def get_hostname_by_fsuuid(self, uuid, _user = "", cached = True) :
"""
returns hostname of a fileserver by uuid
"""
self._logger.debug("called with %s, cached=%s" % (uuid, cached))
if cached :
# local Cache first
for hostname in self.memory_cache["fsuuids"] :
if not is_name(hostname) :
continue
if self.memory_cache["fsuuids"][hostname] == uuid :
self._logger.debug("returning from local cache: %s" % \
hostname)
return hostname
# then DB
if self._config.DB_CACHE:
from afs.util.DBManager import DBManager
from afs.model.FileServer import FileServer
this_dbmanager = DBManager(self._config)
fileserver = this_dbmanager.get_from_cache(FileServer, \
uuid = uuid)
self._logger.debug("looking up hostname in db_cache " + \
"for uuid=%s" % uuid)
if fileserver != None :
self.memory_cache["fsuuids"][fileserver.servernames[0]] = \
fileserver.uuid
return fileserver.servernames[0]
# not found in local cache and not in DB Cache, or cacheing disabled.
# get it from live-system
from afs.lla.VLDBLLA import VLDBLLA
_vl_lla = VLDBLLA()
name_or_ip = None
for fileserver in _vl_lla.getFsServList(\
_cfg = self._config, _user="" ) :
if fileserver['uuid'] == uuid :
name_or_ip = fileserver['name_or_ip']
if name_or_ip == None :
raise LookupUtilError("No Server with uuid=%s " + \
"registered in live-system" % uuid)
# store it in memory_cache
self._logger.debug("get_hostname_by_fsuuid: got " + \
" name_or_ip = %s from live-system" % name_or_ip)
name_or_ip = self.get_dns_info(name_or_ip)["names"][0]
self.memory_cache["fsuuids"][name_or_ip] = uuid
self._logger.debug("returning: %s" % name_or_ip)
return name_or_ip
