1 |
#!/usr/bin/perl |
2 |
|
3 |
package Sack::Server; |
4 |
|
5 |
use warnings; |
6 |
use strict; |
7 |
|
8 |
use IO::Socket::INET; |
9 |
use IO::Select; |
10 |
|
11 |
use Data::Dump qw(dump); |
12 |
use Storable qw(); |
13 |
use File::Slurp; |
14 |
use Cwd qw(abs_path); |
15 |
|
16 |
my @cloud; |
17 |
my $cloud_path = $ENV{CLOUD} || die "start with: CLOUD=etc/cloud perl -I/srv/Sack/lib $0\n"; |
18 |
@cloud = read_file $cloud_path; |
19 |
@cloud = map { chomp $_; $_ } @cloud; |
20 |
|
21 |
warn "# cloud ",dump( @cloud ); |
22 |
|
23 |
my $listen_port = 4444; |
24 |
|
25 |
my $node_path = abs_path $0; |
26 |
$node_path =~ s{Server}{Client}; |
27 |
|
28 |
my $lsn = IO::Socket::INET->new(Listen => 1, LocalPort => $listen_port, Reuse => 1) or die $!; |
29 |
my $sel = IO::Select->new($lsn); |
30 |
|
31 |
my $info; |
32 |
sub info { |
33 |
my $port = shift; |
34 |
push @{ $info->{$port} }, [ @_ ]; |
35 |
} |
36 |
|
37 |
sub fork_ssh { |
38 |
my ( $port, $host ) = @_; |
39 |
|
40 |
if ( my $pid = fork ) { |
41 |
# parent |
42 |
info $port => 'forked', $pid; |
43 |
return $port; |
44 |
|
45 |
} elsif ( ! defined $pid ) { |
46 |
warn "can't fork $host $port"; |
47 |
return; |
48 |
} else { |
49 |
# child |
50 |
my $cmd = qq|ssh -F $cloud_path.ssh -R $port:127.0.0.1:$listen_port $host $node_path $port|; |
51 |
warn "# exec: $cmd\n"; |
52 |
exec $cmd; |
53 |
} |
54 |
} |
55 |
|
56 |
my $node_port = 4000; |
57 |
|
58 |
foreach my $host ( @cloud ) { |
59 |
system "find /srv/Sack/ | cpio --create --dereference | ssh -T -F $cloud_path.ssh $host cpio --extract --make-directories --unconditional"; |
60 |
fork_ssh( $node_port++, $host ); |
61 |
} |
62 |
|
63 |
my $session; |
64 |
|
65 |
sub to_all { |
66 |
my $data = shift; |
67 |
foreach my $port ( keys %{ $session->{port} } ) { |
68 |
warn ">>>> [$port]\n"; |
69 |
Storable::store_fd( $data, $session->{port}->{$port} ); |
70 |
} |
71 |
} |
72 |
|
73 |
while (1) { |
74 |
for my $sock ($sel->can_read(1)) { |
75 |
if ($sock == $lsn) { |
76 |
my $new = $lsn->accept; |
77 |
$sel->add($new); |
78 |
$session->{peerport}->{ $new->peerport } = $new; |
79 |
warn "[socket] connect\n"; |
80 |
Storable::store_fd( { ping => 1 }, $new ); |
81 |
info 0 => 'ping', $new->peerport; |
82 |
} else { |
83 |
my $data = eval { Storable::fd_retrieve( $sock ) }; |
84 |
if ( $@ ) { |
85 |
delete $session->{$sock}; |
86 |
warn "[socket] disconnect: $@\n"; |
87 |
$sel->remove($sock); |
88 |
$sock->close; |
89 |
} else { |
90 |
warn "<<<< ", dump($data), $/; |
91 |
if ( $data->{repl} ) { |
92 |
my $response = { repl => $$ }; |
93 |
if ( $data->{repl} =~ m/ping/ ) { |
94 |
to_all { ping => 1 }; |
95 |
} elsif ( $data->{repl} =~ m/info/ ) { |
96 |
$response->{info} = $info; |
97 |
} |
98 |
Storable::store_fd( $response, $sock ); |
99 |
} elsif ( $data->{ping} ) { |
100 |
my $port = $data->{port}; |
101 |
info $port => 'ping', $port; |
102 |
$session->{port}->{ $data->{port} } = $sock; |
103 |
} |
104 |
} |
105 |
} |
106 |
} |
107 |
} |