lib/Sack/Server.pm

#!/usr/bin/perl

package Sack::Server;

use warnings;
use strict;

my $debug = 0;

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;
use Sack::Server::Gnuplot;

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" if $debug;
                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 };
}

sub run_view {
        my ( $path ) = @_;
        if ( ! -r $path ) {
                warn "ERROR view $path: $!";
                return;
        }
        my $code = read_file $path;
        Sack::Merge->clean;
        delete( $info->{view} );
        delete( $info->{merge} );
        to_all { code => $code, view => $path };
};

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} ) {
                                        run_view $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;
                                } elsif ( $method =~ m{^/gnuplot} ) {
                                        eval {
                                                my $path = Sack::Server::Gnuplot::date( Sack::Merge->out );
                                                if ( -e $path ) {
                                                        print $send "HTTP/1.0 200 OK\r\nContent-Type: image/png\r\n\r\n";
                                                        open(my $fh, '<', $path) || die $path;
                                                        my $b;
                                                        while ( read($fh, $b, 4096) ) {
                                                                print $send $b;
                                                        }
                                                        return 1;
                                                }
                                        };
                                        warn "ERROR: $@" if $@;
                                }

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

                                print $send qq|

<style type="text/css">

.running {
        color: #f00;
}


.forked {
        color: #f00;
}

.ping {
        color: #0f0;
}

.shards {
        font-family: monospace;
        line-height: 0.8em;
        color: #0f0;
}

.send {
        color: #ff0;
}

.wait {
        color: #f00;
}


</style>

|;

                                print $send qq|<h1>Views</h1><ul>|
                                        , join("\n", map {
                                                my $view = $_;
                                                my $html = '';
                                                if ( my $s = $info->{view}->{$view} ) {
                                                        my @nodes = sort keys %$s;
                                                        my $total = 0;
                                                        $html .= qq|<table><tr><th>node</th><th>rows</th><th>shards</th><th>&sum;</th><th>merge</th></tr>|;
                                                        foreach my $node ( @nodes ) {
                                                                my $h = '';
                                                                my $shard = 0;
                                                                foreach my $path ( sort keys %{ $s->{$node} } ) {
                                                                        my $affected = $s->{$node}->{$path};
                                                                        my $n = '?';
                                                                        $n = $1 if $path =~ m{/(\w)\w+/\d+};
                                                                        my $class = $affected == 0 ? 'style="color: #888"' : '';
                                                                        $h .= qq|<tt title="$affected $path"$class>$n</tt>|;
                                                                        $shard += $affected;
                                                                        $total += $affected;
                                                                }
                                                                my $merge = $info->{merge}->{$view}->{$node};
                                                                $html .= qq|<tr><td><tt>$node</tt></td><td>$shard</td><td>$h</td><td>$total</td><td>$merge</td></tr>\n|;
                                                        }

                                                        $html .= qq|</table>|;
                                                };
                                                qq|<li><a href="$view">$view</a>$html|
                                        } glob '/srv/Sack/views/*/*.pl' )
                                        , qq|</ul>|
                                        ;

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

                                print $send qq|<h1>Nodes</h1>
                                |, 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><div class="shards">|;
                                        foreach my $s ( sort grep { m/$path/ } keys %{ $info->{shard} } ) {
                                                my $i = $info->{shard}->{$s};
                                                print $send qq|<span class=$i>$i</span> |;
                                        }
                                        print $send qq|</div>|;
                                }
                                print $send qq|</ul>|;

                                if ( $param->{info} ) {
                                        print $send qq|<a href="?info=0">hide info</a>|;
                                        print $send '<pre>', dump($info), '</pre>'
                                } else {
                                        print $send qq|<a href="?info=1">show info</a>|;
                                }
                                return 1;
                        } );
                } 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 $debug;

