I am trying to write a recipe which (among other things) checks a if a data bag item is present. In a nutshell it's a data bag for storing properties of each host, and each host should have an item in this data bag. If they do not, I need the host to create a new data bag item.
I've tried different variations on the data_bag and data_bag_item helpers, ie.
if !data_bag_item('host_properties', node['hostname']) if data_bag_item('host_properties', node['hostname']).nil? hp = data_bag('host_properties) me = hp[node['hostname']]
But with that, chef-client always fails at compile time with a 404 any time the item doesn't exist, so it never even gets to the point of actually running the recipe.
I dug in to the Chef::DataBagItem class - there is a validate_id! method but it requires an "id_str" parameter, but it's not clear what id_str is, exactly. Running the .new() method does create a new data bag item, but also overwrites the data bag if it already exists.
Am I going about this the wrong way? I'm new-ish to Chef (less than a year) so maybe there's a better, more standard way of doing this?