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work on monitor algorithm

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This commit is contained in:
bkfox 2016-05-17 23:21:02 +02:00
parent 29d0929a0c
commit 20694d8a74
4 changed files with 159 additions and 138 deletions
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119
liquidsoap/management/commands/liquidsoap.py
View File

@ -34,6 +34,7 @@ class Monitor:
cl.run_source(controller.master)
cl.run_dealer(controller)
cl.run_source(controller.dealer)
for stream in controller.streams.values():
cl.run_source(stream)
@ -47,61 +48,76 @@ class Monitor:
log.save()
log.print()
@staticmethod
def expected_diffusion (station, date, on_air):
"""
Return which diffusion should be played now and is not playing
on the given station.
"""
r = [ programs.Diffusion.get_prev(station, date),
programs.Diffusion.get_next(station, date) ]
r = [ diffusion.prefetch_related('sounds')[0]
for diffusion in r if diffusion.count() ]
@classmethod
def __get_prev_diff(cl, source, played_sounds = True):
diff_logs = programs.Log.get_for_related_model(programs.Diffusion) \
.filter(source = source.id) \
.order_by('-date')
if played_sounds:
sound_logs = programs.Log.get_for_related_model(programs.Sound) \
.filter(source = source.id) \
.order_by('-date')
if not diff_logs:
return
for diffusion in r:
if diffusion.end < date:
continue
diffusion.playlist = [ sound.path
for sound in diffusion.get_archives() ]
diffusion.playlist.save()
if diffusion.playlist and on_air not in diffusion.playlist:
return diffusion
diff = diff_logs[0].related_object
playlist = diff.playlist
if played_sounds:
diff.played = [ sound.related_object.path
for sound in sound_logs[0:len(playlist)] ]
return diff
@classmethod
def run_dealer (cl, controller):
"""
Monitor dealer playlist (if it is time to load) and whether it is time
to trigger the button to start a diffusion.
"""
def run_dealer(cl, controller):
# - this function must recover last state in case of crash
# -> don't store data out of hdd
# - construct gradually the playlist and update it if needed
# -> we force liquidsoap to preload tracks of next diff
# - dealer.on while last logged diff is playing, otherwise off
# - when next diff is now and last diff no more active, play it
# -> log and dealer.on
dealer = controller.dealer
playlist = dealer.playlist
on_air = dealer.current_sound
now = tz.make_aware(tz.datetime.now())
playlist = []
diff = cl.expected_diffusion(controller.station, now, on_air)
if not diff:
return # there is nothing we can do
# - the last logged diff is the last one played, it can be playing
# -> no sound left or the diff is not more current: dealer.off
# -> otherwise, ensure dealer.on
# - played sounds are logged in run_source
prev_diff = cl.__get_prev_diff(dealer)
if prev_diff and prev_diff.is_date_in_my_range(now):
playlist = [ path for path in prev_diff.playlist
if path not in prev_diff.played ]
dealer.on = bool(playlist)
else:
playlist = []
dealer.on = False
# playlist reload
if dealer.playlist != diff.playlist:
if not playlist or on_air == playlist[-1] or \
on_air not in playlist:
dealer.on = False
dealer.playlist = diff.playlist
dealer.playlist.save()
# - preload next diffusion's tracks
args = {'start__gt': prev_diff.start } if prev_diff else {}
next_diff = programs.Diffusion \
.get(controller.station, now, now = True,
sounds__isnull = False, **args) \
.prefetch_related('sounds')
if next_diff:
next_diff = next_diff[0]
playlist += next_diff.playlist
# run the diff
if dealer.playlist == diff.playlist and diff.start <= now and not dealer.on:
# playlist update
if dealer.playlist != playlist:
dealer.playlist = playlist
# dealer.on when next_diff.start <= now
if next_diff and not dealer.on and next_diff.start <= now:
dealer.on = True
for source in controller.streams.values():
source.skip()
cl.log(
source = dealer.id,
date = now,
comment = 'trigger the scheduled diffusion to liquidsoap; '
'skip all other streams',
related_object = diff,
comment = 'trigger diffusion to liquidsoap; '
'skip other streams',
related_object = next_diff,
)
@classmethod
@ -124,9 +140,9 @@ class Monitor:
last_log = last_log[0]
last_obj = last_log.related_object
if type(last_obj) == programs.Sound and on_air == last_obj.path:
if not last_obj.duration or \
now < log.date + programs_utils.to_timedelta(last_obj.duration):
return
#if not last_obj.duration or \
# now < last_log.date + to_timedelta(last_obj.duration):
return
sound = programs.Sound.objects.filter(path = on_air)
if not sound:
@ -136,7 +152,7 @@ class Monitor:
cl.log(
source = source.id,
date = tz.make_aware(tz.datetime.now()),
comment = 'sound has changed',
comment = 'sound changed',
related_object = sound or None,
)
@ -198,7 +214,6 @@ class Command (BaseCommand):
run = options.get('run')
monitor = options.get('on_air') or options.get('monitor')
self.controllers = [ utils.Controller(station, connector = monitor)
for station in stations ]
@ -217,7 +232,7 @@ class Command (BaseCommand):
def handle_write (self):
for controller in self.controllers:
controller.write_data()
controller.write()
def handle_run (self):
for controller in self.controllers:
@ -227,22 +242,18 @@ class Command (BaseCommand):
atexit.register(controller.process.terminate)
def handle_monitor (self, options):
controllers = [
utils.Controller(station)
for station in programs.Station.objects.filter(active = True)
]
for controller in controllers:
for controller in self.controllers:
controller.update()
if options.get('on_air'):
for controller in controllers:
for controller in self.controllers:
print(controller.id, controller.on_air)
return
if options.get('monitor'):
delay = options.get('delay') / 1000
while True:
for controller in controllers:
for controller in self.controllers:
#try:
Monitor.run(controller)
#except Exception as err:

