Deprecated Functions on Chef Server 12.6.0

[fquiroga]

Hi,
I found deprecated messages in the ouput running chef-client in my nodes:

Deprecated features used!
method access to node attributes (node.foo.bar) is deprecated and will be removed in Chef 13, please use bracket syntax (node["foo"]["bar"]) at 3 locations:
- /var/chef/cache/cookbooks/timezone-ii/recipes/linux-generic.rb:13:in from_file' - /var/chef/cache/cookbooks/timezone-ii/recipes/linux-generic.rb:14:in from_file'
- /var/chef/cache/cookbooks/timezone-ii/recipes/linux-generic.rb:24:in `from_file'
See https://docs.chef.io/deprecations_attributes.html for further details.

I've checked the url given and try to adapt the lines, (replacing for brackets) but no luck, even if the sintax is correct, when i run chef-client in the node, the message given is diferent :
Modified code:

timezone_data_file = File.join(node["timezone"]["tzdata_dir"], ["node.tz"])
localtime_path = node["timezone"]["localtime_path"]

ruby_block "confirm timezone" do
  block {
    unless File.exist?(timezone_data_file)
      raise "Can't find #{timezone_data_file}!"
    end
  }
end

if node["timezone"]["use_symlink"]
  link localtime_path do

He is the message after running chef-client in the node:

Recipe Compile Error in /var/chef/cache/cookbooks/base/recipes/default.rb

Errno::ENOENT

No such file or directory @ rb_sysopen - /usr/share/zoneinfo/node.tz

Cookbook Trace:

/var/chef/cache/cookbooks/timezone-ii/recipes/linux-generic.rb:34:in initialize' /var/chef/cache/cookbooks/timezone-ii/recipes/linux-generic.rb:34:in open'
/var/chef/cache/cookbooks/timezone-ii/recipes/linux-generic.rb:34:in block in from_file' /var/chef/cache/cookbooks/timezone-ii/recipes/linux-generic.rb:33:in from_file'
/var/chef/cache/cookbooks/timezone-ii/recipes/default.rb:34:in from_file' /var/chef/cache/cookbooks/base/recipes/default.rb:8:in from_file'

So the codes explodes somwhere else.

How can i help to make this recipe compatible with Chef 12.6 (and 13 release) ?
I'm not proficient in ruby but i'm a quick learner.

Thanks.
Regards.