feat: Tolerate collector failures (#1769)

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

.golangci.yaml

@@ -11,7 +11,6 @@ linters:
     - exportloopref
     - fatcontext
     - funlen
-    - gochecknoglobals
     - gocognit
     - goconst
     - gocyclo
@@ -26,7 +25,10 @@ linters:
     - wrapcheck
 
 run:
-  timeout: 5m
+  timeout: 15m
+
+output:
+  sort-results: true
 
 linters-settings:
   gosec:
@@ -85,7 +87,3 @@ issues:
   - text: "don't use ALL_CAPS in Go names; use CamelCase"
     linters:
     - revive
-  - path: internal/perfdata/v1/
-    linters:
-      - godox
-      - stylecheck

.promu.yml

@@ -8,6 +8,7 @@ repository:
 build:
   binaries:
     - name: windows_exporter
+      path: ./cmd/windows_exporter
   tags:
     all:
       - trimpath

.run/all.run.xml

@@ -0,0 +1,13 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="all" type="GoApplicationRunConfiguration" factoryName="Go Application" folderName="run">
+    <module name="windows_exporter" />
+    <working_directory value="$PROJECT_DIR$" />
+    <parameters value="--web.listen-address=127.0.0.1:9182 --log.level=debug --collectors.enabled=ad,adcs,adfs,cache,container,cpu,cpu_info,cs,dfsr,dhcp,diskdrive,dns,exchange,filetime,fsrmquota,hyperv,iis,license,logical_disk,logon,memory,mscluster,msmq,mssql,net,netframework,nps,os,pagefile,perfdata,physical_disk,printer,process,remote_fx,scheduled_task,service,smb,smbclient,smtp,system,tcp,terminal_services,textfile,thermalzone,time,udp,update,vmware" />
+    <sudo value="true" />
+    <kind value="PACKAGE" />
+    <package value="github.com/prometheus-community/windows_exporter/cmd/windows_exporter" />
+    <directory value="$PROJECT_DIR$" />
+    <filePath value="$PROJECT_DIR$/exporter.go" />
+    <method v="2" />
+  </configuration>
+</component>

cmd/windows_exporter/doc.go

@@ -0,0 +1,195 @@
+// Copyright 2024 The Prometheus 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.
+
+/*
+The main package for the windows_exporter executable.
+
+usage: windows_exporter [<flags>]
+
+A metrics collector for Windows.
+
+Flags:
+
+	-h, --[no-]help                Show context-sensitive help (also try
+	                               --help-long and --help-man).
+	    --config.file=CONFIG.FILE  YAML configuration file to use. Values set in
+	                               this file will be overridden by CLI flags.
+	    --[no-]config.file.insecure-skip-verify
+	                               Skip TLS verification in loading YAML
+	                               configuration.
+	    --web.listen-address=:9182 ...
+	                               Addresses on which to expose metrics and web
+	                               interface. Repeatable for multiple addresses.
+	                               Examples: `:9100` or `[::1]:9100` for http,
+	                               `vsock://:9100` for vsock
+	    --web.config.file=""       Path to configuration file that can
+	                               enable TLS or authentication. See:
+	                               https://github.com/prometheus/exporter-toolkit/blob/master/docs/web-configuration.md
+	    --telemetry.path="/metrics"
+	                               URL path for surfacing collected metrics.
+	    --[no-]web.disable-exporter-metrics
+	                               Exclude metrics about the exporter itself
+	                               (promhttp_*, process_*, go_*).
+	    --telemetry.max-requests=5
+	                               Maximum number of concurrent requests. 0 to
+	                               disable.
+	    --collectors.enabled="cpu,cs,memory,logical_disk,physical_disk,net,os,service,system"
+	                               Comma-separated list of collectors to use.
+	                               Use '[defaults]' as a placeholder for all the
+	                               collectors enabled by default.
+	    --scrape.timeout-margin=0.5
+	                               Seconds to subtract from the timeout allowed by
+	                               the client. Tune to allow for overhead or high
+	                               loads.
+	    --[no-]debug.enabled       If true, windows_exporter will expose debug
+	                               endpoints under /debug/pprof.
+	    --process.priority="normal"
+	                               Priority of the exporter process. Higher
+	                               priorities may improve exporter responsiveness
+	                               during periods of system load. Can be one of
+	                               ["realtime", "high", "abovenormal", "normal",
+	                               "belownormal", "low"]
+	    --log.level=info           Only log messages with the given severity or
+	                               above. One of: [debug, info, warn, error]
+	    --log.format=logfmt        Output format of log messages. One of: [logfmt,
+	                               json]
+	    --log.file=stderr          Output file of log messages. One of [stdout,
+	                               stderr, eventlog, <path to log file>]
+	    --[no-]version             Show application version.
+	    --collector.scheduled_task.exclude=""
+	                               Regexp of tasks to exclude. Task path must
+	                               both match include and not match exclude to be
+	                               included.
+	    --collector.scheduled_task.include=".+"
+	                               Regexp of tasks to include. Task path must
+	                               both match include and not match exclude to be
+	                               included.
+	    --[no-]collector.updates.online
+	                               Whether to search for updates online.
+	    --collector.updates.scrape-interval=6h0m0s
+	                               Define the interval of scraping Windows Update
+	                               information.
+	    --[no-]collector.exchange.list
+	                               List the collectors along with their perflib
+	                               object name/ids
+	    --collector.exchange.enabled="ADAccessProcesses,TransportQueues,HttpProxy,ActiveSync,AvailabilityService,OutlookWebAccess,Autodiscover,WorkloadManagement,RpcClientAccess,MapiHttpEmsmdb"
+	                               Comma-separated list of collectors to use.
+	                               Defaults to all, if not specified.
+	    --collector.net.nic-exclude=""
+	                               Regexp of NIC:s to exclude. NIC name must
+	                               both match include and not match exclude to be
+	                               included.
+	    --collector.net.nic-include=".+"
+	                               Regexp of NIC:s to include. NIC name must
+	                               both match include and not match exclude to be
+	                               included.
+	    --collector.net.enabled="metrics,nic_addresses"
+	                               Comma-separated list of collectors to use.
+	                               Defaults to all, if not specified.
+	    --collector.mscluster.enabled="cluster,network,node,resource,resourcegroup"
+	                               Comma-separated list of collectors to use.
+	    --collector.mssql.enabled="accessmethods,availreplica,bufman,databases,dbreplica,genstats,locks,memmgr,sqlerrors,sqlstats,transactions,waitstats"
+	                               Comma-separated list of collectors to use.
+	    --collector.mssql.port=1433
+	                               Port of MSSQL server used for
+	                               windows_mssql_info metric.
+	    --collector.physical_disk.disk-exclude=""
+	                               Regexp of disks to exclude. Disk number must
+	                               both match include and not match exclude to be
+	                               included.
+	    --collector.physical_disk.disk-include=".+"
+	                               Regexp of disks to include. Disk number must
+	                               both match include and not match exclude to be
+	                               included.
+	    --collector.textfile.directories="C:\\Users\\Jan\\GolandProjects\\windows_exporter\\textfile_inputs"
+	                               Directory or Directories to read text files
+	                               with metrics from.
+	    --collector.filetime.file-patterns=""
+	                               Comma-separated list of file patterns.
+	                               Each pattern is a glob pattern that can
+	                               contain `*`, `?`, and `**` (recursive). See
+	                               https://github.com/bmatcuk/doublestar#patterns
+	    --collector.iis.app-exclude=""
+	                               Regexp of apps to exclude. App name must both
+	                               match include and not match exclude to be
+	                               included.
+	    --collector.iis.app-include=".+"
+	                               Regexp of apps to include. App name must both
+	                               match include and not match exclude to be
+	                               included.
+	    --collector.iis.site-exclude=""
+	                               Regexp of sites to exclude. Site name must
+	                               both match include and not match exclude to be
+	                               included.
+	    --collector.iis.site-include=".+"
+	                               Regexp of sites to include. Site name must
+	                               both match include and not match exclude to be
+	                               included.
+	    --collector.perfdata.objects=""
+	                               Objects of performance data to observe.
+	                               See docs for more information on how to use
+	                               this flag. By default, no objects are observed.
+	    --collector.printer.include=".+"
+	                               Regular expression to match printers to collect
+	                               metrics for
+	    --collector.printer.exclude=""
+	                               Regular expression to match printers to exclude
+	    --collector.process.exclude=""
+	                               Regexp of processes to exclude. Process name
+	                               must both match include and not match exclude
+	                               to be included.
+	    --collector.process.include=".+"
+	                               Regexp of processes to include. Process name
+	                               must both match include and not match exclude
+	                               to be included.
+	    --[no-]collector.process.iis
+	                               Enable IIS worker process name queries.
+	                               May cause the collector to leak memory.
+	    --collector.hyperv.enabled="datastore,dynamic_memory_balancer,dynamic_memory_vm,hypervisor_logical_processor,hypervisor_root_partition,hypervisor_root_virtual_processor,hypervisor_virtual_processor,legacy_network_adapter,virtual_machine_health_summary,virtual_machine_vid_partition,virtual_network_adapter,virtual_network_adapter_drop_reasons,virtual_smb,virtual_storage_device,virtual_switch"
+	                               Comma-separated list of collectors to use.
+	    --collector.logical_disk.volume-exclude=""
+	                               Regexp of volumes to exclude. Volume name must
+	                               both match include and not match exclude to be
+	                               included.
+	    --collector.logical_disk.volume-include=".+"
+	                               Regexp of volumes to include. Volume name must
+	                               both match include and not match exclude to be
+	                               included.
+	    --collector.smtp.server-exclude=""
+	                               Regexp of virtual servers to exclude. Server
+	                               name must both match include and not match
+	                               exclude to be included.
+	    --collector.smtp.server-include=".+"
+	                               Regexp of virtual servers to include. Server
+	                               name must both match include and not match
+	                               exclude to be included.
+	    --collector.tcp.enabled="metrics,connections_state"
+	                               Comma-separated list of collectors to use.
+	                               Defaults to all, if not specified.
+	    --collector.dfsr.sources-enabled="connection,folder,volume"
+	                               Comma-separated list of DFSR Perflib sources to
+	                               use.
+	    --collector.service.exclude=""
+	                               Regexp of service to exclude. Service name (not
+	                               the display name!) must both match include and
+	                               not match exclude to be included.
+	    --collector.service.include=".+"
+	                               Regexp of service to include. Process name (not
+	                               the display name!) must both match include and
+	                               not match exclude to be included.
+	    --collector.time.enabled="system_time,ntp"
+	                               Comma-separated list of collectors to use.
+	                               Defaults to all, if not specified. ntp may not
+	                               available on all systems.
+*/
+package main

cmd/windows_exporter/main.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 //go:generate go run github.com/tc-hib/go-winres@v0.3.3 make --product-version=git-tag --file-version=git-tag --arch=amd64,arm64
@@ -29,6 +42,7 @@ import (
 	"github.com/prometheus-community/windows_exporter/internal/httphandler"
 	"github.com/prometheus-community/windows_exporter/internal/log"
 	"github.com/prometheus-community/windows_exporter/internal/log/flag"
+	"github.com/prometheus-community/windows_exporter/internal/utils"
 	"github.com/prometheus-community/windows_exporter/pkg/collector"
 	"github.com/prometheus/common/version"
 	"github.com/prometheus/exporter-toolkit/web"
@@ -51,6 +65,8 @@ func main() {
 }
 
 func run() int {
+	startTime := time.Now()
+
 	app := kingpin.New("windows_exporter", "A metrics collector for Windows.")
 
 	var (
@@ -178,7 +194,7 @@ func run() int {
 
 	enabledCollectorList := expandEnabledCollectors(*enabledCollectors)
 	if err := collectors.Enable(enabledCollectorList); err != nil {
-		logger.Error("Couldn't enable collectors",
+		logger.Error("couldn't enable collectors",
 			slog.Any("err", err),
 		)
 
@@ -187,11 +203,11 @@ func run() int {
 
 	// Initialize collectors before loading
 	if err = collectors.Build(logger); err != nil {
-		logger.Error("Couldn't load collectors",
-			slog.Any("err", err),
-		)
-
-		return 1
+		for _, err := range utils.SplitError(err) {
+			logger.Warn("couldn't initialize collector",
+				slog.Any("err", err),
+			)
+		}
 	}
 
 	logCurrentUser(logger)
@@ -215,7 +231,7 @@ func run() int {
 		mux.HandleFunc("GET /debug/pprof/trace", pprof.Trace)
 	}
 
-	logger.Info("Starting windows_exporter",
+	logger.Info(fmt.Sprintf("starting windows_exporter in %s", time.Since(startTime)),
 		slog.String("version", version.Version),
 		slog.String("branch", version.Branch),
 		slog.String("revision", version.GetRevision()),

cmd/windows_exporter/winres/winres.json

@@ -0,0 +1,56 @@
+{
+    "RT_GROUP_ICON": {
+        "APP": {
+            "0000": [
+                "icon.png"
+            ]
+        }
+    },
+    "RT_MANIFEST": {
+        "#1": {
+            "0409": {
+                "description": "A Prometheus exporter for Windows machines.",
+                "minimum-os": "win7",
+                "execution-level": "as invoker",
+                "ui-access": false,
+                "auto-elevate": false,
+                "dpi-awareness": "system",
+                "disable-theming": false,
+                "disable-window-filtering": false,
+                "high-resolution-scrolling-aware": false,
+                "ultra-high-resolution-scrolling-aware": false,
+                "long-path-aware": false,
+                "printer-driver-isolation": false,
+                "gdi-scaling": false,
+                "segment-heap": false,
+                "use-common-controls-v6": false
+            }
+        }
+    },
+    "RT_VERSION": {
+        "#1": {
+            "0000": {
+                "fixed": {
+                    "file_version": "0.0.0.0",
+                    "product_version": "0.0.0.0"
+                },
+                "info": {
+                    "0409": {
+                        "Comments": "",
+                        "CompanyName": "Prometheus Community",
+                        "FileDescription": "A Prometheus exporter for Windows machines.",
+                        "FileVersion": "",
+                        "InternalName": "windows_exporter",
+                        "LegalCopyright": "",
+                        "LegalTrademarks": "",
+                        "OriginalFilename": "",
+                        "PrivateBuild": "",
+                        "ProductName": "windows_exporter",
+                        "ProductVersion": "",
+                        "SpecialBuild": ""
+                    }
+                }
+            }
+        }
+    }
+}

docs/collector.msmq.md

@@ -2,26 +2,22 @@
 
 The msmq collector exposes metrics about the queues on a MSMQ server
 
-|||
--|-
-Metric name prefix  | `msmq`
-Classes             | `Win32_PerfRawData_MSMQ_MSMQQueue`
-Enabled by default? | No
+|                     |                      |
+|---------------------|----------------------|
+| Metric name prefix  | `msmq`               |
+| Spource             | Performance Counters |
+| Enabled by default? | No                   |
 
 ## Flags
 
-### `--collector.msmq.msmq-where`
-
-A WMI filter on which queues to include. `%` is a wildcard, and can be used to match on substrings.
-
 ## Metrics
 
-Name | Description | Type | Labels
------|-------------|------|-------
-`windows_msmq_bytes_in_journal_queue` | Size of queue journal in bytes | gauge | `name`
-`windows_msmq_bytes_in_queue` | Size of queue in bytes | gauge | `name`
-`windows_msmq_messages_in_journal_queue` | Count messages in queue journal | gauge | `name`
-`windows_msmq_messages_in_queue` | Count messages in queue | gauge | `name`
+| Name                                     | Description                     | Type  | Labels |
+|------------------------------------------|---------------------------------|-------|--------|
+| `windows_msmq_bytes_in_journal_queue`    | Size of queue journal in bytes  | gauge | `name` |
+| `windows_msmq_bytes_in_queue`            | Size of queue in bytes          | gauge | `name` |
+| `windows_msmq_messages_in_journal_queue` | Count messages in queue journal | gauge | `name` |
+| `windows_msmq_messages_in_queue`         | Count messages in queue         | gauge | `name` |
 
 ### Example metric
 _This collector does not yet have explained examples, we would appreciate your help adding them!_

go.mod

@@ -14,7 +14,7 @@ require (
 	github.com/prometheus/client_model v0.6.1
 	github.com/prometheus/common v0.60.1
 	github.com/prometheus/exporter-toolkit v0.13.1
-	github.com/stretchr/testify v1.9.0
+	github.com/stretchr/testify v1.10.0
 	golang.org/x/sys v0.27.0
 	gopkg.in/yaml.v3 v3.0.1
 )

go.sum

@@ -114,8 +114,9 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
-github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
+github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/xhit/go-str2duration/v2 v2.1.0 h1:lxklc02Drh6ynqX+DdPyp5pCKLUQpRT8bp8Ydu2Bstc=
 github.com/xhit/go-str2duration/v2 v2.1.0/go.mod h1:ohY8p+0f07DiV6Em5LKB0s2YpLtXVyJfNt1+BlmyAsU=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=

installer/files.wxs

@@ -1,3 +1,18 @@
+<!--
+  ~ Copyright 2024 The Prometheus 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.
+  -->
+
 <Wix xmlns="http://wixtoolset.org/schemas/v4/wxs"
      xmlns:util="http://wixtoolset.org/schemas/v4/wxs/util">
     <Fragment>

installer/main.wxs

@@ -9,6 +9,21 @@
 <?define PlatformProgramFilesFolder = "ProgramFilesFolder" ?>
 <?endif?>
 
+<!--
+  ~ Copyright 2024 The Prometheus 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.
+  -->
+
 <Wix xmlns="http://wixtoolset.org/schemas/v4/wxs"
      xmlns:fw="http://wixtoolset.org/schemas/v4/wxs/firewall"
      xmlns:ui="http://wixtoolset.org/schemas/v4/wxs/ui">

internal/collector/ad/ad.go

@@ -1,9 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package ad
 
 import (
-	"errors"
 	"fmt"
 	"log/slog"
 
@@ -18,6 +30,7 @@ const Name = "ad"
 
 type Config struct{}
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{}
 
 type Collector struct {
@@ -265,7 +278,7 @@ func (c *Collector) Build(_ *slog.Logger, _ *mi.Session) error {
 
 	var err error
 
-	c.perfDataCollector, err = perfdata.NewCollector("DirectoryServices", perfdata.InstanceAll, counters)
+	c.perfDataCollector, err = perfdata.NewCollector("DirectoryServices", perfdata.InstancesAll, counters)
 	if err != nil {
 		return fmt.Errorf("failed to create DirectoryServices collector: %w", err)
 	}
@@ -658,7 +671,7 @@ func (c *Collector) Collect(ch chan<- prometheus.Metric) error {
 	data, ok := perfData["NTDS"]
 
 	if !ok {
-		return errors.New("perflib query for DirectoryServices (AD) returned empty result set")
+		return fmt.Errorf("failed to collect DirectoryServices (AD) metrics: %w", types.ErrNoData)
 	}
 
 	ch <- prometheus.MustNewConstMetric(

internal/collector/ad/ad_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package ad_test

internal/collector/ad/const.go

@@ -1,3 +1,18 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
 package ad
 
 const (

internal/collector/adcs/adcs.go

@@ -1,9 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package adcs
 
 import (
-	"errors"
 	"fmt"
 	"log/slog"
 
@@ -19,6 +31,7 @@ const Name = "adcs"
 
 type Config struct{}
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{}
 
 type Collector struct {
@@ -70,7 +83,7 @@ func (c *Collector) Close() error {
 func (c *Collector) Build(_ *slog.Logger, _ *mi.Session) error {
 	var err error
 
-	c.perfDataCollector, err = perfdata.NewCollector("Certification Authority", perfdata.InstanceAll, []string{
+	c.perfDataCollector, err = perfdata.NewCollector("Certification Authority", perfdata.InstancesAll, []string{
 		requestsPerSecond,
 		requestProcessingTime,
 		retrievalsPerSecond,
@@ -178,7 +191,7 @@ func (c *Collector) Collect(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for Certification Authority (ADCS) returned empty result set")
+		return fmt.Errorf("failed to collect Certification Authority (ADCS) metrics: %w", types.ErrNoData)
 	}
 
 	for name, data := range perfData {

internal/collector/adcs/adcs_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package adcs_test

internal/collector/adcs/const.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package adcs

internal/collector/adfs/adfs.go

@@ -1,9 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package adfs
 
 import (
-	"errors"
 	"fmt"
 	"log/slog"
 	"maps"
@@ -21,6 +33,7 @@ const Name = "adfs"
 
 type Config struct{}
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{}
 
 type Collector struct {
@@ -102,7 +115,7 @@ func (c *Collector) Close() error {
 func (c *Collector) Build(_ *slog.Logger, _ *mi.Session) error {
 	var err error
 
-	c.perfDataCollector, err = perfdata.NewCollector("AD FS", perfdata.InstanceAll, []string{
+	c.perfDataCollector, err = perfdata.NewCollector("AD FS", nil, []string{
 		adLoginConnectionFailures,
 		certificateAuthentications,
 		deviceAuthentications,
@@ -422,13 +435,13 @@ func (c *Collector) Collect(ch chan<- prometheus.Metric) error {
 	instanceKey := slices.Collect(maps.Keys(data))
 
 	if len(instanceKey) == 0 {
-		return errors.New("perflib query for ADFS returned empty result set")
+		return fmt.Errorf("failed to collect ADFS metrics: %w", types.ErrNoData)
 	}
 
 	adfsData, ok := data[instanceKey[0]]
 
 	if !ok {
-		return errors.New("perflib query for ADFS returned empty result set")
+		return fmt.Errorf("failed to collect ADFS metrics: %w", types.ErrNoData)
 	}
 
 	ch <- prometheus.MustNewConstMetric(

internal/collector/adfs/adfs_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package adfs_test

internal/collector/adfs/const.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package adfs
@@ -19,7 +32,7 @@ const (
 	oAuthClientAuthenticationFailures              = "OAuth Client Authentications Failures"
 	oAuthClientAuthentications                     = "OAuth Client Authentications"
 	oAuthClientBasicAuthenticationFailures         = "OAuth Client Secret Basic Authentication Failures"
-	oAuthClientBasicAuthentications                = "OAuth Client Secret Basic Authentication Requests"
+	oAuthClientBasicAuthentications                = "OAuth Client Secret Basic Authentications"
 	oAuthClientCredentialRequestFailures           = "OAuth Client Credentials Request Failures"
 	oAuthClientCredentialRequests                  = "OAuth Client Credentials Requests"
 	oAuthClientPrivateKeyJWTAuthenticationFailures = "OAuth Client Private Key Jwt Authentication Failures"

internal/collector/cache/cache.go

@@ -1,9 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package cache
 
 import (
-	"errors"
 	"fmt"
 	"log/slog"
 
