[asterisk-dev] Alembic in 12 SVN

[Joshua Colp]

Matthew Jordan wrote:
> On Mon, Mar 17, 2014 at 11:02 AM, Joshua Colp<jcolp at digium.com>  wrote:
>> Greetings all,
>>
>> Awhile ago when I was working on PJSIP DNS Matt brought up adding the option
>> to Alembic. Through doing so I created a basic alembic.ini and started a new
>> migration script. Unfortunately when attempting to add a new revision I
>> received:
>>
>>    Only a single head is supported. The script directory has multiple heads
>> (due to branching), which must be resolved by manually editing
>>    the revision files to form a linear sequence. Run `alembic branches` to
>> see the divergence(s).
>>
>> Running the "alembic branches" command does indeed show we have some
>> branches:
>>
>> 2fc7930b41b3 ->  21e526ad3040 (branchpoint), add pjsip debug option
>>               ->  21e526ad3040 ->  28887f25a46f (head), Create queue tables
>>               ->  21e526ad3040 ->  4c573e7135bd (head), Fix tos and cos field
>> types
>>
>> Looks like we're going to need to change them to get a clean upgrade path.
>>
>
> Hm. I think we're starting to lose a bit of cohesion :-)
>
> Since all of the scripts in 'config' build on top of each other, one
> of those should revise the other to create a linear chain. Which one
> it is doesn't matter, since they were both added for what will become
> 12.2.0.
>
> In retrospect, we should have probably kept each module's realtime
> database tables separate. That would have minimized these kinds of
> changes.
>
> How terrible would it be to nuke the existing scripts and separate
> them all out? :-)

Uhhhhhhh, probably not that hard. (I say that now...)

-- 
Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org