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#!/usr/bin/perl |
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|
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package Sack::Server; |
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|
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use warnings; |
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use strict; |
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|
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my $debug = 0; |
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|
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use IO::Socket::INET; |
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use IO::Select; |
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|
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use Data::Dump qw(dump); |
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use Storable qw(); |
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use File::Slurp; |
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use Cwd qw(abs_path); |
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|
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use lib '/srv/Sack/lib'; |
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use Sack::Merge; |
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use Sack::Server::HTTP; |
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use Sack::Server::HTML; |
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use Sack::Server::Gnuplot; |
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|
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my @cloud; |
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my $cloud_path = $ENV{CLOUD} || "etc/cloud"; |
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die "start with: CLOUD=etc/cloud perl -I/srv/Sack/lib $0\n" unless -e $cloud_path; |
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@cloud = read_file $cloud_path; |
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@cloud = map { chomp $_; $_ } @cloud; |
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|
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warn "# cloud ",dump( @cloud ); |
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|
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my $listen_port = 4444; |
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my $http_port = 4480; |
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|
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my $node_path = abs_path $0; |
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$node_path =~ s{Server}{Client}; |
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|
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my $lsn = IO::Socket::INET->new(Listen => 1, LocalPort => $listen_port, Reuse => 1) or die "$listen_port $!"; |
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my $www = IO::Socket::INET->new(Listen => 1, LocalPort => $http_port, Reuse => 1) or die "$http_port $!"; |
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my $sel = IO::Select->new($lsn); |
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$sel->add( $www ); |
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|
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my $info; |
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|
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sub fork_ssh { |
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my ( $port, $host ) = @_; |
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|
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if ( my $pid = fork ) { |
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# parent |
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$info->{forked}->{$port} = $pid; |
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$info->{pending}->{$port} = 'forked'; |
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return $port; |
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|
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} elsif ( ! defined $pid ) { |
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warn "can't fork $host $port"; |
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return; |
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} else { |
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# child |
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warn "[$port] cpio last version\n"; |
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system "find /srv/Sack/ | cpio --create --dereference | ssh -T -F $cloud_path.ssh $host cpio --extract --make-directories --unconditional"; |
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|
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my $cmd = qq|ssh -F $cloud_path.ssh -R $port:127.0.0.1:$listen_port $host $node_path $port|; |
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warn "# exec: $cmd\n"; |
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exec $cmd; |
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} |
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} |
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|
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my $node_port = 4000; |
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|
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foreach my $host ( @cloud ) { |
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fork_ssh( $node_port++, $host ); |
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} |
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|
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my $session; |
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|
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sub all_ports { keys %{ $session->{port} } } |
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|
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sub to_all { |
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my $data = shift; |
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foreach my $port ( all_ports ) { |
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warn ">>>> [$port]\n" if $debug; |
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Storable::store_fd( $data, $session->{port}->{$port} ); |
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} |
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} |
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|
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our @shard_load_queue; |
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sub load_shard { |
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my $shard = shift @_ || return; |
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|
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warn "# load_shard $shard\n"; |
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|
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$shard .= '/*' if -d $shard; |
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|
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my @shards = glob $shard; |
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|
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if ( ! @shards ) { |
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warn "no shards for $shard\n"; |
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return; |
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} |
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|
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foreach my $s ( @shards ) { |
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if ( my $node = $info->{shard}->{$s} ) { |
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next if $node =~ m{^\d+$}; # not node number |
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} |
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$info->{shard}->{$s} = 'wait'; |
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push @shard_load_queue, $s; |
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warn "queued $s for loading\n"; |
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} |
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to_all { load => $shard }; |
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$info->{pending}->{$_} = 'load' foreach all_ports; |
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} |
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|
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sub run_view { |
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my ( $path ) = @_; |
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if ( ! -r $path ) { |
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warn "ERROR view $path: $!"; |
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return; |
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} |
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my $code = read_file $path; |
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Sack::Merge->clean; |
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delete( $info->{view} ); |
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delete( $info->{merge} ); |
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delete( $info->{shard} ); |
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$info->{pending}->{$_} = 'view' foreach all_ports; |
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to_all { code => $code, view => $path }; |
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}; |
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|
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our @responses; |
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|
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while (1) { |
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for my $sock ($sel->can_read(1)) { |
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if ($sock == $lsn) { |
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my $new = $lsn->accept; |
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$sel->add($new); |
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$session->{peerport}->{ $new->peerport } = $new; |
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warn "[socket] connect\n"; |
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Storable::store_fd( { ping => 1 }, $new ); |
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} elsif ( $sock == $www ) { |
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my $client = $www->accept; |
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Sack::Server::HTTP::request( $client, sub { |
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my ( $send, $method, $param ) = @_; |
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|
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if ( $method =~ m{views} ) { |
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run_view $method; |
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print $send "HTTP/1.0 302 $method\r\nLocation: /\r\n\r\n"; |
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return 1; |
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} elsif ( $method =~ m{^/tmp/sack} ) { |
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load_shard $method; |
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print $send "HTTP/1.0 302 $method\r\nLocation: /\r\n\r\n"; |
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return 1; |
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} elsif ( $method =~ m{^/out/(.+)} ) { |
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print $send "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n"; |
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Sack::Server::HTML::send_out( $send, Sack::Merge->out, $1, $param ); |
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return 1; |
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} elsif ( $method =~ m{^/gnuplot} ) { |
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eval { |
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my $path = Sack::Server::Gnuplot::date( Sack::Merge->out, $param ); |
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if ( -e $path ) { |
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print $send "HTTP/1.0 200 OK\r\nContent-Type: image/png\r\n\r\n"; |
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open(my $fh, '<', $path) || die $path; |
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my $b; |
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while ( read($fh, $b, 4096) ) { |
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print $send $b; |
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} |
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return 1; |
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} else { |
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print $send "HTTP/1.0 404 no graph\r\n\r\n"; |
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return 1; |
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} |
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}; |
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warn "ERROR: $@" if $@; |
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} |
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|
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my $refresh = $param->{refresh}; |
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$refresh = 1 if grep { $info->{pending}->{$_} ne 'forked' } keys %{ $info->{pending} }; |
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# we don't care about refresh is nodes are stuck in forked state! |
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|
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print $send "HTTP/1.0 200 OK\r\nContent-Type: text/html" |
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, ( $refresh ? "\r\nRefresh: $refresh" : '' ) |
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, "\r\n\r\n" |
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, ( $refresh ? qq|<span style="color: #888; float:right">$refresh</span>| : '' ) |
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; |
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|
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print $send qq| |
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|
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<style type="text/css"> |
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|
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.running { |
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color: #f00; |
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} |
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|
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|
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.forked { |
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color: #888; |
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} |
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|
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.ping { |
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color: #0f0; |
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} |
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|
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.load { |
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color: #f00; |
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} |
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|
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.view { |
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color: #00f; |
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} |
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|
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.shards { |
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font-family: monospace; |
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// line-height: 0.8em; |
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color: #0f0; |
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} |
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|
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.send { |
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color: #ff0; |
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} |
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|
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.wait { |
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color: #f00; |
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} |
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|
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|
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</style> |
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|
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|; |
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|
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my $out = Sack::Merge->out; |
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if ( my $li = join("\n", map { qq|<li><input type=checkbox name=filter value="$_"><a href="/out/$_" target="$_">$_</a>| } keys %$out ) ) { |
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print $send qq|<h1>Results</h1><form method="get" target="gnuplot" action="/gnuplot/"><ul>$li</ul><input type=submit value="Show checked"></form><img src="/gnuplot/">\n|; |
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} |
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|
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print $send qq|<h1>Views</h1><ul>| |
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, join("\n", map { |
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my $view = $_; |
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my $html = ''; |
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if ( my $s = $info->{view}->{$view} ) { |
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my @nodes = sort keys %$s; |
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my $total = 0; |
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$html .= qq|<table><tr><th>node</th><th>rows</th><th>shards</th><th>∑</th><th>merge</th></tr>|; |
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foreach my $node ( @nodes ) { |
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my $h = ''; |
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my $shard = 0; |
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foreach my $path ( sort keys %{ $s->{$node} } ) { |
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my $affected = $s->{$node}->{$path}; |
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my $n = '?'; |
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$n = $1 if $path =~ m{/(\w)\w+/\d+}; |
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my $class = $affected == 0 ? 'style="color: #888"' : ''; |
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$h .= qq|<tt title="$affected $path"$class>$n</tt>|; |
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$shard += $affected; |
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$total += $affected; |
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} |
