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 debug { 1 };

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 "## load_config $path current config = ",dump( %config ) if $self->debug;
        }
}

sub config {
        my ( $self, $key ) = @_;
        $key ||= ref($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 unless defined $config{ $key };
        return $config{ $key };
}

1;
1	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 debug { 1 };
37
38	sub load_config {
39	my $self = shift;
40	foreach my $name ( 'config', 'site_config', ref($self), @_ ) {
41	my $path = "etc/$name.yml";
42	if ( $path =~ s{::}{/}g ) {
43	# load under Package name
44	%config = %{ merge( { ref($self) => LoadFile($path) }, \%config ) } if -e $path;
45	} else {
46	%config = %{ merge( LoadFile($path) , \%config ) } if -e $path;
47	}
48	warn "## load_config $path current config = ",dump( %config ) if $self->debug;
49	}
50	}
51
52	sub config {
53	my ( $self, $key ) = @_;
54	$key \|\|= ref($self);
55	warn "## config $key" if $self->debug;
56	$self->load_config unless defined %config;
57	#confess "$key doesn't exist in config" unless defined $config{ $key };
58	return unless defined $config{ $key };
59	return $config{ $key };
60	}
61
62	1;