X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=database.py;h=7e75d5568c5a165873470951c917378c5aca43d5;hb=93e6938856540ba2f4ed050a7631281aa2b63f3f;hp=d7ddf04e12daebebf4c090e9a5330d93ab4a3f6f;hpb=2bea6afe154924341f57f7b8633b9ca87b53b82f;p=nodemanager.git diff --git a/database.py b/database.py index d7ddf04..7e75d55 100644 --- a/database.py +++ b/database.py @@ -19,11 +19,11 @@ import time import accounts import logger import tools - +import bwmon # We enforce minimum allocations to keep the clueless from hosing their slivers. # Disallow disk loans because there's currently no way to punish slivers over quota. -MINIMUM_ALLOCATION = {'cpu_min': 0, 'cpu_share': 16, 'net_min': 0, 'net_max': 8, 'net2_min': 0, 'net2_max': 8, 'net_share': 1} +MINIMUM_ALLOCATION = {'cpu_pct': 0, 'cpu_share': 1, 'net_min_rate': 0, 'net_max_rate': 8, 'net_i2_min_rate': 0, 'net_i2_max_rate': 8, 'net_share': 1} LOANABLE_RESOURCES = MINIMUM_ALLOCATION.keys() DB_FILE = '/root/sliver_mgr_db.pickle' @@ -71,13 +71,14 @@ class Database(dict): def deliver_record(self, rec): """A record is simply a dictionary with 'name' and 'timestamp' keys. We keep some persistent private data in the records under keys that start with '_'; thus record updates should not displace such keys.""" + if rec['timestamp'] < self._min_timestamp: return name = rec['name'] old_rec = self.get(name) - if old_rec != None and rec['timestamp'] > old_rec['timestamp']: + if old_rec == None: self[name] = rec + elif rec['timestamp'] > old_rec['timestamp']: for key in old_rec.keys(): if not key.startswith('_'): del old_rec[key] old_rec.update(rec) - elif rec['timestamp'] >= self._min_timestamp: self[name] = rec def set_min_timestamp(self, ts): """The ._min_timestamp member is the timestamp on the last comprehensive update. We use it to determine if a record is stale. This method should be called whenever new GetSlivers() data comes in.""" @@ -96,13 +97,25 @@ class Database(dict): self._compute_effective_rspecs() # create and destroy accounts as needed + logger.verbose("database:sync : fetching accounts") existing_acct_names = accounts.all() for name in existing_acct_names: + logger.verbose("database:sync : loop on %s"%name) if name not in self: accounts.get(name).ensure_destroyed() for name, rec in self.iteritems(): - if rec['instantiation'] == 'plc-instantiated': accounts.get(name).ensure_created(rec) - - # request a database dump + slivr = accounts.get(name) + logger.verbose("database:sync : %s is %s" %(name,slivr._get_class())) + # Make sure we refresh accounts that are running + if rec['instantiation'] == 'plc-instantiated': slivr.ensure_created(rec) + elif rec['instantiation'] == 'nm-controller': slivr.ensure_created(rec) + # Back door to ensure PLC overrides Ticket in delegation. + elif rec['instantiation'] == 'delegated' and slivr._get_class() != None: + # if the ticket has been delivered and the nm-contoroller started the slice + # update rspecs and keep them up to date. + if slivr.is_running(): slivr.ensure_created(rec) + + # Wake up bwmom to update limits. + bwmon.lock.set() global dump_requested dump_requested = True db_cond.notify() @@ -115,10 +128,10 @@ def start(): while True: db_lock.acquire() while not dump_requested: db_cond.wait() - db_copy = tools.deepcopy(db) + db_pickle = cPickle.dumps(db, cPickle.HIGHEST_PROTOCOL) dump_requested = False db_lock.release() - try: tools.write_file(DB_FILE, lambda f: cPickle.dump(db_copy, f, -1)) + try: tools.write_file(DB_FILE, lambda f: f.write(db_pickle)) except: logger.log_exc() global db try: