Concatinating hashes

[Michael Wörz]

Hello,

given the following datastructure i want to create a resolv.conf file

dns:

    nameservers:
         '3': 10.200.1.230
         '4': 10.200.1.231
          .......
    search:
         cust0: a41mgt.local all-for-one.local
         cust1: A4T.local
         ......

for the nameserver list it is easy to itaerate over the list calling a defined type with a concat resource. 

the search list gives me  headache because i need to concatinate a string from it. 
              a41mgt.local all-for-one.local A4T.local ...

any ideas ? 

Thanks

[Stephen Marlow]

 You could likely use iteration in the future parser or recursion to build up the string, but what sits in my mind as the path of least resistance is inline templating (c.f. https://docs.puppetlabs.com/references/latest/function.html#inlinetemplate).

I ran a quick test along these lines and it appeared to produce appropriate output:

  $search = {

    'cust0' => 'a41mgt.local all-for-one.local',

    'cust1' => 'A4T.local',

    'cust2' => 'a4y.remote',

  }

  notify { "ILT Search: ${search}": }

  $string = inline_template("<%= @search.values.join(' ') %>")

  notify { "ILT String: ${string}": }

  Notice: ILT Search: cust2a4y.remotecust1A4T.localcust0a41mgt.local all-for-one.local

  Notice: ILT String: a4y.remote A4T.local a41mgt.local all-for-one.local

This can definitely be improved upon, but it seems to do the trick.

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[Stephen Marlow]

Yknow, completely disregard the above answer :p

I was looking at stdlib and completely forgot about it before playing with inline templating.

values and join in stdlib (https://github.com/puppetlabs/puppetlabs-stdlib) do what is needed here. Much less code smell that way :p

[Michael Wörz]

Thanks a lot. i will try this on monday

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[Michael Wörz]

I now mannaged to create the file accourately using the concat ressource. sort() also did the job.