def test_multiprocessing_multiapp_system(self):
set_db_uri()
with Orders(setup_table=True) as app:
# Create a new order.
order_id = create_new_order()
# Check new order exists in the repository.
assert order_id in app.repository
system = System(
Orders | Reservations | Orders,
Orders | Payments | Orders,
)
multiprocess = Multiprocess(system)
# Start multiprocessing system.
with multiprocess:
with Orders() as app:
retries = 50
while not app.repository[order_id].is_reserved:
time.sleep(0.1)
retries -= 1
assert retries, "Failed set order.is_reserved"
while retries and not app.repository[order_id].is_paid:
time.sleep(0.1)
retries -= 1
assert retries, "Failed set order.is_paid"
def setUp(self):
# Shutdown base actor system, if running.
# ActorSystem().shutdown()
# Set environment.
set_db_uri()
# Define system.
self.system = System(Orders | Reservations | Orders | Payments
| Orders)
def test_multiprocessing(self):
set_db_uri()
key1, key2, key3 = uuid4(), uuid4(), uuid4()
value1, value2, value3 = 11111, 22222, 33333
self.close_connections_before_forking()
pipeline_ids = [1, 2, 3]
runner = MultiprocessRunner(
system=self.system,
pipeline_ids=pipeline_ids,
infrastructure_class=self.infrastructure_class)
# Start running operating system processes.
with runner:
# Get local application object.
paxosprocess0 = runner.paxosprocess0
assert isinstance(paxosprocess0, PaxosProcess)
# Start proposing values on the different system pipelines.
paxosprocess0.change_pipeline(1)
started1 = datetime.datetime.now()
paxosprocess0.propose_value(key1, value1)
paxosprocess0.change_pipeline(2)
started2 = datetime.datetime.now()
paxosprocess0.propose_value(key2, value2)
paxosprocess0.change_pipeline(3)
started3 = datetime.datetime.now()
paxosprocess0.propose_value(key3, value3)
# Check all the process applications have expected final values.
paxosprocess1 = runner.paxosprocess1
paxosprocess2 = runner.paxosprocess1
assert isinstance(paxosprocess1, PaxosProcess)
paxosprocess0.repository.use_cache = False
paxosprocess1.repository.use_cache = False
paxosprocess2.repository.use_cache = False
self.assert_final_value(paxosprocess0, key1, value1)
self.assert_final_value(paxosprocess1, key1, value1)
self.assert_final_value(paxosprocess2, key1, value1)
duration1 = (datetime.datetime.now() - started1).total_seconds()
print("Resolved paxos 1 with multiprocessing in %ss" % duration1)
self.assert_final_value(paxosprocess0, key2, value2)
self.assert_final_value(paxosprocess1, key2, value2)
self.assert_final_value(paxosprocess2, key2, value2)
duration2 = (datetime.datetime.now() - started2).total_seconds()
print("Resolved paxos 2 with multiprocessing in %ss" % duration2)
self.assert_final_value(paxosprocess0, key3, value3)
self.assert_final_value(paxosprocess1, key3, value3)
self.assert_final_value(paxosprocess2, key3, value3)
duration3 = (datetime.datetime.now() - started3).total_seconds()
print("Resolved paxos 3 with multiprocessing in %ss" % duration3)
def test_multi_threaded(self):
if 'TRAVIS_PYTHON_VERSION' in os.environ:
if self.infrastructure_class is SQLAlchemyApplication:
self.skipTest(
"There's an intermittent problem with the multi-threaded"
"runner with SQLAlchemy and Python 3.7 on Travis. Fix me :)."
