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Shangjie Chen
72 lines
2.2 KiB
Python
72 lines
2.2 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 google.adk import Agent
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from google.adk.tools.tool_context import ToolContext
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from google.genai import types
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async def update_state(tool_context: ToolContext, key: str, value: str) -> dict:
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"""Updates a state value."""
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tool_context.state[key] = value
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return {"status": f"Updated state '{key}' to '{value}'"}
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async def load_state(tool_context: ToolContext, key: str) -> dict:
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"""Loads a state value."""
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return {key: tool_context.state.get(key)}
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async def save_artifact(
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tool_context: ToolContext, filename: str, content: str
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) -> dict:
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"""Saves an artifact with the given filename and content."""
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artifact_bytes = content.encode("utf-8")
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artifact_part = types.Part(
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inline_data=types.Blob(mime_type="text/plain", data=artifact_bytes)
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)
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version = await tool_context.save_artifact(filename, artifact_part)
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return {"status": "success", "filename": filename, "version": version}
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async def load_artifact(tool_context: ToolContext, filename: str) -> dict:
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"""Loads an artifact with the given filename."""
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artifact = await tool_context.load_artifact(filename)
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if not artifact:
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return {"error": f"Artifact '{filename}' not found"}
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content = artifact.inline_data.data.decode("utf-8")
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return {"filename": filename, "content": content}
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# Create the agent
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root_agent = Agent(
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name="state_agent",
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model="gemini-2.0-flash",
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instruction="""You are an agent that manages state and artifacts.
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You can:
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- Update state value
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- Load state value
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- Save artifact
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- Load artifact
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Use the appropriate tool based on what the user asks for.""",
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tools=[
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update_state,
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load_state,
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save_artifact,
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load_artifact,
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],
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)
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