… | |
… | |
15 | use Coro::Timer; |
15 | use Coro::Timer; |
16 | use Coro::Signal; |
16 | use Coro::Signal; |
17 | use Coro::Semaphore; |
17 | use Coro::Semaphore; |
18 | use Coro::AIO; |
18 | use Coro::AIO; |
19 | |
19 | |
|
|
20 | use BDB (); |
20 | use Data::Dumper; |
21 | use Data::Dumper; |
21 | use Digest::MD5; |
22 | use Digest::MD5; |
22 | use Fcntl; |
23 | use Fcntl; |
23 | use IO::AIO 2.32 (); |
24 | use IO::AIO 2.32 (); |
24 | use YAML::Syck (); |
25 | use YAML::Syck (); |
25 | use Time::HiRes; |
26 | use Time::HiRes; |
|
|
27 | use Compress::LZF; |
|
|
28 | |
|
|
29 | Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later |
26 | |
30 | |
27 | use Event; $Event::Eval = 1; # no idea why this is required, but it is |
31 | use Event; $Event::Eval = 1; # no idea why this is required, but it is |
28 | |
32 | |
29 | sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload |
33 | sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload |
30 | |
34 | |
… | |
… | |
48 | our $TICK_WATCHER; |
52 | our $TICK_WATCHER; |
49 | our $AIO_POLL_WATCHER; |
53 | our $AIO_POLL_WATCHER; |
50 | our $WRITE_RUNTIME_WATCHER; |
54 | our $WRITE_RUNTIME_WATCHER; |
51 | our $NEXT_TICK; |
55 | our $NEXT_TICK; |
52 | our $NOW; |
56 | our $NOW; |
|
|
57 | our $USE_FSYNC = 1; # use fsync to write maps - default off |
|
|
58 | |
|
|
59 | our $BDB_POLL_WATCHER; |
|
|
60 | our $DB_ENV; |
53 | |
61 | |
54 | our %CFG; |
62 | our %CFG; |
55 | |
63 | |
56 | our $UPTIME; $UPTIME ||= time; |
64 | our $UPTIME; $UPTIME ||= time; |
57 | our $RUNTIME; |
65 | our $RUNTIME; |
58 | |
66 | |
59 | our %PLAYER; # all users |
67 | our %PLAYER; # all users |
60 | our %MAP; # all maps |
68 | our %MAP; # all maps |
61 | our $LINK_MAP; # the special {link} map, which is always available |
69 | our $LINK_MAP; # the special {link} map, which is always available |
62 | our $RANDOM_MAPS = cf::localdir . "/random"; |
70 | our $RANDOM_MAPS = cf::localdir . "/random"; |
|
|
71 | our $BDB_ENV_DIR = cf::localdir . "/db"; |
63 | |
72 | |
64 | our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal; |
73 | our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal; |
65 | our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal; |
74 | our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal; |
66 | |
75 | |
67 | # used to convert map paths into valid unix filenames by replacing / by ∕ |
76 | # used to convert map paths into valid unix filenames by replacing / by ∕ |
… | |
… | |
80 | mkdir cf::localdir; |
89 | mkdir cf::localdir; |
81 | mkdir cf::localdir . "/" . cf::playerdir; |
90 | mkdir cf::localdir . "/" . cf::playerdir; |
82 | mkdir cf::localdir . "/" . cf::tmpdir; |
91 | mkdir cf::localdir . "/" . cf::tmpdir; |
83 | mkdir cf::localdir . "/" . cf::uniquedir; |
92 | mkdir cf::localdir . "/" . cf::uniquedir; |
84 | mkdir $RANDOM_MAPS; |
93 | mkdir $RANDOM_MAPS; |
|
|
94 | mkdir $BDB_ENV_DIR; |
