Created
December 5, 2025 09:42
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Task 3.5: Call the agent upon user input
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| # This is a utility module for ADK data structures | |
| from google.genai import types | |
| # This function needs to be **asynchronous** (`async def`), | |
| # as we need to **await** the responses to be produced. | |
| async def validate_input(user_input: str): | |
| try: | |
| print(f'validating input: {user_input}') | |
| # `run_async` will return an asynchronous Generator, | |
| # which may produce various responses (stream) | |
| # Therefore, we must use an `async for ... in ...` loop | |
| # to correctly process the streamed output. | |
| async for event in validation_agent_runner.run_async( | |
| user_id=user_id, | |
| session_id=validation_session.id, # Get the unique ID for the current session | |
| new_message=types.Content(role='user', parts=[types.Part(text=user_input)]) # Format the user's input into the required structure | |
| ): | |
| # Check if the current streamed event contains the final response from the Agent | |
| if event.is_final_response(): | |
| print(f'validation result: {event.content.parts[0].text}') | |
| # Parse the final text (which is a JSON string) into a Python dictionary | |
| return json.loads(event.content.parts[0].text) | |
| except Exception as e: | |
| display(f"Error during validation: {e}") | |
| return None |
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