haystack/rest_api/application.py
Sara Zan a59bca3661
Apply black formatting (#2115)
* Testing black on ui/

* Applying black on docstores

* Add latest docstring and tutorial changes

* Create a single GH action for Black and docs to reduce commit noise to the minimum, slightly refactor the OpenAPI action too

* Remove comments

* Relax constraints on pydoc-markdown

* Split temporary black from the docs. Pydoc-markdown was obsolete and needs a separate PR to upgrade

* Fix a couple of bugs

* Add a type: ignore that was missing somehow

* Give path to black

* Apply Black

* Apply Black

* Relocate a couple of type: ignore

* Update documentation

* Make Linux CI run after applying Black

* Triggering Black

* Apply Black

* Remove dependency, does not work well

* Remove manually double trailing commas

* Update documentation

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
2022-02-03 13:43:18 +01:00

83 lines
2.9 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)
try:
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
except (ImportError, ModuleNotFoundError) as ie:
from haystack.utils.import_utils import _optional_component_not_installed
_optional_component_not_installed("rest_api", "rest", ie)
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)