@@ -18,6 +30,7 @@ const Name = "cache"
 
 type Config struct{}
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{}
 
 // A Collector is a Prometheus Collector for Perflib Cache metrics.
@@ -86,7 +99,7 @@ func (c *Collector) Close() error {
 func (c *Collector) Build(_ *slog.Logger, _ *mi.Session) error {
 	var err error
 
-	c.perfDataCollector, err = perfdata.NewCollector("Cache", perfdata.InstanceAll, []string{
+	c.perfDataCollector, err = perfdata.NewCollector("Cache", perfdata.InstancesAll, []string{
 		asyncCopyReadsTotal,
 		asyncDataMapsTotal,
 		asyncFastReadsTotal,
@@ -306,10 +319,10 @@ func (c *Collector) Collect(ch chan<- prometheus.Metric) error {
 		return fmt.Errorf("failed to collect Cache metrics: %w", err)
 	}
 
-	cacheData, ok := data[perfdata.EmptyInstance]
+	cacheData, ok := data[perfdata.InstanceEmpty]
 
 	if !ok {
-		return errors.New("perflib query for Cache returned empty result set")
+		return fmt.Errorf("failed to collect Cache metrics: %w", types.ErrNoData)
 	}
 
 	ch <- prometheus.MustNewConstMetric(

internal/collector/cache/cache_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package cache_test

internal/collector/cache/const.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package cache

internal/collector/container/container.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package container
@@ -20,6 +33,7 @@ const Name = "container"
 
 type Config struct{}
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{}
 
 // A Collector is a Prometheus Collector for containers metrics.

internal/collector/container/container_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package container_test

internal/collector/cpu/const.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package cpu

internal/collector/cpu/cpu.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package cpu
@@ -19,6 +32,7 @@ const Name = "cpu"
 
 type Config struct{}
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{}
 
 type Collector struct {
@@ -78,7 +92,7 @@ func (c *Collector) Build(_ *slog.Logger, _ *mi.Session) error {
 
 	c.mu = sync.Mutex{}
 
-	c.perfDataCollector, err = perfdata.NewCollector("Processor Information", perfdata.InstanceAll, []string{
+	c.perfDataCollector, err = perfdata.NewCollector("Processor Information", perfdata.InstancesAll, []string{
 		c1TimeSeconds,
 		c2TimeSeconds,
 		c3TimeSeconds,

internal/collector/cpu/cpu_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package cpu_test

internal/collector/cpu_info/cpu_info.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package cpu_info
@@ -19,6 +32,7 @@ const Name = "cpu_info"
 
 type Config struct{}
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{}
 
 // A Collector is a Prometheus Collector for a few WMI metrics in Win32_Processor.
@@ -134,6 +148,11 @@ func (c *Collector) Build(_ *slog.Logger, miSession *mi.Session) error {
 		nil,
 	)
 
+	var dst []miProcessor
+	if err := c.miSession.Query(&dst, mi.NamespaceRootCIMv2, c.miQuery); err != nil {
+		return fmt.Errorf("WMI query failed: %w", err)
+	}
+
 	return nil
 }
 

internal/collector/cpu_info/cpu_info_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package cpu_info_test

internal/collector/cs/cs.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package cs
@@ -16,6 +29,7 @@ const Name = "cs"
 
 type Config struct{}
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{}
 
 // A Collector is a Prometheus Collector for WMI metrics.

internal/collector/cs/cs_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package cs_test

internal/collector/dfsr/const.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package dfsr
@@ -40,5 +53,5 @@ const (
 	databaseLookupsTotal           = "Database Lookups"
 	usnJournalRecordsReadTotal     = "USN Journal Records Read"
 	usnJournalRecordsAcceptedTotal = "USN Journal Records Accepted"
-	usnJournalUnreadPercentage     = "USN Journal Records Unread Percentage"
+	usnJournalUnreadPercentage     = "USN Journal Unread Percentage"
 )

internal/collector/dfsr/dfsr.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package dfsr
@@ -22,6 +35,7 @@ type Config struct {
 	CollectorsEnabled []string `yaml:"collectors_enabled"`
 }
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{
 	CollectorsEnabled: []string{"connection", "folder", "volume"},
 }
@@ -146,7 +160,7 @@ func (c *Collector) Build(logger *slog.Logger, _ *mi.Session) error {
 	var err error
 
 	if slices.Contains(c.config.CollectorsEnabled, "connection") {
-		c.perfDataCollectorConnection, err = perfdata.NewCollector("DFS Replication Connections", perfdata.InstanceAll, []string{
+		c.perfDataCollectorConnection, err = perfdata.NewCollector("DFS Replication Connections", perfdata.InstancesAll, []string{
 			bandwidthSavingsUsingDFSReplicationTotal,
 			bytesReceivedTotal,
 			compressedSizeOfFilesReceivedTotal,
@@ -163,7 +177,7 @@ func (c *Collector) Build(logger *slog.Logger, _ *mi.Session) error {
 	}
 
 	if slices.Contains(c.config.CollectorsEnabled, "folder") {
-		c.perfDataCollectorFolder, err = perfdata.NewCollector("DFS Replicated Folders", perfdata.InstanceAll, []string{
+		c.perfDataCollectorFolder, err = perfdata.NewCollector("DFS Replicated Folders", perfdata.InstancesAll, []string{
 			bandwidthSavingsUsingDFSReplicationTotal,
 			compressedSizeOfFilesReceivedTotal,
 			conflictBytesCleanedUpTotal,
@@ -198,7 +212,7 @@ func (c *Collector) Build(logger *slog.Logger, _ *mi.Session) error {
 	}
 
 	if slices.Contains(c.config.CollectorsEnabled, "volume") {
-		c.perfDataCollectorVolume, err = perfdata.NewCollector("DFS Replication Service Volumes", perfdata.InstanceAll, []string{
+		c.perfDataCollectorVolume, err = perfdata.NewCollector("DFS Replication Service Volumes", perfdata.InstancesAll, []string{
 			databaseCommitsTotal,
 			databaseLookupsTotal,
 			usnJournalRecordsReadTotal,
@@ -529,7 +543,7 @@ func (c *Collector) collectPDHConnection(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for DFS Replication Connections returned empty result set")
+		return fmt.Errorf("failed to collect DFS Replication Connections metrics: %w", types.ErrNoData)
 	}
 
 	for name, connection := range perfData {
@@ -607,7 +621,7 @@ func (c *Collector) collectPDHFolder(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for DFS Replicated Folders returned empty result set")
+		return fmt.Errorf("failed to collect DFS Replicated Folders metrics: %w", types.ErrNoData)
 	}
 
 	for name, folder := range perfData {
@@ -811,7 +825,7 @@ func (c *Collector) collectPDHVolume(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for DFS Replication Volumes returned empty result set")
+		return fmt.Errorf("failed to collect DFS Replication Volumes metrics: %w", types.ErrNoData)
 	}
 
 	for name, volume := range perfData {

internal/collector/dfsr/dfsr_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package dfsr_test

internal/collector/dhcp/const.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package dhcp

internal/collector/dhcp/dhcp.go

@@ -1,9 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package dhcp
 
 import (
-	"errors"
 	"fmt"
 	"log/slog"
 
@@ -18,6 +30,7 @@ const Name = "dhcp"
 
 type Config struct{}
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{}
 
 // A Collector is a Prometheus Collector perflib DHCP metrics.
@@ -82,7 +95,7 @@ func (c *Collector) Close() error {
 func (c *Collector) Build(_ *slog.Logger, _ *mi.Session) error {
 	var err error
 
-	c.perfDataCollector, err = perfdata.NewCollector("DHCP Server", perfdata.InstanceAll, []string{
+	c.perfDataCollector, err = perfdata.NewCollector("DHCP Server", nil, []string{
 		acksTotal,
 		activeQueueLength,
 		conflictCheckQueueLength,
@@ -273,9 +286,9 @@ func (c *Collector) Collect(ch chan<- prometheus.Metric) error {
 		return fmt.Errorf("failed to collect DHCP Server metrics: %w", err)
 	}
 
-	data, ok := perfData[perfdata.EmptyInstance]
+	data, ok := perfData[perfdata.InstanceEmpty]
 	if !ok {
-		return errors.New("perflib query for DHCP Server returned empty result set")
+		return fmt.Errorf("failed to collect DHCP Server metrics: %w", types.ErrNoData)
 	}
 
 	ch <- prometheus.MustNewConstMetric(

internal/collector/dhcp/dhcp_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package dhcp_test

internal/collector/diskdrive/diskdrive.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package diskdrive
@@ -18,6 +31,7 @@ const Name = "diskdrive"
 
 type Config struct{}
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{}
 
 // A Collector is a Prometheus Collector for a few WMI metrics in Win32_DiskDrive.
@@ -106,6 +120,11 @@ func (c *Collector) Build(_ *slog.Logger, miSession *mi.Session) error {
 		nil,
 	)
 
+	var dst []diskDrive
+	if err := c.miSession.Query(&dst, mi.NamespaceRootCIMv2, c.miQuery); err != nil {
+		return fmt.Errorf("WMI query failed: %w", err)
+	}
+
 	return nil
 }
 
@@ -120,6 +139,7 @@ type diskDrive struct {
 	Availability uint16 `mi:"Availability"`
 }
 
+//nolint:gochecknoglobals
 var (
 	allDiskStatus = []string{
 		"OK",

internal/collector/diskdrive/diskdrive_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package diskdrive_test

internal/collector/dns/const.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package dns

internal/collector/dns/dns.go

@@ -1,9 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package dns
 
 import (
-	"errors"
 	"fmt"
 	"log/slog"
 
@@ -18,6 +30,7 @@ const Name = "dns"
 
 type Config struct{}
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{}
 
 // A Collector is a Prometheus Collector for WMI Win32_PerfRawData_DNS_DNS metrics.
@@ -79,7 +92,7 @@ func (c *Collector) Close() error {
 func (c *Collector) Build(_ *slog.Logger, _ *mi.Session) error {
 	var err error
 
-	c.perfDataCollector, err = perfdata.NewCollector("DNS", perfdata.InstanceAll, []string{
+	c.perfDataCollector, err = perfdata.NewCollector("DNS", perfdata.InstancesAll, []string{
 		axfrRequestReceived,
 		axfrRequestSent,
 		axfrResponseReceived,
@@ -269,9 +282,9 @@ func (c *Collector) Collect(ch chan<- prometheus.Metric) error {
 		return fmt.Errorf("failed to collect DNS metrics: %w", err)
 	}
 
-	data, ok := perfData[perfdata.EmptyInstance]
+	data, ok := perfData[perfdata.InstanceEmpty]
 	if !ok {
-		return errors.New("perflib query for DNS returned empty result set")
+		return fmt.Errorf("failed to collect DNS metrics: %w", types.ErrNoData)
 	}
 
 	ch <- prometheus.MustNewConstMetric(

internal/collector/dns/dns_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package dns_test

internal/collector/exchange/exchange.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package exchange
@@ -34,6 +47,7 @@ type Config struct {
 	CollectorsEnabled []string `yaml:"collectors_enabled"`
 }
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{
 	CollectorsEnabled: []string{
 		adAccessProcesses,

internal/collector/exchange/exchange_active_sync.go

@@ -1,9 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -26,7 +38,7 @@ func (c *Collector) buildActiveSync() error {
 
 	var err error
 
-	c.perfDataCollectorActiveSync, err = perfdata.NewCollector("MSExchange ActiveSync", perfdata.InstanceAll, counters)
+	c.perfDataCollectorActiveSync, err = perfdata.NewCollector("MSExchange ActiveSync", perfdata.InstancesAll, counters)
 	if err != nil {
 		return fmt.Errorf("failed to create MSExchange ActiveSync collector: %w", err)
 	}
@@ -60,7 +72,7 @@ func (c *Collector) collectActiveSync(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange ActiveSync returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange ActiveSync metrics: %w", types.ErrNoData)
 	}
 
 	for _, data := range perfData {

internal/collector/exchange/exchange_ad_access_processes.go

@@ -1,9 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -30,7 +42,7 @@ func (c *Collector) buildADAccessProcesses() error {
 
 	var err error
 
-	c.perfDataCollectorADAccessProcesses, err = perfdata.NewCollector("MSExchange ADAccess Processes", perfdata.InstanceAll, counters)
+	c.perfDataCollectorADAccessProcesses, err = perfdata.NewCollector("MSExchange ADAccess Processes", perfdata.InstancesAll, counters)
 	if err != nil {
 		return fmt.Errorf("failed to create MSExchange ADAccess Processes collector: %w", err)
 	}
@@ -76,7 +88,7 @@ func (c *Collector) collectADAccessProcesses(ch chan<- prometheus.Metric) error
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange ADAccess Processes returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange ADAccess Processes metrics: %w", types.ErrNoData)
 	}
 
 	labelUseCount := make(map[string]int)

internal/collector/exchange/exchange_autodiscover.go

@@ -1,9 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -18,7 +30,7 @@ func (c *Collector) buildAutoDiscover() error {
 
 	var err error
 
-	c.perfDataCollectorAutoDiscover, err = perfdata.NewCollector("MSExchange Autodiscover", perfdata.InstanceAll, counters)
+	c.perfDataCollectorAutoDiscover, err = perfdata.NewCollector("MSExchange Autodiscover", perfdata.InstancesAll, counters)
 	if err != nil {
 		return fmt.Errorf("failed to create MSExchange Autodiscover collector: %w", err)
 	}
@@ -40,7 +52,7 @@ func (c *Collector) collectAutoDiscover(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange Autodiscover returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange Autodiscover metrics: %w", types.ErrNoData)
 	}
 
 	for _, data := range perfData {

internal/collector/exchange/exchange_availability_service.go

@@ -1,9 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -18,7 +30,7 @@ func (c *Collector) buildAvailabilityService() error {
 
 	var err error
 
-	c.perfDataCollectorAvailabilityService, err = perfdata.NewCollector("MSExchange Availability Service", perfdata.InstanceAll, counters)
+	c.perfDataCollectorAvailabilityService, err = perfdata.NewCollector("MSExchange Availability Service", perfdata.InstancesAll, counters)
 	if err != nil {
 		return fmt.Errorf("failed to create MSExchange Availability Service collector: %w", err)
 	}
@@ -40,7 +52,7 @@ func (c *Collector) collectAvailabilityService(ch chan<- prometheus.Metric) erro
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange Availability Service returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange Availability Service metrics: %w", types.ErrNoData)
 	}
 
 	for _, data := range perfData {

internal/collector/exchange/exchange_http_proxy.go

@@ -1,9 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -32,7 +44,7 @@ func (c *Collector) buildHTTPProxy() error {
 
 	var err error
 
-	c.perfDataCollectorHttpProxy, err = perfdata.NewCollector("MSExchange HttpProxy", perfdata.InstanceAll, counters)
+	c.perfDataCollectorHttpProxy, err = perfdata.NewCollector("MSExchange HttpProxy", perfdata.InstancesAll, counters)
 	if err != nil {
 		return fmt.Errorf("failed to create MSExchange HttpProxy collector: %w", err)
 	}
@@ -84,7 +96,7 @@ func (c *Collector) collectHTTPProxy(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange HttpProxy Service returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange HttpProxy Service metrics: %w", types.ErrNoData)
 	}
 
 	for name, data := range perfData {

internal/collector/exchange/exchange_mapi_http_emsmdb.go

@@ -1,9 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -22,7 +34,7 @@ func (c *Collector) buildMapiHttpEmsmdb() error {
 
 	var err error
 
-	c.perfDataCollectorMapiHttpEmsmdb, err = perfdata.NewCollector("MSExchange MapiHttp Emsmdb", perfdata.InstanceAll, counters)
+	c.perfDataCollectorMapiHttpEmsmdb, err = perfdata.NewCollector("MSExchange MapiHttp Emsmdb", perfdata.InstancesAll, counters)
 	if err != nil {
 		return fmt.Errorf("failed to create MSExchange MapiHttp Emsmdb: %w", err)
 	}
@@ -44,7 +56,7 @@ func (c *Collector) collectMapiHttpEmsmdb(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange MapiHttp Emsmdb returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange MapiHttp Emsmdb metrics: %w", types.ErrNoData)
 	}
 
 	for _, data := range perfData {

internal/collector/exchange/exchange_outlook_web_access.go

@@ -1,9 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -24,7 +36,7 @@ func (c *Collector) buildOWA() error {
 
 	var err error
 
-	c.perfDataCollectorOWA, err = perfdata.NewCollector("MSExchange OWA", perfdata.InstanceAll, counters)
+	c.perfDataCollectorOWA, err = perfdata.NewCollector("MSExchange OWA", perfdata.InstancesAll, counters)
 	if err != nil {
 		return fmt.Errorf("failed to create MSExchange OWA collector: %w", err)
 	}
@@ -52,7 +64,7 @@ func (c *Collector) collectOWA(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange OWA returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange OWA metrics: %w", types.ErrNoData)
 	}
 
 	for _, data := range perfData {

internal/collector/exchange/exchange_rpc_client_access.go

@@ -1,9 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -32,7 +44,7 @@ func (c *Collector) buildRPC() error {
 
 	var err error
 
-	c.perfDataCollectorRpcClientAccess, err = perfdata.NewCollector("MSExchange RpcClientAccess", perfdata.InstanceAll, counters)
+	c.perfDataCollectorRpcClientAccess, err = perfdata.NewCollector("MSExchange RpcClientAccess", perfdata.InstancesAll, counters)
 	if err != nil {
 		return fmt.Errorf("failed to create MSExchange RpcClientAccess collector: %w", err)
 	}
@@ -84,7 +96,7 @@ func (c *Collector) collectRPC(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange RpcClientAccess returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange RpcClientAccess metrics: %w", types.ErrNoData)
 	}
 
 	for _, data := range perfData {

internal/collector/exchange/exchange_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package exchange_test

internal/collector/exchange/exchange_transport_queues.go

@@ -1,9 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -58,7 +70,7 @@ func (c *Collector) buildTransportQueues() error {
 
 	var err error
 
-	c.perfDataCollectorTransportQueues, err = perfdata.NewCollector("MSExchangeTransport Queues", perfdata.InstanceAll, counters)
+	c.perfDataCollectorTransportQueues, err = perfdata.NewCollector("MSExchangeTransport Queues", perfdata.InstancesAll, counters)
 	if err != nil {
 		return fmt.Errorf("failed to create MSExchangeTransport Queues collector: %w", err)
 	}
@@ -188,7 +200,7 @@ func (c *Collector) collectTransportQueues(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchangeTransport Queues returned empty result set")
+		return fmt.Errorf("failed to collect MSExchangeTransport Queues metrics: %w", types.ErrNoData)
 	}
 
 	for name, data := range perfData {

internal/collector/exchange/exchange_workload_management.go

@@ -1,9 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -30,7 +42,7 @@ func (c *Collector) buildWorkloadManagementWorkloads() error {
 
 	var err error
 
-	c.perfDataCollectorWorkloadManagementWorkloads, err = perfdata.NewCollector("MSExchange WorkloadManagement Workloads", perfdata.InstanceAll, counters)
+	c.perfDataCollectorWorkloadManagementWorkloads, err = perfdata.NewCollector("MSExchange WorkloadManagement Workloads", perfdata.InstancesAll, counters)
 	if err != nil {
 		return fmt.Errorf("failed to create MSExchange WorkloadManagement Workloads collector: %w", err)
 	}
@@ -76,7 +88,7 @@ func (c *Collector) collectWorkloadManagementWorkloads(ch chan<- prometheus.Metr
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange WorkloadManagement Workloads returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange WorkloadManagement Workloads metrics: %w", types.ErrNoData)
 	}
 
 	for name, data := range perfData {

internal/collector/filetime/filetime.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package filetime
@@ -23,6 +36,7 @@ type Config struct {
 	FilePatterns []string
 }
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{
 	FilePatterns: []string{},
 }

internal/collector/filetime/filetime_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package filetime_test

internal/collector/fsrmquota/fsrmquota.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package fsrmquota
@@ -18,6 +31,7 @@ const Name = "fsrmquota"
 
 type Config struct{}
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{}
 
 type Collector struct {
@@ -129,30 +143,32 @@ func (c *Collector) Build(_ *slog.Logger, miSession *mi.Session) error {
 		nil,
 	)
 
+	var dst []msftFSRMQuota
+	if err := c.miSession.Query(&dst, mi.NamespaceRootWindowsFSRM, c.miQuery); err != nil {
+		return fmt.Errorf("WMI query failed: %w", err)
+	}
+
 	return nil
 }
 
