haystack/rest_api/application.py
Sara Zan 9dc89d2bd2
Fix dependency related build issues in Dockerfiles (#2135)
* Fix a path issue in Dockerfile-GPU

* Fix paths in Dockerfile-GPU

* Add workflow_dispatch to docker build task

* Remove reference to optional component from ui/, not needed anymore

* Move pytorch installation last to avoid replacing it later

* Remove optional import from rest_api too, no more needed

* Change path in ui/Dockerfile

* ui container works again

* Complete review of import paths

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
2022-02-09 17:35:18 +01:00

77 lines
2.7 KiB
Python

import logging
logging.basicConfig(format="%(asctime)s %(message)s", datefmt="%m/%d/%Y %I:%M:%S %p")
logger = logging.getLogger(__name__)
logging.getLogger("elasticsearch").setLevel(logging.WARNING)
logging.getLogger("haystack").setLevel(logging.INFO)
import uvicorn
from fastapi import FastAPI, HTTPException
from fastapi.routing import APIRoute
from fastapi.openapi.utils import get_openapi
from starlette.middleware.cors import CORSMiddleware
from rest_api.controller.errors.http_error import http_error_handler
from rest_api.config import ROOT_PATH
from rest_api.controller.router import router as api_router
def get_application() -> FastAPI:
application = FastAPI(title="Haystack-API", debug=True, version="1.0.0", root_path=ROOT_PATH)
# This middleware enables allow all cross-domain requests to the API from a browser. For production
# deployments, it could be made more restrictive.
application.add_middleware(
CORSMiddleware,
allow_origins=["*"],
allow_credentials=True,
allow_methods=["*"],
allow_headers=["*"],
)
application.add_exception_handler(HTTPException, http_error_handler)
application.include_router(api_router)
return application
def get_openapi_specs() -> dict:
"""
Used to autogenerate OpenAPI specs file to use in the documentation.
See `docs/_src/api/openapi/generate_openapi_specs.py`
"""
app = get_application()
return get_openapi(
title=app.title if app.title else None,
version=app.version if app.version else None,
openapi_version=app.openapi_version if app.openapi_version else None,
description=app.description if app.description else None,
routes=app.routes if app.routes else None,
)
def use_route_names_as_operation_ids(app: FastAPI) -> None:
"""
Simplify operation IDs so that generated API clients have simpler function
names (see https://fastapi.tiangolo.com/advanced/path-operation-advanced-configuration/#using-the-path-operation-function-name-as-the-operationid).
The operation IDs will be the same as the route names (i.e. the python method names of the endpoints)
Should be called only after all routes have been added.
"""
for route in app.routes:
if isinstance(route, APIRoute):
route.operation_id = route.name
app = get_application()
use_route_names_as_operation_ids(app)
logger.info("Open http://127.0.0.1:8000/docs to see Swagger API Documentation.")
logger.info(
"""
Or just try it out directly: curl --request POST --url 'http://127.0.0.1:8000/query' -H "Content-Type: application/json" --data '{"query": "Who is the father of Arya Stark?"}'
"""
)
if __name__ == "__main__":
uvicorn.run(app, host="0.0.0.0", port=8000)