)
set_db_uri()
key1, key2, key3 = uuid4(), uuid4(), uuid4()
value1, value2, value3 = 11111, 22222, 33333
runner = MultiThreadedRunner(
system=self.system, infrastructure_class=self.infrastructure_class)
with runner:
paxosprocess0 = runner.processes['paxosprocess0']
paxosprocess1 = runner.processes['paxosprocess1']
paxosprocess2 = runner.processes['paxosprocess2']
started1 = datetime.datetime.now()
assert isinstance(paxosprocess0, PaxosProcess)
paxosprocess0.propose_value(key1, value1)
ended1 = (datetime.datetime.now() - started1).total_seconds()
# Check each process has expected final value.
self.assert_final_value(paxosprocess0, key1, value1)
self.assert_final_value(paxosprocess1, key1, value1)
self.assert_final_value(paxosprocess2, key1, value1)
print("Resolved paxos 1 with multi threads in %ss" % ended1)
started2 = datetime.datetime.now()
paxosprocess1.propose_value(key2, value2)
ended2 = (datetime.datetime.now() - started2).total_seconds()
# Check each process has a resolution.
self.assert_final_value(paxosprocess0, key2, value2)
self.assert_final_value(paxosprocess1, key2, value2)
self.assert_final_value(paxosprocess2, key2, value2)
print("Resolved paxos 2 with multi threads in %ss" % ended2)
started3 = datetime.datetime.now()
paxosprocess2.propose_value(key3, value3)
ended3 = (datetime.datetime.now() - started3).total_seconds()
# Check each process has a resolution.
self.assert_final_value(paxosprocess0, key3, value3)
self.assert_final_value(paxosprocess1, key3, value3)
self.assert_final_value(paxosprocess2, key3, value3)
print("Resolved paxos 3 with multi threads in %ss" % ended3)
def test_multiprocessing_performance(self):
set_db_uri()
num_pipelines = 2
pipeline_ids = range(num_pipelines)
runner = MultiprocessRunner(
system=self.system,
pipeline_ids=pipeline_ids,
infrastructure_class=self.infrastructure_class,
setup_tables=True)
num_proposals = 50
self.close_connections_before_forking()
with runner:
sleep(1)
# Construct an application instance in this process.
paxos_process = runner.paxosprocess0
assert isinstance(paxos_process, PaxosProcess)
# Don't use the cache, so as to keep checking actual database.
paxos_process.repository.use_cache = False
# Start timing (just for fun).
started = datetime.datetime.now()
# Propose values.
proposals = list(((uuid4(), i) for i in range(num_proposals)))
for key, value in proposals:
paxos_process.change_pipeline((value % len(pipeline_ids)))
print("Proposing key {} value {}".format(key, value))
paxos_process.propose_value(key, str(value))
sleep(0.0)
# Check final values.
for key, value in proposals:
print("Asserting final value for key {} value {}".format(
key, value))
self.assert_final_value(paxos_process, key, str(value))
# Print timing information (just for fun).
duration = (datetime.datetime.now() - started).total_seconds()
print(
"Resolved {} paxoses with multiprocessing in {:.4f}s ({:.4f}s each)"
.format(num_proposals, duration, duration / num_proposals))
def test_multiprocessing_performance(self):
set_db_uri()
system = PaxosSystem(setup_tables=True,
infrastructure_class=self.infrastructure_class)
num_pipelines = 1
pipeline_ids = range(num_pipelines)
paxos_process_class = system.process_classes['paxosprocess0']
multiprocess = MultiprocessRunner(system=system,
pipeline_ids=pipeline_ids)
num_proposals = 50
self.close_connections_before_forking()
with multiprocess:
sleep(1)
paxos_process = system.construct_app(
process_class=paxos_process_class, pipeline_id=pipeline_ids[0])
assert isinstance(paxos_process, PaxosProcess)
paxos_process.use_cache = False
paxos_process.repository._use_cache = False
with paxos_process:
started = datetime.datetime.now()
expectations = list(
((uuid4(), i) for i in range(num_proposals)))
for key, value in expectations:
paxos_process.change_pipeline((value % len(pipeline_ids)))
print("Proposing key {} value {}".format(key, value))
paxos_process.propose_value(key, str(value))
sleep(0.0)
for key, value in expectations:
print("Asserting final value for key {} value {}".format(
key, value))
self.assert_final_value(paxos_process, key, str(value))
duration = (datetime.datetime.now() - started).total_seconds()
print(
"Resolved {} paxoses with multiprocessing in {:.4f}s ({:.4f}s each)"
.format(num_proposals, duration, duration / num_proposals))
def test_multi_threaded(self, is_skipped=True):
if is_skipped:
self.skipTest(
"There's an intermittent problem with the multi-threaded"
"runner with SQLAlchemy. Fix me :).")