10
liquidsoap/templates/aircox/liquidsoap/station.liq
View File

@ -31,7 +31,7 @@ set("{{ key|safe }}", {{ value|safe }}) \
at(interactive.bool('{{ source.id }}_on', false), \
interactive_source('{{ source.id }}', playlist.once( \
reload_mode='watch', \
"{{ source.playlist.path }}", \
"{{ source.path }}", \
)) \
), \
{% endif %}
@ -41,21 +41,17 @@ set("{{ key|safe }}", {{ value|safe }}) \
interactive_source("{{ controller.id }}_streams", rotate([ \
{% for source in controller.streams.values %}
{% with info=source.stream_info %}
{% with path=source.playlist.path %}
{% if info.delay %}
delay({{ info.delay }}., stream("{{ source.id }}", "{{ path }}")), \
delay({{ info.delay }}., stream("{{ source.id }}", "{{ source.path }}")), \
{% elif info.begin and info.end %}
at({ {{info.begin}}-{{info.end}} }, stream("{{ source.id }}", "{{ path }}")), \
at({ {{info.begin}}-{{info.end}} }, stream("{{ source.id }}", "{{ source.path }}")), \
{% endif %}
{% endwith %}
{% endwith %}
{% endfor %}
{% for source in controller.streams.values %}
{% if not source.stream_info %}
{% with path=source.playlist.path %}
stream("{{ source.id }}", "{{ source.path }}"), \
{% endwith %}
{% endif %}
{% endfor %}
])), \

