*: cleanup collector API 1 (#1547)

pkg/collector/cache/cache.go

@@ -6,6 +6,7 @@ import (
 	"github.com/alecthomas/kingpin/v2"
 	"github.com/go-kit/log"
 	"github.com/go-kit/log/level"
+	"github.com/pkg/errors"
 	"github.com/prometheus-community/windows_exporter/pkg/perflib"
 	"github.com/prometheus-community/windows_exporter/pkg/types"
 	"github.com/prometheus/client_golang/prometheus"
@@ -17,233 +18,238 @@ type Config struct{}
 
 var ConfigDefaults = Config{}
 
-// A collector is a Prometheus collector for Perflib Cache metrics
-type collector struct {
+// A Collector is a Prometheus Collector for Perflib Cache metrics
+type Collector struct {
 	logger log.Logger
 
-	AsyncCopyReadsTotal         *prometheus.Desc
-	AsyncDataMapsTotal          *prometheus.Desc
-	AsyncFastReadsTotal         *prometheus.Desc
-	AsyncMDLReadsTotal          *prometheus.Desc
-	AsyncPinReadsTotal          *prometheus.Desc
-	CopyReadHitsTotal           *prometheus.Desc
-	CopyReadsTotal              *prometheus.Desc
-	DataFlushesTotal            *prometheus.Desc
-	DataFlushPagesTotal         *prometheus.Desc
-	DataMapHitsPercent          *prometheus.Desc
-	DataMapPinsTotal            *prometheus.Desc
-	DataMapsTotal               *prometheus.Desc
-	DirtyPages                  *prometheus.Desc
-	DirtyPageThreshold          *prometheus.Desc
-	FastReadNotPossiblesTotal   *prometheus.Desc
-	FastReadResourceMissesTotal *prometheus.Desc
-	FastReadsTotal              *prometheus.Desc
-	LazyWriteFlushesTotal       *prometheus.Desc
-	LazyWritePagesTotal         *prometheus.Desc
-	MDLReadHitsTotal            *prometheus.Desc
-	MDLReadsTotal               *prometheus.Desc
-	PinReadHitsTotal            *prometheus.Desc
-	PinReadsTotal               *prometheus.Desc
-	ReadAheadsTotal             *prometheus.Desc
-	SyncCopyReadsTotal          *prometheus.Desc
-	SyncDataMapsTotal           *prometheus.Desc
-	SyncFastReadsTotal          *prometheus.Desc
-	SyncMDLReadsTotal           *prometheus.Desc
-	SyncPinReadsTotal           *prometheus.Desc
+	asyncCopyReadsTotal         *prometheus.Desc
+	asyncDataMapsTotal          *prometheus.Desc
+	asyncFastReadsTotal         *prometheus.Desc
+	asyncMDLReadsTotal          *prometheus.Desc
+	asyncPinReadsTotal          *prometheus.Desc
+	copyReadHitsTotal           *prometheus.Desc
+	copyReadsTotal              *prometheus.Desc
+	dataFlushesTotal            *prometheus.Desc
+	dataFlushPagesTotal         *prometheus.Desc
+	dataMapHitsPercent          *prometheus.Desc
+	dataMapPinsTotal            *prometheus.Desc
+	dataMapsTotal               *prometheus.Desc
+	dirtyPages                  *prometheus.Desc
+	dirtyPageThreshold          *prometheus.Desc
+	fastReadNotPossiblesTotal   *prometheus.Desc
+	fastReadResourceMissesTotal *prometheus.Desc
+	fastReadsTotal              *prometheus.Desc
+	lazyWriteFlushesTotal       *prometheus.Desc
+	lazyWritePagesTotal         *prometheus.Desc
+	mdlReadHitsTotal            *prometheus.Desc
+	mdlReadsTotal               *prometheus.Desc
+	pinReadHitsTotal            *prometheus.Desc
+	pinReadsTotal               *prometheus.Desc
+	readAheadsTotal             *prometheus.Desc
+	syncCopyReadsTotal          *prometheus.Desc
+	syncDataMapsTotal           *prometheus.Desc
+	syncFastReadsTotal          *prometheus.Desc
+	syncMDLReadsTotal           *prometheus.Desc
+	syncPinReadsTotal           *prometheus.Desc
 }
 