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my $merge = $info->{merge}->{$view}->{$node} || '?'; |
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$html .= qq|<tr><td><tt>$node</tt></td><td>$shard</td><td>$h</td><td>$total</td><td>$merge</td></tr>\n|; |
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} |
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|
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$html .= qq|</table>|; |
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}; |
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qq|<li><a href="$view">$view</a>$html| |
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} glob '/srv/Sack/views/*/*.pl' ) |
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, qq|</ul>| |
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; |
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|
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print $send qq|<h1>Nodes</h1>|; |
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foreach my $node ( keys %{ $info->{forked} } ) { |
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my $attr = ''; |
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if ( my $pending = $info->{pending}->{$node} ) { |
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$attr .= qq| class="$pending"|; |
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} |
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print $send qq|<tt$attr>$node</tt>\n|; |
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} |
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|
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print $send qq|<h1>Shards</h1><ul>|; |
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foreach my $path ( glob '/tmp/sack/*' ) { |
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print $send qq|<li><a href="$path">$path</a><div class="shards">|; |
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foreach my $s ( sort grep { m/$path/ } keys %{ $info->{shard} } ) { |
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my $i = $info->{shard}->{$s}; |
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print $send qq|<span class="$i" title="$s">$i</span> |; |
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} |
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print $send qq|</div>|; |
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} |
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print $send qq|</ul>|; |
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|
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if ( $param->{info} ) { |
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print $send qq|<a href="?info=0">hide info</a>|; |
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print $send '<pre>', dump($info), '</pre>' |
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} else { |
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print $send qq|<a href="?info=1">show info</a>|; |
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} |
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return 1; |
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} ); |
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} else { |
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my $data = eval { Storable::fd_retrieve( $sock ) }; |
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if ( $@ ) { |
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delete $session->{$sock}; |
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warn "[socket] disconnect: $@\n"; |
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$sel->remove($sock); |
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$sock->close; |
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} else { |
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warn "<<<< ", dump($data), $/ if $debug; |
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|
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if ( my $path = $data->{shard} ) { |
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$info->{shard}->{ $path } = $data->{port}; |
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# FIXME will need push for multiple copies of shards |
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} |
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|
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if ( my $repl = $data->{repl} ) { |
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my $response = { repl_pid => $$ }; |
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if ( $repl =~ m/ping/ ) { |
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to_all { ping => 1 }; |
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} elsif ( $repl =~ m/info/ ) { |
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$response->{info} = $info; |
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} elsif ( $repl =~ m{load\s*(\S+)?} ) { |
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load_shard $1; |
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} elsif ( $repl =~ m{view\s*(\S+)?} ) { |
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run_view $1; |
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} elsif ( $repl =~ m{out} ) { |
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my $out = Sack::Merge->out; |
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warn "out ",dump( $out ); |
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$response->{out} = $out; |
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} elsif ( $repl =~ m{clean} ) { |
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delete $info->{shard}; |
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to_all { clean => 1 }; |
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} elsif ( $repl eq 'exit' ) { |
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to_all { exit => 1 }; |
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sleep 1; |
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exit; |
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} elsif ( $repl eq '.' ) { |
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$response->{'.'} = [ @responses ]; |
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@responses = (); |
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} elsif ( $repl =~ m{(\w+)\s*(.+)?} ) { |
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to_all { $1 => $2 }; |
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} else { |
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$response->{error}->{repl} = $repl; |
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} |
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Storable::store_fd( $response, $sock ); |
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} elsif ( $data->{ping} ) { |
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my $port = $data->{port}; |
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delete( $info->{pending}->{$port} ) if $info->{pending}->{$port} eq 'forked'; |
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$session->{port}->{ $data->{port} } = $sock; |
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} elsif ( defined $data->{load} && $data->{load} eq 'shard' ) { |
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if ( my $path = shift @shard_load_queue ) { |
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$info->{shard}->{$path} = 'read'; |
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my $shard = Storable::retrieve $path; |
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$info->{shard}->{$path} = 'send'; |
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warn ">>>> [", $data->{port}, "] sending shard $path\n"; |
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Storable::store_fd( { path => $path, shard => $shard }, $sock ); |
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} else { |
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warn "no more shards for [", $data->{port}, "]\n"; |
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delete $info->{pending}->{ $data->{port} }; |
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} |
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} elsif ( exists $data->{out} ) { |
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my $added = Sack::Merge->add( $data->{out} ) if defined $data->{out}; |
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$info->{merge}->{ $data->{view} }->{ $data->{port} } = $added; |
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$info->{view }->{ $data->{view} }->{ $data->{port} } = $data->{on_shard}; |
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# refresh shard allocation |
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$info->{shard}->{ $_ } = $data->{port} foreach keys %{ $data->{on_shard} }; |
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delete $info->{pending}->{ $data->{port} }; |
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} elsif ( exists $data->{port} ) { |
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push @responses, $data; |
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warn "# ",dump($data),$/; |
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} else { |
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warn "UNKNOWN ",dump($data); |
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} |
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} |
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} |
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} |
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} |
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