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root |
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#!/opt/bin/perl |
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BEGIN { require "common.pl" } |
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our ($TXN, %stat, $db_env, $TPB, $db_info, $TODAY); |
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use common::sense; |
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our $NUM_DOWNLOADERS = 6; |
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our $db_http = table "http"; |
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our $db_torrent = table "torrent"; |
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our $TODO; |
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############################################################################# |
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my $pool = new Coro::Channel 10000; |
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my @pool = map { |
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async { |
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while (my $args = $pool->get) { |
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my $cb = pop @$args; |
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$cb->(@$args); |
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} |
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} |
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} 1..1; |
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sub pool(&@) { |
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$pool->put ([@_]); |
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} |
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sub http_extract($) { |
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$_[0] =~ / id='NumComments'>(\d+)</ |
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or die "no numcomments in <$_[0]>\n"; |
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$1 |
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} |
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my $finish = new Coro::Channel 100; |
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my @finishers = async { |
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{ |
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my $txn; |
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$Coro::current->swap_sv (\$TXN, \$txn); |
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} |
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while (my $job = $finish->get) { |
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# $TXN = $db_env->txn_begin; |
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my ($i, $html, $torrent) = @$job; |
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$html =~ s/^.*?Details for this torrent//s; |
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$html =~ s/<div id="foot".*$//s; |
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my $info = iget $i; |
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my $old = get $db_http, $i; |
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unless ($!) { |
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my $old_html = dic_decompress 0, $old; |
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if ((http_extract $html) ne eval { http_extract $old_html }) { |
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++$stat{change}; |
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$info->[1] = ($info->[1] >> 1) || 1; |
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} else { |
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++$stat{same}; |
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$info->[1] *= 2; |
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$info->[1] = 365 if $info->[1] > 365; |
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} |
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} |
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$stat{data} += length $html; |
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$html = dic_compress 0, $html if length $html; |
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$stat{cmpr} += length $html; |
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$stat{torrent} += length $torrent; |
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put $db_torrent, $i, $torrent if defined $torrent; |
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put $db_http, $i, $html; |
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iput $i, [$TODAY, $info->[1]]; # check every day |
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# db_txn_finish $TXN; |
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# die "transaction failed" if $!; |
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remove $TODO $i; |
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} |
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}; |
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############################################################################# |
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my $download = new Coro::Channel 200; |
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my @downloaders = map { |
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async { |
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while (my $i = $download->get) { |
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my ($html, $hdr) = GET "https://$TPB/torrent/$i"; |
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if ($hdr->{Status} == 200) { |
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BDB::db_exists $db_torrent, undef, $i, 0; |
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if ($!) { |
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if ($html =~ m%<a href="([^"]+)" title="Torrent File"%) { |
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my $url = $1; |
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$url =~ s/ /%20/g; |
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$url =~ s%^//%https://%; |
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$url =~ s%^/+%https://$TPB/%; |
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my ($torrent, $hdr) = GET $url; |
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if ($hdr->{Status} == 200) { |
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$finish->put ([$i, $html, $torrent]); |
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} elsif ($hdr->{Status} == 404) { |
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++$stat{notorrent}; |
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$finish->put ([$i, $html, undef]); |
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#warn "https://$TPB/torrent/$i $url\n"; |
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#remove $TODO $i; |
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} else { |
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warn "$url https://$TPB/torrent/$i: status $hdr->{Status}\n"; |
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} |
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} else { |
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++$stat{notorrentlink}; |
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$finish->put ([$i, $html, undef]); |
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} |
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} else { |
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$finish->put ([$i, $html, undef]); |
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} |
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} elsif ($hdr->{Status} == 404) { |
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remove $TODO $i; |
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del $db_info, $i; |
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} else { |
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warn "https://$TPB/torrent/$i: status $hdr->{Status}\n"; |
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} |
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} |
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} |
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} 1..$NUM_DOWNLOADERS; |
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############################################################################# |
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if (0) { |
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#sput "last_recent", 7100000; |
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sput "last_recent", 3210000; |
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} |
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if (0) { |
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db_env_txn_checkpoint $db_env; |
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db_compact $db_info; |
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db_env_txn_checkpoint $db_env; |
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return; |
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} |
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async { |
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$TODO = new Set::IntSpan sget "todo"; |
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if (1) { |
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my $last = sget "last_recent"; |
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my ($html, $hdr) = GET "https://$TPB/recent"; |
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$html =~ m%<div class="detName">\s*<a href="/torrent/(\d+)/% |
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or die "https://$TPB/recent: unable to parse recent torrent ($html)"; |
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my $next = $1; |
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#$next = 7043798;#d# |
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$TODO->U ([[$last, $next]]); |
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sput todo => "$TODO"; |
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sput last_recent => $next; |
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} |
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my $sputter = AE::timer 10, 10, sub { |
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async_pool { |
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sput todo => "$TODO"; |
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}; |
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}; |
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# new torrents |
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if (1) { |
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for (spans $TODO) { |
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for my $i ($_->[0] .. $_->[1]) { |
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$stat{stat} = $i; |
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BDB::db_exists $db_http, undef, $i, 0; |
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unless ($!) { |
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BDB::db_exists $db_torrent, undef, $i, 0; |
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unless ($!) { |
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# already have both |
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remove $TODO $i; |
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next; |
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} |
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} |
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iput $i, [0, 1]; |
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# $download->put ($i);#d# |
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} |
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} |
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} |
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# refresh |
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if (1) { |
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my $c = $db_info->cursor (undef, 0); |
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my ($k, $v); |
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db_c_get $c, $k, $v, BDB::SET_RANGE; |
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my @i; |
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until ($!) { |
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my $info = decode_cbor $v; |
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push @i, $k |
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# $download->put ($k) |
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if $info->[0] + $info->[1] <= $TODAY; |
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db_c_get $c, $k, $v, BDB::NEXT; |
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#d# last if @i > 200000;#d# |
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} |
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undef $c; |
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$download->put ($_) |
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for @i; |
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} |
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$download->shutdown; |
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$_->join |
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for @downloaders; |
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$finish->shutdown; |
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$_->join for @finishers; |
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$pool->shutdown; |
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$_->join for @pool; |
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sput todo => "$TODO"; |
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EV::unloop; |
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}; |
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EV::loop; |
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