set_db_uri()
system = PaxosSystem(
setup_tables=True,
infrastructure_class=self.infrastructure_class,
)
key1, key2, key3 = uuid4(), uuid4(), uuid4()
value1, value2, value3 = 11111, 22222, 33333
with MultiThreadedRunner(system):
paxosprocess0 = system.processes['paxosprocess0']
paxosprocess1 = system.processes['paxosprocess1']
paxosprocess2 = system.processes['paxosprocess2']
started1 = datetime.datetime.now()
assert isinstance(paxosprocess0, PaxosProcess)
paxosprocess0.propose_value(key1, value1)
ended1 = (datetime.datetime.now() - started1).total_seconds()
# Check each process has expected final value.
self.assert_final_value(paxosprocess0, key1, value1)
self.assert_final_value(paxosprocess1, key1, value1)
self.assert_final_value(paxosprocess2, key1, value1)
print("Resolved paxos 1 with multi threads in %ss" % ended1)
started2 = datetime.datetime.now()
paxosprocess1.propose_value(key2, value2)
ended2 = (datetime.datetime.now() - started2).total_seconds()
# Check each process has a resolution.
self.assert_final_value(paxosprocess0, key2, value2)
self.assert_final_value(paxosprocess1, key2, value2)
self.assert_final_value(paxosprocess2, key2, value2)
print("Resolved paxos 2 with multi threads in %ss" % ended2)
started3 = datetime.datetime.now()
paxosprocess2.propose_value(key3, value3)
ended3 = (datetime.datetime.now() - started3).total_seconds()
# Check each process has a resolution.
self.assert_final_value(paxosprocess0, key3, value3)
self.assert_final_value(paxosprocess1, key3, value3)
self.assert_final_value(paxosprocess2, key3, value3)
print("Resolved paxos 3 with multi threads in %ss" % ended3)
def test_multiprocessing_singleapp_system(self):
system = System(Examples | Examples, setup_tables=True)
set_db_uri()
with Examples() as app, Multiprocess(system):
aggregate = ExampleAggregate.__create__()
aggregate.__save__()
assert aggregate.id in app.repository
# Check the aggregate is moved on.
retries = 50
while not app.repository[aggregate.id].is_moved_on:
time.sleep(0.1)
retries -= 1
assert retries, "Failed to move"
def test_multiprocessing(self):
set_db_uri()
system = PaxosSystem(setup_tables=True,
infrastructure_class=self.infrastructure_class)
key1, key2, key3 = uuid4(), uuid4(), uuid4()
value1, value2, value3 = 11111, 22222, 33333
paxos_process_class = system.process_classes['paxosprocess0']
paxos_process = system.construct_app(paxos_process_class,
pipeline_id=2)
paxos_process.repository._use_cache = False
self.close_connections_before_forking()
pipeline_ids = [1, 2, 3]
with MultiprocessRunner(system=system,
pipeline_ids=pipeline_ids), paxos_process:
assert isinstance(paxos_process, PaxosProcess)
sleep(1)
started1 = datetime.datetime.now()
paxos_process.propose_value(key1, value1)
paxos_process.change_pipeline(2)
started2 = datetime.datetime.now()
paxos_process.propose_value(key2, value2)
paxos_process.change_pipeline(3)
started3 = datetime.datetime.now()
paxos_process.propose_value(key3, value3)
self.assert_final_value(paxos_process, key1, value1)
duration1 = (datetime.datetime.now() - started1).total_seconds()
print("Resolved paxos 1 with multiprocessing in %ss" % duration1)
self.assert_final_value(paxos_process, key2, value2)
duration2 = (datetime.datetime.now() - started2).total_seconds()
print("Resolved paxos 2 with multiprocessing in %ss" % duration2)
self.assert_final_value(paxos_process, key3, value3)
duration3 = (datetime.datetime.now() - started3).total_seconds()
print("Resolved paxos 3 with multiprocessing in %ss" % duration3)
def test_multiprocessing(self):
set_db_uri()
system = PaxosSystem(setup_tables=True, processes=3)
with Multiprocess(system, pipeline_ids=[1, 2, 3]), PaxosProcess(name='paxosprocess0', pipeline_id=1) as \
paxosprocess0:
sleep(3)
print("Running {}".format(datetime.datetime.now()))
paxos1 = paxosprocess0.propose_value(
11111, quorum_size=system.quorum_size, assume_leader=True)
paxosprocess0.change_pipeline(2)
paxos2 = paxosprocess0.propose_value(
22222, quorum_size=system.quorum_size, assume_leader=True)
paxosprocess0.change_pipeline(3)
paxos3 = paxosprocess0.propose_value(
33333, quorum_size=system.quorum_size, assume_leader=True)
