X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FDeploymentHandler.pm;h=c22b6ab3df6cbcc17b527de6df84659e0d32fdcc;hb=e217d19c58c8beba917e751dd1089281fa1a74ee;hp=0b176bde1ea4050623179c9abbc0ab3883bb0a59;hpb=7eec7eb7f143f2af5f24558da106d5098a58f116;p=dbsrgits%2FDBIx-Class-DeploymentHandler.git

diff --git a/lib/DBIx/Class/DeploymentHandler.pm b/lib/DBIx/Class/DeploymentHandler.pm
index 0b176bd..c22b6ab 100644
--- a/lib/DBIx/Class/DeploymentHandler.pm
+++ b/lib/DBIx/Class/DeploymentHandler.pm
@@ -3,263 +3,104 @@ package DBIx::Class::DeploymentHandler;
 use Moose;
 use Method::Signatures::Simple;
 require DBIx::Class::Schema;    # loaded for type constraint
-require DBIx::Class::Storage;   # loaded for type constraint
 require DBIx::Class::ResultSet; # loaded for type constraint
-use Carp 'carp';
+use Carp::Clan '^DBIx::Class::DeploymentHandler';
+
+with 'DBIx::Class::DeploymentHandler::WithSqltDeployMethod';
+with 'DBIx::Class::DeploymentHandler::WithDatabaseToSchemaVersions';
+
+BEGIN {
+  use Moose::Util::TypeConstraints;
+  subtype 'DBIx::Class::DeploymentHandler::Databases'
+    => as 'ArrayRef[Str]';
+
+  coerce 'DBIx::Class::DeploymentHandler::Databases'
+    => from 'Str'
+    => via { [$_] };
+  no Moose::Util::TypeConstraints;
+}
 
 has schema => (
-   isa      => 'DBIx::Class::Schema',
-   is       => 'ro',
-   required => 1,
-   handles => [qw{schema_version}],
+  isa      => 'DBIx::Class::Schema',
+  is       => 'ro',
+  required => 1,
 );
 
-has upgrade_directory => (
-   isa      => 'Str',
-   is       => 'ro',
-   required => 1,
-   default  => 'sql',
+has upgrade_directory => ( # configuration
+  isa      => 'Str',
+  is       => 'ro',
+  required => 1,
+  default  => 'sql',
 );
 
-has backup_directory => (
-   isa => 'Str',
-   is  => 'ro',
+has backup_directory => ( # configuration
+  isa => 'Str',
+  is  => 'ro',
+  predicate  => 'has_backup_directory',
 );
 
-has storage => (
-   isa        => 'DBIx::Class::Storage',
-   is         => 'ro',
-   lazy_build => 1,
+has do_backup => ( # configuration
+  isa     => 'Bool',
+  is      => 'ro',
+  default => undef,
 );
 
-method _build_storage {
-   my $s = $self->schema->storage;
-   $s->_determine_driver;
-   $s
-}
-
-has _filedata => (
-   isa => 'Str',
-   is  => 'rw',
+has version_rs => (
+  isa        => 'DBIx::Class::ResultSet',
+  is         => 'ro',
+  lazy_build => 1, # builder comes from another role...
+                   # which is... probably not how we want it
+  handles    => [qw( is_installed )],
 );
 
-has do_backup => (
-   isa     => 'Bool',
-   is      => 'ro',
-   default => undef,
+has to_version => ( # configuration
+  is         => 'ro',
+  lazy_build => 1, # builder comes from another role...
+                   # which is... probably not how we want it
 );
 
-has do_diff_on_init => (
-   isa     => 'Bool',
-   is      => 'ro',
-   default => undef,
+has databases => ( # configuration
+  coerce  => 1,
+  isa     => 'DBIx::Class::DeploymentHandler::Databases',
+  is      => 'ro',
+  default => sub { [qw( MySQL SQLite PostgreSQL )] },
 );
 
-has version_rs => (
-   isa        => 'DBIx::Class::ResultSet',
-   is         => 'ro',
-   lazy_build => 1,
-   handles    => [qw( is_installed db_version )],
+has sqltargs => ( # configuration
+  isa => 'HashRef',
+  is  => 'ro',
+  default => sub { {} },
 );
 
-method _build_version_rs { $self->schema->resultset('VersionResult') }
-
-method backup { $self->storage->backup($self->backup_directory) }
-
-method install($new_version) {
+method install {
   carp 'Install not possible as versions table already exists in database'
-    unless $self->is_installed;
+    if $self->is_installed;
 
-  $new_version ||= $self->schema_version;
+  my $new_version = $self->to_version;
 
   if ($new_version) {
-    $self->schema->deploy;
+    $self->_deploy;
 
     $self->version_rs->create({
-       version     => $new_version,
-       # ddl         => $ddl,
-       # upgrade_sql => $upgrade_sql,
+      version     => $new_version,
+      # ddl         => $ddl,
+      # upgrade_sql => $upgrade_sql,
     });
   }
 }
 
