357 lines
10 KiB
Python
357 lines
10 KiB
Python
import os
|
|
import socket
|
|
import re
|
|
import json
|
|
|
|
from django.utils import timezone as tz
|
|
from django.utils.translation import ugettext as _, ugettext_lazy
|
|
from django.utils.text import slugify
|
|
from django.conf import settings as main_settings
|
|
from django.template.loader import render_to_string
|
|
|
|
import aircox.programs.models as programs
|
|
import aircox.programs.settings as programs_settings
|
|
import aircox.liquidsoap.models as models
|
|
import aircox.liquidsoap.settings as settings
|
|
|
|
|
|
class Connector:
|
|
"""
|
|
Telnet connector utility.
|
|
|
|
address: a string to the unix domain socket file, or a tuple
|
|
(host, port) for TCP/IP connection
|
|
"""
|
|
__socket = None
|
|
__available = False
|
|
address = None
|
|
|
|
@property
|
|
def available(self):
|
|
return self.__available
|
|
|
|
def __init__(self, address = None):
|
|
if address:
|
|
self.address = address
|
|
|
|
def open(self):
|
|
if self.__available:
|
|
return
|
|
|
|
try:
|
|
family = socket.AF_INET if type(self.address) in (tuple, list) else \
|
|
socket.AF_UNIX
|
|
self.__socket = socket.socket(family, socket.SOCK_STREAM)
|
|
self.__socket.connect(self.address)
|
|
self.__available = True
|
|
except:
|
|
self.__available = False
|
|
return -1
|
|
|
|
def send(self, *data, try_count = 1, parse = False, parse_json = False):
|
|
if self.open():
|
|
return ''
|
|
data = bytes(''.join([str(d) for d in data]) + '\n', encoding='utf-8')
|
|
|
|
try:
|
|
reg = re.compile(r'(.*)\s+END\s*$')
|
|
self.__socket.sendall(data)
|
|
data = ''
|
|
while not reg.search(data):
|
|
data += self.__socket.recv(1024).decode('utf-8')
|
|
|
|
if data:
|
|
data = reg.sub(r'\1', data)
|
|
data = data.strip()
|
|
|
|
if parse:
|
|
data = self.parse(data)
|
|
elif parse_json:
|
|
data = self.parse_json(data)
|
|
return data
|
|
except:
|
|
self.__available = False
|
|
if try_count > 0:
|
|
return self.send(data, try_count - 1)
|
|
|
|
def parse(self, string):
|
|
string = string.split('\n')
|
|
data = {}
|
|
for line in string:
|
|
line = re.search(r'(?P<key>[^=]+)="?(?P<value>([^"]|\\")+)"?', line)
|
|
if not line:
|
|
continue
|
|
line = line.groupdict()
|
|
data[line['key']] = line['value']
|
|
return data
|
|
|
|
def parse_json(self, string):
|
|
try:
|
|
if string[0] == '"' and string[-1] == '"':
|
|
string = string[1:-1]
|
|
return json.loads(string) if string else None
|
|
except:
|
|
return None
|
|
|
|
class BaseSource:
|
|
id = None
|
|
name = None
|
|
controller = None
|
|
metadata = None
|
|
|
|
def __init__(self, controller, id, name):
|
|
self.id = id
|
|
self.name = name
|
|
self.controller = controller
|
|
|
|
def _send(self, *args, **kwargs):
|
|
return self.controller.connector.send(*args, **kwargs)
|
|
|
|
@property
|
|
def current_sound(self):
|
|
self.update()
|
|
return self.metadata.get('initial_uri') if self.metadata else {}
|
|
|
|
def skip(self):
|
|
"""
|
|
Skip a given source. If no source, use master.
|
|
"""
|
|
self._send(self.id, '.skip')
|
|
|
|
def update(self, metadata = None):
|
|
"""
|
|
Update metadata with the given metadata dict or request them to
|
|
liquidsoap if nothing is given.
|
|
|
|
Return -1 in case no update happened
|
|
"""
|
|
if metadata is None:
|
|
r = self._send(self.id, '.get', parse=True)
|
|
return self.update(metadata = r or {})
|
|
|
|
source = metadata.get('source') or ''
|
|
if hasattr(self, 'program') and self.program \
|
|
and not source.startswith(self.id):
|
|
return -1
|
|
self.metadata = metadata
|
|
return
|
|
|
|
|
|
class Source(BaseSource):
|
|
__playlist = None # playlist file
|
|
program = None # related program (if given)
|
|
is_dealer = False # Source is a dealer
|
|
metadata = None
|
|
|
|
def __init__(self, controller, program = None, is_dealer = None):
|
|
if is_dealer:
|
|
id, name = '{}_dealer'.format(controller.id), \
|
|
'Dealer'
|
|
self.is_dealer = True
|
|
else:
|
|
id, name = '{}_stream_{}'.format(controller.id, program.id), \
|
|
program.name
|
|
|
|
super().__init__(controller, id, name)
|
|
|
|
self.program = program
|
|
self.path = os.path.join(settings.AIRCOX_LIQUIDSOAP_MEDIA,
|
|
controller.id,
|
|
self.id + '.m3u')
|
|
if program:
|
|
self.playlist_from_db()
|
|
|
|
@property
|
|
def on(self):
|
|
"""
|
|
Switch on-off;
|
|
"""
|
|
if not self.is_dealer:
|
|
raise RuntimeError('only dealers can do that')
|
|
r = self._send('var.get ', self.id, '_on')
|
|
return (r == 'true')
|
|
|
|
@on.setter
|
|
def on(self, value):
|
|
if not self.is_dealer:
|
|
raise RuntimeError('only dealers can do that')
|
|
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.
