Check if deferred bindings is enabled in base ext (#4)

* check if deferred bindings is enabled in base

* removed flag, send in registry

---------

Co-authored-by: Victoria Hall <victoria.hall@microsoft.com>

Author: hallvictoria

azure-functions-extension-base/azure/functions/extension/base/__init__.py

@@ -7,7 +7,8 @@
     _BaseConverter,
     InConverter,
     OutConverter,
-    get_binding_registry
+    get_binding_registry,
+    check_deferred_bindings_enabled
 )
 from .sdkType import SdkType
 from .web import (
@@ -28,6 +29,7 @@
     'OutConverter',
     'SdkType',
     'get_binding_registry',
+    'check_deferred_bindings_enabled',
     'ModuleTrackerMeta',
     'RequestTrackerMeta',
     'ResponseTrackerMeta',

azure-functions-extension-base/azure/functions/extension/base/meta.py

@@ -182,3 +182,8 @@ def encode(cls, obj: Any, *,
 
 def get_binding_registry():
     return _ConverterMeta
+
+
+def check_deferred_bindings_enabled(cls, sdk_binding_registry: _ConverterMeta, pytype: type) -> bool:
+    return (sdk_binding_registry is not None
+            and _ConverterMeta.check_supported_type(pytype))