def throw_exception_on_forced_to_stop(self, delay=0):
# type: (float) -> None
"""
:param delay:
:return:
"""
clz = BaseDiscoverMovies
try:
Monitor.throw_exception_if_abort_requested(timeout=delay)
if self._movie_data.restart_discovery_event.isSet():
raise RestartDiscoveryException()
except AbortException:
if clz.logger.is_trace_enabled(Trace.TRACE_PLAY_STATS):
PlayStatistics.report_play_count_stats()
reraise(*sys.exc_info())
def _do_next(self):
# type: () -> Union[dict, None]
"""
:return:
"""
clz = PlayableTrailerService
try:
while not PlayableTrailersContainer.is_any_trailers_available_to_play(
):
self.throw_exception_on_forced_to_stop(movie_data=None,
delay=0.25)
except Exception as e:
self.logger.exception('')
total_number_of_trailers = 0
start_time = datetime.datetime.now()
# Considered locking all TrailerManagers here to guarantee
# that lengths don't change while finding the right trailer
# but that might block the readyToPlayQueue from getting
# loaded. Besides, it doesn't matter too much if we play
# the incorrect trailer, as long as we get one. The
# major fear is if we have no trailers at all, but that
# will be handled elsewhere.
# Get total number of trailers from all managers.
# It is possible that all discovery is complete and there is nothing
# to play.
nothing_to_play = True
# playable_trailers_map = None # type: Dict[str,
# PlayableTrailersContainer]
# type:
playable_trailers_map = PlayableTrailersContainer.get_instances()
# Dict[str, PlayableTrailersContainer]
# Need to use the same projected sizes throughout this method.
projected_sizes_map = {}
for source in playable_trailers_map:
playable_trailers = playable_trailers_map[source]
if not playable_trailers.is_playable_trailers():
continue
movie_data = playable_trailers.get_movie_data()
self.throw_exception_on_forced_to_stop(movie_data=movie_data)
number_of_trailers = movie_data.get_number_of_movies()
trailers_queue_size = movie_data.get_discovered_trailer_queue_size(
)
if self.logger.isEnabledFor(LazyLogger.DISABLED):
self.logger.debug_extra_verbose(
source, 'size:', number_of_trailers,
'discoveredTrailersQueue size:', trailers_queue_size,
'readyToPlayQueue size:',
playable_trailers.get_ready_to_play_queue().qsize(),
'trailersToFetchQueue size:',
movie_data.get_trailers_to_fetch_queue_size())
projected_size = movie_data.get_projected_number_of_trailers()
projected_sizes_map[source] = projected_size
total_number_of_trailers += projected_size
if not movie_data.is_discovery_complete(
) or number_of_trailers != 0:
nothing_to_play = False
# If we have played everything, then we start over.
if (trailers_queue_size == 0
and playable_trailers.is_playable_trailers()):
if self.logger.isEnabledFor(LazyLogger.DEBUG_VERBOSE):
self.logger.debug(
'Shuffling because discoveredTrailerQueue empty',
trace=Trace.TRACE_DISCOVERY)
movie_data.shuffle_discovered_trailers(mark_unplayed=True)
if nothing_to_play:
if self.logger.isEnabledFor(LazyLogger.DEBUG_VERBOSE):
self.logger.debug_verbose('Nothing to Play! numTrailers:',
total_number_of_trailers)
raise StopIteration
# return None
# Now, randomly pick playable_trailers to get a trailer from based upon
# the number of trailers in each.
#
# We loop here because there may not be any trailers in the readyToPlayQueue
# for a specific playable_trailers
trailer = None
attempts = 0
while trailer is None and attempts < 10:
try:
trailer_index_to_play = DiskUtils.RandomGenerator.randint(
0, total_number_of_trailers - 1)
if self.logger.isEnabledFor(LazyLogger.DISABLED):
self.logger.debug_extra_verbose(
'PlayableTrailerService.next trailer_index_to_play:',
trailer_index_to_play)
except (ValueError) as e: # Empty range
Monitor.throw_exception_if_abort_requested(timeout=0.10)
continue
total_number_of_trailers = 0
found_playable_trailers = None
for source in playable_trailers_map:
playable_trailers = playable_trailers_map[source]
if not playable_trailers.is_playable_trailers():
continue
movie_data = playable_trailers.get_movie_data()
self.throw_exception_on_forced_to_stop(movie_data=movie_data)
projected_size = playable_trailers.get_projected_number_of_trailers(
)
if self.logger.isEnabledFor(LazyLogger.DISABLED):
self.logger.debug_extra_verbose('source:', source,
'projected size:',
projected_size)
total_number_of_trailers += projected_sizes_map[source]
if self.logger.isEnabledFor(LazyLogger.DISABLED):
self.logger.debug_extra_verbose(
'total_number_of_trailers:', total_number_of_trailers)
if trailer_index_to_play < total_number_of_trailers:
found_playable_trailers = playable_trailers
break
try:
attempts += 1
if attempts > 1 and self.logger.isEnabledFor(
LazyLogger.DEBUG_VERBOSE):
self.logger.debug_verbose(
'PlayableTrailerService.next Attempt:', attempts,
'manager:', found_playable_trailers.__class__.__name__)
trailer = found_playable_trailers.get_next_movie()
TrailerCache.validate_cached_files(trailer)
# If cached trailer is invalid, then skip over this trailer.
if trailer[
Movie.
