def get_object(self, obj_or_param) :
"""
return an object, regardless of what was the input (object or unique parameters)
unique paramter is name_or_id (either volume name or volume id)
"""
if isinstance(obj_or_param, Volume) :
this_Volume = obj_or_param
else :
this_Volume = Volume()
if misc.is_name(obj_or_param) :
this_Volume.name = obj_or_param
else :
this_Volume.vid = obj_or_param
return this_Volume
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
def get_dns_info(self, name_or_ip) :
"""
get DNS-info about server
returns dict{"names" : [], "ipaddrs" : []}
"""
self._logger.debug("get_dns_info: entering with name_or_ip=%s" % \
(name_or_ip))
if not is_name(name_or_ip) : # check for matching ipaddress
for hostname in afs.CONFIG.hosts :
if name_or_ip in afs.CONFIG.hosts[hostname] :
self._logger.debug("%s is hard-mapped to (%s,%s)" % \
(name_or_ip, [hostname,],afs.CONFIG.hosts[hostname]))
self._logger.debug("returning %s" % ({ "names" : [hostname, ], \
"ipaddrs" : afs.CONFIG.hosts[hostname] }) )
return { "names" : [hostname, ], \
"ipaddrs" : afs.CONFIG.hosts[hostname] }
# is a hostname
# hard-mapped, primary Hostname given
if name_or_ip in afs.CONFIG.hosts.keys() :
self._logger.debug("%s is hard-mapped to (%s,%s)" % ( name_or_ip, \
[name_or_ip, ], afs.CONFIG.hosts[name_or_ip]))
self._logger.debug("returning %s" % ({"names" : [name_or_ip,], "ipaddrs" : \
afs.CONFIG.hosts[name_or_ip] }) )
return {"names" : [name_or_ip,], "ipaddrs" : \
afs.CONFIG.hosts[name_or_ip] }
# memory_cache
if name_or_ip in self.memory_cache["dns_info"] :
self._logger.debug("%s in localcache hard-mapped (%s)" % \
(name_or_ip,self.memory_cache["dns_info"][name_or_ip] ))
self._logger.debug("returning %s" % (self.memory_cache["dns_info"][name_or_ip]))
return self.memory_cache["dns_info"][name_or_ip]
for srv in self.memory_cache["dns_info"] :
if name_or_ip in self.memory_cache["dns_info"][srv]["names"] :
self._logger.debug("%s is hard-mapped to %s" % (name_or_ip, \
self.memory_cache["dns_info"][srv] ))
self._logger.debug("returning %s" % (self.memory_cache["dns_info"][srv]) )
return self.memory_cache["dns_info"][srv]
# lookup from OS
try :
dns_info = socket.gethostbyaddr(name_or_ip)
servernames = [dns_info[0]] + dns_info[1]
ipaddrs = dns_info[2]
except socket.gaierror :
if is_name(name_or_ip) :
raise LookupUtilError("Cannot resolve %s" % name_or_ip)
else :
self._logger.warn("Cannot resolve %s" % name_or_ip)
self._logger.debug("returning %s" % ({"names": [], "ipaddrs" : [name_or_ip,]}) )
return {"names": [], "ipaddrs" : [name_or_ip,]}
self._logger.debug("%s resolves to %s" % (name_or_ip, dns_info))
# check if resolved ip-address matches (if hostalias was used)
for hostname in afs.CONFIG.hosts :
for ipaddr in ipaddrs :
# ignore IP if we're asked to do so.
if ipaddr in afs.CONFIG.ignoreIPList : continue
if ipaddr in afs.CONFIG.hosts[hostname] :
self._logger.debug("%s is hard-mapped to (%s,%s)" % \
(ipaddrs, [hostname,],afs.CONFIG.hosts[hostname]))
# add this hostalias to list in memory_cache
if self.memory_cache["dns_info"].has_key(hostname) :
self.memory_cache["dns_info"][hostname]["names"] = \
[hostname, ]
self.memory_cache["dns_info"][hostname]["ipaddrs"] = \
afs.CONFIG.hosts[hostname]
else :
self.memory_cache["dns_info"][hostname] = { \
"names" : [hostname,], \
"ipaddrs" : afs.CONFIG.hosts[hostname]}
self._logger.debug("memory_cache = %s" % \
(self.memory_cache))
ipaddrs = []
self._logger.debug("returning %s" % ({ "names" : [hostname], "ipaddrs" : \
afs.CONFIG.hosts[hostname] }) )
return { "names" : [hostname], "ipaddrs" : \
afs.CONFIG.hosts[hostname] }
if "nxdomain" in servernames[0] :
raise LookupUtilError("cannot resolve DNS-entry %s" % name_or_ip)
# fill up localcache
self.memory_cache["dns_info"][servernames[0]] = { \
"names" : servernames, "ipaddrs" : ipaddrs }
self._logger.debug("memory_cache = %s" % (self.memory_cache))
self._logger.debug("returning %s" % ({"names": servernames, "ipaddrs" : ipaddrs}) )
return {"names": servernames, "ipaddrs" : ipaddrs}