 // MSFT_FSRMQuota docs:
 // https://docs.microsoft.com/en-us/previous-versions/windows/desktop/fsrm/msft-fsrmquota
-type MSFT_FSRMQuota struct {
-	Name string `mi:"Name"`
-
-	Path        string `mi:"Path"`
-	PeakUsage   uint64 `mi:"PeakUsage"`
-	Size        uint64 `mi:"Size"`
-	Usage       uint64 `mi:"Usage"`
-	Description string `mi:"Description"`
-	Template    string `mi:"Template"`
-	// Threshold string `mi:"Threshold"`
-	Disabled        bool `mi:"Disabled"`
-	MatchesTemplate bool `mi:"MatchesTemplate"`
-	SoftLimit       bool `mi:"SoftLimit"`
+type msftFSRMQuota struct {
+	Path            string `mi:"Path"`
+	PeakUsage       uint64 `mi:"PeakUsage"`
+	Size            uint64 `mi:"Size"`
+	Usage           uint64 `mi:"Usage"`
+	Description     string `mi:"Description"`
+	Template        string `mi:"Template"`
+	Disabled        bool   `mi:"Disabled"`
+	MatchesTemplate bool   `mi:"MatchesTemplate"`
+	SoftLimit       bool   `mi:"SoftLimit"`
 }
 
 // Collect sends the metric values for each metric
 // to the provided prometheus Metric channel.
 func (c *Collector) Collect(ch chan<- prometheus.Metric) error {
-	var dst []MSFT_FSRMQuota
+	var dst []msftFSRMQuota
 	if err := c.miSession.Query(&dst, mi.NamespaceRootWindowsFSRM, c.miQuery); err != nil {
 		return fmt.Errorf("WMI query failed: %w", err)
 	}

internal/collector/fsrmquota/fsrmquota_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package fsrmquota_test

internal/collector/hyperv/hyperv.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package hyperv
@@ -12,7 +25,9 @@ import (
 
 	"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 (
@@ -39,6 +54,7 @@ type Config struct {
 	CollectorsEnabled []string `yaml:"collectors_enabled"`
 }
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{
 	CollectorsEnabled: []string{
 		subCollectorDataStore,
@@ -141,15 +157,19 @@ 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()
+		build          func() error
+		collect        func(ch chan<- prometheus.Metric) error
+		close          func()
+		minBuildNumber uint32
 	}{
 		subCollectorDataStore: {
-			build:   c.buildDataStore,
-			collect: c.collectDataStore,
-			close:   c.perfDataCollectorDataStore.Close,
+			build:          c.buildDataStore,
+			collect:        c.collectDataStore,
+			close:          c.perfDataCollectorDataStore.Close,
+			minBuildNumber: types.BuildNumberWindowsServer2022,
 		},
 		subCollectorDynamicMemoryBalancer: {
 			build:   c.buildDynamicMemoryBalancer,
@@ -226,20 +246,30 @@ func (c *Collector) Build(_ *slog.Logger, _ *mi.Session) error {
 	// Result must order, to prevent test failures.
 	sort.Strings(c.config.CollectorsEnabled)
 
+	errs := make([]error, 0, len(c.config.CollectorsEnabled))
+
 	for _, name := range c.config.CollectorsEnabled {
 		if _, ok := subCollectors[name]; !ok {
 			return fmt.Errorf("unknown collector: %s", name)
 		}
 
+		if version.BuildNumber < subCollectors[name].minBuildNumber {
+			errs = append(errs, fmt.Errorf("collector %s requires Windows Server 2022 or newer", name))
+
+			continue
+		}
+
 		if err := subCollectors[name].build(); err != nil {
-			return fmt.Errorf("failed to build %s collector: %w", name, err)
+			errs = append(errs, fmt.Errorf("failed to build %s collector: %w", name, err))
+
+			continue
 		}
 
 		c.collectorFns = append(c.collectorFns, subCollectors[name].collect)
 		c.closeFns = append(c.closeFns, subCollectors[name].close)
 	}
 
-	return nil
+	return errors.Join(errs...)
 }
 
 // Collect sends the metric values for each metric

internal/collector/hyperv/hyperv_datastore.go

@@ -1,7 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
 package hyperv
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -114,7 +128,7 @@ const (
 func (c *Collector) buildDataStore() error {
 	var err error
 
-	c.perfDataCollectorDataStore, err = perfdata.NewCollector("Hyper-V DataStore", perfdata.InstanceAll, []string{
+	c.perfDataCollectorDataStore, err = perfdata.NewCollector("Hyper-V DataStore", perfdata.InstancesAll, []string{
 		dataStoreFragmentationRatio,
 		dataStoreSectorSize,
 		dataStoreDataAlignment,
@@ -162,7 +176,7 @@ func (c *Collector) buildDataStore() error {
 		dataStoreSetOperationLatencyMicro,
 		dataStoreSetOperationCount,
 	})
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to create Hyper-V DataStore collector: %w", err)
 	}
 
@@ -448,7 +462,7 @@ func (c *Collector) buildDataStore() error {
 
 func (c *Collector) collectDataStore(ch chan<- prometheus.Metric) error {
 	data, err := c.perfDataCollectorDataStore.Collect()
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to collect Hyper-V DataStore metrics: %w", err)
 	}
 

internal/collector/hyperv/hyperv_dynamic_memory_balancer.go

@@ -1,3 +1,18 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
 package hyperv
 
 import (
@@ -30,7 +45,7 @@ func (c *Collector) buildDynamicMemoryBalancer() error {
 	var err error
 
 	// https://learn.microsoft.com/en-us/archive/blogs/chrisavis/monitoring-dynamic-memory-in-windows-server-hyper-v-2012
-	c.perfDataCollectorDynamicMemoryBalancer, err = perfdata.NewCollector("Hyper-V Dynamic Memory Balancer", perfdata.InstanceAll, []string{
+	c.perfDataCollectorDynamicMemoryBalancer, err = perfdata.NewCollector("Hyper-V Dynamic Memory Balancer", perfdata.InstancesAll, []string{
 		vmDynamicMemoryBalancerAvailableMemory,
 		vmDynamicMemoryBalancerAvailableMemoryForBalancing,
 		vmDynamicMemoryBalancerAveragePressure,

internal/collector/hyperv/hyperv_dynamic_memory_vm.go

@@ -1,7 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
 package hyperv
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -42,7 +56,7 @@ const (
 func (c *Collector) buildDynamicMemoryVM() error {
 	var err error
 
-	c.perfDataCollectorDynamicMemoryVM, err = perfdata.NewCollector("Hyper-V Dynamic Memory VM", perfdata.InstanceAll, []string{
+	c.perfDataCollectorDynamicMemoryVM, err = perfdata.NewCollector("Hyper-V Dynamic Memory VM", perfdata.InstancesAll, []string{
 		vmMemoryAddedMemory,
 		vmMemoryCurrentPressure,
 		vmMemoryGuestVisiblePhysicalMemory,
@@ -54,7 +68,7 @@ func (c *Collector) buildDynamicMemoryVM() error {
 		vmMemoryRemovedMemory,
 		vmMemoryGuestAvailableMemory,
 	})
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to create Hyper-V Dynamic Memory VM collector: %w", err)
 	}
 
@@ -124,7 +138,7 @@ func (c *Collector) buildDynamicMemoryVM() error {
 
 func (c *Collector) collectDynamicMemoryVM(ch chan<- prometheus.Metric) error {
 	data, err := c.perfDataCollectorDynamicMemoryVM.Collect()
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to collect Hyper-V Dynamic Memory VM metrics: %w", err)
 	}
 

internal/collector/hyperv/hyperv_hypervisor_logical_processor.go

@@ -1,3 +1,18 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
 package hyperv
 
 import (
@@ -32,7 +47,7 @@ const (
 func (c *Collector) buildHypervisorLogicalProcessor() error {
 	var err error
 
-	c.perfDataCollectorHypervisorLogicalProcessor, err = perfdata.NewCollector("Hyper-V Hypervisor Logical Processor", perfdata.InstanceAll, []string{
+	c.perfDataCollectorHypervisorLogicalProcessor, err = perfdata.NewCollector("Hyper-V Hypervisor Logical Processor", perfdata.InstancesAll, []string{
 		hypervisorLogicalProcessorGuestRunTimePercent,
 		hypervisorLogicalProcessorHypervisorRunTimePercent,
 		hypervisorLogicalProcessorTotalRunTimePercent,

internal/collector/hyperv/hyperv_hypervisor_root_partition.go

@@ -1,3 +1,18 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
 package hyperv
 
 import (

internal/collector/hyperv/hyperv_hypervisor_root_virtual_processor.go

@@ -1,3 +1,18 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
 package hyperv
 
 import (
@@ -35,7 +50,7 @@ const (
 func (c *Collector) buildHypervisorRootVirtualProcessor() error {
 	var err error
 
-	c.perfDataCollectorHypervisorRootVirtualProcessor, err = perfdata.NewCollector("Hyper-V Hypervisor Root Virtual Processor", perfdata.InstanceAll, []string{
+	c.perfDataCollectorHypervisorRootVirtualProcessor, err = perfdata.NewCollector("Hyper-V Hypervisor Root Virtual Processor", perfdata.InstancesAll, []string{
 		hypervisorRootVirtualProcessorGuestIdleTimePercent,
 		hypervisorRootVirtualProcessorGuestRunTimePercent,
 		hypervisorRootVirtualProcessorHypervisorRunTimePercent,

internal/collector/hyperv/hyperv_hypervisor_virtual_processor.go

@@ -1,7 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
 package hyperv
 
 import (
-	"errors"
 	"fmt"
 	"strings"
 
@@ -35,7 +49,7 @@ const (
 func (c *Collector) buildHypervisorVirtualProcessor() error {
 	var err error
 
-	c.perfDataCollectorHypervisorVirtualProcessor, err = perfdata.NewCollector("Hyper-V Hypervisor Virtual Processor", perfdata.InstanceAll, []string{
+	c.perfDataCollectorHypervisorVirtualProcessor, err = perfdata.NewCollector("Hyper-V Hypervisor Virtual Processor", perfdata.InstancesAll, []string{
 		hypervisorVirtualProcessorGuestRunTimePercent,
 		hypervisorVirtualProcessorGuestIdleTimePercent,
 		hypervisorVirtualProcessorHypervisorRunTimePercent,
@@ -43,7 +57,7 @@ func (c *Collector) buildHypervisorVirtualProcessor() error {
 		hypervisorVirtualProcessorRemoteRunTimePercent,
 		hypervisorVirtualProcessorCPUWaitTimePerDispatch,
 	})
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to create Hyper-V Hypervisor Virtual Processor collector: %w", err)
 	}
 
@@ -71,7 +85,7 @@ func (c *Collector) buildHypervisorVirtualProcessor() error {
 
 func (c *Collector) collectHypervisorVirtualProcessor(ch chan<- prometheus.Metric) error {
 	data, err := c.perfDataCollectorHypervisorVirtualProcessor.Collect()
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to collect Hyper-V Hypervisor Virtual Processor metrics: %w", err)
 	}
 

internal/collector/hyperv/hyperv_legacy_network_adapter.go

@@ -1,7 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
 package hyperv
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -33,7 +47,7 @@ const (
 func (c *Collector) buildLegacyNetworkAdapter() error {
 	var err error
 
-	c.perfDataCollectorLegacyNetworkAdapter, err = perfdata.NewCollector("Hyper-V Legacy Network Adapter", perfdata.InstanceAll, []string{
+	c.perfDataCollectorLegacyNetworkAdapter, err = perfdata.NewCollector("Hyper-V Legacy Network Adapter", perfdata.InstancesAll, []string{
 		legacyNetworkAdapterBytesDropped,
 		legacyNetworkAdapterBytesReceived,
 		legacyNetworkAdapterBytesSent,
@@ -41,7 +55,7 @@ func (c *Collector) buildLegacyNetworkAdapter() error {
 		legacyNetworkAdapterFramesReceived,
 		legacyNetworkAdapterFramesSent,
 	})
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to create Hyper-V Legacy Network Adapter collector: %w", err)
 	}
 
@@ -87,7 +101,7 @@ func (c *Collector) buildLegacyNetworkAdapter() error {
 
 func (c *Collector) collectLegacyNetworkAdapter(ch chan<- prometheus.Metric) error {
 	data, err := c.perfDataCollectorLegacyNetworkAdapter.Collect()
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to collect Hyper-V Legacy Network Adapter metrics: %w", err)
 	}
 

internal/collector/hyperv/hyperv_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package hyperv_test

internal/collector/hyperv/hyperv_virtual_machine_health_summary.go

@@ -1,3 +1,18 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
 package hyperv
 
 import (
@@ -51,7 +66,7 @@ func (c *Collector) collectVirtualMachineHealthSummary(ch chan<- prometheus.Metr
 		return fmt.Errorf("failed to collect Hyper-V Virtual Machine Health Summary metrics: %w", err)
 	}
 
-	healthData, ok := data[perfdata.EmptyInstance]
+	healthData, ok := data[perfdata.InstanceEmpty]
 	if !ok {
 		return errors.New("no data returned for Hyper-V Virtual Machine Health Summary")
 	}

internal/collector/hyperv/hyperv_virtual_machine_vid_partition.go

@@ -1,7 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
 package hyperv
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -26,12 +40,12 @@ const (
 func (c *Collector) buildVirtualMachineVidPartition() error {
 	var err error
 
-	c.perfDataCollectorVirtualMachineVidPartition, err = perfdata.NewCollector("Hyper-V VM Vid Partition", perfdata.InstanceAll, []string{
+	c.perfDataCollectorVirtualMachineVidPartition, err = perfdata.NewCollector("Hyper-V VM Vid Partition", perfdata.InstancesAll, []string{
 		physicalPagesAllocated,
 		preferredNUMANodeIndex,
 		remotePhysicalPages,
 	})
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to create Hyper-V VM Vid Partition collector: %w", err)
 	}
 
@@ -59,7 +73,7 @@ func (c *Collector) buildVirtualMachineVidPartition() error {
 
 func (c *Collector) collectVirtualMachineVidPartition(ch chan<- prometheus.Metric) error {
 	data, err := c.perfDataCollectorVirtualMachineVidPartition.Collect()
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to collect Hyper-V VM Vid Partition metrics: %w", err)
 	}
 

internal/collector/hyperv/hyperv_virtual_network_adapter.go

@@ -1,7 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
 package hyperv
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -33,7 +47,7 @@ const (
 func (c *Collector) buildVirtualNetworkAdapter() error {
 	var err error
 
-	c.perfDataCollectorVirtualNetworkAdapter, err = perfdata.NewCollector("Hyper-V Virtual Network Adapter", perfdata.InstanceAll, []string{
+	c.perfDataCollectorVirtualNetworkAdapter, err = perfdata.NewCollector("Hyper-V Virtual Network Adapter", perfdata.InstancesAll, []string{
 		virtualNetworkAdapterBytesReceived,
 		virtualNetworkAdapterBytesSent,
 		virtualNetworkAdapterDroppedPacketsIncoming,
@@ -41,7 +55,7 @@ func (c *Collector) buildVirtualNetworkAdapter() error {
 		virtualNetworkAdapterPacketsReceived,
 		virtualNetworkAdapterPacketsSent,
 	})
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to create Hyper-V Virtual Network Adapter collector: %w", err)
 	}
 
@@ -87,7 +101,7 @@ func (c *Collector) buildVirtualNetworkAdapter() error {
 
 func (c *Collector) collectVirtualNetworkAdapter(ch chan<- prometheus.Metric) error {
 	data, err := c.perfDataCollectorVirtualNetworkAdapter.Collect()
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to collect Hyper-V Virtual Network Adapter metrics: %w", err)
 	}
 

internal/collector/hyperv/hyperv_virtual_network_adapter_drop_reasons.go

@@ -1,7 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
 package hyperv
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -148,7 +162,7 @@ const (
 func (c *Collector) buildVirtualNetworkAdapterDropReasons() error {
 	var err error
 
-	c.perfDataCollectorVirtualNetworkAdapterDropReasons, err = perfdata.NewCollector("Hyper-V Virtual Network Adapter Drop Reasons", perfdata.InstanceAll, []string{
+	c.perfDataCollectorVirtualNetworkAdapterDropReasons, err = perfdata.NewCollector("Hyper-V Virtual Network Adapter Drop Reasons", perfdata.InstancesAll, []string{
 		virtualNetworkAdapterDropReasonsOutgoingNativeFwdingReq,
 		virtualNetworkAdapterDropReasonsIncomingNativeFwdingReq,
 		virtualNetworkAdapterDropReasonsOutgoingMTUMismatch,
@@ -200,7 +214,7 @@ func (c *Collector) buildVirtualNetworkAdapterDropReasons() error {
 		virtualNetworkAdapterDropReasonsOutgoingUnknown,
 		virtualNetworkAdapterDropReasonsIncomingUnknown,
 	})
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to create Hyper-V Virtual Network Adapter Drop Reasons collector: %w", err)
 	}
 
@@ -216,7 +230,7 @@ func (c *Collector) buildVirtualNetworkAdapterDropReasons() error {
 
 func (c *Collector) collectVirtualNetworkAdapterDropReasons(ch chan<- prometheus.Metric) error {
 	data, err := c.perfDataCollectorVirtualNetworkAdapterDropReasons.Collect()
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to collect Hyper-V Virtual Network Adapter Drop Reasons metrics: %w", err)
 	}
 

internal/collector/hyperv/hyperv_virtual_smb.go

@@ -1,7 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
 package hyperv
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -55,7 +69,7 @@ const (
 func (c *Collector) buildVirtualSMB() error {
 	var err error
 
-	c.perfDataCollectorVirtualSMB, err = perfdata.NewCollector("Hyper-V Virtual SMB", perfdata.InstanceAll, []string{
+	c.perfDataCollectorVirtualSMB, err = perfdata.NewCollector("Hyper-V Virtual SMB", perfdata.InstancesAll, []string{
 		virtualSMBDirectMappedSections,
 		virtualSMBDirectMappedPages,
 		virtualSMBWriteBytesRDMA,
@@ -74,7 +88,7 @@ func (c *Collector) buildVirtualSMB() error {
 		virtualSMBSentBytes,
 		virtualSMBReceivedBytes,
 	})
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to create Hyper-V Virtual SMB collector: %w", err)
 	}
 
@@ -186,7 +200,7 @@ func (c *Collector) buildVirtualSMB() error {
 
 func (c *Collector) collectVirtualSMB(ch chan<- prometheus.Metric) error {
 	data, err := c.perfDataCollectorVirtualSMB.Collect()
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to collect Hyper-V Virtual SMB metrics: %w", err)
 	}
 

internal/collector/hyperv/hyperv_virtual_storage_device.go

@@ -1,7 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
 package hyperv
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -45,7 +59,7 @@ const (
 func (c *Collector) buildVirtualStorageDevice() error {
 	var err error
 
-	c.perfDataCollectorVirtualStorageDevice, err = perfdata.NewCollector("Hyper-V Virtual Storage Device", perfdata.InstanceAll, []string{
+	c.perfDataCollectorVirtualStorageDevice, err = perfdata.NewCollector("Hyper-V Virtual Storage Device", perfdata.InstancesAll, []string{
 		virtualStorageDeviceErrorCount,
 		virtualStorageDeviceQueueLength,
 		virtualStorageDeviceReadBytes,
@@ -59,7 +73,7 @@ func (c *Collector) buildVirtualStorageDevice() error {
 		virtualStorageDeviceLowerLatency,
 		virtualStorageDeviceIOQuotaReplenishmentRate,
 	})
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to create Hyper-V Virtual Storage Device collector: %w", err)
 	}
 
@@ -141,7 +155,7 @@ func (c *Collector) buildVirtualStorageDevice() error {
 
 func (c *Collector) collectVirtualStorageDevice(ch chan<- prometheus.Metric) error {
 	data, err := c.perfDataCollectorVirtualStorageDevice.Collect()
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to collect Hyper-V Virtual Storage Device metrics: %w", err)
 	}
 

internal/collector/hyperv/hyperv_virtual_switch.go

@@ -1,7 +1,21 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
 package hyperv
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -62,7 +76,7 @@ const (
 func (c *Collector) buildVirtualSwitch() error {
 	var err error
 
-	c.perfDataCollectorVirtualSwitch, err = perfdata.NewCollector("Hyper-V Virtual Switch", perfdata.InstanceAll, []string{
+	c.perfDataCollectorVirtualSwitch, err = perfdata.NewCollector("Hyper-V Virtual Switch", perfdata.InstancesAll, []string{
 		virtualSwitchBroadcastPacketsReceived,
 		virtualSwitchBroadcastPacketsSent,
 		virtualSwitchBytes,
@@ -85,7 +99,7 @@ func (c *Collector) buildVirtualSwitch() error {
 		virtualSwitchPacketsSent,
 		virtualSwitchPurgedMacAddresses,
 	})
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to create Hyper-V Virtual Switch collector: %w", err)
 	}
 
@@ -221,7 +235,7 @@ func (c *Collector) buildVirtualSwitch() error {
 
 func (c *Collector) collectVirtualSwitch(ch chan<- prometheus.Metric) error {
 	data, err := c.perfDataCollectorVirtualSwitch.Collect()
-	if err != nil && !errors.Is(err, perfdata.ErrNoData) {
+	if err != nil {
 		return fmt.Errorf("failed to collect Hyper-V Virtual Switch metrics: %w", err)
 	}
 

internal/collector/iis/iis.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package iis
@@ -28,6 +41,7 @@ type Config struct {
 	AppExclude  *regexp.Regexp `yaml:"app_exclude"`
 }
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{
 	SiteInclude: types.RegExpAny,
 	SiteExclude: types.RegExpEmpty,
@@ -137,8 +151,8 @@ func (c *Collector) GetName() string {
 func (c *Collector) Close() error {
 	c.perfDataCollectorWebService.Close()
 	c.perfDataCollectorAppPoolWAS.Close()
-	c.perfDataCollectorW3SVCW3WP.Close()
-	c.perfDataCollectorWebServiceCache.Close()
+	c.w3SVCW3WPPerfDataCollector.Close()
+	c.serviceCachePerfDataCollector.Close()
 
 	return nil
 }
@@ -155,23 +169,25 @@ func (c *Collector) Build(logger *slog.Logger, _ *mi.Session) error {
 		prometheus.Labels{"version": fmt.Sprintf("%d.%d", c.iisVersion.major, c.iisVersion.minor)},
 	)
 
