Add network stats for node interfaces

pkg/kubelet/winstats/perfcounter_nodestats.go

@@ -101,8 +101,13 @@ func (p *perfCounterNodeStatsClient) startMonitoring() error {
 		return err
 	}
 
+	networkAdapterCounter, err := newNetworkCounters()
+	if err != nil {
+		return err
+	}
+
 	go wait.Forever(func() {
-		p.collectMetricsData(cpuCounter, memWorkingSetCounter, memCommittedBytesCounter)
+		p.collectMetricsData(cpuCounter, memWorkingSetCounter, memCommittedBytesCounter, networkAdapterCounter)
 	}, perfCounterUpdatePeriod)
 
 	return nil
@@ -138,7 +143,7 @@ func (p *perfCounterNodeStatsClient) getNodeInfo() nodeInfo {
 	return p.nodeInfo
 }
 
-func (p *perfCounterNodeStatsClient) collectMetricsData(cpuCounter, memWorkingSetCounter, memCommittedBytesCounter *perfCounter) {
+func (p *perfCounterNodeStatsClient) collectMetricsData(cpuCounter, memWorkingSetCounter, memCommittedBytesCounter *perfCounter, networkAdapterCounter *networkCounter) {
 	cpuValue, err := cpuCounter.getData()
 	if err != nil {
 		klog.Errorf("Unable to get cpu perf counter data; err: %v", err)
@@ -157,12 +162,19 @@ func (p *perfCounterNodeStatsClient) collectMetricsData(cpuCounter, memWorkingSe
 		return
 	}
 
+	networkAdapterStats, err := networkAdapterCounter.getData()
+	if err != nil {
+		klog.Errorf("Unable to get network adapter perf counter data; err: %v", err)
+		return
+	}
+
 	p.mu.Lock()
 	defer p.mu.Unlock()
 	p.nodeMetrics = nodeMetrics{
 		cpuUsageCoreNanoSeconds:   p.convertCPUValue(cpuValue),
 		memoryPrivWorkingSetBytes: memWorkingSetValue,
 		memoryCommittedBytes:      memCommittedBytesValue,
+		interfaceStats:            networkAdapterStats,
 		timeStamp:                 time.Now(),
 	}
 }

pkg/kubelet/winstats/perfcounters.go

@@ -71,6 +71,7 @@ func newPerfCounter(counter string) (*perfCounter, error) {
 	}, nil
 }
 
+// getData is used for getting data without * in counter name.
 func (p *perfCounter) getData() (uint64, error) {
 	ret := win_pdh.PdhCollectQueryData(p.queryHandle)
 	if ret != win_pdh.ERROR_SUCCESS {
@@ -100,3 +101,36 @@ func (p *perfCounter) getData() (uint64, error) {
 
 	return data, nil
 }
+
+// getData is used for getting data with * in counter name.
+func (p *perfCounter) getDataList() (map[string]uint64, error) {
+	ret := win_pdh.PdhCollectQueryData(p.queryHandle)
+	if ret != win_pdh.ERROR_SUCCESS {
+		return nil, fmt.Errorf("unable to collect data from counter. Error code is %x", ret)
+	}
+
+	var bufSize, bufCount uint32
+	var size = uint32(unsafe.Sizeof(win_pdh.PDH_FMT_COUNTERVALUE_ITEM_DOUBLE{}))
+	var emptyBuf [1]win_pdh.PDH_FMT_COUNTERVALUE_ITEM_DOUBLE // need at least 1 addressable null ptr.
+	data := map[string]uint64{}
+
+	ret = win_pdh.PdhGetFormattedCounterArrayDouble(p.counterHandle, &bufSize, &bufCount, &emptyBuf[0])
+	if ret != win_pdh.PDH_MORE_DATA {
+		return nil, fmt.Errorf("unable to collect data from counter. Error code is %x", ret)
+	}
+
+	filledBuf := make([]win_pdh.PDH_FMT_COUNTERVALUE_ITEM_DOUBLE, bufCount*size)
+	ret = win_pdh.PdhGetFormattedCounterArrayDouble(p.counterHandle, &bufSize, &bufCount, &filledBuf[0])
+	if ret != win_pdh.ERROR_SUCCESS {
+		return nil, fmt.Errorf("unable to collect data from counter. Error code is %x", ret)
+	}
+
+	for i := 0; i < int(bufCount); i++ {
+		c := filledBuf[i]
+		value := uint64(c.FmtValue.DoubleValue)
+		name := win_pdh.UTF16PtrToString(c.SzName)
+		data[name] = value
+	}
+
+	return data, nil
+}

