def test_timed_signal_with_eventbus():
time = datetime.now()
# Create a signal
a = TimedSignal('<1,2>', time)
b = Bus()
def callback(bus, signal=None):
eq_(signal.time, time, "Expected same time value!")
eq_(signal.neuron, '<1,2>', "Expected same neuron index!")
b.subscribe('Fired', callback)
# Fire the signal
b.publish('Fired', signal=a)
def test_timed_signal_with_eventbus():
time = datetime.now()
# Create a signal
a = TimedSignal('<1,2>', time)
b = Bus()
def callback(bus, signal=None):
eq_(signal.time, time, "Expected same time value!")
eq_(signal.neuron, '<1,2>', "Expected same neuron index!")
b.subscribe('Fired', callback)
# Fire the signal
b.publish('Fired', signal=a)
class Limiter(object):
def __init__(self, limiter_miss_timeout_ms=None):
self.bus = Bus()
self.limiter_miss_timeout_ms = limiter_miss_timeout_ms
if self.limiter_miss_timeout_ms is None:
self.limiter_miss_timeout_ms = 500
def handle_callbacks(self, callback):
def handle(bus, *args, **kw):
callback(*args, **kw)
return handle
def subscribe_to_lock_miss(self, callback):
self.bus.subscribe('limiter.miss', self.handle_callbacks(callback))
def publish_lock_miss(self, url):
self.bus.publish('limiter.miss', url)
class Limiter(object):
def __init__(self, limiter_miss_timeout_ms=None):
self.bus = Bus()
self.limiter_miss_timeout_ms = limiter_miss_timeout_ms
if self.limiter_miss_timeout_ms is None:
self.limiter_miss_timeout_ms = 500
def handle_callbacks(self, callback):
def handle(bus, *args, **kw):
callback(*args, **kw)
return handle
def subscribe_to_lock_miss(self, callback):
self.bus.subscribe('limiter.miss', self.handle_callbacks(callback))
def publish_lock_miss(self, url):
self.bus.publish('limiter.miss', url)
class EventBus:
def __init__(self):
#TODO: convert to singleton
global log
self._bus = Bus()
self._channel = 'default/'
self._log_channel_key = 'log/'
self._sensor_channel_key = 'sensor/'
self._event_channel_key = 'event/'
self._command_channel_key = 'command/'
self._type = 'EventBus'
self._capabilities = {'get_nodes':self.register_sensorbus,
'get_eventbus_nodes':self.register_sensorbus,
'get_commandbus_nodes':self.register_sensorbus,
'get_logbus_nodes':self.register_sensorbus,
}
self._container = {}
#log.info('EventBus Initalized')
def get_nodes(self):
return
def register_sensorbus(self, callback):
self._bus.subscribe(self._sensor_channel_key, callback)
log.debug(str(callback) + ' registered to sensor bus.' )
# todo: log subs
def register_eventbus(self, callback):
self._bus.subscribe(self._event_channel_key, callback)
log.debug(str(callback) + ' registered to event bus.')
# todo: log subs
def register_logbus(self, callback):
self._bus.subscribe(self._log_channel_key, callback)
log.debug(str(callback) + ' registered to error bus.')
# todo: log subs
def register_commandbus(self, callback):
self._bus.subscribe(self._command_channel_key, callback)
log.debug(str(callback) + ' registered to command bus.')
# todo: log subs
def unregister(self, channel, callback):
# todo: log unsub
self._bus.unsubscribe(channel, callback)
log.debug('%s unregistered from %s') % (str(callback), channel)
def publish(self, data):
self._bus.publish(self._sensor_channel_key, data)
def publish_sensor(self, data):
self._bus.publish(self._sensor_channel_key, data)
def publish_log(self, data):
self._bus.publish(self._log_channel_key, data)
def publish_event(self, data):
self._bus.publish(self._event_channel_key, data)
def publish_command(self, data):
self._bus.publish(self._command_channel_key, data)
class TestBus(unittest.TestCase):
def callback(self, bus, argument):
self.called_bus = bus
self.has_run = True
self.argument = argument
self.callback_count = self.callback_count + 1
def setUp(self):
self.bus = Bus()
self.reset_test()
def reset_test(self):
self.has_run = False
self.called_bus = None
self.argument = ""
self.callback_count = 0
def test_can_haz_bus(self):
assert self.bus
def test_has_no_subscriptions(self):
assert not self.bus.subscriptions
def test_subscribe_is_chainable(self):
bus = self.bus.subscribe('test.key', self.callback)
assert bus == self.bus
def test_can_subscribe_to_event(self):
self.bus.subscribe('test.key', self.callback)
expected = [{ 'key': 'test.key', 'callback': self.callback }]
assert 'test.key' in self.bus.subscriptions
assert self.bus.subscriptions['test.key']
assert expected == self.bus.subscriptions['test.key']
def test_subscribing_twice_with_same_subject_and_callback_ignores_second_call(self):
self.bus.subscribe('test.key', self.callback).subscribe('test.key', self.callback)
