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;
use Sack::Server::HTTP;
use Sack::Server::HTML;

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 $http_port   = 4480;

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

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

my $info;
sub info {
        my $port = shift;
        push @{ $info->{node}->{$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} );
        }
}

our @shard_load_queue;
sub load_shard {
        my $shard = shift @_ || return;

        warn "# load_shard $shard\n";

        my @shards = glob "$shard/*";

        if ( ! @shards ) {
                warn "no shards for $shard\n";
                return;
        }

        $info->{shard}->{$_} = 'wait' foreach @shards;
        warn "loading shard $shard from ", dump( @shards );

        push @shard_load_queue, @shards;
        to_all { load => $shard };
}

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 );
                } elsif ( $sock == $www ) {
                        my $client = $www->accept;
                        Sack::Server::HTTP::request( $client, sub {
                                my ( $send, $method, $param ) = @_;

                                if ( $method =~ m{views} ) {
                                        warn "$method ", -s $method, " bytes";
                                        my $code = read_file $method;
                                        Sack::Merge->clean;
                                        to_all { view => $code, path => $method };
                                        print $send "HTTP/1.0 302 $method\r\nLocation: /\r\n\r\n";
                                        return 1;
                                } elsif ( $method =~ m{^/tmp/sack} ) {
                                        load_shard $method;
                                        print $send "HTTP/1.0 302 $method\r\nLocation: /\r\n\r\n";
                                        return 1;
                                } elsif ( $method =~ m{^/out/(.+)} ) {
                                        print $send "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n";
                                        Sack::Server::HTML::send_out( $send, Sack::Merge->out, $1, $param );
                                        return 1;
                                }

                                print $send "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n";

                                print $send qq|<h1>Views</h1><ul>|
                                        , join("\n", map { qq|<li><a href="$_">$_</a>| } glob '/srv/Sack/views/*/*.pl' )
                                        , qq|</ul>|
                                        ;

                                my $out = Sack::Merge->out;     
                                print $send qq|<h1>Results</h1><ul>|
                                        , join("\n", map { qq|<li><a href="/out/$_" target="$_">$_</a>| } keys %$out )
                                        , qq|</ul>|
                                        ;

                                print $send qq|<h1>Nodes</h1>
<style type="text/css">
.forked {
        color: #f00;
}

.ping {
        color: #0f0;
}
</style>
                                |, join("\n", map {
                                        my $class = join(' ', map { $_->[0] } @{ $info->{node}->{$_} });
                                        qq|<span class="$class">$_</span>|;
                                } sort keys %{ $info->{node} } );

                                print $send qq|<h1>Data</h1><ul>|;
                                foreach my $path ( glob '/tmp/sack/*' ) {
                                        print $send qq|<li><a href="$path">$path</a><br><tt>|;
                                        foreach my $s ( sort grep { m/$path/ } keys %{ $info->{shard} } ) {
                                                print $send $info->{shard}->{$s}, ' ';
                                        }
                                        print $send qq|</tt>|;
                                }
                                print $send qq|</ul>|;

                                print $send '<pre>', dump($info), '</pre>';

                        } );
                } 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} ) {
                                        $info->{shard}->{ $path } = $data->{port};
                                        # FIXME will need push for multiple copies of shards
                                }

                                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+)?} ) {
                                                load_shard $1;
                                        } 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_load_queue ) {
                                                $info->{shard}->{$path} = 'read';
                                                my $shard = Storable::retrieve $path;
                                                $info->{shard}->{$path} = 'send';
                                                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	dpavlin	210	use Sack::Server::HTTP;
19	dpavlin	213	use Sack::Server::HTML;
20	dpavlin	200
21	dpavlin	179	my @cloud;
22	dpavlin	209	my $cloud_path = $ENV{CLOUD} \|\| "etc/cloud";
23			die "start with: CLOUD=etc/cloud perl -I/srv/Sack/lib $0\n" unless -e $cloud_path;
24	dpavlin	169	@cloud = read_file $cloud_path;
25			@cloud = map { chomp $_; $_ } @cloud;
26
27			warn "# cloud ",dump( @cloud );
28
29	dpavlin	163	my $listen_port = 4444;
30	dpavlin	210	my $http_port = 4480;
31	dpavlin	163
32	dpavlin	176	my $node_path = abs_path $0;
33	dpavlin	181	$node_path =~ s{Server}{Client};
34	dpavlin	163
35	dpavlin	210	my $lsn = IO::Socket::INET->new(Listen => 1, LocalPort => $listen_port, Reuse => 1) or die "$listen_port $!";
36			my $www = IO::Socket::INET->new(Listen => 1, LocalPort => $http_port, Reuse => 1) or die "$http_port $!";
37	dpavlin	163	my $sel = IO::Select->new($lsn);
38	dpavlin	210	$sel->add( $www );
39	dpavlin	163
40	dpavlin	166	my $info;
41			sub info {
42			my $port = shift;
43	dpavlin	211	push @{ $info->{node}->{$port} }, [ @_ ];
44	dpavlin	166	}
45
46	dpavlin	179	sub fork_ssh {
47	dpavlin	163	my ( $port, $host ) = @_;
48
49			if ( my $pid = fork ) {
50			# parent
51	dpavlin	166	info $port => 'forked', $pid;
52	dpavlin	163	return $port;
53
54			} elsif ( ! defined $pid ) {
55			warn "can't fork $host $port";
56			return;
57			} else {
58			# child
59	dpavlin	169	my $cmd = qq\|ssh -F $cloud_path.ssh -R $port:127.0.0.1:$listen_port $host $node_path $port\|;
60	dpavlin	163	warn "# exec: $cmd\n";
61			exec $cmd;
62			}
63			}
64
65			my $node_port = 4000;
66
67	dpavlin	169	foreach my $host ( @cloud ) {
68	dpavlin	176	system "find /srv/Sack/ \| cpio --create --dereference \| ssh -T -F $cloud_path.ssh $host cpio --extract --make-directories --unconditional";
69	dpavlin	179	fork_ssh( $node_port++, $host );
70	dpavlin	163	}
71
72			my $session;
73
74	dpavlin	188	sub to_all {
75			my $data = shift;
76			foreach my $port ( keys %{ $session->{port} } ) {
77			warn ">>>> [$port]\n";
78			Storable::store_fd( $data, $session->{port}->{$port} );
79			}
80			}
81
82	dpavlin	221	our @shard_load_queue;
83			sub load_shard {
84			my $shard = shift @_ \|\| return;
85	dpavlin	192
86	dpavlin	221	warn "# load_shard $shard\n";
87
88			my @shards = glob "$shard/*";
89
90			if ( ! @shards ) {
91			warn "no shards for $shard\n";
92			return;
93			}
94
95			$info->{shard}->{$_} = 'wait' foreach @shards;
96			warn "loading shard $shard from ", dump( @shards );
97
98			push @shard_load_queue, @shards;
99			to_all { load => $shard };
100			}
101
102	dpavlin	163	while (1) {
103			for my $sock ($sel->can_read(1)) {
104			if ($sock == $lsn) {
105			my $new = $lsn->accept;
106			$sel->add($new);
107	dpavlin	174	$session->{peerport}->{ $new->peerport } = $new;
108	dpavlin	164	warn "[socket] connect\n";
109	dpavlin	163	Storable::store_fd( { ping => 1 }, $new );
110	dpavlin	210	} elsif ( $sock == $www ) {
111			my $client = $www->accept;
112			Sack::Server::HTTP::request( $client, sub {
113			my ( $send, $method, $param ) = @_;
114	dpavlin	212
115			if ( $method =~ m{views} ) {
116			warn "$method ", -s $method, " bytes";
117			my $code = read_file $method;
118			Sack::Merge->clean;
119			to_all { view => $code, path => $method };
120			print $send "HTTP/1.0 302 $method\r\nLocation: /\r\n\r\n";
121	dpavlin	213	return 1;
122	dpavlin	212	} elsif ( $method =~ m{^/tmp/sack} ) {
123	dpavlin	221	load_shard $method;