pkg/kubelet/winstats/winstats.go

@@ -58,6 +58,7 @@ type nodeMetrics struct {
 	memoryPrivWorkingSetBytes uint64
 	memoryCommittedBytes      uint64
 	timeStamp                 time.Time
+	interfaceStats            []cadvisorapi.InterfaceStats
 }
 
 type nodeInfo struct {
@@ -109,12 +110,11 @@ func (c *StatsClient) WinVersionInfo() (*cadvisorapi.VersionInfo, error) {
 
 func (c *StatsClient) createRootContainerInfo() (*cadvisorapiv2.ContainerInfo, error) {
 	nodeMetrics, err := c.client.getNodeMetrics()
-
 	if err != nil {
 		return nil, err
 	}
-	var stats []*cadvisorapiv2.ContainerStats
 
+	var stats []*cadvisorapiv2.ContainerStats
 	stats = append(stats, &cadvisorapiv2.ContainerStats{
 		Timestamp: nodeMetrics.timeStamp,
 		Cpu: &cadvisorapi.CpuStats{
@@ -126,6 +126,9 @@ func (c *StatsClient) createRootContainerInfo() (*cadvisorapiv2.ContainerInfo, e
 			WorkingSet: nodeMetrics.memoryPrivWorkingSetBytes,
 			Usage:      nodeMetrics.memoryCommittedBytes,
 		},
+		Network: &cadvisorapiv2.NetworkStats{
+			Interfaces: nodeMetrics.interfaceStats,
+		},
 	})
 
 	nodeInfo := c.client.getNodeInfo()
@@ -134,6 +137,7 @@ func (c *StatsClient) createRootContainerInfo() (*cadvisorapiv2.ContainerInfo, e
 			CreationTime: nodeInfo.startTime,
 			HasCpu:       true,
 			HasMemory:    true,
+			HasNetwork:   true,
 			Memory: cadvisorapiv2.MemorySpec{
 				Limit: nodeInfo.memoryPhysicalCapacityBytes,
 			},

pkg/kubelet/winstats/winstats_test.go

@@ -88,6 +88,7 @@ func TestWinContainerInfos(t *testing.T) {
 		Spec: cadvisorapiv2.ContainerSpec{
 			HasCpu:     true,
 			HasMemory:  true,
+			HasNetwork: true,
 			Memory: cadvisorapiv2.MemorySpec{
 				Limit: 1.6e+10,
 			},
@@ -95,7 +96,11 @@ func TestWinContainerInfos(t *testing.T) {
 		Stats: stats,
 	}
 
-	assert.Equal(t, actualRootInfos, infos)
+	assert.Equal(t, len(actualRootInfos), len(infos))
+	assert.Equal(t, actualRootInfos["/"].Spec, infos["/"].Spec)
+	assert.Equal(t, len(actualRootInfos["/"].Stats), len(infos["/"].Stats))
+	assert.Equal(t, actualRootInfos["/"].Stats[0].Cpu, infos["/"].Stats[0].Cpu)
+	assert.Equal(t, actualRootInfos["/"].Stats[0].Memory, infos["/"].Stats[0].Memory)
 }
 
 func TestWinMachineInfo(t *testing.T) {