## use, so we explicitly test for these.
my %replication_required = (
- 'Moose' => '0.77',
- 'MooseX::AttributeHelpers' => '0.12',
- 'MooseX::Types' => '0.10',
+ 'Moose' => '0.90',
+ 'MooseX::Types' => '0.21',
'namespace::clean' => '0.11',
'Hash::Merge' => '0.11'
);
my @didnt_load;
for my $module (keys %replication_required) {
- eval "use $module $replication_required{$module}";
- push @didnt_load, "$module $replication_required{$module}"
- if $@;
+ eval "use $module $replication_required{$module}";
+ push @didnt_load, "$module $replication_required{$module}"
+ if $@;
}
croak("@{[ join ', ', @didnt_load ]} are missing and are required for Replication")
use DBIx::Class::Storage::DBI::Replicated::Types qw/BalancerClassNamePart DBICSchema DBICStorageDBI/;
use MooseX::Types::Moose qw/ClassName HashRef Object/;
use Scalar::Util 'reftype';
-use Carp::Clan qw/^DBIx::Class/;
use Hash::Merge 'merge';
use namespace::clean -except => 'meta';
also define your arguments, such as which balancer you want and any arguments
that the Pool object should get.
+ my $schema = Schema::Class->clone;
$schema->storage_type( ['::DBI::Replicated', {balancer=>'::Random'}] );
+ $schema->connection(...);
Next, you need to add in the Replicants. Basically this is an array of
arrayrefs, where each arrayref is database connect information. Think of these
=head1 NOTES
The consistancy betweeen master and replicants is database specific. The Pool
-gives you a method to validate it's replicants, removing and replacing them
+gives you a method to validate its replicants, removing and replacing them
when they fail/pass predefined criteria. Please make careful use of the ways
to force a query to run against Master when needed.
Replicated Storage has additional requirements not currently part of L<DBIx::Class>
- Moose => 0.77
- MooseX::AttributeHelpers => 0.12
- MooseX::Types => 0.10
- namespace::clean => 0.11
- Hash::Merge => 0.11
+ Moose => '0.90',
+ MooseX::Types => '0.21',
+ namespace::clean => '0.11',
+ Hash::Merge => '0.11'
You will need to install these modules manually via CPAN or make them part of the
Makefile for your distribution.
isa=>'DBIx::Class::Storage::DBI::Replicated::Pool',
lazy_build=>1,
handles=>[qw/
- connect_replicants
+ connect_replicants
replicants
has_replicants
/],
select
select_single
columns_info_for
- /],
+ /],
);
=head2 write_handler
is=>'ro',
isa=>Object,
lazy_build=>1,
- handles=>[qw/
+ handles=>[qw/
on_connect_do
- on_disconnect_do
+ on_disconnect_do
connect_info
throw_exception
sql_maker
create_ddl_dir
deployment_statements
datetime_parser
- datetime_parser_type
- build_datetime_parser
+ datetime_parser_type
+ build_datetime_parser
last_insert_id
insert
insert_bulk
sth
deploy
with_deferred_fk_checks
- dbh_do
+ dbh_do
reload_row
- with_deferred_fk_checks
+ with_deferred_fk_checks
_prep_for_execute
- backup
- is_datatype_numeric
- _count_select
- _subq_count_select
- _subq_update_delete
- svp_rollback
- svp_begin
- svp_release
+ backup
+ is_datatype_numeric
+ _count_select
+ _subq_count_select
+ _subq_update_delete
+ svp_rollback
+ svp_begin
+ svp_release
/],
);
);
$self->pool($self->_build_pool)
- if $self->pool;
+ if $self->pool;
}
if (@opts{qw/balancer_type balancer_args/}) {
);
$self->balancer($self->_build_balancer)
- if $self->balancer;
+ if $self->balancer;
}
$self->_master_connect_info_opts(\%opts);
my $master = $self->master;
$master->_determine_driver;
Moose::Meta::Class->initialize(ref $master);
- DBIx::Class::Storage::DBI::Replicated::WithDSN->meta->apply($master);
+
+ my $class = Moose::Meta::Class->create_anon_class(
+ superclasses => [ ref $master ],
+ roles => [ 'DBIx::Class::Storage::DBI::Replicated::WithDSN' ],
+ cache => 1,
+ );
+ $class->rebless_instance($master);
+
+ # link pool back to master
+ $self->pool->master($master);
$wantarray ? @res : $res;
};
=head2 BUILDARGS
-L<DBIx::Class::Schema> when instantiating it's storage passed itself as the
+L<DBIx::Class::Schema> when instantiating its storage passed itself as the
first argument. So we need to massage the arguments a bit so that all the
bits get put into the correct places.
