1 package DBIx::Class::DeploymentHandler;
4 use Method::Signatures::Simple;
5 require DBIx::Class::Schema; # loaded for type constraint
6 require DBIx::Class::Storage; # loaded for type constraint
7 require DBIx::Class::ResultSet; # loaded for type constraint
8 use Carp::Clan '^DBIx::Class::DeploymentHandler';
10 require SQL::Translator::Diff;
14 use Moose::Util::TypeConstraints;
15 subtype 'DBIx::Class::DeploymentHandler::Databases'
16 => as 'ArrayRef[Str]';
18 coerce 'DBIx::Class::DeploymentHandler::Databases'
21 no Moose::Util::TypeConstraints;
25 isa => 'DBIx::Class::Schema',
28 handles => [qw( ddl_filename schema_version )],
31 has upgrade_directory => (
38 has backup_directory => (
44 isa => 'DBIx::Class::Storage',
49 method _build_storage {
50 my $s = $self->schema->storage;
51 $s->_determine_driver;
56 isa => 'ArrayRef[Str]',
66 has do_diff_on_init => (
73 isa => 'DBIx::Class::ResultSet',
76 handles => [qw( is_installed db_version )],
79 method _build_version_rs {
80 $self->schema->set_us_up_the_bomb;
81 $self->schema->resultset('__VERSION')
86 isa => 'DBIx::Class::DeploymentHandler::Databases',
88 default => sub { [qw( MySQL SQLite PostgreSQL )] },
94 default => sub { {} },
97 method deployment_statements {
98 my $dir = $self->upgrade_directory;
99 my $schema = $self->schema;
100 my $type = $self->storage->sqlt_type;
101 my $sqltargs = $self->sqltargs;
102 my $version = $self->schema_version || '1.x';
104 my $filename = $self->ddl_filename($type, $version, $dir);
107 open $file, q(<), $filename
108 or carp "Can't open $filename ($!)";
111 return join '', @rows;
114 # sources needs to be a parser arg, but for simplicty allow at top level
116 $sqltargs->{parser_args}{sources} = delete $sqltargs->{sources}
117 if exists $sqltargs->{sources};
119 my $tr = SQL::Translator->new(
120 producer => "SQL::Translator::Producer::${type}",
122 parser => 'SQL::Translator::Parser::DBIx::Class',
129 @ret = $tr->translate;
132 $ret[0] = $tr->translate;
135 $schema->throw_exception( 'Unable to produce deployment statements: ' . $tr->error)
136 unless (@ret && defined $ret[0]);
138 return $wa ? @ret : $ret[0];
142 my $schema = $self->schema;
144 my $sqltargs = $self->sqltargs;
145 my $dir = $self->upgrade_directory;
146 my $storage = $self->storage;
150 return if(!$line || $line =~ /^--|^BEGIN TRANSACTION|^COMMIT|^\s+$/);
151 $storage->_query_start($line);
153 # do a dbh_do cycle here, as we need some error checking in
154 # place (even though we will ignore errors)
155 $storage->dbh_do (sub { $_[1]->do($line) });
158 carp "$_ (running '${line}')"
160 $storage->_query_end($line);
162 my @statements = $self->deployment_statements();
163 if (@statements > 1) {
164 foreach my $statement (@statements) {
165 $deploy->( $statement );
168 elsif (@statements == 1) {
169 foreach my $line ( split(";\n", $statements[0])) {
175 method backup { $self->storage->backup($self->backup_directory) }
177 method install($new_version) {
178 carp 'Install not possible as versions table already exists in database'
179 if $self->is_installed;
181 $new_version ||= $self->schema_version;
186 $self->version_rs->create({
187 version => $new_version,
189 # upgrade_sql => $upgrade_sql,
194 method create_upgrade_path { }
196 method ordered_schema_versions { undef }
199 my $db_version = $self->db_version;
200 my $schema_version = $self->schema_version;
202 unless ($db_version) {
204 carp 'Upgrade not possible as database is unversioned. Please call install first.';
208 if ( $db_version eq $schema_version ) {
210 carp "Upgrade not necessary\n";
214 my @version_list = $self->ordered_schema_versions ||
215 ( $db_version, $schema_version );
217 # remove all versions in list above the required version
218 while ( @version_list && ( $version_list[-1] ne $schema_version ) ) {
222 # remove all versions in list below the current version
223 while ( @version_list && ( $version_list[0] ne $db_version ) ) {
227 # check we have an appropriate list of versions
228 die if @version_list < 2;
231 while ( @version_list >= 2 ) {
232 $self->upgrade_single_step( $version_list[0], $version_list[1] );
237 method upgrade_single_step($db_version, $target_version) {
238 if ($db_version eq $target_version) {
240 carp "Upgrade not necessary\n";
244 my $upgrade_file = $self->ddl_filename(
245 $self->storage->sqlt_type,
247 $self->upgrade_directory,
251 $self->create_upgrade_path({ upgrade_file => $upgrade_file });
253 unless (-f $upgrade_file) {
255 carp "Upgrade not possible, no upgrade file found ($upgrade_file), please create one\n";
259 carp "DB version ($db_version) is lower than the schema version (".$self->schema_version."). Attempting upgrade.\n";
