def subscribe(
observer: abc.ObserverBase[int],
scheduler_: Optional[abc.SchedulerBase] = None
) -> abc.DisposableBase:
_scheduler = scheduler or scheduler_ or TimeoutScheduler.singleton()
nonlocal duetime
if not isinstance(duetime, datetime):
duetime = _scheduler.now + _scheduler.to_timedelta(duetime)
p = max(0.0, _scheduler.to_seconds(period))
mad = MultipleAssignmentDisposable()
dt = duetime
count = 0
def action(scheduler: abc.SchedulerBase, state: Any) -> None:
nonlocal dt
nonlocal count
if p > 0.0:
now = scheduler.now
dt = dt + scheduler.to_timedelta(p)
if dt <= now:
dt = now + scheduler.to_timedelta(p)
observer.on_next(count)
count += 1
mad.disposable = scheduler.schedule_absolute(dt, action)
mad.disposable = _scheduler.schedule_absolute(dt, action)
return mad
def subscribe(
observer: abc.ObserverBase[_T],
scheduler_: Optional[abc.SchedulerBase] = None,
) -> abc.DisposableBase:
_scheduler = scheduler or scheduler_ or TimeoutScheduler.singleton(
)
duration = _scheduler.to_timedelta(window_duration or 0.0)
if duration <= _scheduler.to_timedelta(0):
raise ValueError(
"window_duration cannot be less or equal zero.")
last_on_next: Optional[datetime] = None
def on_next(x: _T) -> None:
nonlocal last_on_next
emit = False
now = _scheduler.now
with source.lock:
if not last_on_next or now - last_on_next >= duration:
last_on_next = now
emit = True
if emit:
observer.on_next(x)
return source.subscribe(on_next,
observer.on_error,
observer.on_completed,
scheduler=_scheduler)
def subscribe(
observer: abc.ObserverBase[_T],
scheduler_: Optional[abc.SchedulerBase] = None,
) -> abc.DisposableBase:
nonlocal duration
_scheduler: abc.SchedulerBase = (scheduler or scheduler_
or TimeoutScheduler.singleton())
duration = _scheduler.to_timedelta(duration)
q: List[Dict[str, Any]] = []
def on_next(x: _T) -> None:
now = _scheduler.now
q.append({"interval": now, "value": x})
while q and now - q[0]["interval"] >= duration:
observer.on_next(q.pop(0)["value"])
def on_completed() -> None:
now = _scheduler.now
while q and now - q[0]["interval"] >= duration:
observer.on_next(q.pop(0)["value"])
observer.on_completed()
return source.subscribe(on_next,
observer.on_error,
on_completed,
scheduler=_scheduler)
def factory(scheduler_: Optional[abc.SchedulerBase] = None):
_scheduler = scheduler or scheduler_ or TimeoutScheduler.singleton(
)
def mapper(value: _T) -> Timestamp[_T]:
return Timestamp(value=value, timestamp=_scheduler.now)
return source.pipe(operators.map(mapper))
def subscribe(
observer: abc.ObserverBase[_T],
scheduler_: Optional[abc.SchedulerBase] = None,
) -> abc.DisposableBase:
_scheduler = scheduler or scheduler_ or TimeoutScheduler.singleton(
)
switched = [False]
_id = [0]
original = SingleAssignmentDisposable()
subscription = SerialDisposable()
timer = SerialDisposable()
subscription.disposable = original
def create_timer() -> None:
my_id = _id[0]
def action(scheduler: abc.SchedulerBase, state: Any = None):
switched[0] = _id[0] == my_id
timer_wins = switched[0]
if timer_wins:
subscription.disposable = obs.subscribe(
observer, scheduler=scheduler)
if isinstance(duetime, datetime):
timer.disposable = _scheduler.schedule_absolute(
duetime, action)
else:
timer.disposable = _scheduler.schedule_relative(
duetime, action)
create_timer()
def on_next(value: _T) -> None:
send_wins = not switched[0]
if send_wins:
_id[0] += 1
observer.on_next(value)
create_timer()
def on_error(error: Exception) -> None:
on_error_wins = not switched[0]
if on_error_wins:
_id[0] += 1
observer.on_error(error)
def on_completed() -> None:
on_completed_wins = not switched[0]
if on_completed_wins:
_id[0] += 1
observer.on_completed()
original.disposable = source.subscribe(on_next,
on_error,
on_completed,
scheduler=scheduler_)
return CompositeDisposable(subscription, timer)
def test_timeout_extend(self):
class MyScheduler(TimeoutScheduler):
pass
scheduler = [
MyScheduler(),
MyScheduler.singleton(),
TimeoutScheduler.singleton(),
]
assert scheduler[0] is scheduler[1]
assert scheduler[0] is not scheduler[2]
def subscribe(
observer: abc.ObserverBase[int],
scheduler_: Optional[abc.SchedulerBase] = None
) -> abc.DisposableBase:
_scheduler: abc.SchedulerBase = (scheduler or scheduler_
or TimeoutScheduler.singleton())
def action(scheduler: abc.SchedulerBase, state: Any) -> None:
observer.on_next(0)
observer.on_completed()
return _scheduler.schedule_absolute(duetime, action)
def subscribe(
observer: abc.ObserverBase[_T],
scheduler_: Optional[abc.SchedulerBase] = None,
) -> abc.DisposableBase:
_scheduler = scheduler or scheduler_ or TimeoutScheduler.singleton()
def action(scheduler: abc.SchedulerBase, state: Any = None):
observer.on_completed()
disp = _scheduler.schedule_relative(duration, action)
return CompositeDisposable(
disp, source.subscribe(observer, scheduler=scheduler_)
)
def subscribe(
observer: abc.ObserverBase[int],
scheduler_: Optional[abc.SchedulerBase] = None
) -> abc.DisposableBase:
_scheduler = scheduler or scheduler_ or TimeoutScheduler.singleton()
d = _scheduler.to_seconds(duetime)
def action(scheduler: abc.SchedulerBase, state: Any) -> None:
observer.on_next(0)
observer.on_completed()
if d <= 0.0:
return _scheduler.schedule(action)
return _scheduler.schedule_relative(d, action)
def subscribe(
observer: abc.ObserverBase[int],
scheduler_: Optional[abc.SchedulerBase] = None,
) -> abc.DisposableBase:
_scheduler: abc.SchedulerBase = (scheduler or scheduler_
or TimeoutScheduler.singleton())
def action(count: Optional[int] = None) -> Optional[int]:
if count is not None:
observer.on_next(count)
return count + 1
return None
if not isinstance(_scheduler, PeriodicScheduler):
raise ValueError("Sceduler must be PeriodicScheduler")
return _scheduler.schedule_periodic(period, action, state=0)
def subscribe(
observer: abc.ObserverBase[_T],
scheduler_: Optional[abc.SchedulerBase] = None,
) -> abc.DisposableBase:
_scheduler = scheduler or scheduler_ or TimeoutScheduler.singleton(
)
cancelable = SerialDisposable()
has_value = [False]
value: List[_T] = [cast(_T, None)]
_id: List[int] = [0]
def on_next(x: _T) -> None:
has_value[0] = True
value[0] = x
_id[0] += 1
current_id = _id[0]
d = SingleAssignmentDisposable()
cancelable.disposable = d
def action(scheduler: abc.SchedulerBase,
state: Any = None) -> None:
if has_value[0] and _id[0] == current_id:
observer.on_next(value[0])
has_value[0] = False
d.disposable = _scheduler.schedule_relative(duetime, action)
def on_error(exception: Exception) -> None:
cancelable.dispose()
observer.on_error(exception)
has_value[0] = False
_id[0] += 1
def on_completed() -> None:
cancelable.dispose()
if has_value[0]:
