Artifact/File Upload example not clear

[QAInsights]

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Describe the bug
Artifact/File Upload example not clear

To Reproduce
Steps to reproduce the behavior:

1. Follow the artifact/file upload example

Expected behavior
File should get uploaded/read by agent.

Screenshots
NA

Desktop (please complete the following information):

• OS: Windows
• Python version(python -V): 3.12.8
• ADK version(pip show google-adk): 0.1.0

Additional context

Failed to parse the parameter context: google.adk.agents.callback_context.CallbackContext of function on_file_upload for automatic function calling.Automatic function calling works best with simpler function signature schema,consider manually parse your function declaration for function on_file_upload.

[boyangsvl]

Could you provide a full stack trace?

[QAInsights]

@boyangsvl

ERROR - fast_api.py:616 - Error in event_generator: Failed to parse the parameter context: google.adk.agents.callback_context.CallbackContext of function save_generated_report for automatic function calling.Automatic function calling works best with simpler function signature schema,consider manually parse your function declaration for function save_generated_report.
Traceback (most recent call last):
  File "/Users/naveenkumar/Gits/perf_tools_google_agent/.venv/lib/python3.12/site-packages/google/adk/cli/fast_api.py", line 605, in event_generator
    async for event in runner.run_async(
  File "/Users/naveenkumar/Gits/perf_tools_google_agent/.venv/lib/python3.12/site-packages/google/adk/runners.py", line 197, in run_async
    async for event in invocation_context.agent.run_async(invocation_context):
  File "/Users/naveenkumar/Gits/perf_tools_google_agent/.venv/lib/python3.12/site-packages/google/adk/agents/base_agent.py", line 141, in run_async
    async for event in self._run_async_impl(ctx):
  File "/Users/naveenkumar/Gits/perf_tools_google_agent/.venv/lib/python3.12/site-packages/google/adk/agents/llm_agent.py", line 232, in _run_async_impl
    async for event in self._llm_flow.run_async(ctx):
  File "/Users/naveenkumar/Gits/perf_tools_google_agent/.venv/lib/python3.12/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 231, in run_async
    async for event in self._run_one_step_async(invocation_context):
  File "/Users/naveenkumar/Gits/perf_tools_google_agent/.venv/lib/python3.12/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 245, in _run_one_step_async
    async for event in self._preprocess_async(invocation_context, llm_request):
  File "/Users/naveenkumar/Gits/perf_tools_google_agent/.venv/lib/python3.12/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 283, in _preprocess_async
    await tool.process_llm_request(
  File "/Users/naveenkumar/Gits/perf_tools_google_agent/.venv/lib/python3.12/site-packages/google/adk/tools/base_tool.py", line 96, in process_llm_request
    if (function_declaration := self._get_declaration()) is None:
                                ^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/naveenkumar/Gits/perf_tools_google_agent/.venv/lib/python3.12/site-packages/google/adk/tools/function_tool.py", line 42, in _get_declaration
    build_function_declaration(
  File "/Users/naveenkumar/Gits/perf_tools_google_agent/.venv/lib/python3.12/site-packages/google/adk/tools/_automatic_function_calling_util.py", line 232, in build_function_declaration
    from_function_with_options(func, variant)
  File "/Users/naveenkumar/Gits/perf_tools_google_agent/.venv/lib/python3.12/site-packages/google/adk/tools/_automatic_function_calling_util.py", line 309, in from_function_with_options
    schema = function_parameter_parse_util._parse_schema_from_parameter(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/naveenkumar/Gits/perf_tools_google_agent/.venv/lib/python3.12/site-packages/google/adk/tools/function_parameter_parse_util.py", line 292, in _parse_schema_from_parameter
    raise ValueError(
ValueError: Failed to parse the parameter context: google.adk.agents.callback_context.CallbackContext of function save_generated_report for automatic function calling.Automatic function calling works best with simpler function signature schema,consider manually parse your function declaration for function save_generated_report.

[hangfei]

Could you retry if this is fixed in latest wheel? @QAInsights

[dominicdev]

how to upload file for artifact? example if none web

[DeanChensj]

@dominicdev you can find example code in https://google.github.io/adk-docs/artifacts/#what-are-artifacts

[saeed-git-123]

Could you provide a full stack trace?

Hello, Is there any solution for this??
Have you found a way to upload a file via the ADK web UI, save it as an artifact, and then load it for use in subsequent functions?"