feat(version): cache version to read from it not from file

vcsserver/__init__.py

@@ -1,34 +1,41 b''
 # RhodeCode VCSServer provides access to different vcs backends via network.
 # Copyright (C) 2014-2023 RhodeCode GmbH
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
 
 import os
 
+__version__ = ''
+
 
 def get_version():
+    global __version__
+    if __version__:
+        return __version__
+
     here = os.path.abspath(os.path.dirname(__file__))
     ver_file = os.path.join(here, "VERSION")
     with open(ver_file, "rt") as f:
         version = f.read().strip()
 
+    __version__ = version
     return version
 
 # link to config for pyramid
 CONFIG = {}
 
 # Populated with the settings dictionary from application init in
 #
 PYRAMID_SETTINGS = {}