Rename ModelActivity to ModelInvoker

Author: AnatoliB

samples-v2/openai_agents/_invoke_model_activity.py

@@ -206,11 +206,7 @@ def from_json(cls, json_str: str) -> 'ActivityModelInput':
         return cls(**data)
 
 
-class ModelActivity:
-    """Class wrapper for model invocation activities to allow model customization. By default, we use an OpenAIProvider with retries disabled.
-    Disabling retries in your model of choice is recommended to allow activity retries to define the retry model.
-    """
-
+class ModelInvoker:
     def __init__(self, model_provider: Optional[ModelProvider] = None):
         """Initialize the activity with a model provider."""
         self._model_provider = model_provider or OpenAIProvider(

samples-v2/openai_agents/function_app.py

@@ -61,14 +61,14 @@ def basic_hello_world_orchestrator(context):
 
 @app.activity_trigger(input_name="input")
 async def invoke_model_activity(input: str):
-    from _invoke_model_activity import ModelActivity, ActivityModelInput
+    from _invoke_model_activity import ModelInvoker, ActivityModelInput
     from pydantic_core import to_json
 
     # Deserialize input string into ActivityModelInput object
     activity_input = ActivityModelInput.from_json(input)
 
-    model_activity = ModelActivity()
-    result = await model_activity.invoke_model_activity(activity_input)
+    model_invoker = ModelInvoker()
+    result = await model_invoker.invoke_model_activity(activity_input)
 
     json_obj = ModelResponse.__pydantic_serializer__.to_json(result)
     return json_obj.decode()