1 package DBIx::Class::DeploymentHandler::DeployMethod::SQL::Translator;
4 # ABSTRACT: Manage your SQL and Perl migrations in nicely laid out directories
7 use Carp qw( carp croak );
8 use DBIx::Class::DeploymentHandler::Logger;
9 use Log::Contextual qw(:log :dlog), -default_logger =>
10 DBIx::Class::DeploymentHandler::Logger->new({
11 env_prefix => 'DBICDH'
14 use Method::Signatures::Simple;
18 require SQL::Translator::Diff;
20 require DBIx::Class::Storage; # loaded for type constraint
21 use DBIx::Class::DeploymentHandler::Types;
23 use File::Path 'mkpath';
24 use File::Spec::Functions;
26 with 'DBIx::Class::DeploymentHandler::HandlesDeploy';
35 isa => 'DBIx::Class::Schema',
41 isa => 'DBIx::Class::Storage',
46 method _build_storage {
47 my $s = $self->schema->storage;
48 $s->_determine_driver;
52 has sql_translator_args => (
55 default => sub { {} },
57 has script_directory => (
66 isa => 'DBIx::Class::DeploymentHandler::Databases',
68 default => sub { [qw( MySQL SQLite PostgreSQL )] },
77 has schema_version => (
83 # this will probably never get called as the DBICDH
84 # will be passing down a schema_version normally, which
85 # is built the same way, but we leave this in place
86 method _build_schema_version { $self->schema->schema_version }
88 method __ddl_consume_with_prefix($type, $versions, $prefix) {
89 my $base_dir = $self->script_directory;
91 my $main = catfile( $base_dir, $type );
93 catfile( $base_dir, '_common', $prefix, join q(-), @{$versions} );
97 $dir = catfile($main, $prefix, join q(-), @{$versions})
99 if ($self->ignore_ddl) {
102 croak "$main does not exist; please write/generate some SQL"
108 opendir my($dh), $dir;
110 map { $_ => "$dir/$_" }
111 grep { /\.(?:sql|pl|sql-\w+)$/ && -f "$dir/$_" }
115 die $_ unless $self->ignore_ddl;
118 opendir my($dh), $common;
119 for my $filename (grep { /\.(?:sql|pl)$/ && -f catfile($common,$_) } readdir $dh) {
120 unless ($files{$filename}) {
121 $files{$filename} = catfile($common,$filename);
127 return [@files{sort keys %files}]
130 method _ddl_preinstall_consume_filenames($type, $version) {
131 $self->__ddl_consume_with_prefix($type, [ $version ], 'preinstall')
134 method _ddl_schema_consume_filenames($type, $version) {
135 $self->__ddl_consume_with_prefix($type, [ $version ], 'deploy')
138 method _ddl_protoschema_upgrade_consume_filenames($versions) {
139 my $base_dir = $self->script_directory;
141 my $dir = catfile( $base_dir, '_preprocess_schema', 'upgrade', join q(-), @{$versions});
143 return [] unless -d $dir;
145 opendir my($dh), $dir;
146 my %files = map { $_ => "$dir/$_" } grep { /\.pl$/ && -f "$dir/$_" } readdir $dh;
149 return [@files{sort keys %files}]
152 method _ddl_protoschema_downgrade_consume_filenames($versions) {
153 my $base_dir = $self->script_directory;
155 my $dir = catfile( $base_dir, '_preprocess_schema', 'downgrade', join q(-), @{$versions});
157 return [] unless -d $dir;
159 opendir my($dh), $dir;
160 my %files = map { $_ => "$dir/$_" } grep { /\.pl$/ && -f "$dir/$_" } readdir $dh;
163 return [@files{sort keys %files}]
166 method _ddl_protoschema_produce_filename($version) {
167 my $dirname = catfile( $self->script_directory, '_source', 'deploy', $version );
168 mkpath($dirname) unless -d $dirname;
170 return catfile( $dirname, '001-auto.yml' );
173 method _ddl_schema_produce_filename($type, $version) {
174 my $dirname = catfile( $self->script_directory, $type, 'deploy', $version );
175 mkpath($dirname) unless -d $dirname;
177 return catfile( $dirname, '001-auto.sql' );
180 method _ddl_schema_upgrade_consume_filenames($type, $versions) {
181 $self->__ddl_consume_with_prefix($type, $versions, 'upgrade')
184 method _ddl_schema_downgrade_consume_filenames($type, $versions) {
