7 use Log::Any::Adapter Stderr => log_level => 'trace';
9 use Syntax::Keyword::Try;
12 use Time::Duration qw(duration_exact);
13 use Time::Duration::Parse qw(parse_duration);
14 has $log_level :reader = 'warn';
15 has $target_queue_length :reader = 10;
16 has $mpd_host :reader = undef;
17 has $mpd_port :reader = undef;
18 has $db_path :reader = 'mpd-feeder';
19 has $db_user :reader = undef;
20 has $db_password :reader = undef;
21 has $min_album_interval :reader = parse_duration('5h');
22 has $min_song_interval :reader = parse_duration('13d');
23 has $min_artist_interval :reader = parse_duration('1h 15m');
24 has $skip_db_update :reader = 0;
26 method parse_command_line {
27 Getopt::Long::GetOptions(
28 'log-level=s' => \$log_level,
29 'skip-db-update!' => \$skip_db_update,
30 'tql|target-queue-length=n' => \$target_queue_length,
31 'mpd-host=s' => \$mpd_host,
32 'mpd-port=s' => \$mpd_port,
33 'db-path=s' => \$db_path,
34 'db-user=s' => \$db_user,
35 'min-album-interval=s' => sub {
36 $min_album_interval = parse_duration(pop);
38 'min-sing-interval=s' => sub {
39 $min_song_interval = parse_duration(pop);
41 'min-artist-interval=s' => sub {
42 $min_artist_interval = parse_duration(pop);
47 sub handle_config_option( $ini, $section, $option, $target_ref,
50 return undef unless exists $ini->{$section}{$option};
52 my $value = $ini->{$section}{$option};
54 $value = $converter->($value) if $converter;
56 $$target_ref = $value;
61 say "log_level = $log_level";
64 say "host = " . ( $mpd_host // '' );
65 say "port = " . ( $mpd_port // '' );
66 say "target-queue-length = $target_queue_length";
69 say "target-length = $target_queue_length";
70 say "min-song-interval = " . duration_exact($min_song_interval);
71 say "min-album-interval = " . duration_exact($min_album_interval);
72 say "min-artist-interval = " . duration_exact($min_artist_interval);
75 say "path = " . ( $db_path // '' );
76 say "user = " . ( $db_user // '' );
77 say "password = " . ( $db_password // '' );
80 method parse_config_file($path) {
81 use Config::INI::Reader;
82 my $ini = Config::INI::Reader->read_file($path);
84 handle_config_option( $ini => mpd => host => \$mpd_host );
85 handle_config_option( $ini => mpd => port => \$mpd_port );
87 handle_config_option( $ini => 'mpd-feeder' => log_level => \$log_level );
90 $ini => queue => 'target-length' => \$target_queue_length );
92 $ini => queue => 'min-song-interval' => \$min_song_interval,
96 $ini => queue => 'min-album-interval' => \$min_album_interval,
100 $ini => queue => 'min-artist-interval' => \$min_artist_interval,
104 handle_config_option( $ini => db => path => \$db_path );
105 handle_config_option( $ini => db => user => \$db_user );
106 handle_config_option( $ini => db => password => \$db_password );
108 # FIXME: complain about unknown sections/parameters
113 has $cfg_file :reader;
117 has $db_needs_update :writer = 1;
120 use constant DEFAULT_CONFIG_FILE => '/etc/mpd-feeder/mpd-feeder.conf';
124 use Log::Any qw($log);
125 use IO::Async::Signal;
129 Getopt::Long::Configure('pass_through');
130 Getopt::Long::GetOptions('cfg|config=s' => \$cfg_file);
131 Getopt::Long::Configure('no_pass_through');
133 $cfg_file //= DEFAULT_CONFIG_FILE if -e DEFAULT_CONFIG_FILE;
137 $db_needs_update = 0 if $opt->skip_db_update;
141 my $new_opt = Options->new;
143 $new_opt->parse_config_file($cfg_file) if $cfg_file;
145 $new_opt->parse_command_line;
147 Log::Any::Adapter->set( Stderr => log_level => $new_opt->log_level );
155 my %conn = ( auto_connect => 1 );
156 $conn{host} = $opt->mpd_host if $opt->mpd_host;
157 $conn{port} = $opt->mpd_port if $opt->mpd_port;
159 $mpd = Net::Async::MPD->new(%conn);
162 IO::Async::Signal->new(
