Puppet users - Jun 2013 - Calling Defined types from classes

I am using a defined type so that I can have an array and have the defined 
type generate a file based on each member of the array. However In the erb 
file I also have values that i want set specific to that file that is 
generated.  

When i call the defined type how do i pass in the values that i want used 
for that file from my class.


Example

# MY class

class test (
   $my_files     = hiera_array (''my_files'',
[''test'',''test1'']),
) {
    createFiles { $my_files: }
}

# My Defined type
define createFiles (
){
   file { "/tmp/${name}":
       template => "/etc/puppet/modules/test/template/test.erb"
   } 
}

## My erb file

<% @proxy_realms.each do | realm | -%>
realm <% realm %> {
    pool = <%=  @name %>-pool
    nostrip
}
<% end -%>

# here is my problem - In my ERB file each realm will be different for each 
file generated. How can I call my defined type, generate a new file for 
each type and have a array get generated based on the settings for that file
I tied creating a array called realm in the class definition but then each 
file that got generated had the values for that array.

-- 
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to puppet-users+unsubscribe@googlegroups.com.
To post to this group, send email to puppet-users@googlegroups.com.
Visit this group at http://groups.google.com/group/puppet-users?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.

On Thursday, June 6, 2013 1:41:55 PM UTC-5, Johnny Costello
wrote:
>
> I am using a defined type so that I can have an array and have the defined 
> type generate a file based on each member of the array.


That''s a functional view of it, at least, but it is usually more
helpful
look at Puppet manifests from the perspective of modeling the target 
configuration.  From that perspective, the situation is something like: 
"I''m using a defined type to manage several related files with
content
derived from the same template".

Don''t get me wrong: this is not about you communicate the problem to
us; it
is about how you think about it yourself.  I hope to help you become a 
better puppeteer by adopting a mindset more congruent with Puppet''s
natural
paradigm.

 
> However In the erb file I also have values that i want set specific to 
> that file that is generated.  
>
> When i call the defined type how do i pass in the values that i want used 
> for that file from my class.
>
>
If you are using an array of resource titles to declare all the wanted 
resources, then you don''t get to pass different parameters to different
instances.  The instances can still be customized, however, by making the 
defined type select the appropriate values from some shared data structure 
or service, using the automatic $title (or $name) variable as a key.  The 
shared data might take the form of a hash-valued class variable, it might 
reside in hiera, or it might manifest some other way.  For example:

class test {
  $my_files = [''test'',''test1'']
  $realms = {
    ''test'' => [ ''realm1'',
''realm2'' ],
    ''test1'' => [ ''realm3'',
''realm4'' ]
  }
  test::proxy_realm_file { $my_files: }
}

define test::proxy_realm_file () {
  $proxy_realms = $test::realms[${title}]
  file { "/tmp/${title}":
    ensure => ''file'',
    content => template("test/test.erb")
  } 
}

For real-world use you would probably want to externalize the data (via 
hiera, for instance); I omit that from the example to focus on the 
technique I am demonstrating.

There are several other ways to approach this, some of them quite 
different.  For example, if you restructure your defined type a bit, you 
could use the create_resources() function to declare all the wanted 
instances based on a hash of instance titles and parameters.


John

-- 
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to puppet-users+unsubscribe@googlegroups.com.
To post to this group, send email to puppet-users@googlegroups.com.
Visit this group at http://groups.google.com/group/puppet-users?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.