add the ability to load definitions on start

README.md

@@ -61,7 +61,16 @@ By default, the guest user can only connect via localhost.  This is the behavior
 
 If you wish to allow the default guest user to connect remotely, you can change this to `[]`. If instead you wanted to allow just the user 'foo' to connect over loopback, you would set this value to `["foo"]`.  More information can be found here: https://www.rabbitmq.com/access-control.html.
 
+##### Load definitions
+The RabbitMQ Management Plugin provides a means to load predefined definitions for your installation. This feature allows for the application to consume a JSON file on startup to ensure that the configuration matches your exact specifications. This can be enabled by specifying the following attribute:
 
+`['rabbitmq']['management']['load_definitions'] = true`
+
+By default, the service will expect a JSON file to exist at `/etc/rabbitmq/load_definitions.json`; however, you can define another path if you'd prefer using the following attribute:
+
+`['rabbitmq']['management']['definitions_file'] = '/path/to/your/definitions.json'`
+
+In order to use this functionality, you will need to produce whatever file is defined by the above attribute with your definitions before you execute the RabbitMQ cookbook itself.
 
 ### mgmt_console
 Installs the `rabbitmq_management` and `rabbitmq_management_visualiser` plugins.

attributes/default.rb

@@ -132,6 +132,10 @@
 default['rabbitmq']['web_console_ssl'] = false
 default['rabbitmq']['web_console_ssl_port'] = 15_671
 
+# If configured to true, allows downstream cookbooks to supply definitions on start
+default['rabbitmq']['management']['load_definitions'] = false
+default['rabbitmq']['management']['definitions_file'] = '/etc/rabbitmq/load_definitions.json'
+
 # Change non SSL web console listen port
 default['rabbitmq']['web_console_port'] = 15672
 

templates/default/rabbitmq.config.erb

@@ -8,6 +8,10 @@
   ]},
 <% if node['rabbitmq']['web_console_ssl'] -%>
   {rabbitmq_management, [
+<% if node['rabbitmq']['management']['load_definitions'] %>
+    {load_definitions, "<%= node['rabbitmq']['management']['definitions_file'] %>"}
+    ]}
+<% end -%>
     {listener, [{port, <%= node['rabbitmq']['web_console_ssl_port'] %>},
 <% if node['rabbitmq']['web_console_interface'] -%>
                 {ip, "<%= node['rabbitmq']['web_console_interface'] %>"},