Create isprime.go

functions/isprime.go

@@ -0,0 +1,27 @@
+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
+}