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;
13 with 'DBIx::Class::DeploymentHandler::SqltDeployMethod';
16 use Moose::Util::TypeConstraints;
17 subtype 'DBIx::Class::DeploymentHandler::Databases'
18 => as 'ArrayRef[Str]';
20 coerce 'DBIx::Class::DeploymentHandler::Databases'
23 no Moose::Util::TypeConstraints;
27 isa => 'DBIx::Class::Schema',
30 handles => [qw( ddl_filename schema_version )],
33 has upgrade_directory => (
40 has backup_directory => (
46 isa => 'DBIx::Class::Storage',
51 method _build_storage {
52 my $s = $self->schema->storage;
53 $s->_determine_driver;
58 isa => 'ArrayRef[Str]',
68 has do_diff_on_init => (
75 isa => 'DBIx::Class::ResultSet',
78 handles => [qw( is_installed db_version )],
81 method _build_version_rs {
82 $self->schema->set_us_up_the_bomb;
83 $self->schema->resultset('__VERSION')
88 isa => 'DBIx::Class::DeploymentHandler::Databases',
90 default => sub { [qw( MySQL SQLite PostgreSQL )] },
96 default => sub { {} },
100 my $schema = $self->schema;
102 my $sqltargs = $self->sqltargs;
103 my $dir = $self->upgrade_directory;
104 my $storage = $self->storage;
108 return if(!$line || $line =~ /^--|^BEGIN TRANSACTION|^COMMIT|^\s+$/);
109 $storage->_query_start($line);
111 # do a dbh_do cycle here, as we need some error checking in
112 # place (even though we will ignore errors)
113 $storage->dbh_do (sub { $_[1]->do($line) });
116 carp "$_ (running '${line}')"
118 $storage->_query_end($line);
120 my @statements = $self->deployment_statements();
121 if (@statements > 1) {
122 foreach my $statement (@statements) {
123 $deploy->( $statement );
126 elsif (@statements == 1) {
127 foreach my $line ( split(";\n", $statements[0])) {
133 method backup { $self->storage->backup($self->backup_directory) }
135 method install($new_version) {
136 carp 'Install not possible as versions table already exists in database'
137 if $self->is_installed;
139 $new_version ||= $self->schema_version;
144 $self->version_rs->create({
145 version => $new_version,
147 # upgrade_sql => $upgrade_sql,
152 method create_upgrade_path { }
154 method ordered_schema_versions { undef }
157 my $db_version = $self->db_version;
158 my $schema_version = $self->schema_version;
160 unless ($db_version) {
162 carp 'Upgrade not possible as database is unversioned. Please call install first.';
166 if ( $db_version eq $schema_version ) {
168 carp "Upgrade not necessary\n";
172 my @version_list = $self->ordered_schema_versions ||
173 ( $db_version, $schema_version );
175 # remove all versions in list above the required version
176 while ( @version_list && ( $version_list[-1] ne $schema_version ) ) {
180 # remove all versions in list below the current version
181 while ( @version_list && ( $version_list[0] ne $db_version ) ) {
185 # check we have an appropriate list of versions
186 die if @version_list < 2;
189 while ( @version_list >= 2 ) {
190 $self->upgrade_single_step( $version_list[0], $version_list[1] );
195 method upgrade_single_step($db_version, $target_version) {
196 if ($db_version eq $target_version) {
198 carp "Upgrade not necessary\n";
202 my $upgrade_file = $self->ddl_filename(
203 $self->storage->sqlt_type,
205 $self->upgrade_directory,
209 $self->create_upgrade_path({ upgrade_file => $upgrade_file });
211 unless (-f $upgrade_file) {
213 carp "Upgrade not possible, no upgrade file found ($upgrade_file), please create one\n";
217 carp "DB version ($db_version) is lower than the schema version (".$self->schema_version."). Attempting upgrade.\n";
219 $self->_filedata($self->_read_sql_file($upgrade_file)); # I don't like this --fREW 2010-02-22
220 $self->backup if $self->do_backup;
221 $self->schema->txn_do(sub { $self->do_upgrade });
223 $self->version_rs->create({
224 version => $target_version,
226 # upgrade_sql => $upgrade_sql,
230 method do_upgrade { $self->run_upgrade(qr/.*?/) }
232 method run_upgrade($stm) {
233 return unless $self->_filedata;
234 my @statements = grep { $_ =~ $stm } @{$self->_filedata};
237 $self->storage->debugobj->query_start($_) if $self->storage->debug;
238 $self->apply_statement($_);
239 $self->storage->debugobj->query_end($_) if $self->storage->debug;
243 method apply_statement($statement) {
245 $self->storage->dbh->do($_) or carp "SQL was: $_"
248 method _read_sql_file($file) {
251 open my $fh, '<', $file or carp("Can't open upgrade file, $file ($!)");
252 my @data = split /\n/, join '', <$fh>;
258 !/^(BEGIN|BEGIN TRANSACTION|COMMIT)/m
265 __PACKAGE__->meta->make_immutable;
271 vim: ts=2,sw=2,expandtab