165 $log->debug("SIGHUP received. Stopping loop");
166 $mpd->loop->stop('reload');
175 $db = DBI->connect( "dbi:Pg:dbname=" . $opt->db_path,
176 $opt->db_user, $opt->db_password,
177 { RaiseError => 1, PrintError => 0, AutoCommit => 1 } );
179 $log->info( "Connected to database " . $opt->db_path );
180 $db_generation = $self->db_get_option('generation');
181 $log->debug("DB generation is $db_generation");
185 method db_get_option($name) {
186 my $sth = $db->prepare_cached("select $name from options");
188 my @result = $sth->fetchrow_array;
193 method db_set_option( $name, $value ) {
194 my $sth = $db->prepare_cached("update options set $name = ?");
195 $sth->execute($value);
198 method db_store_song($song, $artist, $album) {
199 return unless length($song) and length($artist) and length($album);
202 <<'SQL')->execute( $song, $artist, $album, $db_generation );
203 INSERT INTO songs(path, artist, album, generation)
204 VALUES($1, $2, $3, $4)
205 ON CONFLICT ON CONSTRAINT songs_pkey DO
206 UPDATE SET artist = $2
210 $db->prepare_cached(<<'SQL')->execute( $artist, $album, $db_generation );
211 INSERT INTO albums(artist, album, generation)
213 ON CONFLICT ON CONSTRAINT albums_pkey DO
214 UPDATE SET generation = $3
216 $db->prepare_cached(<<'SQL')->execute( $artist, $db_generation );
217 INSERT INTO artists(artist, generation)
219 ON CONFLICT ON CONSTRAINT artists_pkey DO
220 UPDATE SET generation = $2
224 method db_remove_stale_entries {
226 $db->prepare_cached('DELETE FROM songs WHERE generation <> ?');
227 $sth->execute($db_generation);
228 $log->debug( sprintf( "Deleted %d stale songs", $sth->rows ) );
230 $sth = $db->prepare_cached('DELETE FROM albums WHERE generation <> ?');
231 $sth->execute($db_generation);
232 $log->debug( sprintf( "Deleted %d stale albums", $sth->rows ) );
235 $db->prepare_cached('DELETE FROM artists WHERE generation <> ?');
236 $sth->execute($db_generation);
237 $log->debug( sprintf( "Deleted %d stale artists", $sth->rows ) );
240 method db_note_song_qeued($item) {
242 'UPDATE songs SET last_queued=current_timestamp WHERE path=?')
243 ->execute( $item->{song} );
245 'UPDATE artists SET last_queued=CURRENT_TIMESTAMP WHERE artist=?')
246 ->execute( $item->{artist} );
248 'UPDATE albums SET last_queued=CURRENT_TIMESTAMP WHERE artist=? AND album=?'
249 )->execute( $item->{artist}, $item->{album} );
252 method update_db($force = undef) {
253 if (!$db_needs_update and !$force) {
254 $log->debug("Skipping DB update");
258 $log->info('Updating song database');
262 my $rows = $mpd->send('listallinfo')->get;
270 foreach my $entry (@$rows) {
271 next unless exists $entry->{file};
272 $self->db_store_song( $entry->{file},
273 $entry->{Artist}, $entry->{Album} );
277 $log->info("Updated data about $song_count songs");
279 $self->db_remove_stale_entries;
281 $self->db_set_option( generation => $db_generation );
285 $db_needs_update = 0;
298 method db_find_suitable_songs($num) {
303 my $sth = $db->prepare_cached(<<SQL);
304 SELECT s.path, s.artist, s.album
306 JOIN artists ar ON ar.artist=s.artist
307 JOIN albums al ON al.album=s.album
308 WHERE (s.last_queued IS NULL OR s.last_queued < CURRENT_TIMESTAMP - (? || ' seconds')::interval)
309 AND (ar.last_queued IS NULL OR ar.last_queued < CURRENT_TIMESTAMP - (? || ' seconds')::interval)
310 AND (al.last_queued IS NULL OR al.last_queued < CURRENT_TIMESTAMP - (? || ' seconds')::interval)
311 AND NOT EXISTS (SELECT 1 FROM unwanted_artists uar WHERE uar.artist = s.artist)
312 AND NOT EXISTS (SELECT 1 FROM unwanted_albums ual WHERE ual.album = s.album)
317 $opt->min_song_interval,
318 $opt->min_artist_interval,
319 $opt->min_album_interval,
