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main.py
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# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import asyncio
from google.adk import Agent
from google.adk.runners import InMemoryRunner
from google.adk.tools.tool_context import ToolContext
from google.genai import types
# [Step 2] Import the plugin.
from .count_plugin import CountInvocationPlugin
async def hello_world(tool_context: ToolContext, query: str):
print(f'Hello world: query is [{query}]')
root_agent = Agent(
model='gemini-2.0-flash',
name='hello_world',
description='Prints hello world with user query.',
instruction="""Use hello_world tool to print hello world and user query.
""",
tools=[hello_world],
)
async def main():
"""Main entry point for the agent."""
prompt = 'hello world'
runner = InMemoryRunner(
agent=root_agent,
app_name='test_app_with_plugin',
# [Step 2] Add your plugin here. You can add multiple plugins.
plugins=[CountInvocationPlugin()],
)
session = await runner.session_service.create_session(
user_id='user',
app_name='test_app_with_plugin',
)
async for event in runner.run_async(
user_id='user',
session_id=session.id,
new_message=types.Content(
role='user', parts=[types.Part.from_text(text=prompt)]
),
):
print(f'** Got event from {event.author}')
if __name__ == '__main__':
asyncio.run(main())