wehub-resource-sync
114 lines
3.8 KiB
Python
114 lines
3.8 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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# https://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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import logging
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import os
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import click
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from a2a.server.apps import A2AStarletteApplication
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from a2a.server.request_handlers import DefaultRequestHandler
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from a2a.server.tasks import InMemoryTaskStore
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from a2a.types import AgentCapabilities, AgentCard, AgentSkill
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from a2ui.a2ui_extension import get_a2ui_agent_extension
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from agent import RestaurantAgent
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from agent_executor import RestaurantAgentExecutor
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from dotenv import load_dotenv
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from starlette.middleware.cors import CORSMiddleware
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from starlette.staticfiles import StaticFiles
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load_dotenv()
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logging.basicConfig(level=logging.INFO)
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logger = logging.getLogger(__name__)
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class MissingAPIKeyError(Exception):
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"""Exception for missing API key."""
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@click.command()
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@click.option("--host", default="localhost")
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@click.option("--port", default=10002)
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def main(host, port):
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try:
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# Check for API key only if Vertex AI is not configured
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if not os.getenv("GOOGLE_GENAI_USE_VERTEXAI") == "TRUE":
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if not os.getenv("GEMINI_API_KEY"):
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raise MissingAPIKeyError(
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"GEMINI_API_KEY environment variable not set and GOOGLE_GENAI_USE_VERTEXAI is not TRUE."
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)
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capabilities = AgentCapabilities(
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streaming=True,
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extensions=[get_a2ui_agent_extension()],
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)
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skill = AgentSkill(
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id="find_restaurants",
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name="Find Restaurants Tool",
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description="Helps find restaurants based on user criteria (e.g., cuisine, location).",
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tags=["restaurant", "finder"],
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examples=["Find me the top 10 chinese restaurants in the US"],
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)
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base_url = f"http://{host}:{port}"
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agent_card = AgentCard(
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name="Restaurant Agent",
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description="This agent helps find restaurants based on user criteria.",
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url=base_url, # <-- Use base_url here
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version="1.0.0",
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default_input_modes=RestaurantAgent.SUPPORTED_CONTENT_TYPES,
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default_output_modes=RestaurantAgent.SUPPORTED_CONTENT_TYPES,
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capabilities=capabilities,
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skills=[skill],
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)
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agent_executor = RestaurantAgentExecutor(base_url=base_url)
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request_handler = DefaultRequestHandler(
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agent_executor=agent_executor,
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task_store=InMemoryTaskStore(),
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)
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server = A2AStarletteApplication(
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agent_card=agent_card, http_handler=request_handler
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)
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import uvicorn
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app = server.build()
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app.add_middleware(
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CORSMiddleware,
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allow_origins=["http://localhost:5173"],
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allow_credentials=True,
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allow_methods=["*"],
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allow_headers=["*"],
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)
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# Use absolute path based on this script's location
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script_dir = os.path.dirname(os.path.abspath(__file__))
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images_dir = os.path.join(script_dir, "images")
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app.mount("/static", StaticFiles(directory=images_dir), name="static")
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uvicorn.run(app, host=host, port=port)
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except MissingAPIKeyError as e:
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logger.error(f"Error: {e}")
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exit(1)
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except Exception as e:
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logger.error(f"An error occurred during server startup: {e}")
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exit(1)
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if __name__ == "__main__":
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main()
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