// Check if any pending alerts should be removed or fire now. Write out alert timeseries.
    for fp, a := range r.active {
        fmt.Println("S")
        if _, ok := resultFPs[fp]; !ok {
            fmt.Println("HERE1")
            // If the alert was previously firing, keep it around for a given
            // retention time so it is reported as resolved to the AlertManager.
            if a.State == StatePending || (!a.ResolvedAt.IsZero() && ts.Sub(a.ResolvedAt) > resolvedRetention) {
                fmt.Println("HERE2")
                delete(r.active, fp)
            }
            if a.State != StateInactive {
                fmt.Println("HERE3")
                a.State = StateInactive
                a.ResolvedAt = ts
                a.FiredAt = time.Time{}
                fmt.Printf("timeStamp: %v, firedAt %v", a.ResolvedAt, a.FiredAt)
            }
            continue
        }

        if a.State == StatePending && ts.Sub(a.ActiveAt) >= r.holdDuration {
            fmt.Println("HERE4")
            a.State = StateFiring
            a.FiredAt = ts
        }

        // if a.State == StateFiring && ts.Sub(a.ActiveAt) < r.holdDuration {
        //  fmt.Println("HERE7")
        //  a.State = StateInactive
        //  a.FiredAt = ts
        // }

        fmt.Println("HERE5")
        vec = append(vec, r.sample(a, ts))
    }
    fmt.Println("HERE6")
    return vec, nil
}