185 $self->__ddl_consume_with_prefix($type, $versions, 'downgrade')
188 method _ddl_schema_upgrade_produce_filename($type, $versions) {
189 my $dir = $self->script_directory;
191 my $dirname = catfile( $dir, $type, 'upgrade', join q(-), @{$versions});
192 mkpath($dirname) unless -d $dirname;
194 return catfile( $dirname, '001-auto.sql' );
197 method _ddl_schema_downgrade_produce_filename($type, $versions, $dir) {
198 my $dirname = catfile( $dir, $type, 'downgrade', join q(-), @{$versions} );
199 mkpath($dirname) unless -d $dirname;
201 return catfile( $dirname, '001-auto.sql');
204 method _run_sql_array($sql) {
205 my $storage = $self->storage;
208 $_ && # remove blank lines
209 !/^(BEGIN|BEGIN TRANSACTION|COMMIT)/ # strip txn's
211 s/^\s+//; s/\s+$//; # trim whitespace
212 join '', grep { !/^--/ } split /\n/ # remove comments
215 Dlog_trace { "Running SQL $_" } $sql;
216 foreach my $line (@{$sql}) {
217 $storage->_query_start($line);
218 # the whole reason we do this is so that we can see the line that was run
220 $storage->dbh_do (sub { $_[1]->do($line) });
223 die "$_ (running line '$line')"
225 $storage->_query_end($line);
227 return join "\n", @$sql
230 method _run_sql($filename) {
231 log_debug { "Running SQL from $filename" };
232 return $self->_run_sql_array($self->_read_sql_file($filename));
235 method _run_perl($filename) {
236 log_debug { "Running Perl from $filename" };
237 my $filedata = do { local( @ARGV, $/ ) = $filename; <> };
239 no warnings 'redefine';
240 my $fn = eval "$filedata";
242 Dlog_trace { "Running Perl $_" } $fn;
245 carp "$filename failed to compile: $@";
246 } elsif (ref $fn eq 'CODE') {
249 carp "$filename should define an anonymouse sub that takes a schema but it didn't!";
253 method _run_sql_and_perl($filenames, $sql_to_run) {
254 my @files = @{$filenames};
255 my $guard = $self->schema->txn_scope_guard if $self->txn_wrap;
257 $self->_run_sql_array($sql_to_run) if $self->ignore_ddl;
259 my $sql = ($sql_to_run)?join ";\n", @$sql_to_run:'';
261 for my $filename (@files) {
262 if ($self->ignore_ddl && $filename =~ /^[^_]*-auto.*\.sql$/) {
264 } elsif ($filename =~ /\.sql$/) {
265 $sql .= $self->_run_sql($filename)
266 } elsif ( $filename =~ /\.pl$/ ) {
267 $self->_run_perl($filename)
269 croak "A file ($filename) got to deploy that wasn't sql or perl!";
273 $guard->commit if $self->txn_wrap;
280 my $version = (shift @_ || {})->{version} || $self->schema_version;
281 log_info { "deploying version $version" };
282 my $sqlt_type = $self->storage->sqlt_type;
284 if ($self->ignore_ddl) {
285 $sql = $self->_sql_from_yaml({},
286 '_ddl_protoschema_produce_filename', $sqlt_type
289 return $self->_run_sql_and_perl($self->_ddl_schema_consume_filenames(
298 my $version = $args->{version} || $self->schema_version;
299 log_info { "preinstalling version $version" };
300 my $storage_type = $args->{storage_type} || $self->storage->sqlt_type;
302 my @files = @{$self->_ddl_preinstall_consume_filenames(
307 for my $filename (@files) {
308 # We ignore sql for now (till I figure out what to do with it)
309 if ( $filename =~ /^(.+)\.pl$/ ) {
310 my $filedata = do { local( @ARGV, $/ ) = $filename; <> };
312 no warnings 'redefine';
313 my $fn = eval "$filedata";
317 carp "$filename failed to compile: $@";
318 } elsif (ref $fn eq 'CODE') {
321 carp "$filename should define an anonymous sub but it didn't!";
324 croak "A file ($filename) got to preinstall_scripts that wasn't sql or perl!";
329 method _sqldiff_from_yaml($from_version, $to_version, $db, $direction) {
330 my $dir = $self->script_directory;
333 ignore_constraint_names => 1,
334 ignore_index_names => 1,
335 %{$self->sql_translator_args}