observer.on_next(value[0])
observer.on_completed()
has_value[0] = False
_id[0] += 1
subscription = source.subscribe(on_next,
on_error,
on_completed,
scheduler=scheduler_)
return CompositeDisposable(subscription, cancelable)
def subscribe(
observer: abc.ObserverBase[_TState],
scheduler: Optional[abc.SchedulerBase] = None,
) -> abc.DisposableBase:
scheduler = scheduler or TimeoutScheduler.singleton()
mad = MultipleAssignmentDisposable()
state = initial_state
has_result = False
result: _TState = cast(_TState, None)
first = True
time: Optional[RelativeTime] = None
def action(scheduler: abc.SchedulerBase, _: Any) -> None:
nonlocal state
nonlocal has_result
nonlocal result
nonlocal first
nonlocal time
if has_result:
observer.on_next(result)
try:
if first:
first = False
else:
state = iterate(state)
has_result = condition(state)
if has_result:
result = state
time = time_mapper(state)
except Exception as e: # pylint: disable=broad-except
observer.on_error(e)
return
if has_result:
assert time
mad.disposable = scheduler.schedule_relative(time, action)
else:
observer.on_completed()
mad.disposable = scheduler.schedule_relative(0, action)
return mad
def subscribe(
observer: abc.ObserverBase[_T],
scheduler_: Optional[abc.SchedulerBase] = None,
) -> abc.DisposableBase:
_scheduler = scheduler or scheduler_ or TimeoutScheduler.singleton(
)
def action(scheduler: abc.SchedulerBase, state: Any = None):
observer.on_completed()
if isinstance(end_time, datetime):
task = _scheduler.schedule_absolute(end_time, action)
else:
task = _scheduler.schedule_relative(end_time, action)
return CompositeDisposable(
task, source.subscribe(observer, scheduler=scheduler_))
def subscribe(
observer: abc.ObserverBase[TimeInterval[_T]],
scheduler_: Optional[abc.SchedulerBase] = None,
) -> abc.DisposableBase:
_scheduler = scheduler or scheduler_ or TimeoutScheduler.singleton(
)
last = _scheduler.now
def mapper(value: _T) -> TimeInterval[_T]:
nonlocal last
now = _scheduler.now
span = now - last
last = now
return TimeInterval(value=value, interval=span)
return source.pipe(ops.map(mapper)).subscribe(observer,
scheduler=_scheduler)
def test_timeout_singleton(self):
scheduler = [TimeoutScheduler(), TimeoutScheduler.singleton()]
assert scheduler[0] is scheduler[1]
gate = [threading.Semaphore(0), threading.Semaphore(0)]
scheduler = [None, None]
def run(idx):
scheduler[idx] = TimeoutScheduler()
gate[idx].release()
for idx in (0, 1):
threading.Thread(target=run, args=(idx, )).start()
gate[idx].acquire()
assert scheduler[0] is not None
assert scheduler[1] is not None
assert scheduler[0] is scheduler[1]
def to_async_(
func: Callable[..., _T],
scheduler: Optional[abc.SchedulerBase] = None
) -> Callable[..., Observable[_T]]:
"""Converts the function into an asynchronous function. Each
invocation of the resulting asynchronous function causes an
invocation of the original synchronous function on the specified
scheduler.
Examples:
res = reactivex.to_async(lambda x, y: x + y)(4, 3)
res = reactivex.to_async(lambda x, y: x + y, Scheduler.timeout)(4, 3)
res = reactivex.to_async(lambda x: log.debug(x), Scheduler.timeout)('hello')
Args:
func: Function to convert to an asynchronous function.
scheduler: [Optional] Scheduler to run the function on. If not
specified, defaults to Scheduler.timeout.
Returns:
Aynchronous function.
