| 1 |
#!/usr/bin/perl |
| 2 |
|
| 3 |
package Sack::Server; |
| 4 |
|
| 5 |
use warnings; |
| 6 |
use strict; |
| 7 |
|
| 8 |
my $debug = 0; |
| 9 |
|
| 10 |
use IO::Socket::INET; |
| 11 |
use IO::Select; |
| 12 |
|
| 13 |
use Data::Dump qw(dump); |
| 14 |
use Storable qw(); |
| 15 |
use File::Slurp; |
| 16 |
use Cwd qw(abs_path); |
| 17 |
|
| 18 |
use lib '/srv/Sack/lib'; |
| 19 |
use Sack::Merge; |
| 20 |
use Sack::Server::HTTP; |
| 21 |
use Sack::Server::HTML; |
| 22 |
use Sack::Server::Gnuplot; |
| 23 |
|
| 24 |
my @cloud; |
| 25 |
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 |
@cloud = read_file $cloud_path; |
| 28 |
@cloud = map { chomp $_; $_ } @cloud; |
| 29 |
|
| 30 |
warn "# cloud ",dump( @cloud ); |
| 31 |
|
| 32 |
my $listen_port = 4444; |
| 33 |
my $http_port = 4480; |
| 34 |
|
| 35 |
my $node_path = abs_path $0; |
| 36 |
$node_path =~ s{Server}{Client}; |
| 37 |
|
| 38 |
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 |
my $sel = IO::Select->new($lsn); |
| 41 |
$sel->add( $www ); |
| 42 |
|
| 43 |
my $info; |
| 44 |
|
| 45 |
sub fork_ssh { |
| 46 |
my ( $port, $host ) = @_; |
| 47 |
|
| 48 |
if ( my $pid = fork ) { |
| 49 |
# parent |
| 50 |
$info->{forked}->{$port} = $pid; |
| 51 |
$info->{pending}->{$port} = 'forked'; |
| 52 |
$info->{host}->{$port} = $host; |
| 53 |
return $port; |
| 54 |
|
| 55 |
} elsif ( ! defined $pid ) { |
| 56 |
warn "can't fork $host $port"; |
| 57 |
return; |
| 58 |
} elsif ( $host =~ m/^(127.0.0.1|localhost)$/ ) { |
| 59 |
warn "# localhost, just execute node\n"; |
| 60 |
exec $node_path, $port, $listen_port; |
| 61 |
} else { |
| 62 |
# child |
| 63 |
warn "[$port] cpio last version\n"; |
| 64 |
system "find /srv/Sack/ | cpio --create --dereference | ssh -T -F $cloud_path.ssh $host cpio --extract --make-directories --unconditional"; |
| 65 |
|
| 66 |
my $cmd = qq|ssh -F $cloud_path.ssh -R $port:127.0.0.1:$listen_port $host $node_path $port|; |
| 67 |
warn "# exec: $cmd\n"; |
| 68 |
exec $cmd; |
| 69 |
} |
| 70 |
} |
| 71 |
|
| 72 |
my $node_port = 4000; |
| 73 |
|
| 74 |
foreach my $host ( @cloud ) { |
| 75 |
fork_ssh( $node_port++, $host ); |
| 76 |
} |
| 77 |
|
| 78 |
my $session; |
| 79 |
|
| 80 |
sub all_ports { keys %{ $session->{port} } } |
| 81 |
|
| 82 |
sub to_all { |
| 83 |
my $data = shift; |
| 84 |
foreach my $port ( all_ports ) { |
| 85 |
warn ">>>> [$port]\n" if $debug; |
| 86 |
Storable::store_fd( $data, $session->{port}->{$port} ); |
| 87 |
} |
| 88 |
} |
| 89 |
|
| 90 |
our @shard_load_queue; |
| 91 |
sub load_shard { |
| 92 |
my $shard = shift @_ || return; |
| 93 |
|
| 94 |
warn "# load_shard $shard\n"; |
| 95 |
|
| 96 |
$shard .= '/*' if -d $shard; |
| 97 |
|
| 98 |
my @shards = glob $shard; |
| 99 |
|
| 100 |
if ( ! @shards ) { |
| 101 |
warn "no shards for $shard\n"; |
| 102 |
return; |
| 103 |
} |
| 104 |
|
| 105 |
foreach my $s ( @shards ) { |
| 106 |
if ( my $node = $info->{shard}->{$s} ) { |
| 107 |
next if $node =~ m{^\d+$}; # not node number |
| 108 |
} |
| 109 |
$info->{shard}->{$s} = 'wait'; |
| 110 |
push @shard_load_queue, $s; |
