lib/Sack/Server.pm

#!/usr/bin/perl

package Sack::Server;

use warnings;
use strict;

use IO::Socket::INET;
use IO::Select;

use Data::Dump qw(dump);
use Storable qw();
use File::Slurp;
use Cwd qw(abs_path);

use lib '/srv/Sack/lib';
use Sack::Merge;

my @cloud;
my $cloud_path = $ENV{CLOUD} || "etc/cloud";
die "start with: CLOUD=etc/cloud perl -I/srv/Sack/lib $0\n" unless -e $cloud_path;
@cloud = read_file $cloud_path;
@cloud = map { chomp $_; $_ } @cloud;

warn "# cloud ",dump( @cloud );

my $listen_port = 4444;

my $node_path = abs_path $0;
$node_path =~ s{Server}{Client};

my $lsn = IO::Socket::INET->new(Listen => 1, LocalPort => $listen_port, Reuse => 1) or die $!;
my $sel = IO::Select->new($lsn);

my $info;
sub info {
        my $port = shift;
        push @{ $info->{$port} }, [ @_ ];
}

sub fork_ssh {
        my ( $port, $host ) = @_;

        if ( my $pid = fork ) {
                # parent
                info $port => 'forked', $pid;
                return $port;

        } elsif ( ! defined $pid ) {
                warn "can't fork $host $port";
                return;
        } else {
                # child
                my $cmd = qq|ssh -F $cloud_path.ssh -R $port:127.0.0.1:$listen_port $host $node_path $port|;
                warn "# exec: $cmd\n";
                exec $cmd;
        }
}

my $node_port = 4000;

foreach my $host ( @cloud ) {
        system "find /srv/Sack/ | cpio --create --dereference | ssh -T -F $cloud_path.ssh $host cpio --extract --make-directories --unconditional";
        fork_ssh( $node_port++, $host );
}

my $session;

sub to_all {
        my $data = shift;
        foreach my $port ( keys %{ $session->{port} } ) {
                warn ">>>> [$port]\n";
                Storable::store_fd( $data, $session->{port}->{$port} );
        }
}

my @shard_paths;

while (1) {
        for my $sock ($sel->can_read(1)) {
                if ($sock == $lsn) {
                        my $new = $lsn->accept;
                        $sel->add($new);
                        $session->{peerport}->{ $new->peerport } = $new;
                        warn "[socket] connect\n";
                        Storable::store_fd( { ping => 1 }, $new );
                        info 0 => 'ping', $new->peerport;
                } else {
                        my $data = eval { Storable::fd_retrieve( $sock ) };
                        if ( $@ ) {
                                delete $session->{$sock};
                                warn "[socket] disconnect: $@\n";
                                $sel->remove($sock);
                                $sock->close;
                        } else {
                                warn "<<<< ", dump($data), $/;

                                if ( my $path = $data->{shard} ) {
                                        push @{ $info->{shard}->{ $data->{port} } }, $path;
                                }

                                if ( my $repl = $data->{repl} ) {
                                        my $response = { repl_pid => $$ };
                                        if ( $repl =~ m/ping/ ) {
                                                to_all { ping => 1 };
                                        } elsif ( $repl =~ m/info/ ) {
                                                $response->{info} = $info;
                                        } elsif ( $repl =~ m{load\s*(\S+)?} ) {
                                                my $name = $1 || 'shard';
                                                @shard_paths = glob "/tmp/sack/$name/*";
                                                warn "loading shard $name from ", dump( @shard_paths );
                                                to_all { load => $name };
                                        } elsif ( $repl =~ m{view\s*(\S+)?} ) {
                                                my $path = $1 || '/srv/Sack/views/00.demo.pl';
                                                my $code = read_file $path;
                                                Sack::Merge->clean;
                                                to_all { view => $code, path => $path };
                                                $response->{view}->{$path}->{running};
                                        } elsif ( $repl =~ m{debug\s*(.+)?} ) {
                                                to_all { debug => $1 };
                                        } elsif ( $repl =~ m{out} ) {
                                                my $out = Sack::Merge->out;     
                                                warn "out ",dump( $out );
                                                $response->{out} = $out;
                                        } elsif ( $repl =~ m{clean} ) {
                                                delete $info->{shard};
                                                to_all { clean => 1 };
                                        } else {
                                                $response->{error}->{unknown} = $data;
                                        }
                                        Storable::store_fd( $response, $sock );
                                } elsif ( $data->{ping} ) {
                                        my $port = $data->{port};
                                        info $port => 'ping', $port;
                                        $session->{port}->{ $data->{port} } = $sock;
                                } elsif ( $data->{load} eq 'shard' ) {
                                        if ( my $path = shift @shard_paths ) {
                                                warn "retrieve $path ", -s $path;
                                                my $shard = Storable::retrieve $path;
                                                warn ">>>> [", $data->{port}, "] sending shard $path\n";
                                                Storable::store_fd( { path => $path, shard => $shard }, $sock );
                                        } else {
                                                warn "no more shards for [", $data->{port}, "]\n";
                                        }
                                } elsif ( defined $data->{out} ) {
                                        Sack::Merge->add( $data->{out} );
                                } else {
                                        warn "UNKNOWN ",dump($data);
                                }
                        }
                }
        }
}
1	dpavlin	163	#!/usr/bin/perl
2
3	dpavlin	179	package Sack::Server;
4
5	dpavlin	163	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	dpavlin	169	use File::Slurp;
14	dpavlin	176	use Cwd qw(abs_path);
15	dpavlin	163
16	dpavlin	200	use lib '/srv/Sack/lib';
17			use Sack::Merge;
18
19	dpavlin	179	my @cloud;
20	dpavlin	209	my $cloud_path = $ENV{CLOUD} \|\| "etc/cloud";
21			die "start with: CLOUD=etc/cloud perl -I/srv/Sack/lib $0\n" unless -e $cloud_path;
22	dpavlin	169	@cloud = read_file $cloud_path;
23			@cloud = map { chomp $_; $_ } @cloud;
24
25			warn "# cloud ",dump( @cloud );
26
27	dpavlin	163	my $listen_port = 4444;