+	errs := make([]error, 0, 4)
+
 	if err := c.buildWebService(); err != nil {
-		return fmt.Errorf("failed to build Web Service collector: %w", err)
+		errs = append(errs, fmt.Errorf("failed to build Web Service collector: %w", err))
 	}
 
 	if err := c.buildAppPoolWAS(); err != nil {
-		return fmt.Errorf("failed to build APP_POOL_WAS collector: %w", err)
+		errs = append(errs, fmt.Errorf("failed to build APP_POOL_WAS collector: %w", err))
 	}
 
 	if err := c.buildW3SVCW3WP(); err != nil {
-		return fmt.Errorf("failed to build W3SVC_W3WP collector: %w", err)
+		errs = append(errs, fmt.Errorf("failed to build W3SVC_W3WP collector: %w", err))
 	}
 
 	if err := c.buildWebServiceCache(); err != nil {
-		return fmt.Errorf("failed to build Web Service Cache collector: %w", err)
+		errs = append(errs, fmt.Errorf("failed to build Web Service Cache collector: %w", err))
 	}
 
-	return nil
+	return errors.Join(errs...)
 }
 
 type simpleVersion struct {
@@ -182,7 +198,7 @@ type simpleVersion struct {
 func (c *Collector) getIISVersion(logger *slog.Logger) simpleVersion {
 	k, err := registry.OpenKey(registry.LOCAL_MACHINE, `SOFTWARE\Microsoft\InetStp\`, registry.QUERY_VALUE)
 	if err != nil {
-		logger.Warn("Couldn't open registry to determine IIS version",
+		logger.Warn("couldn't open registry to determine IIS version",
 			slog.Any("err", err),
 		)
 
@@ -260,7 +276,7 @@ func (c *Collector) Collect(ch chan<- prometheus.Metric) error {
 // discarded, and "Site_B#2" would be kept and presented as "Site_B" in the
 // Collector metrics.
 // [ "Site_A", "Site_B", "Site_C", "Site_B#2" ].
-func deduplicateIISNames(counterValues map[string]map[string]perfdata.CounterValues) {
+func deduplicateIISNames(counterValues map[string]map[string]perfdata.CounterValue) {
 	services := slices.Collect(maps.Keys(counterValues))
 
 	// Ensure IIS entry with the highest suffix occurs last

internal/collector/iis/iis_app_pool_was.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package iis
@@ -44,6 +57,7 @@ const (
 	TotalWorkerProcessStartupFailures  = "Total Worker Process Startup Failures"
 )
 
+//nolint:gochecknoglobals
 var applicationStates = map[uint32]string{
 	1: "Uninitialized",
 	2: "Initialized",
@@ -57,7 +71,7 @@ var applicationStates = map[uint32]string{
 func (c *Collector) buildAppPoolWAS() error {
 	var err error
 
-	c.perfDataCollectorAppPoolWAS, err = perfdata.NewCollector("APP_POOL_WAS", perfdata.InstanceAll, []string{
+	c.perfDataCollectorAppPoolWAS, err = perfdata.NewCollector("APP_POOL_WAS", perfdata.InstancesAll, []string{
 		CurrentApplicationPoolState,
 		CurrentApplicationPoolUptime,
 		CurrentWorkerProcesses,

internal/collector/iis/iis_bench_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package iis_test

internal/collector/iis/iis_w3svc_w3wp.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package iis
@@ -13,399 +26,385 @@ import (
 )
 
 type collectorW3SVCW3WP struct {
-	perfDataCollectorW3SVCW3WP *perfdata.Collector
+	w3SVCW3WPPerfDataCollector *perfdata.Collector
 
 	// W3SVC_W3WP
-	threads        *prometheus.Desc
-	maximumThreads *prometheus.Desc
+	w3SVCW3WPThreads        *prometheus.Desc
+	w3SVCW3WPMaximumThreads *prometheus.Desc
 
-	requestsTotal  *prometheus.Desc
-	requestsActive *prometheus.Desc
+	w3SVCW3WPRequestsTotal  *prometheus.Desc
+	w3SVCW3WPRequestsActive *prometheus.Desc
 
-	activeFlushedEntries *prometheus.Desc
+	w3SVCW3WPActiveFlushedEntries *prometheus.Desc
 
-	currentFileCacheMemoryUsage *prometheus.Desc
-	maximumFileCacheMemoryUsage *prometheus.Desc
-	fileCacheFlushesTotal       *prometheus.Desc
-	fileCacheQueriesTotal       *prometheus.Desc
-	fileCacheHitsTotal          *prometheus.Desc
-	filesCached                 *prometheus.Desc
-	filesCachedTotal            *prometheus.Desc
-	filesFlushedTotal           *prometheus.Desc
+	w3SVCW3WPCurrentFileCacheMemoryUsage *prometheus.Desc
+	w3SVCW3WPMaximumFileCacheMemoryUsage *prometheus.Desc
+	w3SVCW3WPFileCacheFlushesTotal       *prometheus.Desc
+	w3SVCW3WPFileCacheQueriesTotal       *prometheus.Desc
+	w3SVCW3WPFileCacheHitsTotal          *prometheus.Desc
+	w3SVCW3WPFilesCached                 *prometheus.Desc
+	w3SVCW3WPFilesCachedTotal            *prometheus.Desc
+	w3SVCW3WPFilesFlushedTotal           *prometheus.Desc
 
-	uriCacheFlushesTotal *prometheus.Desc
-	uriCacheQueriesTotal *prometheus.Desc
-	uriCacheHitsTotal    *prometheus.Desc
-	urisCached           *prometheus.Desc
-	urisCachedTotal      *prometheus.Desc
-	urisFlushedTotal     *prometheus.Desc
+	w3SVCW3WPURICacheFlushesTotal *prometheus.Desc
+	w3SVCW3WPURICacheQueriesTotal *prometheus.Desc
+	w3SVCW3WPURICacheHitsTotal    *prometheus.Desc
+	w3SVCW3WPURIsCached           *prometheus.Desc
+	w3SVCW3WPURIsCachedTotal      *prometheus.Desc
+	w3SVCW3WPURIsFlushedTotal     *prometheus.Desc
 
-	metadataCached            *prometheus.Desc
-	metadataCacheFlushes      *prometheus.Desc
-	metadataCacheQueriesTotal *prometheus.Desc
-	metadataCacheHitsTotal    *prometheus.Desc
-	metadataCachedTotal       *prometheus.Desc
-	metadataFlushedTotal      *prometheus.Desc
+	w3SVCW3WPMetadataCached            *prometheus.Desc
+	w3SVCW3WPMetadataCacheFlushes      *prometheus.Desc
+	w3SVCW3WPMetadataCacheQueriesTotal *prometheus.Desc
+	w3SVCW3WPMetadataCacheHitsTotal    *prometheus.Desc
+	w3SVCW3WPMetadataCachedTotal       *prometheus.Desc
+	w3SVCW3WPMetadataFlushedTotal      *prometheus.Desc
 
-	outputCacheActiveFlushedItems *prometheus.Desc
-	outputCacheItems              *prometheus.Desc
-	outputCacheMemoryUsage        *prometheus.Desc
-	outputCacheQueriesTotal       *prometheus.Desc
-	outputCacheHitsTotal          *prometheus.Desc
-	outputCacheFlushedItemsTotal  *prometheus.Desc
-	outputCacheFlushesTotal       *prometheus.Desc
+	w3SVCW3WPOutputCacheActiveFlushedItems *prometheus.Desc
+	w3SVCW3WPOutputCacheItems              *prometheus.Desc
+	w3SVCW3WPOutputCacheMemoryUsage        *prometheus.Desc
+	w3SVCW3WPOutputCacheQueriesTotal       *prometheus.Desc
+	w3SVCW3WPOutputCacheHitsTotal          *prometheus.Desc
+	w3SVCW3WPOutputCacheFlushedItemsTotal  *prometheus.Desc
+	w3SVCW3WPOutputCacheFlushesTotal       *prometheus.Desc
 
 	// IIS 8+ Only
-	requestErrorsTotal           *prometheus.Desc
-	webSocketRequestsActive      *prometheus.Desc
-	webSocketConnectionAttempts  *prometheus.Desc
-	webSocketConnectionsAccepted *prometheus.Desc
-	webSocketConnectionsRejected *prometheus.Desc
+	w3SVCW3WPRequestErrorsTotal           *prometheus.Desc
+	w3SVCW3WPWebSocketRequestsActive      *prometheus.Desc
+	w3SVCW3WPWebSocketConnectionAttempts  *prometheus.Desc
+	w3SVCW3WPWebSocketConnectionsAccepted *prometheus.Desc
+	w3SVCW3WPWebSocketConnectionsRejected *prometheus.Desc
 }
 
 var workerProcessNameExtractor = regexp.MustCompile(`^(\d+)_(.+)$`)
 
 const (
-	Threads        = "Active Threads Count"
-	MaximumThreads = "Maximum Threads Count"
+	w3SVCW3WPThreads        = "Active Threads Count"
+	w3SVCW3WPMaximumThreads = "Maximum Threads Count"
 
-	RequestsTotal  = "Total HTTP Requests Served"
-	RequestsActive = "Active Requests"
+	w3SVCW3WPRequestsTotal  = "Total HTTP Requests Served"
+	w3SVCW3WPRequestsActive = "Active Requests"
 
-	ActiveFlushedEntries = "Active Flushed Entries"
+	w3SVCW3WPActiveFlushedEntries = "Active Flushed Entries"
 
-	CurrentFileCacheMemoryUsage = "Current File Cache Memory Usage"
-	MaximumFileCacheMemoryUsage = "Maximum File Cache Memory Usage"
-	FileCacheFlushesTotal       = "File Cache Flushes"
-	FileCacheHitsTotal          = "File Cache Hits"
-	FileCacheMissesTotal        = "File Cache Misses"
-	FilesCached                 = "Current Files Cached"
-	FilesCachedTotal            = "Total Files Cached"
-	FilesFlushedTotal           = "Total Flushed Files"
+	w3SVCW3WPCurrentFileCacheMemoryUsage = "Current File Cache Memory Usage"
+	w3SVCW3WPMaximumFileCacheMemoryUsage = "Maximum File Cache Memory Usage"
+	w3SVCW3WPFileCacheFlushesTotal       = "File Cache Flushes"
+	w3SVCW3WPFileCacheHitsTotal          = "File Cache Hits"
+	w3SVCW3WPFileCacheMissesTotal        = "File Cache Misses"
+	w3SVCW3WPFilesCached                 = "Current Files Cached"
+	w3SVCW3WPFilesCachedTotal            = "Total Files Cached"
+	w3SVCW3WPFilesFlushedTotal           = "Total Flushed Files"
 
-	URICacheFlushesTotal       = "Total Flushed URIs"
-	URICacheFlushesTotalKernel = "Total Flushed URIs"
-	URIsFlushedTotalKernel     = "Kernel: Total Flushed URIs"
-	URICacheHitsTotal          = "URI Cache Hits"
-	URICacheHitsTotalKernel    = "Kernel: URI Cache Hits"
-	URICacheMissesTotal        = "URI Cache Misses"
-	URICacheMissesTotalKernel  = "Kernel: URI Cache Misses"
-	URIsCached                 = "Current URIs Cached"
-	URIsCachedKernel           = "Kernel: Current URIs Cached"
-	URIsCachedTotal            = "Total URIs Cached"
-	URIsCachedTotalKernel      = "Total URIs Cached"
-	URIsFlushedTotal           = "Total Flushed URIs"
+	w3SVCW3WPURICacheFlushesTotal = "Total Flushed URIs"
+	w3SVCW3WPURICacheHitsTotal    = "URI Cache Hits"
+	w3SVCW3WPURICacheMissesTotal  = "URI Cache Misses"
+	w3SVCW3WPURIsCached           = "Current URIs Cached"
+	w3SVCW3WPURIsCachedTotal      = "Total URIs Cached"
+	w3SVCW3WPURIsFlushedTotal     = "Total Flushed URIs"
 
-	MetaDataCacheHits    = "Metadata Cache Hits"
-	MetaDataCacheMisses  = "Metadata Cache Misses"
-	MetadataCached       = "Current Metadata Cached"
-	MetadataCacheFlushes = "Metadata Cache Flushes"
-	MetadataCachedTotal  = "Total Metadata Cached"
-	MetadataFlushedTotal = "Total Flushed Metadata"
+	w3SVCW3WPMetaDataCacheHits    = "Metadata Cache Hits"
+	w3SVCW3WPMetaDataCacheMisses  = "Metadata Cache Misses"
+	w3SVCW3WPMetadataCached       = "Current Metadata Cached"
+	w3SVCW3WPMetadataCacheFlushes = "Metadata Cache Flushes"
+	w3SVCW3WPMetadataCachedTotal  = "Total Metadata Cached"
+	w3SVCW3WPMetadataFlushedTotal = "Total Flushed Metadata"
 
-	OutputCacheActiveFlushedItems = "Output Cache Current Flushed Items"
-	OutputCacheItems              = "Output Cache Current Items"
-	OutputCacheMemoryUsage        = "Output Cache Current Memory Usage"
-	OutputCacheHitsTotal          = "Output Cache Total Hits"
-	OutputCacheMissesTotal        = "Output Cache Total Misses"
-	OutputCacheFlushedItemsTotal  = "Output Cache Total Flushed Items"
-	OutputCacheFlushesTotal       = "Output Cache Total Flushes"
+	w3SVCW3WPOutputCacheActiveFlushedItems = "Output Cache Current Flushed Items"
+	w3SVCW3WPOutputCacheItems              = "Output Cache Current Items"
+	w3SVCW3WPOutputCacheMemoryUsage        = "Output Cache Current Memory Usage"
+	w3SVCW3WPOutputCacheHitsTotal          = "Output Cache Total Hits"
+	w3SVCW3WPOutputCacheMissesTotal        = "Output Cache Total Misses"
+	w3SVCW3WPOutputCacheFlushedItemsTotal  = "Output Cache Total Flushed Items"
+	w3SVCW3WPOutputCacheFlushesTotal       = "Output Cache Total Flushes"
 
 	// IIS8
-	RequestErrors500 = "% 500 HTTP Response Sent"
-	RequestErrors503 = "% 503 HTTP Response Sent"
-	RequestErrors404 = "% 404 HTTP Response Sent"
-	RequestErrors403 = "% 403 HTTP Response Sent"
-	RequestErrors401 = "% 401 HTTP Response Sent"
+	w3SVCW3WPRequestErrors500 = "% 500 HTTP Response Sent"
+	w3SVCW3WPRequestErrors404 = "% 404 HTTP Response Sent"
+	w3SVCW3WPRequestErrors403 = "% 403 HTTP Response Sent"
+	w3SVCW3WPRequestErrors401 = "% 401 HTTP Response Sent"
 
-	WebSocketRequestsActive      = "WebSocket Active Requests"
-	WebSocketConnectionAttempts  = "WebSocket Connection Attempts / Sec"
-	WebSocketConnectionsAccepted = "WebSocket Connections Accepted / Sec"
-	WebSocketConnectionsRejected = "WebSocket Connections Rejected / Sec"
+	w3SVCW3WPWebSocketRequestsActive      = "WebSocket Active Requests"
+	w3SVCW3WPWebSocketConnectionAttempts  = "WebSocket Connection Attempts / Sec"
+	w3SVCW3WPWebSocketConnectionsAccepted = "WebSocket Connections Accepted / Sec"
+	w3SVCW3WPWebSocketConnectionsRejected = "WebSocket Connections Rejected / Sec"
 )
 
 func (c *Collector) buildW3SVCW3WP() error {
 	counters := []string{
-		Threads,
-		MaximumThreads,
-		RequestsTotal,
-		RequestsActive,
-		ActiveFlushedEntries,
-		CurrentFileCacheMemoryUsage,
-		MaximumFileCacheMemoryUsage,
-		FileCacheFlushesTotal,
-		FileCacheHitsTotal,
-		FileCacheMissesTotal,
-		FilesCached,
-		FilesCachedTotal,
-		FilesFlushedTotal,
-		URICacheFlushesTotal,
-		URICacheFlushesTotalKernel,
-		URIsFlushedTotalKernel,
-		URICacheHitsTotal,
-		URICacheHitsTotalKernel,
-		URICacheMissesTotal,
-		URICacheMissesTotalKernel,
-		URIsCached,
-		URIsCachedKernel,
-		URIsCachedTotal,
-		URIsCachedTotalKernel,
-		URIsFlushedTotal,
-		MetaDataCacheHits,
-		MetaDataCacheMisses,
-		MetadataCached,
-		MetadataCacheFlushes,
-		MetadataCachedTotal,
-		MetadataFlushedTotal,
-		OutputCacheActiveFlushedItems,
-		OutputCacheItems,
-		OutputCacheMemoryUsage,
-		OutputCacheHitsTotal,
-		OutputCacheMissesTotal,
-		OutputCacheFlushedItemsTotal,
-		OutputCacheFlushesTotal,
+		w3SVCW3WPThreads,
+		w3SVCW3WPMaximumThreads,
+		w3SVCW3WPRequestsTotal,
+		w3SVCW3WPRequestsActive,
+		w3SVCW3WPActiveFlushedEntries,
+		w3SVCW3WPCurrentFileCacheMemoryUsage,
+		w3SVCW3WPMaximumFileCacheMemoryUsage,
+		w3SVCW3WPFileCacheFlushesTotal,
+		w3SVCW3WPFileCacheHitsTotal,
+		w3SVCW3WPFileCacheMissesTotal,
+		w3SVCW3WPFilesCached,
+		w3SVCW3WPFilesCachedTotal,
+		w3SVCW3WPFilesFlushedTotal,
+		w3SVCW3WPURICacheFlushesTotal,
+		w3SVCW3WPURICacheHitsTotal,
+		w3SVCW3WPURICacheMissesTotal,
+		w3SVCW3WPURIsCached,
+		w3SVCW3WPURIsCachedTotal,
+		w3SVCW3WPURIsFlushedTotal,
+		w3SVCW3WPMetaDataCacheHits,
+		w3SVCW3WPMetaDataCacheMisses,
+		w3SVCW3WPMetadataCached,
+		w3SVCW3WPMetadataCacheFlushes,
+		w3SVCW3WPMetadataCachedTotal,
+		w3SVCW3WPMetadataFlushedTotal,
+		w3SVCW3WPOutputCacheActiveFlushedItems,
+		w3SVCW3WPOutputCacheItems,
+		w3SVCW3WPOutputCacheMemoryUsage,
+		w3SVCW3WPOutputCacheHitsTotal,
+		w3SVCW3WPOutputCacheMissesTotal,
+		w3SVCW3WPOutputCacheFlushedItemsTotal,
+		w3SVCW3WPOutputCacheFlushesTotal,
 	}
 
 	if c.iisVersion.major >= 8 {
 		counters = append(counters, []string{
-			RequestErrors500,
-			RequestErrors503,
-			RequestErrors404,
-			RequestErrors403,
-			RequestErrors401,
-			WebSocketRequestsActive,
-			WebSocketConnectionAttempts,
-			WebSocketConnectionsAccepted,
-			WebSocketConnectionsRejected,
+			w3SVCW3WPRequestErrors500,
+			w3SVCW3WPRequestErrors404,
+			w3SVCW3WPRequestErrors403,
+			w3SVCW3WPRequestErrors401,
+			w3SVCW3WPWebSocketRequestsActive,
+			w3SVCW3WPWebSocketConnectionAttempts,
+			w3SVCW3WPWebSocketConnectionsAccepted,
+			w3SVCW3WPWebSocketConnectionsRejected,
 		}...)
 	}
 
 	var err error
 
-	c.perfDataCollectorW3SVCW3WP, err = perfdata.NewCollector("W3SVC_W3WP", perfdata.InstanceAll, counters)
+	c.w3SVCW3WPPerfDataCollector, err = perfdata.NewCollector("W3SVC_W3WP", perfdata.InstancesAll, counters)
 	if err != nil {
 		return fmt.Errorf("failed to create W3SVC_W3WP collector: %w", err)
 	}
 
