RFE: download patch between arbitrary revisions
Konstantin Ryabitsev
mricon at kernel.org
Tue Aug 6 21:23:29 CEST 2013
On 16/06/13 03:18 PM, Lukas Fleischer wrote:
>>>>>>> There is currently a way to render a diff between two arbitrary objects,
>>>>>>> e.g.:
>>>>>>>
>>>>>>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/diff/?id=v3.10-rc4&id2=v3.10-rc3
>>>>>>>
>>>>>>> However, there doesn't appear to be a way to download a patch in the
>>>>>>> same way -- it will only make patch against id's parent. E.g.:
>>>>>>>
>>>>>>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/patch/?id=v3.10-rc4&id2=v3.10-rc3
>>>>>>>
>>>>>>> Any way we can make the behaviour of patch match that of diff?
>>>>>>
>>>> [...]
>>>>
>>>> So:
>>>>
>>>> /patch/?id=v1.8.3.1&id2=v1.8.3
>>>>
>>>> generates something like "git format-patch v1.8.3..v1.8.3.1". And
>>>>
>>>> /rawdiff/?id=v1.8.3.1&id2=v1.8.3
>>>>
>>>> generates the diff with no HTML around it.
>>>>
>>>> The latter could be a query parameter instead ("raw=1"?). Having not
>>>> investigated the impact on the code, I have no preference for one over
>>>> the other.
>>>
>>> Sounds good to me either way. Jason?
>>>
>>> Also, I just wondered whether this could be used to DoS servers when
>>> requesting a series of patches for a huge range of revisions... Maybe
>>> there should be some kind of limit?
>>
>> The "diff" version costs about the same regardless of how many revisions
>> are between the endpoints - it's purely a function of the size of the
>> tree (and the number of changed files which probably is affected by how
>> far apart the commits are, but it's still bounded by the size of the
>> tree).
>>
>> I can see it potentially being a problem in the "format-patch" case, so
>> perhaps we want to add a "max-patches-per-request" variable if we do
>> implement that.
>
> Yeah, the `git format-patch` case is what I meant with "requesting a
> series of patches". Limiting the number of patches also sounds good to
> me.
>
> I will go ahead and implement this if Jason likes the idea :)
Hi, all:
We keep getting requests for this feature, so I'm going to bump this in
hopes that this gets implemented in the next release. :)
Best,
--
Konstantin Ryabitsev
Senior Systems Administrator
Linux Foundation Collab Projects
Montréal, Québec
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