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"""The Quality-Control Web Application entry point"""
import os
import sys
import logging
from pathlib import Path
from flask import Flask, request
from flask_session import Session
from uploader.oauth2.client import user_logged_in, authserver_authorise_uri
from . import session
from .base_routes import base
from .species import speciesbp
from .oauth2.views import oauth2
from .expression_data import exprdatabp
from .errors import register_error_handlers
def override_settings_with_envvars(
app: Flask, ignore: tuple[str, ...]=tuple()) -> None:
"""Override settings in `app` with those in ENVVARS"""
for setting in (key for key in app.config if key not in ignore):
app.config[setting] = os.environ.get(setting) or app.config[setting]
def __log_gunicorn__(app: Flask) -> Flask:
"""Set up logging for the WSGI environment with GUnicorn"""
logger = logging.getLogger("gunicorn.error")
app.logger.handlers = logger.handlers
app.logger.setLevel(logger.level)
return app
def __log_dev__(app: Flask) -> Flask:
"""Set up logging for the development environment."""
stderr_handler = logging.StreamHandler(stream=sys.stderr)
app.logger.addHandler(stderr_handler)
root_logger = logging.getLogger()
root_logger.addHandler(stderr_handler)
root_logger.setLevel(app.config["LOG_LEVEL"])
return app
def setup_logging(app: Flask) -> Flask:
"""Set up logging for the application."""
software, *_version_and_comments = os.environ.get(
"SERVER_SOFTWARE", "").split('/')
return __log_gunicorn__(app) if bool(software) else __log_dev__(app)
def create_app():
"""The application factory"""
app = Flask(__name__)
app.config.from_pyfile(
Path(__file__).parent.joinpath("default_settings.py"))
if "UPLOADER_CONF" in os.environ:
app.config.from_envvar("UPLOADER_CONF") # Override defaults with instance path
override_settings_with_envvars(app, ignore=tuple())
secretsfile = app.config.get("UPLOADER_SECRETS", "").strip()
if bool(secretsfile):
secretsfile = Path(secretsfile).absolute()
app.config["UPLOADER_SECRETS"] = secretsfile
if secretsfile.exists():
# Silently ignore secrets if the file does not exist.
app.config.from_pyfile(secretsfile)
setup_logging(app)
# setup jinja2 symbols
app.add_template_global(lambda : request.url, name="request_url")
app.add_template_global(authserver_authorise_uri)
app.add_template_global(lambda: app.config["GN2_SERVER_URL"],
name="gn2server_uri")
app.add_template_global(user_logged_in)
app.add_template_global(lambda : session.user_details()["email"], name="user_email")
Session(app)
# setup blueprints
app.register_blueprint(base, url_prefix="/")
app.register_blueprint(oauth2, url_prefix="/oauth2")
app.register_blueprint(speciesbp, url_prefix="/species")
register_error_handlers(app)
return app
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