lib/lono/cfn/create.rb in lono-2.1.0 vs lib/lono/cfn/create.rb in lono-3.0.0

@@ -24,11 +24,36 @@
 
     template_body = IO.read(@template_path)
     cfn.create_stack(
       stack_name: @stack_name,
       template_body: template_body,
-      parameters: params#,
-      # capabilities: ["CAPABILITY_IAM"]
+      parameters: params,
+      capabilities: capabilities, # ["CAPABILITY_IAM", "CAPABILITY_NAMED_IAM"]
+      disable_rollback: !@options[:rollback],
     )
     puts message unless @options[:mute]
   end
+
+  # Appends a short random string at the end of a stack name.
+  # Later we will strip this same random string from the template name.
+  # Very makes it convenient.  We can just type:
+  #
+  #   lono cfn create main --randomize-stack-name
+  #
+  # instead of:
+  #
+  #   lono cfn create main-[RANDOM] --template main
+  #
+  # The randomize_stack_name can be specified at the CLI but can also be saved as a
+  # preference.
+  #
+  # It is not a default setting because it might confuse new lono users.
+  def randomize(stack_name)
+    if randomize_stack_name?
+      random = (0...3).map { (65 + rand(26)).chr }.join.downcase # Ex: jhx
+      [stack_name, random].join('-')
+    else
+      stack_name
+    end
+  end
+
 end