"""
_scheduler = scheduler or TimeoutScheduler.singleton()
def wrapper(*args: Any) -> Observable[_T]:
subject: AsyncSubject[_T] = AsyncSubject()
def action(scheduler: abc.SchedulerBase, state: Any = None) -> None:
try:
result = func(*args)
except Exception as ex: # pylint: disable=broad-except
subject.on_error(ex)
return
subject.on_next(result)
subject.on_completed()
_scheduler.schedule(action)
return subject.pipe(ops.as_observable())
return wrapper
def subscribe(
observer: abc.ObserverBase[_T],
scheduler_: Optional[abc.SchedulerBase] = None,
):
_scheduler = scheduler or scheduler_ or TimeoutScheduler.singleton()
open = [False]
def action(scheduler: abc.SchedulerBase, state: Any) -> None:
open[0] = True
t = _scheduler.schedule_relative(duration, action)
def on_next(x: _T):
if open[0]:
observer.on_next(x)
d = source.subscribe(
on_next, observer.on_error, observer.on_completed, scheduler=scheduler_
)
return CompositeDisposable(t, d)
def subscribe(
observer: abc.ObserverBase[_T],
scheduler_: Optional[abc.SchedulerBase] = None,
):
_scheduler = scheduler or scheduler_ or TimeoutScheduler.singleton(
)
open = [False]
def on_next(x: _T) -> None:
if open[0]:
observer.on_next(x)
subscription = source.subscribe(on_next,
observer.on_error,
observer.on_completed,
scheduler=scheduler_)
def action(scheduler: abc.SchedulerBase, state: Any):
open[0] = True
disp = getattr(_scheduler, scheduler_method)(start_time, action)
return CompositeDisposable(disp, subscription)
def subscribe(observer: abc.ObserverBase[_T],
scheduler_: Optional[abc.SchedulerBase] = None):
nonlocal duetime
_scheduler = scheduler or scheduler_ or TimeoutScheduler.singleton()
if isinstance(duetime, datetime):
duetime_ = _scheduler.to_datetime(duetime) - _scheduler.now
else:
duetime_ = _scheduler.to_timedelta(duetime)
cancelable = SerialDisposable()
exception: Optional[Exception] = None
active = [False]
running = [False]
queue: List[Timestamp[Notification[_T]]] = []
def on_next(notification: Timestamp[Notification[_T]]) -> None:
nonlocal exception
should_run = False
with source.lock:
if isinstance(notification.value, OnError):
del queue[:]
queue.append(notification)
exception = notification.value.exception
should_run = not running[0]
else:
queue.append(
Timestamp(
value=notification.value,
timestamp=notification.timestamp + duetime_,
))
should_run = not active[0]
active[0] = True
if should_run:
if exception:
observer.on_error(exception)
else:
mad = MultipleAssignmentDisposable()
cancelable.disposable = mad
def action(scheduler: abc.SchedulerBase,
state: Any = None):
if exception:
return
with source.lock:
running[0] = True
while True:
result = None
if queue and queue[
0].timestamp <= scheduler.now:
result = queue.pop(0).value
if result:
result.accept(observer)
if not result:
break
should_continue = False
recurse_duetime: typing.RelativeTime = 0
if queue:
should_continue = True
diff = queue[0].timestamp - scheduler.now
recurse_duetime = max(DELTA_ZERO, diff)
else:
active[0] = False
ex = exception
running[0] = False
if ex:
observer.on_error(ex)
elif should_continue:
mad.disposable = scheduler.schedule_relative(
recurse_duetime, action)
mad.disposable = _scheduler.schedule_relative(
duetime_, action)
subscription = source.pipe(
ops.materialize(),
ops.timestamp(),
).subscribe(on_next, scheduler=_scheduler)
return CompositeDisposable(subscription, cancelable)
def subscribe(
observer: abc.ObserverBase[Observable[_T]],
scheduler_: Optional[abc.SchedulerBase] = None,
) -> abc.DisposableBase:
_scheduler = scheduler or scheduler_ or TimeoutScheduler.singleton(
)
n: int = 0
s: Subject[_T] = Subject()
timer_d = SerialDisposable()
window_id = 0
group_disposable = CompositeDisposable(timer_d)
ref_count_disposable = RefCountDisposable(group_disposable)
def create_timer(_id: int):
nonlocal n, s, window_id
m = SingleAssignmentDisposable()
timer_d.disposable = m
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)
m.disposable = _scheduler.schedule_relative(timespan, action)
observer.on_next(add_ref(s, ref_count_disposable))
create_timer(0)
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 on_error(e: Exception) -> None:
s.on_error(e)
observer.on_error(e)
def on_completed() -> None:
s.on_completed()
observer.on_completed()
group_disposable.add(
source.subscribe(on_next,
on_error,
on_completed,
scheduler=scheduler_))
return ref_count_disposable
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