class ChefCLI::PolicyfileServices::UpdateAttributes

def run
  assert_policy_and_lock_present!
  prepare_constraints
  if policyfile_compiler.default_attributes != policyfile_lock.default_attributes
    policyfile_lock.default_attributes = policyfile_compiler.default_attributes
    @updated = true
  end
  if policyfile_compiler.override_attributes != policyfile_lock.override_attributes
    policyfile_lock.override_attributes = policyfile_compiler.override_attributes
    @updated = true
  end
  if updated_lock?
    with_file(policyfile_lock_expanded_path) do |f|
      f.print(FFI_Yajl::Encoder.encode(policyfile_lock.to_lock, pretty: true ))
    end
    ui.msg("Updated attributes in #{policyfile_lock_expanded_path}")
  else
    ui.msg("Attributes already up to date")
  end
rescue => error
  raise PolicyfileUpdateError.new("Failed to update Policyfile lock", error)
end