261 $self->_filedata($self->_read_sql_file($upgrade_file)); # I don't like this --fREW 2010-02-22
262 $self->backup if $self->do_backup;
263 $self->schema->txn_do(sub { $self->do_upgrade });
265 $self->version_rs->create({
266 version => $target_version,
268 # upgrade_sql => $upgrade_sql,
272 method create_install_ddl {
273 my $schema = $self->schema;
274 my $databases = $self->databases;
275 my $dir = $self->upgrade_directory;
276 my $sqltargs = $self->sqltargs;
278 carp "Upgrade directory $dir does not exist, using ./\n";
282 my $version = $schema->schema_version || '1.x';
283 my $schema_version = $schema->schema_version || '1.x';
284 $version ||= $schema_version;
288 ignore_constraint_names => 1,
289 ignore_index_names => 1,
293 my $sqlt = SQL::Translator->new( $sqltargs );
295 $sqlt->parser('SQL::Translator::Parser::DBIx::Class');
296 my $sqlt_schema = $sqlt->translate({ data => $schema })
297 or $self->throw_exception ($sqlt->error);
299 foreach my $db (@$databases) {
301 $sqlt->{schema} = $sqlt_schema;
302 $sqlt->producer($db);
304 my $filename = $self->ddl_filename($db, $version, $dir);
305 if (-e $filename && ($version eq $schema_version )) {
306 # if we are dumping the current version, overwrite the DDL
307 carp "Overwriting existing DDL file - $filename";
311 my $output = $sqlt->translate;
313 carp("Failed to translate to $db, skipping. (" . $sqlt->error . ")");
317 unless( open $file, q(>), $filename ) {
318 $self->throw_exception("Can't open $filename for writing ($!)");
321 print {$file} $output;
326 method create_update_ddl($version, $preversion) {
327 my $schema = $self->schema;
328 my $databases = $self->databases;
329 my $dir = $self->upgrade_directory;
330 my $sqltargs = $self->sqltargs;
333 carp "Upgrade directory $dir does not exist, using ./\n";
337 my $schema_version = $schema->schema_version || '1.x';
338 $version ||= $schema_version;
342 ignore_constraint_names => 1,
343 ignore_index_names => 1,
347 my $sqlt = SQL::Translator->new( $sqltargs );
349 $sqlt->parser('SQL::Translator::Parser::DBIx::Class');
350 my $sqlt_schema = $sqlt->translate({ data => $schema })
351 or $self->throw_exception ($sqlt->error);
353 foreach my $db (@$databases) {
355 $sqlt->{schema} = $sqlt_schema;
356 $sqlt->producer($db);
358 my $prefilename = $self->ddl_filename($db, $preversion, $dir);
359 unless(-e $prefilename) {
360 carp("No previous schema file found ($prefilename)");
364 my $diff_file = $self->ddl_filename($db, $version, $dir, $preversion);
366 carp("Overwriting existing diff file - $diff_file");
372 my $t = SQL::Translator->new({
378 $t->parser( $db ) # could this really throw an exception?
379 or $self->throw_exception ($t->error);
381 my $out = $t->translate( $prefilename )
382 or $self->throw_exception ($t->error);
384 $source_schema = $t->schema;
386 $source_schema->name( $prefilename )
387 unless $source_schema->name;
390 # The "new" style of producers have sane normalization and can support
391 # diffing a SQL file against a DBIC->SQLT schema. Old style ones don't
392 # And we have to diff parsed SQL against parsed SQL.
393 my $dest_schema = $sqlt_schema;
395 unless ( "SQL::Translator::Producer::$db"->can('preprocess_schema') ) {
396 my $t = SQL::Translator->new({
402 $t->parser( $db ) # could this really throw an exception?
403 or $self->throw_exception ($t->error);
405 my $filename = $self->ddl_filename($db, $version, $dir);
406 my $out = $t->translate( $filename )
407 or $self->throw_exception ($t->error);
409 $dest_schema = $t->schema;
411 $dest_schema->name( $filename )
412 unless $dest_schema->name;
415 my $diff = SQL::Translator::Diff::schema_diff(
421 unless(open $file, q(>), $diff_file) {
422 $self->throw_exception("Can't write to $diff_file ($!)");
430 method create_ddl_dir($version, $preversion) {
431 $self->create_install_ddl;
432 $self->create_update_ddl($version, $preversion) if $preversion;
435 method do_upgrade { $self->run_upgrade(qr/.*?/) }
437 method run_upgrade($stm) {
438 return unless $self->_filedata;
439 my @statements = grep { $_ =~ $stm } @{$self->_filedata};
442 $self->storage->debugobj->query_start($_) if $self->storage->debug;
443 $self->apply_statement($_);
444 $self->storage->debugobj->query_end($_) if $self->storage->debug;
448 method apply_statement($statement) {
450 $self->storage->dbh->do($_) or carp "SQL was: $_"
453 method _read_sql_file($file) {
456 open my $fh, '<', $file or carp("Can't open upgrade file, $file ($!)");
457 my @data = split /\n/, join '', <$fh>;
463 !/^(BEGIN|BEGIN TRANSACTION|COMMIT)/m
474 vim: ts=2,sw=2,expandtab