 	// W3SVC_W3WP
-	c.threads = prometheus.NewDesc(
+	c.w3SVCW3WPThreads = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_threads"),
 		"Number of threads actively processing requests in the worker process",
 		[]string{"app", "pid", "state"},
 		nil,
 	)
-	c.maximumThreads = prometheus.NewDesc(
+	c.w3SVCW3WPMaximumThreads = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_max_threads"),
 		"Maximum number of threads to which the thread pool can grow as needed",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.requestsTotal = prometheus.NewDesc(
+	c.w3SVCW3WPRequestsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_requests_total"),
 		"Total number of HTTP requests served by the worker process",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.requestsActive = prometheus.NewDesc(
+	c.w3SVCW3WPRequestsActive = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_current_requests"),
 		"Current number of requests being processed by the worker process",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.activeFlushedEntries = prometheus.NewDesc(
+	c.w3SVCW3WPActiveFlushedEntries = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_cache_active_flushed_entries"),
 		"Number of file handles cached in user-mode that will be closed when all current transfers complete.",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.currentFileCacheMemoryUsage = prometheus.NewDesc(
+	c.w3SVCW3WPCurrentFileCacheMemoryUsage = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_file_cache_memory_bytes"),
 		"Current number of bytes used by user-mode file cache",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.maximumFileCacheMemoryUsage = prometheus.NewDesc(
+	c.w3SVCW3WPMaximumFileCacheMemoryUsage = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_file_cache_max_memory_bytes"),
 		"Maximum number of bytes used by user-mode file cache",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.fileCacheFlushesTotal = prometheus.NewDesc(
+	c.w3SVCW3WPFileCacheFlushesTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_file_cache_flushes_total"),
 		"Total number of files removed from the user-mode cache",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.fileCacheQueriesTotal = prometheus.NewDesc(
+	c.w3SVCW3WPFileCacheQueriesTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_file_cache_queries_total"),
 		"Total file cache queries (hits + misses)",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.fileCacheHitsTotal = prometheus.NewDesc(
+	c.w3SVCW3WPFileCacheHitsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_file_cache_hits_total"),
 		"Total number of successful lookups in the user-mode file cache",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.filesCached = prometheus.NewDesc(
+	c.w3SVCW3WPFilesCached = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_file_cache_items"),
 		"Current number of files whose contents are present in user-mode cache",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.filesCachedTotal = prometheus.NewDesc(
+	c.w3SVCW3WPFilesCachedTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_file_cache_items_total"),
 		"Total number of files whose contents were ever added to the user-mode cache (since service startup)",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.filesFlushedTotal = prometheus.NewDesc(
+	c.w3SVCW3WPFilesFlushedTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_file_cache_items_flushed_total"),
 		"Total number of file handles that have been removed from the user-mode cache (since service startup)",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.uriCacheFlushesTotal = prometheus.NewDesc(
+	c.w3SVCW3WPURICacheFlushesTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_uri_cache_flushes_total"),
 		"Total number of URI cache flushes (since service startup)",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.uriCacheQueriesTotal = prometheus.NewDesc(
+	c.w3SVCW3WPURICacheQueriesTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_uri_cache_queries_total"),
 		"Total number of uri cache queries (hits + misses)",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.uriCacheHitsTotal = prometheus.NewDesc(
+	c.w3SVCW3WPURICacheHitsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_uri_cache_hits_total"),
 		"Total number of successful lookups in the user-mode URI cache (since service startup)",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.urisCached = prometheus.NewDesc(
+	c.w3SVCW3WPURIsCached = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_uri_cache_items"),
 		"Number of URI information blocks currently in the user-mode cache",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.urisCachedTotal = prometheus.NewDesc(
+	c.w3SVCW3WPURIsCachedTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_uri_cache_items_total"),
 		"Total number of URI information blocks added to the user-mode cache (since service startup)",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.urisFlushedTotal = prometheus.NewDesc(
+	c.w3SVCW3WPURIsFlushedTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_uri_cache_items_flushed_total"),
 		"The number of URI information blocks that have been removed from the user-mode cache (since service startup)",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.metadataCached = prometheus.NewDesc(
+	c.w3SVCW3WPMetadataCached = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_metadata_cache_items"),
 		"Number of metadata information blocks currently present in user-mode cache",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.metadataCacheFlushes = prometheus.NewDesc(
+	c.w3SVCW3WPMetadataCacheFlushes = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_metadata_cache_flushes_total"),
 		"Total number of user-mode metadata cache flushes (since service startup)",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.metadataCacheQueriesTotal = prometheus.NewDesc(
+	c.w3SVCW3WPMetadataCacheQueriesTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_metadata_cache_queries_total"),
 		"Total metadata cache queries (hits + misses)",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.metadataCacheHitsTotal = prometheus.NewDesc(
+	c.w3SVCW3WPMetadataCacheHitsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_metadata_cache_hits_total"),
 		"Total number of successful lookups in the user-mode metadata cache (since service startup)",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.metadataCachedTotal = prometheus.NewDesc(
+	c.w3SVCW3WPMetadataCachedTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_metadata_cache_items_cached_total"),
 		"Total number of metadata information blocks added to the user-mode cache (since service startup)",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.metadataFlushedTotal = prometheus.NewDesc(
+	c.w3SVCW3WPMetadataFlushedTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_metadata_cache_items_flushed_total"),
 		"Total number of metadata information blocks removed from the user-mode cache (since service startup)",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.outputCacheActiveFlushedItems = prometheus.NewDesc(
+	c.w3SVCW3WPOutputCacheActiveFlushedItems = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_output_cache_active_flushed_items"),
 		"",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.outputCacheItems = prometheus.NewDesc(
+	c.w3SVCW3WPOutputCacheItems = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_output_cache_items"),
 		"Number of items current present in output cache",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.outputCacheMemoryUsage = prometheus.NewDesc(
+	c.w3SVCW3WPOutputCacheMemoryUsage = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_output_cache_memory_bytes"),
 		"Current number of bytes used by output cache",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.outputCacheQueriesTotal = prometheus.NewDesc(
+	c.w3SVCW3WPOutputCacheQueriesTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_output_queries_total"),
 		"Total number of output cache queries (hits + misses)",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.outputCacheHitsTotal = prometheus.NewDesc(
+	c.w3SVCW3WPOutputCacheHitsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_output_cache_hits_total"),
 		"Total number of successful lookups in output cache (since service startup)",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.outputCacheFlushedItemsTotal = prometheus.NewDesc(
+	c.w3SVCW3WPOutputCacheFlushedItemsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_output_cache_items_flushed_total"),
 		"Total number of items flushed from output cache (since service startup)",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.outputCacheFlushesTotal = prometheus.NewDesc(
+	c.w3SVCW3WPOutputCacheFlushesTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_output_cache_flushes_total"),
 		"Total number of flushes of output cache (since service startup)",
 		[]string{"app", "pid"},
 		nil,
 	)
 	// W3SVC_W3WP_IIS8
-	c.requestErrorsTotal = prometheus.NewDesc(
+	c.w3SVCW3WPRequestErrorsTotal = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_request_errors_total"),
 		"Total number of requests that returned an error",
 		[]string{"app", "pid", "status_code"},
 		nil,
 	)
-	c.webSocketRequestsActive = prometheus.NewDesc(
+	c.w3SVCW3WPWebSocketRequestsActive = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_current_websocket_requests"),
 		"",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.webSocketConnectionAttempts = prometheus.NewDesc(
+	c.w3SVCW3WPWebSocketConnectionAttempts = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_websocket_connection_attempts_total"),
 		"",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.webSocketConnectionsAccepted = prometheus.NewDesc(
+	c.w3SVCW3WPWebSocketConnectionsAccepted = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_websocket_connection_accepted_total"),
 		"",
 		[]string{"app", "pid"},
 		nil,
 	)
-	c.webSocketConnectionsRejected = prometheus.NewDesc(
+	c.w3SVCW3WPWebSocketConnectionsRejected = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "worker_websocket_connection_rejected_total"),
 		"",
 		[]string{"app", "pid"},
@@ -416,7 +415,7 @@ func (c *Collector) buildW3SVCW3WP() error {
 }
 
 func (c *Collector) collectW3SVCW3WP(ch chan<- prometheus.Metric) error {
-	perfData, err := c.perfDataCollectorW3SVCW3WP.Collect()
+	perfData, err := c.w3SVCW3WPPerfDataCollector.Collect()
 	if err != nil {
 		return fmt.Errorf("failed to collect APP_POOL_WAS metrics: %w", err)
 	}
@@ -432,8 +431,7 @@ func (c *Collector) collectW3SVCW3WP(ch chan<- prometheus.Metric) error {
 		pid := workerProcessNameExtractor.ReplaceAllString(name, "$1")
 
 		name := workerProcessNameExtractor.ReplaceAllString(name, "$2")
-		if name == "" || name == "_Total" ||
-			c.config.AppExclude.MatchString(name) ||
+		if name == "" || c.config.AppExclude.MatchString(name) ||
 			!c.config.AppInclude.MatchString(name) {
 			continue
 		}
@@ -444,297 +442,289 @@ func (c *Collector) collectW3SVCW3WP(ch chan<- prometheus.Metric) error {
 		}
 
 		ch <- prometheus.MustNewConstMetric(
-			c.threads,
+			c.w3SVCW3WPThreads,
 			prometheus.GaugeValue,
-			app[Threads].FirstValue,
+			app[w3SVCW3WPThreads].FirstValue,
 			name,
 			pid,
 			"busy",
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.maximumThreads,
+			c.w3SVCW3WPMaximumThreads,
 			prometheus.CounterValue,
-			app[MaximumThreads].FirstValue,
+			app[w3SVCW3WPMaximumThreads].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.requestsTotal,
+			c.w3SVCW3WPRequestsTotal,
 			prometheus.CounterValue,
-			app[RequestsTotal].FirstValue,
+			app[w3SVCW3WPRequestsTotal].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.requestsActive,
+			c.w3SVCW3WPRequestsActive,
 			prometheus.CounterValue,
-			app[RequestsActive].FirstValue,
+			app[w3SVCW3WPRequestsActive].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.activeFlushedEntries,
+			c.w3SVCW3WPActiveFlushedEntries,
 			prometheus.GaugeValue,
-			app[ActiveFlushedEntries].FirstValue,
+			app[w3SVCW3WPActiveFlushedEntries].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.currentFileCacheMemoryUsage,
+			c.w3SVCW3WPCurrentFileCacheMemoryUsage,
 			prometheus.GaugeValue,
-			app[CurrentFileCacheMemoryUsage].FirstValue,
+			app[w3SVCW3WPCurrentFileCacheMemoryUsage].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.maximumFileCacheMemoryUsage,
+			c.w3SVCW3WPMaximumFileCacheMemoryUsage,
 			prometheus.CounterValue,
-			app[MaximumFileCacheMemoryUsage].FirstValue,
+			app[w3SVCW3WPMaximumFileCacheMemoryUsage].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.fileCacheFlushesTotal,
+			c.w3SVCW3WPFileCacheFlushesTotal,
 			prometheus.CounterValue,
-			app[FileCacheFlushesTotal].FirstValue,
+			app[w3SVCW3WPFileCacheFlushesTotal].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.fileCacheQueriesTotal,
+			c.w3SVCW3WPFileCacheQueriesTotal,
 			prometheus.CounterValue,
-			app[FileCacheHitsTotal].FirstValue+app[FileCacheMissesTotal].FirstValue,
+			app[w3SVCW3WPFileCacheHitsTotal].FirstValue+app[w3SVCW3WPFileCacheMissesTotal].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.fileCacheHitsTotal,
+			c.w3SVCW3WPFileCacheHitsTotal,
 			prometheus.CounterValue,
-			app[FileCacheHitsTotal].FirstValue,
+			app[w3SVCW3WPFileCacheHitsTotal].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.filesCached,
+			c.w3SVCW3WPFilesCached,
 			prometheus.GaugeValue,
-			app[FilesCached].FirstValue,
+			app[w3SVCW3WPFilesCached].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.filesCachedTotal,
+			c.w3SVCW3WPFilesCachedTotal,
 			prometheus.CounterValue,
-			app[FilesCachedTotal].FirstValue,
+			app[w3SVCW3WPFilesCachedTotal].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.filesFlushedTotal,
+			c.w3SVCW3WPFilesFlushedTotal,
 			prometheus.CounterValue,
-			app[FilesFlushedTotal].FirstValue,
+			app[w3SVCW3WPFilesFlushedTotal].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.uriCacheFlushesTotal,
+			c.w3SVCW3WPURICacheFlushesTotal,
 			prometheus.CounterValue,
-			app[URICacheFlushesTotal].FirstValue,
+			app[w3SVCW3WPURICacheFlushesTotal].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.uriCacheQueriesTotal,
+			c.w3SVCW3WPURICacheQueriesTotal,
 			prometheus.CounterValue,
-			app[URICacheHitsTotal].FirstValue+app[URICacheMissesTotal].FirstValue,
+			app[w3SVCW3WPURICacheHitsTotal].FirstValue+app[w3SVCW3WPURICacheMissesTotal].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.uriCacheHitsTotal,
+			c.w3SVCW3WPURICacheHitsTotal,
 			prometheus.CounterValue,
-			app[URICacheHitsTotal].FirstValue,
+			app[w3SVCW3WPURICacheHitsTotal].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.urisCached,
+			c.w3SVCW3WPURIsCached,
 			prometheus.GaugeValue,
-			app[URIsCached].FirstValue,
+			app[w3SVCW3WPURIsCached].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.urisCachedTotal,
+			c.w3SVCW3WPURIsCachedTotal,
 			prometheus.CounterValue,
-			app[URIsCachedTotal].FirstValue,
+			app[w3SVCW3WPURIsCachedTotal].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.urisFlushedTotal,
+			c.w3SVCW3WPURIsFlushedTotal,
 			prometheus.CounterValue,
-			app[URIsFlushedTotal].FirstValue,
+			app[w3SVCW3WPURIsFlushedTotal].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.metadataCached,
+			c.w3SVCW3WPMetadataCached,
 			prometheus.GaugeValue,
-			app[MetadataCached].FirstValue,
+			app[w3SVCW3WPMetadataCached].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.metadataCacheFlushes,
+			c.w3SVCW3WPMetadataCacheFlushes,
 			prometheus.CounterValue,
-			app[MetadataCacheFlushes].FirstValue,
+			app[w3SVCW3WPMetadataCacheFlushes].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.metadataCacheQueriesTotal,
+			c.w3SVCW3WPMetadataCacheQueriesTotal,
 			prometheus.CounterValue,
-			app[MetaDataCacheHits].FirstValue+app[MetaDataCacheMisses].FirstValue,
+			app[w3SVCW3WPMetaDataCacheHits].FirstValue+app[w3SVCW3WPMetaDataCacheMisses].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.metadataCacheHitsTotal,
+			c.w3SVCW3WPMetadataCacheHitsTotal,
 			prometheus.CounterValue,
-			app[MetaDataCacheHits].FirstValue,
+			app[w3SVCW3WPMetaDataCacheHits].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.metadataCachedTotal,
+			c.w3SVCW3WPMetadataCachedTotal,
 			prometheus.CounterValue,
-			app[MetadataCachedTotal].FirstValue,
+			app[w3SVCW3WPMetadataCachedTotal].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.metadataFlushedTotal,
+			c.w3SVCW3WPMetadataFlushedTotal,
 			prometheus.CounterValue,
-			app[MetadataFlushedTotal].FirstValue,
+			app[w3SVCW3WPMetadataFlushedTotal].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.outputCacheActiveFlushedItems,
+			c.w3SVCW3WPOutputCacheActiveFlushedItems,
 			prometheus.CounterValue,
-			app[OutputCacheActiveFlushedItems].FirstValue,
+			app[w3SVCW3WPOutputCacheActiveFlushedItems].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.outputCacheItems,
+			c.w3SVCW3WPOutputCacheItems,
 			prometheus.CounterValue,
-			app[OutputCacheItems].FirstValue,
+			app[w3SVCW3WPOutputCacheItems].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.outputCacheMemoryUsage,
+			c.w3SVCW3WPOutputCacheMemoryUsage,
 			prometheus.CounterValue,
-			app[OutputCacheMemoryUsage].FirstValue,
+			app[w3SVCW3WPOutputCacheMemoryUsage].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.outputCacheQueriesTotal,
+			c.w3SVCW3WPOutputCacheQueriesTotal,
 			prometheus.CounterValue,
-			app[OutputCacheHitsTotal].FirstValue+app[OutputCacheMissesTotal].FirstValue,
+			app[w3SVCW3WPOutputCacheHitsTotal].FirstValue+app[w3SVCW3WPOutputCacheMissesTotal].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.outputCacheHitsTotal,
+			c.w3SVCW3WPOutputCacheHitsTotal,
 			prometheus.CounterValue,
-			app[OutputCacheHitsTotal].FirstValue,
+			app[w3SVCW3WPOutputCacheHitsTotal].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.outputCacheFlushedItemsTotal,
+			c.w3SVCW3WPOutputCacheFlushedItemsTotal,
 			prometheus.CounterValue,
-			app[OutputCacheFlushedItemsTotal].FirstValue,
+			app[w3SVCW3WPOutputCacheFlushedItemsTotal].FirstValue,
 			name,
 			pid,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.outputCacheFlushesTotal,
+			c.w3SVCW3WPOutputCacheFlushesTotal,
 			prometheus.CounterValue,
-			app[OutputCacheFlushesTotal].FirstValue,
+			app[w3SVCW3WPOutputCacheFlushesTotal].FirstValue,
 			name,
 			pid,
 		)
 
 		if c.iisVersion.major >= 8 {
 			ch <- prometheus.MustNewConstMetric(
-				c.requestErrorsTotal,
+				c.w3SVCW3WPRequestErrorsTotal,
 				prometheus.CounterValue,
-				app[RequestErrors401].FirstValue,
+				app[w3SVCW3WPRequestErrors401].FirstValue,
 				name,
 				pid,
 				"401",
 			)
 			ch <- prometheus.MustNewConstMetric(
-				c.requestErrorsTotal,
+				c.w3SVCW3WPRequestErrorsTotal,
 				prometheus.CounterValue,
-				app[RequestErrors403].FirstValue,
+				app[w3SVCW3WPRequestErrors403].FirstValue,
 				name,
 				pid,
 				"403",
 			)
 			ch <- prometheus.MustNewConstMetric(
-				c.requestErrorsTotal,
+				c.w3SVCW3WPRequestErrorsTotal,
 				prometheus.CounterValue,
-				app[RequestErrors404].FirstValue,
+				app[w3SVCW3WPRequestErrors404].FirstValue,
 				name,
 				pid,
 				"404",
 			)
 			ch <- prometheus.MustNewConstMetric(
-				c.requestErrorsTotal,
+				c.w3SVCW3WPRequestErrorsTotal,
 				prometheus.CounterValue,
-				app[RequestErrors500].FirstValue,
+				app[w3SVCW3WPRequestErrors500].FirstValue,
 				name,
 				pid,
 				"500",
 			)
 			ch <- prometheus.MustNewConstMetric(
-				c.requestErrorsTotal,
+				c.w3SVCW3WPWebSocketRequestsActive,
 				prometheus.CounterValue,
-				app[RequestErrors503].FirstValue,
-				name,
-				pid,
-				"503",
-			)
-			ch <- prometheus.MustNewConstMetric(
-				c.webSocketRequestsActive,
-				prometheus.CounterValue,
-				app[WebSocketRequestsActive].FirstValue,
+				app[w3SVCW3WPWebSocketRequestsActive].FirstValue,
 				name,
 				pid,
 			)
 			ch <- prometheus.MustNewConstMetric(
-				c.webSocketConnectionAttempts,
+				c.w3SVCW3WPWebSocketConnectionAttempts,
 				prometheus.CounterValue,
-				app[WebSocketConnectionAttempts].FirstValue,
+				app[w3SVCW3WPWebSocketConnectionAttempts].FirstValue,
 				name,
 				pid,
 			)
 			ch <- prometheus.MustNewConstMetric(
-				c.webSocketConnectionsAccepted,
+				c.w3SVCW3WPWebSocketConnectionsAccepted,
 				prometheus.CounterValue,
-				app[WebSocketConnectionsAccepted].FirstValue,
+				app[w3SVCW3WPWebSocketConnectionsAccepted].FirstValue,
 				name,
 				pid,
 			)
 			ch <- prometheus.MustNewConstMetric(
-				c.webSocketConnectionsRejected,
+				c.w3SVCW3WPWebSocketConnectionsRejected,
 				prometheus.CounterValue,
-				app[WebSocketConnectionsRejected].FirstValue,
+				app[w3SVCW3WPWebSocketConnectionsRejected].FirstValue,
 				name,
 				pid,
 			)

internal/collector/iis/iis_web_service.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package iis
@@ -13,243 +26,243 @@ import (
 type collectorWebService struct {
 	perfDataCollectorWebService *perfdata.Collector
 
