Closes #10543: Introduce get_plugin_config() utility function

netbox/extras/plugins/__init__.py

@@ -1,6 +1,7 @@
 import collections
 
 from django.apps import AppConfig
+from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured
 from django.utils.module_loading import import_string
 from packaging import version
@@ -140,3 +141,23 @@ class PluginConfig(AppConfig):
         for setting, value in cls.default_settings.items():
             if setting not in user_config:
                 user_config[setting] = value
+
+
+#
+# Utilities
+#
+
+def get_plugin_config(plugin_name, parameter, default=None):
+    """
+    Return the value of the specified plugin configuration parameter.
+
+    Args:
+        plugin_name: The name of the plugin
+        parameter: The name of the configuration parameter
+        default: The value to return if the parameter is not defined (default: None)
+    """
+    try:
+        plugin_config = settings.PLUGINS_CONFIG[plugin_name]
+        return plugin_config.get(parameter, default)
+    except KeyError:
+        raise ImproperlyConfigured(f"Plugin {plugin_name} is not registered.")