85 | |
95 | |
86 | our $EMERGENCY_POSITION; |
96 | our $EMERGENCY_POSITION; |
87 | |
97 | |
88 | sub cf::map::normalise; |
98 | sub cf::map::normalise; |
89 | |
99 | |
… | |
… | |
358 | # 60 allows for the watchdog to kill the server. |
368 | # 60 allows for the watchdog to kill the server. |
359 | |
369 | |
360 | (aio_write $fh, 0, (length $value), $value, 0) <= 0 |
370 | (aio_write $fh, 0, (length $value), $value, 0) <= 0 |
361 | and return; |
371 | and return; |
362 | |
372 | |
|
|
373 | # always fsync - this file is important |
363 | aio_fsync $fh |
374 | aio_fsync $fh |
364 | and return; |
375 | and return; |
365 | |
376 | |
366 | close $fh |
377 | close $fh |
367 | or return; |
378 | or return; |
… | |
… | |
752 | $filename, length $$rdata, scalar @$objs; |
763 | $filename, length $$rdata, scalar @$objs; |
753 | |
764 | |
754 | if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) { |
765 | if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) { |
755 | chmod SAVE_MODE, $fh; |
766 | chmod SAVE_MODE, $fh; |
756 | aio_write $fh, 0, (length $$rdata), $$rdata, 0; |
767 | aio_write $fh, 0, (length $$rdata), $$rdata, 0; |
757 | aio_fsync $fh; |
768 | aio_fsync $fh if $cf::USE_FSYNC; |
758 | close $fh; |
769 | close $fh; |
759 | |
770 | |
760 | if (@$objs) { |
771 | if (@$objs) { |
761 | if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) { |
772 | if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) { |
762 | chmod SAVE_MODE, $fh; |
773 | chmod SAVE_MODE, $fh; |
763 | my $data = Storable::nfreeze { version => 1, objs => $objs }; |
774 | my $data = Storable::nfreeze { version => 1, objs => $objs }; |
764 | aio_write $fh, 0, (length $data), $data, 0; |
775 | aio_write $fh, 0, (length $data), $data, 0; |
765 | aio_fsync $fh; |
776 | aio_fsync $fh if $cf::USE_FSYNC; |
766 | close $fh; |
777 | close $fh; |
767 | aio_rename "$filename.pst~", "$filename.pst"; |
778 | aio_rename "$filename.pst~", "$filename.pst"; |
768 | } |
779 | } |
769 | } else { |
780 | } else { |
770 | aio_unlink "$filename.pst"; |
781 | aio_unlink "$filename.pst"; |
… | |
… | |
2003 | # get handled first |
2014 | # get handled first |
2004 | my $queue = delete $ns->{query_queue} |
2015 | my $queue = delete $ns->{query_queue} |
2005 | or return; # be conservative, not sure how that can happen, but we saw a crash here |
2016 | or return; # be conservative, not sure how that can happen, but we saw a crash here |
2006 | |
2017 | |
2007 | (shift @$queue)->[1]->($msg); |
2018 | (shift @$queue)->[1]->($msg); |
|
|
2019 | return unless $ns->valid; # temporary(?) workaround for callback destroying socket |
2008 | |
2020 | |
2009 | push @{ $ns->{query_queue} }, @$queue; |
2021 | push @{ $ns->{query_queue} }, @$queue; |
2010 | |
2022 | |
2011 | if (@{ $ns->{query_queue} } == @$queue) { |
2023 | if (@{ $ns->{query_queue} } == @$queue) { |
2012 | if (@$queue) { |
2024 | if (@$queue) { |
