[users at bb.net] 0.9 cleanup logs from DB

Mikhail Alexeev mike.42.alexeev at gmail.com
Sun Mar 19 18:15:31 UTC 2017

Hello Pierre!

Thank you for reply.

Janitor service is interesting idea.  I'm going to explore your solution 
next week.

This feature is not urgent for me, because I have already done cleanup 
script with delete operations

using sqlalchemy.

Later of course it would be great to have janitor service or cleanup 
feature in cleanupdb script.

On 03/18/2017 05:37 PM, Pierre Tardy wrote:
> Hi Mike,
> This is for me the last big feature that is missing in buildbot nine.
> I have a wip branch here 
> https://github.com/tardyp/buildbot/commits/janitor
> which has quite ambitious design, but I didn't manage to find the 
> contiguous time required to finish it properly.
> The goal of that branch is to add a a janitor service which would 
> implement the logHorizon and buildHorizon features that eight already had.
> There are challenges to be handled in order to implement that properly 
> including multimaster in the picture.
> Maybe I was too ambitious indeed, and a smaller step would be to add a 
> cleanup feature to cleanupdb script.
> This would indeed require some more API in the db api, but nothing 
> particularly hard. The script could be easily written to not require 
> downtime.
> build horizon is a bit more annoying as there is the need to take care 
> of foreign keys cleanup ( steps, logs, buildset, buildrequests, 
> sourcestamps )
> Please let me know if you want to take a look at that feature
> Regards,
> Pierre
> On Fri, Mar 17, 2017 at 9:17 AM Mike Alexeev 
> <mike.42.alexeev at gmail.com <mailto:mike.42.alexeev at gmail.com>> wrote:
>     Hello.
>     I have a question about deleting old logchunks from DB in buildbot
>     0.9.
>     Logchunks table is the biggest and grows quickly even with
>     compression.
>     I haven't found methods in data api for delete.
>     So I decided to delete logs and their logchunks using sqlalchemy
>     in cron task.
>     It's not breaks anything as I can see.
>     Is there better way?
>     Maybe this feature should be added in cleanupdb and configured in
>     main config?
>     Maybe there should be options for delete other old records in DB
>     (builds, steps, etc)?
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