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Code Issues 10 Pull Requests Activity

work on streamer, change a bit how it works; make archiving

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This commit is contained in:
bkfox
2017-07-16 14:30:46 +02:00
parent 08cb8e71bb
commit e162b652b8
2 changed files with 192 additions and 57 deletions
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128
aircox/management/commands/streamer.py
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@ -14,6 +14,7 @@ from argparse import RawTextHelpFormatter
from django.conf import settings as main_settings
from django.core.management.base import BaseCommand, CommandError
from django.utils import timezone as tz
from django.utils.functional import cached_property
from aircox.models import Station, Diffusion, Track, Sound, Log #, DiffusionLog, SoundLog
@ -54,17 +55,41 @@ class Monitor:
Datetime of the next sync
"""
_last_log = None
"""
Last emitted log
"""
def _last_log(self, **kwargs):
return Log.objects.station(self.station, **kwargs) \
.select_related('diffusion', 'sound') \
.order_by('date').last()
@property
def last_log(self):
"""
Last log of monitored station
"""
return self._last_log()
@property
def last_sound(self):
"""
Last sound log of monitored station that occurred on_air
"""
return self._last_log(type = Log.Type.on_air,
sound__isnull = False)
@property
def last_diff_start(self):
"""
Log of last triggered item (sound or diffusion)
"""
return self._last_log(type = Log.Type.start,
diffusion__isnull = False)
def __init__(self, station, **kwargs):
self.station = station
self.__dict__.update(kwargs)
self._last_log = Log.objects.station(station).order_by('date') \
.last()
now = tz.now()
def monitor(self):
"""
@ -91,9 +116,9 @@ class Monitor:
# update last log
if log.type != Log.Type.other and \
self._last_log and not self._last_log.end:
self._last_log.end = log.date
self._last_log = log
self.last_log and not self.last_log.end:
self.last_log.end = log.date
return log
def trace(self):
"""
@ -106,51 +131,59 @@ class Monitor:
if not current_sound or not current_source:
return
log = Log.objects.station(self.station, sound__isnull = False) \
.select_related('sound') \
.order_by('date').last()
# last log can be anything, so we need to keep track of the last
# sound log too
# sound on air can be of a diffusion or a stream.
# only streamed ns
if log and not log.sound.diffusion:
log = self.last_log
# sound on air changed
if log.source != current_source.id or \
(log.sound and log.sound.path != current_sound):
sound = Sound.objects.filter(path = current_sound).first()
# find diff
last_diff = self.last_diff_start
diff = None
if not last_diff.is_expired():
archives = last_diff.diffusion.get_archives()
if archives.filter(pk = sound.pk).exists():
diff = last_diff.diffusion
# log sound on air
log = self.log(
type = Log.Type.on_air,
source = current_source.id,
date = tz.now(),
sound = sound,
diffusion = diff,
# keep sound path (if sound is removed, we keep that info)
comment = current_sound,
)
# tracks -- only for sound's
if not log.diffusion:
self.trace_sound_tracks(log)
# TODO: expiration
if log and (log.source == current_source.id and \
log.sound and
log.sound.path == current_sound):
return
sound = Sound.objects.filter(path = current_sound).first()
self.log(
type = Log.Type.on_air,
source = current_source.id,
date = tz.now(),
sound = sound,
# keep sound path (if sound is removed, we keep that info)
comment = current_sound,
)
def trace_sound_tracks(self, log):
"""
Log tracks for the given sound (for streamed programs); Called by
self.trace
Log tracks for the given sound log (for streamed programs).
Called by self.trace
"""
logs = Log.objects.station(self.station,
track__isnull = False,
pk__gt = log.pk) \
.values_list('sound__pk', flat = True)
tracks = Track.objects.get_for(object = log.sound) \
.filter(in_seconds = True)
if tracks and len(tracks) == len(logs):
if not tracks.exists():
return
tracks = tracks.exclude(pk__in = logs).order_by('position')
tracks = tracks.exclude(log__station = self.station,
log__pk__gt = log.pk)
now = tz.now()
for track in tracks:
pos = log.date + tz.timedelta(seconds = track.position)
if pos > now:
break
# log track on air
self.log(
type = Log.Type.on_air, source = log.source,
date = pos, track = track,
@ -195,6 +228,7 @@ class Monitor:
if diff.start < now:
diff.type = Diffusion.Type.canceled
diff.save()
# log canceled diffusion
self.log(
type = Log.Type.other,
diffusion = diff,
@ -254,13 +288,17 @@ class Monitor:
"""
Update playlist of a source if required, and handle logging when
it is needed.
- source: source on which it happens
- playlist: list of sounds to use to update
- diff: related diffusion
"""
dealer = self.station.dealer
if dealer.playlist == playlist:
if source.playlist == playlist:
return
dealer.playlist = playlist
source.playlist = playlist
if diff and not diff.is_live():
# log diffusion archive load
self.log(type = Log.Type.load,
source = source.id,
diffusion = diff,
@ -284,6 +322,7 @@ class Monitor:
diff_ = Log.objects.station(self.station) \
.filter(diffusion = diff, type = Log.Type.on_air)
if not diff_.count():
# log live diffusion
self.log(type = Log.Type.on_air, source = source.id,
diffusion = diff, date = date)
return
@ -291,8 +330,11 @@ class Monitor:
# enable dealer
if not source.active:
source.active = True
self.log(type = Log.Type.play, source = source.id,
diffusion = diff, date = date)
last_start = self.last_start
if last_start.diffusion_id != diff.pk:
# log triggered diffusion
self.log(type = Log.Type.start, source = source.id,
diffusion = diff, date = date)
def handle(self):
"""