… | |
… | |
2173 | The parameter C<$family> should best start with the name of the extension |
2185 | The parameter C<$family> should best start with the name of the extension |
2174 | using it, it should be unique. |
2186 | using it, it should be unique. |
2175 | |
2187 | |
2176 | =over 4 |
2188 | =over 4 |
2177 | |
2189 | |
2178 | =item $hashref = cf::db_get $family |
|
|
2179 | |
|
|
2180 | Return a hashref for use by the extension C<$family>, which can be |
|
|
2181 | modified. After modifications, you have to call C<cf::db_dirty> or |
|
|
2182 | C<cf::db_sync>. |
|
|
2183 | |
|
|
2184 | =item $value = cf::db_get $family => $key |
2190 | =item $value = cf::db_get $family => $key |
2185 | |
2191 | |
2186 | Returns a single value from the database |
2192 | Returns a single value from the database. |
2187 | |
|
|
2188 | =item cf::db_put $family => $hashref |
|
|
2189 | |
|
|
2190 | Stores the given family hashref into the database. Updates are delayed, if |
|
|
2191 | you want the data to be synced to disk immediately, use C<cf::db_sync>. |
|
|
2192 | |
2193 | |
2193 | =item cf::db_put $family => $key => $value |
2194 | =item cf::db_put $family => $key => $value |
2194 | |
2195 | |
2195 | Stores the given C<$value> in the family hash. Updates are delayed, if you |
2196 | Stores the given C<$value> in the family. |
2196 | want the data to be synced to disk immediately, use C<cf::db_sync>. |
|
|
2197 | |
|
|
2198 | =item cf::db_dirty |
|
|
2199 | |
|
|
2200 | Marks the database as dirty, to be updated at a later time. |
|
|
2201 | |
|
|
2202 | =item cf::db_sync |
|
|
2203 | |
|
|
2204 | Immediately write the database to disk I<if it is dirty>. |
|
|
2205 | |
2197 | |
2206 | =cut |
2198 | =cut |
2207 | |
2199 | |
2208 | our $DB; |
2200 | our $DB; |
2209 | |
2201 | |
2210 | { |
2202 | sub db_load() { |
|
|
2203 | unless ($DB) { |
|
|
2204 | $DB = BDB::db_create $DB_ENV; |
|
|
2205 | |
|
|
2206 | cf::sync_job { |
|
|
2207 | eval { |
|
|
2208 | $DB->set_flags (BDB::CHKSUM); |
|
|
2209 | |
|
|
2210 | BDB::db_open $DB, undef, "db", undef, BDB::BTREE, |
|
|
2211 | BDB::CREATE | BDB::AUTO_COMMIT, 0666; |
|
|
2212 | cf::cleanup "db_open(db): $!" if $!; |
|
|
2213 | }; |
|
|
2214 | cf::cleanup "db_open(db): $@" if $@; |
|
|
2215 | }; |
|
|
2216 | |
2211 | my $path = cf::localdir . "/database.pst"; |
2217 | my $path = cf::localdir . "/database.pst"; |
|
|
2218 | if (stat $path) { |
|
|
2219 | cf::sync_job { |
|
|
2220 | my $pst = Storable::retrieve $path; |
2212 | |
2221 | |
2213 | sub db_load() { |
2222 | cf::db_put (board => data => $pst->{board}); |
2214 | $DB = stat $path ? Storable::retrieve $path : { }; |
2223 | cf::db_put (guildrules => data => $pst->{guildrules}); |
2215 | } |
2224 | cf::db_put (rent => balance => $pst->{rent}{balance}); |
|
|
2225 | BDB::db_env_txn_checkpoint $DB_ENV; |
2216 | |
2226 | |
2217 | my $pid; |
2227 | unlink $path; |
