[Buildbot-devel] How to retrieve a property declared in the Waterfall Force Build Property boxes

[John Ford]

  On 8/5/10 4:34 PM, David Mor wrote:
>
> Dear Buildbot Developers,
>
>  I have been reading through the manual hoping to find some clues on 
> retrieving properties, which are set via the Waterfall's Force Build 
> option, in my master.cfg file but have had no luck. I know that those 
> properties are stored in the change object as the manual stated, but I 
> have not discovered a way to retrieve them.
>
> Your help is highly appreciated.
>
> Sincerely,
>
>     David Mor
>
>
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Hi David,

You can't use them directly in your master.cfg, but you can use them in 
a WithProperties class.  To do that you would can use the WithProperties 
class.

from buildbot.steps.shell import WithProperties

Then you can can use it in part of a command

ShellCommand(command=['echo', WithProperties('Building %(buildername)s on %(slavename)s')])

This will run the command with the second argument being transformed 
from 'Building on %(slavename)s' into something like 'Building osx build 
on mac-slave1'.  Any property that has already been set can be retrieved 
at build time in this manner.  You can also use WithProperties in the 
environment and for the workdir if I remember correctly.

You can also use the buildbot.steps.shell.SetProperty class to set a 
property however you like.

Hope that is helpful,

John



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