Modified the audit log file name and Added deletion of empty file

Author: KeerthanaAP

.gitignore

@@ -19,4 +19,4 @@ bin/
 pvsadm
 
 # audit logfile
-pvsadm.log
+pvsadm_audit.log

cmd/root.go

@@ -80,7 +80,7 @@ func init() {
 	rootCmd.PersistentFlags().StringVarP(&pkg.Options.APIKey, "api-key", "k", "", "IBMCLOUD API Key(env name: IBMCLOUD_API_KEY)")
 	rootCmd.PersistentFlags().StringVar(&pkg.Options.Environment, "env", client.DefaultEnv, "IBM Cloud Environments, supported are: ["+strings.Join(client.ListEnvironments(), ", ")+"]")
 	rootCmd.PersistentFlags().BoolVar(&pkg.Options.Debug, "debug", false, "Enable PowerVS debug option(ATTENTION: dev only option, may print sensitive data from APIs)")
-	rootCmd.PersistentFlags().StringVar(&pkg.Options.AuditFile, "audit-file", "pvsadm.log", "Audit logs for the tool")
+	rootCmd.PersistentFlags().StringVar(&pkg.Options.AuditFile, "audit-file", "pvsadm_audit.log", "Audit logs for the tool")
 	rootCmd.Flags().SortFlags = false
 	rootCmd.PersistentFlags().SortFlags = false
 	_ = rootCmd.Flags().MarkHidden("debug")
@@ -96,11 +96,13 @@ func init() {
 	})
 
 	audit.Logger = audit.New(pkg.Options.AuditFile)
+
 }
 
-func Execute() {
+func Execute() error {
+	defer audit.Delete(pkg.Options.AuditFile)
 	if err := rootCmd.Execute(); err != nil {
-		klog.Errorln(err)
-		os.Exit(1)
+		return err
 	}
+	return nil
 }

main.go

@@ -15,9 +15,16 @@
 package main
 
 import (
+	"os"
+
 	"github.com/ppc64le-cloud/pvsadm/cmd"
+	"k8s.io/klog/v2"
 )
 
 func main() {
-	cmd.Execute()
+	if err := cmd.Execute(); err != nil {
+		klog.Errorln(err)
+		os.Exit(1)
+	}
+
 }

pkg/audit/audit.go

@@ -16,11 +16,12 @@ package audit
 
 import (
 	"encoding/json"
-	"github.com/ppc64le-cloud/pvsadm/pkg"
-	"k8s.io/klog/v2"
 	"os"
 	"sync"
 	"time"
+
+	"github.com/ppc64le-cloud/pvsadm/pkg"
+	"k8s.io/klog/v2"
 )
 
 var Logger *Audit
@@ -70,3 +71,14 @@ func (a *Audit) Log(name, op, value string) {
 	}
 	a.mutex.Unlock()
 }
+
+func Delete(file string) {
+	check_file, err := os.Stat(file)
+	if err != nil {
+		klog.V(2).Infoln(err)
+		return
+	}
+	if check_file.Size() == 0 {
+		os.Remove(file)
+	}
+}