[Puppet Users] Resource chaining is not being honored

[Johnathan Komara]

Description

I am unable to get class 'profile::b' to run before class 'profile::a'.

Setup

I have two classes that create files, class 'profile::a' and class 
'profile::b'. 

I am following the roles and profiles setup. I have a base profile where I 
am including 'profile::a':

class profile::base {
  include 'modules'
  include '::profile::a'
}


Then I have a class role include the base profile

class role {
  include 'profile::base'
}


And then I have our server roles inherit role:

class role::test_server inherits ::role {
  include '::profile::b'
}


'profile::a'

class profile::a {
  if defined(File['/etc/test.txt']) {
    $var = 'blah1.txt'
  } else {
    $var = 'blah2.txt'
  }

  File {$var : 
    ensure => file,
  }
}


'profile::b'

class profile::b {
  File { '/etc/test.txt' :
    ensure => file,
    owner  => 'root',
    group  => 'root',
}


Problem

'profile::a' should be applied to every server and 'profile::b' is only 
being applied to a few servers. My understanding of resource chaining is 
that I can alter the order in which the classes are ran. I need "b" to run 
first so that I can key off of "defined(File['/etc/test/txt']).

I have tried multiple approaches and I cannot get this to work.

#1

class profile::b {
  File { '/etc/test.txt' :
    ensure => file,
    owner  => 'root',
    group   => 'root',
    before  => Class['profile::a'],
}

#2


class profile::b {
  File { '/etc/test.txt' :
    ensure => file,
    owner  => 'root',
    group   => 'root',
  }

File['/etc/test.txt'] -> Class['profile::a']
}

#3
class profile::a {
  if defined(File['/etc/test.txt']) {
    $var = 'blah1.txt'
  } else {
    $var = 'blah2.txt'
  }

  File {$var : 
    ensure => file,
  }

  File['/etc/test.txt'] -> Class['profile::a']
}

#4
class profile::a {
  if defined(File['/etc/test.txt']) {
    $var = 'blah1.txt'
  } else {
    $var = 'blah2.txt'
  }

  File {$var : 
    ensure => file,
  }

  File<| title == '/etc/test.txt' |> -> Class['profile::a']
}

The only way that it works is if I explicitly include 'profile::b' before 
'profile::a' in base. 

class profile::base {
  include 'modules'
  include '::profile::b'
  include '::profile::a'
}

Or if I remove 'profile::a' from base and include them both in the role.

class role::test_server inherits ::role {
  include '::profile::b'
  include '::profile::a'
}


I have alternatives. I can set values in hiera to key off of or push out 
custom facts. Custom facts will not be there on the first run which is 
probably ok. I think we would run into a few issues here and there but I 
could make it work. I could set hiera vars and key off of those instead but 
with our hiera setup that would require duplicating a lot of code across 
every role.

Everything I have read says that chaining the resource should enforce the 
order but I am obviously missing something. Can someone see what I am doing 
wrong or explain why this will not work?

Thank you in advance.

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