-method create_upgrade_path { }
-
-method ordered_schema_versions { }
-
-method upgrade {
-  my $db_version     = $self->db_version;
-  my $schema_version = $self->schema_version;
-
-  unless ($db_version) {
-      carp 'Upgrade not possible as database is unversioned. Please call install first.';
-      return;
-  }
-
-  if ( $db_version eq $schema_version ) {
-      carp "Upgrade not necessary\n";
-      return;
-  }
-
-  my @version_list = $self->ordered_schema_versions ||
-    ( $db_version, $schema_version );
-
-  # remove all versions in list above the required version
-  while ( @version_list && ( $version_list[-1] ne $schema_version ) ) {
-      pop @version_list;
-  }
-
-  # remove all versions in list below the current version
-  while ( @version_list && ( $version_list[0] ne $db_version ) ) {
-      shift @version_list;
-  }
-
-  # check we have an appropriate list of versions
-  die if @version_list < 2;
-
-  # do sets of upgrade
-  while ( @version_list >= 2 ) {
-      $self->upgrade_single_step( $version_list[0], $version_list[1] );
-      shift @version_list;
+sub upgrade {
+  while ( my $version_list = $_[0]->next_version_set ) {
+    $_[0]->_upgrade_single_step($version_list);
   }
 }
 
-method upgrade_single_step($db_version, $target_version) {
-  if ($db_version eq $target_version) {
-    carp "Upgrade not necessary\n";
-    return;
-  }
-
-  # strangely the first time this is called can
-  # differ to subsequent times. so we call it
-  # here to be sure.
-  # XXX - just fix it
-  $self->storage->sqlt_type;
-
-  my $upgrade_file = $self->ddl_filename(
-    $self->storage->sqlt_type,
-    $target_version,
-    $self->upgrade_directory,
-    $db_version,
-  );
-
-  $self->create_upgrade_path({ upgrade_file => $upgrade_file });
-
-  unless (-f $upgrade_file) {
-    carp "Upgrade not possible, no upgrade file found ($upgrade_file), please create one\n";
-    return;
-  }
-
-  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->backup if $self->do_backup;
-  $self->schema->txn_do(sub { $self->do_upgrade });
-
-  # set row in dbix_class_schema_versions table
-  $self->version_rs->create({
-     version     => $target_version,
-     # ddl         => $ddl,
-     # upgrade_sql => $upgrade_sql,
-  });
-}
-
-method do_upgrade { $self->run_upgrade(qr/.*?/) }
-
-method run_upgrade($stm) {
-  return unless $self->_filedata;
-  my @statements = grep { $_ =~ $stm } @{$self->_filedata};
-
-  for (@statements) {
-    $self->storage->debugobj->query_start($_) if $self->storage->debug;
-    $self->apply_statement($_);
-    $self->storage->debugobj->query_end($_) if $self->storage->debug;
-  }
-}
-
-method apply_statement($statement) {
-  $self->storage->dbh->do($_) or carp "SQL was: $_"
-}
-
-sub _create_db_to_schema_diff {
-  my $self = shift;
-
-  my %driver_to_db_map = (
-    'mysql' => 'MySQL'
-  );
-
-  my $db = $driver_to_db_map{$self->storage->dbh->{Driver}{Name}};
-  unless ($db) {
-    print "Sorry, this is an unsupported DB\n";
-    return;
-  }
-
-  $self->throw_exception($self->storage->_sqlt_version_error)
-    unless $self->storage->_sqlt_version_ok;
-
-  my $db_tr = SQL::Translator->new({
-    add_drop_table => 1,
-    parser         => 'DBI',
-    parser_args    => { dbh  => $self->storage->dbh },
-    producer       => $db,
-  });
-
-  my $dbic_tr = SQL::Translator->new({
-    parser   => 'SQL::Translator::Parser::DBIx::Class',
-    data     => $self,
-    producer => $db,
-  });
-
-  $db_tr->schema->name('db_schema');
-  $dbic_tr->schema->name('dbic_schema');
-
-  # is this really necessary?
-  foreach my $tr ($db_tr, $dbic_tr) {
-    my $data = $tr->data;
-    $tr->parser->($tr, $$data);
-  }
-
-  my $diff = SQL::Translator::Diff::schema_diff(
-    $db_tr->schema,   $db,
-    $dbic_tr->schema, $db, {
-      ignore_constraint_names => 1,
-      ignore_index_names      => 1,
-      caseopt                 => 1,
-    }
-  );
-
-  my $filename = $self->ddl_filename(
-    $db,
-    $self->schema_version,
-    $self->upgrade_directory,
-    'PRE',
-  );
-
-  open my $file, '>', $filename
-    or $self->throw_exception("Can't open $filename for writing ($!)");
-  print {$file} $diff;
-  close $file;
-
-  carp "WARNING: There may be differences between your DB and your DBIC schema.\n" .
-       "Please review and if necessary run the SQL in $filename to sync your DB.\n";
-}
-
-method _read_sql_file($file) {
-  return unless $file;
+method backup { $self->storage->backup($self->backup_directory) }
 
-  open my $fh, '<', $file or carp("Can't open upgrade file, $file ($!)");
-  my @data = split /\n/, join '', <$fh>;
-  close $fh;
+__PACKAGE__->meta->make_immutable;
 
-  @data = grep {
-    $_ &&
-    !/^--/ &&
-    !/^(BEGIN|BEGIN TRANSACTION|COMMIT)/m
-  } split /;/,
-    join '', @data;
+1;
 
-  return \@data;
-}
+__END__
 
-1;
+vim: ts=2 sw=2 expandtab