def handle_websocket():
wsock = request.environ.get("wsgi.websocket")
if not wsock:
abort(400, "Expected WebSocket request.")
stream = Subject()
query = (
stream.map(lambda x: x["term"]).filter(lambda text: len(
text) > 2) # Only if text is longer than 2 characters
.debounce(0.750, scheduler=scheduler) # Pause for 750ms
.distinct_until_changed()) # Only if the value has changed
searcher = query.flat_map_latest(lambda term: WikiFinder(term))
def send_response(x):
wsock.on_next(x)
def on_error(ex):
print(ex)
searcher.subscribe(send_response, on_error)
while True:
try:
message = wsock.receive()
# like {'term': '<current textbox val>'}
obj = json.loads(message)
stream.on_next(obj)
except WebSocketError:
break
def __init__(self):
QWidget.__init__(self)
self.setWindowTitle("Rx for Python rocks")
self.resize(600, 600)
self.setMouseTracking(True)
# This Subject is used to transmit mouse moves to labels
self.mousemove = Subject()
def __init__(self):
super().__init__()
self.resize(600, 600)
self.add_events(Gdk.EventMask.POINTER_MOTION_MASK)
self.connect("motion-notify-event", self.on_mouse_move)
self.mousemove = Subject()
def __init__(self):
super(Frame, self).__init__(None)
self.SetTitle("Rx for Python rocks")
self.SetSize((600, 600))
# This Subject is used to transmit mouse moves to labels
self.mousemove = Subject()
self.Bind(wx.EVT_MOTION, self.OnMotion)
def __init__(self) -> None:
self._subject = Subject()
self._scheduler = ThreadPoolScheduler(max_workers=1)
obs = self._subject.pipe(ops.observe_on(self._scheduler))
self._disposable = obs \
.pipe(ops.window_with_time_or_count(count=5, timespan=datetime.timedelta(milliseconds=10_000)),
ops.flat_map(lambda x: self._window_to_group(x)),
ops.map(mapper=lambda x: self._retryable(data=x, delay=self._jitter_delay(jitter_interval=1000))),
ops.merge_all()) \
.subscribe(self._result, self._error, self._on_complete)
pass
class Window(QWidget):
def __init__(self):
QWidget.__init__(self)
self.setWindowTitle("Rx for Python rocks")
self.resize(600, 600)
self.setMouseTracking(True)
# This Subject is used to transmit mouse moves to labels
self.mousemove = Subject()
def mouseMoveEvent(self, event):
self.mousemove.on_next((event.x(), event.y()))
class Window(Gtk.Window):
def __init__(self):
super().__init__()
self.resize(600, 600)
self.add_events(Gdk.EventMask.POINTER_MOTION_MASK)
self.connect("motion-notify-event", self.on_mouse_move)
self.mousemove = Subject()
def on_mouse_move(self, widget, event):
self.mousemove.on_next((event.x, event.y))
def action(scheduler: abc.SchedulerBase, state: Any = None):
s: Optional[Subject[_T]] = None
if is_shift:
s = Subject()
queue.append(s)
observer.on_next(add_ref(s, ref_count_disposable))
if is_span:
s = queue.pop(0)
s.on_completed()
create_timer()
class Frame(wx.Frame):
def __init__(self):
super(Frame, self).__init__(None)
self.SetTitle("Rx for Python rocks")
self.SetSize((600, 600))
# This Subject is used to transmit mouse moves to labels
self.mousemove = Subject()
self.Bind(wx.EVT_MOTION, self.OnMotion)
def OnMotion(self, event):
self.mousemove.on_next((event.GetX(), event.GetY()))
def publish_(
mapper: Optional[Mapper[Observable[_TSource], Observable[_TResult]]] = None,
) -> Callable[
[Observable[_TSource]], Union[Observable[_TResult], ConnectableObservable[_TSource]]
]:
"""Returns an observable sequence that is the result of invoking the
mapper on a connectable observable sequence that shares a single
subscription to the underlying sequence. This operator is a
specialization of Multicast using a regular Subject.
Example:
>>> res = publish()
>>> res = publish(lambda x: x)
mapper: [Optional] Selector function which can use the
multicasted source sequence as many times as needed, without causing
multiple subscriptions to the source sequence. Subscribers to the
given source will receive all notifications of the source from the
time of the subscription on.
Returns:
An observable sequence that contains the elements of a sequence
produced by multicasting the source sequence within a mapper
function.
"""
if mapper:
def factory(scheduler: Optional[abc.SchedulerBase] = None) -> Subject[_TSource]:
return Subject()
return ops.multicast(subject_factory=factory, mapper=mapper)
subject: Subject[_TSource] = Subject()
return ops.multicast(subject=subject)
def open(self):
scheduler = AsyncIOScheduler(asyncio.get_event_loop())
print("WebSocket opened")
# A Subject is both an observable and observer, so we can both subscribe
# to it and also feed (send) it with new values
self.subject: Subject[Dict[str, str]] = Subject()
# Get all distinct key up events from the input and only fire if long enough and distinct
searcher = self.subject.pipe(
ops.map(lambda x: x["term"]),
ops.filter(lambda text: len(text) > 2
), # Only if the text is longer than 2 characters
ops.debounce(0.750), # Pause for 750ms
ops.distinct_until_changed(), # Only if the value has changed
ops.flat_map_latest(search_wikipedia),
)
def send_response(x: HTTPResponse) -> None:
self.write_message(x.body)
def on_error(ex: Exception):
print(ex)
searcher.subscribe(on_next=send_response,
on_error=on_error,
scheduler=scheduler)
async def test_flat_map():
x: Subject[int] = Subject()
x.pipe(ops.flat_map(mapper)).subscribe(on_next,
on_error,
scheduler=scheduler)
x.on_next(10)
await asyncio.sleep(0.1)
def main() -> None:
root = Tk()
root.title("Rx for Python rocks")
scheduler = TkinterScheduler(root)
mousemoves: Subject[Event[Any]] = Subject()
frame = Frame(root, width=600, height=600)
frame.bind("<Motion>", mousemoves.on_next)
text = "TIME FLIES LIKE AN ARROW"
def on_next(info: Tuple[tkinter.Label, "Event[Frame]", int]) -> None:
label, ev, i = info
label.place(x=ev.x + i * 12 + 15, y=ev.y)
def label2stream(
label: tkinter.Label, index: int
) -> Observable[Tuple[tkinter.Label, "Event[Frame]", int]]:
return mousemoves.pipe(
ops.map(lambda ev: (label, ev, index)),
ops.delay(index * 0.1),
)
def char2label(char: str) -> Label:
return Label(frame, text=char, borderwidth=0, padx=0, pady=0)
reactivex.from_(text).pipe(
ops.map(char2label),
ops.flat_map_indexed(label2stream),
).subscribe(on_next, on_error=print, scheduler=scheduler)
frame.pack()
root.mainloop()
def test_multicast_hot_4(self):
c = [None]
d1 = [None]
d2 = [None]
ex = "ex"
scheduler = TestScheduler()
xs = scheduler.create_hot_observable(
on_next(40, 0),
on_next(90, 1),
on_next(150, 2),
on_next(210, 3),
on_next(240, 4),
on_next(270, 5),
on_next(330, 6),
on_next(340, 7),
on_error(390, ex),
)
s = Subject()
o = scheduler.create_observer()
def action0(scheduler: abc.SchedulerBase, state: Any = None):
c[0] = xs.pipe(ops.multicast(s))
scheduler.schedule_absolute(50, action0)
def action1(scheduler: abc.SchedulerBase, state: Any = None):
d2[0] = c[0].connect(scheduler)
scheduler.schedule_absolute(100, action1)
def action2(scheduler: abc.SchedulerBase, state: Any = None):
d1[0] = c[0].subscribe(o, scheduler)
scheduler.schedule_absolute(200, action2)
def action3(scheduler: abc.SchedulerBase, state: Any = None):
d2[0].dispose()
scheduler.schedule_absolute(300, action3)
def action4(scheduler: abc.SchedulerBase, state: Any = None):
d2[0] = c[0].connect(scheduler)
scheduler.schedule_absolute(335, action4)
scheduler.start()
assert o.messages == [
on_next(210, 3),
on_next(240, 4),
on_next(270, 5),
on_next(340, 7),
on_error(390, ex),
]
assert xs.subscriptions == [subscribe(100, 300), subscribe(335, 390)]
def action(scheduler: abc.SchedulerBase, state: Any = None):
nonlocal n, s, window_id
if _id != window_id:
return
n = 0
window_id += 1
new_id = window_id
s.on_completed()
s = Subject()
observer.on_next(add_ref(s, ref_count_disposable))
create_timer(new_id)
def on_next_left(value: _TLeft) -> None:
subject: Subject[_TRight] = Subject()
with left.lock:
_id = left_id[0]
left_id[0] += 1
left_map[_id] = subject
try:
result = (value, add_ref(subject, rcd))
except Exception as e:
log.error("*** Exception: %s" % e)
for left_value in left_map.values():
left_value.on_error(e)
observer.on_error(e)
return
observer.on_next(result)
for right_value in right_map.values():
subject.on_next(right_value)
md = SingleAssignmentDisposable()
group.add(md)
def expire():
if _id in left_map:
del left_map[_id]
subject.on_completed()
group.remove(md)
try:
duration = left_duration_mapper(value)
except Exception as e:
for left_value in left_map.values():
left_value.on_error(e)
observer.on_error(e)
return
def on_error(error: Exception) -> Any:
for left_value in left_map.values():
left_value.on_error(error)
observer.on_error(error)
md.disposable = duration.pipe(ops.take(1)).subscribe(
nothing, on_error, expire, scheduler=scheduler)
def test_connectable_observable_creation(self):
y = [0]
s2 = Subject()
co2 = ConnectableObservable(reactivex.return_value(1), s2)
def on_next(x):
y[0] = x
co2.subscribe(on_next=on_next)
self.assertNotEqual(1, y[0])
co2.connect()
self.assertEqual(1, y[0])
def test_multicast_hot_1(self):
scheduler = TestScheduler()
s: Subject[int] = Subject()
xs = scheduler.create_hot_observable(
on_next(40, 0),
on_next(90, 1),
on_next(150, 2),
on_next(210, 3),
on_next(240, 4),
on_next(270, 5),
on_next(330, 6),
on_next(340, 7),
on_completed(390),
)
obv = scheduler.create_observer()
d1: List[Optional[abc.DisposableBase]] = [None]
d2: List[Optional[abc.DisposableBase]] = [None]
c: List[Optional[ConnectableObservable[int]]] = [None]
def action(scheduler: abc.SchedulerBase, state: Any = None):
c[0] = xs.pipe(ops.multicast(s))
scheduler.schedule_absolute(50, action)
def action0(scheduler: abc.SchedulerBase, state: Any = None):
assert c[0]
d1[0] = c[0].subscribe(obv, scheduler=scheduler)
scheduler.schedule_absolute(100, action0)
def action1(scheduler: abc.SchedulerBase, state: Any = None):
assert c[0]
d2[0] = c[0].connect(scheduler)
scheduler.schedule_absolute(200, action1)
def action2(scheduler: abc.SchedulerBase, state: Any = None):
assert d1[0]
d1[0].dispose()
scheduler.schedule_absolute(300, action2)
scheduler.start()
assert obv.messages == [on_next(210, 3), on_next(240, 4), on_next(270, 5)]
assert xs.subscriptions == [subscribe(200, 390)]
def subscribe(
observer: abc.ObserverBase[Observable[_T]],
scheduler: Optional[abc.SchedulerBase] = None,
):
m = SerialDisposable()
d = CompositeDisposable(m)
r = RefCountDisposable(d)
window: Subject[_T] = Subject()
observer.on_next(add_ref(window, r))
def on_next(value: _T) -> None:
window.on_next(value)
def on_error(error: Exception) -> None:
window.on_error(error)
observer.on_error(error)
def on_completed() -> None:
window.on_completed()
observer.on_completed()
d.add(
source.subscribe(on_next,
on_error,
on_completed,
scheduler=scheduler))
def create_window_on_completed():
try:
window_close = closing_mapper()
except Exception as exception:
observer.on_error(exception)
return
def on_completed():
nonlocal window
window.on_completed()
window = Subject()
observer.on_next(add_ref(window, r))
create_window_on_completed()
m1 = SingleAssignmentDisposable()
m.disposable = m1
m1.disposable = window_close.pipe(ops.take(1)).subscribe(
noop, on_error, on_completed, scheduler=scheduler)
create_window_on_completed()
return r
def test_dispose_on_cancel(self):
loop = asyncio.get_event_loop()
sub = Subject()
async def using_sub():
# Since the subject never completes, this await statement
# will never be complete either. We wait forever.
await reactivex.using(lambda: sub, lambda s: s)
async def go():
await asyncio.wait_for(using_sub(), 0.1)
self.assertRaises(asyncio.TimeoutError, loop.run_until_complete, go())
# When we cancel the future (due to the time-out), the future
# automatically disposes the underlying subject.
self.assertTrue(sub.is_disposed)
def on_next(x: _T) -> None:
nonlocal n, s, window_id
new_window = False
new_id = 0
s.on_next(x)
n += 1
if n == count:
new_window = True
n = 0
window_id += 1
new_id = window_id
s.on_completed()
s = Subject()
observer.on_next(add_ref(s, ref_count_disposable))
if new_window:
create_timer(new_id)
def open(self):
print("WebSocket opened")
# A Subject is both an observable and observer, so we can both subscribe
# to it and also feed (on_next) it with new values
self.subject: Subject[Dict[str, int]] = Subject()
# Now we take on our magic glasses and project the stream of bytes into
# a ...
query = self.subject.pipe(
# 1. stream of keycodes
ops.map(lambda obj: obj["keycode"]),
# 2. stream of windows (10 ints long)
ops.window_with_count(10, 1),
# 3. stream of booleans, True or False
ops.flat_map(lambda win: win.pipe(ops.sequence_equal(codes))),
# 4. stream of Trues
ops.filter(lambda equal: equal),
)
# 4. we then subscribe to the Trues, and signal Konami! if we see any
query.subscribe(on_next=lambda x: self.write_message("Konami!"))
def subscribe(
observer: abc.ObserverBase[Observable[_T]],
scheduler: Optional[abc.SchedulerBase] = None,
) -> abc.DisposableBase:
window_subject: Subject[_T] = Subject()
d = CompositeDisposable()
r = RefCountDisposable(d)
observer.on_next(add_ref(window_subject, r))
def on_next_window(x: _T) -> None:
window_subject.on_next(x)
def on_error(err: Exception) -> None:
window_subject.on_error(err)
observer.on_error(err)
def on_completed() -> None:
window_subject.on_completed()
observer.on_completed()
d.add(
source.subscribe(on_next_window,
on_error,
on_completed,
scheduler=scheduler))
def on_next_observer(w: Observable[_T]):
nonlocal window_subject
window_subject.on_completed()
window_subject = Subject()
observer.on_next(add_ref(window_subject, r))
d.add(
boundaries.subscribe(on_next_observer,
on_error,
on_completed,
scheduler=scheduler))
return r
class _RxWriter(object):
success_count = 0
failed_count = 0
raise_retry_exception = 0
def __init__(self) -> None:
self._subject = Subject()
self._scheduler = ThreadPoolScheduler(max_workers=1)
obs = self._subject.pipe(ops.observe_on(self._scheduler))
self._disposable = obs \
.pipe(ops.window_with_time_or_count(count=5, timespan=datetime.timedelta(milliseconds=10_000)),
ops.flat_map(lambda x: self._window_to_group(x)),
ops.map(mapper=lambda x: self._retryable(data=x, delay=self._jitter_delay(jitter_interval=1000))),
ops.merge_all()) \
.subscribe(self._result, self._error, self._on_complete)
pass
def close(self):
self.__del__()
def __del__(self):
if self._subject:
self._subject.on_completed()
self._subject.dispose()
self._subject = None
while not self._disposable.is_disposed:
time.sleep(0.1)
if self._disposable:
self._disposable = None
pass
def _window_to_group(self, value):
return value.pipe(
ops.to_iterable(),
ops.map(
lambda x: rx.from_iterable(x).pipe(ops.group_by(
_group_by), ops.map(_group_to_batch), ops.merge_all())),
ops.merge_all())
def _retryable(self, data: str, delay: datetime.timedelta):
return rx.of(data).pipe(
ops.delay(duetime=delay, scheduler=self._scheduler),
ops.map(lambda x: self._http(x)),
ops.catch(handler=lambda exception, source: self._retry_handler(
exception, source, data)),
)
def _http(self, data: str):
if "gamma" in data:
print('bad request[{}]: {}'.format(current_thread().name, data))
raise Exception('unexpected token: {}'.format(data))
pass
if "alpha" in data:
if self.raise_retry_exception < 2:
self.raise_retry_exception += 1
print(
'server is temporarily unavailable to accept writes[{}]: {}'
.format(current_thread().name, data))
raise Exception(
'server is temporarily unavailable to accept writes: {}'.
format(data))
else:
print("server is OK: {}".format(datetime.datetime.now()))
pass
print("http[" + current_thread().name + "]: " + data)
return _Notification(data=data)
def write(self, data: str):
print("write[" + current_thread().name + "]")
self._subject.on_next(data)
pass
def _result(self, data: _Notification):
print("result[" + current_thread().name + "]: " + str(data))
if data.exception:
self.failed_count += 1
else:
self.success_count += 1
pass
def _error(self, error):
print(error)
def _on_complete(self):
self._disposable.dispose()
print("on complete")
def _jitter_delay(self, jitter_interval=0):
_jitter = datetime.timedelta(milliseconds=random() * jitter_interval)
print('jitter: {}'.format(_jitter))
return _jitter
def _retry_handler(self, exception, source, data):
print('retry_handler: {}, source: {}'.format(exception, source))
if "server is temporarily" in str(exception):
print("RETRY!!!: {}".format(datetime.datetime.now()))
return self._retryable(data, delay=datetime.timedelta(seconds=2))
notification = _Notification(exception=exception, data=data)
return rx.just(notification)
def test_connectable_observable_multiple_non_overlapped_connections(self):
scheduler = TestScheduler()
xs = scheduler.create_hot_observable(
on_next(210, 1),
on_next(220, 2),
on_next(230, 3),
on_next(240, 4),
on_next(250, 5),
on_next(260, 6),
on_next(270, 7),
on_next(280, 8),
on_next(290, 9),
on_completed(300),
)
subject = Subject()
conn = xs.pipe(ops.multicast(subject))
c1 = [None]
def action10(scheduler, state):
c1[0] = conn.connect(scheduler)
scheduler.schedule_absolute(225, action10)
def action11(scheduler, state):
c1[0].dispose()
scheduler.schedule_absolute(241, action11)
def action12(scheduler, state):
c1[0].dispose() # idempotency test
scheduler.schedule_absolute(245, action12)
def action13(scheduler, state):
c1[0].dispose() # idempotency test
scheduler.schedule_absolute(251, action13)
def action14(scheduler, state):
c1[0].dispose() # idempotency test
scheduler.schedule_absolute(260, action14)
c2 = [None]
def action20(scheduler, state):
c2[0] = conn.connect(scheduler)
scheduler.schedule_absolute(249, action20)
def action21(scheduler, state):
c2[0].dispose()
scheduler.schedule_absolute(255, action21)
def action22(scheduler, state):
c2[0].dispose() # idempotency test
scheduler.schedule_absolute(265, action22)
def action23(scheduler, state):
c2[0].dispose() # idempotency test
scheduler.schedule_absolute(280, action23)
c3 = [None]
def action30(scheduler, state):
c3[0] = conn.connect(scheduler)
scheduler.schedule_absolute(275, action30)
def action31(scheduler, state):
c3[0].dispose()
scheduler.schedule_absolute(295, action31)
res = scheduler.start(lambda: conn)
assert res.messages == [
on_next(230, 3),
on_next(240, 4),
on_next(250, 5),
on_next(280, 8),
on_next(290, 9),
]
assert xs.subscriptions == [
subscribe(225, 241),
subscribe(249, 255),
subscribe(275, 295),
]
def main():
pygame.init()
size = 500, 500
screen = pygame.display.set_mode(size)
pygame.display.set_caption("Rx for Python rocks")
black = 0, 0, 0
background = pygame.Surface(screen.get_size())
background.fill(black) # fill the background black
background = background.convert() # prepare for faster blitting
scheduler = PyGameScheduler(pygame)
mousemove = Subject()
color = "white"
base = dirname(__file__)
files = [
join(base, img % color) for img in [
"chess_rook_%s.png",
"chess_knight_%s.png",
"chess_bishop_%s.png",
"chess_king_%s.png",
"chess_queen_%s.png",
"chess_bishop_%s.png",
"chess_knight_%s.png",
"chess_rook_%s.png",
]
]
images = [pygame.image.load(image).convert_alpha() for image in files]
old = [None] * len(images)
draw = []
erase = []
def handle_image(i, image):
imagerect = image.get_rect()
def on_next(ev):
imagerect.top = ev[1]
imagerect.left = ev[0] + i * 32
if old[i]:
erase.append(old[i])
old[i] = imagerect.copy()
draw.append((image, imagerect.copy()))
def on_error(err):
print("Got error: %s" % err)
sys.exit()
mousemove.pipe(ops.delay(0.1 * i, scheduler=scheduler)).subscribe(
on_next, on_error=on_error)
for i, image in enumerate(images):
handle_image(i, image)
while True:
for event in pygame.event.get():
if event.type == pygame.MOUSEMOTION:
pos = event.pos
mousemove.on_next(pos)
elif event.type == pygame.QUIT:
sys.exit()
if len(draw):
update = []
for rect in erase:
screen.blit(background, (rect.x, rect.y), rect)
update.append(rect)
for image, rect in draw:
screen.blit(image, rect)
update.append(rect)
pygame.display.update(update)
pygame.display.flip()
draw = []
erase = []
scheduler.run()
def action1(scheduler, state=None):
s[0] = Subject()
def group_by_until_(
key_mapper: Mapper[_T, _TKey],
element_mapper: Optional[Mapper[_T, _TValue]],
duration_mapper: Callable[[GroupedObservable[_TKey, _TValue]],
Observable[Any]],
subject_mapper: Optional[Callable[[], Subject[_TValue]]] = None,
) -> Callable[[Observable[_T]], Observable[GroupedObservable[_TKey, _TValue]]]:
"""Groups the elements of an observable sequence according to a
specified key mapper function. A duration mapper function is used
to control the lifetime of groups. When a group expires, it receives
an OnCompleted notification. When a new element with the same key
value as a reclaimed group occurs, the group will be reborn with a
new lifetime request.
Examples:
>>> group_by_until(lambda x: x.id, None, lambda : reactivex.never())
>>> group_by_until(
lambda x: x.id,lambda x: x.name, lambda grp: reactivex.never()
)
>>> group_by_until(
lambda x: x.id,
lambda x: x.name,
lambda grp: reactivex.never(),
lambda: ReplaySubject()
)
Args:
key_mapper: A function to extract the key for each element.
duration_mapper: A function to signal the expiration of a group.
subject_mapper: A function that returns a subject used to initiate
a grouped observable. Default mapper returns a Subject object.
Returns: a sequence of observable groups, each of which corresponds to
a unique key value, containing all elements that share that same key
value. If a group's lifetime expires, a new group with the same key
value can be created once an element with such a key value is
encountered.
