How do you call a custom function from another module?

[KomodoDave]

I have a utils module that contains common utilities. Most are defined types.

However, I've just added the first custom function in utils/lib/puppet/parser/functions/basename.rb .

It seems this cannot be referenced in the intuitive fashion from another module, namely:

  utils::basename(args)

Is it possible to call a custom function from another module? If so, what is the syntax? If not, is there a workaround besides copying the custom function to the referencing module?

Sincere thanks,

David

[KomodoDave]

Ah, I've got it: simply include the module then call the function unqualified:

include utils

# ...

basename(args)

David

[KomodoDave]

Hmm.. actually there's still something amiss.

Doing the include as described above changed the error from:

Error 400 on SERVER: Unknown function utils::basename

to:

Error 400 on SERVER: Function 'basename' does not return a value

..which made me think it was now being found.

I then fixed the bug by adding to basename definition the required :type => :rvalue .

However, instead of solving the issue I now see the message:

Error 400 on SERVER: undefined method `basename'

Any suggestions would be most welcome at this point!

Thank you.

David

[KomodoDave]

I fixed the problem by prefixing the one-line definition of basename with a return.

Should I infer Puppet doesn't support the standard Ruby mechanism of returning the last evaluated result within a function?

I did have:

module Puppet::Parser::Functions

    newfunction(:basename, :type => :rvalue) do |args|

        File.basename(*args)

    end

end

..which resulted in:

err: Could not retrieve catalog from remote server: Error 400 on SERVER: undefined method `basename'

I now have:

module Puppet::Parser::Functions

    newfunction(:basename, :type => :rvalue) do |args|

        return File.basename(*args)

    end

end

..which works like a charm.

Cheers,

David