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';
12 use Moose::Util::TypeConstraints;
13 subtype 'DBIx::Class::DeploymentHandler::Databases'
14 => as 'ArrayRef[Str]';
16 coerce 'DBIx::Class::DeploymentHandler::Databases'
19 no Moose::Util::TypeConstraints;
23 isa => 'DBIx::Class::Schema',
26 handles => [qw( ddl_filename schema_version )],
29 has upgrade_directory => (
36 has backup_directory => (
42 isa => 'DBIx::Class::Storage',
47 method _build_storage {
48 my $s = $self->schema->storage;
49 $s->_determine_driver;
54 isa => 'ArrayRef[Str]',
64 has do_diff_on_init => (
71 isa => 'DBIx::Class::ResultSet',
74 handles => [qw( is_installed db_version )],
79 isa => 'DBIx::Class::DeploymentHandler::Databases',
81 default => sub { [qw( MySQL SQLite PostgreSQL )] },
87 default => sub { {} },
90 method deployment_statements {
91 my $dir = $self->upgrade_directory;
92 my $schema = $self->schema;
93 my $type = $self->storage->sqlt_type;
94 my $sqltargs = $self->sqltargs;
95 my $version = $schema->schema_version || '1.x';
97 my $filename = $schema->ddl_filename($type, $version, $dir);
101 open($file, "<$filename")
102 or $self->throw_exception("Can't open $filename ($!)");
105 return join('', @rows);
108 # sources needs to be a parser arg, but for simplicty allow at top level
110 $sqltargs->{parser_args}{sources} = delete $sqltargs->{sources}
111 if exists $sqltargs->{sources};
113 my $tr = SQL::Translator->new(
114 producer => "SQL::Translator::Producer::${type}",
116 parser => 'SQL::Translator::Parser::DBIx::Class',
123 @ret = $tr->translate;
126 $ret[0] = $tr->translate;
129 $schema->throw_exception( 'Unable to produce deployment statements: ' . $tr->error)
130 unless (@ret && defined $ret[0]);
132 return $wa ? @ret : $ret[0];
136 my $schema = $self->schema;
138 my $sqltargs = $self->sqltargs;
139 my $dir = $self->upgrade_directory;
140 my $storage = $self->storage;
144 return if($line =~ /^--/);
146 # next if($line =~ /^DROP/m);
147 return if($line =~ /^BEGIN TRANSACTION/m);
148 return if($line =~ /^COMMIT/m);
149 return if $line =~ /^\s+$/; # skip whitespace only
150 $storage->_query_start($line);
152 # do a dbh_do cycle here, as we need some error checking in
153 # place (even though we will ignore errors)
154 $storage->dbh_do (sub { $_[1]->do($line) });
157 carp "$@ (running '${line}')"
159 $storage->_query_end($line);
161 my @statements = $self->deployment_statements($schema, $type, undef, $dir, { %{ $sqltargs || {} }, no_comments => 1 } );
162 if (@statements > 1) {
163 foreach my $statement (@statements) {
164 $deploy->( $statement );
167 elsif (@statements == 1) {
168 foreach my $line ( split(";\n", $statements[0])) {
174 method _build_version_rs {
175 $self->schema->set_us_up_the_bomb;
176 $self->schema->resultset('__VERSION')
179 method backup { $self->storage->backup($self->backup_directory) }
181 method install($new_version) {
182 carp 'Install not possible as versions table already exists in database'
183 if $self->is_installed;
185 $new_version ||= $self->schema_version;
190 $self->version_rs->create({
191 version => $new_version,
193 # upgrade_sql => $upgrade_sql,
198 method create_upgrade_path { }
200 method ordered_schema_versions { undef }
203 my $db_version = $self->db_version;
204 my $schema_version = $self->schema_version;
206 unless ($db_version) {
208 carp 'Upgrade not possible as database is unversioned. Please call install first.';
212 if ( $db_version eq $schema_version ) {
214 carp "Upgrade not necessary\n";
218 my @version_list = $self->ordered_schema_versions ||
219 ( $db_version, $schema_version );
221 # remove all versions in list above the required version
222 while ( @version_list && ( $version_list[-1] ne $schema_version ) ) {
226 # remove all versions in list below the current version
227 while ( @version_list && ( $version_list[0] ne $db_version ) ) {
231 # check we have an appropriate list of versions
232 die if @version_list < 2;
235 while ( @version_list >= 2 ) {
236 $self->upgrade_single_step( $version_list[0], $version_list[1] );
241 method upgrade_single_step($db_version, $target_version) {
242 if ($db_version eq $target_version) {
