lib/Frey/Storage.pm

package Frey::Storage;
use Moose::Role;

#use YAML::Syck; # XXX doesn't play nice with Continuity
use YAML qw/LoadFile DumpFile/;

=head2 store

  $o->store( 'filename.yml', $data );

=cut

has 'storage_timestamp' => (
        is => 'rw',
        isa => 'HashRef[Int]',
        default => sub { {} },
);

sub store {
        my $self = shift;
        my ( $filename, $data ) = @_;
        $filename .= '.yml';
        DumpFile( $filename, $data );
}

=head2 load

  $data = $o->load( 'filename.yml' );

=cut

sub load {
        my ( $self, $filename ) = @_;
        $filename .= '.yml';
        return if ! -e $filename;
        $self->storage_timestamp->{ $filename } = _path_time( $filename );
        LoadFile( $filename );
}

=head2 reload

Reload file if on-disk copy have changed

  my $new_data = $o->reload( 'filename.yml' );

=cut

sub _path_time {
        (stat( $_[0] ))[9]; # mtime
}

sub reload {
        my ( $self, $filename ) = @_;
        my $path = $filename . '.yml';
        return if ( $self->storage_timestamp->{ $path } == _path_time( $path ) );
        warn "# reload $filename" if $self->debug;
        $self->load( $filename );
}

1;
1	package Frey::Storage;
2	use Moose::Role;
3
4	#use YAML::Syck; # XXX doesn't play nice with Continuity
5	use YAML qw/LoadFile DumpFile/;
6
7	=head2 store
8
9	$o->store( 'filename.yml', $data );
10
11	=cut
12
13	has 'storage_timestamp' => (
14	is => 'rw',
15	isa => 'HashRef[Int]',
16	default => sub { {} },
17	);
18
19	sub store {
20	my $self = shift;
21	my ( $filename, $data ) = @_;
22	$filename .= '.yml';
23	DumpFile( $filename, $data );
24	}
25
26	=head2 load
27
28	$data = $o->load( 'filename.yml' );
29
30	=cut
31
32	sub load {
33	my ( $self, $filename ) = @_;
34	$filename .= '.yml';
35	return if ! -e $filename;
36	$self->storage_timestamp->{ $filename } = _path_time( $filename );
37	LoadFile( $filename );
38	}
39
40	=head2 reload
41
42	Reload file if on-disk copy have changed
43
44	my $new_data = $o->reload( 'filename.yml' );
45
46	=cut
47
48	sub _path_time {
49	(stat( $_[0] ))[9]; # mtime
50	}
51
52	sub reload {
53	my ( $self, $filename ) = @_;
54	my $path = $filename . '.yml';
55	return if ( $self->storage_timestamp->{ $path } == _path_time( $path ) );
56	warn "# reload $filename" if $self->debug;
57	$self->load( $filename );
58	}
59
60	1;