package # Hide from PAUSE
DBIx::Class::Version::Table;
-use base 'DBIx::Class';
+use base 'DBIx::Class::Core';
use strict;
use warnings;
-__PACKAGE__->load_components(qw/ Core/);
__PACKAGE__->table('dbix_class_schema_versions');
__PACKAGE__->add_columns
package # Hide from PAUSE
DBIx::Class::Version::TableCompat;
-use base 'DBIx::Class';
-__PACKAGE__->load_components(qw/ Core/);
+use base 'DBIx::Class::Core';
__PACKAGE__->table('SchemaVersions');
__PACKAGE__->add_columns
use strict;
use warnings;
-use base 'DBIx::Class';
+use base 'DBIx::Class::Schema';
use Carp::Clan qw/^DBIx::Class/;
-use POSIX 'strftime';
+use Time::HiRes qw/gettimeofday/;
__PACKAGE__->mk_classdata('_filedata');
__PACKAGE__->mk_classdata('upgrade_directory');
=cut
sub create_upgrade_path {
+ ## override this method
+}
+
+=head2 ordered_schema_versions
+
+=over 4
+
+=item Returns: a list of version numbers, ordered from lowest to highest
+
+=back
+
+Virtual method that should be overriden to return an ordered list
+of schema versions. This is then used to produce a set of steps to
+upgrade through to achieve the required schema version.
+
+You may want the db_version retrieved via $self->get_db_version
+and the schema_version which is retrieved via $self->schema_version
+
+=cut
+
+sub ordered_schema_versions {
## override this method
}
=head2 upgrade
-Call this to attempt to upgrade your database from the version it is at to the version
-this DBIC schema is at. If they are the same it does nothing.
+Call this to attempt to upgrade your database from the version it
+is at to the version this DBIC schema is at. If they are the same
+it does nothing.
-It requires an SQL diff file to exist in you I<upgrade_directory>, normally you will
-have created this using L<DBIx::Class::Schema/create_ddl_dir>.
+It will call L</ordered_schema_versions> to retrieve an ordered
+list of schema versions (if ordered_schema_versions returns nothing
+then it is assumed you can do the upgrade as a single step). It
+then iterates through the list of versions between the current db
+version and the schema version applying one update at a time until
+all relvant updates are applied.
-If successful the dbix_class_schema_versions table is updated with the current
-DBIC schema version.
+The individual update steps are performed by using
+L</upgrade_single_step>, which will apply the update and also
+update the dbix_class_schema_versions table.
=cut
-sub upgrade
-{
- my ($self) = @_;
- my $db_version = $self->get_db_version();
+sub upgrade {
+ my ($self) = @_;
+ my $db_version = $self->get_db_version();
- # db unversioned
- unless ($db_version) {
- carp 'Upgrade not possible as database is unversioned. Please call install first.';
- return;
- }
+ # db unversioned
+ unless ($db_version) {
+ carp 'Upgrade not possible as database is unversioned. Please call install first.';
+ return;
+ }
+
+ # db and schema at same version. do nothing
+ if ( $db_version eq $self->schema_version ) {
+ carp "Upgrade not necessary\n";
+ return;
+ }
+
+ my @version_list = $self->ordered_schema_versions;
+
+ # if nothing returned then we preload with min/max
+ @version_list = ( $db_version, $self->schema_version )
+ unless ( scalar(@version_list) );
+
+ # catch the case of someone returning an arrayref
+ @version_list = @{ $version_list[0] }
+ if ( ref( $version_list[0] ) eq 'ARRAY' );
+
+ # remove all versions in list above the required version
+ while ( scalar(@version_list)
+ && ( $version_list[-1] ne $self->schema_version ) )
+ {
+ pop @version_list;
+ }
+
+ # remove all versions in list below the current version
+ while ( scalar(@version_list) && ( $version_list[0] ne $db_version ) ) {
+ shift @version_list;
+ }
+
+ # check we have an appropriate list of versions
+ if ( scalar(@version_list) < 2 ) {
+ die;
+ }
+
+ # do sets of upgrade
+ while ( scalar(@version_list) >= 2 ) {
+ $self->upgrade_single_step( $version_list[0], $version_list[1] );
+ shift @version_list;
+ }
+}
+
+=head2 upgrade_single_step
+
+=over 4
+
+=item Arguments: db_version - the version currently within the db
+
+=item Arguments: target_version - the version to upgrade to
+
+=back
+
+Call this to attempt to upgrade your database from the
+I<db_version> to the I<target_version>. If they are the same it
+does nothing.