=cut
sub BUILDARGS {
- my ($class, $schema, $storage_type_args, @args) = @_;
+ my ($class, $schema, $storage_type_args, @args) = @_;
return {
- schema=>$schema,
- %$storage_type_args,
- @args
+ schema=>$schema,
+ %$storage_type_args,
+ @args
}
}
sub _build_balancer {
my $self = shift @_;
$self->create_balancer(
- pool=>$self->pool,
+ pool=>$self->pool,
master=>$self->master,
%{$self->balancer_args},
);
for my $r (@args) {
$r = [ $r ] unless reftype $r eq 'ARRAY';
- croak "coderef replicant connect_info not supported"
+ $self->throw_exception('coderef replicant connect_info not supported')
if ref $r->[0] && reftype $r->[0] eq 'CODE';
# any connect_info options?
my $i = 0;
$i++ while $i < @$r && (reftype($r->[$i])||'') ne 'HASH';
-# make one if none
+# make one if none
$r->[$i] = {} unless $r->[$i];
# merge if two hashes
my @hashes = @$r[$i .. $#{$r}];
- croak "invalid connect_info options"
+ $self->throw_exception('invalid connect_info options')
if (grep { reftype($_) eq 'HASH' } @hashes) != @hashes;
- croak "too many hashrefs in connect_info"
+ $self->throw_exception('too many hashrefs in connect_info')
if @hashes > 2;
my %opts = %{ merge(reverse @hashes) };
# delete them
splice @$r, $i+1, ($#{$r} - $i), ();
+# make sure master/replicants opts don't clash
+ my %master_opts = %{ $self->_master_connect_info_opts };
+ if (exists $opts{dbh_maker}) {
+ delete @master_opts{qw/dsn user password/};
+ }
+ delete $master_opts{dbh_maker};
+
# merge with master
- %opts = %{ merge(\%opts, $self->_master_connect_info_opts) };
+ %opts = %{ merge(\%opts, \%master_opts) };
# update
$r->[$i] = \%opts;
($result[0]) = ($coderef->(@args));
} else {
$coderef->(@args);
- }
+ }
};
##Reset to the original state
- $self->read_handler($current);
+ $self->read_handler($current);
##Exception testing has to come last, otherwise you might leave the
##read_handler set to master.
if(@_) {
foreach my $source ($self->all_storages) {
$source->debug(@_);
- }
+ }
}
return $self->master->debug;
}
=head2 debugobj
-set a debug object across all storages
+set a debug object
=cut
sub debugobj {
my $self = shift @_;
- if(@_) {
- foreach my $source ($self->all_storages) {
- $source->debugobj(@_);
- }
- }
- return $self->master->debugobj;
+ return $self->master->debugobj(@_);
}
=head2 debugfh
-set a debugfh object across all storages
+set a debugfh object
=cut
sub debugfh {
my $self = shift @_;
- if(@_) {
- foreach my $source ($self->all_storages) {
- $source->debugfh(@_);
- }
- }
- return $self->master->debugfh;
+ return $self->master->debugfh(@_);
}
=head2 debugcb
-set a debug callback across all storages
+set a debug callback
=cut
sub debugcb {
my $self = shift @_;
- if(@_) {
- foreach my $source ($self->all_storages) {
- $source->debugcb(@_);
- }
- }
- return $self->master->debugcb;
+ return $self->master->debugcb(@_);
}
=head2 disconnect
projects / dbsrgits/DBIx-Class.git / blobdiff