DISCOVERY_STATE] != Movie.DISCOVERY_READY_TO_DISPLAY:
trailer = None
else:
found_playable_trailers.set_starving(False)
title = trailer[Movie.TITLE] + \
' : ' + trailer[Movie.TRAILER]
except queue.Empty:
found_playable_trailers.set_starving(True)
trailer = None
duration_of_first_attempt = datetime.datetime.now() - start_time
second_attempt_start_time = None
second_method_attempts = None
if trailer is None:
if self.logger.isEnabledFor(LazyLogger.DEBUG_VERBOSE):
self.logger.debug_verbose(
'Trailer not found by preferred method', trace=Trace.TRACE)
# Alternative method is to pick a random PlayableTrailersContainer to start
# with and then find one that has a trailer. Otherwise, camp out.
second_attempt_start_time = datetime.datetime.now()
second_method_attempts = 0
iteration = 0
playable_trailers_list = [*playable_trailers_map.keys()]
DiskUtils.RandomGenerator.shuffle(playable_trailers_list)
for source in itertools.cycle(playable_trailers_list):
try:
playable_trailers = playable_trailers_map[source]
movie_data = playable_trailers.get_movie_data()
self.throw_exception_on_forced_to_stop(
movie_data=movie_data)
if (playable_trailers.get_number_of_playable_movies() == 0
and playable_trailers.get_movie_data(
).get_number_of_movies() > 0
and playable_trailers.is_playable_trailers()):
if self.logger.isEnabledFor(LazyLogger.DEBUG_VERBOSE):
self.logger.debug_verbose(
'Shuffling because',
'discoveredTrailerQueue empty',
'source:',
source,
trace=Trace.TRACE_DISCOVERY)
playable_trailers.get_movie_data().\
shuffle_discovered_trailers(mark_unplayed=True)
trailer = playable_trailers.get_next_movie()
# If cached trailer is invalid, then skip over this
# trailer.
if trailer[
Movie.
DISCOVERY_STATE] != Movie.DISCOVERY_READY_TO_DISPLAY:
trailer = None
if trailer is not None:
break
except queue.Empty:
pass # try again
recently_played_trailers = \
PlayableTrailersContainer.get_recently_played_trailers()
if len(recently_played_trailers) != 0:
recently_played_list = list(
recently_played_trailers.values())
trailer_index_to_play = DiskUtils.RandomGenerator.randint(
0,
len(recently_played_trailers) - 1)
trailer = recently_played_list[trailer_index_to_play]
break
iteration += 1
if iteration % len(playable_trailers_list) == 0:
second_method_attempts += 1
Monitor.throw_exception_if_abort_requested(timeout=0.5)
if trailer is None:
self._next_failures += 1
else:
trailer[Movie.TRAILER_PLAYED] = True
title = trailer[Movie.TITLE] + ' : ' + trailer[Movie.TRAILER]
duration = datetime.datetime.now() - start_time
self._next_total_duration += duration.seconds
self._next_calls += 1
self._next_attempts += attempts
self._next_total_first_method_attempts += attempts
Statistics.add_next_trailer_wait_time(
duration_of_first_attempt.seconds, attempts)
if second_method_attempts is not None:
self._next_attempts += second_method_attempts
self._next_second_attempts += second_method_attempts
second_duration = datetime.datetime.now(
) - second_attempt_start_time
self._next_second_total_Duration += second_duration.seconds
Statistics.add_next_trailer_second_attempt_wait_time(
second_duration.seconds, second_method_attempts)
if trailer is None:
raise StopIteration
if self.logger.isEnabledFor(LazyLogger.DEBUG_VERBOSE):
self.logger.debug_verbose('Playing:',
trailer[Movie.DETAIL_TITLE],
trace=Trace.TRACE)
Debug.validate_detailed_movie_properties(trailer)
# Periodically report on played movie statistics
self._played_movies_count += 1
if self.logger.is_trace_enabled(Trace.TRACE_PLAY_STATS):
if (self._played_movies_count % 100) == 0:
PlayStatistics.report_play_count_stats()
return trailer