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https://github.com/EvolutionAPI/adk-python.git
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21736067f9
Previously, callbacks were treated as purely synchronous, so passing an async coroutine caused “was never awaited” errors and Pydantic serialization failures. Now we detect awaitable return values from before_tool_callback and after_tool_callback, and `await` them if necessary. Fixes: #380
108 lines
3.3 KiB
Python
108 lines
3.3 KiB
Python
# Copyright 2025 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from typing import Any, Dict, Optional
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import pytest
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from google.adk.agents import Agent
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from google.adk.tools.function_tool import FunctionTool
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from google.adk.tools.tool_context import ToolContext
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from google.adk.flows.llm_flows.functions import handle_function_calls_async
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from google.adk.events.event import Event
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from google.genai import types
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from ... import utils
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class AsyncBeforeToolCallback:
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def __init__(self, mock_response: Dict[str, Any]):
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self.mock_response = mock_response
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async def __call__(
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self,
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tool: FunctionTool,
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args: Dict[str, Any],
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tool_context: ToolContext,
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) -> Optional[Dict[str, Any]]:
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return self.mock_response
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class AsyncAfterToolCallback:
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def __init__(self, mock_response: Dict[str, Any]):
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self.mock_response = mock_response
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async def __call__(
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self,
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tool: FunctionTool,
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args: Dict[str, Any],
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tool_context: ToolContext,
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tool_response: Dict[str, Any],
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) -> Optional[Dict[str, Any]]:
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return self.mock_response
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async def invoke_tool_with_callbacks(
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before_cb=None, after_cb=None
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) -> Optional[Event]:
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def simple_fn(**kwargs) -> Dict[str, Any]:
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return {"initial": "response"}
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tool = FunctionTool(simple_fn)
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model = utils.MockModel.create(responses=[])
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agent = Agent(
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name="agent",
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model=model,
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tools=[tool],
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before_tool_callback=before_cb,
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after_tool_callback=after_cb,
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)
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invocation_context = utils.create_invocation_context(
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agent=agent, user_content=""
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)
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# Build function call event
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function_call = types.FunctionCall(name=tool.name, args={})
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content = types.Content(parts=[types.Part(function_call=function_call)])
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event = Event(
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invocation_id=invocation_context.invocation_id,
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author=agent.name,
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content=content,
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)
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tools_dict = {tool.name: tool}
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return await handle_function_calls_async(
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invocation_context,
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event,
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tools_dict,
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)
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@pytest.mark.asyncio
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async def test_async_before_tool_callback():
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mock_resp = {"test": "before_tool_callback"}
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before_cb = AsyncBeforeToolCallback(mock_resp)
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result_event = await invoke_tool_with_callbacks(before_cb=before_cb)
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assert result_event is not None
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part = result_event.content.parts[0]
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assert part.function_response.response == mock_resp
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@pytest.mark.asyncio
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async def test_async_after_tool_callback():
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mock_resp = {"test": "after_tool_callback"}
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after_cb = AsyncAfterToolCallback(mock_resp)
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result_event = await invoke_tool_with_callbacks(after_cb=after_cb)
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assert result_event is not None
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part = result_event.content.parts[0]
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assert part.function_response.response == mock_resp
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