lib/cloudstrap/config.rb in cloudstrap-0.34.1.pre vs lib/cloudstrap/config.rb in cloudstrap-0.34.5.pre

@@ -89,18 +89,40 @@
 
     alias hdp_package_url hdp_bootstrap_package_url
 
     Contract None => String
     def properties_seed_url
-      lookup :properties_seed_url
+      required :properties_seed_url
     end
 
     Contract None => String
     def bootstrap_properties_seed_url
       properties_seed_url
     end
 
     private
+
+    Contract None => ::Pastel::Delegator
+    def pastel
+      @pastel ||= Pastel.new
+    end
+
+    Contract RespondTo[:to_s] => nil
+    def abort_on_missing(key)
+      STDERR.puts pastel.red <<EOS
+
+#{pastel.bold key} is required, but is not configured.
+
+You can resolve this by adding it to #{pastel.bold file}, or by
+setting #{pastel.bold('BOOTSTRAP_' + key.to_s.upcase)} in the environment.
+EOS
+      abort
+    end
+
+    Contract RespondTo[:to_s] => String
+    def required(key)
+      lookup(key, '').tap { |value| abort_on_missing key if value.empty? }
+    end
 
     StringToString = Func[Maybe[String] => Maybe[String]]
 
     Contract RespondTo[:to_s], Maybe[Or[String, StringToString]] => Maybe[String]
     def memoize(key, value = nil)