| 1 | =head1 NAME |
1 | =head1 NAME |
| 2 | |
2 | |
| 3 | DC::DB - async. database and filesystem access for cfplus |
3 | DC::DB - async. database and filesystem access for deliantra |
| 4 | |
4 | |
| 5 | =head1 SYNOPSIS |
5 | =head1 SYNOPSIS |
| 6 | |
6 | |
| 7 | use DC::DB; |
7 | use DC::DB; |
| 8 | |
8 | |
| … | |
… | |
| 15 | package DC::DB; |
15 | package DC::DB; |
| 16 | |
16 | |
| 17 | use strict; |
17 | use strict; |
| 18 | use utf8; |
18 | use utf8; |
| 19 | |
19 | |
|
|
20 | use File::Path (); |
| 20 | use Carp (); |
21 | use Carp (); |
| 21 | use Storable (); |
22 | use Storable (); |
| 22 | use Config; |
23 | use Config; |
| 23 | use BDB; |
24 | use BDB; |
| 24 | |
25 | |
| 25 | use DC; |
26 | use DC; |
| 26 | |
27 | |
| 27 | our $DBDIR = "cfplus-" . BDB::VERSION . "-$Config{archname}"; |
28 | our $ODBDIR = "cfplus-" . BDB::VERSION_MAJOR . "." . BDB::VERSION_MINOR . "-$Config{archname}"; |
|
|
29 | our $DBDIR = "client-" . BDB::VERSION_MAJOR . "." . BDB::VERSION_MINOR . "-$Config{archname}"; |
| 28 | our $DB_HOME = "$Deliantra::VARDIR/$DBDIR"; |
30 | our $DB_HOME = "$Deliantra::VARDIR/$DBDIR"; |
| 29 | |
31 | |
| 30 | if (!-e $DB_HOME and -e "$Deliantra::OLDDIR/$DBDIR") { |
32 | unless (-d $DB_HOME) { |
|
|
33 | if (-d "$Deliantra::VARDIR/$ODBDIR") { |
|
|
34 | rename "$Deliantra::VARDIR/$ODBDIR", $DB_HOME; |
|
|
35 | print STDERR "INFO: moved old database from $Deliantra::VARDIR/$ODBDIR to $DB_HOME\n"; |
|
|
36 | } elsif (-d "$Deliantra::OLDDIR/$ODBDIR") { |
| 31 | rename "$Deliantra::OLDDIR/$DBDIR", $DB_HOME; |
37 | rename "$Deliantra::OLDDIR/$DBDIR", $DB_HOME; |
| 32 | print STDERR "INFO: moved old database from $Deliantra::OLDDIR/$DBDIR to $DB_HOME\n"; |
38 | print STDERR "INFO: moved old database from $Deliantra::OLDDIR/$ODBDIR to $DB_HOME\n"; |
|
|
39 | } else { |
|
|
40 | File::Path::mkpath [$DB_HOME] |
|
|
41 | or die "unable to create database directory $DB_HOME: $!"; |
|
|
42 | } |
| 33 | } |
43 | } |
|
|
44 | |
|
|
45 | BDB::max_poll_time 0.03; |
|
|
46 | BDB::max_parallel 1; |
| 34 | |
47 | |
| 35 | our $DB_ENV; |
48 | our $DB_ENV; |
| 36 | our $DB_STATE; |
49 | our $DB_STATE; |
| 37 | our %DB_TABLE; |
50 | our %DB_TABLE; |
|
|
51 | our $TILE_SEQ; |
| 38 | |
52 | |
| 39 | sub open_db { |
53 | sub try_open_db { |
| 40 | mkdir $DB_HOME, 0777; |
54 | File::Path::mkpath [$DB_HOME]; |
| 41 | |
55 | |
| 42 | $DB_ENV = db_env_create; |
56 | my $env = db_env_create; |
| 43 | |
57 | |
| 44 | $DB_ENV->set_errfile (\*STDERR); |
58 | $env->set_errfile (\*STDERR); |
| 45 | $DB_ENV->set_msgfile (\*STDERR); |
59 | $env->set_msgfile (\*STDERR); |
| 46 | $DB_ENV->set_verbose (-1, 1); |
60 | $env->set_verbose (-1, 1); |
| 47 | |
61 | |
| 48 | $DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::LOG_AUTOREMOVE | BDB::TXN_WRITE_NOSYNC); |
62 | $env->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT); |
|
|
63 | $env->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7; |
|
|
64 | $env->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7; |
|
|
65 | |
|
|
66 | $env->set_timeout (3, BDB::SET_TXN_TIMEOUT); |
|
|
67 | $env->set_timeout (3, BDB::SET_LOCK_TIMEOUT); |
|
|
68 | |
| 49 | $DB_ENV->set_cachesize (0, 2048 * 1024, 0); |
69 | $env->set_cachesize (0, 2048 * 1024, 0); |
| 50 | |
70 | |
| 51 | db_env_open $DB_ENV, $DB_HOME, |
71 | db_env_open $env, $DB_HOME, |
| 52 | BDB::CREATE | BDB::REGISTER | BDB::RECOVER | BDB::INIT_MPOOL | BDB::INIT_LOCK | BDB::INIT_TXN, |
72 | BDB::CREATE | BDB::REGISTER | BDB::RECOVER | BDB::INIT_MPOOL | BDB::INIT_LOCK | BDB::INIT_TXN, |
| 53 | 0666; |
73 | 0666; |
| 54 | |
74 | |
| 55 | $! and die "cannot open database environment $DB_HOME: " . BDB::strerror; |
75 | $! and die "cannot open database environment $DB_HOME: " . BDB::strerror; |
|
|
76 | |
|
|
77 | $DB_ENV = $env; |
| 56 | |
78 | |
| 57 | 1 |
79 | 1 |
| 58 | } |
80 | } |
| 59 | |
81 | |
| 60 | sub table($) { |
82 | sub table($) { |
| … | |
… | |
| 75 | } |
97 | } |
| 76 | } |
98 | } |
| 77 | |
99 | |
| 78 | ############################################################################# |
100 | ############################################################################# |
| 79 | |
101 | |
| 80 | unless (eval { open_db }) { |
102 | our $WATCHER; |
| 81 | warn "$@";#d# |
103 | our $SYNC; |
| 82 | eval { File::Path::rmtree $DB_HOME }; |
|
|
| 83 | open_db; |
|
|
| 84 | } |
|
|
| 85 | |
|
|
| 86 | our $WATCHER = EV::io BDB::poll_fileno, EV::READ, \&BDB::poll_cb; |
|
|
| 87 | |
|
|
| 88 | our $SYNC = EV::timer_ns 0, 60, sub { |
|
|
| 89 | $_[0]->stop; |
|
|
| 90 | db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { }; |
|
|
| 91 | }; |
|
|
| 92 | |
|
|
| 93 | our $tilemap; |
104 | our $facemap; |
| 94 | |
105 | |
| 95 | sub exists($$$) { |
106 | sub exists($$$) { |
| 96 | my ($db, $key, $cb) = @_; |
107 | my ($db, $key, $cb) = @_; |
| 97 | |
108 | |
| 98 | my $data; |
109 | my $data; |
| … | |
… | |
| 140 | my ($name, $cb) = @_; |
151 | my ($name, $cb) = @_; |
| 141 | |
152 | |
| 142 | my $table = table "facemap"; |
153 | my $table = table "facemap"; |
| 143 | my $id; |
154 | my $id; |
| 144 | |
155 | |
| 145 | db_get $table, undef, $name, $id, 0; |
156 | db_get $table, undef, $name => $id, 0; |
| 146 | return $cb->($id) unless $!; |
157 | $! or return $cb->($id); |
| 147 | |
158 | |
| 148 | for (1..100) { |
159 | unless ($TILE_SEQ) { |
| 149 | my $txn = $DB_ENV->txn_begin; |
160 | $TILE_SEQ = $table->sequence; |
| 150 | db_get $table, $txn, id => $id, 0; |
161 | $TILE_SEQ->initial_value (64); |
|
|
162 | $TILE_SEQ->set_cachesize (0); |
|
|
163 | db_sequence_open $TILE_SEQ, undef, "id", BDB::CREATE; |
|
|
164 | } |
| 151 | |
165 | |
| 152 | $id = 64 if $id < 64; |
166 | db_sequence_get $TILE_SEQ, undef, 1, my $id; |
| 153 | |
167 | |
| 154 | ++$id; |
168 | die "unable to allocate tile id: $!" |
| 155 | |
169 | if $!; |
| 156 | db_put $table, $txn, id => $id, 0; |
|
|
| 157 | db_txn_finish $txn; |
|
|
| 158 | |
|
|
| 159 | $SYNC->again unless $SYNC->is_active; |
|
|
| 160 | |
|
|
| 161 | return $cb->($id) unless $!; |
|
|
| 162 | |
|
|
| 163 | select undef, undef, undef, 0.01 * rand; |
|
|
| 164 | } |
170 | |
|
|
171 | db_put $table, undef, $name => $id, 0; |
|
|
172 | $cb->($id); |
| 165 | |
173 | |
| 166 | die "maximum number of transaction retries reached - database problems?"; |
|
|
| 167 | } |
174 | } |
| 168 | |
175 | |
| 169 | sub get_tile_id_sync($) { |
176 | sub get_tile_id_sync($) { |
| 170 | my ($name) = @_; |
177 | my ($name) = @_; |
| 171 | |
178 | |
| 172 | # fetch the full face table first |
|
|
| 173 | unless ($tilemap) { |
|
|
| 174 | do_table facemap => sub { |
|
|
| 175 | $tilemap = $_[0]; |
|
|
| 176 | delete $tilemap->{id}; |
|
|