| 111 |
warn "queued $s for loading\n"; |
| 112 |
} |
| 113 |
|
| 114 |
# XXX depriciated but not removed yet |
| 115 |
if ( 0 ) { |
| 116 |
to_all { load => $shard }; |
| 117 |
$info->{pending}->{$_} = 'load' foreach all_ports; |
| 118 |
return; |
| 119 |
} |
| 120 |
|
| 121 |
my @nodes = all_ports; |
| 122 |
my $chunk = int( ( $#shard_load_queue + 1 ) / $#nodes ); |
| 123 |
|
| 124 |
my $pid_port; |
| 125 |
|
| 126 |
foreach my $port ( all_ports ) { |
| 127 |
$info->{pending}->{$port} = 'load'; |
| 128 |
my @shards = splice @shard_load_queue, 0, $chunk; |
| 129 |
|
| 130 |
my $sock = $session->{port}->{$port}; |
| 131 |
|
| 132 |
if ( my $pid = fork ) { |
| 133 |
$pid_port->{$pid} = $port; |
| 134 |
# parent |
| 135 |
} elsif ( ! defined $pid ) { |
| 136 |
die "can't fork $!"; |
| 137 |
} else { |
| 138 |
# child |
| 139 |
|
| 140 |
warn ">>>> [$port] bulk_load ", $#shards + 1, " shards\n"; |
| 141 |
Storable::store_fd( { bulk_load => [ @shards ] }, $sock ); |
| 142 |
my $current = 0; |
| 143 |
my $total = $#shards + 1; |
| 144 |
foreach my $s ( @shards ) { |
| 145 |
warn ">>>> [$port] bulk_load $s $current/$total\n"; |
| 146 |
Storable::store_fd( Storable::retrieve( $s ), $sock ); |
| 147 |
$current++; |
| 148 |
} |
| 149 |
warn ">>>> [$port] bulk_load finished, $current shards\n"; |
| 150 |
exit; |
| 151 |
} |
| 152 |
|
| 153 |
} |
| 154 |
|
| 155 |
foreach my $child ( keys %$pid_port ) { |
| 156 |
warn "waitpid $child\n"; |
| 157 |
waitpid($child, 0); |
| 158 |
delete( $info->{pending}->{ $pid_port->{$child} } ); |
| 159 |
} |
| 160 |
|
| 161 |
$info->{pending}->{$_} = 'view' foreach all_ports; |
| 162 |
to_all { code => "# collect back loaded shards\n", view => 'noop' }; |
| 163 |
} |
| 164 |
|
| 165 |
sub run_view { |
| 166 |
my ( $path ) = @_; |
| 167 |
if ( ! -r $path ) { |
| 168 |
warn "ERROR view $path: $!"; |
| 169 |
return; |
| 170 |
} |
| 171 |
my $code = read_file $path; |
| 172 |
Sack::Merge->clean; |
| 173 |
delete( $info->{view} ); |
| 174 |
delete( $info->{merge} ); |
| 175 |
delete( $info->{shard} ); |
| 176 |
$info->{pending}->{$_} = 'view' foreach all_ports; |
| 177 |
to_all { code => $code, view => $path }; |
| 178 |
}; |
| 179 |
|
| 180 |
our @responses; |
| 181 |
|
| 182 |
while (1) { |
| 183 |
for my $sock ($sel->can_read(1)) { |
| 184 |
if ($sock == $lsn) { |
| 185 |
my $new = $lsn->accept; |
| 186 |
$sel->add($new); |
| 187 |
$session->{peerport}->{ $new->peerport } = $new; |
| 188 |
warn "[socket] connect\n"; |
| 189 |
Storable::store_fd( { ping => 1 }, $new ); |
| 190 |
} elsif ( $sock == $www ) { |
| 191 |
my $client = $www->accept; |
| 192 |
Sack::Server::HTTP::request( $client, sub { |
| 193 |
my ( $send, $method, $param ) = @_; |
| 194 |
|
| 195 |
if ( $method =~ m{views} ) { |
| 196 |
run_view $method; |
| 197 |
print $send "HTTP/1.0 302 $method\r\nLocation: /\r\n\r\n"; |
| 198 |
return 1; |
| 199 |
} elsif ( $method =~ m{^/tmp/sack} ) { |
| 200 |
load_shard $method; |
| 201 |
print $send "HTTP/1.0 302 $method\r\nLocation: /\r\n\r\n"; |
| 202 |
return 1; |
| 203 |
} elsif ( $method =~ m{^/out/(.+)} ) { |
