# account type -> account class association
type_acct_class = {}
+# these semaphores are acquired before creating/destroying an account
+create_sem = threading.Semaphore(1)
+destroy_sem = threading.Semaphore(1)
+
def register_class(acct_class):
"""Call once for each account class. This method adds the class to the dictionaries used to look up account classes by shell and type."""
shell_acct_class[acct_class.SHELL] = acct_class
def is_running(self): pass
class Worker:
- # these semaphores are acquired before creating/destroying an account
- _create_sem = threading.Semaphore(1)
- _destroy_sem = threading.Semaphore(1)
-
def __init__(self, name):
self.name = name # username
self._acct = None # the account object currently associated with this worker
def ensure_created(self, rec, startingup = Startingup):
+ """Check account type is still valid. If not, recreate sliver. If still valid,
+ check if running and configure/start if not."""
curr_class = self._get_class()
next_class = type_acct_class[rec['type']]
if next_class != curr_class:
self._destroy(curr_class)
- self._create_sem.acquire()
+ create_sem.acquire()
try: next_class.create(self.name, rec['vref'])
- finally: self._create_sem.release()
+ finally: create_sem.release()
if not isinstance(self._acct, next_class): self._acct = next_class(rec)
- else: self._acct.configure(rec)
if startingup or \
not self.is_running() or \
next_class != curr_class or \
self._acct.initscriptchanged:
- self._acct.start()
+ self.start(rec)
+ else: self._acct.configure(rec)
def ensure_destroyed(self): self._destroy(self._get_class())
- def start(self, d): self._acct.start(delay=d)
+ def start(self, rec, d = 0):
+ self._acct.configure(rec)
+ self._acct.start(delay=d)
def stop(self): self._acct.stop()
def is_running(self):
- if self._acct.is_running():
+ if (self._acct != None) and self._acct.is_running():
status = True
else:
status = False
def _destroy(self, curr_class):
self._acct = None
if curr_class:
- self._destroy_sem.acquire()
+ destroy_sem.acquire()
try: curr_class.destroy(self.name)
- finally: self._destroy_sem.release()
+ finally: destroy_sem.release()
def _get_class(self):
try: shell = pwd.getpwnam(self.name)[6]