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3eef755b3b
This tag of hcsshim brings in a couple welcome features/improvements. One being exposing a way to query for hns endpoint statistics (Packets received/sent etc.). This tag also contains some optimizations for querying whether a certain HCN feature is supported, which is a common workflow in kube-proxy on Windows. The first result from querying HCN is now cached so further calls can skip the hcn query as well as the version range parsing that was performed. This also gets rid of some redundant logs that used to hit everytime the version range parsing occurred. The Go-winio dep bump, and all of the ctrd deps are transitive only. Nothing new is needed/intended to be used. Signed-off-by: Daniel Canter <dcanter@microsoft.com>
51 lines
1.1 KiB
Go
51 lines
1.1 KiB
Go
package osversion
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import (
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"fmt"
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"sync"
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"golang.org/x/sys/windows"
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)
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// OSVersion is a wrapper for Windows version information
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// https://msdn.microsoft.com/en-us/library/windows/desktop/ms724439(v=vs.85).aspx
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type OSVersion struct {
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Version uint32
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MajorVersion uint8
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MinorVersion uint8
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Build uint16
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}
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var (
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osv OSVersion
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once sync.Once
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)
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// Get gets the operating system version on Windows.
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// The calling application must be manifested to get the correct version information.
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func Get() OSVersion {
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once.Do(func() {
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var err error
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osv = OSVersion{}
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osv.Version, err = windows.GetVersion()
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if err != nil {
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// GetVersion never fails.
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panic(err)
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}
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osv.MajorVersion = uint8(osv.Version & 0xFF)
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osv.MinorVersion = uint8(osv.Version >> 8 & 0xFF)
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osv.Build = uint16(osv.Version >> 16)
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})
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return osv
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}
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// Build gets the build-number on Windows
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// The calling application must be manifested to get the correct version information.
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func Build() uint16 {
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return Get().Build
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}
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func (osv OSVersion) ToString() string {
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return fmt.Sprintf("%d.%d.%d", osv.MajorVersion, osv.MinorVersion, osv.Build)
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}
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