puppetlabs-apache

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Describe the Bug

I am trying to set a header for a vhost I am declaring with hiera. The header is: Header add Set-Cookie "ROUTEID=.%{BALANCER_WORKER_ROUTE}e; path=/" env=BALANCER_ROUTE_CHANGED To achieve this, I put the following into the hiera:

apache::vhosts:
  'url-com-ssl':
    servername: 'url.com'
    headers:
      - "add Set-Cookie \"ROUTEID=.%{BALANCER_WORKER_ROUTE}e; path=/\" env=BALANCER_ROUTE_CHANGED"

This results in: Header add Set-Cookie "ROUTEID=.e; path=/" env=BALANCER_ROUTE_CHANGED

It seems that the module/template interpolates the variable in the single quoted string resulting in an empty substring. This would make it hard/impossible to use the environment variables functionalities of apache.

I tried several different ways to escape the %{BALANCER_WORKER_ROUTE} part, but had no success. Maybe there is a way I am not aware of? Help is much appreciated.

Expected Behavior

I expected the apache module to set the header correctly without interpolating the string before writing it into the file.

Steps to Reproduce

1. Setup the apache-module on the puppetmaster with hiera as described above
2. Run the agent
3. View the resulting output file

Environment

• Module-Version 8.2.0
• Platform SLES 12-SP5 (both master and agent)
• Puppetversion 6.28.0
• Puppetserver Version 6.20.0

Additional Context

If there is a way to correctly escape or configure variables in headers, it is not really apparent from the docs. Maybe there needs to be a bit more documentation, if this is not a bug?