+
+It requires an SQL diff file to exist in your I<upgrade_directory>,
+normally you will have created this using L<DBIx::Class::Schema/create_ddl_dir>.
+
+If successful the dbix_class_schema_versions table is updated with
+the I<target_version>.
+
+This method may be called repeatedly by the upgrade method to
+upgrade through a series of updates.
+
+=cut
+
+sub upgrade_single_step
+{
+ my ($self,
+ $db_version,
+ $target_version) = @_;
# db and schema at same version. do nothing
- if ($db_version eq $self->schema_version) {
+ if ($db_version eq $target_version) {
carp "Upgrade not necessary\n";
return;
}
my $upgrade_file = $self->ddl_filename(
$self->storage->sqlt_type,
- $self->schema_version,
+ $target_version,
$self->upgrade_directory,
$db_version,
);
return;
}
- carp "\nDB version ($db_version) is lower than the schema version (".$self->schema_version."). Attempting upgrade.\n";
+ carp "DB version ($db_version) is lower than the schema version (".$self->schema_version."). Attempting upgrade.\n";
# backup if necessary then apply upgrade
$self->_filedata($self->_read_sql_file($upgrade_file));
$self->txn_do(sub { $self->do_upgrade() });
# set row in dbix_class_schema_versions table
- $self->_set_db_version;
+ $self->_set_db_version({version => $target_version});
}
=head2 do_upgrade
sub apply_statement {
my ($self, $statement) = @_;
- $self->storage->dbh->do($_) or carp "SQL was:\n $_";
+ $self->storage->dbh->do($_) or carp "SQL was: $_";
}
=head2 get_db_version
return 1;
}
- carp "Versions out of sync. This is " . $self->schema_version .
+ carp "Versions out of sync. This is " . $self->schema_version .
", your database contains version $pversion, please call upgrade on your Schema.\n";
}
my $version = $params->{version} ? $params->{version} : $self->schema_version;
my $vtable = $self->{vschema}->resultset('Table');
- $vtable->create({ version => $version,
- installed => strftime("%Y-%m-%d %H:%M:%S", gmtime())
- });
+ ##############################################################################
+ # !!! NOTE !!!
+ ##############################################################################
+ #
+ # The travesty below replaces the old nice timestamp format of %Y-%m-%d %H:%M:%S
+ # This is necessary since there are legitimate cases when upgrades can happen
+ # back to back within the same second. This breaks things since we relay on the
+ # ability to sort by the 'installed' value. The logical choice of an autoinc
+ # is not possible, as it will break multiple legacy installations. Also it is
+ # not possible to format the string sanely, as the column is a varchar(20).
+ # The 'v' character is added to the front of the string, so that any version
+ # formatted by this new function will sort _after_ any existing 200... strings.
+ my @tm = gettimeofday();
+ my @dt = gmtime ($tm[0]);
+ my $o = $vtable->create({
+ version => $version,
+ installed => sprintf("v%04d%02d%02d_%02d%02d%02d.%03.0f",
+ $dt[5] + 1900,
+ $dt[4] + 1,
+ $dt[3],
+ $dt[2],
+ $dt[1],
+ $dt[0],
+ $tm[1] / 1000, # convert to millisecs, format as up/down rounded int above
+ ),
+ });
}
sub _read_sql_file {
projects / dbsrgits/DBIx-Class.git / blobdiff