[Buildbot-devel] Discussion on source steps

[Amber Yust]

I actually really like the sound of a "generic source helper" step that
would simply call user-defined scripts for the various actions in Buildbot's
source abstraction, in addition to the more specific VCSes supported.

~Amber

On Mon, Jun 6, 2011 at 11:38 AM, Dmitry Nezhevenko <dion at dion.org.ua> wrote:

> On Mon, Jun 06, 2011 at 10:33:06PM +0530, Pradeepkumar Gayam wrote:
> > I believe almost all modern VCS has this facility. If they don't, we will
> > implement a workaround even if we have to 6-7 all the commands. We are
> also
> > planning to give an option to run custom command to clean the build
> > directory.
>
> This one looks very interesting for me. But maybe even better. Something
> like
> script-based VCS command that calls custom helper scripts for every
> particular action:
> - Cleanup
> - Update to specific branch and revision.
>
> Update one should also return somehow got_revision. Or maybe just third
> command "get current revision".
>
> These two (or three) commands will probably cover all checkout-related
> stuff at
> once. At least for most of proprietary VCS-es.
>
> If this is acceptable, I will probably try to contribute once interfaces
> will be stable enough.
>
> Another VCS-related issue I'm experiencing is some kind of timeout
> handling. Usually VCS operations depends on network or any other factors
> that may fail. In case of network-related issues (like temporary 30
> seconds downtime) it sounds reasonable to not fail source step and just
> wait a bit and retry. At the same time not every VCS error should cause
> retry. Like "unable to authenticate" error or "repository not found" has
> no changes to recover.
>
> Currently buildbot doesn't provide any way to handle this some "standard"
> way and it's up to slave command to handle everything. I'm doing
> everything on slave by reading CLI client exit code and sometimes parsing
> of it's stderr.
>
> So since you are trying to refactor VCS stuff, maybe it's good idea to
> think about this.
>
> --
> WBR, Dmitry
>
>
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