-func New(logger log.Logger, _ *Config) types.Collector {
-	c := &collector{}
+func New(logger log.Logger, _ *Config) *Collector {
+	c := &Collector{}
 	c.SetLogger(logger)
+
 	return c
 }
 
-func NewWithFlags(_ *kingpin.Application) types.Collector {
-	return &collector{}
+func NewWithFlags(_ *kingpin.Application) *Collector {
+	return &Collector{}
 }
 
-func (c *collector) GetName() string {
+func (c *Collector) GetName() string {
 	return Name
 }
 
-func (c *collector) SetLogger(logger log.Logger) {
+func (c *Collector) SetLogger(logger log.Logger) {
 	c.logger = log.With(logger, "collector", Name)
 }
 
-func (c *collector) GetPerfCounter() ([]string, error) {
+func (c *Collector) GetPerfCounter() ([]string, error) {
 	return []string{"Cache"}, nil
 }
 
-func (c *collector) Build() error {
-	c.AsyncCopyReadsTotal = prometheus.NewDesc(
+func (c *Collector) Close() error {
+	return nil
+}
+
+func (c *Collector) Build() error {
+	c.asyncCopyReadsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "async_copy_reads_total"),
 		"(AsyncCopyReadsTotal)",
 		nil,
 		nil,
 	)
-	c.AsyncDataMapsTotal = prometheus.NewDesc(
+	c.asyncDataMapsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "async_data_maps_total"),
 		"(AsyncDataMapsTotal)",
 		nil,
 		nil,
 	)
-	c.AsyncFastReadsTotal = prometheus.NewDesc(
+	c.asyncFastReadsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "async_fast_reads_total"),
 		"(AsyncFastReadsTotal)",
 		nil,
 		nil,
 	)
-	c.AsyncMDLReadsTotal = prometheus.NewDesc(
+	c.asyncMDLReadsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "async_mdl_reads_total"),
 		"(AsyncMDLReadsTotal)",
 		nil,
 		nil,
 	)
-	c.AsyncPinReadsTotal = prometheus.NewDesc(
+	c.asyncPinReadsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "async_pin_reads_total"),
 		"(AsyncPinReadsTotal)",
 		nil,
 		nil,
 	)
-	c.CopyReadHitsTotal = prometheus.NewDesc(
+	c.copyReadHitsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "copy_read_hits_total"),
 		"(CopyReadHitsTotal)",
 		nil,
 		nil,
 	)
-	c.CopyReadsTotal = prometheus.NewDesc(
+	c.copyReadsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "copy_reads_total"),
 		"(CopyReadsTotal)",
 		nil,
 		nil,
 	)
-	c.DataFlushesTotal = prometheus.NewDesc(
+	c.dataFlushesTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "data_flushes_total"),
 		"(DataFlushesTotal)",
 		nil,
 		nil,
 	)
-	c.DataFlushPagesTotal = prometheus.NewDesc(
+	c.dataFlushPagesTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "data_flush_pages_total"),
 		"(DataFlushPagesTotal)",
 		nil,
 		nil,
 	)
-	c.DataMapHitsPercent = prometheus.NewDesc(
+	c.dataMapHitsPercent = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "data_map_hits_percent"),
 		"(DataMapHitsPercent)",
 		nil,
 		nil,
 	)
-	c.DataMapPinsTotal = prometheus.NewDesc(
+	c.dataMapPinsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "data_map_pins_total"),
 		"(DataMapPinsTotal)",
 		nil,
 		nil,
 	)
-	c.DataMapsTotal = prometheus.NewDesc(
+	c.dataMapsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "data_maps_total"),
 		"(DataMapsTotal)",
 		nil,
 		nil,
 	)
-	c.DirtyPages = prometheus.NewDesc(
