# source for StandaloneApplication class: # http://docs.gunicorn.org/en/stable/custom.html import os from typing import Dict, Optional import gunicorn.app.base from flask import Flask from flask_migrate import upgrade from fittrackee import create_app HOST = os.getenv('HOST', '0.0.0.0') PORT = os.getenv('PORT', '5000') WORKERS = os.getenv('APP_WORKERS', 1) BASEDIR = os.path.abspath(os.path.dirname(__file__)) app = create_app() class StandaloneApplication(gunicorn.app.base.BaseApplication): def __init__( self, current_app: Flask, options: Optional[Dict] = None ) -> None: self.options = options or {} self.application = current_app super().__init__() def load_config(self) -> None: config = { key: value for key, value in self.options.items() if key in self.cfg.settings and value is not None } for key, value in config.items(): self.cfg.set(key.lower(), value) def load(self) -> Flask: return self.application def upgrade_db() -> None: with app.app_context(): upgrade(directory=BASEDIR + '/migrations') def main() -> None: options = {'bind': f'{HOST}:{PORT}', 'workers': WORKERS} StandaloneApplication(app, options).run() if __name__ == '__main__': app.run()