X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=dbsrgits%2FDBIx-Class-DeploymentHandler.git;a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FDeploymentHandler%2FDeployMethod%2FSQL%2FTranslator.pm;h=cee797faf54556ebb9e06912e9d41d5a19fe76fa;hp=167e455c021c037fc7aee75b7caf7c885af8894a;hb=32bd7c454317d19db26bd3034a1d0ca9eabd55db;hpb=6e2665d32fec2eb9c168202abaf45e26fa87470e

diff --git a/lib/DBIx/Class/DeploymentHandler/DeployMethod/SQL/Translator.pm b/lib/DBIx/Class/DeploymentHandler/DeployMethod/SQL/Translator.pm
index 167e455..cee797f 100644
--- a/lib/DBIx/Class/DeploymentHandler/DeployMethod/SQL/Translator.pm
+++ b/lib/DBIx/Class/DeploymentHandler/DeployMethod/SQL/Translator.pm
@@ -10,6 +10,7 @@ use Log::Contextual qw(:log :dlog), -package_logger =>
   DBIx::Class::DeploymentHandler::Logger->new({
     env_prefix => 'DBICDH'
   });
+use Context::Preserve;
 
 use Try::Tiny;
 
@@ -89,9 +90,9 @@ has schema_version => (
 # this will probably never get called as the DBICDH
 # will be passing down a schema_version normally, which
 # is built the same way, but we leave this in place
-sub _build_schema_version { 
+sub _build_schema_version {
   my $self = shift;
-  $self->schema->schema_version 
+  $self->schema->schema_version
 }
 
 sub __ddl_consume_with_prefix {
@@ -243,13 +244,7 @@ sub _run_sql_array {
   my ($self, $sql) = @_;
   my $storage = $self->storage;
 
-  $sql = [grep {
-    $_ && # remove blank lines
-    !/^(BEGIN|BEGIN TRANSACTION|COMMIT)/ # strip txn's
-  } map {
-    s/^\s+//; s/\s+$//; # trim whitespace
-    join '', grep { !/^--/ } split /\n/ # remove comments
-  } @$sql];
+  $sql = [ _split_sql_chunk( @$sql ) ];
 
   Dlog_trace { "Running SQL $_" } $sql;
   foreach my $line (@{$sql}) {
@@ -266,55 +261,102 @@ sub _run_sql_array {
   return join "\n", @$sql
 }
 
+# split a chunk o' SQL into statements
+sub _split_sql_chunk {
+    my @sql = map { split /;\n/, $_ } @_;
+
+    for ( @sql ) {
+        # strip transactions
+        s/^(?:BEGIN|BEGIN TRANSACTION|COMMIT).*//mgi;
+
+        # trim whitespaces
+        s/^\s+|\s+$//mg;
+
+        # remove comments
+        s/^--.*//gm;
+
+        # remove blank lines
+        s/^\n//mg;
+
+        # put on single line
+        s/\n/ /g;
+    }
+
+    return @sql;
+}
+
 sub _run_sql {
   my ($self, $filename) = @_;
   log_debug { "Running SQL from $filename" };
   return $self->_run_sql_array($self->_read_sql_file($filename));
 }
 
+sub _load_sandbox {
+  my $_file = shift;
+
+  my $_package = $_file;
+  $_package =~ s/([^A-Za-z0-9_])/sprintf("_%2x", ord($1))/eg;
+
+  my $fn = eval sprintf <<'END_EVAL', $_package;
+package DBICDH::Sandbox::%s;
+{
+  our $app;
+  $app ||= require $_file;
+  if ( !$app && ( my $error = $@ || $! )) { die $error; }
+  $app;
+}
+END_EVAL
+
+  croak $@ if $@;
+
+  croak "$_file should define an anonymouse sub that takes a schema but it didn't!"
+     unless ref $fn && ref $fn eq 'CODE';
+
+  return $fn;
+}
+
 sub _run_perl {
   my ($self, $filename, $versions) = @_;
   log_debug { "Running Perl from $filename" };
-  my $filedata = do { local( @ARGV, $/ ) = $filename; <> };
 
-  no warnings 'redefine';
-  my $fn = eval "$filedata";
-  use warnings;
+  my $fn = _load_sandbox($filename);
+
   Dlog_trace { "Running Perl $_" } $fn;
 
