mirror of
https://github.com/prometheus-community/windows_exporter.git
synced 2026-03-07 02:56:35 +00:00
chore: Move private packages to internal (#1664)
This commit is contained in:
Jan-Otto Kröpke
565
internal/collector/logical_disk/logical_disk.go
Normal file
565
internal/collector/logical_disk/logical_disk.go
Normal file
@@ -0,0 +1,565 @@
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//go:build windows
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package logical_disk
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import (
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"encoding/binary"
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"fmt"
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"log/slog"
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"regexp"
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"slices"
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"strconv"
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"strings"
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"github.com/alecthomas/kingpin/v2"
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"github.com/prometheus-community/windows_exporter/internal/perflib"
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types2 "github.com/prometheus-community/windows_exporter/internal/types"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/yusufpapurcu/wmi"
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"golang.org/x/sys/windows"
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)
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const Name = "logical_disk"
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type Config struct {
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VolumeInclude *regexp.Regexp `yaml:"volume_include"`
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VolumeExclude *regexp.Regexp `yaml:"volume_exclude"`
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}
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var ConfigDefaults = Config{
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VolumeInclude: types2.RegExpAny,
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VolumeExclude: types2.RegExpEmpty,
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}
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// A Collector is a Prometheus Collector for perflib logicalDisk metrics.
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type Collector struct {
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config Config
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avgReadQueue *prometheus.Desc
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avgWriteQueue *prometheus.Desc
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freeSpace *prometheus.Desc
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idleTime *prometheus.Desc
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information *prometheus.Desc
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readBytesTotal *prometheus.Desc
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readLatency *prometheus.Desc
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readOnly *prometheus.Desc
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readsTotal *prometheus.Desc
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readTime *prometheus.Desc
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readWriteLatency *prometheus.Desc
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requestsQueued *prometheus.Desc
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splitIOs *prometheus.Desc
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totalSpace *prometheus.Desc
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writeBytesTotal *prometheus.Desc
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writeLatency *prometheus.Desc
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writesTotal *prometheus.Desc
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writeTime *prometheus.Desc
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}
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type volumeInfo struct {
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filesystem string
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serialNumber string
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label string
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volumeType string
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readonly float64
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}
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func New(config *Config) *Collector {
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if config == nil {
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config = &ConfigDefaults
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}
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if config.VolumeExclude == nil {
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config.VolumeExclude = ConfigDefaults.VolumeExclude
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}
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if config.VolumeInclude == nil {
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config.VolumeInclude = ConfigDefaults.VolumeInclude
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}
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c := &Collector{
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config: *config,
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}
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return c
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}
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func NewWithFlags(app *kingpin.Application) *Collector {
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c := &Collector{
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config: ConfigDefaults,
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}
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var volumeExclude, volumeInclude string
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app.Flag(
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"collector.logical_disk.volume-exclude",
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"Regexp of volumes to exclude. Volume name must both match include and not match exclude to be included.",
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).Default(c.config.VolumeExclude.String()).StringVar(&volumeExclude)
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app.Flag(
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"collector.logical_disk.volume-include",
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"Regexp of volumes to include. Volume name must both match include and not match exclude to be included.",
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).Default(c.config.VolumeInclude.String()).StringVar(&volumeInclude)
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app.Action(func(*kingpin.ParseContext) error {
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var err error
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c.config.VolumeExclude, err = regexp.Compile(fmt.Sprintf("^(?:%s)$", volumeExclude))
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if err != nil {
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return fmt.Errorf("collector.logical_disk.volume-exclude: %w", err)
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}
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c.config.VolumeInclude, err = regexp.Compile(fmt.Sprintf("^(?:%s)$", volumeInclude))
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if err != nil {
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return fmt.Errorf("collector.logical_disk.volume-include: %w", err)
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}
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return nil
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})
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return c
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}
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func (c *Collector) GetName() string {
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return Name
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}
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func (c *Collector) GetPerfCounter(_ *slog.Logger) ([]string, error) {
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return []string{"LogicalDisk"}, nil
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}
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func (c *Collector) Close(_ *slog.Logger) error {
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return nil
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}
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func (c *Collector) Build(_ *slog.Logger, _ *wmi.Client) error {
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c.information = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "info"),