105
liquidsoap/utils.py
View File

@ -45,7 +45,6 @@ class Connector:
self.__socket.connect(self.address)
self.__available = True
except:
# print('can not connect to liquidsoap socket {}'.format(self.address))
self.__available = False
return -1
@ -94,57 +93,6 @@ class Connector:
except:
return None
class Playlist(list):
path = None
def __init__(self, path = None, items = None, program = None):
self.path = path
self.program = program
if program:
self.load_from_db()
elif path:
self.load()
elif items:
self.extend(items)
def save(self):
"""
Save data to the playlist file
"""
os.makedirs(os.path.dirname(self.path), exist_ok = True)
with open(self.path, 'w') as file:
file.write('\n'.join(self))
def load(self):
"""
Load data from playlist file
"""
if not os.path.exists(self.path):
return
with open(self.path, 'r') as file:
self.clear()
self.extend(file.readlines())
def load_from_db(self, clear = True):
"""
Update content from the database using the given program
If clear is True, clear older items, otherwise append to the
current playlist.
If save is True, save the playlist to the playlist file
"""
sounds = programs.Sound.objects.filter(
type = programs.Sound.Type['archive'],
path__startswith = os.path.join(
programs_settings.AIRCOX_SOUND_ARCHIVES_SUBDIR,
self.program.path
),
# good_quality = True
removed = False
)
self.clear()
self.extend([sound.path for sound in sounds])
class BaseSource:
id = None
name = None
@ -157,7 +105,7 @@ class BaseSource:
self.controller = controller
def _send(self, *args, **kwargs):
self.controller.connector.send(*args, **kwargs)
return self.controller.connector.send(*args, **kwargs)
@property
def current_sound(self):
@ -191,7 +139,7 @@ class BaseSource:
class Source(BaseSource):
playlist = None # playlist file
__playlist = None # playlist file
program = None # related program (if given)
is_dealer = False # Source is a dealer
metadata = None
@ -208,10 +156,12 @@ class Source(BaseSource):
super().__init__(controller, id, name)
path = os.path.join(settings.AIRCOX_LIQUIDSOAP_MEDIA,
station.slug,
self.id + '.m3u')
self.playlist = Playlist(path, program = program)
self.program = program
self.path = os.path.join(settings.AIRCOX_LIQUIDSOAP_MEDIA,
station.slug,
self.id + '.m3u')
if program:
self.playlist_from_db()
@property
def on(self):
@ -230,6 +180,38 @@ class Source(BaseSource):
return self._send('var.set ', self.id, '_on', '=',
'true' if value else 'false')
@property
def playlist(self):
return self.__playlist
@playlist.setter
def playlist(self, value):
self.__playlist = value
self.write()
def write(self):
"""
Write stream's data (playlist)
"""
os.makedirs(os.path.dirname(self.path), exist_ok = True)
with open(self.path, 'w') as file:
file.write('\n'.join(self.playlist or []))
def playlist_from_db(self):
"""
Update content from the database using the source's program
"""
sounds = programs.Sound.objects.filter(
type = programs.Sound.Type['archive'],
path__startswith = os.path.join(
programs_settings.AIRCOX_SOUND_ARCHIVES_SUBDIR,
self.program.path
),
# good_quality = True
removed = False
)
self.playlist = [sound.path for sound in sounds]
def stream_info(self):
"""
Return a dict with info related to the program's stream.
@ -356,15 +338,14 @@ class Controller:
for source in self.streams.values():
source.update()
def write_data(self, playlist = True, config = True):
def write(self, playlist = True, config = True):
"""
Write stream's playlists, and config
"""
os.makedirs(self.path, exist_ok = True)
if playlist:
for source in self.streams.values():
source.playlist.save()
self.dealer.playlist.save()
source.write()
self.dealer.write()
if not config:
return

63
programs/models.py
View File

@ -115,6 +115,7 @@ class Sound (Nameable):
.replace('.', r'\.') + ')$',
recursive = True,
blank = True, null = True,
max_length = 256
)
embed = models.TextField(
_('embed HTML code'),
@ -594,6 +595,15 @@ class Diffusion (models.Model):
def date (self):
return self.start
@property
def playlist(self):
"""
List of sounds as playlist
"""
playlist = [ sound.path for sound in self.sounds.all() ]
playlist.sort()
return playlist
def archives_duration (self):
"""
Get total duration of the archives. May differ from the schedule
@ -615,26 +625,49 @@ class Diffusion (models.Model):
return r
@classmethod
def get_next (cl, station = None, date = None, **filter_args):
def get (cl, station = None, date = None,
now = False, next = False, prev = False,
**filter_args):
"""
Return a queryset with the upcoming diffusions, ordered by
+date
"""
filter_args['start__gte'] = date_or_default(date)
if station:
filter_args['program__station'] = station
return cl.objects.filter(**filter_args).order_by('start')
Return a queryset of diffusions, depending on value of now/next/prev
- now: that have date in their start-end range or start after
- next: that start after date
- prev: that end before date
@classmethod
def get_prev (cl, station = None, date = None, **filter_args):
Diffusions are ordered by +start for now and next; -start for prev
"""
Return a queryset with the previous diffusion, ordered by
-date
"""
filter_args['start__lte'] = date_or_default(date)
#FIXME: conflicts? ( + calling functions)
date = date_or_default(date)
if station:
filter_args['program__station'] = station
return cl.objects.filter(**filter_args).order_by('-start')
if now:
return cl.objects.filter(
models.Q(start__lte = date,
end__gte = date) |
models.Q(start__gte = date),
**filter_args
).order_by('start')
if next:
return cl.objects.filter(
start__gte = date,
**filter_args
).order_by('start')
if prev:
return cl.objects.filter(
end__lte = date,
**filter_args
).order_by('-start')
def is_date_in_my_range(self, date):
"""
Return true if the given date is in the diffusion's start-end
range.
"""
return self.start < date_or_default(date) < self.end
def get_conflicts (self):
"""