                                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+)?} ) {
                                                run_view $1;
                                        } 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 };
                                        } elsif ( $repl eq 'exit' ) {
                                                to_all { exit => 1 };
                                                sleep 1;
                                                exit;
                                        } 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 ( defined $data->{load} && $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 ( exists $data->{out} ) {
                                        my $added = Sack::Merge->add( $data->{out} ) if defined $data->{out};
                                        $info->{merge}->{ $data->{view} }->{ $data->{port} } = $added;
                                        $info->{view }->{ $data->{view} }->{ $data->{port} } = $data->{on_shard};
                                } 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	dpavlin	232	my $debug = 0;
9
10	dpavlin	163	use IO::Socket::INET;
11			use IO::Select;
12
13			use Data::Dump qw(dump);
14			use Storable qw();
15	dpavlin	169	use File::Slurp;
16	dpavlin	176	use Cwd qw(abs_path);
17	dpavlin	163
18	dpavlin	200	use lib '/srv/Sack/lib';
19			use Sack::Merge;
20	dpavlin	210	use Sack::Server::HTTP;
21	dpavlin	213	use Sack::Server::HTML;
22	dpavlin	241	use Sack::Server::Gnuplot;
23	dpavlin	200
24	dpavlin	179	my @cloud;
25	dpavlin	209	my $cloud_path = $ENV{CLOUD} \|\| "etc/cloud";
26			die "start with: CLOUD=etc/cloud perl -I/srv/Sack/lib $0\n" unless -e $cloud_path;
27	dpavlin	169	@cloud = read_file $cloud_path;
28			@cloud = map { chomp $_; $_ } @cloud;
29
30			warn "# cloud ",dump( @cloud );
31
32	dpavlin	163	my $listen_port = 4444;
33	dpavlin	210	my $http_port = 4480;
34	dpavlin	163
35	dpavlin	176	my $node_path = abs_path $0;
36	dpavlin	181	$node_path =~ s{Server}{Client};
37	dpavlin	163
38	dpavlin	210	my $lsn = IO::Socket::INET->new(Listen => 1, LocalPort => $listen_port, Reuse => 1) or die "$listen_port $!";
39			my $www = IO::Socket::INET->new(Listen => 1, LocalPort => $http_port, Reuse => 1) or die "$http_port $!";
40	dpavlin	163	my $sel = IO::Select->new($lsn);
41	dpavlin	210	$sel->add( $www );
42	dpavlin	163
43	dpavlin	166	my $info;
44			sub info {
45			my $port = shift;
46	dpavlin	211	push @{ $info->{node}->{$port} }, [ @_ ];
47	dpavlin	166	}
48
49	dpavlin	179	sub fork_ssh {
50	dpavlin	163	my ( $port, $host ) = @_;
51
52			if ( my $pid = fork ) {
53			# parent
54	dpavlin	166	info $port => 'forked', $pid;
55	dpavlin	163	return $port;
56
57			} elsif ( ! defined $pid ) {
58			warn "can't fork $host $port";
59			return;
60			} else {
61			# child
62	dpavlin	169	my $cmd = qq\|ssh -F $cloud_path.ssh -R $port:127.0.0.1:$listen_port $host $node_path $port\|;
63	dpavlin	163	warn "# exec: $cmd\n";
64			exec $cmd;
65			}
66			}
67
68			my $node_port = 4000;
69
70	dpavlin	169	foreach my $host ( @cloud ) {
71	dpavlin	176	system "find /srv/Sack/ \| cpio --create --dereference \| ssh -T -F $cloud_path.ssh $host cpio --extract --make-directories --unconditional";
72	dpavlin	179	fork_ssh( $node_port++, $host );
73	dpavlin	163	}
74
75			my $session;
76
77	dpavlin	188	sub to_all {
78			my $data = shift;
79			foreach my $port ( keys %{ $session->{port} } ) {
80	dpavlin	232	warn ">>>> [$port]\n" if $debug;
81	dpavlin	188	Storable::store_fd( $data, $session->{port}->{$port} );
82			}
83			}
84
85	dpavlin	221	our @shard_load_queue;
86			sub load_shard {
87			my $shard = shift @_ \|\| return;
88	dpavlin	192
89	dpavlin	221	warn "# load_shard $shard\n";
90
91			my @shards = glob "$shard/*";
92
93			if ( ! @shards ) {
94			warn "no shards for $shard\n";
95			return;
96			}
97
98			$info->{shard}->{$_} = 'wait' foreach @shards;
99			warn "loading shard $shard from ", dump( @shards );
100
101			push @shard_load_queue, @shards;
102			to_all { load => $shard };
103			}
104
105	dpavlin	232	sub run_view {
106			my ( $path ) = @_;
107			if ( ! -r $path ) {
108			warn "ERROR view $path: $!";
109			return;
110			}
111			my $code = read_file $path;
112			Sack::Merge->clean;
113			delete( $info->{view} );
114	dpavlin	235	delete( $info->{merge} );
115	dpavlin	232	to_all { code => $code, view => $path };
116			};
117
118	dpavlin	163	while (1) {
119			for my $sock ($sel->can_read(1)) {
120			if ($sock == $lsn) {
121			my $new = $lsn->accept;
122			$sel->add($new);
123	dpavlin	174	$session->{peerport}->{ $new->peerport } = $new;
124	dpavlin	164	warn "[socket] connect\n";
125	dpavlin	163	Storable::store_fd( { ping => 1 }, $new );
126	dpavlin	210	} elsif ( $sock == $www ) {
127			my $client = $www->accept;
128			Sack::Server::HTTP::request( $client, sub {
129			my ( $send, $method, $param ) = @_;
130	dpavlin	212
131			if ( $method =~ m{views} ) {
132	dpavlin	232	run_view $method;
133	dpavlin	212	print $send "HTTP/1.0 302 $method\r\nLocation: /\r\n\r\n";
134	dpavlin	213	return 1;
135	dpavlin	212	} elsif ( $method =~ m{^/tmp/sack} ) {
136	dpavlin	221	load_shard $method;
137	dpavlin	212	print $send "HTTP/1.0 302 $method\r\nLocation: /\r\n\r\n";
138	dpavlin	213	return 1;
139			} elsif ( $method =~ m{^/out/(.+)} ) {
140			print $send "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n";
141			Sack::Server::HTML::send_out( $send, Sack::Merge->out, $1, $param );
142			return 1;
143	dpavlin	241	} elsif ( $method =~ m{^/gnuplot} ) {
144			eval {
145			my $path = Sack::Server::Gnuplot::date( Sack::Merge->out );
146			if ( -e $path ) {
147			print $send "HTTP/1.0 200 OK\r\nContent-Type: image/png\r\n\r\n";
148			open(my $fh, '<', $path) \|\| die $path;
149			my $b;
150			while ( read($fh, $b, 4096) ) {
151			print $send $b;
152			}
153			return 1;
154			}
155			};
156			warn "ERROR: $@" if $@;
157	dpavlin	212	}
158
159			print $send "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n";
160
161	dpavlin	232	print $send qq\|
162	dpavlin	212
163	dpavlin	232	<style type="text/css">
164	dpavlin	213
165	dpavlin	232	.running {
166			color: #f00;
167			}
168
169
170	dpavlin	219	.forked {
171			color: #f00;
172			}
173	dpavlin	212
174	dpavlin	219	.ping {
175			color: #0f0;
176			}
177	dpavlin	222
178			.shards {
179			font-family: monospace;
180			line-height: 0.8em;
181			color: #0f0;
182			}
183
184			.send {
185			color: #ff0;
186			}
187
188			.wait {
189			color: #f00;
190			}
191
192
193	dpavlin	219	</style>
194	dpavlin	232
195			\|;
196
197			print $send qq\|<h1>Views</h1><ul>\|
198			, join("\n", map {
199			my $view = $_;
200			my $html = '';
201			if ( my $s = $info->{view}->{$view} ) {
202			my @nodes = sort keys %$s;
203			my $total = 0;
204	dpavlin	237	$html .= qq\|<table><tr><th>node</th><th>rows</th><th>shards</th><th>∑</th><th>merge</th></tr>\|;
205	dpavlin	232	foreach my $node ( @nodes ) {
206			my $h = '';
207			my $shard = 0;
208			foreach my $path ( sort keys %{ $s->{$node} } ) {
209			my $affected = $s->{$node}->{$path};
210	dpavlin	233	my $n = '?';
211			$n = $1 if $path =~ m{/(\w)\w+/\d+};
212	dpavlin	235	my $class = $affected == 0 ? 'style="color: #888"' : '';
213			$h .= qq\|<tt title="$affected $path"$class>$n</tt>\|;
214	dpavlin	232	$shard += $affected;
215			$total += $affected;
216			}
217	dpavlin	235	my $merge = $info->{merge}->{$view}->{$node};
218	dpavlin	237	$html .= qq\|<tr><td><tt>$node</tt></td><td>$shard</td><td>$h</td><td>$total</td><td>$merge</td></tr>\n\|;
219	dpavlin	232	}
220
221			$html .= qq\|</table>\|;
222			};
223			qq\|<li><a href="$view">$view</a>$html\|
224			} glob '/srv/Sack/views//.pl' )
