travelynx/lib/Travelynx/Command/munin.pm

package Travelynx::Command::munin;
use Mojo::Base 'Mojolicious::Command';

use DateTime;

has description => 'Generate statistics for munin-node';

has usage => sub { shift->extract_usage };

sub query_to_munin {
	my ( $label, $value ) = @_;

	if ( defined $value ) {
		printf( "%s.value %d\n", $label, $value );
	}
}

sub run {
	my ( $self, $filename ) = @_;

	my $db = $self->app->pg->db;

	my $now = DateTime->now( time_zone => 'Europe/Berlin' );

	my $checkin_window_query
	  = qq{select count(*) as count from journeys where checkin_time > to_timestamp(?);};

	query_to_munin( 'reg_user_count',
		$db->select( 'users', 'count(*) as count', { status => 1 } )
		  ->hash->{count} );
	query_to_munin(
		'checkins_24h',
		$db->query( $checkin_window_query,
			$now->subtract( hours => 24 )->epoch )->hash->{count}
	);
	query_to_munin( 'checkins_7d',
		$db->query( $checkin_window_query, $now->subtract( days => 7 )->epoch )
		  ->hash->{count} );
	query_to_munin(
		'checkins_30d',
		$db->query(
			$checkin_window_query, $now->subtract( days => 30 )->epoch
		)->hash->{count}
	);
}

1;

__END__

=head1 SYNOPSIS

  Usage: index.pl munin

  Write statistics for munin-node to stdout