| 204 |
print $send "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n"; |
| 205 |
Sack::Server::HTML::send_out( $send, Sack::Merge->out, $1, $param ); |
| 206 |
return 1; |
| 207 |
} elsif ( $method =~ m{^/gnuplot} ) { |
| 208 |
eval { |
| 209 |
my $path = Sack::Server::Gnuplot::date( Sack::Merge->out, $param ); |
| 210 |
if ( -e $path ) { |
| 211 |
print $send "HTTP/1.0 200 OK\r\nContent-Type: image/png\r\n\r\n"; |
| 212 |
open(my $fh, '<', $path) || die $path; |
| 213 |
my $b; |
| 214 |
while ( read($fh, $b, 4096) ) { |
| 215 |
print $send $b; |
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} |
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return 1; |
| 218 |
} else { |
| 219 |
print $send "HTTP/1.0 404 no graph\r\n\r\n"; |
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return 1; |
| 221 |
} |
| 222 |
}; |
| 223 |
warn "ERROR: $@" if $@; |
| 224 |
} elsif ( $method =~ m{^/favicon.ico} ) { |
| 225 |
print $send "HTTP/1.0 200 OK\r\nContent-Type: image/vnd.microsoft.icon\r\n\r\n", read_file( 'artwork/favicon.ico' ); |
| 226 |
return 1; |
| 227 |
} elsif ( $method =~ m{/nodes} ) { |
| 228 |
to_all { ping => 1 }; |
| 229 |
my @proc = ( 'MemTotal', 'MemFree', 'Buffers', 'Cached', 'VmSize', 'VmPeak' ); |
| 230 |
print $send "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n", |
| 231 |
'<table><tr><th>', join('</th><th>', 'node', 'ip', @proc), '</th></tr>'; |
| 232 |
foreach my $node ( sort { |
| 233 |
$info->{host}->{$a} cmp $info->{host}->{$b} || # ip |
| 234 |
$a <=> $b # node |
| 235 |
} keys %{$info->{proc}} ) { |
| 236 |
print $send '<tr><td>', join('</td><td align=right>', |
| 237 |
$node, $info->{host}->{$node}, map { |
| 238 |
my $kb = $info->{proc}->{$node}->{$_}; |
| 239 |
$kb =~ s/\s+kb//i; $kb; |
| 240 |
} @proc ), '</td><tr>'; |
| 241 |
} |
| 242 |
print $send '</table>'; |
| 243 |
return 1; |
| 244 |
} |
| 245 |
|
| 246 |
my $refresh = $param->{refresh}; |
| 247 |
$refresh = 1 if grep { $info->{pending}->{$_} ne 'forked' } keys %{ $info->{pending} }; |
| 248 |
# we don't care about refresh is nodes are stuck in forked state! |
| 249 |
|
| 250 |
print $send "HTTP/1.0 200 OK\r\nContent-Type: text/html" |
| 251 |
, ( $refresh ? "\r\nRefresh: $refresh" : '' ) |
| 252 |
, "\r\n\r\n" |
| 253 |
, ( $refresh ? qq|<span style="color: #888; float:right">$refresh</span>| : '' ) |
| 254 |
; |
| 255 |
|
| 256 |
print $send qq| |
| 257 |
|
| 258 |
<style type="text/css"> |
| 259 |
|
| 260 |
.running { |
| 261 |
color: #f00; |
| 262 |
} |
| 263 |
|
| 264 |
|
| 265 |
.forked { |
| 266 |
color: #888; |
| 267 |
} |
| 268 |
|
| 269 |
.ping { |
| 270 |
color: #0f0; |
| 271 |
} |
| 272 |
|
| 273 |
.load { |
| 274 |
color: #f00; |
| 275 |
} |
| 276 |
|
| 277 |
.view { |
| 278 |
color: #00f; |
| 279 |
} |
| 280 |
|
| 281 |
.shards { |
| 282 |
font-family: monospace; |
| 283 |
// line-height: 0.8em; |
| 284 |
color: #0f0; |
| 285 |
} |
| 286 |
|
| 287 |
.send { |
| 288 |
color: #ff0; |
| 289 |
} |
| 290 |
|
| 291 |
.wait { |
| 292 |
color: #f00; |
| 293 |
} |
| 294 |
|
| 295 |
|
| 296 |
