use Net::Prometheus;

sub prometheus : Chained('job') PathPart('prometheus') Args(0) {
    my ($self, $c) = @_;
    my $job = $c->stash->{job};
    my $prometheus = Net::Prometheus->new;

    my $lastBuild = $job->builds->find(
        { finished => 1 },
        { order_by => 'id DESC', rows => 1, columns => [@buildListColumns] }
    );
    $prometheus->new_counter(
        name => "hydra_job_completion_time",
        help => "The most recent job's completion time",
        labels => [ "project", "jobset", "job", "nixname" ]
    )->labels(
        $c->stash->{project}->name,
        $c->stash->{jobset}->name,
        $c->stash->{job}->name,
        $lastBuild->nixname,
    )->inc($lastBuild->stoptime);
    $prometheus->new_gauge(
        name => "hydra_job_failed",
        help => "Record if the most recent version of this job failed (1 means failed)",
        labels => [ "project", "jobset", "job", "nixname" ]
    )->labels(
        $c->stash->{project}->name,
        $c->stash->{jobset}->name,
        $c->stash->{job}->name,
        $lastBuild->nixname,
    )->inc($lastBuild->stoptime >= 0);
    $c->stash->{'plain'} = { data => $prometheus->render };
    $c->forward('Hydra::View::Plain');
}