"""Functionality common to all account classes.
-Each subclass of Account must provide five methods: create() and
-destroy(), which are static; configure(), start(), and stop(), which
-are not. configure(), which takes a record as its only argument, does
-things like set up ssh keys. In addition, an Account subclass must
+Each subclass of Account must provide five methods:
+ (*) create() and destroy(), which are static;
+ (*) configure(), start(), and stop(), which are not.
+
+configure(), which takes a record as its only argument, does
+things like set up ssh keys. In addition, an Account subclass must
provide static member variables SHELL, which contains the unique shell
that it uses; and TYPE, a string that is used by the account creation
code. For no particular reason, TYPE is divided hierarchically by
maximum stack size.
"""
-import Queue
import os
-import pwd
-import grp
+import pwd, grp
import threading
import logger
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."""
+ """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
type_acct_class[acct_class.TYPE] = acct_class
@staticmethod
def create(name, vref = None): abstract
+
@staticmethod
def destroy(name): abstract
def is_running(self): pass
class Worker:
+
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."""
+ """Check account type is still valid. If not, recreate sliver.
+If still valid, check if running and configure/start if not."""
+ logger.log_data_in_file(rec,"/var/lib/nodemanager/%s.rec.txt"%rec['name'],
+ 'raw rec captured in ensure_created',logger.LOG_VERBOSE)
curr_class = self._get_class()
next_class = type_acct_class[rec['type']]
if next_class != curr_class: