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 all_ports { keys %{ $session->{port} } }

sub to_all {
        my $data = shift;
        foreach my $port ( all_ports ) {
                warn ">>>> [$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";

        $shard .= '/*' if -d $shard;

        my @shards = glob $shard;

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

        foreach my $s ( @shards ) {
                if ( my $node = $info->{shard}->{$s} ) {
                        next if $node =~ m{^\d+$}; # not node number
                }
                $info->{shard}->{$s} = 'wait';
                push @shard_load_queue, $s;
                warn "queued $s for loading\n";
        }
        to_all { load => $shard };
        $info->{pending}->{$_} = 'load' foreach all_ports;
}

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} );
        delete( $info->{shard} );
        $info->{pending}->{$_} = 'view' foreach all_ports;
        to_all { code => $code, view => $path };
};

our @responses;

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, $param );
                                                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;
                                                } else {
                                                        print $send "HTTP/1.0 404 no graph\r\n\r\n";
                                                        return 1;
                                                }
                                        };
                                        warn "ERROR: $@" if $@;
                                }

                                my $refresh = $param->{refresh};
                                $refresh = 1 if keys %{ $info->{pending} };

                                print $send "HTTP/1.0 200 OK\r\nContent-Type: text/html"
                                        , ( $refresh ? "\r\nRefresh: $refresh" : '' )
                                        , "\r\n\r\n"
                                        , ( $refresh ? qq|<span style="color: #888; float:right">$refresh</span>| : '' )
                                ;

                                print $send qq|

<style type="text/css">

.running {
        color: #f00;
}


.forked {
        color: #888;
}

.ping {
        color: #0f0;
}

.load {
        color: #f00;
}

.view {
        color: #00f;
}

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

.send {
        color: #ff0;
}

.wait {
        color: #f00;
}


</style>

|;

                                my $out = Sack::Merge->out;     
                                if ( my $li = join("\n", map { qq|<li><input type=checkbox name=filter value="$_"><a href="/out/$_" target="$_">$_</a>| } keys %$out ) ) {
                                        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|;
                                }

                                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>|
                                        ;

                                print $send qq|<h1>Nodes</h1>|;
                                foreach my $node ( keys %{ $info->{node} } ) {
                                        my $class = join(' '
                                                , map { $_->[0] } @{ $info->{node}->{$node} }
                                        );
                                        if ( my $pending = $info->{pending}->{$node} ) {
                                                $class .= " $pending";
                                        }
                                        print $send qq|<tt class="$class">$node</tt>\n|;
                                }

