def getHostnameByFSUUID(self,uuid,_user="",cached=True) :
"""
returns hostname of a fileserver by uuid
"""
self.Logger.debug("called with %s, cached=%s" % (uuid,cached))
self.Logger.debug("self._CFG=%s" % (self._CFG))
if cached :
# local Cache first
for hn in self.localCache["FSUUIDs"] :
if self.localCache["FSUUIDs"][hn] == uuid :
return hn
# then DB
if self._CFG.DB_CACHE:
from DBManager import DBManager
from afs.model.FileServer import FileServer
thisDBManager=DBManager(self._CFG)
fs=thisDBManager.getFromCache(FileServer,uuid=uuid)
self.Logger.debug("looking up hostname in DB_Cache for uuid=%s" % uuid)
if fs != None :
self.localCache["FSUUIDs"][fs.servernames[0]] = fs.uuid
return fs.servernames[0]
# not found in local cache and not in DB Cache, or cacheing disabled.
# get it from live-system
from afs.dao.VLDbDAO import VLDbDAO
_vlDAO=VLDbDAO()
name_or_ip=None
for fs in _vlDAO.getFsServList(_cfg=self._CFG,_user="" ) :
if fs['uuid'] == uuid :
name_or_ip = fs['name_or_ip']
if name_or_ip == None :
raise LookupUtilError("No Server with uuid=%s registered in live-system" % uuid)
# store it in localCache
self.Logger.debug("getHostnameByFSUUID: got name_or_ip =%s from live-system" % name_or_ip)
name_or_ip=self.getDNSInfo(name_or_ip)["names"][0]
self.localCache["FSUUIDs"][name_or_ip] = uuid
self.Logger.debug("returning: %s" % name_or_ip)
return name_or_ip
