use Moose;
with 'DBIx::Class::Storage::DBI::Replicated::Balancer';
+use DBIx::Class::Storage::DBI::Replicated::Types 'Weight';
use namespace::clean -except => 'meta';
=head1 NAME
This class defines the following attributes.
+=head2 master_read_weight
+
+A number from 0 to 1 that specifies what weight to give the master when choosing
+which backend to execute a read query on. A value of 0, which is the default,
+does no reads from master, while a value of 1 gives it the same priority as any
+single replicant.
+
+=cut
+
+has master_read_weight => (is => 'rw', isa => Weight, default => sub { 0 });
+
=head1 METHODS
This class defines the following methods.
sub next_storage {
my $self = shift @_;
- my @active_replicants = $self->pool->active_replicants;
- my $count_active_replicants = $#active_replicants +1;
- my $random_replicant = int(rand($count_active_replicants));
-
- return $active_replicants[$random_replicant];
+
+ my @replicants = $self->pool->active_replicants;
+ my $master = $self->master;
+
+ my $rnd = $self->random_number(@replicants + $self->master_read_weight);
+
+ return $rnd >= @replicants ? $master : $replicants[int $rnd];
+}
+
+=head2 random_number
+
+Returns a random number from 0 to x, not including x. Uses perl's
+L<perlfunc/rand> by default.
+
+=cut
+
+sub random_number {
+ rand($_[1])
}
=head1 AUTHOR