"""
element_mapper_ = element_mapper or cast(Mapper[_T, _TValue], identity)
default_subject_mapper: Callable[[], Subject[_TValue]] = lambda: Subject()
subject_mapper_ = subject_mapper or default_subject_mapper
def group_by_until(
source: Observable[_T],
) -> Observable[GroupedObservable[_TKey, _TValue]]:
def subscribe(
observer: abc.ObserverBase[GroupedObservable[_TKey, _TValue]],
scheduler: Optional[abc.SchedulerBase] = None,
) -> abc.DisposableBase:
writers: OrderedDict[_TKey, Subject[_TValue]] = OrderedDict()
group_disposable = CompositeDisposable()
ref_count_disposable = RefCountDisposable(group_disposable)
def on_next(x: _T) -> None:
writer = None
key = None
try:
key = key_mapper(x)
except Exception as e:
for wrt in writers.values():
wrt.on_error(e)
observer.on_error(e)
return
fire_new_map_entry = False
writer = writers.get(key)
if not writer:
try:
writer = subject_mapper_()
except Exception as e:
for wrt in writers.values():
wrt.on_error(e)
observer.on_error(e)
return
writers[key] = writer
fire_new_map_entry = True
if fire_new_map_entry:
group: GroupedObservable[_TKey,
_TValue] = GroupedObservable(
key, writer,
ref_count_disposable)
duration_group: GroupedObservable[_TKey,
Any] = GroupedObservable(
key, writer)
try:
duration = duration_mapper(duration_group)
except Exception as e:
for wrt in writers.values():
wrt.on_error(e)
observer.on_error(e)
return
observer.on_next(group)
sad = SingleAssignmentDisposable()
group_disposable.add(sad)
def expire():
if writers[key]:
del writers[key]
writer.on_completed()
group_disposable.remove(sad)
def on_next(value: Any) -> None:
pass
def on_error(exn: Exception) -> None:
for wrt in writers.values():
wrt.on_error(exn)
observer.on_error(exn)
def on_completed():
expire()
sad.disposable = duration.pipe(ops.take(1)).subscribe(
on_next, on_error, on_completed, scheduler=scheduler)
try:
element = element_mapper_(x)
except Exception as error:
for wrt in writers.values():
wrt.on_error(error)
observer.on_error(error)
return
writer.on_next(element)
def on_error(ex: Exception) -> None:
for wrt in writers.values():
wrt.on_error(ex)
observer.on_error(ex)
def on_completed() -> None:
for wrt in writers.values():
wrt.on_completed()
observer.on_completed()
group_disposable.add(
source.subscribe(on_next,
on_error,
on_completed,
scheduler=scheduler))
return ref_count_disposable
return Observable(subscribe)
return group_by_until
def subject_factory(scheduler):
return Subject()
def subscribe(
observer: abc.ObserverBase[Observable[_T]],
scheduler_: Optional[abc.SchedulerBase] = None,
):
_scheduler = scheduler or scheduler_ or TimeoutScheduler.singleton(
)
timer_d = SerialDisposable()
next_shift = [timeshift]
next_span = [timespan]
total_time = [DELTA_ZERO]
queue: List[Subject[_T]] = []
group_disposable = CompositeDisposable(timer_d)
ref_count_disposable = RefCountDisposable(group_disposable)
def create_timer():
m = SingleAssignmentDisposable()
timer_d.disposable = m
is_span = False
is_shift = False
if next_span[0] == next_shift[0]:
is_span = True
is_shift = True
elif next_span[0] < next_shift[0]:
is_span = True
else:
is_shift = True
new_total_time = next_span[0] if is_span else next_shift[0]
ts = new_total_time - total_time[0]
total_time[0] = new_total_time
if is_span:
next_span[0] += timeshift
if is_shift:
next_shift[0] += timeshift
@synchronized(source.lock)
def action(scheduler: abc.SchedulerBase, state: Any = None):
s: Optional[Subject[_T]] = None
if is_shift:
s = Subject()
queue.append(s)
observer.on_next(add_ref(s, ref_count_disposable))
if is_span:
s = queue.pop(0)
s.on_completed()
create_timer()
m.disposable = _scheduler.schedule_relative(ts, action)
queue.append(Subject())
observer.on_next(add_ref(queue[0], ref_count_disposable))
create_timer()
def on_next(x: _T) -> None:
with source.lock:
for s in queue:
s.on_next(x)
@synchronized(source.lock)
def on_error(e: Exception) -> None:
for s in queue:
s.on_error(e)
observer.on_error(e)
@synchronized(source.lock)
def on_completed() -> None:
for s in queue:
s.on_completed()
observer.on_completed()
group_disposable.add(
source.subscribe(on_next,
on_error,
on_completed,
scheduler=scheduler_))
return ref_count_disposable
