lib/DBIx/Class/Schema/Journal.pm

   1 package DBIx::Class::Schema::Journal;
   2
   3 use base qw/DBIx::Class/;
   4
   5 use Scalar::Util 'blessed';
   6 use DBIx::Class::Schema::Journal::DB;
   7
   8 __PACKAGE__->mk_classdata('journal_storage_type');
   9 __PACKAGE__->mk_classdata('journal_connection');
  10 __PACKAGE__->mk_classdata('journal_sources'); ## [ source names ]
  11 __PACKAGE__->mk_classdata('journal_user'); ## [ class, field for user id ]
  12 __PACKAGE__->mk_classdata('_journal_schema');
  13
  14 sub connection
  15 {
  16     my $self = shift;
  17     $self->next::method(@_);
  18
  19     my $journal_schema = (__PACKAGE__ . '::DB')->connect($self->journal_connection || $self->storage->connect_info);
  20     if($self->journal_storage_type)
  21     {
  22         $journal_schema->storage_type($self->journal_storage_type);
  23     }
  24
  25     ## get our own private version of the journaling sources
  26     $self->_journal_schema($journal_schema->compose_namespace(blessed($self) . '::Journal'));
  27
  28     ## Create auditlog+history per table
  29     my %j_sources = @{$self->journal_sources} ? map { $_ => 1 } @{$self->journal_sources} : map { $_ => 1 } $self->sources;
  30     foreach my $s_name ($self->sources)
  31     {
  32         next unless($j_sources{$s_name});
  33         $self->create_journal_for($s_name);
  34         $self->source($s_name)->load_component('Journal');
  35     }
  36
  37     ## Set up relationship between changeset->user_id and this schema's user
  38     if(!@{$self->journal_user})
  39     {
  40         warn "No Journal User set!";
  41         return;
  42     }
  43
  44     $self->_journal_schema->source('ChangeSet')->belongs_to('user', @{$self->journal_user});
  45 }
  46
  47 sub get_audit_log_class_name
  48 {
  49     my ($self, $sourcename) = @_;
  50
  51     return blessed($self->_journal_schema) . "::${sourcename}AuditLog";
  52 }
  53
  54 sub get_audit_history_class_name
  55 {
  56     my ($self, $sourcename) = @_;
  57
  58     return blessed($self->_journal_schema) . "::${sourcename}AuditHistory";
  59 }
  60
  61 sub create_journal_for
  62 {
  63     my ($self, $s_name) = @_;
  64
  65     my $source = $self->source($s_name);
  66     my $newclass = $self->get_audit_log_class_name($s_name);
  67     DBIx::Class::Componentised->inject_base($newclass, 'DBIx::Class::Schema::Journal::DB::AuditLog');
  68 #    $newclass->table(lc($s_name) . "_audit_log");
  69     $newclass->result_source_instance->name(lc($s_name) . "_audit_log");
  70
  71
  72     my $histclass = $self->get_audit_hisory_class_name($s_name);
  73     DBIx::Class::Componentised->inject_base($histclass, 'DBIx::Class::Schema::Journal::DB::AuditHistory');
  74     $histclass->result_source_instance->name(lc($s_name) . "_audit_hisory");
  75     $histclass->add_columns(
  76                             map { $_ => $source->column_info($_) } $source->columns
  77                            );
  78
  79 }
  80
  81 sub create_changeset
  82 {
  83     my ($self, $code) = @_;
  84
  85     ## Create a new changeset, then run $code as a transaction
  86     my $cs = $self->result_source->schema->_journal_schema->resultset('ChangeSet');
  87     my $changeset = $cs->create({
  88         user_id => $self->result_source->schema->_journal_schema->current_user(),
  89         session_id => $self->result_source->schema->_journal_schema->current_session(),
  90     });
  91     $self->result_source->schema->_journal_schema->current_changeset($changeset->ID);
  92
  93     $self->txn_do($code);
  94 }
  95
  96 1;