add authentication

main.py

@@ -0,0 +1,89 @@
+#!/usr/bin/env python3
+
+"""
+Basebox microservices example app
+
+this defines an `app:app` module which is loaded from `main.py`
+or directly via `uvicorn app:app`.
+
+in the latter case configuration can only be passed 
+via OS environment or an env file (`--env-file`), not TOML.
+
+"""
+
+# stdlib imports
+from os import environ
+import argparse
+import logging
+
+# dependencies imports
+import coloredlogs
+import uvicorn
+
+# app imports
+import config
+import consts
+
+
+def setup_logging():
+    """
+    Configure logging from LOG_LEVEL environment variable, defaulting to DEBUG.
+    This intentionally does not use the config system to enable log messages
+    from config initialization.
+
+    Since logging is taken over by uvicorn, this will only be effective during initial startup.
+
+    :returns: the effective log level
+    """
+    level = environ.get('LOG_LEVEL', consts.DEFAULT_LOG_LEVEL)
+    logger = logging.getLogger(consts.LOG_ROOT)
+    coloredlogs.install(level=level, logger=logger)
+    return level
+
+
+def parse_args():
+    """
+    parse command line arguments
+    """
+    parser = argparse.ArgumentParser(
+        description='Basebox microservice example')
+    parser.add_argument('-c', '--config-file', type=str,
+                        help='config file')
+    return parser.parse_args()
+
+
+def main():
+    """
+    application entry point
+    """
+
+    # setup logging
+    log_level = setup_logging()
+
+    # load config
+    args = parse_args()
+    config.load(args.config_file)
+
+    # inject our application log root into uvicorn's own log config
+    #
+    # discussion:
+    # https://github.com/tiangolo/fastapi/discussions/7457
+    # https://github.com/encode/uvicorn/issues/491
+    log_config = uvicorn.config.LOGGING_CONFIG
+    log_config["loggers"][consts.LOG_ROOT] = {
+        "level": log_level.upper(),
+        "handlers": [
+            "default"
+        ],
+    }
+
+    # start server
+    uvicorn.run('app:app',
+                log_config=log_config,
+                port=config.int_val('SERVER_PORT'),
+                reload=config.bool_val(
+                    'SERVER_AUTORELOAD', 'False'))
+
+
+if __name__ == "__main__":
+    main()