chore: Filter out adk_request_input event from content list

Co-authored-by: Shangjie Chen <deanchen@google.com>
PiperOrigin-RevId: 859321034

Author: DeanChensj

src/google/adk/flows/llm_flows/contents.py

@@ -29,6 +29,7 @@
 from .functions import remove_client_function_call_id
 from .functions import REQUEST_CONFIRMATION_FUNCTION_CALL_NAME
 from .functions import REQUEST_EUC_FUNCTION_CALL_NAME
+from .functions import REQUEST_INPUT_FUNCTION_CALL_NAME
 
 logger = logging.getLogger('google_adk.' + __name__)
 
@@ -280,6 +281,7 @@ def _should_include_event_in_context(
       or _is_adk_framework_event(event)
       or _is_auth_event(event)
       or _is_request_confirmation_event(event)
+      or _is_request_input_event(event)
   )
 
 
@@ -675,6 +677,11 @@ def _is_adk_framework_event(event: Event) -> bool:
   return _is_function_call_event(event, 'adk_framework')
 
 
+def _is_request_input_event(event: Event) -> bool:
+  """Checks if the event is a request input event."""
+  return _is_function_call_event(event, REQUEST_INPUT_FUNCTION_CALL_NAME)
+
+
 def _is_live_model_audio_event_with_inline_data(event: Event) -> bool:
   """Check if the event is a live/bidi audio event with inline data.
 

src/google/adk/flows/llm_flows/functions.py

@@ -49,6 +49,7 @@
 AF_FUNCTION_CALL_ID_PREFIX = 'adk-'
 REQUEST_EUC_FUNCTION_CALL_NAME = 'adk_request_credential'
 REQUEST_CONFIRMATION_FUNCTION_CALL_NAME = 'adk_request_confirmation'
+REQUEST_INPUT_FUNCTION_CALL_NAME = 'adk_request_input'
 
 logger = logging.getLogger('google_adk.' + __name__)