puppet - Conditional logic on whether to include subclass -

puppet - Conditional logic on whether to include subclass -

i'm trying edit init.pp file include subclass if variable has been set. i've initialized variables undef, when if statement below errors , says:

syntax error @ 'if'; expected '}'

when write case statement, works fine not if. thought why is?

class {'wlsvr': } -> case $jdbc_filename { undef: {} default: {class {'jdbc':}} } -> if $managedsvr_name != undef { class {'managedsvr': } }

please rid of unfortunate habit of using

->

between every other puppet statement.

this chainging arrow introduces dependency between resources/classes connects. should used when dependency needed. issues opening to

gratuitous dependency trees when building dependencies between classes (you here) issues when refactoring code, because if , cases statements not (always) form equivalent of resources or classes

as aside, beneficial avoid the

class { 'classname': }

syntax declaring classes , prefer

include classname

instead, because former costs singleton semantics of puppet classes.

puppet