change to use logging instead of print to stdout

utils/token/token.go

@@ -2,6 +2,7 @@ package token
 
 import (
 	"fmt"
+	"log"
 	"os"
 	"strconv"
 	"strings"
@@ -15,7 +16,7 @@ func GenerateToken(user_id uint) (string, error) {
 
 	token_lifespan, err := strconv.Atoi(os.Getenv("TOKEN_HOUR_LIFESPAN"))
 	if err != nil {
-		fmt.Printf("GenerateToken Error getting env value TOKEN_HOUR_LIFESPAN\n")
+		log.Printf("GenerateToken Error getting env value TOKEN_HOUR_LIFESPAN\n")
 		return "", err
 	}
 

utils/utils.go

@@ -6,7 +6,6 @@ import (
 	"crypto/x509"
 	"crypto/x509/pkix"
 	"encoding/pem"
-	"fmt"
 	"log"
 	"math/big"
 	"net"
@@ -25,7 +24,7 @@ func GetFilePath(path string) string {
 
 	// check if filename exists
 	if _, err := os.Stat(path); os.IsNotExist((err)) {
-		fmt.Printf("File '%s' not found, searching in same directory as binary\n", path)
+		log.Printf("File '%s' not found, searching in same directory as binary\n", path)
 		// if not, check that it exists in the same directory as the currently executing binary
 		ex, err2 := os.Executable()
 		if err2 != nil {
@@ -76,7 +75,7 @@ func GenerateCerts(tlsCert string, tlsKey string) {
 
 	// Check that the directory exists
 	relativePath := filepath.Dir(tlsCert)
-	fmt.Printf("GenerateCerts relative path for file creation is '%s'\n", relativePath)
+	log.Printf("GenerateCerts relative path for file creation is '%s'\n", relativePath)
 	_, err = os.Stat(relativePath)
 	if os.IsNotExist(err) {
 		log.Printf("Certificate path does not exist, creating %s before generating certificate\n", relativePath)
@@ -126,13 +125,13 @@ func GenerateCerts(tlsCert string, tlsKey string) {
 	ifaces, err := net.Interfaces()
 
 	if err != nil {
-		fmt.Printf("Error enumerating interfaces: %v\n", err)
+		log.Printf("Error enumerating interfaces: %v\n", err)
 	}
 
 	for _, i := range ifaces {
 		addrs, err := i.Addrs()
 		if err != nil {
-			fmt.Printf("Oops: %v\n", err)
+			log.Printf("Oops: %v\n", err)
 		}
 
 		for _, address := range addrs {