244 carp "Upgrade not necessary\n";
248 my $upgrade_file = $self->ddl_filename(
249 $self->storage->sqlt_type,
251 $self->upgrade_directory,
255 $self->create_upgrade_path({ upgrade_file => $upgrade_file });
257 unless (-f $upgrade_file) {
259 carp "Upgrade not possible, no upgrade file found ($upgrade_file), please create one\n";
263 carp "DB version ($db_version) is lower than the schema version (".$self->schema_version."). Attempting upgrade.\n";
265 $self->_filedata($self->_read_sql_file($upgrade_file)); # I don't like this --fREW 2010-02-22
266 $self->backup if $self->do_backup;
267 $self->schema->txn_do(sub { $self->do_upgrade });
269 $self->version_rs->create({
270 version => $target_version,
272 # upgrade_sql => $upgrade_sql,
276 method create_ddl_dir($version, $preversion) {
277 my $schema = $self->schema;
278 my $databases = $self->databases;
279 my $dir = $self->upgrade_directory;
280 my $sqltargs = $self->sqltargs;
282 carp "Upgrade directory $dir does not exist, using ./\n";
286 my $schema_version = $schema->schema_version || '1.x';
287 $version ||= $schema_version;
291 ignore_constraint_names => 1,
292 ignore_index_names => 1,
296 my $sqlt = SQL::Translator->new( $sqltargs );
298 $sqlt->parser('SQL::Translator::Parser::DBIx::Class');
299 my $sqlt_schema = $sqlt->translate({ data => $schema })
300 or $self->throw_exception ($sqlt->error);
302 foreach my $db (@$databases) {
304 $sqlt->{schema} = $sqlt_schema;
305 $sqlt->producer($db);
307 my $filename = $self->ddl_filename($db, $version, $dir);
308 if (-e $filename && ($version eq $schema_version )) {
309 # if we are dumping the current version, overwrite the DDL
310 carp "Overwriting existing DDL file - $filename";
314 my $output = $sqlt->translate;
316 carp("Failed to translate to $db, skipping. (" . $sqlt->error . ")");
320 unless( open $file, q(>), $filename ) {
321 $self->throw_exception("Can't open $filename for writing ($!)");
324 print {$file} $output;
327 next unless $preversion;
329 require SQL::Translator::Diff;
331 my $prefilename = $self->ddl_filename($db, $preversion, $dir);
332 unless(-e $prefilename) {
333 carp("No previous schema file found ($prefilename)");
337 my $diff_file = $self->ddl_filename($db, $version, $dir, $preversion);
339 carp("Overwriting existing diff file - $diff_file");
345 my $t = SQL::Translator->new({
351 $t->parser( $db ) # could this really throw an exception?
352 or $self->throw_exception ($t->error);
354 my $out = $t->translate( $prefilename )
355 or $self->throw_exception ($t->error);
357 $source_schema = $t->schema;
359 $source_schema->name( $prefilename )
360 unless $source_schema->name;
363 # The "new" style of producers have sane normalization and can support
364 # diffing a SQL file against a DBIC->SQLT schema. Old style ones don't
365 # And we have to diff parsed SQL against parsed SQL.
366 my $dest_schema = $sqlt_schema;
368 unless ( "SQL::Translator::Producer::$db"->can('preprocess_schema') ) {
369 my $t = SQL::Translator->new({
375 $t->parser( $db ) # could this really throw an exception?
376 or $self->throw_exception ($t->error);
378 my $out = $t->translate( $filename )
379 or $self->throw_exception ($t->error);
381 $dest_schema = $t->schema;
383 $dest_schema->name( $filename )
384 unless $dest_schema->name;
387 my $diff = SQL::Translator::Diff::schema_diff(
392 unless(open $file, q(>), $diff_file) {
393 $self->throw_exception("Can't write to $diff_file ($!)");
401 method do_upgrade { $self->run_upgrade(qr/.*?/) }
403 method run_upgrade($stm) {
404 return unless $self->_filedata;
405 my @statements = grep { $_ =~ $stm } @{$self->_filedata};
408 $self->storage->debugobj->query_start($_) if $self->storage->debug;
409 $self->apply_statement($_);
410 $self->storage->debugobj->query_end($_) if $self->storage->debug;
414 method apply_statement($statement) {
416 $self->storage->dbh->do($_) or carp "SQL was: $_"
419 method _read_sql_file($file) {
422 open my $fh, '<', $file or carp("Can't open upgrade file, $file ($!)");
423 my @data = split /\n/, join '', <$fh>;
429 !/^(BEGIN|BEGIN TRANSACTION|COMMIT)/m
440 vim: ts=2,sw=2,expandtab