340 my $prefilename = $self->_ddl_protoschema_produce_filename($from_version, $dir);
342 # should probably be a croak
343 carp("No previous schema file found ($prefilename)")
344 unless -e $prefilename;
346 my $t = SQL::Translator->new({
350 parser => 'SQL::Translator::Parser::YAML',
353 my $out = $t->translate( $prefilename )
356 $source_schema = $t->schema;
358 $source_schema->name( $prefilename )
359 unless $source_schema->name;
364 my $filename = $self->_ddl_protoschema_produce_filename($to_version, $dir);
366 # should probably be a croak
367 carp("No next schema file found ($filename)")
370 my $t = SQL::Translator->new({
374 parser => 'SQL::Translator::Parser::YAML',
377 my $out = $t->translate( $filename )
380 $dest_schema = $t->schema;
382 $dest_schema->name( $filename )
383 unless $dest_schema->name;
386 my $transform_files_method = "_ddl_protoschema_${direction}_consume_filenames";
387 my $transforms = $self->_coderefs_per_files(
388 $self->$transform_files_method([$from_version, $to_version])
390 $_->($source_schema, $dest_schema) for @$transforms;
392 return [SQL::Translator::Diff::schema_diff(
399 method _sql_from_yaml($sqltargs, $from_file, $db) {
400 my $schema = $self->schema;
401 my $version = $self->schema_version;
403 my $sqlt = SQL::Translator->new({
405 parser => 'SQL::Translator::Parser::YAML',
410 my $yaml_filename = $self->$from_file($version);
412 my @sql = $sqlt->translate($yaml_filename);
414 carp("Failed to translate to $db, skipping. (" . $sqlt->error . ")");
420 sub _prepare_install {
422 my $sqltargs = { %{$self->sql_translator_args}, %{shift @_} };
423 my $from_file = shift;
425 my $dir = $self->script_directory;
426 my $databases = $self->databases;
427 my $version = $self->schema_version;
429 foreach my $db (@$databases) {
430 my $sql = $self->_sql_from_yaml($sqltargs, $from_file, $db ) or next;
432 my $filename = $self->$to_file($db, $version, $dir);
434 carp "Overwriting existing DDL file - $filename";
437 open my $file, q(>), $filename;
438 print {$file} join ";\n", @$sql;
443 sub _resultsource_install_filename {
444 my ($self, $source_name) = @_;
446 my ($self, $type, $version) = @_;
447 my $dirname = catfile( $self->script_directory, $type, 'deploy', $version );
448 mkpath($dirname) unless -d $dirname;
450 return catfile( $dirname, "001-auto-$source_name.sql" );
454 sub _resultsource_protoschema_filename {
455 my ($self, $source_name) = @_;
457 my ($self, $version) = @_;
458 my $dirname = catfile( $self->script_directory, '_source', $version );
459 mkpath($dirname) unless -d $dirname;
461 return catfile( $dirname, "001-auto-$source_name.yml" );
465 sub install_resultsource {
466 my ($self, $args) = @_;
467 my $source = $args->{result_source};
468 my $version = $args->{version};
469 log_info { 'installing_resultsource ' . $source->source_name . ", version $version" };
470 my $rs_install_file =
471 $self->_resultsource_install_filename($source->source_name);
474 $self->$rs_install_file(
475 $self->storage->sqlt_type,
479 $self->_run_sql_and_perl($files);
482 sub prepare_resultsource_install {
484 my $source = (shift @_)->{result_source};
485 log_info { 'preparing install for resultsource ' . $source->source_name };
487 my $install_filename = $self->_resultsource_install_filename($source->source_name);
488 my $proto_filename = $self->_resultsource_protoschema_filename($source->source_name);
489 $self->prepare_protoschema({
490 parser_args => { sources => [$source->source_name], }
492 $self->_prepare_install({}, $proto_filename, $install_filename);
496 log_info { 'preparing deploy' };
498 $self->prepare_protoschema({}, '_ddl_protoschema_produce_filename');
499 $self->_prepare_install({}, '_ddl_protoschema_produce_filename', '_ddl_schema_produce_filename');