2218 | |
|
|
2219 | sub db_save() { |
|
|
2220 | waitpid $pid, 0 if $pid; |
|
|
2221 | if (0 == ($pid = fork)) { |
|
|
2222 | $DB->{_meta}{version} = 1; |
|
|
2223 | Storable::nstore $DB, "$path~"; |
|
|
2224 | rename "$path~", $path; |
|
|
2225 | cf::_exit 0 if defined $pid; |
|
|
2226 | } |
2228 | }; |
2227 | } |
|
|
2228 | |
|
|
2229 | my $dirty; |
|
|
2230 | |
|
|
2231 | sub db_sync() { |
|
|
2232 | db_save if $dirty; |
|
|
2233 | undef $dirty; |
|
|
2234 | } |
|
|
2235 | |
|
|
2236 | my $idle = Event->idle ( |
|
|
2237 | reentrant => 0, |
|
|
2238 | min => 10, |
|
|
2239 | max => 20, |
|
|
2240 | repeat => 0, |
|
|
2241 | data => WF_AUTOCANCEL, |
|
|
2242 | cb => \&db_sync, |
|
|
2243 | ); |
|
|
2244 | |
|
|
2245 | sub db_dirty() { |
|
|
2246 | $dirty = 1; |
|
|
2247 | $idle->start; |
|
|
2248 | } |
|
|
2249 | |
|
|
2250 | sub db_get($;$) { |
|
|
2251 | @_ >= 2 |
|
|
2252 | ? $DB->{$_[0]}{$_[1]} |
|
|
2253 | : ($DB->{$_[0]} ||= { }) |
|
|
2254 | } |
|
|
2255 | |
|
|
2256 | sub db_put($$;$) { |
|
|
2257 | if (@_ >= 3) { |
|
|
2258 | $DB->{$_[0]}{$_[1]} = $_[2]; |
|
|
2259 | } else { |
|
|
2260 | $DB->{$_[0]} = $_[1]; |
|
|
2261 | } |
|
|
2262 | db_dirty; |
|
|
2263 | } |
|
|
2264 | |
|
|
2265 | cf::global->attach ( |
|
|
2266 | prio => 10000, |
|
|
2267 | on_cleanup => sub { |
|
|
2268 | db_sync; |
|
|
2269 | }, |
2229 | } |
2270 | ); |
2230 | } |
|
|
2231 | } |
|
|
2232 | |
|
|
2233 | sub db_get($$) { |
|
|
2234 | my $key = "$_[0]/$_[1]"; |
|
|
2235 | |
|
|
2236 | cf::sync_job { |
|
|
2237 | BDB::db_get $DB, undef, $key, my $data; |
|
|
2238 | |
|
|
2239 | $! ? () |
|
|
2240 | : Compress::LZF::sthaw $data |
|
|
2241 | } |
|
|
2242 | } |
|
|
2243 | |
|
|
2244 | sub db_put($$$) { |
|
|
2245 | BDB::dbreq_pri 4; |
|
|
2246 | BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { }; |
2271 | } |
2247 | } |
2272 | |
2248 | |
2273 | ############################################################################# |
2249 | ############################################################################# |
2274 | # the server's main() |
2250 | # the server's init and main functions |
|
|
2251 | |
|
|
2252 | sub load_resources { |
|
|
2253 | load_regions sprintf "%s/%s/regions", cf::datadir, cf::mapdir |
|
|
2254 | or die "unable to load regions file\n";#d# |
|
|
2255 | } |
2275 | |
2256 | |
2276 | sub cfg_load { |
2257 | sub cfg_load { |
2277 | open my $fh, "<:utf8", cf::confdir . "/config" |
2258 | open my $fh, "<:utf8", cf::confdir . "/config" |
2278 | or return; |
2259 | or return; |
2279 | |
2260 | |
… | |
… | |
2290 | $CFG{mlockall} ? eval "mlockall()" : eval "munlockall()" |
2271 | $CFG{mlockall} ? eval "mlockall()" : eval "munlockall()" |
2291 | and die "WARNING: m(un)lockall failed: $!\n"; |
2272 | and die "WARNING: m(un)lockall failed: $!\n"; |
2292 | }; |
2273 | }; |
2293 | warn $@ if $@; |
2274 | warn $@ if $@; |
2294 | } |
2275 | } |
|
|
