X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=accounts.py;h=09c8eede62afd3627027ee6a20969cb5c84f5949;hb=667b432526d0ec3cb440711268536e5ac5f0e2dc;hp=1c96398459a17fee42004fc17322f4b81f940597;hpb=6b126788db769b67f276b386065e52514fedc206;p=nodemanager.git diff --git a/accounts.py b/accounts.py index 1c96398..09c8eed 100644 --- a/accounts.py +++ b/accounts.py @@ -23,6 +23,7 @@ maximum stack size. import Queue import os import pwd +from grp import getgrnam import threading import logger @@ -31,10 +32,6 @@ import tools # When this variable is true, start after any ensure_created Startingup = False -# Cumulative delay for starts when Startingup is true -csd_lock = threading.Lock() -cumstartdelay = 0 - # shell path -> account class association shell_acct_class = {} # account type -> account class association @@ -68,6 +65,7 @@ def get(name): class Account: def __init__(self, rec): + logger.verbose('Initing account %s'%rec['name']) self.name = rec['name'] self.keys = '' self.initscriptchanged = False @@ -80,20 +78,23 @@ class Account: def configure(self, rec): """Write to my authorized_keys file.""" + logger.verbose('%s: in accounts:configure'%self.name) new_keys = rec['keys'] if new_keys != self.keys: self.keys = new_keys dot_ssh = '/home/%s/.ssh' % self.name - def do_installation(): - if not os.access(dot_ssh, os.F_OK): os.mkdir(dot_ssh) - os.chmod(dot_ssh, 0700) - tools.write_file(dot_ssh + '/authorized_keys', lambda f: f.write(new_keys)) + if not os.access(dot_ssh, os.F_OK): os.mkdir(dot_ssh) + os.chmod(dot_ssh, 0700) + tools.write_file(dot_ssh + '/authorized_keys', lambda f: f.write(new_keys)) logger.log('%s: installing ssh keys' % self.name) - tools.fork_as(self.name, do_installation) + user = pwd.getpwnam(self.name)[2] + group = getgrnam("slices")[2] + os.chown(dot_ssh, user, group) + os.chown(dot_ssh + '/authorized_keys', user, group) def start(self, delay=0): pass def stop(self): pass - + def is_running(self): pass class Worker: # these semaphores are acquired before creating/destroying an account @@ -103,17 +104,8 @@ class Worker: def __init__(self, name): self.name = name # username self._acct = None # the account object currently associated with this worker - # task list - # outsiders request operations by putting (fn, args...) tuples on _q - # the worker thread (created below) will perform these operations in order - self._q = Queue.Queue() - tools.as_daemon_thread(self._run) - - def ensure_created(self, rec): - """Cause the account specified by to exist if it doesn't already.""" - self._q.put((self._ensure_created, rec.copy(), Startingup)) - def _ensure_created(self, rec, startingup): + def ensure_created(self, rec, startingup = Startingup): curr_class = self._get_class() next_class = type_acct_class[rec['type']] if next_class != curr_class: @@ -123,26 +115,25 @@ class Worker: finally: self._create_sem.release() if not isinstance(self._acct, next_class): self._acct = next_class(rec) else: self._acct.configure(rec) - if startingup: - csd_lock.acquire() - global cumstartdelay - delay = cumstartdelay - cumstartdelay += 2 - csd_lock.release() - self._acct.start(delay=delay) - elif next_class != curr_class or self._acct.initscriptchanged: + if startingup or \ + not self.is_running() or \ + next_class != curr_class or \ + self._acct.initscriptchanged: self._acct.start() - def ensure_destroyed(self): self._q.put((self._ensure_destroyed,)) - def _ensure_destroyed(self): self._destroy(self._get_class()) + def ensure_destroyed(self): self._destroy(self._get_class()) - def start(self, delay=0): self._q.put((self._start, delay)) - def _start(self, d): - try: self._acct.start(delay=d) - except: logger.log_exc() + def start(self, d): self._acct.start(delay=d) - def stop(self): self._q.put((self._stop,)) - def _stop(self): self._acct.stop() + def stop(self): self._acct.stop() + + def is_running(self): + if self._acct.is_running(): + status = True + else: + status = False + logger.verbose("Worker(%s): is not running" % self.name) + return status def _destroy(self, curr_class): self._acct = None @@ -155,13 +146,3 @@ class Worker: try: shell = pwd.getpwnam(self.name)[6] except KeyError: return None return shell_acct_class[shell] - - def _run(self): - """Repeatedly pull commands off the queue and execute. If memory usage becomes an issue, it might be wise to terminate after a while.""" - while True: - try: - cmd = self._q.get() - cmd[0](*cmd[1:]) - except: - logger.log("Thread for %s died." % self.name) - logger.log_exc()