124	dpavlin	212	print $send "HTTP/1.0 302 $method\r\nLocation: /\r\n\r\n";
125	dpavlin	213	return 1;
126			} elsif ( $method =~ m{^/out/(.+)} ) {
127			print $send "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n";
128			Sack::Server::HTML::send_out( $send, Sack::Merge->out, $1, $param );
129			return 1;
130	dpavlin	212	}
131
132			print $send "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n";
133
134			print $send qq\|<h1>Views</h1><ul>\|
135			, join("\n", map { qq\|<li><a href="$_">$_</a>\| } glob '/srv/Sack/views//.pl' )
136			, qq\|</ul>\|
137	dpavlin	210	;
138	dpavlin	212
139	dpavlin	213	my $out = Sack::Merge->out;
140			print $send qq\|<h1>Results</h1><ul>\|
141			, join("\n", map { qq\|<li><a href="/out/$_" target="$_">$_</a>\| } keys %$out )
142			, qq\|</ul>\|
143			;
144
145	dpavlin	219	print $send qq\|<h1>Nodes</h1>
146			<style type="text/css">
147			.forked {
148			color: #f00;
149			}
150	dpavlin	212
151	dpavlin	219	.ping {
152			color: #0f0;
153			}
154			</style>
155			\|, join("\n", map {
156			my $class = join(' ', map { $_->[0] } @{ $info->{node}->{$_} });
157			qq\|<span class="$class">$_</span>\|;
158			} sort keys %{ $info->{node} } );
159
160	dpavlin	221	print $send qq\|<h1>Data</h1><ul>\|;
161			foreach my $path ( glob '/tmp/sack/*' ) {
162			print $send qq\|<li><a href="$path">$path</a><br><tt>\|;
163			foreach my $s ( sort grep { m/$path/ } keys %{ $info->{shard} } ) {
164			print $send $info->{shard}->{$s}, ' ';
165			}
166			print $send qq\|</tt>\|;
167			}
168			print $send qq\|</ul>\|;
169	dpavlin	219
170			print $send '<pre>', dump($info), '</pre>';
171
172	dpavlin	210	} );
173	dpavlin	163	} else {
174	dpavlin	165	my $data = eval { Storable::fd_retrieve( $sock ) };
175			if ( $@ ) {
176			delete $session->{$sock};
177			warn "[socket] disconnect: $@\n";
178			$sel->remove($sock);
179			$sock->close;
180			} else {
181	dpavlin	163	warn "<<<< ", dump($data), $/;
182	dpavlin	196
183			if ( my $path = $data->{shard} ) {
184	dpavlin	211	$info->{shard}->{ $path } = $data->{port};
185			# FIXME will need push for multiple copies of shards
186	dpavlin	196	}
187
188	dpavlin	192	if ( my $repl = $data->{repl} ) {
189			my $response = { repl_pid => $$ };
190			if ( $repl =~ m/ping/ ) {
191	dpavlin	188	to_all { ping => 1 };
192	dpavlin	192	} elsif ( $repl =~ m/info/ ) {
193	dpavlin	175	$response->{info} = $info;
194	dpavlin	192	} elsif ( $repl =~ m{load\s*(\S+)?} ) {
195	dpavlin	221	load_shard $1;
196	dpavlin	196	} elsif ( $repl =~ m{view\s*(\S+)?} ) {
197			my $path = $1 \|\| '/srv/Sack/views/00.demo.pl';
198			my $code = read_file $path;
199	dpavlin	200	Sack::Merge->clean;
200	dpavlin	196	to_all { view => $code, path => $path };
201			$response->{view}->{$path}->{running};
202			} elsif ( $repl =~ m{debug\s*(.+)?} ) {
203			to_all { debug => $1 };
204	dpavlin	200	} elsif ( $repl =~ m{out} ) {
205			my $out = Sack::Merge->out;
206			warn "out ",dump( $out );
207			$response->{out} = $out;
208	dpavlin	203	} elsif ( $repl =~ m{clean} ) {
209			delete $info->{shard};
210			to_all { clean => 1 };
211	dpavlin	189	} else {
212			$response->{error}->{unknown} = $data;
213	dpavlin	174	}
214	dpavlin	166	Storable::store_fd( $response, $sock );
215			} elsif ( $data->{ping} ) {
216	dpavlin	174	my $port = $data->{port};
217			info $port => 'ping', $port;
218			$session->{port}->{ $data->{port} } = $sock;
219	dpavlin	192	} elsif ( $data->{load} eq 'shard' ) {
220	dpavlin	221	if ( my $path = shift @shard_load_queue ) {
221			$info->{shard}->{$path} = 'read';
222	dpavlin	192	my $shard = Storable::retrieve $path;
223	dpavlin	221	$info->{shard}->{$path} = 'send';
224	dpavlin	192	warn ">>>> [", $data->{port}, "] sending shard $path\n";
225			Storable::store_fd( { path => $path, shard => $shard }, $sock );
226			} else {
227			warn "no more shards for [", $data->{port}, "]\n";
228			}
229	dpavlin	200	} elsif ( defined $data->{out} ) {
230			Sack::Merge->add( $data->{out} );
231	dpavlin	192	} else {
232			warn "UNKNOWN ",dump($data);
233	dpavlin	164	}
234	dpavlin	163	}
235			}
236			}
237			}