-	currentAnonymousUsers               *prometheus.Desc
-	currentBlockedAsyncIORequests       *prometheus.Desc
-	currentCGIRequests                  *prometheus.Desc
-	currentConnections                  *prometheus.Desc
-	currentISAPIExtensionRequests       *prometheus.Desc
-	currentNonAnonymousUsers            *prometheus.Desc
-	serviceUptime                       *prometheus.Desc
-	totalBytesReceived                  *prometheus.Desc
-	totalBytesSent                      *prometheus.Desc
-	totalAnonymousUsers                 *prometheus.Desc
-	totalBlockedAsyncIORequests         *prometheus.Desc
-	totalCGIRequests                    *prometheus.Desc
-	totalConnectionAttemptsAllInstances *prometheus.Desc
-	totalRequests                       *prometheus.Desc
-	totalFilesReceived                  *prometheus.Desc
-	totalFilesSent                      *prometheus.Desc
-	totalISAPIExtensionRequests         *prometheus.Desc
-	totalLockedErrors                   *prometheus.Desc
-	totalLogonAttempts                  *prometheus.Desc
-	totalNonAnonymousUsers              *prometheus.Desc
-	totalNotFoundErrors                 *prometheus.Desc
-	totalRejectedAsyncIORequests        *prometheus.Desc
+	webServiceCurrentAnonymousUsers               *prometheus.Desc
+	webServiceCurrentBlockedAsyncIORequests       *prometheus.Desc
+	webServiceCurrentCGIRequests                  *prometheus.Desc
+	webServiceCurrentConnections                  *prometheus.Desc
+	webServiceCurrentISAPIExtensionRequests       *prometheus.Desc
+	webServiceCurrentNonAnonymousUsers            *prometheus.Desc
+	webServiceServiceUptime                       *prometheus.Desc
+	webServiceTotalBytesReceived                  *prometheus.Desc
+	webServiceTotalBytesSent                      *prometheus.Desc
+	webServiceTotalAnonymousUsers                 *prometheus.Desc
+	webServiceTotalBlockedAsyncIORequests         *prometheus.Desc
+	webServiceTotalCGIRequests                    *prometheus.Desc
+	webServiceTotalConnectionAttemptsAllInstances *prometheus.Desc
+	webServiceTotalRequests                       *prometheus.Desc
+	webServiceTotalFilesReceived                  *prometheus.Desc
+	webServiceTotalFilesSent                      *prometheus.Desc
+	webServiceTotalISAPIExtensionRequests         *prometheus.Desc
+	webServiceTotalLockedErrors                   *prometheus.Desc
+	webServiceTotalLogonAttempts                  *prometheus.Desc
+	webServiceTotalNonAnonymousUsers              *prometheus.Desc
+	webServiceTotalNotFoundErrors                 *prometheus.Desc
+	webServiceTotalRejectedAsyncIORequests        *prometheus.Desc
 }
 
 const (
-	CurrentAnonymousUsers               = "Current Anonymous Users"
-	CurrentBlockedAsyncIORequests       = "Current Blocked Async I/O Requests"
-	CurrentCGIRequests                  = "Current CGI Requests"
-	CurrentConnections                  = "Current Connections"
-	CurrentISAPIExtensionRequests       = "Current ISAPI Extension Requests"
-	CurrentNonAnonymousUsers            = "Current NonAnonymous Users"
-	ServiceUptime                       = "Service Uptime"
-	TotalBytesReceived                  = "Total Bytes Received"
-	TotalBytesSent                      = "Total Bytes Sent"
-	TotalAnonymousUsers                 = "Total Anonymous Users"
-	TotalBlockedAsyncIORequests         = "Total Blocked Async I/O Requests"
-	TotalCGIRequests                    = "Total CGI Requests"
-	TotalConnectionAttemptsAllInstances = "Total Connection Attempts (all instances)"
-	TotalFilesReceived                  = "Total Files Received"
-	TotalFilesSent                      = "Total Files Sent"
-	TotalISAPIExtensionRequests         = "Total ISAPI Extension Requests"
-	TotalLockedErrors                   = "Total Locked Errors"
-	TotalLogonAttempts                  = "Total Logon Attempts"
-	TotalNonAnonymousUsers              = "Total NonAnonymous Users"
-	TotalNotFoundErrors                 = "Total Not Found Errors"
-	TotalRejectedAsyncIORequests        = "Total Rejected Async I/O Requests"
-	TotalCopyRequests                   = "Total Copy Requests"
-	TotalDeleteRequests                 = "Total Delete Requests"
-	TotalGetRequests                    = "Total Get Requests"
-	TotalHeadRequests                   = "Total Head Requests"
-	TotalLockRequests                   = "Total Lock Requests"
-	TotalMkcolRequests                  = "Total Mkcol Requests"
-	TotalMoveRequests                   = "Total Move Requests"
-	TotalOptionsRequests                = "Total Options Requests"
-	TotalOtherRequests                  = "Total Other Request Methods"
-	TotalPostRequests                   = "Total Post Requests"
-	TotalPropfindRequests               = "Total Propfind Requests"
-	TotalProppatchRequests              = "Total Proppatch Requests"
-	TotalPutRequests                    = "Total Put Requests"
-	TotalSearchRequests                 = "Total Search Requests"
-	TotalTraceRequests                  = "Total Trace Requests"
-	TotalUnlockRequests                 = "Total Unlock Requests"
+	webServiceCurrentAnonymousUsers               = "Current Anonymous Users"
+	webServiceCurrentBlockedAsyncIORequests       = "Current Blocked Async I/O Requests"
+	webServiceCurrentCGIRequests                  = "Current CGI Requests"
+	webServiceCurrentConnections                  = "Current Connections"
+	webServiceCurrentISAPIExtensionRequests       = "Current ISAPI Extension Requests"
+	webServiceCurrentNonAnonymousUsers            = "Current NonAnonymous Users"
+	webServiceServiceUptime                       = "Service Uptime"
+	webServiceTotalBytesReceived                  = "Total Bytes Received"
+	webServiceTotalBytesSent                      = "Total Bytes Sent"
+	webServiceTotalAnonymousUsers                 = "Total Anonymous Users"
+	webServiceTotalBlockedAsyncIORequests         = "Total Blocked Async I/O Requests"
+	webServiceTotalCGIRequests                    = "Total CGI Requests"
+	webServiceTotalConnectionAttemptsAllInstances = "Total Connection Attempts (all instances)"
+	webServiceTotalFilesReceived                  = "Total Files Received"
+	webServiceTotalFilesSent                      = "Total Files Sent"
+	webServiceTotalISAPIExtensionRequests         = "Total ISAPI Extension Requests"
+	webServiceTotalLockedErrors                   = "Total Locked Errors"
+	webServiceTotalLogonAttempts                  = "Total Logon Attempts"
+	webServiceTotalNonAnonymousUsers              = "Total NonAnonymous Users"
+	webServiceTotalNotFoundErrors                 = "Total Not Found Errors"
+	webServiceTotalRejectedAsyncIORequests        = "Total Rejected Async I/O Requests"
+	webServiceTotalCopyRequests                   = "Total Copy Requests"
+	webServiceTotalDeleteRequests                 = "Total Delete Requests"
+	webServiceTotalGetRequests                    = "Total Get Requests"
+	webServiceTotalHeadRequests                   = "Total Head Requests"
+	webServiceTotalLockRequests                   = "Total Lock Requests"
+	webServiceTotalMkcolRequests                  = "Total Mkcol Requests"
+	webServiceTotalMoveRequests                   = "Total Move Requests"
+	webServiceTotalOptionsRequests                = "Total Options Requests"
+	webServiceTotalOtherRequests                  = "Total Other Request Methods"
+	webServiceTotalPostRequests                   = "Total Post Requests"
+	webServiceTotalPropfindRequests               = "Total Propfind Requests"
+	webServiceTotalProppatchRequests              = "Total Proppatch Requests"
+	webServiceTotalPutRequests                    = "Total Put Requests"
+	webServiceTotalSearchRequests                 = "Total Search Requests"
+	webServiceTotalTraceRequests                  = "Total Trace Requests"
+	webServiceTotalUnlockRequests                 = "Total Unlock Requests"
 )
 
 func (c *Collector) buildWebService() error {
 	var err error
 
-	c.perfDataCollectorWebService, err = perfdata.NewCollector("Web Service", perfdata.InstanceAll, []string{
-		CurrentAnonymousUsers,
-		CurrentBlockedAsyncIORequests,
-		CurrentCGIRequests,
-		CurrentConnections,
-		CurrentISAPIExtensionRequests,
-		CurrentNonAnonymousUsers,
-		ServiceUptime,
-		TotalBytesReceived,
-		TotalBytesSent,
-		TotalAnonymousUsers,
-		TotalBlockedAsyncIORequests,
-		TotalCGIRequests,
-		TotalConnectionAttemptsAllInstances,
-		TotalFilesReceived,
-		TotalFilesSent,
-		TotalISAPIExtensionRequests,
-		TotalLockedErrors,
-		TotalLogonAttempts,
-		TotalNonAnonymousUsers,
-		TotalNotFoundErrors,
-		TotalRejectedAsyncIORequests,
-		TotalCopyRequests,
-		TotalDeleteRequests,
-		TotalGetRequests,
-		TotalHeadRequests,
-		TotalLockRequests,
-		TotalMkcolRequests,
-		TotalMoveRequests,
-		TotalOptionsRequests,
-		TotalOtherRequests,
-		TotalPostRequests,
-		TotalPropfindRequests,
-		TotalProppatchRequests,
-		TotalPutRequests,
-		TotalSearchRequests,
-		TotalTraceRequests,
-		TotalUnlockRequests,
+	c.perfDataCollectorWebService, err = perfdata.NewCollector("Web Service", perfdata.InstancesAll, []string{
+		webServiceCurrentAnonymousUsers,
+		webServiceCurrentBlockedAsyncIORequests,
+		webServiceCurrentCGIRequests,
+		webServiceCurrentConnections,
+		webServiceCurrentISAPIExtensionRequests,
+		webServiceCurrentNonAnonymousUsers,
+		webServiceServiceUptime,
+		webServiceTotalBytesReceived,
+		webServiceTotalBytesSent,
+		webServiceTotalAnonymousUsers,
+		webServiceTotalBlockedAsyncIORequests,
+		webServiceTotalCGIRequests,
+		webServiceTotalConnectionAttemptsAllInstances,
+		webServiceTotalFilesReceived,
+		webServiceTotalFilesSent,
+		webServiceTotalISAPIExtensionRequests,
+		webServiceTotalLockedErrors,
+		webServiceTotalLogonAttempts,
+		webServiceTotalNonAnonymousUsers,
+		webServiceTotalNotFoundErrors,
+		webServiceTotalRejectedAsyncIORequests,
+		webServiceTotalCopyRequests,
+		webServiceTotalDeleteRequests,
+		webServiceTotalGetRequests,
+		webServiceTotalHeadRequests,
+		webServiceTotalLockRequests,
+		webServiceTotalMkcolRequests,
+		webServiceTotalMoveRequests,
+		webServiceTotalOptionsRequests,
+		webServiceTotalOtherRequests,
+		webServiceTotalPostRequests,
+		webServiceTotalPropfindRequests,
+		webServiceTotalProppatchRequests,
+		webServiceTotalPutRequests,
+		webServiceTotalSearchRequests,
+		webServiceTotalTraceRequests,
+		webServiceTotalUnlockRequests,
 	})
 	if err != nil {
 		return fmt.Errorf("failed to create Web Service collector: %w", err)
 	}
 
-	c.currentAnonymousUsers = prometheus.NewDesc(
+	c.webServiceCurrentAnonymousUsers = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "current_anonymous_users"),
 		"Number of users who currently have an anonymous connection using the Web service (WebService.CurrentAnonymousUsers)",
 		[]string{"site"},
 		nil,
 	)
-	c.currentBlockedAsyncIORequests = prometheus.NewDesc(
+	c.webServiceCurrentBlockedAsyncIORequests = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "current_blocked_async_io_requests"),
 		"Current requests temporarily blocked due to bandwidth throttling settings (WebService.CurrentBlockedAsyncIORequests)",
 		[]string{"site"},
 		nil,
 	)
-	c.currentCGIRequests = prometheus.NewDesc(
+	c.webServiceCurrentCGIRequests = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "current_cgi_requests"),
 		"Current number of CGI requests being simultaneously processed by the Web service (WebService.CurrentCGIRequests)",
 		[]string{"site"},
 		nil,
 	)
-	c.currentConnections = prometheus.NewDesc(
+	c.webServiceCurrentConnections = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "current_connections"),
 		"Current number of connections established with the Web service (WebService.CurrentConnections)",
 		[]string{"site"},
 		nil,
 	)
-	c.currentISAPIExtensionRequests = prometheus.NewDesc(
+	c.webServiceCurrentISAPIExtensionRequests = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "current_isapi_extension_requests"),
 		"Current number of ISAPI requests being simultaneously processed by the Web service (WebService.CurrentISAPIExtensionRequests)",
 		[]string{"site"},
 		nil,
 	)
-	c.currentNonAnonymousUsers = prometheus.NewDesc(
+	c.webServiceCurrentNonAnonymousUsers = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "current_non_anonymous_users"),
 		"Number of users who currently have a non-anonymous connection using the Web service (WebService.CurrentNonAnonymousUsers)",
 		[]string{"site"},
 		nil,
 	)
-	c.serviceUptime = prometheus.NewDesc(
+	c.webServiceServiceUptime = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "service_uptime"),
 		"Number of seconds the WebService is up (WebService.ServiceUptime)",
 		[]string{"site"},
 		nil,
 	)
-	c.totalBytesReceived = prometheus.NewDesc(
+	c.webServiceTotalBytesReceived = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "received_bytes_total"),
 		"Number of data bytes that have been received by the Web service (WebService.TotalBytesReceived)",
 		[]string{"site"},
 		nil,
 	)
-	c.totalBytesSent = prometheus.NewDesc(
+	c.webServiceTotalBytesSent = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "sent_bytes_total"),
 		"Number of data bytes that have been sent by the Web service (WebService.TotalBytesSent)",
 		[]string{"site"},
 		nil,
 	)
-	c.totalAnonymousUsers = prometheus.NewDesc(
+	c.webServiceTotalAnonymousUsers = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "anonymous_users_total"),
 		"Total number of users who established an anonymous connection with the Web service (WebService.TotalAnonymousUsers)",
 		[]string{"site"},
 		nil,
 	)
-	c.totalBlockedAsyncIORequests = prometheus.NewDesc(
+	c.webServiceTotalBlockedAsyncIORequests = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "blocked_async_io_requests_total"),
 		"Total requests temporarily blocked due to bandwidth throttling settings (WebService.TotalBlockedAsyncIORequests)",
 		[]string{"site"},
 		nil,
 	)
-	c.totalCGIRequests = prometheus.NewDesc(
+	c.webServiceTotalCGIRequests = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "cgi_requests_total"),
 		"Total CGI requests is the total number of CGI requests (WebService.TotalCGIRequests)",
 		[]string{"site"},
 		nil,
 	)
-	c.totalConnectionAttemptsAllInstances = prometheus.NewDesc(
+	c.webServiceTotalConnectionAttemptsAllInstances = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "connection_attempts_all_instances_total"),
 		"Number of connections that have been attempted using the Web service (WebService.TotalConnectionAttemptsAllInstances)",
 		[]string{"site"},
 		nil,
 	)
-	c.totalRequests = prometheus.NewDesc(
+	c.webServiceTotalRequests = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "requests_total"),
 		"Number of HTTP requests (WebService.TotalRequests)",
 		[]string{"site", "method"},
 		nil,
 	)
-	c.totalFilesReceived = prometheus.NewDesc(
+	c.webServiceTotalFilesReceived = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "files_received_total"),
 		"Number of files received by the Web service (WebService.TotalFilesReceived)",
 		[]string{"site"},
 		nil,
 	)
-	c.totalFilesSent = prometheus.NewDesc(
+	c.webServiceTotalFilesSent = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "files_sent_total"),
 		"Number of files sent by the Web service (WebService.TotalFilesSent)",
 		[]string{"site"},
 		nil,
 	)
-	c.totalISAPIExtensionRequests = prometheus.NewDesc(
+	c.webServiceTotalISAPIExtensionRequests = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "ipapi_extension_requests_total"),
 		"ISAPI Extension Requests received (WebService.TotalISAPIExtensionRequests)",
 		[]string{"site"},
 		nil,
 	)
-	c.totalLockedErrors = prometheus.NewDesc(
+	c.webServiceTotalLockedErrors = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "locked_errors_total"),
 		"Number of requests that couldn't be satisfied by the server because the requested resource was locked (WebService.TotalLockedErrors)",
 		[]string{"site"},
 		nil,
 	)
-	c.totalLogonAttempts = prometheus.NewDesc(
+	c.webServiceTotalLogonAttempts = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "logon_attempts_total"),
 		"Number of logons attempts to the Web Service (WebService.TotalLogonAttempts)",
 		[]string{"site"},
 		nil,
 	)
-	c.totalNonAnonymousUsers = prometheus.NewDesc(
+	c.webServiceTotalNonAnonymousUsers = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "non_anonymous_users_total"),
 		"Number of users who established a non-anonymous connection with the Web service (WebService.TotalNonAnonymousUsers)",
 		[]string{"site"},
 		nil,
 	)
-	c.totalNotFoundErrors = prometheus.NewDesc(
+	c.webServiceTotalNotFoundErrors = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "not_found_errors_total"),
 		"Number of requests that couldn't be satisfied by the server because the requested document could not be found (WebService.TotalNotFoundErrors)",
 		[]string{"site"},
 		nil,
 	)
-	c.totalRejectedAsyncIORequests = prometheus.NewDesc(
+	c.webServiceTotalRejectedAsyncIORequests = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, Name, "rejected_async_io_requests_total"),
 		"Requests rejected due to bandwidth throttling settings (WebService.TotalRejectedAsyncIORequests)",
 		[]string{"site"},
@@ -273,240 +286,240 @@ func (c *Collector) collectWebService(ch chan<- prometheus.Metric) error {
 		}
 
 		ch <- prometheus.MustNewConstMetric(
-			c.currentAnonymousUsers,
+			c.webServiceCurrentAnonymousUsers,
 			prometheus.GaugeValue,
-			app[CurrentAnonymousUsers].FirstValue,
+			app[webServiceCurrentAnonymousUsers].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.currentBlockedAsyncIORequests,
+			c.webServiceCurrentBlockedAsyncIORequests,
 			prometheus.GaugeValue,
-			app[CurrentBlockedAsyncIORequests].FirstValue,
+			app[webServiceCurrentBlockedAsyncIORequests].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.currentCGIRequests,
+			c.webServiceCurrentCGIRequests,
 			prometheus.GaugeValue,
-			app[CurrentCGIRequests].FirstValue,
+			app[webServiceCurrentCGIRequests].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.currentConnections,
+			c.webServiceCurrentConnections,
 			prometheus.GaugeValue,
-			app[CurrentConnections].FirstValue,
+			app[webServiceCurrentConnections].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.currentISAPIExtensionRequests,
+			c.webServiceCurrentISAPIExtensionRequests,
 			prometheus.GaugeValue,
-			app[CurrentISAPIExtensionRequests].FirstValue,
+			app[webServiceCurrentISAPIExtensionRequests].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.currentNonAnonymousUsers,
+			c.webServiceCurrentNonAnonymousUsers,
 			prometheus.GaugeValue,
-			app[CurrentNonAnonymousUsers].FirstValue,
+			app[webServiceCurrentNonAnonymousUsers].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.serviceUptime,
+			c.webServiceServiceUptime,
 			prometheus.GaugeValue,
-			app[ServiceUptime].FirstValue,
+			app[webServiceServiceUptime].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalBytesReceived,
+			c.webServiceTotalBytesReceived,
 			prometheus.CounterValue,
-			app[TotalBytesReceived].FirstValue,
+			app[webServiceTotalBytesReceived].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalBytesSent,
+			c.webServiceTotalBytesSent,
 			prometheus.CounterValue,
-			app[TotalBytesSent].FirstValue,
+			app[webServiceTotalBytesSent].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalAnonymousUsers,
+			c.webServiceTotalAnonymousUsers,
 			prometheus.CounterValue,
-			app[TotalAnonymousUsers].FirstValue,
+			app[webServiceTotalAnonymousUsers].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalBlockedAsyncIORequests,
+			c.webServiceTotalBlockedAsyncIORequests,
 			prometheus.CounterValue,
-			app[TotalBlockedAsyncIORequests].FirstValue,
+			app[webServiceTotalBlockedAsyncIORequests].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalCGIRequests,
+			c.webServiceTotalCGIRequests,
 			prometheus.CounterValue,
-			app[TotalCGIRequests].FirstValue,
+			app[webServiceTotalCGIRequests].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalConnectionAttemptsAllInstances,
+			c.webServiceTotalConnectionAttemptsAllInstances,
 			prometheus.CounterValue,
-			app[TotalConnectionAttemptsAllInstances].FirstValue,
+			app[webServiceTotalConnectionAttemptsAllInstances].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalFilesReceived,
+			c.webServiceTotalFilesReceived,
 			prometheus.CounterValue,
-			app[TotalFilesReceived].FirstValue,
+			app[webServiceTotalFilesReceived].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalFilesSent,
+			c.webServiceTotalFilesSent,
 			prometheus.CounterValue,
-			app[TotalFilesSent].FirstValue,
+			app[webServiceTotalFilesSent].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalISAPIExtensionRequests,
+			c.webServiceTotalISAPIExtensionRequests,
 			prometheus.CounterValue,
-			app[TotalISAPIExtensionRequests].FirstValue,
+			app[webServiceTotalISAPIExtensionRequests].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalLockedErrors,
+			c.webServiceTotalLockedErrors,
 			prometheus.CounterValue,
-			app[TotalLockedErrors].FirstValue,
+			app[webServiceTotalLockedErrors].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalLogonAttempts,
+			c.webServiceTotalLogonAttempts,
 			prometheus.CounterValue,
-			app[TotalLogonAttempts].FirstValue,
+			app[webServiceTotalLogonAttempts].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalNonAnonymousUsers,
+			c.webServiceTotalNonAnonymousUsers,
 			prometheus.CounterValue,
-			app[TotalNonAnonymousUsers].FirstValue,
+			app[webServiceTotalNonAnonymousUsers].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalNotFoundErrors,
+			c.webServiceTotalNotFoundErrors,
 			prometheus.CounterValue,
-			app[TotalNotFoundErrors].FirstValue,
+			app[webServiceTotalNotFoundErrors].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRejectedAsyncIORequests,
+			c.webServiceTotalRejectedAsyncIORequests,
 			prometheus.CounterValue,
-			app[TotalRejectedAsyncIORequests].FirstValue,
+			app[webServiceTotalRejectedAsyncIORequests].FirstValue,
 			name,
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRequests,
+			c.webServiceTotalRequests,
 			prometheus.CounterValue,
-			app[TotalOtherRequests].FirstValue,
+			app[webServiceTotalOtherRequests].FirstValue,
 			name,
 			"other",
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRequests,
+			c.webServiceTotalRequests,
 			prometheus.CounterValue,
-			app[TotalCopyRequests].FirstValue,
+			app[webServiceTotalCopyRequests].FirstValue,
 			name,
 			"COPY",
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRequests,
+			c.webServiceTotalRequests,
 			prometheus.CounterValue,
-			app[TotalDeleteRequests].FirstValue,
+			app[webServiceTotalDeleteRequests].FirstValue,
 			name,
 			"DELETE",
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRequests,
+			c.webServiceTotalRequests,
 			prometheus.CounterValue,
-			app[TotalGetRequests].FirstValue,
+			app[webServiceTotalGetRequests].FirstValue,
 			name,
 			"GET",
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRequests,
+			c.webServiceTotalRequests,
 			prometheus.CounterValue,
-			app[TotalHeadRequests].FirstValue,
+			app[webServiceTotalHeadRequests].FirstValue,
 			name,
 			"HEAD",
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRequests,
+			c.webServiceTotalRequests,
 			prometheus.CounterValue,
-			app[TotalLockRequests].FirstValue,
+			app[webServiceTotalLockRequests].FirstValue,
 			name,
 			"LOCK",
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRequests,
+			c.webServiceTotalRequests,
 			prometheus.CounterValue,
-			app[TotalMkcolRequests].FirstValue,
+			app[webServiceTotalMkcolRequests].FirstValue,
 			name,
 			"MKCOL",
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRequests,
+			c.webServiceTotalRequests,
 			prometheus.CounterValue,
-			app[TotalMoveRequests].FirstValue,
+			app[webServiceTotalMoveRequests].FirstValue,
 			name,
 			"MOVE",
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRequests,
+			c.webServiceTotalRequests,
 			prometheus.CounterValue,
-			app[TotalOptionsRequests].FirstValue,
+			app[webServiceTotalOptionsRequests].FirstValue,
 			name,
 			"OPTIONS",
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRequests,
+			c.webServiceTotalRequests,
 			prometheus.CounterValue,
-			app[TotalPostRequests].FirstValue,
+			app[webServiceTotalPostRequests].FirstValue,
 			name,
 			"POST",
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRequests,
+			c.webServiceTotalRequests,
 			prometheus.CounterValue,
-			app[TotalPropfindRequests].FirstValue,
+			app[webServiceTotalPropfindRequests].FirstValue,
 			name,
 			"PROPFIND",
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRequests,
+			c.webServiceTotalRequests,
 			prometheus.CounterValue,
-			app[TotalProppatchRequests].FirstValue,
+			app[webServiceTotalProppatchRequests].FirstValue,
 			name,
 			"PROPPATCH",
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRequests,
+			c.webServiceTotalRequests,
 			prometheus.CounterValue,
-			app[TotalPutRequests].FirstValue,
+			app[webServiceTotalPutRequests].FirstValue,
 			name,
 			"PUT",
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRequests,
+			c.webServiceTotalRequests,
 			prometheus.CounterValue,
-			app[TotalSearchRequests].FirstValue,
+			app[webServiceTotalSearchRequests].FirstValue,
 			name,
 			"SEARCH",
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRequests,
+			c.webServiceTotalRequests,
 			prometheus.CounterValue,
-			app[TotalTraceRequests].FirstValue,
+			app[webServiceTotalTraceRequests].FirstValue,
 			name,
 			"TRACE",
 		)
 		ch <- prometheus.MustNewConstMetric(
-			c.totalRequests,
+			c.webServiceTotalRequests,
 			prometheus.CounterValue,
-			app[TotalUnlockRequests].FirstValue,
+			app[webServiceTotalUnlockRequests].FirstValue,
 			name,
 			"UNLOCK",
 		)

