Module: Kitchen::Provisioner::ChefAliasLoader

Defined in:
lib/kitchen/provisioner/chef_alias_loader.rb

Overview

Helpers for the chef_* alias provisioners shipped by kitchen-cinc.

The chef_* names have a priority order across kitchen-* gems: kitchen-chef-enterprise > kitchen-cinc > kitchen-omnibus-chef. When a higher-priority gem is installed, our chef_* alias should yield to it rather than claim the constant. Users who explicitly want kitchen-cinc behavior should use the cinc_* names in kitchen.yml.

Class Method Summary collapse

Class Method Details

.defer_to_enterprise(const_name) ⇒ Boolean

If kitchen-chef-enterprise is installed, attempt to load its implementation of the named provisioner from its absolute path (bypasses $LOAD_PATH ambiguity). Returns true if enterprise’s version was loaded and now owns the constant; false otherwise, in which case the caller should register its own subclass.

Parameters:

  • const_name (Symbol) —

    the unqualified constant under Kitchen::Provisioner (e.g. :ChefInfra)

Returns:

  • (Boolean) 


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# File 'lib/kitchen/provisioner/chef_alias_loader.rb', line 39

def defer_to_enterprise(const_name)
  spec = enterprise_spec
  return false unless spec

  file_name = Kitchen::Util.snake_case(const_name.to_s)
  path = File.join(spec.gem_dir, "lib", "kitchen", "provisioner", "#{file_name}.rb")
  return false unless File.exist?(path)

  require path
  Kitchen::Provisioner.const_defined?(const_name, false)
end

.enterprise_spec ⇒ Object 



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# File 'lib/kitchen/provisioner/chef_alias_loader.rb', line 51

def enterprise_spec
  Gem::Specification.find_by_name("kitchen-chef-enterprise")
rescue Gem::LoadError
  nil
end