Jira (PUP-3265) 4x functions in modules are broken

Andy Parker (JIRA) Wed, 17 Sep 2014 09:43:54 -0700

Title: Message Title

Andy Parker commented on an issue

Jose Sanchez, I'm not sure what exactly you are trying to do, but the way to load functions using the new loaders has changed significantly. Using the current way for the "3x" API (the Puppet::Parser::Functions.newfunction style) should still work, but new functions need to be loaded using the new Pops loaders. Unfortunately we haven't fully documented all of this, but you can trawl through the code and find https://github.com/puppetlabs/puppet/blob/stable/lib/puppet/parser/compiler.rb#L270 and https://github.com/puppetlabs/puppet/blob/stable/lib/puppet/pops/evaluator/runtime3_support.rb#L233-240.

Here is an example of loading and calling a new function:

                                                    require 'puppet'
require 'puppet/loaders'
require 'puppet/pops'
e = Puppet::Node::Environment.create(:testing, ['/Users/andy/.puppet/modules'])
l = Puppet::Pops::Loaders.new(e)
f = l.private_environment_loader.load(:function, 'func::my_func')
f.call(nil, 'hi')

                                                

The function is in /Users/andy/.puppet/modules/func/lib/puppet/functions/func/my_func.rb and contains

                                                    Puppet::Functions.create_function("func::my_func") do
  def my_func(msg)
    msg
  end
end

                                                

Some of the code that I show for setting up to call the function might change in puppet 4. The loader structure is still a bit in development and so the files for the require statements might move around. I think the code will likely stay as I have showed it, however.

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Puppet /

PUP-3265

Commit 0447ea02 changed the function path for 4x functions:

{code}
- FUNCTION_PATH_4X = File.join('lib', 'puppet', 'functions')
+ FUNCTION_PATH_4X = File.join('puppet', 'functions')
{code}

Now it's not possible to load 4x functions from modules as the loader returns a path such as: <module dir>/lib/puppet/functions, even for 4x functions.
...

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Jira (PUP-3265) 4x functions in modules are broken

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