pagefile: BREAKING: move paging metrics from os to dedicated collector (click PR for more information) (#1735)

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

internal/perfdata/v2/collector.go

@@ -5,6 +5,7 @@ package v2
 import (
 	"errors"
 	"fmt"
+	"slices"
 	"strings"
 	"unsafe"
 
@@ -14,9 +15,10 @@ import (
 )
 
 type Collector struct {
-	object   string
-	counters map[string]Counter
-	handle   pdhQueryHandle
+	object                string
+	counters              map[string]Counter
+	handle                pdhQueryHandle
+	totalCounterRequested bool
 }
 
 type Counter struct {
@@ -39,9 +41,10 @@ func NewCollector(object string, instances []string, counters []string) (*Collec
 	}
 
 	collector := &Collector{
-		object:   object,
-		counters: make(map[string]Counter, len(counters)),
-		handle:   handle,
+		object:                object,
+		counters:              make(map[string]Counter, len(counters)),
+		handle:                handle,
+		totalCounterRequested: slices.Contains(instances, "_Total"),
 	}
 
 	for _, counterName := range counters {
@@ -166,12 +169,10 @@ func (c *Collector) Collect() (map[string]map[string]perftypes.CounterValues, er
 				metricType = prometheus.GaugeValue
 			}
 
-			_, isTotalCounterRequests := c.counters["_Total"]
-
 			for _, item := range items {
 				if item.RawValue.CStatus == PdhCstatusValidData || item.RawValue.CStatus == PdhCstatusNewData {
 					instanceName := windows.UTF16PtrToString(item.SzName)
-					if strings.HasSuffix(instanceName, "_Total") && !isTotalCounterRequests {
+					if strings.HasSuffix(instanceName, "_Total") && !c.totalCounterRequested {
 						continue
 					}