File Coverage

blib/lib/Tapper/Config.pm

Criterion	Covered	Total	%
statement	58	59	98.3
branch	15	22	68.1
condition	6	12	50.0
subroutine	15	15	100.0
pod	2	2	100.0
total	96	110	87.2

package Tapper::Config;
# git description: v5.0.2-1-g2d181a9

our $AUTHORITY = 'cpan:TAPPER';
# ABSTRACT: Tapper - Context sensitive configuration hub for all Tapper libs
$Tapper::Config::VERSION = '5.0.3';
use 5.010;

use strict;
use warnings;

use YAML::Syck;
use File::Slurp         'slurp';
use File::ShareDir      'module_file';
use Hash::Merge    'merge';
use File::ShareDir 'module_file';


# --- The configuration file is lib/auto/Tapper/Config/tapper.yml ---
{
        # closure to forbid direct access to the config hash
        my $Config;



        sub default_merge
        {
                my ($config) = @_;

                no warnings 'uninitialized'; # $ENV{HOME} can be undef

                foreach my $filename ("/etc/tapper.cfg",
                                      $ENV{HOME} ? "$ENV{HOME}/.tapper/tapper.cfg" : '',
                                      "$ENV{TAPPER_CONFIG_FILE}",
                                     )
                {
                        if (-e $filename) {
                                my $new_config;
                                eval { $new_config = LoadFile($filename) };
                                die "Can not load config file '$filename': $@\n" if $@;
                                Hash::Merge::set_behavior( 'RIGHT_PRECEDENT' );
                                $config = merge($config, $new_config);
                                $config->{_last_used_tapper_config_file} = $filename;
                        }
                }
                return $config;
        }

        sub _getenv
        {
                return
                    $ENV{HARNESS_ACTIVE} ? 'test'
                        : $ENV{TAPPER_DEVELOPMENT} ? 'development'
                            : 'live';
        }


        # TODO: automatically recognize context switch
        sub _switch_context
        {
                shift if @_ && $_[0] && $_[0] eq 'Tapper::Config'; # throw away class if called as method

                my $env = shift // _getenv();

                return unless $env =~ /^test|live|development$/;

                my $yaml = slurp module_file('Tapper::Config', 'tapper.yml');
                $Config  = Load($yaml);
                $Config  = default_merge($Config);

                Hash::Merge::set_behavior( 'RIGHT_PRECEDENT' );
                $Config  = merge( $Config, $Config->{$env} );
                $Config  = _prepare_special_entries( $Config );
        }


        sub _prepare_special_entries {
                my ($Config) = @_;

                # Log4Perl: prepend sharedir path
                if (not $Config->{files}{log4perl_cfg} =~ m,^/,) {
                        $Config->{files}{log4perl_cfg} = module_file('Tapper::Config', $Config->{files}{log4perl_cfg});
                }

                # DB config can be overridden triggered by env var
                my $dbms = $ENV{TAPPERDBMS};
                if ($dbms and _getenv ne 'test') {
                        if ($dbms =~ m/^mysql|postgresql$/) {
                                my $val = $Config->{database}{by_TAPPERDBMS}{$dbms}{TestrunDB};
                                $Config->{database}{TestrunDB} = $val if defined $val;
                        } else {
                                die 'Unsupported Tapper DBMS $TAPPERDBMS='.$ENV{TAPPERDBMS};
                        }
                }
                return $Config;
        }

        sub subconfig { $Config }

}

BEGIN { _switch_context() }

1;

__END__