assert len(self.bus.subscriptions['test.key']) == 1, len(self.bus.subscriptions['test.key'])
def test_subscribing_by_force(self):
self.bus.subscribe('test.key', self.callback).subscribe('test.key', self.callback, force=True)
assert len(self.bus.subscriptions['test.key']) == 2, len(self.bus.subscriptions['test.key'])
def test_subscribe_to_all_events(self):
self.bus.subscribe('*', self.callback)
self.bus.publish('test.key1')
assert self.has_run and self.argument == 'test.key1'
self.has_run = False
self.bus.publish('test.key2')
assert self.has_run and self.argument == 'test.key2'
def test_unsubscribe_is_chainable(self):
bus = self.bus.unsubscribe('test.key', self.callback)
assert bus == self.bus
def test_unsubscribe_to_invalid_subject_does_nothing(self):
self.bus.unsubscribe('test.key', self.callback)
assert 'test.key' not in self.bus.subscriptions
def test_unsubscribe_to_invalid_callback_does_nothing(self):
self.bus.subscribe('test.key', self.callback)
self.bus.unsubscribe('test.key', lambda obj: obj)
assert len(self.bus.subscriptions['test.key']) == 1, len(self.bus.subscriptions['test.key'])
def test_can_unsubscribe_to_event(self):
self.bus.subscribe('test.key', self.callback).unsubscribe('test.key', self.callback)
assert len(self.bus.subscriptions['test.key']) == 0, len(self.bus.subscriptions['test.key'])
def test_unsubscribe_all_does_nothing_for_nonexistent_key(self):
self.bus.subscribe('test.key', self.callback)
self.bus.unsubscribe_all('other.key')
assert len(self.bus.subscriptions['test.key']) == 1, len(self.bus.subscriptions['test.key'])
def test_unsubscribe_all_is_chainable(self):
bus = self.bus.unsubscribe_all('test.key')
assert bus == self.bus
def test_unsubscribe_all(self):
self.bus.subscribe('test.key', self.callback)
self.bus.subscribe('test.key', lambda obj: obj)
self.bus.unsubscribe_all('test.key')
assert len(self.bus.subscriptions['test.key']) == 0, len(self.bus.subscriptions['test.key'])
def test_has_subscription(self):
self.bus.subscribe('test.key', self.callback)
assert self.bus.has_subscription('test.key', self.callback)
self.bus.unsubscribe('test.key', self.callback)
assert not self.bus.has_subscription('test.key', self.callback)
def test_does_not_have_subscription_for_invalid_key(self):
assert not self.bus.has_subscription('test.key', self.callback)
def test_does_not_have_subscription_for_invalid_calback(self):
self.bus.subscribe('test.key', self.callback)
assert not self.bus.has_subscription('test.key', lambda obj: obj)
def test_has_any_subscriptions_for_invalid_key(self):
assert not self.bus.has_any_subscriptions('test.key')
def test_has_any_subscriptions(self):
self.bus.subscribe('test.key', self.callback)
assert self.bus.has_any_subscriptions('test.key')
self.bus.unsubscribe('test.key', self.callback)
assert not self.bus.has_any_subscriptions('test.key')
def test_can_publish(self):
self.bus.subscribe('test.key', self.callback)
self.bus.publish('test.key', argument="something")
assert self.has_run
assert self.argument == "something"
assert self.called_bus == self.bus
def test_can_publish_with_noone_listening(self):
self.bus.publish('test.key', something="whatever")
def test_publish_is_chainable(self):
bus = self.bus.publish('test.key', something="whatever")
assert bus == self.bus
def test_subscribing_to_different_keys(self):
self.bus.subscribe('test.key', self.callback)
self.bus.subscribe('test.key2', self.callback)
self.bus.subscribe('test.key3', self.callback)
assert 'test.key' in self.bus.subscriptions
assert 'test.key2' in self.bus.subscriptions
assert 'test.key3' in self.bus.subscriptions
assert self.bus.subscriptions['test.key']
assert self.bus.subscriptions['test.key2']
assert self.bus.subscriptions['test.key3']
def test_can_reset_bus(self):
self.bus.subscribe('test.key', self.callback)
self.bus.subscribe('test.key2', self.callback)
self.bus.subscribe('test.key3', self.callback)
self.bus.reset()
assert 'test.key' not in self.bus.subscriptions
assert 'test.key2' not in self.bus.subscriptions
assert 'test.key3' not in self.bus.subscriptions
def test_only_one_instance_of_the_bus(self):
bus_a = Bus.get_or_create('bus_a')
bus_b = Bus.get_bus('bus_a')
bus_c = Bus.get_or_create('bus_c')
bus_d = Bus()
assert bus_a is bus_b
assert bus_a is not bus_c
assert bus_d is not bus_a
def test_get_or_create_only_once(self):
bus_a = Bus.get_or_create('bus_a')
bus_b = Bus.get_or_create('bus_a')
assert bus_a is bus_b
def test_delete_bus_instances(self):
bus_x = Bus.get_or_create('bus_x')
assert bus_x in Bus._instances.values()
Bus.delete_bus('bus_x')
assert bus_x not in Bus._instances.values()
with self.assertRaises(KeyError):
Bus.delete_bus('bus_x')
def test_bus_is_not_specific(self):
bus_y = Bus()
bus_z = Bus.get_or_create('bus_z')
assert bus_y is not bus_z
def test_get_bus_name_none(self):
bus_name = Bus.get_bus_name(self.bus)
assert bus_name is None
def test_get_bus_name_string(self):
bus_x = Bus('bus_x')
assert Bus.get_bus_name(bus_x) == 'bus_x'
def test_subkey_subscriptions_simple(self):
self.bus.subscribe('level1a.level2a', self.callback)
# we have subscribed to a parent level thus we should receive this publish
self.bus.publish('level1a.level2a.level3a', argument="something")
assert self.has_run
assert self.argument == "something"
assert self.called_bus == self.bus
assert self.callback_count == 1
def test_subkey_subscriptions_no_start_match(self):
# make sure that we only get publishes if the start of the key is an exact match
self.reset_test()
self.bus.subscribe('level1a.level2a', self.callback)
self.bus.publish('blah.level1a.level2a.level3a', argument="something")
assert not self.has_run
assert self.argument == ""
assert self.called_bus == None
assert self.callback_count == 0
def test_subkey_subscriptions_complex(self):
self.reset_test()
self.bus.subscribe('level1a.level2a', self.callback)
self.bus.subscribe('level1a.level2a.level3a', self.callback)
self.bus.subscribe('level1a.level2a.level3b', self.callback)
# we have subscribed to a parent level thus we should receive this publish
self.bus.publish('level1a.level2a.level3a', argument="something")
assert self.has_run
assert self.argument == "something"
assert self.called_bus == self.bus
assert self.callback_count == 2
# following test should get callback for level1a.level2a and level1a.level2a.level3a
self.reset_test()
self.bus.publish('level1a.level2a.level3b', argument="something2")
assert self.has_run
assert self.argument == "something2"
assert self.called_bus == self.bus
assert self.callback_count == 2
self.reset_test()
self.bus.subscribe('level1a', self.callback)
self.bus.publish('level1a.level2b', argument="something2")
assert self.has_run
assert self.argument == "something2"
assert self.called_bus == self.bus
assert self.callback_count == 1
def test_messages_across_threads_thread_subscribe1(self):
# in this example we create a thread and then from outside that thread we create a subscription to one of the
# threads functions
bus_a = Bus.get_or_create('bus_a')
new_thread = ThreadClass1()
new_thread.start()
bus_a.subscribe('level1a.level2a', new_thread.message_callback)
# we have subscribed to a parent level thus we should receive this publish
bus_a.publish('level1a.level2a.level3a', argument="hello")
#assert self.has_run
assert new_thread.get_latest_argument() == "hello"
assert new_thread.get_bus() == bus_a
assert new_thread.get_latest_counter() == 1
new_thread.stop()
def test_messages_across_threads_thread_subscribe2(self):
# in this example we create a thread and then from outside that thread we create a subscription to one of the
# threads functions
bus_a = Bus.get_or_create('bus_a')
new_thread = ThreadClass2()
new_thread.start()
while not new_thread.running():
time.sleep(0.05)
# we have subscribed to a parent level thus we should receive this publish
bus_a.publish('level1a.level2a.level3a', argument="hello_there")
new_thread.stop()
#assert self.has_run
assert new_thread.get_latest_argument() == "hello_there"
assert new_thread.get_bus() == bus_a
assert new_thread.get_latest_counter() == 1
def test_messages_across_threads_thread_publish(self):
# in this example we create a thread and then from inside that thread we perform a publish which eventuates
# in this main thread
self.reset_test()
bus_a = Bus.get_or_create('bus_a')
bus_a.subscribe('level1a.level2a', self.callback)
new_thread = ThreadClass3()
new_thread.start()
while not new_thread.running():
time.sleep(0.05)
new_thread.stop()
assert self.has_run
assert self.argument == "hello from thread"
assert self.called_bus == bus_a
assert self.callback_count == 1
proc = pickle.load(file)
return proc
# def eventHandler(self, msg):
# self.updateLamportClock()
#
# # if msg.sourceID == self.uid or msg.sourceID == self.uid:
# if msg.sourceID == self.uid:
# localEvent(msg)
# else:
# remoteEvent(msg)
class TestController(unittest.TestCase):
def setUp(self):
self.process1 = process(1, 2)
self.process2 = process(2,2)
pass
def testJava(self):
pass
def busTester(self, text):
print(str(text))
if __name__ == "__main__":
bus = Bus()
bus.subscribe("tester",busTester)
bus.publish("tester",text="Hi there!")
class TestBus(unittest.TestCase):
def callback(self, bus, argument):
self.called_bus = bus
self.has_run = True
self.argument = argument
def setUp(self):
self.bus = Bus()
self.has_run = False
self.called_bus = None
def test_can_haz_bus(self):
assert self.bus
def test_has_no_subscriptions(self):
assert not self.bus.subscriptions
def test_subscribe_is_chainable(self):
bus = self.bus.subscribe('test.key', self.callback)
assert bus == self.bus
def test_can_subscribe_to_event(self):
self.bus.subscribe('test.key', self.callback)
expected = [{ 'key': 'test.key', 'callback': self.callback }]
assert 'test.key' in self.bus.subscriptions
assert self.bus.subscriptions['test.key']
assert expected == self.bus.subscriptions['test.key']
def test_subscribing_twice_with_same_subject_and_callback_ignores_second_call(self):
self.bus.subscribe('test.key', self.callback).subscribe('test.key', self.callback)
assert len(self.bus.subscriptions['test.key']) == 1, len(self.bus.subscriptions['test.key'])
def test_subscribing_by_force(self):
self.bus.subscribe('test.key', self.callback).subscribe('test.key', self.callback, force=True)
assert len(self.bus.subscriptions['test.key']) == 2, len(self.bus.subscriptions['test.key'])
def test_unsubscribe_is_chainable(self):
bus = self.bus.unsubscribe('test.key', self.callback)
assert bus == self.bus
def test_unsubscribe_to_invalid_subject_does_nothing(self):
self.bus.unsubscribe('test.key', self.callback)
assert 'test.key' not in self.bus.subscriptions
def test_unsubscribe_to_invalid_callback_does_nothing(self):
self.bus.subscribe('test.key', self.callback)
self.bus.unsubscribe('test.key', lambda obj: obj)
assert len(self.bus.subscriptions['test.key']) == 1, len(self.bus.subscriptions['test.key'])
def test_can_unsubscribe_to_event(self):
self.bus.subscribe('test.key', self.callback).unsubscribe('test.key', self.callback)
assert len(self.bus.subscriptions['test.key']) == 0, len(self.bus.subscriptions['test.key'])
def test_unsubscribe_all_does_nothing_for_nonexistent_key(self):
self.bus.subscribe('test.key', self.callback)
self.bus.unsubscribe_all('other.key')
assert len(self.bus.subscriptions['test.key']) == 1, len(self.bus.subscriptions['test.key'])
def test_unsubscribe_all_is_chainable(self):
bus = self.bus.unsubscribe_all('test.key')
assert bus == self.bus
def test_unsubscribe_all(self):
self.bus.subscribe('test.key', self.callback)
self.bus.subscribe('test.key', lambda obj: obj)
self.bus.unsubscribe_all('test.key')
assert len(self.bus.subscriptions['test.key']) == 0, len(self.bus.subscriptions['test.key'])
def test_has_subscription(self):
self.bus.subscribe('test.key', self.callback)
assert self.bus.has_subscription('test.key', self.callback)
self.bus.unsubscribe('test.key', self.callback)
assert not self.bus.has_subscription('test.key', self.callback)
def test_does_not_have_subscription_for_invalid_key(self):
assert not self.bus.has_subscription('test.key', self.callback)
def test_does_not_have_subscription_for_invalid_calback(self):
self.bus.subscribe('test.key', self.callback)
assert not self.bus.has_subscription('test.key', lambda obj: obj)
def test_has_any_subscriptions_for_invalid_key(self):
assert not self.bus.has_any_subscriptions('test.key')
def test_has_any_subscriptions(self):
self.bus.subscribe('test.key', self.callback)
assert self.bus.has_any_subscriptions('test.key')
self.bus.unsubscribe('test.key', self.callback)
assert not self.bus.has_any_subscriptions('test.key')
def test_can_publish(self):
self.bus.subscribe('test.key', self.callback)
self.bus.publish('test.key', argument="something")
assert self.has_run
assert self.argument == "something"
assert self.called_bus == self.bus
def test_can_publish_with_noone_listening(self):
self.bus.publish('test.key', something="whatever")
def test_publish_is_chainable(self):
bus = self.bus.publish('test.key', something="whatever")
assert bus == self.bus
def test_subscribing_to_different_keys(self):
self.bus.subscribe('test.key', self.callback)
self.bus.subscribe('test.key2', self.callback)
self.bus.subscribe('test.key3', self.callback)
assert 'test.key' in self.bus.subscriptions
assert 'test.key2' in self.bus.subscriptions
assert 'test.key3' in self.bus.subscriptions
assert self.bus.subscriptions['test.key']
assert self.bus.subscriptions['test.key2']
assert self.bus.subscriptions['test.key3']
def test_can_reset_bus(self):
self.bus.subscribe('test.key', self.callback)
self.bus.subscribe('test.key2', self.callback)
self.bus.subscribe('test.key3', self.callback)
self.bus.reset()
assert 'test.key' not in self.bus.subscriptions
assert 'test.key2' not in self.bus.subscriptions
assert 'test.key3' not in self.bus.subscriptions
class SpikingNeuron(object):
def __init__(self, index, network_bus,
efficacy_pause=2,
efficacy_duration=4,
arp=2,
threshold=1.5):
"""
A :class:`SpikingNeuron` object is created with the bus for the
current network as an argument. It communicates with the network
solely through this bus.
Neurons have their own event buses to which they broadcast their
firings. To attach neurons to this bus, simply call the attach
method on the pre-synaptic neuron passing the post-synaptic neuron
as an argument.
The firing of a neuron is contained within a :class:'TimedSignal'
object.
"""
self._network_bus = network_bus
self._firing_bus = Bus()
self._index = index
# Internal plumbing
self._activation_signals = []
self._firing_times = []
# Neuron parameters
self._efficacy_pause = efficacy_pause
self._efficacy_duration = efficacy_duration
self._arp = arp
self._threshold = threshold
def get_index(self):
""" Returns the index for this neuron. This should be an immutable
property. As such, only the get method is implemented."""
return self._index
index = property(get_index)
def _fire(self):
"""
Private method. Used to create a signal and to broadcast it to
the private event bus of this neuron.
"""
time = datetime.now()
signal = TimedSignal(self.index, time)
# Append the current firing time to the _firing_times
self._firing_times.append(time)
# Broadcast the signal
self._firing_bus.publish(NEURON_FIRE_EVENT_KEY, signal)
def attach(self, post_synaptic_neuron):
"""
Attaches :obj:`post_synaptic_neuron` as a synaptic connection to
which it will send signals. This is managed by simply adding
:obj:`post_synaptic_neuron`.activate() to the private event bus
for this neuron.
"""
self._firing_bus.subscribe(NEURON_FIRE_EVENT_KEY,
post_synaptic_neuron.activate)
return
def activate(self, bus, signal=None):
if signal is not None:
# Add this activation to the _activation_signals list
self._activation_signals.append(signal)
def compute(self):
"""
Computes the activation level at this time. Considers the signals
in :obj:`self._activation_signals`, reverse chronologically. Only
considers those signals which were fired less than
:obj:`self._efficacy_duration` ago. Beyond this value, all
activation levels due to those signals should be zero.
Additional notes: This implementation is based on a piecewise
constant model as defined in
Maass, 1995 | Analog Computations on Networks of Spiking Neurons
Type A
"""
level = 0
current_time = datetime.now()
for signal in reversed(self._activation_signals):
delta = current_time - signal.time
delta = delta.seconds * 1000 + delta.microseconds * 0.001
# Adjust to miliseconds
if delta > self._efficacy_duration:
# If the signal was fired more than self._efficacy_duration ms
# ago, it and all the signals before it will have no effect on
# the computation.
break
if delta < self._efficacy_duration and \
delta > self._efficacy_pause:
# Only consider if the signal has started having effects at
# all.
level += NEURON_ACTIVATION_LEVEL
return level
def touch(self):
"""
Checks whether the current value of the activation is higher than
the threshold. If so, and the current time is more than the
absolute refractory period since the last firing, neuron sends out
a synapse.
"""
if len(self._firing_times) != 0:
# Makes sense to compute delta_t only if there have been firings
current_time = datetime.now()
delta = current_time - self._firing_times[-1]
delta = delta.seconds * 1000 + delta.microseconds * 0.001
if delta < self._arp:
# No point in computing the activation level if still in the
# absolute refractory period
return
activation_level = self.compute()
if activation_level > self._threshold:
self._fire()
return proc
# def eventHandler(self, msg):
# self.updateLamportClock()
#
# # if msg.sourceID == self.uid or msg.sourceID == self.uid:
# if msg.sourceID == self.uid:
# localEvent(msg)
# else:
# remoteEvent(msg)
class TestController(unittest.TestCase):
def setUp(self):
self.process1 = process(1, 2)
self.process2 = process(2, 2)
pass
def testJava(self):
pass
def busTester(self, text):
print(str(text))
if __name__ == "__main__":
bus = Bus()
bus.subscribe("tester", busTester)
bus.publish("tester", text="Hi there!")
if eventType == "exit" or eventType == "cancel":
foreverLoop = False
elif eventType == "select":
contactIndex = idx
contact = Items[idx]
setScreen("callConfirmation")
screens["callConfirmation"].focus = 0
if menuName == "callConfirmation":
if eventType == "select" and item[1] == "call":
setScreen("call")
else:
setScreen("contactsList")
if menuName == "call":
setScreen("contactsList")
setScreen("contactsList")
while foreverLoop:
dt = pygame.time.Clock().tick(10)
for event in pygame.event.get():
if event.type == pygame.QUIT:
bus.publish('gui.global', when=displayMode, eventType=pygame.QUIT)
elif event.type == pygame.KEYDOWN:
bus.publish('gui.key', when=displayMode, eventKey=event.key)
screens[displayMode].run()
pygame.quit()
class TestBus(unittest.TestCase):
def callback(self, bus, argument):
self.called_bus = bus
self.has_run = True
self.argument = argument
def setUp(self):
self.bus = Bus()
self.has_run = False
self.called_bus = None
def test_can_haz_bus(self):
assert self.bus
def test_has_no_subscriptions(self):
assert not self.bus.subscriptions
def test_subscribe_is_chainable(self):
bus = self.bus.subscribe('test.key', self.callback)
assert bus == self.bus
def test_can_subscribe_to_event(self):
self.bus.subscribe('test.key', self.callback)
expected = [{'key': 'test.key', 'callback': self.callback}]
assert 'test.key' in self.bus.subscriptions
assert self.bus.subscriptions['test.key']
assert expected == self.bus.subscriptions['test.key']
def test_subscribing_twice_with_same_subject_and_callback_ignores_second_call(
self):
self.bus.subscribe('test.key',
self.callback).subscribe('test.key', self.callback)
assert len(self.bus.subscriptions['test.key']) == 1, len(
self.bus.subscriptions['test.key'])
def test_subscribing_by_force(self):
self.bus.subscribe('test.key', self.callback).subscribe('test.key',
self.callback,
force=True)
assert len(self.bus.subscriptions['test.key']) == 2, len(
self.bus.subscriptions['test.key'])
def test_subscribe_to_all_events(self):
self.bus.subscribe('*', self.callback)
self.bus.publish('test.key1')
assert self.has_run and self.argument == 'test.key1'
self.has_run = False
self.bus.publish('test.key2')
assert self.has_run and self.argument == 'test.key2'
def test_unsubscribe_is_chainable(self):
bus = self.bus.unsubscribe('test.key', self.callback)
assert bus == self.bus
def test_unsubscribe_to_invalid_subject_does_nothing(self):
self.bus.unsubscribe('test.key', self.callback)
assert 'test.key' not in self.bus.subscriptions
def test_unsubscribe_to_invalid_callback_does_nothing(self):
self.bus.subscribe('test.key', self.callback)
self.bus.unsubscribe('test.key', lambda obj: obj)
assert len(self.bus.subscriptions['test.key']) == 1, len(
self.bus.subscriptions['test.key'])
def test_can_unsubscribe_to_event(self):
self.bus.subscribe('test.key',
self.callback).unsubscribe('test.key',
self.callback)
assert len(self.bus.subscriptions['test.key']) == 0, len(
self.bus.subscriptions['test.key'])
def test_unsubscribe_all_does_nothing_for_nonexistent_key(self):
self.bus.subscribe('test.key', self.callback)
self.bus.unsubscribe_all('other.key')
assert len(self.bus.subscriptions['test.key']) == 1, len(
self.bus.subscriptions['test.key'])
def test_unsubscribe_all_is_chainable(self):
bus = self.bus.unsubscribe_all('test.key')
assert bus == self.bus
def test_unsubscribe_all(self):
self.bus.subscribe('test.key', self.callback)
self.bus.subscribe('test.key', lambda obj: obj)
self.bus.unsubscribe_all('test.key')
assert len(self.bus.subscriptions['test.key']) == 0, len(
self.bus.subscriptions['test.key'])
def test_has_subscription(self):
self.bus.subscribe('test.key', self.callback)
assert self.bus.has_subscription('test.key', self.callback)
self.bus.unsubscribe('test.key', self.callback)
assert not self.bus.has_subscription('test.key', self.callback)
def test_does_not_have_subscription_for_invalid_key(self):
assert not self.bus.has_subscription('test.key', self.callback)
def test_does_not_have_subscription_for_invalid_calback(self):
self.bus.subscribe('test.key', self.callback)
assert not self.bus.has_subscription('test.key', lambda obj: obj)
def test_has_any_subscriptions_for_invalid_key(self):
assert not self.bus.has_any_subscriptions('test.key')
def test_has_any_subscriptions(self):
self.bus.subscribe('test.key', self.callback)
assert self.bus.has_any_subscriptions('test.key')
self.bus.unsubscribe('test.key', self.callback)
assert not self.bus.has_any_subscriptions('test.key')
def test_can_publish(self):
self.bus.subscribe('test.key', self.callback)
self.bus.publish('test.key', argument="something")
assert self.has_run
assert self.argument == "something"
assert self.called_bus == self.bus
def test_can_publish_with_noone_listening(self):
self.bus.publish('test.key', something="whatever")
def test_publish_is_chainable(self):
bus = self.bus.publish('test.key', something="whatever")
assert bus == self.bus
def test_subscribing_to_different_keys(self):
self.bus.subscribe('test.key', self.callback)
self.bus.subscribe('test.key2', self.callback)
self.bus.subscribe('test.key3', self.callback)
assert 'test.key' in self.bus.subscriptions
assert 'test.key2' in self.bus.subscriptions
assert 'test.key3' in self.bus.subscriptions
assert self.bus.subscriptions['test.key']
assert self.bus.subscriptions['test.key2']
assert self.bus.subscriptions['test.key3']
def test_can_reset_bus(self):
self.bus.subscribe('test.key', self.callback)
self.bus.subscribe('test.key2', self.callback)
self.bus.subscribe('test.key3', self.callback)
self.bus.reset()
assert 'test.key' not in self.bus.subscriptions
assert 'test.key2' not in self.bus.subscriptions
assert 'test.key3' not in self.bus.subscriptions
def test_only_one_instance_of_the_bus(self):
bus_a = Bus.get_or_create('bus_a')
bus_b = Bus.get_bus('bus_a')
bus_c = Bus.get_or_create('bus_c')
bus_d = Bus()
assert bus_a is bus_b
assert bus_a is not bus_c
assert bus_d is not bus_a
def test_get_or_create_only_once(self):
bus_a = Bus.get_or_create('bus_a')
bus_b = Bus.get_or_create('bus_a')
assert bus_a is bus_b
def test_delete_bus_instances(self):
bus_x = Bus.get_or_create('bus_x')
assert bus_x in Bus._instances.values()
Bus.delete_bus('bus_x')
assert bus_x not in Bus._instances.values()
with self.assertRaises(KeyError):
Bus.delete_bus('bus_x')
def test_bus_is_not_specific(self):
bus_y = Bus()
bus_z = Bus.get_or_create('bus_z')
assert bus_y is not bus_z
def test_get_bus_name_none(self):
bus_name = Bus.get_bus_name(self.bus)
assert bus_name is None
def test_get_bus_name_string(self):
bus_x = Bus('bus_x')
assert Bus.get_bus_name(bus_x) == 'bus_x'
class TestBus(unittest.TestCase):
def callback(self, bus, argument):
self.called_bus = bus
self.has_run = True
self.argument = argument
def setUp(self):
self.bus = Bus()
self.has_run = False
self.called_bus = None
def test_can_haz_bus(self):
assert self.bus
def test_has_no_subscriptions(self):
assert not self.bus.subscriptions
def test_subscribe_is_chainable(self):
bus = self.bus.subscribe('test.key', self.callback)
assert bus == self.bus
def test_can_subscribe_to_event(self):
self.bus.subscribe('test.key', self.callback)
expected = [{'key': 'test.key', 'callback': self.callback}]
assert 'test.key' in self.bus.subscriptions
assert self.bus.subscriptions['test.key']
assert expected == self.bus.subscriptions['test.key']
def test_subscribing_twice_with_same_subject_and_callback_ignores_second_call(
self):
self.bus.subscribe('test.key',
self.callback).subscribe('test.key', self.callback)
assert len(self.bus.subscriptions['test.key']) == 1, len(
self.bus.subscriptions['test.key'])
def test_subscribing_by_force(self):
self.bus.subscribe('test.key', self.callback).subscribe('test.key',
self.callback,
force=True)
assert len(self.bus.subscriptions['test.key']) == 2, len(
self.bus.subscriptions['test.key'])
def test_unsubscribe_is_chainable(self):
bus = self.bus.unsubscribe('test.key', self.callback)
assert bus == self.bus
def test_unsubscribe_to_invalid_subject_does_nothing(self):
self.bus.unsubscribe('test.key', self.callback)
assert 'test.key' not in self.bus.subscriptions
def test_unsubscribe_to_invalid_callback_does_nothing(self):
self.bus.subscribe('test.key', self.callback)
self.bus.unsubscribe('test.key', lambda obj: obj)
assert len(self.bus.subscriptions['test.key']) == 1, len(
self.bus.subscriptions['test.key'])
def test_can_unsubscribe_to_event(self):
self.bus.subscribe('test.key',
self.callback).unsubscribe('test.key',
self.callback)
assert len(self.bus.subscriptions['test.key']) == 0, len(
self.bus.subscriptions['test.key'])
def test_unsubscribe_all_does_nothing_for_nonexistent_key(self):
self.bus.subscribe('test.key', self.callback)
self.bus.unsubscribe_all('other.key')
assert len(self.bus.subscriptions['test.key']) == 1, len(
self.bus.subscriptions['test.key'])
def test_unsubscribe_all_is_chainable(self):
bus = self.bus.unsubscribe_all('test.key')
assert bus == self.bus
def test_unsubscribe_all(self):
self.bus.subscribe('test.key', self.callback)
self.bus.subscribe('test.key', lambda obj: obj)
self.bus.unsubscribe_all('test.key')
assert len(self.bus.subscriptions['test.key']) == 0, len(
self.bus.subscriptions['test.key'])
def test_has_subscription(self):
self.bus.subscribe('test.key', self.callback)
assert self.bus.has_subscription('test.key', self.callback)
self.bus.unsubscribe('test.key', self.callback)
assert not self.bus.has_subscription('test.key', self.callback)
def test_does_not_have_subscription_for_invalid_key(self):
assert not self.bus.has_subscription('test.key', self.callback)
def test_does_not_have_subscription_for_invalid_calback(self):
self.bus.subscribe('test.key', self.callback)
assert not self.bus.has_subscription('test.key', lambda obj: obj)
def test_has_any_subscriptions_for_invalid_key(self):
assert not self.bus.has_any_subscriptions('test.key')
def test_has_any_subscriptions(self):
self.bus.subscribe('test.key', self.callback)
assert self.bus.has_any_subscriptions('test.key')
self.bus.unsubscribe('test.key', self.callback)
assert not self.bus.has_any_subscriptions('test.key')
def test_can_publish(self):
self.bus.subscribe('test.key', self.callback)
self.bus.publish('test.key', argument="something")
assert self.has_run
assert self.argument == "something"
assert self.called_bus == self.bus
def test_can_publish_with_noone_listening(self):
self.bus.publish('test.key', something="whatever")
def test_publish_is_chainable(self):
bus = self.bus.publish('test.key', something="whatever")
assert bus == self.bus
def test_subscribing_to_different_keys(self):
self.bus.subscribe('test.key', self.callback)
self.bus.subscribe('test.key2', self.callback)
self.bus.subscribe('test.key3', self.callback)
assert 'test.key' in self.bus.subscriptions
assert 'test.key2' in self.bus.subscriptions
assert 'test.key3' in self.bus.subscriptions
assert self.bus.subscriptions['test.key']
assert self.bus.subscriptions['test.key2']
assert self.bus.subscriptions['test.key3']
def test_can_reset_bus(self):
self.bus.subscribe('test.key', self.callback)
self.bus.subscribe('test.key2', self.callback)
self.bus.subscribe('test.key3', self.callback)
self.bus.reset()
assert 'test.key' not in self.bus.subscriptions
assert 'test.key2' not in self.bus.subscriptions
assert 'test.key3' not in self.bus.subscriptions
class AeroApp(tornado.web.Application):
def __init__(self, handlers=[], **settings):
handlers = list(handlers)
self.bus = Bus()
self.apps = []
if not settings:
settings = {}
if "installed_apps" in settings:
apps = settings["installed_apps"]
for app_module_name in apps:
self.apps.append(self.__load_app(app_module_name))
for app in self.apps:
for url in app["urls"]:
handlers.append(url)
if "template_path" in settings:
self.loader = AppTemplateLoader(self, settings["template_path"])
else:
self.loader = AppTemplateLoader(self)
settings["template_loader"] = self.loader
handlers.append(
(
r"/static/(.*)",
AeroStaticFileHandler,
{"path": "static_path" in settings and settings["static_path"] or None, "apps": self.apps},
)
)
if "static_path" in settings:
settings.pop("static_path")
for app in self.apps:
if not app["has_listeners"]:
continue
if hasattr(app["listeners"], "listen"):
app["listeners"].listen(self)
super(AeroApp, self).__init__(handlers, **settings)
self.publish("app_started", app=self)
def subscribe(self, key, callback, force=False):
return self.bus.subscribe(key, callback, force)
def publish(self, key, *args, **kwargs):
return self.bus.publish(key, *args, **kwargs)
def importable(self, module):
try:
__import__(module)
return True
except ImportError:
return False
def __load_app(self, app_name):
try:
module = reduce(getattr, app_name.split(".")[1:], __import__(app_name))
except ImportError, err:
print "Could not import app %s! Error:" % app_name
raise err
app_path = abspath(dirname(module.__file__))
urls = []
urls_module = None
urls_app_name = "%s.urls" % app_name
if self.importable(urls_app_name):
urls_module = reduce(getattr, urls_app_name.split(".")[1:], __import__(urls_app_name))
if hasattr(urls_module, "urls"):
for url in urls_module.urls:
urls.append(url)
listeners_module = None
listeners_module_name = "%s.listeners" % app_name
if self.importable(listeners_module_name):
listeners_module = reduce(getattr, listeners_module_name.split(".")[1:], __import__(listeners_module_name))
template_path = abspath(join(dirname(module.__file__), "templates"))
has_templates = exists(template_path)
static_path = abspath(join(dirname(module.__file__), "static"))
has_static = exists(static_path)
return {
"name": app_name,
"module": module,
"path": app_path,
"urls_module": urls_module,
"urls": urls,
"has_listeners": listeners_module is not None,
"listeners": listeners_module,
"has_templates": has_templates,
"template_path": template_path,
"has_static": has_static,
"static_path": static_path,
}