+	c.dirtyPages = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "dirty_pages"),
 		"(DirtyPages)",
 		nil,
 		nil,
 	)
-	c.DirtyPageThreshold = prometheus.NewDesc(
+	c.dirtyPageThreshold = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "dirty_page_threshold"),
 		"(DirtyPageThreshold)",
 		nil,
 		nil,
 	)
-	c.FastReadNotPossiblesTotal = prometheus.NewDesc(
+	c.fastReadNotPossiblesTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "fast_read_not_possibles_total"),
 		"(FastReadNotPossiblesTotal)",
 		nil,
 		nil,
 	)
-	c.FastReadResourceMissesTotal = prometheus.NewDesc(
+	c.fastReadResourceMissesTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "fast_read_resource_misses_total"),
 		"(FastReadResourceMissesTotal)",
 		nil,
 		nil,
 	)
-	c.FastReadsTotal = prometheus.NewDesc(
+	c.fastReadsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "fast_reads_total"),
 		"(FastReadsTotal)",
 		nil,
 		nil,
 	)
-	c.LazyWriteFlushesTotal = prometheus.NewDesc(
+	c.lazyWriteFlushesTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "lazy_write_flushes_total"),
 		"(LazyWriteFlushesTotal)",
 		nil,
 		nil,
 	)
-	c.LazyWritePagesTotal = prometheus.NewDesc(
+	c.lazyWritePagesTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "lazy_write_pages_total"),
 		"(LazyWritePagesTotal)",
 		nil,
 		nil,
 	)
-	c.MDLReadHitsTotal = prometheus.NewDesc(
+	c.mdlReadHitsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "mdl_read_hits_total"),
 		"(MDLReadHitsTotal)",
 		nil,
 		nil,
 	)
-	c.MDLReadsTotal = prometheus.NewDesc(
+	c.mdlReadsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "mdl_reads_total"),
 		"(MDLReadsTotal)",
 		nil,
 		nil,
 	)
-	c.PinReadHitsTotal = prometheus.NewDesc(
+	c.pinReadHitsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "pin_read_hits_total"),
 		"(PinReadHitsTotal)",
 		nil,
 		nil,
 	)
-	c.PinReadsTotal = prometheus.NewDesc(
+	c.pinReadsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "pin_reads_total"),
 		"(PinReadsTotal)",
 		nil,
 		nil,
 	)
-	c.ReadAheadsTotal = prometheus.NewDesc(
+	c.readAheadsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "read_aheads_total"),
 		"(ReadAheadsTotal)",
 		nil,
 		nil,
 	)
-	c.SyncCopyReadsTotal = prometheus.NewDesc(
+	c.syncCopyReadsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "sync_copy_reads_total"),
 		"(SyncCopyReadsTotal)",
 		nil,
 		nil,
 	)
-	c.SyncDataMapsTotal = prometheus.NewDesc(
+	c.syncDataMapsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "sync_data_maps_total"),
 		"(SyncDataMapsTotal)",
 		nil,
 		nil,
 	)
-	c.SyncFastReadsTotal = prometheus.NewDesc(
+	c.syncFastReadsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "sync_fast_reads_total"),
 		"(SyncFastReadsTotal)",
 		nil,
 		nil,
 	)
-	c.SyncMDLReadsTotal = prometheus.NewDesc(
+	c.syncMDLReadsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "sync_mdl_reads_total"),
 		"(SyncMDLReadsTotal)",
 		nil,
 		nil,
 	)
-	c.SyncPinReadsTotal = prometheus.NewDesc(
+	c.syncPinReadsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "sync_pin_reads_total"),
 		"(SyncPinReadsTotal)",
 		nil,
@@ -253,11 +259,13 @@ func (c *collector) Build() error {
 }
 
