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 _build_version_rs {
91 $self->schema->set_us_up_the_bomb;
92 $self->schema->resultset('__VERSION')
95 method backup { $self->storage->backup($self->backup_directory) }
97 method install($new_version) {
98 carp 'Install not possible as versions table already exists in database'
99 if $self->is_installed;
101 $new_version ||= $self->schema_version;
104 $self->schema->deploy;
106 $self->version_rs->create({
107 version => $new_version,
109 # upgrade_sql => $upgrade_sql,
114 method create_upgrade_path { }
116 method ordered_schema_versions { undef }
119 my $db_version = $self->db_version;
120 my $schema_version = $self->schema_version;
122 unless ($db_version) {
124 carp 'Upgrade not possible as database is unversioned. Please call install first.';
128 if ( $db_version eq $schema_version ) {
130 carp "Upgrade not necessary\n";
134 my @version_list = $self->ordered_schema_versions ||
135 ( $db_version, $schema_version );
137 # remove all versions in list above the required version
138 while ( @version_list && ( $version_list[-1] ne $schema_version ) ) {
142 # remove all versions in list below the current version
143 while ( @version_list && ( $version_list[0] ne $db_version ) ) {
147 # check we have an appropriate list of versions
148 die if @version_list < 2;
151 while ( @version_list >= 2 ) {
152 $self->upgrade_single_step( $version_list[0], $version_list[1] );
157 method upgrade_single_step($db_version, $target_version) {
158 if ($db_version eq $target_version) {
160 carp "Upgrade not necessary\n";
164 my $upgrade_file = $self->ddl_filename(
165 $self->storage->sqlt_type,
167 $self->upgrade_directory,
171 $self->create_upgrade_path({ upgrade_file => $upgrade_file });
173 unless (-f $upgrade_file) {
175 carp "Upgrade not possible, no upgrade file found ($upgrade_file), please create one\n";
179 carp "DB version ($db_version) is lower than the schema version (".$self->schema_version."). Attempting upgrade.\n";
181 $self->_filedata($self->_read_sql_file($upgrade_file)); # I don't like this --fREW 2010-02-22
182 $self->backup if $self->do_backup;
183 $self->schema->txn_do(sub { $self->do_upgrade });
185 $self->version_rs->create({
186 version => $target_version,
188 # upgrade_sql => $upgrade_sql,
192 method create_ddl_dir($version, $preversion) {
193 my $schema = $self->schema;
194 my $databases = $self->databases;
195 my $dir = $self->upgrade_directory;
196 my $sqltargs = $self->sqltargs;
198 carp "Upgrade directory $dir does not exist, using ./\n";
202 my $schema_version = $schema->schema_version || '1.x';
203 $version ||= $schema_version;
207 ignore_constraint_names => 1,
208 ignore_index_names => 1,
212 my $sqlt = SQL::Translator->new( $sqltargs );
214 $sqlt->parser('SQL::Translator::Parser::DBIx::Class');
215 my $sqlt_schema = $sqlt->translate({ data => $schema })
216 or $self->throw_exception ($sqlt->error);
218 foreach my $db (@$databases) {
220 $sqlt->{schema} = $sqlt_schema;
221 $sqlt->producer($db);
223 my $filename = $self->ddl_filename($db, $version, $dir);
224 if (-e $filename && ($version eq $schema_version )) {
225 # if we are dumping the current version, overwrite the DDL
226 carp "Overwriting existing DDL file - $filename";
230 my $output = $sqlt->translate;
232 carp("Failed to translate to $db, skipping. (" . $sqlt->error . ")");
236 unless( open $file, q(>), $filename ) {
237 $self->throw_exception("Can't open $filename for writing ($!)");
240 print {$file} $output;
243 next unless $preversion;
245 require SQL::Translator::Diff;
247 my $prefilename = $self->ddl_filename($db, $preversion, $dir);
248 unless(-e $prefilename) {
249 carp("No previous schema file found ($prefilename)");
253 my $diff_file = $self->ddl_filename($db, $version, $dir, $preversion);
255 carp("Overwriting existing diff file - $diff_file");
261 my $t = SQL::Translator->new({
267 $t->parser( $db ) # could this really throw an exception?
268 or $self->throw_exception ($t->error);
270 my $out = $t->translate( $prefilename )
271 or $self->throw_exception ($t->error);
273 $source_schema = $t->schema;
275 $source_schema->name( $prefilename )
276 unless $source_schema->name;
279 # The "new" style of producers have sane normalization and can support
280 # diffing a SQL file against a DBIC->SQLT schema. Old style ones don't
281 # And we have to diff parsed SQL against parsed SQL.
282 my $dest_schema = $sqlt_schema;
284 unless ( "SQL::Translator::Producer::$db"->can('preprocess_schema') ) {
285 my $t = SQL::Translator->new({
291 $t->parser( $db ) # could this really throw an exception?
292 or $self->throw_exception ($t->error);
294 my $out = $t->translate( $filename )
295 or $self->throw_exception ($t->error);
297 $dest_schema = $t->schema;
299 $dest_schema->name( $filename )
300 unless $dest_schema->name;
303 my $diff = SQL::Translator::Diff::schema_diff(
308 unless(open $file, q(>), $diff_file) {
309 $self->throw_exception("Can't write to $diff_file ($!)");
317 method do_upgrade { $self->run_upgrade(qr/.*?/) }
319 method run_upgrade($stm) {
320 return unless $self->_filedata;
321 my @statements = grep { $_ =~ $stm } @{$self->_filedata};
324 $self->storage->debugobj->query_start($_) if $self->storage->debug;
325 $self->apply_statement($_);
326 $self->storage->debugobj->query_end($_) if $self->storage->debug;
330 method apply_statement($statement) {
332 $self->storage->dbh->do($_) or carp "SQL was: $_"
335 method _read_sql_file($file) {
338 open my $fh, '<', $file or carp("Can't open upgrade file, $file ($!)");
339 my @data = split /\n/, join '', <$fh>;
345 !/^(BEGIN|BEGIN TRANSACTION|COMMIT)/m
356 vim: ts=2,sw=2,expandtab