internal/collector/iis/iis_web_service_cache.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package iis
@@ -11,7 +24,7 @@ import (
 )
 
 type collectorWebServiceCache struct {
-	perfDataCollectorWebServiceCache *perfdata.Collector
+	serviceCachePerfDataCollector *perfdata.Collector
 
 	serviceCacheActiveFlushedEntries *prometheus.Desc
 
@@ -48,80 +61,80 @@ type collectorWebServiceCache struct {
 }
 
 const (
-	ServiceCacheActiveFlushedEntries          = "Active Flushed Entries"
-	ServiceCacheCurrentFileCacheMemoryUsage   = "Current File Cache Memory Usage"
-	ServiceCacheMaximumFileCacheMemoryUsage   = "Maximum File Cache Memory Usage"
-	ServiceCacheFileCacheFlushesTotal         = "File Cache Flushes"
-	ServiceCacheFileCacheHitsTotal            = "File Cache Hits"
-	ServiceCacheFileCacheMissesTotal          = "File Cache Misses"
-	ServiceCacheFilesCached                   = "Current Files Cached"
-	ServiceCacheFilesCachedTotal              = "Total Files Cached"
-	ServiceCacheFilesFlushedTotal             = "Total Flushed Files"
-	ServiceCacheURICacheFlushesTotal          = "Total Flushed URIs"
-	ServiceCacheURICacheFlushesTotalKernel    = "Total Flushed URIs"
-	ServiceCacheURIsFlushedTotalKernel        = "Kernel: Total Flushed URIs"
-	ServiceCacheURICacheHitsTotal             = "URI Cache Hits"
-	ServiceCacheURICacheHitsTotalKernel       = "Kernel: URI Cache Hits"
-	ServiceCacheURICacheMissesTotal           = "URI Cache Misses"
-	ServiceCacheURICacheMissesTotalKernel     = "Kernel: URI Cache Misses"
-	ServiceCacheURIsCached                    = "Current URIs Cached"
-	ServiceCacheURIsCachedKernel              = "Kernel: Current URIs Cached"
-	ServiceCacheURIsCachedTotal               = "Total URIs Cached"
-	ServiceCacheURIsCachedTotalKernel         = "Total URIs Cached"
-	ServiceCacheURIsFlushedTotal              = "Total Flushed URIs"
-	ServiceCacheMetaDataCacheHits             = "Metadata Cache Hits"
-	ServiceCacheMetaDataCacheMisses           = "Metadata Cache Misses"
-	ServiceCacheMetadataCached                = "Current Metadata Cached"
-	ServiceCacheMetadataCacheFlushes          = "Metadata Cache Flushes"
-	ServiceCacheMetadataCachedTotal           = "Total Metadata Cached"
-	ServiceCacheMetadataFlushedTotal          = "Total Flushed Metadata"
-	ServiceCacheOutputCacheActiveFlushedItems = "Output Cache Current Flushed Items"
-	ServiceCacheOutputCacheItems              = "Output Cache Current Items"
-	ServiceCacheOutputCacheMemoryUsage        = "Output Cache Current Memory Usage"
-	ServiceCacheOutputCacheHitsTotal          = "Output Cache Total Hits"
-	ServiceCacheOutputCacheMissesTotal        = "Output Cache Total Misses"
-	ServiceCacheOutputCacheFlushedItemsTotal  = "Output Cache Total Flushed Items"
-	ServiceCacheOutputCacheFlushesTotal       = "Output Cache Total Flushes"
+	serviceCacheActiveFlushedEntries          = "Active Flushed Entries"
+	serviceCacheCurrentFileCacheMemoryUsage   = "Current File Cache Memory Usage"
+	serviceCacheMaximumFileCacheMemoryUsage   = "Maximum File Cache Memory Usage"
+	serviceCacheFileCacheFlushesTotal         = "File Cache Flushes"
+	serviceCacheFileCacheHitsTotal            = "File Cache Hits"
+	serviceCacheFileCacheMissesTotal          = "File Cache Misses"
+	serviceCacheFilesCached                   = "Current Files Cached"
+	serviceCacheFilesCachedTotal              = "Total Files Cached"
+	serviceCacheFilesFlushedTotal             = "Total Flushed Files"
+	serviceCacheURICacheFlushesTotal          = "Total Flushed URIs"
+	serviceCacheURICacheFlushesTotalKernel    = "Total Flushed URIs"
+	serviceCacheURIsFlushedTotalKernel        = "Kernel: Total Flushed URIs"
+	serviceCacheURICacheHitsTotal             = "URI Cache Hits"
+	serviceCacheURICacheHitsTotalKernel       = "Kernel: URI Cache Hits"
+	serviceCacheURICacheMissesTotal           = "URI Cache Misses"
+	serviceCacheURICacheMissesTotalKernel     = "Kernel: URI Cache Misses"
+	serviceCacheURIsCached                    = "Current URIs Cached"
+	serviceCacheURIsCachedKernel              = "Kernel: Current URIs Cached"
+	serviceCacheURIsCachedTotal               = "Total URIs Cached"
+	serviceCacheURIsCachedTotalKernel         = "Total URIs Cached"
+	serviceCacheURIsFlushedTotal              = "Total Flushed URIs"
+	serviceCacheMetaDataCacheHits             = "Metadata Cache Hits"
+	serviceCacheMetaDataCacheMisses           = "Metadata Cache Misses"
+	serviceCacheMetadataCached                = "Current Metadata Cached"
+	serviceCacheMetadataCacheFlushes          = "Metadata Cache Flushes"
+	serviceCacheMetadataCachedTotal           = "Total Metadata Cached"
+	serviceCacheMetadataFlushedTotal          = "Total Flushed Metadata"
+	serviceCacheOutputCacheActiveFlushedItems = "Output Cache Current Flushed Items"
+	serviceCacheOutputCacheItems              = "Output Cache Current Items"
+	serviceCacheOutputCacheMemoryUsage        = "Output Cache Current Memory Usage"
+	serviceCacheOutputCacheHitsTotal          = "Output Cache Total Hits"
+	serviceCacheOutputCacheMissesTotal        = "Output Cache Total Misses"
+	serviceCacheOutputCacheFlushedItemsTotal  = "Output Cache Total Flushed Items"
+	serviceCacheOutputCacheFlushesTotal       = "Output Cache Total Flushes"
 )
 
 func (c *Collector) buildWebServiceCache() error {
 	var err error
 
-	c.perfDataCollectorWebService, err = perfdata.NewCollector("Web Service Cache", perfdata.InstanceAll, []string{
-		ServiceCacheActiveFlushedEntries,
-		ServiceCacheCurrentFileCacheMemoryUsage,
-		ServiceCacheMaximumFileCacheMemoryUsage,
-		ServiceCacheFileCacheFlushesTotal,
-		ServiceCacheFileCacheHitsTotal,
-		ServiceCacheFileCacheMissesTotal,
-		ServiceCacheFilesCached,
-		ServiceCacheFilesCachedTotal,
-		ServiceCacheFilesFlushedTotal,
-		ServiceCacheURICacheFlushesTotal,
-		ServiceCacheURICacheFlushesTotalKernel,
-		ServiceCacheURIsFlushedTotalKernel,
-		ServiceCacheURICacheHitsTotal,
-		ServiceCacheURICacheHitsTotalKernel,
-		ServiceCacheURICacheMissesTotal,
-		ServiceCacheURICacheMissesTotalKernel,
-		ServiceCacheURIsCached,
-		ServiceCacheURIsCachedKernel,
-		ServiceCacheURIsCachedTotal,
-		ServiceCacheURIsCachedTotalKernel,
-		ServiceCacheURIsFlushedTotal,
-		ServiceCacheMetaDataCacheHits,
-		ServiceCacheMetaDataCacheMisses,
-		ServiceCacheMetadataCached,
-		ServiceCacheMetadataCacheFlushes,
-		ServiceCacheMetadataCachedTotal,
-		ServiceCacheMetadataFlushedTotal,
-		ServiceCacheOutputCacheActiveFlushedItems,
-		ServiceCacheOutputCacheItems,
-		ServiceCacheOutputCacheMemoryUsage,
-		ServiceCacheOutputCacheHitsTotal,
-		ServiceCacheOutputCacheMissesTotal,
-		ServiceCacheOutputCacheFlushedItemsTotal,
-		ServiceCacheOutputCacheFlushesTotal,
+	c.perfDataCollectorWebService, err = perfdata.NewCollector("Web Service Cache", perfdata.InstancesAll, []string{
+		serviceCacheActiveFlushedEntries,
+		serviceCacheCurrentFileCacheMemoryUsage,
+		serviceCacheMaximumFileCacheMemoryUsage,
+		serviceCacheFileCacheFlushesTotal,
+		serviceCacheFileCacheHitsTotal,
+		serviceCacheFileCacheMissesTotal,
+		serviceCacheFilesCached,
+		serviceCacheFilesCachedTotal,
+		serviceCacheFilesFlushedTotal,
+		serviceCacheURICacheFlushesTotal,
+		serviceCacheURICacheFlushesTotalKernel,
+		serviceCacheURIsFlushedTotalKernel,
+		serviceCacheURICacheHitsTotal,
+		serviceCacheURICacheHitsTotalKernel,
+		serviceCacheURICacheMissesTotal,
+		serviceCacheURICacheMissesTotalKernel,
+		serviceCacheURIsCached,
+		serviceCacheURIsCachedKernel,
+		serviceCacheURIsCachedTotal,
+		serviceCacheURIsCachedTotalKernel,
+		serviceCacheURIsFlushedTotal,
+		serviceCacheMetaDataCacheHits,
+		serviceCacheMetaDataCacheMisses,
+		serviceCacheMetadataCached,
+		serviceCacheMetadataCacheFlushes,
+		serviceCacheMetadataCachedTotal,
+		serviceCacheMetadataFlushedTotal,
+		serviceCacheOutputCacheActiveFlushedItems,
+		serviceCacheOutputCacheItems,
+		serviceCacheOutputCacheMemoryUsage,
+		serviceCacheOutputCacheHitsTotal,
+		serviceCacheOutputCacheMissesTotal,
+		serviceCacheOutputCacheFlushedItemsTotal,
+		serviceCacheOutputCacheFlushesTotal,
 	})
 	if err != nil {
 		return fmt.Errorf("failed to create Web Service Cache collector: %w", err)
@@ -316,184 +329,184 @@ func (c *Collector) collectWebServiceCache(ch chan<- prometheus.Metric) error {
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheActiveFlushedEntries,
 			prometheus.GaugeValue,
-			app[ServiceCacheActiveFlushedEntries].FirstValue,
+			app[serviceCacheActiveFlushedEntries].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheCurrentFileCacheMemoryUsage,
 			prometheus.GaugeValue,
-			app[ServiceCacheCurrentFileCacheMemoryUsage].FirstValue,
+			app[serviceCacheCurrentFileCacheMemoryUsage].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheMaximumFileCacheMemoryUsage,
 			prometheus.CounterValue,
-			app[ServiceCacheMaximumFileCacheMemoryUsage].FirstValue,
+			app[serviceCacheMaximumFileCacheMemoryUsage].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheFileCacheFlushesTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheFileCacheFlushesTotal].FirstValue,
+			app[serviceCacheFileCacheFlushesTotal].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheFileCacheQueriesTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheFileCacheHitsTotal].FirstValue+app[ServiceCacheFileCacheMissesTotal].FirstValue,
+			app[serviceCacheFileCacheHitsTotal].FirstValue+app[serviceCacheFileCacheMissesTotal].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheFileCacheHitsTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheFileCacheHitsTotal].FirstValue,
+			app[serviceCacheFileCacheHitsTotal].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheFilesCached,
 			prometheus.GaugeValue,
-			app[ServiceCacheFilesCached].FirstValue,
+			app[serviceCacheFilesCached].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheFilesCachedTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheFilesCachedTotal].FirstValue,
+			app[serviceCacheFilesCachedTotal].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheFilesFlushedTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheFilesFlushedTotal].FirstValue,
+			app[serviceCacheFilesFlushedTotal].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheURICacheFlushesTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheURICacheFlushesTotal].FirstValue,
+			app[serviceCacheURICacheFlushesTotal].FirstValue,
 			"user",
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheURICacheFlushesTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheURICacheFlushesTotalKernel].FirstValue,
+			app[serviceCacheURICacheFlushesTotalKernel].FirstValue,
 			"kernel",
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheURICacheQueriesTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheURICacheHitsTotal].FirstValue+app[ServiceCacheURICacheMissesTotal].FirstValue,
+			app[serviceCacheURICacheHitsTotal].FirstValue+app[serviceCacheURICacheMissesTotal].FirstValue,
 			"user",
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheURICacheQueriesTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheURICacheHitsTotalKernel].FirstValue+app[ServiceCacheURICacheMissesTotalKernel].FirstValue,
+			app[serviceCacheURICacheHitsTotalKernel].FirstValue+app[serviceCacheURICacheMissesTotalKernel].FirstValue,
 			"kernel",
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheURICacheHitsTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheURICacheHitsTotal].FirstValue,
+			app[serviceCacheURICacheHitsTotal].FirstValue,
 			"user",
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheURICacheHitsTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheURICacheHitsTotalKernel].FirstValue,
+			app[serviceCacheURICacheHitsTotalKernel].FirstValue,
 			"kernel",
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheURIsCached,
 			prometheus.GaugeValue,
-			app[ServiceCacheURIsCached].FirstValue,
+			app[serviceCacheURIsCached].FirstValue,
 			"user",
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheURIsCached,
 			prometheus.GaugeValue,
-			app[ServiceCacheURIsCachedKernel].FirstValue,
+			app[serviceCacheURIsCachedKernel].FirstValue,
 			"kernel",
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheURIsCachedTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheURIsCachedTotal].FirstValue,
+			app[serviceCacheURIsCachedTotal].FirstValue,
 			"user",
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheURIsCachedTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheURIsCachedTotalKernel].FirstValue,
+			app[serviceCacheURIsCachedTotalKernel].FirstValue,
 			"kernel",
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheURIsFlushedTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheURIsFlushedTotal].FirstValue,
+			app[serviceCacheURIsFlushedTotal].FirstValue,
 			"user",
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheURIsFlushedTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheURIsFlushedTotalKernel].FirstValue,
+			app[serviceCacheURIsFlushedTotalKernel].FirstValue,
 			"kernel",
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheMetadataCached,
 			prometheus.GaugeValue,
-			app[ServiceCacheMetadataCached].FirstValue,
+			app[serviceCacheMetadataCached].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheMetadataCacheFlushes,
 			prometheus.CounterValue,
-			app[ServiceCacheMetadataCacheFlushes].FirstValue,
+			app[serviceCacheMetadataCacheFlushes].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheMetadataCacheQueriesTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheMetaDataCacheHits].FirstValue+app[ServiceCacheMetaDataCacheMisses].FirstValue,
+			app[serviceCacheMetaDataCacheHits].FirstValue+app[serviceCacheMetaDataCacheMisses].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheMetadataCacheHitsTotal,
 			prometheus.CounterValue,
-			0, // app[ServiceCacheMetadataCacheHitsTotal].FirstValue,
+			0, // app[serviceCacheMetadataCacheHitsTotal].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheMetadataCachedTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheMetadataCachedTotal].FirstValue,
+			app[serviceCacheMetadataCachedTotal].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheMetadataFlushedTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheMetadataFlushedTotal].FirstValue,
+			app[serviceCacheMetadataFlushedTotal].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheOutputCacheActiveFlushedItems,
 			prometheus.CounterValue,
-			app[ServiceCacheOutputCacheActiveFlushedItems].FirstValue,
+			app[serviceCacheOutputCacheActiveFlushedItems].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheOutputCacheItems,
 			prometheus.CounterValue,
-			app[ServiceCacheOutputCacheItems].FirstValue,
+			app[serviceCacheOutputCacheItems].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheOutputCacheMemoryUsage,
 			prometheus.CounterValue,
-			app[ServiceCacheOutputCacheMemoryUsage].FirstValue,
+			app[serviceCacheOutputCacheMemoryUsage].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheOutputCacheQueriesTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheOutputCacheHitsTotal].FirstValue+app[ServiceCacheOutputCacheMissesTotal].FirstValue,
+			app[serviceCacheOutputCacheHitsTotal].FirstValue+app[serviceCacheOutputCacheMissesTotal].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheOutputCacheHitsTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheOutputCacheHitsTotal].FirstValue,
+			app[serviceCacheOutputCacheHitsTotal].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheOutputCacheFlushedItemsTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheOutputCacheFlushedItemsTotal].FirstValue,
+			app[serviceCacheOutputCacheFlushedItemsTotal].FirstValue,
 		)
 		ch <- prometheus.MustNewConstMetric(
 			c.serviceCacheOutputCacheFlushesTotal,
 			prometheus.CounterValue,
-			app[ServiceCacheOutputCacheFlushesTotal].FirstValue,
+			app[serviceCacheOutputCacheFlushesTotal].FirstValue,
 		)
 	}
 

internal/collector/license/license.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package license
@@ -14,6 +27,7 @@ import (
 
 const Name = "license"
 
+//nolint:gochecknoglobals
 var labelMap = map[slc.SL_GENUINE_STATE]string{
 	slc.SL_GEN_STATE_IS_GENUINE:      "genuine",
 	slc.SL_GEN_STATE_INVALID_LICENSE: "invalid_license",
@@ -24,6 +38,7 @@ var labelMap = map[slc.SL_GENUINE_STATE]string{
 
 type Config struct{}
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{}
 
 // A Collector is a Prometheus Collector for WMI Win32_PerfRawData_DNS_DNS metrics.

internal/collector/license/license_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package license_test

internal/collector/logical_disk/const.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package logical_disk

internal/collector/logical_disk/logical_disk.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package logical_disk
@@ -26,6 +39,7 @@ type Config struct {
 	VolumeExclude *regexp.Regexp `yaml:"volume_exclude"`
 }
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{
 	VolumeInclude: types.RegExpAny,
 	VolumeExclude: types.RegExpEmpty,
@@ -136,7 +150,7 @@ func (c *Collector) Build(logger *slog.Logger, _ *mi.Session) error {
 
 	var err error
 
-	c.perfDataCollector, err = perfdata.NewCollector("LogicalDisk", perfdata.InstanceAll, []string{
+	c.perfDataCollector, err = perfdata.NewCollector("LogicalDisk", perfdata.InstancesAll, []string{
 		currentDiskQueueLength,
 		avgDiskReadQueueLength,
 		avgDiskWriteQueueLength,
@@ -468,14 +482,17 @@ func getVolumeInfo(rootDrive string) (volumeInfo, error) {
 
