[Buildbot-devel] Some questions

[Dennis Schridde]

Hi!

We are using Buildbot since a few days and have some questions:

- How is buildbot.scheduler.Scheduler(isFileImportant) supposed to work?
I tried the following, but without luck (the build is never triggered):
def importantQuickFiles(filename):
    return (filename.endswith(".c") or filename.endswith(".h") or
        filename.endswith(".cpp") or filename.endswith(".hpp") or
        filename.endswith(".am") or filename.endswith(".ac"))
c['schedulers'] = []
from buildbot import scheduler
c['schedulers'].append(scheduler.Scheduler(name="quick", branch=None,
    treeStableTimer=10*60,
    fileIsImportant=importantQuickFiles,
    builderNames=['quick_linux', 'quick_mingw32']))


- I get a weird backtrace in twistd.log, but dont know what creates it and 
whether it should be there. (attached)
buildbot-0.7.7
twisted-2.4.0
twisted-mail-0.3.0
twisted-names-0.3.0
twisted-web-0.6.0
twisted-words-0.4.0
python-2.5.2


- How can I make buildbot.status.words.IRC announce failed builds into a 
channel? Currently it just sits there and reacts to queries.


- What is the default for haltOnFailure and warnOnWarnings, etc (BuildStep)?


- Can I add commands before ./configure in 
buildbot.process.factory.GNUAutoconf ? addStep just seems to be able to 
append, but not prepend.


- Can multiple buildbot.steps.source.SVN with mode=copy share a source 
directory? (Or not have one at all, if the svn server is local and can be 
accessed through file:/// anyway?)


- Finally what I assume is probably a feature request:
Is it possible for buildslave admins to verify the commands their slaves will 
be running?
Currently, if someone would takeover the master (or just make a mistake in 
configuration), this would immediately spread over all the slaves, possibly 
causing damage of some form.

What I currently have in mind is that when the buildslave recieves a set of 
commands to run, it checksums it and compares that with a checksum stored in 
buildbot.tac. The build would only be run if the checksums match.
If they do not match, it fires an email (to the master/notifiers, or the slave 
admin in case his emailaddress is known).
That email would include the new commands to be run, and their checksum, plus 
the request to please run "buildbot confirm-build /path checksum" in case the 
commands are correct.
The checksum stored there could have some special values (real values 
depending on the checksuming algorithm, of course):
0: Never confirmed anything, confirmation request will always be send.
-1: Opted out of confirmation. Treat as if checksums always match.
The latter would be the default for migrated setups.

Thanks in advance,
Dennis
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