502 sub prepare_upgrade {
503 my ($self, $args) = @_;
505 "preparing upgrade from $args->{from_version} to $args->{to_version}"
507 $self->_prepare_changegrade(
508 $args->{from_version}, $args->{to_version}, $args->{version_set}, 'upgrade'
512 sub prepare_downgrade {
513 my ($self, $args) = @_;
515 "preparing downgrade from $args->{from_version} to $args->{to_version}"
517 $self->_prepare_changegrade(
518 $args->{from_version}, $args->{to_version}, $args->{version_set}, 'downgrade'
522 method _coderefs_per_files($files) {
523 no warnings 'redefine';
524 [map eval do { local( @ARGV, $/ ) = $_; <> }, @$files]
527 method _prepare_changegrade($from_version, $to_version, $version_set, $direction) {
528 my $schema = $self->schema;
529 my $databases = $self->databases;
530 my $dir = $self->script_directory;
532 my $schema_version = $self->schema_version;
533 my $diff_file_method = "_ddl_schema_${direction}_produce_filename";
534 foreach my $db (@$databases) {
535 my $diff_file = $self->$diff_file_method($db, $version_set, $dir );
537 carp("Overwriting existing $direction-diff file - $diff_file");
541 open my $file, q(>), $diff_file;
542 print {$file} join ";\n", @{$self->_sqldiff_from_yaml($from_version, $to_version, $db, $direction)};
547 method _read_sql_file($file) {
550 open my $fh, '<', $file;
551 my @data = split /;\n/, join '', <$fh>;
555 $_ && # remove blank lines
556 !/^(BEGIN|BEGIN TRANSACTION|COMMIT)/ # strip txn's
558 s/^\s+//; s/\s+$//; # trim whitespace
559 join '', grep { !/^--/ } split /\n/ # remove comments
565 sub downgrade_single_step {
567 my $version_set = (shift @_)->{version_set};
568 Dlog_info { "downgrade_single_step'ing $_" } $version_set;
570 my $sqlt_type = $self->storage->sqlt_type;
572 if ($self->ignore_ddl) {
573 $sql_to_run = $self->_sqldiff_from_yaml(
574 $version_set->[0], $version_set->[1], $sqlt_type, 'downgrade',
577 my $sql = $self->_run_sql_and_perl($self->_ddl_schema_downgrade_consume_filenames(
585 sub upgrade_single_step {
587 my $version_set = (shift @_)->{version_set};
588 Dlog_info { "upgrade_single_step'ing $_" } $version_set;
590 my $sqlt_type = $self->storage->sqlt_type;
592 if ($self->ignore_ddl) {
593 $sql_to_run = $self->_sqldiff_from_yaml(
594 $version_set->[0], $version_set->[1], $sqlt_type, 'upgrade',
597 my $sql = $self->_run_sql_and_perl($self->_ddl_schema_upgrade_consume_filenames(
604 sub prepare_protoschema {
606 my $sqltargs = { %{$self->sql_translator_args}, %{shift @_} };
609 = $self->$to_file($self->schema_version);
611 # we do this because the code that uses this sets parser args,
612 # so we just need to merge in the package
613 $sqltargs->{parser_args}{package} = $self->schema;
614 my $sqlt = SQL::Translator->new({
615 parser => 'SQL::Translator::Parser::DBIx::Class',
616 producer => 'SQL::Translator::Producer::YAML',
620 my $yml = $sqlt->translate;
622 croak("Failed to translate to YAML: " . $sqlt->error)
626 carp "Overwriting existing DDL-YML file - $filename";
630 open my $file, q(>), $filename;
635 __PACKAGE__->meta->make_immutable;
639 # vim: ts=2 sw=2 expandtab
645 This class is the meat of L<DBIx::Class::DeploymentHandler>. It takes care
646 of generating serialized schemata as well as sql files to move from one
647 version of a schema to the rest. One of the hallmark features of this class
648 is that it allows for multiple sql files for deploy and upgrade, allowing
649 developers to fine tune deployment. In addition it also allows for perl
650 files to be run at any stage of the process.
652 For basic usage see L<DBIx::Class::DeploymentHandler::HandlesDeploy>. What's
653 documented here is extra fun stuff or private methods.
