I’ve written a provider and have a method to expand some data. However, even after I clone it, it still errors:
316 # Expand an array of hashes whose values may contain arrays into an array of hashes of strings
317 # This returns empty if an invalid data structure is given. the array within the hash must only contain strings.
318 # Expand [{'a' => 'aaa', 'b' => ['bbb', 'ccc'],...},...]
319 # Into [{'a' => 'aaa', 'b' => 'bbb'}, {'a' => 'aaa', 'b' => 'ccc'}]
320 def expand_rules(ruleset)
321 return unless ruleset.is_a?(Array)
322 rules = ruleset.clone
323 rules.each do |rule|
324 rule.each do |key,value|
325 if value.is_a?(Array)
326 value.each do |inel|
327 return unless inel.is_a?(String)
328 temp = rule.clone
329 temp[key] = inel
330 rules.push(temp)
331 end
332 break
333 end
334 end
335 end
336 # Remove temporary and oroginal data that should have been expanded
337 rules.reject{|rule| rule.any? {|key,value| value.is_a?(Array)}}
338 end
Which results in this stack trace:
Chef::Exceptions::ImmutableAttributeModification
------------------------------------------------
Node attributes are read-only when you do not specify which precedence level to set. To set an attribute use code like `node.default["key"] = "value"'
Cookbook Trace:
---------------
/var/chef/cache/cookbooks/icam_ipt/libraries/ipt_save.rb:328:in `initialize_clone'
/var/chef/cache/cookbooks/icam_ipt/libraries/ipt_save.rb:328:in `clone'
/var/chef/cache/cookbooks/icam_ipt/libraries/ipt_save.rb:328:in `block (3 levels) in expand_rules'
/var/chef/cache/cookbooks/icam_ipt/libraries/ipt_save.rb:326:in `each'
/var/chef/cache/cookbooks/icam_ipt/libraries/ipt_save.rb:326:in `block (2 levels) in expand_rules'
/var/chef/cache/cookbooks/icam_ipt/libraries/ipt_save.rb:324:in `each'
/var/chef/cache/cookbooks/icam_ipt/libraries/ipt_save.rb:324:in `block in expand_rules'
/var/chef/cache/cookbooks/icam_ipt/libraries/ipt_save.rb:323:in `each'
/var/chef/cache/cookbooks/icam_ipt/libraries/ipt_save.rb:323:in `expand_rules'
/var/chef/cache/cookbooks/icam_ipt/libraries/ipt_save.rb:245:in `insert_rules'
/var/chef/cache/cookbooks/icam_ipt/libraries/ipt_save.rb:219:in `block in action_compile'
/var/chef/cache/cookbooks/icam_ipt/libraries/ipt_save.rb:185:in `each'
/var/chef/cache/cookbooks/icam_ipt/libraries/ipt_save.rb:185:in `action_compile'
/var/chef/cache/cookbooks/icam_ipt/libraries/ipt_save.rb:113:in `action_all'
I found this, but I’m wondering if there’s a better way to accomplish this: