From c338f0a92c56d33d76c55aa522428b5403543368 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Torma=20Krist=C3=B3f?= <tormakristof@tormakristof.eu>
Date: Tue, 2 Apr 2019 22:36:08 +0200
Subject: [PATCH] Create isprime.go

---
 functions/isprime.go | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 functions/isprime.go

diff --git a/functions/isprime.go b/functions/isprime.go
new file mode 100644
index 0000000..9660cf9
--- /dev/null
+++ b/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
+}