| 177 | my %maptile = reverse %$tilemap;#d# |
|
|
| 178 | if ((scalar keys %$tilemap) != (scalar keys %maptile)) {#d# |
|
|
| 179 | $tilemap = { };#d# |
|
|
| 180 | DC::error "FATAL: facemap is not a 1:1 mapping, please report this and delete your $DB_HOME directory!\n";#d# |
|
|
| 181 | }#d# |
|
|
| 182 | }; |
|
|
| 183 | BDB::flush; |
|
|
| 184 | } |
|
|
| 185 | |
|
|
| 186 | $tilemap->{$name} ||= do { |
179 | $facemap->{$name} ||= do { |
| 187 | my $id; |
180 | my $id; |
| 188 | do_get_tile_id $name, sub { |
181 | do_get_tile_id $name, sub { |
| 189 | $id = $_[0]; |
182 | $id = $_[0]; |
| 190 | }; |
183 | }; |
| 191 | BDB::flush; |
184 | BDB::flush; |
| … | |
… | |
| 223 | } |
216 | } |
| 224 | |
217 | |
| 225 | sub logprint($$$) { |
218 | sub logprint($$$) { |
| 226 | DC::DB::Server::req (logprint => @_); |
219 | DC::DB::Server::req (logprint => @_); |
| 227 | } |
220 | } |
|
|
221 | |
|
|
222 | ############################################################################# |
| 228 | |
223 | |
| 229 | package DC::DB::Server; |
224 | package DC::DB::Server; |
| 230 | |
225 | |
| 231 | use strict; |
226 | use strict; |
| 232 | |
227 | |
| … | |
… | |
| 363 | my $oldfh = select $fh; $| = 1; select $oldfh; |
358 | my $oldfh = select $fh; $| = 1; select $oldfh; |
| 364 | |
359 | |
| 365 | my $pid = fork; |
360 | my $pid = fork; |
| 366 | |
361 | |
| 367 | if (defined $pid && !$pid) { |
362 | if (defined $pid && !$pid) { |
| 368 | local $SIG{QUIT}; |
363 | local $SIG{QUIT} = "IGNORE"; |
| 369 | local $SIG{__DIE__}; |
364 | local $SIG{__DIE__}; |
| 370 | local $SIG{__WARN__}; |
365 | local $SIG{__WARN__}; |
| 371 | eval { |
366 | eval { |
| 372 | close $FH; |
367 | close $FH; |
| 373 | |
368 | |
| … | |
… | |
| 412 | |
407 | |
| 413 | sub stop { |
408 | sub stop { |
| 414 | close $FH; |
409 | close $FH; |
| 415 | } |
410 | } |
| 416 | |
411 | |
|
|
412 | package DC::DB; |
|
|
413 | |
|
|
414 | sub nuke_db { |
|
|
415 | File::Path::mkpath [$DB_HOME]; |
|
|
416 | eval { File::Path::rmtree $DB_HOME }; |
|
|
417 | } |
|
|
418 | |
|
|
419 | sub open_db { |
|
|
420 | unless (eval { try_open_db }) { |
|
|
421 | warn "$@";#d# |
|
|
422 | eval { nuke_db }; |
|
|
423 | try_open_db; |
|
|
424 | } |
|
|
425 | |
|
|
426 | # fetch the full face table first |
|
|
427 | unless ($facemap) { |
|
|
428 | do_table facemap => sub { |
|
|
429 | $facemap = $_[0]; |
|
|
430 | delete $facemap->{id}; |
|
|
431 | my %maptile = reverse %$facemap;#d# |
|
|
432 | if ((scalar keys %$facemap) != (scalar keys %maptile)) {#d# |
|
|
433 | $facemap = { };#d# |
|
|
434 | DC::error "FATAL: facemap is not a 1:1 mapping, please report this and delete your $DB_HOME directory!\n";#d# |
|
|
435 | }#d# |
|
|
436 | }; |
|
|
437 | } |
|
|
438 | |
|
|
439 | $WATCHER = EV::io BDB::poll_fileno, EV::READ, \&BDB::poll_cb; |
|
|
440 | $SYNC = EV::timer_ns 0, 60, sub { |
|
|
441 | $_[0]->stop; |
|
|
442 | db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { }; |
|
|
443 | }; |
|
|
444 | } |
|
|
445 | |
|
|
446 | END { |
|
|
447 | db_env_txn_checkpoint $DB_ENV, 0, 0, 0 |
|
|
448 | if $DB_ENV; |
|
|
449 | |
|
|
450 | undef $TILE_SEQ; |
|
|
451 | %DB_TABLE = (); |
|
|
452 | undef $DB_ENV; |
|
|
453 | } |
|
|
454 | |
| 417 | 1; |
455 | 1; |
| 418 | |
456 | |
| 419 | =back |
457 | =back |
| 420 | |
458 | |
| 421 | =head1 AUTHOR |
459 | =head1 AUTHOR |
