forked from rc/aircox
406 lines
13 KiB
Python
Executable File
406 lines
13 KiB
Python
Executable File
#! /usr/bin/env python3
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"""
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Monitor sound files; For each program, check for:
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- new files;
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- deleted files;
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- differences between files and sound;
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- quality of the files;
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It tries to parse the file name to get the date of the diffusion of an
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episode and associate the file with it; We use the following format:
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yyyymmdd[_n][_][name]
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Where:
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'yyyy' the year of the episode's diffusion;
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'mm' the month of the episode's diffusion;
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'dd' the day of the episode's diffusion;
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'n' the number of the episode (if multiple episodes);
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'name' the title of the sound;
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To check quality of files, call the command sound_quality_check using the
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parameters given by the setting AIRCOX_SOUND_QUALITY. This script requires
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Sox (and soxi).
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"""
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from argparse import RawTextHelpFormatter
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import datetime
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import atexit
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import logging
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import os
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import re
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import subprocess
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import time
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from watchdog.observers import Observer
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from watchdog.events import PatternMatchingEventHandler, FileModifiedEvent
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from django.conf import settings as main_settings
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from django.core.management.base import BaseCommand, CommandError
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from django.utils import timezone as tz
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from aircox import settings, utils
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from aircox.models import Diffusion, Program, Sound
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from .import_playlist import PlaylistImport
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logger = logging.getLogger('aircox.commands')
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sound_path_re = re.compile(
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'^(?P<year>[0-9]{4})(?P<month>[0-9]{2})(?P<day>[0-9]{2})'
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'(_(?P<hour>[0-9]{2})h(?P<minute>[0-9]{2}))?'
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'(_(?P<n>[0-9]+))?'
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'_?(?P<name>.*)$'
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)
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class SoundInfo:
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name = ''
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sound = None
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year = None
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month = None
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day = None
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hour = None
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minute = None
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n = None
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duration = None
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@property
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def path(self):
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return self._path
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@path.setter
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def path(self, value):
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"""
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Parse file name to get info on the assumption it has the correct
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format (given in Command.help)
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"""
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name = os.path.splitext(os.path.basename(value))[0]
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match = sound_path_re.search(name)
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match = match.groupdict() if match and match.groupdict() else \
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{'name': name}
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self._path = value
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self.name = match['name'].replace('_', ' ').capitalize()
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for key in ('year', 'month', 'day', 'hour', 'minute'):
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value = match.get(key)
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setattr(self, key, int(value) if value is not None else None)
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self.n = match.get('n')
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def __init__(self, path='', sound=None):
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self.path = path
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self.sound = sound
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def get_duration(self):
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p = subprocess.Popen(['soxi', '-D', self.path],
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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out, err = p.communicate()
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if not err:
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duration = utils.seconds_to_time(int(float(out)))
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self.duration = duration
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return duration
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def get_sound(self, save=True, **kwargs):
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"""
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Get or create a sound using self info.
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If the sound is created/modified, get its duration and update it
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(if save is True, sync to DB), and check for a playlist file.
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"""
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sound, created = Sound.objects.get_or_create(
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path=self.path, defaults=kwargs)
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if created or sound.check_on_file():
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logger.info('sound is new or have been modified -> %s', self.path)
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sound.duration = self.get_duration()
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sound.name = self.name
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if save:
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sound.save()
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self.sound = sound
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return sound
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def find_playlist(self, sound, use_default=True):
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"""
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Find a playlist file corresponding to the sound path, such as:
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my_sound.ogg => my_sound.csv
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If use_default is True and there is no playlist find found,
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use sound file's metadata.
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"""
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if sound.track_set.count():
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return
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# import playlist
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path = os.path.splitext(self.sound.path)[0] + '.csv'
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if os.path.exists(path):
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PlaylistImport(path, sound=sound).run()
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# try metadata
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elif use_default:
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track = sound.file_metadata()
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if track:
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track.save()
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def find_episode(self, program, save=True):
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"""
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For a given program, check if there is an initial diffusion
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to associate to, using the date info we have. Update self.sound
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and save it consequently.
