Adds db_location script.

src/cb2game/server/db_location.py

@@ -0,0 +1,44 @@
+"""Utility to locate the database file used by a CB2 instance.
+
+Run with:
+
+```
+python3 -m cb2game.server.db_location --config_filepath="path/to/config.yaml"
+```
+
+"""
+
+import logging
+import os
+import sys
+
+import fire
+
+from cb2game.server.config.config import Config, ReadConfigOrDie
+
+logger = logging.getLogger(__name__)
+
+
+def main(config_filepath: str = ""):
+    """Locate the database file used by a CB2 instance.
+
+    Args:
+        config_filepath: Path to the config file used by the CB2 instance.
+    """
+    logging.basicConfig(level=logging.INFO)
+
+    if config_filepath == "":
+        config = Config()
+        logger.info(
+            f"Showing location of default database. Specify --config_filepath to see the location for a specific config."
+        )
+    else:
+        if not os.path.exists(config_filepath):
+            logger.error(f"Provided config file does not exist: {config_filepath}")
+            sys.exit(1)
+        config = ReadConfigOrDie(config_filepath)
+    print(f"Database path: {config.database_path()}")
+
+
+if __name__ == "__main__":
+    fire.Fire(main)