# Check each process has a resolution.
while True:
if paxosprocess0.repository[paxos1.id].resolution:
break
self.assertEqual(
paxosprocess0.repository[paxos1.id].resolution.value, 11111)
print("")
print("")
print("")
print("")
print("Finished {}".format(datetime.datetime.now()))
while True:
if paxosprocess0.repository[paxos2.id].resolution:
break
self.assertEqual(
paxosprocess0.repository[paxos2.id].resolution.value, 22222)
while True:
if paxosprocess0.repository[paxos3.id].resolution:
break
self.assertEqual(
paxosprocess0.repository[paxos3.id].resolution.value, 33333)
def set_db_uri(self):
set_db_uri()
def test_multipipeline_multiprocessing_multiapp(self):
set_db_uri()
system = System((Orders, Reservations, Orders, Payments, Orders),
setup_tables=True)
num_pipelines = 3
pipeline_ids = range(num_pipelines)
multiprocess = Multiprocess(system, pipeline_ids=pipeline_ids)
num_orders_per_pipeline = 5
order_ids = []
# Start multiprocessing system.
with multiprocess, Orders(setup_table=True) as orders:
# Create some new orders.
for _ in range(num_orders_per_pipeline):
for pipeline_id in pipeline_ids:
orders.change_pipeline(pipeline_id)
order_id = create_new_order()
order_ids.append(order_id)
time.sleep(0.05)
# Wait for orders to be reserved and paid.
retries = 10 + 10 * num_orders_per_pipeline * len(pipeline_ids)
for i, order_id in enumerate(order_ids):
while not orders.repository[order_id].is_reserved:
time.sleep(0.1)
retries -= 1
assert retries, "Failed set order.is_reserved {} ({})".format(
order_id, i)
while retries and not orders.repository[order_id].is_paid:
time.sleep(0.1)
retries -= 1
assert retries, "Failed set order.is_paid ({})".format(i)
# Calculate timings from event timestamps.
order_aggregates = [orders.repository[oid] for oid in order_ids]
first_timestamp = min([o.__created_on__ for o in order_aggregates])
last_timestamp = max(
[o.__last_modified__ for o in order_aggregates])
duration = last_timestamp - first_timestamp
rate = len(order_ids) / float(duration)
period = 1 / rate
print(
"Orders system processed {} orders in {:.3f}s at rate of {:.1f} "
"orders/s, {:.3f}s each".format(len(order_ids), duration, rate,
period))
# Print min, average, max duration.
durations = [
o.__last_modified__ - o.__created_on__
for o in order_aggregates
]
print("Min order processing time: {:.3f}s".format(min(durations)))
print("Mean order processing time: {:.3f}s".format(
sum(durations) / len(durations)))
print("Max order processing time: {:.3f}s".format(max(durations)))
def setUp(self):
# Set environment.
set_db_uri()
# Define system.
self.system = System(Orders | Reservations | Orders | Payments | Orders,
infrastructure_class=self.infrastructure_class)