</style> |
| 297 |
|
| 298 |
|; |
| 299 |
|
| 300 |
my $out = Sack::Merge->out; |
| 301 |
if ( my $li = join("\n", map { qq|<li><input type=checkbox name=filter value="$_"><a href="/out/$_" target="$_">$_</a>| } keys %$out ) ) { |
| 302 |
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|; |
| 303 |
} |
| 304 |
|
| 305 |
print $send qq|<h1>Views</h1><ul>| |
| 306 |
, join("\n", map { |
| 307 |
my $view = $_; |
| 308 |
my $html = ''; |
| 309 |
if ( my $s = $info->{view}->{$view} ) { |
| 310 |
my @nodes = sort keys %$s; |
| 311 |
my $total = 0; |
| 312 |
$html .= qq|<table><tr><th>node</th><th>rows</th><th>shards</th><th>∑</th><th>merge</th></tr>|; |
| 313 |
foreach my $node ( @nodes ) { |
| 314 |
my $h = ''; |
| 315 |
my $shard = 0; |
| 316 |
foreach my $path ( sort keys %{ $s->{$node} } ) { |
| 317 |
my $affected = $s->{$node}->{$path}; |
| 318 |
my $n = '?'; |
| 319 |
$n = $1 if $path =~ m{/(\w)\w+/\d+}; |
| 320 |
my $class = $affected == 0 ? 'style="color: #888"' : ''; |
| 321 |
$h .= qq|<tt title="$affected $path"$class>$n</tt>|; |
| 322 |
$shard += $affected; |
| 323 |
$total += $affected; |
| 324 |
} |
| 325 |
my $merge = $info->{merge}->{$view}->{$node} || '?'; |
| 326 |
$html .= qq|<tr><td><tt>$node</tt></td><td>$shard</td><td>$h</td><td>$total</td><td>$merge</td></tr>\n|; |
| 327 |
} |
| 328 |
|
| 329 |
$html .= qq|</table>|; |
| 330 |
}; |
| 331 |
qq|<li><a href="$view">$view</a>$html| |
| 332 |
} glob '/srv/Sack/views/*/*.pl' ) |
| 333 |
, qq|</ul>| |
| 334 |
; |
| 335 |
|
| 336 |
print $send qq|<h1>Nodes</h1>|; |
| 337 |
foreach my $node ( sort keys %{ $info->{forked} } ) { |
| 338 |
my $attr = qq| title="$info->{host}->{$node}"|; |
| 339 |
if ( my $pending = $info->{pending}->{$node} ) { |
| 340 |
$attr .= qq| class="$pending"|; |
| 341 |
} |
| 342 |
print $send qq|<tt$attr>$node</tt>\n|; |
| 343 |
} |
| 344 |
print $send qq|<a target=details href=/nodes/>details</a>|; |
| 345 |
|
| 346 |
print $send qq|<h1>Shards</h1><ul>|; |
| 347 |
foreach my $path ( glob '/tmp/sack/*' ) { |
| 348 |
print $send qq|<li><a href="$path">$path</a><div class="shards">|; |
| 349 |
foreach my $s ( sort grep { m/$path/ } keys %{ $info->{shard} } ) { |
| 350 |
my $i = $info->{shard}->{$s}; |
| 351 |
print $send qq|<span class="$i" title="$s">$i</span> |; |
| 352 |
} |
| 353 |
print $send qq|</div>|; |
| 354 |
} |
| 355 |
print $send qq|</ul>|; |
| 356 |
|
| 357 |
if ( $param->{info} ) { |
| 358 |
print $send qq|<a href="?info=0">hide info</a>|; |
| 359 |
print $send '<pre>', dump($info), '</pre>' |
| 360 |
} else { |
| 361 |
print $send qq|<a href="?info=1">show info</a>|; |
| 362 |
} |
| 363 |
return 1; |
| 364 |
} ); |
| 365 |
} else { |
| 366 |
my $data = eval { Storable::fd_retrieve( $sock ) }; |
| 367 |
if ( $@ ) { |
| 368 |
delete $session->{$sock}; |
| 369 |
warn "[socket] disconnect: $@\n"; |
| 370 |
$sel->remove($sock); |
| 371 |
$sock->close; |
| 372 |
} else { |
| 373 |
warn "<<<< ", dump($data), $/ if $debug; |
| 374 |
|
| 375 |
if ( my $path = $data->{shard} ) { |
| 376 |
$info->{shard}->{ $path } = $data->{port}; |
| 377 |