 	// If rootDrive is a NTFS directory, convert it to a volume GUID.
 	if strings.Contains(volumePath, `\`) {
-		volumePathName, err := windows.UTF16PtrFromString(volumePath + `\`)
+		// GetVolumeNameForVolumeMountPoint expects a trailing backslash.
+		volumePath += `\`
+
+		volumePathName, err := windows.UTF16PtrFromString(volumePath)
 		if err != nil {
-			return volumeInfo{}, fmt.Errorf("could not convert rootDrive to volume path: %w", err)
+			return volumeInfo{}, fmt.Errorf("could not convert rootDrive to volume path %s: %w", volumePath, err)
 		}
 
 		volumeGUIDPtr := make([]uint16, 50)
 		if err := windows.GetVolumeNameForVolumeMountPoint(volumePathName, &volumeGUIDPtr[0], uint32(len(volumeGUIDPtr))); err != nil {
-			panic(fmt.Errorf("could not get volume GUID: %w", err))
+			return volumeInfo{}, fmt.Errorf("could not get volume GUID for volume %s: %w", volumePath, err)
 		}
 
 		volumePath = windows.UTF16ToString(volumeGUIDPtr)

internal/collector/logical_disk/logical_disk_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package logical_disk_test

internal/collector/logon/logon.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package logon
@@ -17,6 +30,7 @@ const Name = "logon"
 
 type Config struct{}
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{}
 
 // A Collector is a Prometheus Collector for WMI metrics.

internal/collector/logon/logon_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package logon_test

internal/collector/memory/const.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package memory

internal/collector/memory/memory.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 // returns data points from Win32_PerfRawData_PerfOS_Memory
 // <add link to documentation here> - Win32_PerfRawData_PerfOS_Memory class
 
@@ -22,6 +35,7 @@ const Name = "memory"
 
 type Config struct{}
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{}
 
 // A Collector is a Prometheus Collector for perflib Memory metrics.
@@ -90,10 +104,6 @@ func (c *Collector) GetName() string {
 	return Name
 }
 
-func (c *Collector) GetPerfCounter(_ *slog.Logger) ([]string, error) {
-	return []string{}, nil
-}
-
 func (c *Collector) Close() error {
 	return nil
 }
@@ -138,7 +148,7 @@ func (c *Collector) Build(_ *slog.Logger, _ *mi.Session) error {
 
 	var err error
 
-	c.perfDataCollector, err = perfdata.NewCollector("Memory", perfdata.InstanceAll, counters)
+	c.perfDataCollector, err = perfdata.NewCollector("Memory", perfdata.InstancesAll, counters)
 	if err != nil {
 		return fmt.Errorf("failed to create Memory collector: %w", err)
 	}
@@ -418,10 +428,10 @@ func (c *Collector) collectPDH(ch chan<- prometheus.Metric) error {
 		return fmt.Errorf("failed to collect Memory metrics: %w", err)
 	}
 
-	data, ok := perfData[perfdata.EmptyInstance]
+	data, ok := perfData[perfdata.InstanceEmpty]
 
 	if !ok {
-		return errors.New("perflib query for Memory returned empty result set")
+		return fmt.Errorf("failed to collect Memory metrics: %w", types.ErrNoData)
 	}
 
 	ch <- prometheus.MustNewConstMetric(

internal/collector/memory/memory_test.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package memory_test

internal/collector/mscluster/mscluster.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package mscluster
@@ -8,25 +21,35 @@ import (
 	"log/slog"
 	"slices"
 	"strings"
+	"sync"
 
 	"github.com/alecthomas/kingpin/v2"
 	"github.com/prometheus-community/windows_exporter/internal/mi"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
-const Name = "mscluster"
+const (
+	Name = "mscluster"
+
+	subCollectorCluster       = "cluster"
+	subCollectorNetwork       = "network"
+	subCollectorNode          = "node"
+	subCollectorResource      = "resource"
+	subCollectorResourceGroup = "resourcegroup"
+)
 
 type Config struct {
 	CollectorsEnabled []string `yaml:"collectors_enabled"`
 }
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{
 	CollectorsEnabled: []string{
-		"cluster",
-		"network",
-		"node",
-		"resource",
-		"resourcegroup",
+		subCollectorCluster,
+		subCollectorNetwork,
+		subCollectorNode,
+		subCollectorResource,
+		subCollectorResourceGroup,
 	},
 }
 
@@ -84,10 +107,6 @@ func (c *Collector) GetName() string {
 	return Name
 }
 
-func (c *Collector) GetPerfCounter(_ *slog.Logger) ([]string, error) {
-	return []string{"Memory"}, nil
-}
-
 func (c *Collector) Close() error {
 	return nil
 }
@@ -103,27 +122,39 @@ func (c *Collector) Build(_ *slog.Logger, miSession *mi.Session) error {
 
 	c.miSession = miSession
 
-	if slices.Contains(c.config.CollectorsEnabled, "cluster") {
-		c.buildCluster()
+	errs := make([]error, 0, 5)
+
+	if slices.Contains(c.config.CollectorsEnabled, subCollectorCluster) {
+		if err := c.buildCluster(); err != nil {
+			errs = append(errs, fmt.Errorf("failed to build cluster collector: %w", err))
+		}
 	}
 
-	if slices.Contains(c.config.CollectorsEnabled, "network") {
-		c.buildNetwork()
+	if slices.Contains(c.config.CollectorsEnabled, subCollectorNetwork) {
+		if err := c.buildNetwork(); err != nil {
+			errs = append(errs, fmt.Errorf("failed to build network collector: %w", err))
+		}
 	}
 
-	if slices.Contains(c.config.CollectorsEnabled, "node") {
-		c.buildNode()
+	if slices.Contains(c.config.CollectorsEnabled, subCollectorNode) {
+		if err := c.buildNode(); err != nil {
+			errs = append(errs, fmt.Errorf("failed to build node collector: %w", err))
+		}
 	}
 
-	if slices.Contains(c.config.CollectorsEnabled, "resource") {
-		c.buildResource()
+	if slices.Contains(c.config.CollectorsEnabled, subCollectorResource) {
+		if err := c.buildResource(); err != nil {
+			errs = append(errs, fmt.Errorf("failed to build resource collector: %w", err))
+		}
 	}
 
-	if slices.Contains(c.config.CollectorsEnabled, "resourcegroup") {
-		c.buildResourceGroup()
+	if slices.Contains(c.config.CollectorsEnabled, subCollectorResourceGroup) {
+		if err := c.buildResourceGroup(); err != nil {
+			errs = append(errs, fmt.Errorf("failed to build resource group collector: %w", err))
+		}
 	}
 
-	return nil
+	return errors.Join(errs...)
 }
 
 // Collect sends the metric values for each metric
@@ -133,40 +164,73 @@ func (c *Collector) Collect(ch chan<- prometheus.Metric) error {
 		return nil
 	}
 
-	var (
-		err       error
-		errs      []error
-		nodeNames []string
-	)
+	errCh := make(chan error, 5)
 
-	if slices.Contains(c.config.CollectorsEnabled, "cluster") {
-		if err = c.collectCluster(ch); err != nil {
-			errs = append(errs, fmt.Errorf("failed to collect cluster metrics: %w", err))
-		}
-	}
+	wg := sync.WaitGroup{}
+	wg.Add(5)
 
-	if slices.Contains(c.config.CollectorsEnabled, "network") {
-		if err = c.collectNetwork(ch); err != nil {
-			errs = append(errs, fmt.Errorf("failed to collect network metrics: %w", err))
-		}
-	}
+	go func() {
+		defer wg.Done()
 
-	if slices.Contains(c.config.CollectorsEnabled, "node") {
-		if nodeNames, err = c.collectNode(ch); err != nil {
-			errs = append(errs, fmt.Errorf("failed to collect node metrics: %w", err))
+		if slices.Contains(c.config.CollectorsEnabled, subCollectorCluster) {
+			if err := c.collectCluster(ch); err != nil {
+				errCh <- fmt.Errorf("failed to collect cluster metrics: %w", err)
+			}
 		}
-	}
+	}()
 
-	if slices.Contains(c.config.CollectorsEnabled, "resource") {
-		if err = c.collectResource(ch, nodeNames); err != nil {
-			errs = append(errs, fmt.Errorf("failed to collect resource metrics: %w", err))
-		}
-	}
+	go func() {
+		defer wg.Done()
 
-	if slices.Contains(c.config.CollectorsEnabled, "resourcegroup") {
-		if err = c.collectResourceGroup(ch, nodeNames); err != nil {
-			errs = append(errs, fmt.Errorf("failed to collect resource group metrics: %w", err))
+		if slices.Contains(c.config.CollectorsEnabled, subCollectorNetwork) {
+			if err := c.collectNetwork(ch); err != nil {
+				errCh <- fmt.Errorf("failed to collect network metrics: %w", err)
+			}
 		}
+	}()
+
+	go func() {
+		defer wg.Done()
+
+		nodeNames := make([]string, 0)
+
+		if slices.Contains(c.config.CollectorsEnabled, subCollectorNode) {
+			var err error
+
+			nodeNames, err = c.collectNode(ch)
+			if err != nil {
+				errCh <- fmt.Errorf("failed to collect node metrics: %w", err)
+			}
+		}
+
+		go func() {
+			defer wg.Done()
+
+			if slices.Contains(c.config.CollectorsEnabled, subCollectorResource) {
+				if err := c.collectResource(ch, nodeNames); err != nil {
+					errCh <- fmt.Errorf("failed to collect resource metrics: %w", err)
+				}
+			}
+		}()
+
+		go func() {
+			defer wg.Done()
+
+			if slices.Contains(c.config.CollectorsEnabled, subCollectorResourceGroup) {
+				if err := c.collectResourceGroup(ch, nodeNames); err != nil {
+					errCh <- fmt.Errorf("failed to collect resource group metrics: %w", err)
+				}
+			}
+		}()
+	}()
+
+	wg.Wait()
+	close(errCh)
+
+	errs := make([]error, 0, 5)
+
+	for err := range errCh {
+		errs = append(errs, err)
 	}
 
 	return errors.Join(errs...)

internal/collector/mscluster/mscluster_cluster.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package mscluster
@@ -7,13 +20,14 @@ import (
 
 	"github.com/prometheus-community/windows_exporter/internal/mi"
 	"github.com/prometheus-community/windows_exporter/internal/types"
-	"github.com/prometheus-community/windows_exporter/internal/utils"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
 const nameCluster = Name + "_cluster"
 
 type collectorCluster struct {
+	clusterMIQuery mi.Query
+
 	clusterAddEvictDelay                           *prometheus.Desc
 	clusterAdminAccessPoint                        *prometheus.Desc
 	clusterAutoAssignNodeSite                      *prometheus.Desc
@@ -177,7 +191,14 @@ type msClusterCluster struct {
 	WitnessRestartInterval                  uint `mi:"WitnessRestartInterval"`
 }
 
-func (c *Collector) buildCluster() {
+func (c *Collector) buildCluster() error {
+	clusterMIQuery, err := mi.NewQuery("SELECT * FROM MSCluster_Cluster")
+	if err != nil {
+		return fmt.Errorf("failed to create WMI query: %w", err)
+	}
+
+	c.clusterMIQuery = clusterMIQuery
+
 	c.clusterAddEvictDelay = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, nameCluster, "add_evict_delay"),
 		"Provides access to the cluster's AddEvictDelay property, which is the number a seconds that a new node is delayed after an eviction of another node.",
@@ -640,11 +661,18 @@ func (c *Collector) buildCluster() {
 		[]string{"name"},
 		nil,
 	)
+
+	var dst []msClusterCluster
+	if err := c.miSession.Query(&dst, mi.NamespaceRootMSCluster, c.clusterMIQuery); err != nil {
+		return fmt.Errorf("WMI query failed: %w", err)
+	}
+
+	return nil
 }
 
 func (c *Collector) collectCluster(ch chan<- prometheus.Metric) error {
 	var dst []msClusterCluster
-	if err := c.miSession.Query(&dst, mi.NamespaceRootMSCluster, utils.Must(mi.NewQuery("SELECT * MSCluster_Cluster"))); err != nil {
+	if err := c.miSession.Query(&dst, mi.NamespaceRootMSCluster, c.clusterMIQuery); err != nil {
 		return fmt.Errorf("WMI query failed: %w", err)
 	}
 

internal/collector/mscluster/mscluster_network.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package mscluster
@@ -7,13 +20,14 @@ import (
 
 	"github.com/prometheus-community/windows_exporter/internal/mi"
 	"github.com/prometheus-community/windows_exporter/internal/types"
-	"github.com/prometheus-community/windows_exporter/internal/utils"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
 const nameNetwork = Name + "_network"
 
 type collectorNetwork struct {
+	networkMIQuery mi.Query
+
 	networkCharacteristics *prometheus.Desc
 	networkFlags           *prometheus.Desc
 	networkMetric          *prometheus.Desc
@@ -33,7 +47,14 @@ type msClusterNetwork struct {
 	State           uint `mi:"State"`
 }
 
-func (c *Collector) buildNetwork() {
+func (c *Collector) buildNetwork() error {
+	networkMIQuery, err := mi.NewQuery("SELECT * FROM MSCluster_Network")
+	if err != nil {
+		return fmt.Errorf("failed to create WMI query: %w", err)
+	}
+
+	c.networkMIQuery = networkMIQuery
+
 	c.networkCharacteristics = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, nameNetwork, "characteristics"),
 		"Provides the characteristics of the network.",
@@ -64,6 +85,14 @@ func (c *Collector) buildNetwork() {
 		[]string{"name"},
 		nil,
 	)
+
+	var dst []msClusterNetwork
+
+	if err := c.miSession.Query(&dst, mi.NamespaceRootMSCluster, c.networkMIQuery); err != nil {
+		return fmt.Errorf("WMI query failed: %w", err)
+	}
+
+	return nil
 }
 
 // Collect sends the metric values for each metric
@@ -71,7 +100,7 @@ func (c *Collector) buildNetwork() {
 func (c *Collector) collectNetwork(ch chan<- prometheus.Metric) error {
 	var dst []msClusterNetwork
 
-	if err := c.miSession.Query(&dst, mi.NamespaceRootMSCluster, utils.Must(mi.NewQuery("SELECT * MSCluster_Node"))); err != nil {
+	if err := c.miSession.Query(&dst, mi.NamespaceRootMSCluster, c.networkMIQuery); err != nil {
 		return fmt.Errorf("WMI query failed: %w", err)
 	}
 

internal/collector/mscluster/mscluster_node.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package mscluster
@@ -7,13 +20,14 @@ import (
 
 	"github.com/prometheus-community/windows_exporter/internal/mi"
 	"github.com/prometheus-community/windows_exporter/internal/types"
-	"github.com/prometheus-community/windows_exporter/internal/utils"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
 const nameNode = Name + "_node"
 
 type collectorNode struct {
+	nodeMIQuery mi.Query
+
 	nodeBuildNumber           *prometheus.Desc
 	nodeCharacteristics       *prometheus.Desc
 	nodeDetectedCloudPlatform *prometheus.Desc
@@ -51,7 +65,14 @@ type msClusterNode struct {
 	StatusInformation     uint `mi:"StatusInformation"`
 }
 
-func (c *Collector) buildNode() {
+func (c *Collector) buildNode() error {
+	nodeMIQuery, err := mi.NewQuery("SELECT * FROM MSCluster_Node")
+	if err != nil {
+		return fmt.Errorf("failed to create WMI query: %w", err)
+	}
+
+	c.nodeMIQuery = nodeMIQuery
+
 	c.nodeBuildNumber = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, nameNode, "build_number"),
 		"Provides access to the node's BuildNumber property.",
@@ -136,6 +157,14 @@ func (c *Collector) buildNode() {
 		[]string{"name"},
 		nil,
 	)
+
+	var dst []msClusterNode
+
+	if err := c.miSession.Query(&dst, mi.NamespaceRootMSCluster, c.nodeMIQuery); err != nil {
+		return fmt.Errorf("WMI query failed: %w", err)
+	}
+
+	return nil
 }
 
 // Collect sends the metric values for each metric
@@ -143,7 +172,7 @@ func (c *Collector) buildNode() {
 func (c *Collector) collectNode(ch chan<- prometheus.Metric) ([]string, error) {
 	var dst []msClusterNode
 
-	if err := c.miSession.Query(&dst, mi.NamespaceRootMSCluster, utils.Must(mi.NewQuery("SELECT * FROM MSCluster_Node"))); err != nil {
+	if err := c.miSession.Query(&dst, mi.NamespaceRootMSCluster, c.nodeMIQuery); err != nil {
 		return nil, fmt.Errorf("WMI query failed: %w", err)
 	}
 

internal/collector/mscluster/mscluster_resource.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package mscluster
@@ -7,13 +20,14 @@ import (
 
 	"github.com/prometheus-community/windows_exporter/internal/mi"
 	"github.com/prometheus-community/windows_exporter/internal/types"
-	"github.com/prometheus-community/windows_exporter/internal/utils"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
 const nameResource = Name + "_resource"
 
 type collectorResource struct {
+	resourceMIQuery mi.Query
+
 	resourceCharacteristics        *prometheus.Desc
 	resourceDeadlockTimeout        *prometheus.Desc
 	resourceEmbeddedFailureAction  *prometheus.Desc
@@ -59,7 +73,14 @@ type msClusterResource struct {
 	Subclass               uint `mi:"Subclass"`
 }
 
-func (c *Collector) buildResource() {
+func (c *Collector) buildResource() error {
+	resourceMIQuery, err := mi.NewQuery("SELECT * FROM MSCluster_Resource")
+	if err != nil {
+		return fmt.Errorf("failed to create WMI query: %w", err)
+	}
+
+	c.resourceMIQuery = resourceMIQuery
+
 	c.resourceCharacteristics = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, nameResource, "characteristics"),
 		"Provides the characteristics of the object.",
@@ -168,6 +189,14 @@ func (c *Collector) buildResource() {
 		[]string{"type", "owner_group", "name"},
 		nil,
 	)
+
+	var dst []msClusterResource
+
+	if err := c.miSession.Query(&dst, mi.NamespaceRootMSCluster, c.resourceMIQuery); err != nil {
+		return fmt.Errorf("WMI query failed: %w", err)
+	}
+
+	return nil
 }
 
 // Collect sends the metric values for each metric
@@ -175,7 +204,7 @@ func (c *Collector) buildResource() {
 func (c *Collector) collectResource(ch chan<- prometheus.Metric, nodeNames []string) error {
 	var dst []msClusterResource
 
-	if err := c.miSession.Query(&dst, mi.NamespaceRootMSCluster, utils.Must(mi.NewQuery("SELECT * FROM MSCluster_Resource"))); err != nil {
+	if err := c.miSession.Query(&dst, mi.NamespaceRootMSCluster, c.resourceMIQuery); err != nil {
 		return fmt.Errorf("WMI query failed: %w", err)
 	}
 

internal/collector/mscluster/mscluster_resourcegroup.go

@@ -1,3 +1,16 @@
+// Copyright 2024 The Prometheus 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.
+
 //go:build windows
 
 package mscluster
@@ -7,13 +20,14 @@ import (
 
 	"github.com/prometheus-community/windows_exporter/internal/mi"
 	"github.com/prometheus-community/windows_exporter/internal/types"
-	"github.com/prometheus-community/windows_exporter/internal/utils"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
 const nameResourceGroup = Name + "_resourcegroup"
 
 type collectorResourceGroup struct {
+	resourceGroupMIQuery mi.Query
+
 	resourceGroupAutoFailbackType    *prometheus.Desc
 	resourceGroupCharacteristics     *prometheus.Desc
 	resourceGroupColdStartSetting    *prometheus.Desc
@@ -51,7 +65,14 @@ type msClusterResourceGroup struct {
 	State               uint   `mi:"State"`
 }
 
-func (c *Collector) buildResourceGroup() {
+func (c *Collector) buildResourceGroup() error {
+	resourceGroupMIQuery, err := mi.NewQuery("SELECT * FROM MSCluster_ResourceGroup")
+	if err != nil {
+		return fmt.Errorf("failed to create WMI query: %w", err)
+	}
+
+	c.resourceGroupMIQuery = resourceGroupMIQuery
+
 	c.resourceGroupAutoFailbackType = prometheus.NewDesc(
 		prometheus.BuildFQName(types.Namespace, nameResourceGroup, "auto_failback_type"),
 		"Provides access to the group's AutoFailbackType property.",
@@ -142,6 +163,14 @@ func (c *Collector) buildResourceGroup() {
 		[]string{"name"},
 		nil,
 	)
+
+	var dst []msClusterResourceGroup
+
+	if err := c.miSession.Query(&dst, mi.NamespaceRootMSCluster, c.resourceGroupMIQuery); err != nil {
+		return fmt.Errorf("WMI query failed: %w", err)
+	}
+
+	return nil
 }
 
 // Collect sends the metric values for each metric
@@ -149,7 +178,7 @@ func (c *Collector) buildResourceGroup() {
 func (c *Collector) collectResourceGroup(ch chan<- prometheus.Metric, nodeNames []string) error {
 	var dst []msClusterResourceGroup
 
-	if err := c.miSession.Query(&dst, mi.NamespaceRootMSCluster, utils.Must(mi.NewQuery("SELECT * FROM MSCluster_ResourceGroup"))); err != nil {
+	if err := c.miSession.Query(&dst, mi.NamespaceRootMSCluster, c.resourceGroupMIQuery); err != nil {
 		return fmt.Errorf("WMI query failed: %w", err)
 	}
 

internal/collector/msmq/const.go

@@ -0,0 +1,23 @@
+// Copyright 2024 The Prometheus 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.
+
+//go:build windows
+
+package msmq
+
+const (
+	bytesInJournalQueue    = "Bytes in Journal Queue"
+	bytesInQueue           = "Bytes in Queue"
+	messagesInJournalQueue = "Messages in Journal Queue"
+	messagesInQueue        = "Messages in Queue"
+)