                                print $send qq|<h1>Shards</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" title="$s">$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{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;
                                        } elsif ( $repl eq '.' ) {
                                                $response->{'.'} = [ @responses ];
                                                @responses = ();
                                        } elsif ( $repl =~ m{(\w+)\s*(.+)?} ) {
                                                to_all { $1 => $2 };
                                        } else {
                                                $response->{error}->{repl} = $repl;
                                        }
                                        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";
                                                delete $info->{pending}->{ $data->{port} };
                                        }
                                } 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};
                                        # refresh shard allocation
                                        $info->{shard}->{ $_ } = $data->{port} foreach keys %{ $data->{on_shard} };
                                        delete $info->{pending}->{ $data->{port} };
                                } elsif ( exists $data->{port} ) {
                                        push @responses, $data;
                                        warn "# ",dump($data),$/;
                                } 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	263	sub all_ports { keys %{ $session->{port} } }
78
79	dpavlin	188	sub to_all {
80			my $data = shift;
81	dpavlin	263	foreach my $port ( all_ports ) {
82	dpavlin	232	warn ">>>> [$port]\n" if $debug;
83	dpavlin	188	Storable::store_fd( $data, $session->{port}->{$port} );
84			}
85			}
86
87	dpavlin	221	our @shard_load_queue;
88			sub load_shard {
89			my $shard = shift @_ \|\| return;
90	dpavlin	192
91	dpavlin	221	warn "# load_shard $shard\n";
92
93	dpavlin	260	$shard .= '/*' if -d $shard;
94	dpavlin	221
95	dpavlin	260	my @shards = glob $shard;
96
97	dpavlin	221	if ( ! @shards ) {
98			warn "no shards for $shard\n";
99			return;
100			}
101
102	dpavlin	247	foreach my $s ( @shards ) {
103	dpavlin	254	if ( my $node = $info->{shard}->{$s} ) {
104			next if $node =~ m{^\d+$}; # not node number
105			}
106	dpavlin	247	$info->{shard}->{$s} = 'wait';
107			push @shard_load_queue, $s;
108			warn "queued $s for loading\n";
109			}
110	dpavlin	221	to_all { load => $shard };
111	dpavlin	263	$info->{pending}->{$_} = 'load' foreach all_ports;
112	dpavlin	221	}
113
114	dpavlin	232	sub run_view {
115			my ( $path ) = @_;
116			if ( ! -r $path ) {
117			warn "ERROR view $path: $!";
118			return;
119			}
120			my $code = read_file $path;
121			Sack::Merge->clean;
122			delete( $info->{view} );
123	dpavlin	235	delete( $info->{merge} );
124	dpavlin	248	delete( $info->{shard} );
125	dpavlin	263	$info->{pending}->{$_} = 'view' foreach all_ports;
126	dpavlin	232	to_all { code => $code, view => $path };
127			};
128
129	dpavlin	247	our @responses;
130
131	dpavlin	163	while (1) {
132			for my $sock ($sel->can_read(1)) {
133			if ($sock == $lsn) {
134			my $new = $lsn->accept;
135			$sel->add($new);
136	dpavlin	174	$session->{peerport}->{ $new->peerport } = $new;
137	dpavlin	164	warn "[socket] connect\n";
138	dpavlin	163	Storable::store_fd( { ping => 1 }, $new );
139	dpavlin	210	} elsif ( $sock == $www ) {
140			my $client = $www->accept;
141			Sack::Server::HTTP::request( $client, sub {
142			my ( $send, $method, $param ) = @_;
143	dpavlin	212
144			if ( $method =~ m{views} ) {
145	dpavlin	232	run_view $method;
146	dpavlin	212	print $send "HTTP/1.0 302 $method\r\nLocation: /\r\n\r\n";
147	dpavlin	213	return 1;
148	dpavlin	212	} elsif ( $method =~ m{^/tmp/sack} ) {
149	dpavlin	221	load_shard $method;
150	dpavlin	212	print $send "HTTP/1.0 302 $method\r\nLocation: /\r\n\r\n";
151	dpavlin	213	return 1;
152			} elsif ( $method =~ m{^/out/(.+)} ) {
153			print $send "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n";
154			Sack::Server::HTML::send_out( $send, Sack::Merge->out, $1, $param );
155			return 1;
156	dpavlin	241	} elsif ( $method =~ m{^/gnuplot} ) {
157			eval {
158	dpavlin	245	my $path = Sack::Server::Gnuplot::date( Sack::Merge->out, $param );
159	dpavlin	241	if ( -e $path ) {
160			print $send "HTTP/1.0 200 OK\r\nContent-Type: image/png\r\n\r\n";
161			open(my $fh, '<', $path) \|\| die $path;
162			my $b;
163			while ( read($fh, $b, 4096) ) {
164			print $send $b;
165			}
166			return 1;
167	dpavlin	245	} else {
168			print $send "HTTP/1.0 404 no graph\r\n\r\n";
169			return 1;
170	dpavlin	241	}
171			};
172			warn "ERROR: $@" if $@;
173	dpavlin	212	}
174
175	dpavlin	263	my $refresh = $param->{refresh};
176			$refresh = 1 if keys %{ $info->{pending} };
177
178	dpavlin	262	print $send "HTTP/1.0 200 OK\r\nContent-Type: text/html"
179	dpavlin	263	, ( $refresh ? "\r\nRefresh: $refresh" : '' )
180	dpavlin	262	, "\r\n\r\n"
181	dpavlin	263	, ( $refresh ? qq\|<span style="color: #888; float:right">$refresh</span>\| : '' )
182	dpavlin	262	;
183	dpavlin	212
184	dpavlin	232	print $send qq\|
185	dpavlin	212
186	dpavlin	232	<style type="text/css">
187	dpavlin	213
188	dpavlin	232	.running {
189			color: #f00;
190			}
191
192
193	dpavlin	219	.forked {
194	dpavlin	265	color: #888;
195	dpavlin	263	}
196
197			.ping {
198	dpavlin	265	color: #0f0;
199	dpavlin	263	}
200
201			.load {
202	dpavlin	219	color: #f00;
203			}
204	dpavlin	212
205	dpavlin	263	.view {
206			color: #00f;
207			}
208
209	dpavlin	222	.shards {
210			font-family: monospace;
211	dpavlin	250	// line-height: 0.8em;
212	dpavlin	222	color: #0f0;
213			}
214
215			.send {
216			color: #ff0;
217			}
218
219			.wait {
220			color: #f00;
221			}
222
223
224	dpavlin	219	</style>
225	dpavlin	232
226			\|;
227
228	dpavlin	264	my $out = Sack::Merge->out;
229			if ( my $li = join("\n", map { qq\|<li><input type=checkbox name=filter value="$_"><a href="/out/$_" target="$_">$_</a>\| } keys %$out ) ) {
230			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\|;
231			}
232
233	dpavlin	232	print $send qq\|<h1>Views</h1><ul>\|
234			, join("\n", map {
235			my $view = $_;
236			my $html = '';
237			if ( my $s = $info->{view}->{$view} ) {
238			my @nodes = sort keys %$s;
239			my $total = 0;
240	dpavlin	237	$html .= qq\|<table><tr><th>node</th><th>rows</th><th>shards</th><th>∑</th><th>merge</th></tr>\|;
241	dpavlin	232	foreach my $node ( @nodes ) {
242			my $h = '';
243			my $shard = 0;
244			foreach my $path ( sort keys %{ $s->{$node} } ) {
245			my $affected = $s->{$node}->{$path};
246	dpavlin	233	my $n = '?';
247			$n = $1 if $path =~ m{/(\w)\w+/\d+};
248	dpavlin	235	my $class = $affected == 0 ? 'style="color: #888"' : '';
249			$h .= qq\|<tt title="$affected $path"$class>$n</tt>\|;
250	dpavlin	232	$shard += $affected;
251			$total += $affected;
252			}
253	dpavlin	247	my $merge = $info->{merge}->{$view}->{$node} \|\| '?';
254	dpavlin	237	$html .= qq\|<tr><td><tt>$node</tt></td><td>$shard</td><td>$h</td><td>$total</td><td>$merge</td></tr>\n\|;
255	dpavlin	232	}
256
257			$html .= qq\|</table>\|;
258			};
259			qq\|<li><a href="$view">$view</a>$html\|
260			} glob '/srv/Sack/views//.pl' )
261			, qq\|</ul>\|
262			;
263
264	dpavlin	263	print $send qq\|<h1>Nodes</h1>\|;
265			foreach my $node ( keys %{ $info->{node} } ) {
266			my $class = join(' '
267			, map { $_->[0] } @{ $info->{node}->{$node} }
268			);
269	dpavlin	265	if ( my $pending = $info->{pending}->{$node} ) {
270			$class .= " $pending";
271			}
272	dpavlin	263	print $send qq\|<tt class="$class">$node</tt>\n\|;
