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15 | package DC::DB; |
15 | package DC::DB; |
16 | |
16 | |
17 | use strict; |
17 | use strict; |
18 | use utf8; |
18 | use utf8; |
19 | |
19 | |
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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 | |
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26 | |
27 | |
27 | our $ODBDIR = "cfplus-" . BDB::VERSION . "-$Config{archname}"; |
28 | our $ODBDIR = "cfplus-" . BDB::VERSION . "-$Config{archname}"; |
28 | our $DBDIR = "client-" . BDB::VERSION . "-$Config{archname}"; |
29 | our $DBDIR = "client-" . BDB::VERSION . "-$Config{archname}"; |
29 | our $DB_HOME = "$Deliantra::VARDIR/$DBDIR"; |
30 | our $DB_HOME = "$Deliantra::VARDIR/$DBDIR"; |
30 | |
31 | |
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32 | unless (-d $DB_HOME) { |
31 | if (!-e $DB_HOME and -e "$Deliantra::VARDIR/$ODBDIR") { |
33 | if (-d "$Deliantra::VARDIR/$ODBDIR") { |
32 | rename "$Deliantra::VARDIR/$ODBDIR", $DB_HOME; |
34 | rename "$Deliantra::VARDIR/$ODBDIR", $DB_HOME; |
33 | print STDERR "INFO: moved old database from $Deliantra::VARDIR/$ODBDIR to $DB_HOME\n"; |
35 | print STDERR "INFO: moved old database from $Deliantra::VARDIR/$ODBDIR to $DB_HOME\n"; |
34 | } |
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35 | |
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36 | if (!-e $DB_HOME and -e "$Deliantra::OLDDIR/$ODBDIR") { |
36 | } elsif (-d "$Deliantra::OLDDIR/$ODBDIR") { |
37 | rename "$Deliantra::OLDDIR/$DBDIR", $DB_HOME; |
37 | rename "$Deliantra::OLDDIR/$DBDIR", $DB_HOME; |
38 | print STDERR "INFO: moved old database from $Deliantra::OLDDIR/$ODBDIR to $DB_HOME\n"; |
38 | print STDERR "INFO: moved old database from $Deliantra::OLDDIR/$ODBDIR to $DB_HOME\n"; |
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39 | } else { |
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40 | File::Path::mkpath [$DB_HOME] |
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41 | or die "unable to create database directory $DB_HOME: $!"; |
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42 | } |
39 | } |
43 | } |
40 | |
44 | |
41 | BDB::max_poll_time 0.03; |
45 | BDB::max_poll_time 0.03; |
42 | BDB::max_parallel 1; |
46 | BDB::max_parallel 1; |
43 | |
47 | |
44 | our $DB_ENV; |
48 | our $DB_ENV; |
45 | our $DB_STATE; |
49 | our $DB_STATE; |
46 | our %DB_TABLE; |
50 | our %DB_TABLE; |
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|
51 | our $TILE_SEQ; |
47 | |
52 | |
48 | sub try_open_db { |
53 | sub try_open_db { |
49 | mkdir $DB_HOME, 0777; |
54 | File::Path::mkpath [$DB_HOME]; |
50 | |
55 | |
51 | $DB_ENV = db_env_create; |
56 | $DB_ENV = db_env_create; |
52 | |
57 | |
53 | $DB_ENV->set_errfile (\*STDERR); |
58 | $DB_ENV->set_errfile (\*STDERR); |
54 | $DB_ENV->set_msgfile (\*STDERR); |
59 | $DB_ENV->set_msgfile (\*STDERR); |
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86 | |
91 | |
87 | ############################################################################# |
92 | ############################################################################# |
88 | |
93 | |
89 | our $WATCHER; |
94 | our $WATCHER; |
90 | our $SYNC; |
95 | our $SYNC; |
91 | our $tilemap; |
96 | our $facemap; |
92 | |
97 | |
93 | sub exists($$$) { |
98 | sub exists($$$) { |
94 | my ($db, $key, $cb) = @_; |
99 | my ($db, $key, $cb) = @_; |
95 | |
100 | |
96 | my $data; |
101 | my $data; |
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138 | my ($name, $cb) = @_; |
143 | my ($name, $cb) = @_; |
139 | |
144 | |
140 | my $table = table "facemap"; |
145 | my $table = table "facemap"; |
141 | my $id; |
146 | my $id; |
142 | |
147 | |
143 | db_get $table, undef, $name, $id, 0; |
148 | db_get $table, undef, $name => $id, 0; |
144 | return $cb->($id) unless $!; |
149 | $! or return $cb->($id); |
145 | |
150 | |
146 | for (1..100) { |
151 | unless ($TILE_SEQ) { |
147 | my $txn = $DB_ENV->txn_begin; |
152 | $TILE_SEQ = $table->sequence; |
148 | db_get $table, $txn, id => $id, 0; |
153 | $TILE_SEQ->initial_value (64); |
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154 | $TILE_SEQ->set_cachesize (0); |
