gracefull shutdown for unresolvable errors

utils/get_structs_list.go

@@ -1,32 +1,36 @@
 package utils
 
 import (
-    "bufio"
-    "os"
-    "strings"
+	"bufio"
+	"log"
+	"os"
+	"strings"
 )
 
-func GetStructList(filePath string) ([]string) {
-    file, err := os.Open(filePath)
-    if err != nil {
-		panic(err)
-    }
-    defer file.Close()
-    var structNames []string
-    s := bufio.NewScanner(file)
-    for s.Scan() {
-        line := s.Text()
-        if strings.Contains(line, "type ") && strings.Contains(line, " struct") {
-            start := strings.Index(line, "type ") + 5
-            end := strings.Index(line, " struct")
-            name := strings.TrimSpace(line[start:end])
-            if name != "" {
-                structNames = append(structNames, name)
-            }
-        }
-    }
-    if err := s.Err(); err != nil {
-        panic(err)
-    }
-    return structNames
-}
+func GetStructList(filePath string) []string {
+	file, err := os.Open(filePath)
+	defer file.Close()
+	if err != nil {
+		log.Fatalf("Failed to open a file: %s", err)
+	}
+
+	var structNames []string
+	s := bufio.NewScanner(file)
+	for s.Scan() {
+		line := s.Text()
+		if strings.Contains(line, "type ") && strings.Contains(line, " struct") {
+			start := strings.Index(line, "type ") + 5
+			end := strings.Index(line, " struct")
+			name := strings.TrimSpace(line[start:end])
+			if name != "" {
+				structNames = append(structNames, name)
+			}
+		}
+	}
+
+	if s.Err() != nil {
+		log.Fatalf("")
+	}
+
+	return structNames
+}