def findLocker(self, name):
"""Lookup a locker in hesiod and return its path"""
if name in self.mounts[self._uid()]:
return self.mounts[self._uid()][name]
elif name.startswith('.'):
ro = self.findLocker(name[1:])
if ro is None or ro.startswith('/afs/.'):
return
else:
rw = ro.replace('/afs/', '/afs/.', 1)
self.mounts[self._uid()][name] = rw
syslog(LOG_INFO, "Mounting "+name+" on "+rw)
return rw
else:
try:
filsys = hesiod.FilsysLookup(name)
except IOError, e:
if e.errno in (errno.ENOENT, errno.EMSGSIZE):
raise IOError(errno.ENOENT, os.strerror(errno.ENOENT))
else:
raise IOError(errno.EIO, os.strerror(errno.EIO))
# FIXME check if the first locker is valid
if len(filsys.filsys) >= 1:
pointers = filsys.filsys
pointer = pointers[0]
if pointer['type'] != 'AFS' and pointer['type'] != 'LOC':
syslog(LOG_NOTICE, "Unknown locker type "+pointer['type']+" for locker "+name+" ("+repr(pointer)+" )")
return None
else:
self.mounts[self._uid()][name] = str(pointer['location'])
syslog(LOG_INFO, "Mounting "+name+" on "+pointer['location'])
return pointer['location']
else:
syslog(LOG_WARNING, "Couldn't find filsys for "+name)
return None
def findLocker(self, name):
"""Lookup a locker in hesiod and return its path"""
if name in self.mounts:
return self.mounts[name]
else:
try:
filsys = hesiod.FilsysLookup(name)
except IOError, e:
if e.errno in (errno.ENOENT, errno.EMSGSIZE):
raise IOError(errno.ENOENT, os.strerror(errno.ENOENT))
else:
raise IOError(errno.EIO, os.strerror(errno.EIO))
# FIXME check if the first locker is valid
if len(filsys.filsys) >= 1:
pointers = filsys.filsys
pointer = pointers[0]
if pointer['type'] != 'AFS' and pointer['type'] != 'LOC':
syslog(LOG_NOTICE, "Unknown locker type "+pointer['type']+" for locker "+name+" ("+repr(pointer)+" )")
return None
else:
self.mounts[name] = pointer['location']
syslog(LOG_INFO, "Mounting "+name+" on "+pointer['location'])
return pointer['location']
else:
syslog(LOG_WARNING, "Couldn't find filsys for "+name)
return None
def getLocker(self, action, **kwargs):
if action in self.cache:
return routefs.Symlink(self.cache[action])
try:
filsys = hesiod.FilsysLookup(action).filsys[0]
if filsys['type'] == 'AFS':
self.cache[action] = filsys['location']
return routefs.Symlink(self.cache[action])
except (TypeError, KeyError, IndexError):
return
def resolve(name):
"""
Lookup a locker in Hesiod and return a list of dictionaries, with
keys 'priority', 'data', and 'type'. If the lookup found an FSGROUP,
the list will be sorted based on key the key 'priority'.
Raises: LockerNotFoundError, LockerError
"""
filesystems = []
# Avoid generating a confusing "message too long" error from
# Hesiod.
if name.startswith('.'):
raise LockerError("Invalid locker name: " + name)
try:
filesystems = hesiod.FilsysLookup(name, parseFilsysTypes=False).filsys
except IOError as e:
if e.errno == errno.ENOENT:
raise LockerNotFoundError(name)
else:
raise LockerError("Hesiod Error: %s while resolving %s" % \
(e.strerror if e.strerror else e.message, name))
return filesystems
def get_home(name):
return hesiod.FilsysLookup(name).filsys[0]['location']