225			, qq\|</ul>\|
226			;
227
228			my $out = Sack::Merge->out;
229	dpavlin	241	if ( my $li = join("\n", map { qq\|<li><a href="/out/$_" target="$_">$_</a>\| } keys %$out ) ) {
230			print $send qq\|<h1>Results</h1><ul>$li</ul><img src="/gnuplot/">\n\|;
231			}
232	dpavlin	232
233			print $send qq\|<h1>Nodes</h1>
234	dpavlin	219	\|, join("\n", map {
235			my $class = join(' ', map { $_->[0] } @{ $info->{node}->{$_} });
236			qq\|<span class="$class">$_</span>\|;
237			} sort keys %{ $info->{node} } );
238
239	dpavlin	221	print $send qq\|<h1>Data</h1><ul>\|;
240			foreach my $path ( glob '/tmp/sack/*' ) {
241	dpavlin	222	print $send qq\|<li><a href="$path">$path</a><div class="shards">\|;
242	dpavlin	221	foreach my $s ( sort grep { m/$path/ } keys %{ $info->{shard} } ) {
243	dpavlin	222	my $i = $info->{shard}->{$s};
244			print $send qq\|<span class=$i>$i</span> \|;
245	dpavlin	221	}
246	dpavlin	222	print $send qq\|</div>\|;
247	dpavlin	221	}
248			print $send qq\|</ul>\|;
249	dpavlin	219
250	dpavlin	233	if ( $param->{info} ) {
251			print $send qq\|<a href="?info=0">hide info</a>\|;
252			print $send '<pre>', dump($info), '</pre>'
253			} else {
254			print $send qq\|<a href="?info=1">show info</a>\|;
255			}
256	dpavlin	232	return 1;
257	dpavlin	210	} );
258	dpavlin	163	} else {
259	dpavlin	165	my $data = eval { Storable::fd_retrieve( $sock ) };
260			if ( $@ ) {
261			delete $session->{$sock};
262			warn "[socket] disconnect: $@\n";
263			$sel->remove($sock);
264			$sock->close;
265			} else {
266	dpavlin	232	warn "<<<< ", dump($data), $/ if $debug;
267	dpavlin	196
268			if ( my $path = $data->{shard} ) {
269	dpavlin	211	$info->{shard}->{ $path } = $data->{port};
270			# FIXME will need push for multiple copies of shards
271	dpavlin	196	}
272
273	dpavlin	192	if ( my $repl = $data->{repl} ) {
274			my $response = { repl_pid => $$ };
275			if ( $repl =~ m/ping/ ) {
276	dpavlin	188	to_all { ping => 1 };
277	dpavlin	192	} elsif ( $repl =~ m/info/ ) {
278	dpavlin	175	$response->{info} = $info;
279	dpavlin	192	} elsif ( $repl =~ m{load\s*(\S+)?} ) {
280	dpavlin	221	load_shard $1;
281	dpavlin	196	} elsif ( $repl =~ m{view\s*(\S+)?} ) {
282	dpavlin	232	run_view $1;
283	dpavlin	196	} elsif ( $repl =~ m{debug\s*(.+)?} ) {
284			to_all { debug => $1 };
285	dpavlin	200	} elsif ( $repl =~ m{out} ) {
286			my $out = Sack::Merge->out;
287			warn "out ",dump( $out );
288			$response->{out} = $out;
289	dpavlin	203	} elsif ( $repl =~ m{clean} ) {
290			delete $info->{shard};
291			to_all { clean => 1 };
292	dpavlin	232	} elsif ( $repl eq 'exit' ) {
293			to_all { exit => 1 };
294			sleep 1;
295			exit;
296	dpavlin	189	} else {
297			$response->{error}->{unknown} = $data;
298	dpavlin	174	}
299	dpavlin	166	Storable::store_fd( $response, $sock );
300			} elsif ( $data->{ping} ) {
301	dpavlin	174	my $port = $data->{port};
302			info $port => 'ping', $port;
303			$session->{port}->{ $data->{port} } = $sock;
304	dpavlin	232	} elsif ( defined $data->{load} && $data->{load} eq 'shard' ) {
305	dpavlin	221	if ( my $path = shift @shard_load_queue ) {
306			$info->{shard}->{$path} = 'read';
307	dpavlin	192	my $shard = Storable::retrieve $path;
308	dpavlin	221	$info->{shard}->{$path} = 'send';
309	dpavlin	192	warn ">>>> [", $data->{port}, "] sending shard $path\n";
310			Storable::store_fd( { path => $path, shard => $shard }, $sock );
311			} else {
312			warn "no more shards for [", $data->{port}, "]\n";
313			}
314	dpavlin	235	} elsif ( exists $data->{out} ) {
315			my $added = Sack::Merge->add( $data->{out} ) if defined $data->{out};
316			$info->{merge}->{ $data->{view} }->{ $data->{port} } = $added;
317			$info->{view }->{ $data->{view} }->{ $data->{port} } = $data->{on_shard};
318	dpavlin	192	} else {
319			warn "UNKNOWN ",dump($data);
320	dpavlin	164	}
321	dpavlin	163	}
322			}
323			}
324			}