|
|
"""
|
|
if not self.program:
|
|
return
|
|
|
|
stream = programs.Stream.objects.get(program = self.program)
|
|
if not stream.begin and not stream.delay:
|
|
return
|
|
|
|
def to_seconds(time):
|
|
return 3600 * time.hour + 60 * time.minute + time.second
|
|
|
|
return {
|
|
'begin': stream.begin.strftime('%Hh%M') if stream.begin else None,
|
|
'end': stream.end.strftime('%Hh%M') if stream.end else None,
|
|
'delay': to_seconds(stream.delay) if stream.delay else 0
|
|
}
|
|
|
|
|
|
class Master (BaseSource):
|
|
"""
|
|
A master Source based on a given station
|
|
"""
|
|
def update(self, metadata = None):
|
|
if metadata is not None:
|
|
return super().update(metadata)
|
|
|
|
r = self._send('request.on_air')
|
|
r = self._send('request.metadata ', r, parse = True)
|
|
return self.update(metadata = r or {})
|
|
|
|
|
|
class Controller:
|
|
"""
|
|
Main class controller for station and sources (streams and dealer)
|
|
"""
|
|
id = None
|
|
name = None
|
|
path = None
|
|
|
|
connector = None
|
|
master = None # master source
|
|
dealer = None # dealer source
|
|
streams = None # streams streams
|
|
|
|
# FIXME: used nowhere except in liquidsoap cli to get on air item but is not
|
|
# correct
|
|
@property
|
|
def on_air(self):
|
|
return self.master
|
|
|
|
@property
|
|
def socket_path(self):
|
|
"""
|
|
Connector's socket path
|
|
"""
|
|
return os.path.join(self.path, 'station.sock')
|
|
|
|
@property
|
|
def config_path(self):
|
|
"""
|
|
Connector's socket path
|
|
"""
|
|
return os.path.join(self.path, 'station.liq')
|
|
|
|
def __init__(self, station, connector = True, update = False):
|
|
"""
|
|
Params:
|
|
- station: managed station
|
|
- connector: if true, create a connector, else do not
|
|
|
|
Initialize a master, a dealer and all streams that are connected
|
|
to the given station; We ensure the existence of the controller's
|
|
files dir.
|
|
"""
|
|
self.id = slugify(station)
|
|
self.name = station
|
|
self.path = os.path.join(settings.AIRCOX_LIQUIDSOAP_MEDIA, self.id)
|
|
|
|
self.outputs = models.Output.objects.all()
|
|
|
|
self.connector = connector and Connector(self.socket_path)
|
|
|
|
self.master = Master(self)
|
|
self.dealer = Source(self, is_dealer = True)
|
|
self.streams = {
|
|
source.id : source
|
|
for source in [
|
|
Source(self, program)
|
|
for program in programs.Program.objects.filter(active = True)
|
|
if program.stream_set.count()
|
|
]
|
|
}
|
|
|
|
if update:
|
|
self.update()
|
|
|
|
def get(self, source_id):
|
|
"""
|
|
Get a source by its id
|
|
"""
|
|
if source_id == self.master.id:
|
|
return self.master
|
|
if source_id == self.dealer.id:
|
|
return self.dealer
|
|
return self.streams.get(source_id)
|
|
|
|
def update(self):
|
|
"""
|
|
Fetch and update all streams metadata.
|
|
"""
|
|
self.master.update()
|
|
self.dealer.update()
|
|
for source in self.streams.values():
|
|
source.update()
|
|
|
|
def write(self, playlist = True, config = True):
|
|
"""
|
|
Write stream's playlists, and config
|
|
"""
|
|
if playlist:
|
|
for source in self.streams.values():
|
|
source.write()
|
|
self.dealer.write()
|
|
|
|
if not config:
|
|
return
|
|
|
|
context = {
|
|
'controller': self,
|
|
'settings': settings,
|
|
}
|
|
|
|
# FIXME: remove this crappy thing
|
|
data = render_to_string('aircox/liquidsoap/station.liq', context)
|
|
data = re.sub(r'\s*\\\n', r'#\\n#', data)
|
|
data = data.replace('\n', '')
|
|
data = re.sub(r'#\\n#', '\n', data)
|
|
with open(self.config_path, 'w+') as file:
|
|
file.write(data)
|
|
|
|
|