655 =head1 DIRECTORY LAYOUT
657 Arguably this is the best feature of L<DBIx::Class::DeploymentHandler>. It's
658 heavily based upon L<DBIx::Migration::Directories>, but has some extensions and
659 modifications, so even if you are familiar with it, please read this. I feel
660 like the best way to describe the layout is with the following example:
686 | | `- 002-remove-customers.pl
689 | `- 002-generate-customers.pl
696 | |- 001-create_database.pl
697 | `- 002-create_users_and_permissions.pl
705 So basically, the code
709 on an C<SQLite> database that would simply run
710 C<$sql_migration_dir/SQLite/deploy/1/001-auto.sql>. Next,
712 $dm->upgrade_single_step([1,2])
714 would run C<$sql_migration_dir/SQLite/upgrade/1-2/001-auto.sql> followed by
715 C<$sql_migration_dir/_common/upgrade/1-2/002-generate-customers.pl>.
717 C<.pl> files don't have to be in the C<_common> directory, but most of the time
718 they should be, because perl scripts are generally be database independent.
720 Note that unlike most steps in the process, C<preinstall> will not run SQL, as
721 there may not even be an database at preinstall time. It will run perl scripts
722 just like the other steps in the process, but nothing is passed to them.
723 Until people have used this more it will remain freeform, but a recommended use
724 of preinstall is to have it prompt for username and password, and then call the
725 appropriate C<< CREATE DATABASE >> commands etc.
727 =head2 Directory Specification
729 The following subdirectories are recognized by this DeployMethod:
733 =item C<_source> This directory can contain the following directories:
737 =item C<downgrade> This directory merely contains directories named after
738 migrations, which are of the form C<$from_version-$to_version>. Inside of
739 these directories you may put Perl scripts which are to return a subref
740 that takes the arguments C<< $from_schema, $to_schema >>, which are
741 L<SQL::Translator::Schema> objects.
743 =item C<upgrade> This directory merely contains directories named after
744 migrations, which are of the form C<$from_version-$to_version>. Inside of
745 these directories you may put Perl scripts which are to return a subref
746 that takes the arguments C<< $from_schema, $to_schema >>, which are
747 L<SQL::Translator::Schema> objects.
749 =item C<deploy> This directory merely contains directories named after schema
750 versions, which in turn contain C<yaml> files that are serialized versions
751 of the schema at that version. These files are not for editing by hand.
755 =item C<$storage_type> This is a set of scripts that gets run depending on what
756 your storage type is. If you are not sure what your storage type is, take a
757 look at the producers listed for L<SQL::Translator>. Also note, C<_common>
758 is a special case. C<_common> will get merged into whatever other files you
759 already have. This directory can containt the following directories itself:
763 =item C<preinstall> Gets run before the C<deploy> is C<deploy>ed. Has the
764 same structure as the C<deploy> subdirectory as well; that is, it has a
765 directory for each schema version. Unlike C<deploy>, C<upgrade>, and C<downgrade>
766 though, it can only run C<.pl> files, and the coderef in the perl files get
767 no arguments passed to them.
769 =item C<deploy> Gets run when the schema is C<deploy>ed. Structure is a
770 directory per schema version, and then files are merged with C<_common> and run
771 in filename order. C<.sql> files are merely run, as expected. C<.pl> files are
772 run according to L</PERL SCRIPTS>.
774 =item C<upgrade> Gets run when the schema is C<upgrade>d. Structure is a directory
775 per upgrade step, (for example, C<1-2> for upgrading from version 1 to version
776 2,) and then files are merged with C<_common> and run in filename order.
777 C<.sql> files are merely run, as expected. C<.pl> files are run according
780 =item C<downgrade> Gets run when the schema is C<downgrade>d. Structure is a directory
781 per downgrade step, (for example, C<2-1> for downgrading from version 2 to version
782 1,) and then files are merged with C<_common> and run in filename order.
783 C<.sql> files are merely run, as expected. C<.pl> files are run according
793 A perl script for this tool is very simple. It merely needs to contain an
794 anonymous sub that takes a L<DBIx::Class::Schema> as it's only argument.
795 A very basic perl script might look like:
805 $schema->resultset('Users')->create({
813 The L<DBIx::Class::Schema> (B<required>) that is used to talk to the database
814 and generate the DDL.
818 The L<DBIx::Class::Storage> that is I<actually> used to talk to the database
819 and generate the DDL. This is automatically created with L</_build_storage>.
821 =attr sql_translator_args
823 The arguments that get passed to L<SQL::Translator> when it's used.
825 =attr script_directory
827 The directory (default C<'sql'>) that scripts are stored in
831 The types of databases (default C<< [qw( MySQL SQLite PostgreSQL )] >>) to
836 Set to true (which is the default) to wrap all upgrades and deploys in a single
841 The version the schema on your harddrive is at. Defaults to
842 C<< $self->schema->schema_version >>.