Puppet users - Sep 2008 - Question about redundant includes.

All,

Does anyone know if there is any adverse side effect to including a
class multiple times in different places?

I.e.

class foo { ... }

class bar { include "foo" }

node bob {
  include "foo"
  include "bar"
}

There doesn''t *seem* to be any problem, but I''d like to make
sure I''m
not exploiting something that may change.

It seems to me that a duplicate include should just be ignored....

Thanks,

Trevor

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Hi
> Does anyone know if there is any adverse side effect to including a
> class multiple times in different places?
> 
> I.e.
> 
> class foo { ... }
> 
> class bar { include "foo" }
> 
> node bob {
>   include "foo"
>   include "bar"
> }
> 
> There doesn''t *seem* to be any problem, but I''d like to
make sure I''m
> not exploiting something that may change.
> 
> It seems to me that a duplicate include should just be ignored....

from: http://reductivelabs.com/trac/puppet/wiki/LanguageTutorial

"Classes are evaluated using the include function. If a class is already
evaluated, then include essentially does nothing."

so nothing bad and this is imho exactly what include is for: ensure that
a class is evaluated if it haven''t been yet.

greets pete

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Pete,

That''s what I thought, I was just a little nervous about the
''essentially'' language.

I''ll assume the best and move along!

Thanks,

Trevor

On Wed, Sep 10, 2008 at 9:10 AM, Peter Meier <peter.meier@immerda.ch>
wrote:
>
> Hi
>
>> Does anyone know if there is any adverse side effect to including a
>> class multiple times in different places?
>>
>> I.e.
>>
>> class foo { ... }
>>
>> class bar { include "foo" }
>>
>> node bob {
>>   include "foo"
>>   include "bar"
>> }
>>
>> There doesn''t *seem* to be any problem, but I''d like
to make sure I''m
>> not exploiting something that may change.
>>
>> It seems to me that a duplicate include should just be ignored....
>
>
> from: http://reductivelabs.com/trac/puppet/wiki/LanguageTutorial
>
> "Classes are evaluated using the include function. If a class is
already
> evaluated, then include essentially does nothing."
>
> so nothing bad and this is imho exactly what include is for: ensure that
> a class is evaluated if it haven''t been yet.
>
> greets pete
>
> >
>
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