Run chef_gem library methods lazily

ameir · January 19, 2016, 9:05pm

Hi All,

When chef_gems are used in a cookbook, is it possible to run the methods lazily?

For context, I’m working with the chef-consul cookbook, and node.first_service(name) appears to be run at compile-time, so it fails if consul is not already live and well on the host (the install is also handled by Chef).

If I comment out the block with node.first_service(name), Consul gets installed, and the cookbook runs fine thereafter with that block uncommented.

I understand I can wrap things in a ruby_block in my cookbook, but is there a way to defer that upstream?

Relevant method:

github.com

samdunne/chef-consul/blob/master/lib/chef/consul/node.rb#L33


    hash = keys.map { |key| "['#{key}']" }


    super <<-EOH
No attribute `node#{hash.join}' exists on
the current node. Specifically the `#{key}' attribute is not
defined. Please make sure you have spelled everything correctly.
EOH
  end
end


def first_service(name)
  ::Diplomat::Service.get(name)
end


def all_services(name)
  ::Diplomat::Service.get(name, :all)
end


def get_consul_key(key, recursive = false)
  ::Diplomat::Kv.get(key, recurse: recursive)
end

Thanks,
Ameir

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Run chef_gem library methods lazily

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