114 lines
3.9 KiB
Python
114 lines
3.9 KiB
Python
from __future__ import unicode_literals
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import logging
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import os
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import time
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from mopidy import commands, exceptions, ext
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from mopidy.audio import scan
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from mopidy.utils import path
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from . import translator
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logger = logging.getLogger('mopidy.backends.local.commands')
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class LocalCommand(commands.Command):
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def __init__(self):
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super(LocalCommand, self).__init__()
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self.add_child('scan', ScanCommand())
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class ScanCommand(commands.Command):
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help = "Scan local media files and populate the local library."
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def run(self, args, config):
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media_dir = config['local']['media_dir']
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scan_timeout = config['local']['scan_timeout']
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excluded_file_extensions = config['local']['excluded_file_extensions']
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excluded_file_extensions = set(
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file_ext.lower() for file_ext in excluded_file_extensions)
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# TODO: select updater / library to use by name
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updaters = ext.registry['local:library']
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if not updaters:
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logger.error('No usable library updaters found.')
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return 1
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elif len(updaters) > 1:
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logger.error('More than one library updater found. '
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'Provided by: %s', ', '.join(updaters))
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return 1
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local_updater = updaters[0](config)
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uri_path_mapping = {}
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uris_in_library = set()
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uris_to_update = set()
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uris_to_remove = set()
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tracks = local_updater.load()
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logger.info('Checking %d tracks from library.', len(tracks))
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for track in tracks:
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uri_path_mapping[track.uri] = translator.local_track_uri_to_path(
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track.uri, media_dir)
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try:
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stat = os.stat(uri_path_mapping[track.uri])
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if int(stat.st_mtime) > track.last_modified:
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uris_to_update.add(track.uri)
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uris_in_library.add(track.uri)
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except OSError:
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logger.debug('Missing file %s', track.uri)
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uris_to_remove.add(track.uri)
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logger.info('Removing %d missing tracks.', len(uris_to_remove))
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for uri in uris_to_remove:
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local_updater.remove(uri)
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logger.info('Checking %s for unknown tracks.', media_dir)
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for relpath in path.find_files(media_dir):
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file_extension = os.path.splitext(relpath)[1]
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if file_extension.lower() in excluded_file_extensions:
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logger.debug('Skipped %s: File extension excluded.', uri)
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continue
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uri = translator.path_to_local_track_uri(relpath)
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if uri not in uris_in_library:
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uris_to_update.add(uri)
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uri_path_mapping[uri] = os.path.join(media_dir, relpath)
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logger.info('Found %d unknown tracks.', len(uris_to_update))
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logger.info('Scanning...')
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scanner = scan.Scanner(scan_timeout)
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progress = Progress(len(uris_to_update))
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for uri in sorted(uris_to_update):
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try:
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data = scanner.scan(path.path_to_uri(uri_path_mapping[uri]))
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track = scan.audio_data_to_track(data).copy(uri=uri)
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local_updater.add(track)
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logger.debug('Added %s', track.uri)
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except exceptions.ScannerError as error:
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logger.warning('Failed %s: %s', uri, error)
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progress.increment()
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logger.info('Commiting changes.')
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local_updater.commit()
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return 0
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# TODO: move to utils?
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class Progress(object):
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def __init__(self, total):
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self.count = 0
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self.total = total
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self.start = time.time()
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def increment(self):
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self.count += 1
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if self.count % 1000 == 0 or self.count == self.total:
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duration = time.time() - self.start
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remainder = duration / self.count * (self.total - self.count)
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logger.info('Scanned %d of %d files in %ds, ~%ds left.',
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self.count, self.total, duration, remainder)
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