def finalize (self, _commit) :
_outcome_1 = self.operation.finalize (_commit)
_outcome_2 = self.queue.finalize ()
_outcome_3 = self.session.finalize (_commit)
_outcome = outcomes.succeed_if_all (_outcome_1, _outcome_2, _outcome_3)
if _outcome.succeeded :
_outcome = self.succeeded (None)
else :
_outcome = self.failed ('failed while closing resources', errno.EIO)
del self.session
del self.queue
del self.operation
return _outcome
def finalize(self):
_outcome = None
if _outcome is None:
if not self.initialized:
_outcome = outcomes.fail("queue not initialized")
if _outcome is None:
if len(self.operations) > 0:
_outcome = outcomes.fail("queue has pending operations")
if _outcome is None:
try:
self.queue.close()
_outcome_1 = outcomes.succeed()
except:
_outcome_1 = outcomes.fail_with_traceback("queue failed to close BDB queue database")
try:
self.data.close()
_outcome_2 = outcomes.succeed()
except:
_outcome_2 = outcomes.fail_with_traceback("queue failed to close BDB data database")
try:
self.recycle.close()
_outcome_3 = outcomes.succeed()
except:
_outcome_3 = outcomes.fail_with_traceback("queue failed to close BDB data database")
if self.session is not None:
self.session.queues.remove(self)
else:
self.store.queues.remove(self)
del self.store
del self.session
del self.name
self.initialized = None
del self.transaction
del self.queue
del self.data
del self.recycle
del self.operations
_outcome = outcomes.succeed_if_all(_outcome_1, _outcome_2, _outcome_3)
return _outcome
def enqueue (_arguments) :
_outcome = None
if _outcome is None :
if len (_arguments) == 3 :
_environment_path = _arguments[0]
_queue_name = _arguments[1]
_data_path = _arguments[2]
else :
_outcome = outcomes.fail ('enqueue invalid arguments')
_stream = None
_data = None
if _outcome is None :
try :
_stream = file (_data_path, 'rb')
_data = _stream.read (-1)
_stream.close ()
except :
_outcome = outcomes.fail_with_traceback ('failed while opening or reading input file')
if _stream is not None :
try :
_stream.close ()
except :
pass
_store = None
if _outcome is None :
_store = store.Store (_environment_path)
_outcome = _store.initialize ()
if _outcome.succeeded :
_outcome = None
_session = None
if _outcome is None :
_outcome = _store.session ()
if _outcome.succeeded :
_session = _outcome.session
_outcome = None
_queue = None
if _outcome is None :
_outcome = _session.queue (_queue_name)
if _outcome.succeeded :
_queue = _outcome.queue
_outcome = None
_operation = None
if _outcome is None :
_outcome = _queue.enqueue ()
if _outcome.succeeded :
_operation = _outcome.operation
_outcome = None
if _outcome is None :
_outcome = _operation.update (_data)
if _outcome.succeeded :
_outcome = None
if _outcome is None :
_outcome = _operation.finalize (True)
_operation = None
if _outcome.succeeded :
_outcome = None
if _outcome is None :
_outcome = _queue.finalize ()
_queue = None
if _outcome.succeeded :
_outcome = None
if _outcome is None :
_outcome = _session.finalize (True)
_session = None
if _outcome.succeeded :
_outcome = None
if _outcome is None :
_outcome = outcomes.succeed ()
_outcome_0 = _outcome
if _operation is not None :
_outcome_1 = _operation.finalize (False)
_operation = None
else :
_outcome_1 = None
if _queue is not None :
_outcome_2 = _queue.finalize ()
_queue = None
else :
_outcome_2 = None
if _session is not None :
_outcome_3 = _session.finalize (False)
_session = None
else :
_outcome_3 = None
if _store is not None :
_outcome_4 = _store.finalize ()
_store = None
else :
_outcome_4 = None
_outcome = outcomes.succeed_if_all (_outcome_0, _outcome_1, _outcome_2, _outcome_3, _outcome_4)
return _outcome
def dequeue (_arguments) :
_outcome = None
if _outcome is None :
if len (_arguments) == 3 :
_environment_path = _arguments[0]
_queue_name = _arguments[1]
_data_path = _arguments[2]
else :
_outcome = outcomes.fail ('dequeue invalid arguments')
_store = None
if _outcome is None :
_store = store.Store (_environment_path)
_outcome = _store.initialize ()
if _outcome.succeeded :
_outcome = None
_session = None
if _outcome is None :
_outcome = _store.session ()
if _outcome.succeeded :
_session = _outcome.session
_outcome = None
_queue = None
if _outcome is None :
_outcome = _session.queue (_queue_name)
if _outcome.succeeded :
_queue = _outcome.queue
_outcome = None
_operation = None
if _outcome is None :
_outcome = _queue.dequeue ()
if _outcome.succeeded :
_operation = _outcome.operation
_outcome = None
_data = None
if _outcome is None :
_outcome = _operation.poll ()
if _outcome.succeeded :
if _outcome.prepared :
_outcome = None
else :
_outcome = outcomes.fail ('dequeue unavailable data')
if _outcome is None :
_outcome = _operation.select ()
if _outcome.succeeded :
_data = _outcome.data
_outcome = None
_stream = None
if _outcome is None :
try :
_stream = file (_data_path, 'wb')
_stream.write (_data)
_stream.close ()
except :
_outcome = outcomes.fail_with_traceback ('failed while opening or writing output file')
if _stream is not None :
try :
_stream.close ()
except :
pass
if _outcome is None :
_outcome = _operation.finalize (True)
_operation = None
if _outcome.succeeded :
_outcome = None
if _outcome is None :
_outcome = _queue.finalize ()
_queue = None
if _outcome.succeeded :
_outcome = None
if _outcome is None :
_outcome = _session.finalize (True)
_session = None
if _outcome.succeeded :
_outcome = None
if _outcome is None :
_outcome = outcomes.succeed ()
_outcome_0 = _outcome
if _operation is not None :
_outcome_1 = _operation.finalize (False)
_operation = None
else :
_outcome_1 = None
if _queue is not None :
_outcome_2 = _queue.finalize ()
_queue = None
else :
_outcome_2 = None
if _session is not None :
_outcome_3 = _session.finalize (False)
_session = None
else :
_outcome_3 = None
if _store is not None :
_outcome_4 = _store.finalize ()
_store = None
else :
_outcome_4 = None
_outcome = outcomes.succeed_if_all (_outcome_0, _outcome_1, _outcome_2, _outcome_3, _outcome_4)
return _outcome