def __init__(self, obj, subscribers, snapshot_manager=None):
self.obj = obj
self.publisher = Publisher(subscribers)
self.lock = threading.RLock()
self.master = None
self.slave = None
self.snapshot_manager = snapshot_manager
self.snapshot_timer = None
class CoopyProxy():
def __init__(self, obj, subscribers, snapshot_manager=None):
self.obj = obj
self.publisher = Publisher(subscribers)
self.lock = threading.RLock()
self.master = None
self.slave = None
self.snapshot_manager = snapshot_manager
self.snapshot_timer = None
def start_snapshot_manager(self, snapshot_time):
import time
self.snapshot_timer = SnapshotTimer(snapshot_time, self)
time.sleep(snapshot_time)
self.snapshot_timer.start()
def start_master(self, port=8012, password=None, ipc=False):
self.server = CopyNet(self.obj,
port=port,
password=password,
ipc=ipc)
self.server.start()
self.publisher.register(self.server)
self.slave = None
def start_slave(self, host, port, password=None, ipc=None):
self.server = None
self.slave = CopyNetSlave(self.obj,
self,
host=host,
password=password,
port=port,
ipc=ipc)
self.slave.start()
def __getattr__(self, name):
method = method_or_none(self.obj, name)
if not method:
return getattr(self.obj, name)
(readonly,unlocked,abort_exception) = action_check(method)
#TODO: re-write
if not readonly and hasattr(self, 'slave') and self.slave:
raise Exception('This is a slave/read-only instance.')
def method(*args, **kwargs):
exception = None
try:
if not unlocked:
self.lock.acquire(1)
#record all calls to clock.now()
self.obj._clock = RecordClock()
thread_ident = thread.get_ident()
action = Action(thread_ident,
name,
datetime.now(),
args,
kwargs)
system = None
if not readonly:
self.publisher.publish_before(action)
try:
system = action.execute_action(self.obj)
except Exception as e:
logger.debug(CORE_LOG_PREFIX + 'Error: ' + str(e))
if abort_exception:
logger.debug(CORE_LOG_PREFIX +
'Aborting action' + str(action))
if not abort_exception:
self.publisher.publish_exception(action)
exception = e
#restore clock
action.results = self.obj._clock.results
if not readonly and not abort_exception:
self.publisher.publish(action)
finally:
if not unlocked:
self.lock.release()
if exception:
raise exception
return system
return method
def basedir_abspath(self):
disk_journals = (journal for journal in self.publisher.subscribers
if hasattr(journal, 'basedir'))
return [os.path.join(os.path.abspath(os.getcwd()), journal.basedir)
for journal in disk_journals]
def take_snapshot(self):
if self.slave:
self.slave.acquire()
self.lock.acquire()
if self.snapshot_manager:
self.snapshot_manager.take_snapshot(self.obj)
self.lock.release()
if self.slave:
self.slave.release()
def close(self):
self.publisher.close()
logging.shutdown()
if self.snapshot_timer:
self.snapshot_timer.stop()
def shutdown(self):
if self.master:
self.server.close()
if self.slave:
self.slave.close()