 // Collect implements the Collector interface
-func (c *collector) Collect(ctx *types.ScrapeContext, ch chan<- prometheus.Metric) error {
+func (c *Collector) Collect(ctx *types.ScrapeContext, ch chan<- prometheus.Metric) error {
 	if err := c.collect(ctx, ch); err != nil {
 		_ = level.Error(c.logger).Log("msg", "failed collecting cache metrics", "err", err)
+
 		return err
 	}
+
 	return nil
 }
 
@@ -269,23 +277,20 @@ type perflibCache struct {
 	AsyncFastReadsTotal         float64 `perflib:"Async Fast Reads/sec"`
 	AsyncMDLReadsTotal          float64 `perflib:"Async MDL Reads/sec"`
 	AsyncPinReadsTotal          float64 `perflib:"Async Pin Reads/sec"`
-	CopyReadHitsTotal           float64 `perflib:"Copy Read Hits %"`
+	CopyReadHitsTotal           float64 `perflib:"Copy Read Hits/sec"`
 	CopyReadsTotal              float64 `perflib:"Copy Reads/sec"`
 	DataFlushesTotal            float64 `perflib:"Data Flushes/sec"`
 	DataFlushPagesTotal         float64 `perflib:"Data Flush Pages/sec"`
-	DataMapHitsPercent          float64 `perflib:"Data Map Hits %"`
 	DataMapPinsTotal            float64 `perflib:"Data Map Pins/sec"`
 	DataMapsTotal               float64 `perflib:"Data Maps/sec"`
-	DirtyPages                  float64 `perflib:"Dirty Pages"`
-	DirtyPageThreshold          float64 `perflib:"Dirty Page Threshold"`
 	FastReadNotPossiblesTotal   float64 `perflib:"Fast Read Not Possibles/sec"`
 	FastReadResourceMissesTotal float64 `perflib:"Fast Read Resource Misses/sec"`
 	FastReadsTotal              float64 `perflib:"Fast Reads/sec"`
 	LazyWriteFlushesTotal       float64 `perflib:"Lazy Write Flushes/sec"`
 	LazyWritePagesTotal         float64 `perflib:"Lazy Write Pages/sec"`
-	MDLReadHitsTotal            float64 `perflib:"MDL Read Hits %"`
+	MDLReadHitsTotal            float64 `perflib:"MDL Read Hits/sec"`
 	MDLReadsTotal               float64 `perflib:"MDL Reads/sec"`
-	PinReadHitsTotal            float64 `perflib:"Pin Read Hits %"`
+	PinReadHitsTotal            float64 `perflib:"Pin Read Hits/sec"`
 	PinReadsTotal               float64 `perflib:"Pin Reads/sec"`
 	ReadAheadsTotal             float64 `perflib:"Read Aheads/sec"`
 	SyncCopyReadsTotal          float64 `perflib:"Sync Copy Reads/sec"`
@@ -293,187 +298,166 @@ type perflibCache struct {
 	SyncFastReadsTotal          float64 `perflib:"Sync Fast Reads/sec"`
 	SyncMDLReadsTotal           float64 `perflib:"Sync MDL Reads/sec"`
 	SyncPinReadsTotal           float64 `perflib:"Sync Pin Reads/sec"`
+	DirtyPages                  float64 `perflib:"Dirty Pages"`
+	DirtyPageThreshold          float64 `perflib:"Dirty Page Threshold"`
+	DataMapHitsPercent          float64 `perflib:"Data Map Hits %"`
 }
 
-func (c *collector) collect(ctx *types.ScrapeContext, ch chan<- prometheus.Metric) error {
+func (c *Collector) collect(ctx *types.ScrapeContext, ch chan<- prometheus.Metric) error {
 	var dst []perflibCache // Single-instance class, array is required but will have single entry.
 	if err := perflib.UnmarshalObject(ctx.PerfObjects["Cache"], &dst, c.logger); err != nil {
 		return err
 	}
 
