[Pkg-puppet-devel] Bug#529555: onlyif + unless precedence

[Jayen Ashar]

On Sun, Sep 30, 2012 at 7:41 AM, Micah Anderson <micah at riseup.net> wrote:
>> http://reductivelabs.com/trac/puppet/wiki/TypeReference#exec
>> onlyif
>> If this parameter is set, then this exec will only run if the command returns 0.
>> unless
>> If this parameter is set, then this exec will run unless the command returns 0.
>>
>> So, If I specify something like:
>>   exec {
>>     "rm /usr/share/man/man1/x-window-manager.1.gz":
>>       onlyif => "test -L /usr/share/man/man1/x-window-manager.1.gz",
>>       unless => "stat -L /usr/share/man/man1/x-window-manager.1.gz",
>>       path => "/usr/bin:/usr/sbin:/bin";
>>   }
>>
>> Or what if x-window-manager.1.gz doesn't exist?  The onlyif and unless commands both return non-zero.  the unless parameter says to run the exec command, but the onlyif says not to run it.
>
> I confess, I dont understand what it is you are trying to do. Could you clarify
> a little bit?
>
> Also, have you tried this in a newer version of puppet? You reported this when
> puppet was at 0.24, and things have changed significantly since then. It would
> be good to know if this is still an issue in newer versions.
>
> thanks,
> micah

I've stopped using puppet, so I won't be trying a newer version of
puppet, but what I was trying to do was (iirc) remove that file if it
was a broken link.

The paradox created in the example was to ask what happens when
"onlyif" and "unless"  conflict, that is, onlyif says _not_ to execute
rm (the onlyif command returns 1) and unless says _to_ execute rm (the
unless command returns 1).  If I remember correctly, the rm was
executed despite having the onlyif check the existence of the link.

--Jayen