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We only allow initial diffusion since there should be no
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rerun.
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"""
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if self.year is None or not self.sound or self.sound.episode:
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return
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if self.hour is None:
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date = datetime.date(self.year, self.month, self.day)
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else:
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date = tz.datetime(self.year, self.month, self.day,
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self.hour or 0, self.minute or 0)
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date = tz.get_current_timezone().localize(date)
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diffusion = program.diffusion_set.initial().at(date).first()
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if not diffusion:
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return
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logger.info('%s <--> %s', self.sound.path, str(diffusion.episode))
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self.sound.episode = diffusion.episode
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if save:
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self.sound.save()
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return diffusion
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class MonitorHandler(PatternMatchingEventHandler):
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"""
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Event handler for watchdog, in order to be used in monitoring.
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"""
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def __init__(self, subdir):
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"""
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subdir: AIRCOX_SOUND_ARCHIVES_SUBDIR or AIRCOX_SOUND_EXCERPTS_SUBDIR
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"""
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self.subdir = subdir
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if self.subdir == settings.AIRCOX_SOUND_ARCHIVES_SUBDIR:
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self.sound_kwargs = {'type': Sound.TYPE_ARCHIVE}
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else:
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self.sound_kwargs = {'type': Sound.TYPE_EXCERPT}
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patterns = ['*/{}/*{}'.format(self.subdir, ext)
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for ext in settings.AIRCOX_SOUND_FILE_EXT]
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super().__init__(patterns=patterns, ignore_directories=True)
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def on_created(self, event):
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self.on_modified(event)
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def on_modified(self, event):
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logger.info('sound modified: %s', event.src_path)
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program = Program.get_from_path(event.src_path)
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if not program:
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return
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si = SoundInfo(event.src_path)
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self.sound_kwargs['program'] = program
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si.get_sound(save=True, **self.sound_kwargs)
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if si.year is not None:
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si.find_episode(program)
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si.sound.save(True)
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def on_deleted(self, event):
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logger.info('sound deleted: %s', event.src_path)
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sound = Sound.objects.filter(path=event.src_path)
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if sound:
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sound = sound[0]
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sound.type = sound.TYPE_REMOVED
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sound.save()
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def on_moved(self, event):
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logger.info('sound moved: %s -> %s', event.src_path, event.dest_path)
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sound = Sound.objects.filter(path=event.src_path)
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if not sound:
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self.on_modified(
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FileModifiedEvent(event.dest_path)
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)
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return
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sound = sound[0]
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sound.path = event.dest_path
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if not sound.diffusion:
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program = Program.get_from_path(event.src_path)
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if program:
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si = SoundInfo(sound.path, sound=sound)
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if si.year is not None:
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si.find_episode(program)
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sound.save()
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class Command(BaseCommand):
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help = __doc__
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def report(self, program=None, component=None, *content):
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if not component:
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logger.info('%s: %s', str(program),
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' '.join([str(c) for c in content]))
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else:
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logger.info('%s, %s: %s', str(program), str(component),
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' '.join([str(c) for c in content]))
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def scan(self):
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"""
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For all programs, scan dirs
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"""
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logger.info('scan all programs...')
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programs = Program.objects.filter()
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dirs = []
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for program in programs:
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logger.info('#%d %s', program.id, program.title)
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self.scan_for_program(
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program, settings.AIRCOX_SOUND_ARCHIVES_SUBDIR,
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type=Sound.TYPE_ARCHIVE,
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)
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self.scan_for_program(
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program, settings.AIRCOX_SOUND_EXCERPTS_SUBDIR,
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type=Sound.TYPE_EXCERPT,
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)
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dirs.append(os.path.join(program.path))
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def scan_for_program(self, program, subdir, **sound_kwargs):
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"""
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Scan a given directory that is associated to the given program, and
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update sounds information.
