From: Christian Heller Date: Tue, 17 Feb 2015 00:43:43 +0000 (+0100) Subject: Server/py: Implement C's detect_atomic_leftover(), part of run_game(). X-Git-Tag: tce~531 X-Git-Url: https://plomlompom.com/repos/%7B%7Bprefix%7D%7D/static/%7B%7Bdb.prefix%7D%7D/do_tasks?a=commitdiff_plain;h=9b494116de1a99e3abb5c91136d4c624483593d0;p=plomrogue Server/py: Implement C's detect_atomic_leftover(), part of run_game(). --- diff --git a/plomrogue-server.py b/plomrogue-server.py index f78d12b..6b2a20a 100755 --- a/plomrogue-server.py +++ b/plomrogue-server.py @@ -3,6 +3,12 @@ import os import time +class HandledException(Exception): + """Feature-less Exception child. Use for expected operational errors.""" + + pass + + def setup_server_io(io_db): """Fill IO files DB with proper file( path)s. Write process IO test string. @@ -38,12 +44,35 @@ def cleanup_server_io(io_db): if os.access(io_db["path_worldstate"], os.F_OK): # world is active, which os.remove(io_db["path_worldstate"]) # is not guaranteed. + +def detect_atomic_leftover(path): + """Raise HandledException if file is found at path + "_tmp".""" + path_tmp = path + "_tmp" + msg = "Found file '" + path_tmp + "' that may be a leftover from an " \ + "aborted previous attempt to write '" + path + "'. Aborting until " \ + "the matter is resolved by removing it from its current path." + if os.access(path_tmp, os.F_OK): + raise HandledException(msg) + + io_db = {} try: print("DUMMY: Obey command-line arguments.") print("DUMMY: Open files.") setup_server_io(io_db) print("DUMMY: Run game.") + path_recordfile = "recordfile" + path_savefile = "savefile" + detect_atomic_leftover(path_savefile) + detect_atomic_leftover(path_recordfile) + if os.access(path_savefile, os.F_OK): + print(open(path_savefile, "r").read()) + else: + msg = "MAKE_WORLD " + str(int(time.time())) + print(msg) +except HandledException as exception: + print("Error:") + print(exception.args[0]) except: print("SOMETHING WENT WRONG\n") raise