Refactor SQLA/select interaction (in reality just cleanup)

[dbsrgits/DBIx-Class.git] / lib / DBIx / Class / Storage / DBI / Replicated.pm

diff --git a/lib/DBIx/Class/Storage/DBI/Replicated.pm b/lib/DBIx/Class/Storage/DBI/Replicated.pm
index 6d226d2..20a8d73 100644 (file)
--- a/lib/DBIx/Class/Storage/DBI/Replicated.pm
+++ b/lib/DBIx/Class/Storage/DBI/Replicated.pm
@@ -15,7 +15,7 @@ use DBIx::Class::Storage::DBI::Replicated::Types qw/BalancerClassNamePart DBICSc
 use MooseX::Types::Moose qw/ClassName HashRef Object/;
 use Scalar::Util 'reftype';
 use Hash::Merge;
-use List::Util qw/min max/;
+use List::Util qw/min max reduce/;
 
 use namespace::clean -except => 'meta';
 
@@ -367,9 +367,11 @@ has 'write_handler' => (
     _dbh_sth
     _dbh_execute
     _prefetch_insert_auto_nextvals
+    _server_info_hash
   /],
 );
 
+
 has _master_connect_info_opts =>
   (is => 'rw', isa => HashRef, default => sub { {} });
 
@@ -1008,6 +1010,36 @@ sub _ping {
   return min map $_->_ping, $self->all_storages;
 }
 
+my $numify_ver = sub {
+  my $ver = shift;
+  my @numparts = split /\D+/, $ver;
+  my $format = '%d.' . (join '', ('%05d') x (@numparts - 1));
+
+  return sprintf $format, @numparts;
+};
+
+sub _server_info {
+  my $self = shift;
+
+  if (not $self->_server_info_hash) {
+    my $min_version_info = (
+      reduce { $a->[0] < $b->[0] ? $a : $b } 
+      map [ $numify_ver->($_->{dbms_version}), $_ ],
+      map $_->_server_info, $self->all_storages
+    )->[1];
+
+    $self->_server_info_hash($min_version_info); # on master
+  }
+
+  return $self->_server_info_hash;
+}
+
+sub _get_server_version {
+  my $self = shift;
+
+  return $self->_server_info->{dbms_version};
+}
+
 =head1 GOTCHAS
 
 Due to the fact that replicants can lag behind a master, you must take care to