add time diff to output

main.go

@@ -16,14 +16,17 @@ import (
 	"github.com/vmware/govmomi"
 	"github.com/vmware/govmomi/find"
 	"github.com/vmware/govmomi/view"
+	"github.com/vmware/govmomi/vim25/methods"
 	"github.com/vmware/govmomi/vim25/mo"
+	"github.com/vmware/govmomi/vim25/types"
 )
 
 type HostTimeErrors struct {
-	HostName string
-	HostTime time.Time
-	Cluster  string
-	Vcenter  string
+	HostName      string
+	HostTime      time.Time
+	HostTimeDrift string
+	Cluster       string
+	Vcenter       string
 }
 
 var (
@@ -189,6 +192,30 @@ func main() {
 				continue
 			}
 
+			// test triggering update
+			// Call RefreshDateTimeSystem method using methods.RefreshDateTimeSystem
+			refreshReq := &types.RefreshDateTimeSystem{
+				This: dts.Reference(),
+			}
+			_, err = methods.RefreshDateTimeSystem(ctx, c.Client, refreshReq)
+			if err != nil {
+				log.Printf("Failed to refresh datetime system for host %s: %v", hs.Name, err)
+			} else {
+				//prettyPrint(refreshResp)
+			}
+
+			/*
+				// Call UpdateDateTime method using methods.UpdateDateTime - this will manually set the ESXi clock
+				updateReq := &types.UpdateDateTime{
+					This:     dts.Reference(),
+					DateTime: time.Now().UTC(),
+				}
+				_, err = methods.UpdateDateTime(ctx, c.Client, updateReq)
+				if err != nil {
+					log.Fatal(err)
+				}
+			*/
+
 			// Get the current ESXi time which is UTC
 			hostTime, err := dts.Query(ctx)
 
@@ -212,10 +239,11 @@ func main() {
 				}
 
 				thisResult := HostTimeErrors{
-					HostName: hs.Name,
-					Cluster:  clusterName,
-					Vcenter:  u.Host,
-					HostTime: esxiTimeLocal,
+					HostName:      hs.Name,
+					Cluster:       clusterName,
+					Vcenter:       u.Host,
+					HostTime:      esxiTimeLocal,
+					HostTimeDrift: diff.String(),
 				}
 
 				hostTimeErrors = append(hostTimeErrors, thisResult)