2276 | } |
|
|
2277 | |
|
|
2278 | sub init { |
|
|
2279 | load_resources; |
2295 | } |
2280 | } |
2296 | |
2281 | |
2297 | sub main { |
2282 | sub main { |
2298 | # we must not ever block the main coroutine |
2283 | # we must not ever block the main coroutine |
2299 | local $Coro::idle = sub { |
2284 | local $Coro::idle = sub { |
… | |
… | |
2351 | my $map = $cf::MAP{$path} or next; |
2336 | my $map = $cf::MAP{$path} or next; |
2352 | $map->valid or next; |
2337 | $map->valid or next; |
2353 | $map->save; |
2338 | $map->save; |
2354 | } |
2339 | } |
2355 | warn "end emergency map save\n"; |
2340 | warn "end emergency map save\n"; |
|
|
2341 | |
|
|
2342 | warn "begin emergency database checkpoint\n"; |
|
|
2343 | BDB::db_env_txn_checkpoint $DB_ENV; |
|
|
2344 | warn "end emergency database checkpoint\n"; |
2356 | }; |
2345 | }; |
2357 | |
2346 | |
2358 | warn "leave emergency perl save\n"; |
2347 | warn "leave emergency perl save\n"; |
2359 | } |
2348 | } |
2360 | |
2349 | |
… | |
… | |
2373 | cf::emergency_save; |
2362 | cf::emergency_save; |
2374 | |
2363 | |
2375 | eval { |
2364 | eval { |
2376 | # if anything goes wrong in here, we should simply crash as we already saved |
2365 | # if anything goes wrong in here, we should simply crash as we already saved |
2377 | |
2366 | |
2378 | warn "syncing database to disk"; |
|
|
2379 | cf::db_sync; |
|
|
2380 | |
|
|
2381 | warn "cancelling all WF_AUTOCANCEL watchers"; |
2367 | warn "cancelling all WF_AUTOCANCEL watchers"; |
2382 | for (Event::all_watchers) { |
2368 | for (Event::all_watchers) { |
2383 | $_->cancel if $_->data & WF_AUTOCANCEL; |
2369 | $_->cancel if $_->data & WF_AUTOCANCEL; |
2384 | } |
2370 | } |
2385 | |
2371 | |
|
|
2372 | warn "syncing database to disk"; |
|
|
2373 | BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { }; |
|
|
2374 | |
2386 | warn "flushing outstanding aio requests"; |
2375 | warn "flushing outstanding aio requests"; |
2387 | for (;;) { |
2376 | for (;;) { |
|
|
2377 | BDB::flush; |
2388 | IO::AIO::flush; |
2378 | IO::AIO::flush; |
2389 | Coro::cede; |
2379 | Coro::cede; |
2390 | last unless IO::AIO::nreqs; |
2380 | last unless IO::AIO::nreqs || BDB::nreqs; |
2391 | warn "iterate..."; |
2381 | warn "iterate..."; |
2392 | } |
2382 | } |
2393 | |
2383 | |
2394 | warn "cancelling all extension coros"; |
2384 | warn "cancelling all extension coros"; |
2395 | $_->cancel for values %EXT_CORO; |
2385 | $_->cancel for values %EXT_CORO; |
… | |
… | |
2459 | |
2449 | |
2460 | warn "reattaching attachments to objects/players"; |
2450 | warn "reattaching attachments to objects/players"; |
2461 | _global_reattach; |
2451 | _global_reattach; |
2462 | warn "reattaching attachments to maps"; |
2452 | warn "reattaching attachments to maps"; |
2463 | reattach $_ for values %MAP; |
2453 | reattach $_ for values %MAP; |
|
|
2454 | |
|
|
2455 | warn "loading reloadable resources"; |
|