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155 | db_sequence_open $TILE_SEQ, undef, "id", BDB::CREATE; |
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156 | } |
149 | |
157 | |
150 | $id = 64 if $id < 64; |
158 | db_sequence_get $TILE_SEQ, undef, 1, my $id; |
151 | |
159 | |
152 | ++$id; |
160 | die "unable to allocate tile id: $!" |
153 | |
161 | if $!; |
154 | db_put $table, $txn, id => $id, 0; |
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155 | db_txn_finish $txn; |
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156 | |
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157 | $SYNC->again unless $SYNC->is_active; |
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158 | |
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159 | return $cb->($id) unless $!; |
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160 | |
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161 | select undef, undef, undef, 0.01 * rand; |
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162 | } |
162 | |
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163 | db_put $table, undef, $name => $id, 0; |
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164 | $cb->($id); |
163 | |
165 | |
164 | die "maximum number of transaction retries reached - database problems?"; |
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165 | } |
166 | } |
166 | |
167 | |
167 | sub get_tile_id_sync($) { |
168 | sub get_tile_id_sync($) { |
168 | my ($name) = @_; |
169 | my ($name) = @_; |
169 | |
170 | |
170 | $tilemap->{$name} ||= do { |
171 | $facemap->{$name} ||= do { |
171 | my $id; |
172 | my $id; |
172 | do_get_tile_id $name, sub { |
173 | do_get_tile_id $name, sub { |
173 | $id = $_[0]; |
174 | $id = $_[0]; |
174 | }; |
175 | }; |
175 | BDB::flush; |
176 | BDB::flush; |
… | |
… | |
400 | close $FH; |
401 | close $FH; |
401 | } |
402 | } |
402 | |
403 | |
403 | package DC::DB; |
404 | package DC::DB; |
404 | |
405 | |
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406 | sub nuke_db { |
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407 | File::Path::mkpath [$DB_HOME]; |
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408 | eval { File::Path::rmtree $DB_HOME }; |
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409 | } |
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410 | |
405 | sub open_db { |
411 | sub open_db { |
406 | unless (eval { try_open_db }) { |
412 | unless (eval { try_open_db }) { |
407 | warn "$@";#d# |
413 | warn "$@";#d# |
408 | eval { File::Path::rmtree $DB_HOME }; |
414 | eval { nuke_db }; |
409 | try_open_db; |
415 | try_open_db; |
410 | } |
416 | } |
411 | |
417 | |
412 | # fetch the full face table first |
418 | # fetch the full face table first |
413 | unless ($tilemap) { |
419 | unless ($facemap) { |
414 | do_table facemap => sub { |
420 | do_table facemap => sub { |
415 | $tilemap = $_[0]; |
421 | $facemap = $_[0]; |
416 | delete $tilemap->{id}; |
422 | delete $facemap->{id}; |
417 | my %maptile = reverse %$tilemap;#d# |
423 | my %maptile = reverse %$facemap;#d# |
418 | if ((scalar keys %$tilemap) != (scalar keys %maptile)) {#d# |
424 | if ((scalar keys %$facemap) != (scalar keys %maptile)) {#d# |
419 | $tilemap = { };#d# |
425 | $facemap = { };#d# |
420 | DC::error "FATAL: facemap is not a 1:1 mapping, please report this and delete your $DB_HOME directory!\n";#d# |
426 | DC::error "FATAL: facemap is not a 1:1 mapping, please report this and delete your $DB_HOME directory!\n";#d# |
421 | }#d# |
427 | }#d# |
422 | }; |
428 | }; |
423 | } |
429 | } |
424 | |
430 | |
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428 | db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { }; |
434 | db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { }; |
429 | }; |
435 | }; |
430 | } |
436 | } |
431 | |
437 | |
432 | END { |
438 | END { |
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439 | undef $TILE_SEQ; |
433 | %DB_TABLE = (); |
440 | %DB_TABLE = (); |
434 | undef $DB_ENV; |
441 | undef $DB_ENV; |
435 | } |
442 | } |
436 | |
443 | |
437 | 1; |
444 | 1; |