I'm having a difficult time with a custom function:
module Puppet::Parser::Functions
newfunction(:subpaths, :type => :rvalue) do |args|
result = []
args.flatten.each do |path|
temp_path = path
begin
result << temp_path
temp_path = File.dirname(temp_path)
end while (temp_path != "/" and temp_path != ".")
end
return result.uniq
end
end
If I try calling this in a Puppet manifest:
class testing {
subpaths("/usr/local/bin")
subpaths("/usr/local/bin", "/var/log/foo")
subpaths(["/usr/local/bin","/var/log/foo"])
}
and I get that to run on a host, with no other classes called, I get an
error
Error 400 on SERVER: can't convert Array into String
I tried changing my custom function to
module Puppet::Parser::Functions
newfunction(:subpaths, :type => :rvalue) do |args|
return ""
end
end
and it still does the same thing.
I see in the bug tracker that several times in the past the ability to pass
in arrays has been broken through inadvertent changes, but I see no recent
discussion on whether you _should_ be able to pass arrays in; in other
words, it could be an intentional design, in which case I can just try
something else.
However, when I browse the source code in
/usr/lib/ruby/site_ruby/1.8/puppet/parser/functions, I don't see any magic
in the functions that accept arrays, except that many seem to use .flatten
on the args array passed in.
I tried that in my initial attempt, and it seems that it fails before it
even gets to calling the custom function.
I've tried looking in the mailing lists and searching the web, but most
mentions of this seem to be for older pre-2.x versions of Puppet.
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