|
2456 | load_resources; |
2464 | |
2457 | |
2465 | warn "restarting server ticker"; |
2458 | warn "restarting server ticker"; |
2466 | |
2459 | |
2467 | $TICK_WATCHER->start; |
2460 | $TICK_WATCHER->start; |
2468 | }; |
2461 | }; |
… | |
… | |
2537 | $TICK_WATCHER->at ($NEXT_TICK); |
2530 | $TICK_WATCHER->at ($NEXT_TICK); |
2538 | $TICK_WATCHER->start; |
2531 | $TICK_WATCHER->start; |
2539 | }, |
2532 | }, |
2540 | ); |
2533 | ); |
2541 | |
2534 | |
|
|
2535 | { |
|
|
2536 | BDB::max_poll_time $TICK * 0.1; |
|
|
2537 | $BDB_POLL_WATCHER = Event->io ( |
|
|
2538 | reentrant => 0, |
|
|
2539 | fd => BDB::poll_fileno, |
|
|
2540 | poll => 'r', |
|
|
2541 | prio => 0, |
|
|
2542 | data => WF_AUTOCANCEL, |
|
|
2543 | cb => \&BDB::poll_cb, |
|
|
2544 | ); |
|
|
2545 | BDB::min_parallel 8; |
|
|
2546 | |
|
|
2547 | BDB::set_sync_prepare { |
|
|
2548 | my $status; |
|
|
2549 | my $current = $Coro::current; |
|
|
2550 | ( |
|
|
2551 | sub { |
|
|
2552 | $status = $!; |
|
|
2553 | $current->ready; undef $current; |
|
|
2554 | }, |
|
|
2555 | sub { |
|
|
2556 | Coro::schedule while defined $current; |
|
|
2557 | $! = $status; |
|
|
2558 | }, |
|
|
2559 | ) |
|
|
2560 | }; |
|
|
2561 | |
|
|
2562 | unless ($DB_ENV) { |
|
|
2563 | $DB_ENV = BDB::db_env_create; |
|
|
2564 | |
|
|
2565 | cf::sync_job { |
|
|
2566 | eval { |
|
|
2567 | BDB::db_env_open |
|
|
2568 | $DB_ENV, |
|
|
2569 | $BDB_ENV_DIR, |
|
|
2570 | BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN |
|
|
2571 | | BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE, |
|
|
2572 | 0666; |
|
|
2573 | |
|
|
2574 | cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!; |
|
|
2575 | |
|
|
2576 | $DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1); |
|
|
2577 | $DB_ENV->set_lk_detect; |
|
|
2578 | }; |
|
|
2579 | |
|
|
2580 | cf::cleanup "db_env_open(db): $@" if $@; |
|
|
2581 | }; |
|
|
2582 | } |
|
|
2583 | } |
|
|
2584 | |
|
|
2585 | { |
|
|
2586 | IO::AIO::min_parallel 8; |
|
|
2587 | |
|
|
2588 | undef $Coro::AIO::WATCHER; |
2542 | IO::AIO::max_poll_time $TICK * 0.1; |
2589 | IO::AIO::max_poll_time $TICK * 0.1; |
2543 | |
|
|
2544 | undef $Coro::AIO::WATCHER; |
|
|
2545 | $AIO_POLL_WATCHER = Event->io ( |
2590 | $AIO_POLL_WATCHER = Event->io ( |
2546 | reentrant => 0, |
2591 | reentrant => 0, |
2547 | fd => IO::AIO::poll_fileno, |
2592 | fd => IO::AIO::poll_fileno, |
2548 | poll => 'r', |
2593 | poll => 'r', |
2549 | prio => 6, |
2594 | prio => 6, |
2550 | data => WF_AUTOCANCEL, |
2595 | data => WF_AUTOCANCEL, |
2551 | cb => \&IO::AIO::poll_cb, |
2596 | cb => \&IO::AIO::poll_cb, |
2552 | ); |
2597 | ); |
|
|
2598 | } |
2553 | |
2599 | |
2554 | $WRITE_RUNTIME_WATCHER = Event->timer ( |
2600 | $WRITE_RUNTIME_WATCHER = Event->timer ( |
2555 | reentrant => 0, |
2601 | reentrant => 0, |
2556 | data => WF_AUTOCANCEL, |
2602 | data => WF_AUTOCANCEL, |
2557 | after => 1, |
2603 | after => 1, |