+	if len(dst) != 1 {
+		return errors.New("expected single instance of Cache")
+	}
+
 	ch <- prometheus.MustNewConstMetric(
-		c.AsyncCopyReadsTotal,
+		c.asyncCopyReadsTotal,
 		prometheus.CounterValue,
 		dst[0].AsyncCopyReadsTotal,
 	)
-
 	ch <- prometheus.MustNewConstMetric(
-		c.AsyncDataMapsTotal,
+		c.asyncDataMapsTotal,
 		prometheus.CounterValue,
 		dst[0].AsyncDataMapsTotal,
 	)
-
 	ch <- prometheus.MustNewConstMetric(
-		c.AsyncFastReadsTotal,
+		c.asyncFastReadsTotal,
 		prometheus.CounterValue,
 		dst[0].AsyncFastReadsTotal,
 	)
-
 	ch <- prometheus.MustNewConstMetric(
-		c.AsyncMDLReadsTotal,
+		c.asyncMDLReadsTotal,
 		prometheus.CounterValue,
 		dst[0].AsyncMDLReadsTotal,
 	)
-
 	ch <- prometheus.MustNewConstMetric(
-		c.AsyncPinReadsTotal,
+		c.asyncPinReadsTotal,
 		prometheus.CounterValue,
 		dst[0].AsyncPinReadsTotal,
 	)
-
 	ch <- prometheus.MustNewConstMetric(
-		c.CopyReadHitsTotal,
-		prometheus.GaugeValue,
+		c.copyReadHitsTotal,
+		prometheus.CounterValue,
 		dst[0].CopyReadHitsTotal,
 	)
-
 	ch <- prometheus.MustNewConstMetric(
-		c.CopyReadsTotal,
+		c.copyReadsTotal,
 		prometheus.CounterValue,
 		dst[0].CopyReadsTotal,
 	)
-
 	ch <- prometheus.MustNewConstMetric(
-		c.DataFlushesTotal,
+		c.dataFlushesTotal,
 		prometheus.CounterValue,
 		dst[0].DataFlushesTotal,
 	)
-
 	ch <- prometheus.MustNewConstMetric(
-		c.DataFlushPagesTotal,
+		c.dataFlushPagesTotal,
 		prometheus.CounterValue,
 		dst[0].DataFlushPagesTotal,
 	)
-
 	ch <- prometheus.MustNewConstMetric(
-		c.DataMapHitsPercent,
+		c.dataMapPinsTotal,
+		prometheus.CounterValue,
+		dst[0].DataMapPinsTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.dataMapsTotal,
+		prometheus.CounterValue,
+		dst[0].DataMapsTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.fastReadNotPossiblesTotal,
+		prometheus.CounterValue,
+		dst[0].FastReadNotPossiblesTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.fastReadResourceMissesTotal,
+		prometheus.CounterValue,
+		dst[0].FastReadResourceMissesTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.fastReadsTotal,
+		prometheus.CounterValue,
+		dst[0].FastReadsTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.lazyWriteFlushesTotal,
+		prometheus.CounterValue,
+		dst[0].LazyWriteFlushesTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.lazyWritePagesTotal,
+		prometheus.CounterValue,
+		dst[0].LazyWritePagesTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.mdlReadHitsTotal,
+		prometheus.CounterValue,
+		dst[0].MDLReadHitsTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.mdlReadsTotal,
+		prometheus.CounterValue,
+		dst[0].MDLReadsTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.pinReadHitsTotal,
+		prometheus.CounterValue,
+		dst[0].PinReadHitsTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.pinReadsTotal,
+		prometheus.CounterValue,
+		dst[0].PinReadsTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.readAheadsTotal,
+		prometheus.CounterValue,
+		dst[0].ReadAheadsTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.syncCopyReadsTotal,
+		prometheus.CounterValue,
+		dst[0].SyncCopyReadsTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.syncDataMapsTotal,
+		prometheus.CounterValue,
+		dst[0].SyncDataMapsTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.syncFastReadsTotal,
+		prometheus.CounterValue,
+		dst[0].SyncFastReadsTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.syncMDLReadsTotal,
+		prometheus.CounterValue,
+		dst[0].SyncMDLReadsTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.syncPinReadsTotal,
+		prometheus.CounterValue,
+		dst[0].SyncPinReadsTotal,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.dirtyPages,
+		prometheus.GaugeValue,
+		dst[0].DirtyPages,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.dirtyPageThreshold,
+		prometheus.GaugeValue,
+		dst[0].DirtyPageThreshold,
+	)
+	ch <- prometheus.MustNewConstMetric(
+		c.dataMapHitsPercent,
 		prometheus.GaugeValue,
 		dst[0].DataMapHitsPercent,
 	)
 
