67 lines
2.1 KiB
Python
67 lines
2.1 KiB
Python
"""ADK agent with vector search RAG tool."""
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from functools import partial
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from google import genai
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from google.adk.agents.llm_agent import Agent
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from google.adk.runners import Runner
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from google.adk.tools.mcp_tool import McpToolset
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from google.adk.tools.mcp_tool.mcp_session_manager import StreamableHTTPConnectionParams
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from google.cloud.firestore_v1.async_client import AsyncClient
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from google.genai.types import Content, Part
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from va_agent.auth import auth_headers_provider
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from va_agent.config import settings
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from va_agent.dynamic_instruction import provide_dynamic_instruction
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from va_agent.governance import GovernancePlugin
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from va_agent.notifications import FirestoreNotificationBackend
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from va_agent.session import FirestoreSessionService
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# MCP Toolset for RAG knowledge search
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toolset = McpToolset(
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connection_params=StreamableHTTPConnectionParams(url=settings.mcp_remote_url),
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header_provider=auth_headers_provider,
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)
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# Shared Firestore client for session service and notifications
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firestore_db = AsyncClient(database=settings.firestore_db)
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# Session service with compaction
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session_service = FirestoreSessionService(
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db=firestore_db,
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compaction_token_threshold=10_000,
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genai_client=genai.Client(),
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)
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# Notification service
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notification_service = FirestoreNotificationBackend(
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db=firestore_db,
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collection_path=settings.notifications_collection_path,
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max_to_notify=settings.notifications_max_to_notify,
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window_hours=settings.notifications_window_hours,
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)
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# Agent with static and dynamic instructions
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governance = GovernancePlugin()
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agent = Agent(
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model=settings.agent_model,
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name=settings.agent_name,
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instruction=partial(provide_dynamic_instruction, notification_service),
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static_instruction=Content(
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role="user",
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parts=[Part(text=settings.agent_instructions)],
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),
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tools=[toolset],
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before_model_callback=governance.before_model_callback,
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after_model_callback=governance.after_model_callback,
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)
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# Runner
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runner = Runner(
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app_name="va_agent",
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agent=agent,
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session_service=session_service,
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auto_create_session=True,
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)
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