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';
11 isa => 'DBIx::Class::Schema',
14 handles => [qw( ddl_filename schema_version )],
17 has upgrade_directory => (
24 has backup_directory => (
30 isa => 'DBIx::Class::Storage',
35 method _build_storage {
36 my $s = $self->schema->storage;
37 $s->_determine_driver;
42 isa => 'ArrayRef[Str]',
52 has do_diff_on_init => (
59 isa => 'DBIx::Class::ResultSet',
62 handles => [qw( is_installed db_version )],
66 # make this coerce from Str
67 isa => 'ArrayRef[Str]',
69 default => sub { [qw( MySQL SQLite PostgreSQL )] },
72 method _build_version_rs {
73 $self->schema->set_us_up_the_bomb;
74 $self->schema->resultset('__VERSION')
77 method backup { $self->storage->backup($self->backup_directory) }
79 method install($new_version) {
80 carp 'Install not possible as versions table already exists in database'
81 if $self->is_installed;
83 $new_version ||= $self->schema_version;
86 $self->schema->deploy;
88 $self->version_rs->create({
89 version => $new_version,
91 # upgrade_sql => $upgrade_sql,
96 method create_upgrade_path { }
98 method ordered_schema_versions { undef }
101 my $db_version = $self->db_version;
102 my $schema_version = $self->schema_version;
104 unless ($db_version) {
106 carp 'Upgrade not possible as database is unversioned. Please call install first.';
110 if ( $db_version eq $schema_version ) {
112 carp "Upgrade not necessary\n";
116 my @version_list = $self->ordered_schema_versions ||
117 ( $db_version, $schema_version );
119 # remove all versions in list above the required version
120 while ( @version_list && ( $version_list[-1] ne $schema_version ) ) {
124 # remove all versions in list below the current version
125 while ( @version_list && ( $version_list[0] ne $db_version ) ) {
129 # check we have an appropriate list of versions
130 die if @version_list < 2;
133 while ( @version_list >= 2 ) {
134 $self->upgrade_single_step( $version_list[0], $version_list[1] );
139 method upgrade_single_step($db_version, $target_version) {
140 if ($db_version eq $target_version) {
142 carp "Upgrade not necessary\n";
146 my $upgrade_file = $self->ddl_filename(
147 $self->storage->sqlt_type,
149 $self->upgrade_directory,
153 $self->create_upgrade_path({ upgrade_file => $upgrade_file });
155 unless (-f $upgrade_file) {
157 carp "Upgrade not possible, no upgrade file found ($upgrade_file), please create one\n";
161 carp "DB version ($db_version) is lower than the schema version (".$self->schema_version."). Attempting upgrade.\n";
163 $self->_filedata($self->_read_sql_file($upgrade_file)); # I don't like this --fREW 2010-02-22
164 $self->backup if $self->do_backup;
165 $self->schema->txn_do(sub { $self->do_upgrade });
167 $self->version_rs->create({
168 version => $target_version,
170 # upgrade_sql => $upgrade_sql,
174 method create_ddl_dir($version, $preversion, $sqltargs) {
175 my $schema = $self->schema;
176 my $databases = $self->databases;
177 my $dir = $self->upgrade_directory;
179 carp "Upgrade directory $dir does not exist, using ./\n";
183 my $schema_version = $schema->schema_version || '1.x';
184 $version ||= $schema_version;
188 ignore_constraint_names => 1,
189 ignore_index_names => 1,
193 unless (DBIx::Class::Optional::Dependencies->req_ok_for ('deploy')) {
194 $self->throw_exception("Can't create a ddl file without " . DBIx::Class::Optional::Dependencies->req_missing_for ('deploy') );
197 my $sqlt = SQL::Translator->new( $sqltargs );
199 $sqlt->parser('SQL::Translator::Parser::DBIx::Class');
200 my $sqlt_schema = $sqlt->translate({ data => $schema })
201 or $self->throw_exception ($sqlt->error);
203 foreach my $db (@$databases) {
205 $sqlt->{schema} = $sqlt_schema;
206 $sqlt->producer($db);
209 my $filename = $schema->ddl_filename($db, $version, $dir);
210 if (-e $filename && ($version eq $schema_version )) {
211 # if we are dumping the current version, overwrite the DDL
212 carp "Overwriting existing DDL file - $filename";
216 my $output = $sqlt->translate;
218 carp("Failed to translate to $db, skipping. (" . $sqlt->error . ")");
221 if(!open($file, ">$filename")) {
222 $self->throw_exception("Can't open $filename for writing ($!)");
228 next unless ($preversion);
230 require SQL::Translator::Diff;
232 my $prefilename = $schema->ddl_filename($db, $preversion, $dir);
233 if(!-e $prefilename) {
234 carp("No previous schema file found ($prefilename)");
238 my $difffile = $schema->ddl_filename($db, $version, $dir, $preversion);
240 carp("Overwriting existing diff file - $difffile");
246 my $t = SQL::Translator->new($sqltargs);
251 or $self->throw_exception ($t->error);
253 my $out = $t->translate( $prefilename )
254 or $self->throw_exception ($t->error);
256 $source_schema = $t->schema;
258 $source_schema->name( $prefilename )
259 unless ( $source_schema->name );
262 # The "new" style of producers have sane normalization and can support
263 # diffing a SQL file against a DBIC->SQLT schema. Old style ones don't
264 # And we have to diff parsed SQL against parsed SQL.
265 my $dest_schema = $sqlt_schema;
267 unless ( "SQL::Translator::Producer::$db"->can('preprocess_schema') ) {
268 my $t = SQL::Translator->new($sqltargs);
273 or $self->throw_exception ($t->error);
275 my $out = $t->translate( $filename )
276 or $self->throw_exception ($t->error);
278 $dest_schema = $t->schema;
280 $dest_schema->name( $filename )
281 unless $dest_schema->name;
284 my $diff = SQL::Translator::Diff::schema_diff($source_schema, $db,
288 if(!open $file, ">$difffile") {
289 $self->throw_exception("Can't write to $difffile ($!)");
297 method do_upgrade { $self->run_upgrade(qr/.*?/) }
299 method run_upgrade($stm) {
300 return unless $self->_filedata;
301 my @statements = grep { $_ =~ $stm } @{$self->_filedata};
304 $self->storage->debugobj->query_start($_) if $self->storage->debug;
305 $self->apply_statement($_);
306 $self->storage->debugobj->query_end($_) if $self->storage->debug;
310 method apply_statement($statement) {
312 $self->storage->dbh->do($_) or carp "SQL was: $_"
315 method _read_sql_file($file) {
318 open my $fh, '<', $file or carp("Can't open upgrade file, $file ($!)");
319 my @data = split /\n/, join '', <$fh>;
325 !/^(BEGIN|BEGIN TRANSACTION|COMMIT)/m
336 vim: ts=2,sw=2,expandtab