Re: [PATCH v5 0/7] refs/reftable: add consistency checks

> Karthik Nayak <karthik.188@gmail.com> writes:
>
>> The reference subsystems allows for adding backend specific consistency
>> checks. These checks are run as part of 'git refs verify'.
>>
>> While the files backend has some consistency checks added, the reftable
>> backend currently has none. This series first tightens the reftable
>> backend to make it a little more strict and then also adds the required
>> infrastructure and some simple consistency checks.
>>
>> Since the reftable backend is treated as a library within the Git
>> codebase, we don't want to spillover our internal fsck implementation
>> into the library. At the same time, the fsck checks need to access
>> internal structures of the reftable library which aren't exposed outside
>> the library.
>>
>> So we solve this by adding a 'reftable/fsck.[ch]' which implements and
>> exposes a checker for the reftable library and returns specific errors
>> as defined by the library. We then add glue code within
>> 'refs/reftable-backend.c' to map these errors to errors which Git's fsck
>> implementation would understand. This allows us to separate concerns.
>>
>> We add the following consistency checks:
>>
>>   1. Check for validating the reftable table name. This is treated as a
>>   warning since the reftable specification only suggests a table name
>>   but doesn't enforce it. Also there is a difference in the table name
>>   used in Git vs that in jGit.
>>
>> We tighten the reftable backend by raising a REFTABLE_FORMAT_ERROR error
>> when:
>>
>> 1. The 'tables.list' file doesn't have a trailing newline.
>>
>> ---
>> Changes in v5:
>> - Added documentation around the return value of 'parse_names()'.
>> - Added a test to validate that 'git refs verify' doesn't barf against
>>   a clean working repository with multiple reftable tables.
>> - Link to v4: https://lore.kernel.org/all/20250926-228-reftable-introduce-consistency-checks-v4-0-c96fd8551c0d@gmail.com
>
> Looking good.  Shall we declare victory and mark the topic for
> 'next' now?
>
> Thanks.