ParallelForkManager

use HTTP::Server::PSGI;

use Parallel::ForkManager;
use Prometheus::Tiny::Shared;
use Time::HiRes qw( gettimeofday tv_interval );
my $prom = Prometheus::Tiny::Shared->new;
my $fork_manager = Parallel::ForkManager->new(1 );
$fork_manager->start_child("metrics_exporter", sub {
    my $server = HTTP::Server::PSGI->new(
        host => "127.0.0.1",
        port => 9091,
        timeout => 5,
    );

    $server->run($prom->psgi);
});

    my $channelName = $event->{'channel_name'};

        $prom->inc("notify_plugin_executions", { channel => $channelName, plugin => ref $plugin });

            my $startTime = [gettimeofday()];

            $prom->histogram_observe("notify_plugin_runtime", tv_interval($startTime), { channel => $channelName, plugin => ref $plugin });
            $prom->inc("notify_plugin_success", { channel => $channelName, plugin => ref $plugin });

            $prom->inc("notify_plugin_error", { channel => $channelName, plugin => ref $plugin });

    $prom->inc("event_loop_iterations");

        $prom->set("event_received", time());

        $prom->inc("notify_event", { channel => $channelName });

            $prom->inc("notify_event_error", { channel => $channelName });