# FIXME will need push for multiple copies of shards |
| 378 |
} |
| 379 |
|
| 380 |
if ( my $repl = $data->{repl} ) { |
| 381 |
my $response = { repl_pid => $$ }; |
| 382 |
if ( $repl =~ m/ping/ ) { |
| 383 |
to_all { ping => 1 }; |
| 384 |
} elsif ( $repl =~ m/info/ ) { |
| 385 |
$response->{info} = $info; |
| 386 |
} elsif ( $repl =~ m{load\s*(\S+)?} ) { |
| 387 |
load_shard $1; |
| 388 |
} elsif ( $repl =~ m{view\s*(\S+)?} ) { |
| 389 |
run_view $1; |
| 390 |
} elsif ( $repl =~ m{out} ) { |
| 391 |
my $out = Sack::Merge->out; |
| 392 |
warn "out ",dump( $out ); |
| 393 |
$response->{out} = $out; |
| 394 |
} elsif ( $repl =~ m{clean} ) { |
| 395 |
delete $info->{shard}; |
| 396 |
to_all { clean => 1 }; |
| 397 |
} elsif ( $repl eq 'exit' ) { |
| 398 |
to_all { exit => 1 }; |
| 399 |
sleep 1; |
| 400 |
exit; |
| 401 |
} elsif ( $repl eq '.' ) { |
| 402 |
$response->{'.'} = [ @responses ]; |
| 403 |
@responses = (); |
| 404 |
} elsif ( $repl =~ m{(\w+)\s*(.+)?} ) { |
| 405 |
to_all { $1 => $2 }; |
| 406 |
} else { |
| 407 |
$response->{error}->{repl} = $repl; |
| 408 |
} |
| 409 |
Storable::store_fd( $response, $sock ); |
| 410 |
} elsif ( $data->{ping} ) { |
| 411 |
my $port = $data->{port}; |
| 412 |
delete( $info->{pending}->{$port} ) if defined $info->{pending}->{$port} && $info->{pending}->{$port} eq 'forked'; |
| 413 |
$session->{port}->{$port} = $sock; |
| 414 |
foreach my $name ( keys %{$data->{proc}} ) { |
| 415 |
if ( $name eq 'loadavg' ) { |
| 416 |
$info->{proc}->{$port}->{loadavg} = [ split(/\s+/, $data->{proc}->{$name}) ]; |
| 417 |
} else { |
| 418 |
foreach my $line ( split(/\n/,$data->{proc}->{$name}) ) { |
| 419 |
my ($n,$v) = split(/:\s+/,$line); |
| 420 |
$info->{proc}->{$port}->{$n} = $v; |
| 421 |
} |
| 422 |
} |
| 423 |
} |
| 424 |
} elsif ( defined $data->{load} && $data->{load} eq 'shard' ) { |
| 425 |
if ( my $path = shift @shard_load_queue ) { |
| 426 |
$info->{shard}->{$path} = 'read'; |
| 427 |
my $shard = Storable::retrieve $path; |
| 428 |
$info->{shard}->{$path} = 'send'; |
| 429 |
warn ">>>> [", $data->{port}, "] sending shard $path\n"; |
| 430 |
Storable::store_fd( { path => $path, shard => $shard }, $sock ); |
| 431 |
} else { |
| 432 |
warn "no more shards for [", $data->{port}, "]\n"; |
| 433 |
delete $info->{pending}->{ $data->{port} }; |
| 434 |
} |
| 435 |
} elsif ( exists $data->{out} ) { |
| 436 |
my $added = Sack::Merge->add( $data->{out} ) if defined $data->{out}; |
| 437 |
$info->{merge}->{ $data->{view} }->{ $data->{port} } = $added; |
| 438 |
$info->{view }->{ $data->{view} }->{ $data->{port} } = $data->{on_shard}; |
| 439 |
# refresh shard allocation |
| 440 |
$info->{shard}->{ $_ } = $data->{port} foreach keys %{ $data->{on_shard} }; |
| 441 |
delete $info->{pending}->{ $data->{port} }; |
| 442 |
} elsif ( exists $data->{port} ) { |
| 443 |
push @responses, $data; |
| 444 |
warn "# ",dump($data),$/; |
| 445 |
} else { |
| 446 |
warn "UNKNOWN ",dump($data); |
| 447 |
} |
| 448 |
} |
| 449 |
} |
| 450 |
} |
| 451 |
} |
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