From 8ac14989061078084165fce775cc977227bf9e39 Mon Sep 17 00:00:00 2001
From: Ted Yu <yuzhihong@gmail.com>
Date: Fri, 10 Apr 2020 09:21:18 -0700
Subject: [PATCH] Make a copy of MachineInfo in GetMachineInfo()

Signed-off-by: Ted Yu <yuzhihong@gmail.com>
---
 machine/topology_test.go | 20 ++++++++++++++------
 manager/manager.go       | 22 +++++++++++++++++++++-
 2 files changed, 35 insertions(+), 7 deletions(-)

diff --git a/machine/topology_test.go b/machine/topology_test.go
index b38562af728..c660c165607 100644
--- a/machine/topology_test.go
+++ b/machine/topology_test.go
@@ -252,10 +252,12 @@ func TestTopologyWithoutNodes(t *testing.T) {
 	assert.Equal(t, 2, len(topology))
 	assert.Equal(t, 4, numCores)
 
-	topologyJSON, err := json.Marshal(topology)
+	topologyJSON1, err := json.Marshal(topology[0])
+	assert.Nil(t, err)
+	topologyJSON2, err := json.Marshal(topology[1])
 	assert.Nil(t, err)
 
-	expectedTopology := `[
+	expectedTopology1 := `
 		{
 			"node_id":0,
 			"memory":0,
@@ -277,7 +279,8 @@ func TestTopologyWithoutNodes(t *testing.T) {
 				}
 			],
 			"caches":null
-		},
+		}`
+	expectedTopology2 := `
 		{
 			"node_id":1,
 			"memory":0,
@@ -299,9 +302,14 @@ func TestTopologyWithoutNodes(t *testing.T) {
 				}
 			],
 			"caches":null
-		}
-	]`
-	assert.JSONEq(t, expectedTopology, string(topologyJSON))
+		}`
+
+	if expectedTopology1 == string(topologyJSON1) {
+		assert.JSONEq(t, expectedTopology2, string(topologyJSON2))
+	} else {
+		assert.JSONEq(t, expectedTopology2, string(topologyJSON1))
+		assert.JSONEq(t, expectedTopology1, string(topologyJSON2))
+	}
 }
 
 func TestTopologyWithNodesWithoutCPU(t *testing.T) {
diff --git a/manager/manager.go b/manager/manager.go
index ee3444d3bfa..abb7367e736 100644
--- a/manager/manager.go
+++ b/manager/manager.go
@@ -793,7 +793,27 @@ func (m *manager) GetMachineInfo() (*info.MachineInfo, error) {
 	m.machineMu.RLock()
 	defer m.machineMu.RUnlock()
 	// Copy and return the MachineInfo.
-	return &m.machineInfo, nil
+	copy := info.MachineInfo{
+		NumCores:         m.machineInfo.NumCores,
+		NumPhysicalCores: m.machineInfo.NumPhysicalCores,
+		NumSockets:       m.machineInfo.NumSockets,
+		CpuFrequency:     m.machineInfo.CpuFrequency,
+		MemoryCapacity:   m.machineInfo.MemoryCapacity,
+		MemoryByType:     m.machineInfo.MemoryByType,
+		NVMInfo:          m.machineInfo.NVMInfo,
+		HugePages:        m.machineInfo.HugePages,
+		MachineID:        m.machineInfo.MachineID,
+		SystemUUID:       m.machineInfo.SystemUUID,
+		BootID:           m.machineInfo.BootID,
+		Filesystems:      m.machineInfo.Filesystems,
+		DiskMap:          m.machineInfo.DiskMap,
+		NetworkDevices:   m.machineInfo.NetworkDevices,
+		Topology:         m.machineInfo.Topology,
+		CloudProvider:    m.machineInfo.CloudProvider,
+		InstanceType:     m.machineInfo.InstanceType,
+		InstanceID:       m.machineInfo.InstanceID,
+	}
+	return &copy, nil
 }
 
 func (m *manager) GetVersionInfo() (*info.VersionInfo, error) {