-	ch <- prometheus.MustNewConstMetric(
-		c.DataMapPinsTotal,
-		prometheus.CounterValue,
-		dst[0].DataMapPinsTotal,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.DataMapsTotal,
-		prometheus.CounterValue,
-		dst[0].DataMapsTotal,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.DirtyPages,
-		prometheus.GaugeValue,
-		dst[0].DirtyPages,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.DirtyPageThreshold,
-		prometheus.GaugeValue,
-		dst[0].DirtyPageThreshold,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.FastReadNotPossiblesTotal,
-		prometheus.CounterValue,
-		dst[0].FastReadNotPossiblesTotal,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.FastReadResourceMissesTotal,
-		prometheus.CounterValue,
-		dst[0].FastReadResourceMissesTotal,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.FastReadsTotal,
-		prometheus.CounterValue,
-		dst[0].FastReadsTotal,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.LazyWriteFlushesTotal,
-		prometheus.CounterValue,
-		dst[0].LazyWriteFlushesTotal,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.LazyWritePagesTotal,
-		prometheus.CounterValue,
-		dst[0].LazyWritePagesTotal,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.MDLReadHitsTotal,
-		prometheus.CounterValue,
-		dst[0].MDLReadHitsTotal,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.MDLReadsTotal,
-		prometheus.CounterValue,
-		dst[0].MDLReadsTotal,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.PinReadHitsTotal,
-		prometheus.CounterValue,
-		dst[0].PinReadHitsTotal,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.PinReadsTotal,
-		prometheus.CounterValue,
-		dst[0].PinReadsTotal,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.ReadAheadsTotal,
-		prometheus.CounterValue,
-		dst[0].ReadAheadsTotal,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.SyncCopyReadsTotal,
-		prometheus.CounterValue,
-		dst[0].SyncCopyReadsTotal,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.SyncDataMapsTotal,
-		prometheus.CounterValue,
-		dst[0].SyncDataMapsTotal,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.SyncFastReadsTotal,
-		prometheus.CounterValue,
-		dst[0].SyncFastReadsTotal,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.SyncMDLReadsTotal,
-		prometheus.CounterValue,
-		dst[0].SyncMDLReadsTotal,
-	)
-
-	ch <- prometheus.MustNewConstMetric(
-		c.SyncPinReadsTotal,
-		prometheus.CounterValue,
-		dst[0].SyncPinReadsTotal,
-	)
-
 	return nil
 }

pkg/collector/cache/cache_test.go

@@ -0,0 +1,12 @@
+package cache_test
+
+import (
+	"testing"
+
+	"github.com/prometheus-community/windows_exporter/pkg/collector/cache"
+	"github.com/prometheus-community/windows_exporter/pkg/testutils"
+)
+
+func BenchmarkCollector(b *testing.B) {
+	testutils.FuncBenchmarkCollector(b, cache.Name, cache.NewWithFlags)
+}