def get_cached_server_version(self, server):
# check local cache first
cache = None
version = None
cache_file = os.path.join(self.options.sfi_dir,'sfi_cache.dat')
cache_key = server.url + "-version"
try:
cache = Cache(cache_file)
except IOError:
cache = Cache()
self.logger.info("Local cache not found at: %s" % cache_file)
if cache:
version = cache.get(cache_key)
if not version:
version = server.GetVersion()
# cache version for 24 hours
cache.add(cache_key, version, ttl= 60*60*24)
self.logger.info("Updating cache file %s" % cache_file)
cache.save_to_file(cache_file)
return version