273			}
274	dpavlin	219
275	dpavlin	249	print $send qq\|<h1>Shards</h1><ul>\|;
276	dpavlin	221	foreach my $path ( glob '/tmp/sack/*' ) {
277	dpavlin	222	print $send qq\|<li><a href="$path">$path</a><div class="shards">\|;
278	dpavlin	221	foreach my $s ( sort grep { m/$path/ } keys %{ $info->{shard} } ) {
279	dpavlin	222	my $i = $info->{shard}->{$s};
280	dpavlin	249	print $send qq\|<span class="$i" title="$s">$i</span> \|;
281	dpavlin	221	}
282	dpavlin	222	print $send qq\|</div>\|;
283	dpavlin	221	}
284			print $send qq\|</ul>\|;
285	dpavlin	219
286	dpavlin	233	if ( $param->{info} ) {
287			print $send qq\|<a href="?info=0">hide info</a>\|;
288			print $send '<pre>', dump($info), '</pre>'
289			} else {
290			print $send qq\|<a href="?info=1">show info</a>\|;
291			}
292	dpavlin	232	return 1;
293	dpavlin	210	} );
294	dpavlin	163	} else {
295	dpavlin	165	my $data = eval { Storable::fd_retrieve( $sock ) };
296			if ( $@ ) {
297			delete $session->{$sock};
298			warn "[socket] disconnect: $@\n";
299			$sel->remove($sock);
300			$sock->close;
301			} else {
302	dpavlin	232	warn "<<<< ", dump($data), $/ if $debug;
303	dpavlin	196
304			if ( my $path = $data->{shard} ) {
305	dpavlin	211	$info->{shard}->{ $path } = $data->{port};
306			# FIXME will need push for multiple copies of shards
307	dpavlin	196	}
308
309	dpavlin	192	if ( my $repl = $data->{repl} ) {
310			my $response = { repl_pid => $$ };
311			if ( $repl =~ m/ping/ ) {
312	dpavlin	188	to_all { ping => 1 };
313	dpavlin	192	} elsif ( $repl =~ m/info/ ) {
314	dpavlin	175	$response->{info} = $info;
315	dpavlin	192	} elsif ( $repl =~ m{load\s*(\S+)?} ) {
316	dpavlin	221	load_shard $1;
317	dpavlin	196	} elsif ( $repl =~ m{view\s*(\S+)?} ) {
318	dpavlin	232	run_view $1;
319	dpavlin	200	} elsif ( $repl =~ m{out} ) {
320			my $out = Sack::Merge->out;
321			warn "out ",dump( $out );
322			$response->{out} = $out;
323	dpavlin	203	} elsif ( $repl =~ m{clean} ) {
324			delete $info->{shard};
325			to_all { clean => 1 };
326	dpavlin	232	} elsif ( $repl eq 'exit' ) {
327			to_all { exit => 1 };
328			sleep 1;
329			exit;
330	dpavlin	247	} elsif ( $repl eq '.' ) {
331			$response->{'.'} = [ @responses ];
332			@responses = ();
333			} elsif ( $repl =~ m{(\w+)\s*(.+)?} ) {
334			to_all { $1 => $2 };
335	dpavlin	189	} else {
336	dpavlin	247	$response->{error}->{repl} = $repl;
337	dpavlin	174	}
338	dpavlin	166	Storable::store_fd( $response, $sock );
339			} elsif ( $data->{ping} ) {
340	dpavlin	174	my $port = $data->{port};
341			info $port => 'ping', $port;
342			$session->{port}->{ $data->{port} } = $sock;
343	dpavlin	232	} elsif ( defined $data->{load} && $data->{load} eq 'shard' ) {
344	dpavlin	221	if ( my $path = shift @shard_load_queue ) {
345			$info->{shard}->{$path} = 'read';
346	dpavlin	192	my $shard = Storable::retrieve $path;
347	dpavlin	221	$info->{shard}->{$path} = 'send';
348	dpavlin	192	warn ">>>> [", $data->{port}, "] sending shard $path\n";
349			Storable::store_fd( { path => $path, shard => $shard }, $sock );
350			} else {
351			warn "no more shards for [", $data->{port}, "]\n";
352	dpavlin	263	delete $info->{pending}->{ $data->{port} };
353	dpavlin	192	}
354	dpavlin	235	} elsif ( exists $data->{out} ) {
355			my $added = Sack::Merge->add( $data->{out} ) if defined $data->{out};
356			$info->{merge}->{ $data->{view} }->{ $data->{port} } = $added;
357			$info->{view }->{ $data->{view} }->{ $data->{port} } = $data->{on_shard};
358	dpavlin	248	# refresh shard allocation
359			$info->{shard}->{ $_ } = $data->{port} foreach keys %{ $data->{on_shard} };
360	dpavlin	263	delete $info->{pending}->{ $data->{port} };
361	dpavlin	247	} elsif ( exists $data->{port} ) {
362			push @responses, $data;
363			warn "# ",dump($data),$/;
364	dpavlin	192	} else {
365			warn "UNKNOWN ",dump($data);
366	dpavlin	164	}
367	dpavlin	163	}
368			}
369			}
370			}