Add generated file

This PR adds generated files under pkg/client and vendor folder.

vendor/k8s.io/kubernetes/pkg/kubelet/winstats/perfcounter_nodestats.go

@@ -0,0 +1,200 @@
+// +build windows
+
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package winstats
+
+import (
+	"errors"
+	"os"
+	"runtime"
+	"sync"
+	"time"
+	"unsafe"
+
+	"github.com/golang/glog"
+	cadvisorapi "github.com/google/cadvisor/info/v1"
+	"golang.org/x/sys/windows"
+	"k8s.io/apimachinery/pkg/util/wait"
+)
+
+// MemoryStatusEx is the same as Windows structure MEMORYSTATUSEX
+// https://msdn.microsoft.com/en-us/library/windows/desktop/aa366770(v=vs.85).aspx
+type MemoryStatusEx struct {
+	Length               uint32
+	MemoryLoad           uint32
+	TotalPhys            uint64
+	AvailPhys            uint64
+	TotalPageFile        uint64
+	AvailPageFile        uint64
+	TotalVirtual         uint64
+	AvailVirtual         uint64
+	AvailExtendedVirtual uint64
+}
+
+var (
+	modkernel32              = windows.NewLazySystemDLL("kernel32.dll")
+	procGlobalMemoryStatusEx = modkernel32.NewProc("GlobalMemoryStatusEx")
+)
+
+// NewPerfCounterClient creates a client using perf counters
+func NewPerfCounterClient() (Client, error) {
+	return newClient(&perfCounterNodeStatsClient{})
+}
+
+// perfCounterNodeStatsClient is a client that provides Windows Stats via PerfCounters
+type perfCounterNodeStatsClient struct {
+	nodeMetrics
+	mu sync.RWMutex // mu protects nodeMetrics
+	nodeInfo
+}
+
+func (p *perfCounterNodeStatsClient) startMonitoring() error {
+	memory, err := getPhysicallyInstalledSystemMemoryBytes()
+	if err != nil {
+		return err
+	}
+
+	kernelVersion, err := getKernelVersion()
+	if err != nil {
+		return err
+	}
+
+	osImageVersion, err := getOSImageVersion()
+	if err != nil {
+		return err
+	}
+
+	p.nodeInfo = nodeInfo{
+		kernelVersion:               kernelVersion,
+		osImageVersion:              osImageVersion,
+		memoryPhysicalCapacityBytes: memory,
+		startTime:                   time.Now(),
+	}
+
+	cpuCounter, err := newPerfCounter(cpuQuery)
+	if err != nil {
+		return err
+	}
+
+	memWorkingSetCounter, err := newPerfCounter(memoryPrivWorkingSetQuery)
+	if err != nil {
+		return err
+	}
+
+	memCommittedBytesCounter, err := newPerfCounter(memoryCommittedBytesQuery)
+	if err != nil {
+		return err
+	}
+
+	go wait.Forever(func() {
+		p.collectMetricsData(cpuCounter, memWorkingSetCounter, memCommittedBytesCounter)
+	}, perfCounterUpdatePeriod)
+
+	return nil
+}
+
+func (p *perfCounterNodeStatsClient) getMachineInfo() (*cadvisorapi.MachineInfo, error) {
+	hostname, err := os.Hostname()
+	if err != nil {
+		return nil, err
+	}
+
+	return &cadvisorapi.MachineInfo{
+		NumCores:       runtime.NumCPU(),
+		MemoryCapacity: p.nodeInfo.memoryPhysicalCapacityBytes,
+		MachineID:      hostname,
+	}, nil
+}
+
+func (p *perfCounterNodeStatsClient) getVersionInfo() (*cadvisorapi.VersionInfo, error) {
+	return &cadvisorapi.VersionInfo{
+		KernelVersion:      p.nodeInfo.kernelVersion,
+		ContainerOsVersion: p.nodeInfo.osImageVersion,
+	}, nil
+}
+
+func (p *perfCounterNodeStatsClient) getNodeMetrics() (nodeMetrics, error) {
+	p.mu.RLock()
+	defer p.mu.RUnlock()
+	return p.nodeMetrics, nil
+}
+
+func (p *perfCounterNodeStatsClient) getNodeInfo() nodeInfo {
+	return p.nodeInfo
+}
+
+func (p *perfCounterNodeStatsClient) collectMetricsData(cpuCounter, memWorkingSetCounter, memCommittedBytesCounter *perfCounter) {
+	cpuValue, err := cpuCounter.getData()
+	if err != nil {
+		glog.Errorf("Unable to get cpu perf counter data; err: %v", err)
+		return
+	}
+
+	memWorkingSetValue, err := memWorkingSetCounter.getData()
+	if err != nil {
+		glog.Errorf("Unable to get memWorkingSet perf counter data; err: %v", err)
+		return
+	}
+
+	memCommittedBytesValue, err := memCommittedBytesCounter.getData()
+	if err != nil {
+		glog.Errorf("Unable to get memCommittedBytes 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,
+		timeStamp:                 time.Now(),
+	}
+}
+
+func (p *perfCounterNodeStatsClient) convertCPUValue(cpuValue uint64) uint64 {
+	cpuCores := runtime.NumCPU()
+	// This converts perf counter data which is cpu percentage for all cores into nanoseconds.
+	// The formula is (cpuPercentage / 100.0) * #cores * 1e+9 (nano seconds). More info here:
+	// https://github.com/kubernetes/heapster/issues/650
+	newValue := p.nodeMetrics.cpuUsageCoreNanoSeconds + uint64((float64(cpuValue)/100.0)*float64(cpuCores)*1e9)
+	return newValue
+}
+
+func getPhysicallyInstalledSystemMemoryBytes() (uint64, error) {
+	// We use GlobalMemoryStatusEx instead of GetPhysicallyInstalledSystemMemory
+	// on Windows node for the following reasons:
+	// 1. GetPhysicallyInstalledSystemMemory retrieves the amount of physically
+	// installed RAM from the computer's SMBIOS firmware tables.
+	// https://msdn.microsoft.com/en-us/library/windows/desktop/cc300158(v=vs.85).aspx
+	// On some VM, it is unable to read data from SMBIOS and fails with ERROR_INVALID_DATA.
+	// 2. On Linux node, total physical memory is read from MemTotal in /proc/meminfo.
+	// GlobalMemoryStatusEx returns the amount of physical memory that is available
+	// for the operating system to use. The amount returned by GlobalMemoryStatusEx
+	// is closer in parity with Linux
+	// https://www.kernel.org/doc/Documentation/filesystems/proc.txt
+	var statex MemoryStatusEx
+	statex.Length = uint32(unsafe.Sizeof(statex))
+	ret, _, _ := procGlobalMemoryStatusEx.Call(uintptr(unsafe.Pointer(&statex)))
+
+	if ret == 0 {
+		return 0, errors.New("unable to read physical memory")
+	}
+
+	return statex.TotalPhys, nil
+}