-  if ($@) {
-    croak "$filename failed to compile: $@";
-  } elsif (ref $fn eq 'CODE') {
-    $fn->($self->schema, $versions)
-  } else {
-    croak "$filename should define an anonymouse sub that takes a schema but it didn't!";
-  }
+  $fn->($self->schema, $versions)
 }
 
-sub _run_sql_and_perl {
-  my ($self, $filenames, $sql_to_run, $versions) = @_;
-  my @files   = @{$filenames};
-  my $guard   = $self->schema->txn_scope_guard if $self->txn_wrap;
+sub txn_do {
+   my ( $self, $code ) = @_;
+   return $code->() unless $self->txn_wrap;
 
-  $self->_run_sql_array($sql_to_run) if $self->ignore_ddl;
+   my $guard = $self->schema->txn_scope_guard;
 
-  my $sql = ($sql_to_run)?join ";\n", @$sql_to_run:'';
-  FILENAME:
-  for my $filename (@files) {
-    if ($self->ignore_ddl && $filename =~ /^[^_]*-auto.*\.sql$/) {
-      next FILENAME
-    } elsif ($filename =~ /\.sql$/) {
-       $sql .= $self->_run_sql($filename)
-    } elsif ( $filename =~ /\.pl$/ ) {
-       $self->_run_perl($filename, $versions)
-    } else {
-      croak "A file ($filename) got to deploy that wasn't sql or perl!";
-    }
-  }
+   return preserve_context { $code->() } after => sub { $guard->commit };
+}
 
-  $guard->commit if $self->txn_wrap;
+sub _run_sql_and_perl {
+  my ($self, $filenames, $sql_to_run, $versions) = @_;
+  my @files   = @{$filenames};
+  $self->txn_do(sub {
+     $self->_run_sql_array($sql_to_run) if $self->ignore_ddl;
+
+     my $sql = ($sql_to_run)?join ";\n", @$sql_to_run:'';
+     FILENAME:
+     for my $filename (@files) {
+       if ($self->ignore_ddl && $filename =~ /^[^_]*-auto.*\.sql$/) {
+         next FILENAME
+       } elsif ($filename =~ /\.sql$/) {
+          $sql .= $self->_run_sql($filename)
+       } elsif ( $filename =~ /\.pl$/ ) {
+          $self->_run_perl($filename, $versions)
+       } else {
+         croak "A file ($filename) got to deploy that wasn't sql or perl!";
+       }
+     }
 
-  return $sql;
+     return $sql;
+  });
 }
 
 sub deploy {
@@ -613,19 +655,10 @@ sub _read_sql_file {
   my ($self, $file)  = @_;
   return unless $file;
 
-  open my $fh, '<', $file;
-  my @data = split /;\n/, join '', <$fh>;
-  close $fh;
-
-  @data = grep {
-    $_ && # remove blank lines
-    !/^(BEGIN|BEGIN TRANSACTION|COMMIT)/ # strip txn's
-  } map {
-    s/^\s+//; s/\s+$//; # trim whitespace
-    join '', grep { !/^--/ } split /\n/ # remove comments
-  } @data;
+   local $/ = undef;  #sluuuuuurp
 
-  return \@data;
+  open my $fh, '<', $file;
+  return [ _split_sql_chunk( <$fh> ) ];
 }
 
 sub downgrade_single_step {
@@ -888,7 +921,10 @@ A very basic perl script might look like:
  use strict;
  use warnings;
 
- sub {
+ use DBIx::Class::DeploymentHandler::DeployMethod::SQL::Translator::ScriptHelpers
+    'schema_from_schema_loader';
+
+ schema_from_schema_loader({ naming => 'v4' }, sub {
    my $schema = shift;
 
    # [1] for deploy, [1,2] for upgrade or downgrade, probably used with _any
@@ -898,7 +934,12 @@ A very basic perl script might look like:
      name => 'root',
      password => 'root',
    })
- }
+ })
+
+Note that the above uses
+L<DBIx::Class::DeploymentHanlder::DeployMethod::SQL::Translator::ScriptHelpers/schema_from_schema_loader>.
+Using a raw coderef is strongly discouraged as it is likely to break as you
+modify your schema.
 
 =attr ignore_ddl
 
@@ -946,3 +987,9 @@ transaction.
 
 The version the schema on your harddrive is at.  Defaults to
 C<< $self->schema->schema_version >>.
+
+=head1 SEE ALSO
+
+This class is an implementation of
+L<DBIx::Class::DeploymentHandler::HandlesDeploy>.  Pretty much all the
+documentation is there.