23:29   ` [PATCH v3 05/11] receive-pack: " Josh Steadmon
2020-11-11 23:29   ` [PATCH v3 06/11] serve: advertise session ID in v2 capabilities Josh Steadmon
2020-11-11 23:29   ` [PATCH v3 07/11] transport: log received server session ID Josh Steadmon
2020-11-11 23:29   ` [PATCH v3 08/11] fetch-pack: advertise session ID in capabilities Josh Steadmon
2020-11-11 23:29   ` [PATCH v3 09/11] upload-pack, serve: log received client session ID Josh Steadmon
2020-11-11 23:29   ` [PATCH v3 10/11] send-pack: advertise session ID in capabilities Josh Steadmon
2020-11-11 23:29   ` [PATCH v3 11/11] receive-pack: log received client session ID Josh Steadmon
2020-11-25 22:08   ` [PATCH v3 00/11] Advertise session ID in protocol capabilities Junio C Hamano
2020-11-25 22:56     ` Josh Steadmon

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