knative-report/functions/isprime.go

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2019-10-02 18:27:25 +02:00
package kubeless
import (
"fmt"
"math"
"strconv"
"github.com/kubeless/kubeless/pkg/functions"
"github.com/sirupsen/logrus"
)
func IsPrime(event functions.Event, context functions.Context) (string, error) {
num, err := strconv.Atoi(event.Data)
if err != nil {
return "", fmt.Errorf("Failed to parse %s as int! %v", event.Data, err)
}
logrus.Infof("Checking if %s is prime", event.Data)
if num <= 1 {
return fmt.Sprintf("%d is not prime", num), nil
}
for i := 2; i <= int(math.Floor(float64(num)/2)); i++ {
if num%i == 0 {
return fmt.Sprintf("%d is not prime", num), nil
}
}
return fmt.Sprintf("%d is prime", num), nil
}