Fix Node.Copy()

.changelog/11744.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+core: Fix missing fields in Node.Copy()
+```

nomad/node_endpoint_test.go

@@ -1531,9 +1531,7 @@ func TestClientEndpoint_GetNode(t *testing.T) {
 	node.StatusUpdatedAt = resp2.Node.StatusUpdatedAt
 	node.SecretID = ""
 	node.Events = resp2.Node.Events
-	if !reflect.DeepEqual(node, resp2.Node) {
-		t.Fatalf("bad: %#v \n %#v", node, resp2.Node)
-	}
+	require.Equal(t, node, resp2.Node)
 
 	// assert that the node register event was set correctly
 	if len(resp2.Node.Events) != 1 {

nomad/structs/structs.go

@@ -2025,20 +2025,20 @@ func (n *Node) Copy() *Node {
 	nn := new(Node)
 	*nn = *n
 	nn.Attributes = helper.CopyMapStringString(nn.Attributes)
-	nn.Resources = nn.Resources.Copy()
-	nn.Reserved = nn.Reserved.Copy()
 	nn.NodeResources = nn.NodeResources.Copy()
 	nn.ReservedResources = nn.ReservedResources.Copy()
+	nn.Resources = nn.Resources.Copy()
+	nn.Reserved = nn.Reserved.Copy()
 	nn.Links = helper.CopyMapStringString(nn.Links)
 	nn.Meta = helper.CopyMapStringString(nn.Meta)
-	nn.Events = copyNodeEvents(n.Events)
 	nn.DrainStrategy = nn.DrainStrategy.Copy()
-	nn.LastDrain = nn.LastDrain.Copy()
+	nn.Events = copyNodeEvents(n.Events)
+	nn.Drivers = copyNodeDrivers(n.Drivers)
 	nn.CSIControllerPlugins = copyNodeCSI(nn.CSIControllerPlugins)
 	nn.CSINodePlugins = copyNodeCSI(nn.CSINodePlugins)
-	nn.Drivers = copyNodeDrivers(n.Drivers)
 	nn.HostVolumes = copyNodeHostVolumes(n.HostVolumes)
 	nn.HostNetworks = copyNodeHostNetworks(n.HostNetworks)
+	nn.LastDrain = nn.LastDrain.Copy()
 	return nn
 }
 
@@ -2657,6 +2657,7 @@ func (n *NetworkResource) Copy() *NetworkResource {
 	}
 	newR := new(NetworkResource)
 	*newR = *n
+	newR.DNS = n.DNS.Copy()
 	if n.ReservedPorts != nil {
 		newR.ReservedPorts = make([]Port, len(n.ReservedPorts))
 		copy(newR.ReservedPorts, n.ReservedPorts)
@@ -2874,8 +2875,7 @@ func (n *NodeResources) Copy() *NodeResources {
 
 	newN := new(NodeResources)
 	*newN = *n
-
-	// Copy the networks
+	newN.Cpu = n.Cpu.Copy()
 	newN.Networks = n.Networks.Copy()
 
 	// Copy the devices
@@ -3062,6 +3062,16 @@ type NodeCpuResources struct {
 	ReservableCpuCores []uint16
 }
 
+func (n NodeCpuResources) Copy() NodeCpuResources {
+	newN := n
+	if n.ReservableCpuCores != nil {
+		newN.ReservableCpuCores = make([]uint16, len(n.ReservableCpuCores))
+		copy(newN.ReservableCpuCores, n.ReservableCpuCores)
+	}
+
+	return newN
+}
+
 func (n *NodeCpuResources) Merge(o *NodeCpuResources) {
 	if o == nil {
 		return

nomad/structs/structs_test.go

@@ -1672,6 +1672,15 @@ func TestNetworkResource_Copy(t *testing.T) {
 		t.Run(tc.name, func(t *testing.T) {
 			output := tc.inputNetworkResource.Copy()
 			assert.Equal(t, tc.inputNetworkResource, output, tc.name)
+
+			if output == nil {
+				return
+			}
+
+			// Assert changes to the copy aren't propagated to the
+			// original
+			output.DNS.Servers[1] = "foo"
+			assert.NotEqual(t, tc.inputNetworkResource, output, tc.name)
 		})
 	}
 }
@@ -5971,6 +5980,31 @@ func TestMultiregion_CopyCanonicalize(t *testing.T) {
 	require.False(old.Diff(nonEmptyOld))
 }
 
+func TestNodeResources_Copy(t *testing.T) {
+	orig := &NodeResources{
+		Cpu: NodeCpuResources{
+			CpuShares:          int64(32000),
+			TotalCpuCores:      32,
+			ReservableCpuCores: []uint16{1, 2, 3, 9},
+		},
+		Memory: NodeMemoryResources{
+			MemoryMB: int64(64000),
+		},
+		Networks: Networks{
+			{
+				Device: "foo",
+			},
+		},
+	}
+
+	kopy := orig.Copy()
+	assert.Equal(t, orig, kopy)
+
+	// Make sure slices aren't shared
+	kopy.Cpu.ReservableCpuCores[1] = 9000
+	assert.NotEqual(t, orig, kopy)
+}
+
 func TestNodeResources_Merge(t *testing.T) {
 	res := &NodeResources{
 		Cpu: NodeCpuResources{