You have an eval, but you don't take advantage of it. In fact, you even rollback inside the eval, which makes no sense. 
use Sub::ScopeFinalizer qw( scope_finalizer );

{
   my @undo;
   my $guard = scope_finalizer {
      for (reverse(@undo)) {
         eval { $_->(); 1 }
            or warn($@);
      }
   };

   $dbh->do("CREATE DATABASE foo");
   push @undo, sub { $dbh->do("DROP DATABASE foo"); };

   mkdir("/path/foo")
      or die(...);
   push @undo, sub { rmdir "/path/foo" };

   ...

   @undo = ();  # Or $guard->disable();
}

[download]

The outer curlies could be an eval, a loop or just bare curlies; it's not relevant. It the block is exited via die, last, etc, the rollback will occur.

In reply to Re: Poor man's transaction construct by ikegami
in thread Poor man's transaction construct by dgaramond2

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