322 while ( my @row = $sth->fetchrow_array ) {
324 { song => $row[0], artist => $row[1], album => $row[2] };
330 method db_add_unwanted_artist($artist) {
336 INSERT INTO unwanted_artists(artist, generation)
339 undef, $artist, $db_generation
346 $log->debug("PostgreSQL error: $err");
347 $log->debug( "SQLSTATE = " . $db->state );
348 return 0 if $db->state eq '23505';
354 method db_del_unwanted_artist($artist) {
359 DELETE FROM unwanted_artists
366 method queue_songs($num = undef, $callback = undef) {
369 $mpd->send('playlist')->on_done(
371 my $present = scalar @{ $_[0] };
373 $log->notice("Playlist contains $present songs");
374 if ( $present < $opt->target_queue_length ) {
376 $opt->target_queue_length - $present, $callback );
379 $callback->() if $callback;
387 my @list = $self->db_find_suitable_songs($num);
389 die "Found no suitable songs" unless @list;
391 if ( @list < $num ) {
394 'Found only %d suitable songs instead of %d',
400 $log->info("About to add $num songs to the playlist");
403 for my $song (@list) {
404 my $path = $song->{song};
409 $log->debug( "Adding " . join( ', ', map {"«$_»"} @paths ) );
412 push @commands, [ add => "\"$_\"" ];
415 my $f = $mpd->send( \@commands );
416 $f->on_fail( sub { die @_ } );
419 $self->db_note_song_qeued($_) for @list;
420 $callback->(@_) if $callback;
425 method prepare_to_wait_idle {
426 $log->trace('declaring idle mode');
427 $mpd->send('idle database playlist')->on_done(
431 if ( $result->{changed} eq 'database' ) {
432 $db_needs_update = 1;
433 $self->prepare_to_wait_idle;
435 elsif ( $result->{changed} eq 'playlist' ) {
436 $self->queue_songs( undef,
437 sub { $self->prepare_to_wait_idle } );
442 "Unknown result from idle: " . to_json($result) );
443 $self->prepare_to_wait_idle;
452 die "Connection to MPD lost";
456 $self->prepare_to_wait_idle;
463 if ($db->{ActiveKids}) {
464 $log->warn("$db->{ActiveKids} active DB statements");
465 for my $st ( @{ $db->{ChildHandles} } ) {
466 next unless $st->{Active};
467 while(my($k,$v) = each %$st) {
468 $log->debug("$k = ".($v//'<NULL>'));
479 my $feeder = Feeder->new();
482 my $cmd = shift @ARGV;
484 if ($cmd eq 'dump-config') {
485 die "dump-config command accepts no arguments\n" if @ARGV;
491 if ( $cmd eq 'add-unwanted-artist' ) {
492 die "Missing command arguments\n" unless @ARGV;
493 $feeder->set_db_needs_update(0);
494 for my $artist (@ARGV) {
495 if ( $feeder->db_add_unwanted_artist($artist) ) {
496 $log->info("Artist '$artist' added to the unwanted list\n");
499 $log->warn("Artist '$artist' already in the unwanted list\n");
505 if ( $cmd eq 'del-unwanted-artist' ) {
506 die "Missing command arguments\n" unless @ARGV;
507 $feeder->set_db_needs_update(0);
508 for my $artist (@ARGV) {
509 if ( $feeder->db_del_unwanted_artist($artist) ) {
510 $log->info("Artist '$artist' deleted from the unwanted list\n");
513 $log->warn("Artist '$artist' is not in the unwanted list\n");
519 if ( $cmd eq 'add-unwanted-album' ) {
520 die "NOT IMPLEMENTED\n";
523 if ( $cmd eq 'one-shot' ) {
524 die "one-shot command accepts no arguments\n" if @ARGV;
526 $feeder->queue_songs(undef, sub { exit });
527 $feeder->mpd->loop->run;
529 elsif ( $cmd eq 'single' ) {
530 die "single command accepts no arguments\n" if @ARGV;
532 $feeder->queue_songs(1, sub { exit });
533 $feeder->mpd->loop->run;
536 die "Unknown command '$cmd'";
541 $feeder->queue_songs( undef, sub { $feeder->run } );
543 $log->debug("Entering event loop. PID=$$");
545 my $result = $feeder->mpd->loop->run;
546 $log->trace( "Got loop result of " . ( $result // 'undef' ) );
548 if ('reload' eq $result) {
549 $log->notice("disconnecting");
552 exec( "$0", '--config', $feeder->cfg_file, '--skip-db-update' );