mscluster: restore support for Windows Server 2016-2019 (#1882)

Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>

internal/collector/hyperv/hyperv.go

@@ -23,11 +23,10 @@ import (
 	"strings"
 	"sync"
 
+	"github.com/Microsoft/hcsshim/osversion"
 	"github.com/alecthomas/kingpin/v2"
 	"github.com/prometheus-community/windows_exporter/internal/mi"
-	"github.com/prometheus-community/windows_exporter/internal/types"
 	"github.com/prometheus/client_golang/prometheus"
-	"golang.org/x/sys/windows"
 )
 
 const (
@@ -157,19 +156,17 @@ func (c *Collector) Build(_ *slog.Logger, _ *mi.Session) error {
 		return nil
 	}
 
-	version := windows.RtlGetVersion()
-
 	subCollectors := map[string]struct {
 		build          func() error
 		collect        func(ch chan<- prometheus.Metric) error
 		close          func()
-		minBuildNumber uint32
+		minBuildNumber uint16
 	}{
 		subCollectorDataStore: {
 			build:          c.buildDataStore,
 			collect:        c.collectDataStore,
 			close:          c.perfDataCollectorDataStore.Close,
-			minBuildNumber: types.BuildNumberWindowsServer2022,
+			minBuildNumber: osversion.LTSC2022,
 		},
 		subCollectorDynamicMemoryBalancer: {
 			build:   c.buildDynamicMemoryBalancer,
@@ -243,6 +240,8 @@ func (c *Collector) Build(_ *slog.Logger, _ *mi.Session) error {
 		},
 	}
 
+	buildNumber := osversion.Build()
+
 	// Result must order, to prevent test failures.
 	sort.Strings(c.config.CollectorsEnabled)
 
@@ -253,7 +252,7 @@ func (c *Collector) Build(_ *slog.Logger, _ *mi.Session) error {
 			return fmt.Errorf("unknown collector: %s", name)
 		}
 
-		if version.BuildNumber < subCollectors[name].minBuildNumber {
+		if buildNumber < subCollectors[name].minBuildNumber {
 			errs = append(errs, fmt.Errorf("collector %s requires Windows Server 2022 or newer", name))
 
 			continue