On Thursday, December 4, 2014 3:01:02 AM UTC-6, Martijn Grendelman
wrote:Hence the following code in puppetlabs-apache's vhost type:
>
> # The base class must be included first because it is used by parameter
> defaults
> if ! defined(Class['apache']) {
> fail('You must include the apache base class before using any apache
> defined resources')
> }
>
>
Yuck. At least that's a relatively benign use of defined(), in that when
its inherent evaluation-order dependency falls the wrong way the result is
certain catalog compilation failure (as opposed to a possibly-wrong
declaration). That there is a need for this sort of thing at all is a
function of the mere *existence* of the resource-like class declaration
syntax. How I long for the days when you could simply rely on classes'
singleton nature, so that instead of the above it would be safe simply to
write "include 'apache'".
John
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