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"""
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logger.info('- %s/', subdir)
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if not program.ensure_dir(subdir):
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return
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sound_kwargs['program'] = program
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subdir = os.path.join(program.path, subdir)
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sounds = []
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# sounds in directory
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for path in os.listdir(subdir):
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path = os.path.join(subdir, path)
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if not path.endswith(settings.AIRCOX_SOUND_FILE_EXT):
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continue
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si = SoundInfo(path)
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sound_kwargs['program'] = program
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si.get_sound(save=True, **sound_kwargs)
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si.find_episode(program, save=True)
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si.find_playlist(si.sound)
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sounds.append(si.sound.pk)
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# sounds in db & unchecked
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sounds = Sound.objects.filter(path__startswith=subdir). \
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exclude(pk__in=sounds)
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self.check_sounds(sounds)
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@staticmethod
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def check_sounds(qs):
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"""
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Only check for the sound existence or update
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"""
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# check files
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for sound in qs:
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if sound.check_on_file():
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sound.save(check=False)
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def check_quality(self, check=False):
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"""
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Check all files where quality has been set to bad
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"""
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import aircox.management.commands.sounds_quality_check as quality_check
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# get available sound files
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sounds = Sound.objects.filter(is_good_quality=False) \
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.exclude(type=Sound.TYPE_REMOVED)
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if check:
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self.check_sounds(sounds)
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files = [
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sound.path for sound in sounds
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if os.path.exists(sound.path) and sound.is_good_quality is None
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]
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# check quality
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logger.info('quality check...',)
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cmd = quality_check.Command()
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cmd.handle(files=files,
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**settings.AIRCOX_SOUND_QUALITY)
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# update stats
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logger.info('update stats in database')
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def update_stats(sound_info, sound):
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stats = sound_info.get_file_stats()
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if stats:
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duration = int(stats.get('length'))
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sound.duration = utils.seconds_to_time(duration)
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for sound_info in cmd.good:
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sound = Sound.objects.get(path=sound_info.path)
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sound.is_good_quality = True
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update_stats(sound_info, sound)
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sound.save(check=False)
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for sound_info in cmd.bad:
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sound = Sound.objects.get(path=sound_info.path)
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update_stats(sound_info, sound)
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sound.save(check=False)
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def monitor(self):
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"""
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Run in monitor mode
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"""
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archives_handler = MonitorHandler(
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subdir=settings.AIRCOX_SOUND_ARCHIVES_SUBDIR
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)
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excerpts_handler = MonitorHandler(
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subdir=settings.AIRCOX_SOUND_EXCERPTS_SUBDIR
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)
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observer = Observer()
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observer.schedule(archives_handler, settings.AIRCOX_PROGRAMS_DIR,
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recursive=True)
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observer.schedule(excerpts_handler, settings.AIRCOX_PROGRAMS_DIR,
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recursive=True)
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observer.start()
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def leave():
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observer.stop()
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observer.join()
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atexit.register(leave)
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while True:
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time.sleep(1)
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def add_arguments(self, parser):
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parser.formatter_class = RawTextHelpFormatter
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parser.add_argument(
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'-q', '--quality_check', action='store_true',
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help='Enable quality check using sound_quality_check on all '
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'sounds marqued as not good'
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)
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parser.add_argument(
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'-s', '--scan', action='store_true',
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help='Scan programs directories for changes, plus check for a '
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' matching diffusion on sounds that have not been yet assigned'
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)
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parser.add_argument(
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'-m', '--monitor', action='store_true',
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help='Run in monitor mode, watch for modification in the filesystem '
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'and react in consequence'
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)
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def handle(self, *args, **options):
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if options.get('scan'):
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self.scan()
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if options.get('quality_check'):
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self.check_quality(check=(not options.get('scan')))
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if options.get('monitor'):
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self.monitor()
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