28
29	dpavlin	176	my $node_path = abs_path $0;
30	dpavlin	181	$node_path =~ s{Server}{Client};
31	dpavlin	163
32	dpavlin	169	my $lsn = IO::Socket::INET->new(Listen => 1, LocalPort => $listen_port, Reuse => 1) or die $!;
33	dpavlin	163	my $sel = IO::Select->new($lsn);
34
35	dpavlin	166	my $info;
36			sub info {
37			my $port = shift;
38			push @{ $info->{$port} }, [ @_ ];
39			}
40
41	dpavlin	179	sub fork_ssh {
42	dpavlin	163	my ( $port, $host ) = @_;
43
44			if ( my $pid = fork ) {
45			# parent
46	dpavlin	166	info $port => 'forked', $pid;
47	dpavlin	163	return $port;
48
49			} elsif ( ! defined $pid ) {
50			warn "can't fork $host $port";
51			return;
52			} else {
53			# child
54	dpavlin	169	my $cmd = qq\|ssh -F $cloud_path.ssh -R $port:127.0.0.1:$listen_port $host $node_path $port\|;
55	dpavlin	163	warn "# exec: $cmd\n";
56			exec $cmd;
57			}
58			}
59
60			my $node_port = 4000;
61
62	dpavlin	169	foreach my $host ( @cloud ) {
63	dpavlin	176	system "find /srv/Sack/ \| cpio --create --dereference \| ssh -T -F $cloud_path.ssh $host cpio --extract --make-directories --unconditional";
64	dpavlin	179	fork_ssh( $node_port++, $host );
65	dpavlin	163	}
66
67			my $session;
68
69	dpavlin	188	sub to_all {
70			my $data = shift;
71			foreach my $port ( keys %{ $session->{port} } ) {
72			warn ">>>> [$port]\n";
73			Storable::store_fd( $data, $session->{port}->{$port} );
74			}
75			}
76
77	dpavlin	192	my @shard_paths;
78
79	dpavlin	163	while (1) {
80			for my $sock ($sel->can_read(1)) {
81			if ($sock == $lsn) {
82			my $new = $lsn->accept;
83			$sel->add($new);
84	dpavlin	174	$session->{peerport}->{ $new->peerport } = $new;
85	dpavlin	164	warn "[socket] connect\n";
86	dpavlin	163	Storable::store_fd( { ping => 1 }, $new );
87	dpavlin	166	info 0 => 'ping', $new->peerport;
88	dpavlin	163	} else {
89	dpavlin	165	my $data = eval { Storable::fd_retrieve( $sock ) };
90			if ( $@ ) {
91			delete $session->{$sock};
92			warn "[socket] disconnect: $@\n";
93			$sel->remove($sock);
94			$sock->close;
95			} else {
96	dpavlin	163	warn "<<<< ", dump($data), $/;
97	dpavlin	196
98			if ( my $path = $data->{shard} ) {
99			push @{ $info->{shard}->{ $data->{port} } }, $path;
100			}
101
102	dpavlin	192	if ( my $repl = $data->{repl} ) {
103			my $response = { repl_pid => $$ };
104			if ( $repl =~ m/ping/ ) {
105	dpavlin	188	to_all { ping => 1 };
106	dpavlin	192	} elsif ( $repl =~ m/info/ ) {
107	dpavlin	175	$response->{info} = $info;
108	dpavlin	192	} elsif ( $repl =~ m{load\s*(\S+)?} ) {
109			my $name = $1 \|\| 'shard';
110			@shard_paths = glob "/tmp/sack/$name/*";
111	dpavlin	203	warn "loading shard $name from ", dump( @shard_paths );
112	dpavlin	192	to_all { load => $name };
113	dpavlin	196	} elsif ( $repl =~ m{view\s*(\S+)?} ) {
114			my $path = $1 \|\| '/srv/Sack/views/00.demo.pl';
115			my $code = read_file $path;
116	dpavlin	200	Sack::Merge->clean;
117	dpavlin	196	to_all { view => $code, path => $path };
118			$response->{view}->{$path}->{running};
119			} elsif ( $repl =~ m{debug\s*(.+)?} ) {
120			to_all { debug => $1 };
121	dpavlin	200	} elsif ( $repl =~ m{out} ) {
122			my $out = Sack::Merge->out;
123			warn "out ",dump( $out );
124			$response->{out} = $out;
125	dpavlin	203	} elsif ( $repl =~ m{clean} ) {
126			delete $info->{shard};
127			to_all { clean => 1 };
128	dpavlin	189	} else {
129			$response->{error}->{unknown} = $data;
130	dpavlin	174	}
131	dpavlin	166	Storable::store_fd( $response, $sock );
132			} elsif ( $data->{ping} ) {
133	dpavlin	174	my $port = $data->{port};
134			info $port => 'ping', $port;
135			$session->{port}->{ $data->{port} } = $sock;
136	dpavlin	192	} elsif ( $data->{load} eq 'shard' ) {
137			if ( my $path = shift @shard_paths ) {
138			warn "retrieve $path ", -s $path;
139			my $shard = Storable::retrieve $path;
140			warn ">>>> [", $data->{port}, "] sending shard $path\n";
141			Storable::store_fd( { path => $path, shard => $shard }, $sock );
142			} else {
143			warn "no more shards for [", $data->{port}, "]\n";
144			}
145	dpavlin	200	} elsif ( defined $data->{out} ) {
146			Sack::Merge->add( $data->{out} );
147	dpavlin	192	} else {
148			warn "UNKNOWN ",dump($data);
149	dpavlin	164	}
150	dpavlin	163	}
151			}
152			}
153			}