use time.Time for node events for compatibility

api/nodes.go

@@ -212,7 +212,7 @@ type NodeEvent struct {
 	Message     string
 	Subsystem   string
 	Details     map[string]string
-	Timestamp   int64
+	Timestamp   time.Time
 	CreateIndex uint64
 }
 

client/client.go

@@ -1069,7 +1069,7 @@ func (c *Client) updateNodeFromDriver(name string, fingerprint, health *structs.
 					event := &structs.NodeEvent{
 						Subsystem: "Driver",
 						Message:   health.HealthDescription,
-						Timestamp: time.Now().Unix(),
+						Timestamp: time.Now(),
 					}
 					c.triggerNodeEvent(event)
 				}

command/node_status.go

@@ -429,7 +429,7 @@ func (c *NodeStatusCommand) outputNodeEvent(events []*api.NodeEvent) {
 	}
 
 	for i, event := range events {
-		timestamp := formatTime(time.Unix(event.Timestamp, 0))
+		timestamp := formatTime(event.Timestamp)
 		subsystem := event.Subsystem
 		msg := event.Message
 		if c.verbose {

nomad/state/state_store.go

@@ -6,6 +6,7 @@ import (
 	"io"
 	"log"
 	"sort"
+	"time"
 
 	"github.com/hashicorp/go-memdb"
 	multierror "github.com/hashicorp/go-multierror"
@@ -538,7 +539,7 @@ func (s *StateStore) UpsertNode(index uint64, node *structs.Node) error {
 		nodeEvent := &structs.NodeEvent{
 			Message:   "Node Registered",
 			Subsystem: "Cluster",
-			Timestamp: node.StatusUpdatedAt,
+			Timestamp: time.Unix(node.StatusUpdatedAt, 0),
 		}
 		node.Events = []*structs.NodeEvent{nodeEvent}
 		node.CreateIndex = index

nomad/structs/structs.go

@@ -1188,7 +1188,7 @@ type NodeEvent struct {
 	Message     string
 	Subsystem   string
 	Details     map[string]string
-	Timestamp   int64
+	Timestamp   time.Time
 	CreateIndex uint64
 }