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 throw_exception
  15 {
  16 }
  17
  18 sub exception_action
  19 {
  20     my $self = shift;
  21 #    print STDERR Carp::longmess;
  22
  23     $self->next::method(@_);
  24 }
  25
  26 # sub load_classes
  27 # {
  28 #     my $class = shift;
  29
  30
  31 #     $class->next::method(@_);
  32
  33 # }
  34
  35 sub connection
  36 {
  37     my $self = shift;
  38     $self->next::method(@_);
  39
  40 #   print STDERR join(":", $self->sources), "\n";
  41
  42     my $journal_schema;
  43     if(!defined($self->journal_connection))
  44     {
  45         ## If no connection, use the same schema/storage etc as the user
  46         DBIx::Class::Componentised->inject_base(ref $self, 'DBIx::Class::Schema::Journal::DB');
  47           $journal_schema = $self;
  48     }
  49     else
  50     {
  51         $journal_schema = DBIx::Class::Schema::Journal::DB->connect(@{ $self->journal_connection });
  52         if($self->journal_storage_type)
  53         {
  54             $journal_schema->storage_type($self->journal_storage_type);
  55         }
  56     }
  57
  58     ## get our own private version of the journaling sources
  59    $self->_journal_schema($journal_schema->compose_namespace(blessed($self) . '::Journal'));
  60
  61     ## Create auditlog+history per table
  62     my %j_sources = @{$self->journal_sources} ? map { $_ => 1 } @{$self->journal_sources} : map { $_ => 1 } $self->sources;
  63     foreach my $s_name ($self->sources)
  64     {
  65         next unless($j_sources{$s_name});
  66         $self->create_journal_for($s_name);
  67         $self->class($s_name)->load_components('Journal');
  68 #        print STDERR "$s_name :", $self->class($s_name), "\n";
  69     }
  70
  71     ## Set up relationship between changeset->user_id and this schema's user
  72     if(!@{$self->journal_user})
  73     {
  74         warn "No Journal User set!";
  75         return;
  76     }
  77
  78     $self->_journal_schema->deploy();
  79     $self->_journal_schema->class('ChangeSet')->belongs_to('user', @{$self->journal_user});
  80     $self->_journal_schema->storage->disconnect();
  81 }
  82
  83 sub get_audit_log_class_name
  84 {
  85     my ($self, $sourcename) = @_;
  86
  87     return blessed($self->_journal_schema) . "::${sourcename}AuditLog";
  88 }
  89
  90 sub get_audit_history_class_name
  91 {
  92     my ($self, $sourcename) = @_;
  93
  94     return blessed($self->_journal_schema) . "::${sourcename}AuditHistory";
  95 }
  96
  97 sub create_journal_for
  98 {
  99     my ($self, $s_name) = @_;
 100
 101     my $source = $self->source($s_name);
 102     my $newclass = $self->get_audit_log_class_name($s_name);
 103     DBIx::Class::Componentised->inject_base($newclass, 'DBIx::Class::Schema::Journal::DB::AuditLog');
 104     $newclass->table(lc($s_name) . "_audit_log");
 105     $self->_journal_schema->register_class("${s_name}AuditLog", $newclass);
 106
 107
 108     my $histclass = $self->get_audit_history_class_name($s_name);
 109     DBIx::Class::Componentised->inject_base($histclass, 'DBIx::Class::Schema::Journal::DB::AuditHistory');
 110     $histclass->table(lc($s_name) . "_audit_history");
 111 #    $histclass->result_source_instance->name(lc($s_name) . "_audit_hisory");
 112     $histclass->add_columns(
 113                             map { $_ => $source->column_info($_) } $source->columns
 114                            );
 115
 116     $self->_journal_schema->register_class("${s_name}AuditHistory", $histclass);
 117 }
 118
 119 sub txn_do
 120 {
 121     my ($self, $code) = @_;
 122
 123     ## Create a new changeset, then run $code as a transaction
 124     my $cs = $self->_journal_schema->resultset('ChangeSet');
 125
 126     $self->txn_begin;
 127     my $changeset = $cs->create({ ( $self->_journal_schema->current_user() ? ( user_id => $self->_journal_schema->current_user()) : () ),
 128 #        user_id => $self->_journal_schema->current_user(),
 129         session_id => $self->_journal_schema->current_session(),
 130     });
 131     $self->_journal_schema->current_changeset($changeset->ID);
 132
 133     $self->next::method($code);
 134 }
 135
 136 1;