X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FStorage%2FDBI%2FReplicated%2FBalancer.pm;h=5c32f56047918007fc9a56abf051bafb16717fdd;hb=84ccbc01107eeadbbac452d5368b4dd74f12ab8e;hp=8af899c25a0a496c4dee667a905cfe8d69ca263f;hpb=13b9e8285fc913aa88469afa8d28fd3cd33e04cc;p=dbsrgits%2FDBIx-Class-Historic.git diff --git a/lib/DBIx/Class/Storage/DBI/Replicated/Balancer.pm b/lib/DBIx/Class/Storage/DBI/Replicated/Balancer.pm index 8af899c..5c32f56 100644 --- a/lib/DBIx/Class/Storage/DBI/Replicated/Balancer.pm +++ b/lib/DBIx/Class/Storage/DBI/Replicated/Balancer.pm @@ -2,6 +2,10 @@ package DBIx::Class::Storage::DBI::Replicated::Balancer; use Moose::Role; requires 'next_storage'; +use MooseX::Types::Moose qw/Int/; +use DBIx::Class::Storage::DBI::Replicated::Pool; +use DBIx::Class::Storage::DBI::Replicated::Types qw/DBICStorageDBI/; +use namespace::clean -except => 'meta'; =head1 NAME @@ -10,7 +14,7 @@ DBIx::Class::Storage::DBI::Replicated::Balancer - A Software Load Balancer =head1 SYNOPSIS This role is used internally by L. - + =head1 DESCRIPTION Given a pool (L) of replicated @@ -31,7 +35,7 @@ validating every query. has 'auto_validate_every' => ( is=>'rw', - isa=>'Int', + isa=>Int, predicate=>'has_auto_validate_every', ); @@ -45,7 +49,7 @@ ultimate fallback. has 'master' => ( is=>'ro', - isa=>'DBIx::Class::Storage::DBI', + isa=>DBICStorageDBI, required=>1, ); @@ -71,13 +75,13 @@ databases is going to help you to scale traffic. This attribute returns the next slave to handle a read request. Your L attribute has methods to help you shuffle through all the available replicants -via it's balancer object. +via its balancer object. =cut has 'current_replicant' => ( is=> 'rw', - isa=>'DBIx::Class::Storage::DBI', + isa=>DBICStorageDBI, lazy_build=>1, handles=>[qw/ select @@ -166,10 +170,12 @@ the load evenly (hopefully) across existing capacity. around 'select' => sub { my ($select, $self, @args) = @_; - + if (my $forced_pool = $args[-1]->{force_pool}) { delete $args[-1]->{force_pool}; return $self->_get_forced_pool($forced_pool)->select(@args); + } elsif($self->master->{transaction_depth}) { + return $self->master->select(@args); } else { $self->increment_storage; return $self->$select(@args); @@ -186,10 +192,12 @@ the load evenly (hopefully) across existing capacity. around 'select_single' => sub { my ($select_single, $self, @args) = @_; - + if (my $forced_pool = $args[-1]->{force_pool}) { delete $args[-1]->{force_pool}; return $self->_get_forced_pool($forced_pool)->select_single(@args); + } elsif($self->master->{transaction_depth}) { + return $self->master->select_single(@args); } else { $self->increment_storage; return $self->$select_single(@args); @@ -221,7 +229,7 @@ sub _get_forced_pool { return $forced_pool; } elsif($forced_pool eq 'master') { return $self->master; - } elsif(my $replicant = $self->pool->replicants($forced_pool)) { + } elsif(my $replicant = $self->pool->replicants->{$forced_pool}) { return $replicant; } else { $self->master->throw_exception("$forced_pool is not a named replicant."); @@ -230,7 +238,7 @@ sub _get_forced_pool { =head1 AUTHOR -John Napiorkowski +John Napiorkowski =head1 LICENSE