lib/Frey/Config.pm

package Frey::Config;
use Moose::Role;

use YAML qw/LoadFile/;
use Hash::Merge qw/merge/;
use Data::Dump qw/dump/;

=head1 NAME

Frey::Config - read configuration YAML files

=head1 SYNOPSYS

  Foo::Bar->config->{'baz'}  == 42

If C<etc/site_config.yml> or C<etc/config.yml> have:

  'Foo::Bar':
    baz: 42

or C<etc/Foo/Bar.yml> has

  baz: 42

You can also force config re-load with

  Foo::Bar->load_config('custom');

which will load C<etc/custom.yml> as most specific
configuration.

=cut

our %config;

sub load_config {
        my $self = shift;
        foreach my $name ( 'config', 'site_config', ref($self), @_ ) {
                my $path = "etc/$name.yml";
                if ( $path =~ s{::}{/}g ) {
                        # load under Package name
                        %config = %{ merge( { ref($self) => LoadFile($path) }, \%config ) } if -e $path;
                } else {
                        %config = %{ merge( LoadFile($path) , \%config ) } if -e $path;
                }
                warn "## $path current config = ",dump( %config ) if $self->debug;
        }
}

sub config {
        my $self = shift;
        my $key = shift || ref($self);
        warn "## config $key" if $self->debug;
        $self->load_config unless defined %config;
        confess "$key doesn't exist in config" unless defined $config{ $key };
        return $config{ $key };
}

1;
1	dpavlin	221	package Frey::Config;
2			use Moose::Role;
3
4			use YAML qw/LoadFile/;
5			use Hash::Merge qw/merge/;
6			use Data::Dump qw/dump/;
7
8			=head1 NAME
9
10			Frey::Config - read configuration YAML files
11
12			=head1 SYNOPSYS
13
14			Foo::Bar->config->{'baz'} == 42
15
16			If C<etc/site_config.yml> or C<etc/config.yml> have:
17
18			'Foo::Bar':
19			baz: 42
20
21			or C<etc/Foo/Bar.yml> has
22
23			baz: 42
24
25			You can also force config re-load with
26
27			Foo::Bar->load_config('custom');
28
29			which will load C<etc/custom.yml> as most specific
30			configuration.
31
32			=cut
33
34			our %config;
35
36			sub load_config {
37			my $self = shift;
38			foreach my $name ( 'config', 'site_config', ref($self), @_ ) {
39			my $path = "etc/$name.yml";
40			if ( $path =~ s{::}{/}g ) {
41			# load under Package name
42			%config = %{ merge( { ref($self) => LoadFile($path) }, \%config ) } if -e $path;
43			} else {
44			%config = %{ merge( LoadFile($path) , \%config ) } if -e $path;
45			}
46			warn "## $path current config = ",dump( %config ) if $self->debug;
47			}
48			}
49
50			sub config {
51			my $self = shift;
52			my $key = shift \|\| ref($self);
53			warn "## config $key" if $self->debug;
54			$self->load_config unless defined %config;
55			confess "$key doesn't exist in config" unless defined $config{ $key };
56			return $config{ $key };
57			}
58
59			1;