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"A metric with a constant '1' value labeled with logical disk information",
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[]string{"disk", "type", "volume", "volume_name", "filesystem", "serial_number"},
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nil,
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)
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c.readOnly = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "readonly"),
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"Whether the logical disk is read-only",
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[]string{"volume"},
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nil,
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)
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c.requestsQueued = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "requests_queued"),
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"The number of requests queued to the disk (LogicalDisk.CurrentDiskQueueLength)",
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[]string{"volume"},
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nil,
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)
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c.avgReadQueue = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "avg_read_requests_queued"),
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"Average number of read requests that were queued for the selected disk during the sample interval (LogicalDisk.AvgDiskReadQueueLength)",
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[]string{"volume"},
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nil,
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)
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c.avgWriteQueue = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "avg_write_requests_queued"),
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"Average number of write requests that were queued for the selected disk during the sample interval (LogicalDisk.AvgDiskWriteQueueLength)",
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[]string{"volume"},
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nil,
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)
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c.readBytesTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "read_bytes_total"),
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"The number of bytes transferred from the disk during read operations (LogicalDisk.DiskReadBytesPerSec)",
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[]string{"volume"},
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nil,
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)
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c.readsTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "reads_total"),
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"The number of read operations on the disk (LogicalDisk.DiskReadsPerSec)",
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[]string{"volume"},
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nil,
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)
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c.writeBytesTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "write_bytes_total"),
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"The number of bytes transferred to the disk during write operations (LogicalDisk.DiskWriteBytesPerSec)",
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[]string{"volume"},
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nil,
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)
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c.writesTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "writes_total"),
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"The number of write operations on the disk (LogicalDisk.DiskWritesPerSec)",
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[]string{"volume"},
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nil,
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)
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c.readTime = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "read_seconds_total"),
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"Seconds that the disk was busy servicing read requests (LogicalDisk.PercentDiskReadTime)",
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[]string{"volume"},
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nil,
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)
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c.writeTime = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "write_seconds_total"),
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"Seconds that the disk was busy servicing write requests (LogicalDisk.PercentDiskWriteTime)",
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[]string{"volume"},
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nil,
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)
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c.freeSpace = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "free_bytes"),
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"Free space in bytes, updates every 10-15 min (LogicalDisk.PercentFreeSpace)",
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[]string{"volume"},
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nil,
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)
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c.totalSpace = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "size_bytes"),
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"Total space in bytes, updates every 10-15 min (LogicalDisk.PercentFreeSpace_Base)",
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[]string{"volume"},
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nil,
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)
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c.idleTime = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "idle_seconds_total"),
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"Seconds that the disk was idle (LogicalDisk.PercentIdleTime)",
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[]string{"volume"},
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nil,
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)
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c.splitIOs = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "split_ios_total"),
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"The number of I/Os to the disk were split into multiple I/Os (LogicalDisk.SplitIOPerSec)",
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[]string{"volume"},
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nil,
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)
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c.readLatency = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "read_latency_seconds_total"),
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"Shows the average time, in seconds, of a read operation from the disk (LogicalDisk.AvgDiskSecPerRead)",
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[]string{"volume"},
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||||
nil,
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)
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||||
c.writeLatency = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "write_latency_seconds_total"),
|
||||
"Shows the average time, in seconds, of a write operation to the disk (LogicalDisk.AvgDiskSecPerWrite)",
|
||||
[]string{"volume"},
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||||
nil,
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||||
)
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c.readWriteLatency = prometheus.NewDesc(
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prometheus.BuildFQName(types2.Namespace, Name, "read_write_latency_seconds_total"),
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"Shows the time, in seconds, of the average disk transfer (LogicalDisk.AvgDiskSecPerTransfer)",
|
||||
[]string{"volume"},
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nil,
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)
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return nil
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}
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||||
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// Collect sends the metric values for each metric
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||||
// to the provided prometheus Metric channel.
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||||
func (c *Collector) Collect(ctx *types2.ScrapeContext, logger *slog.Logger, ch chan<- prometheus.Metric) error {
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logger = logger.With(slog.String("collector", Name))
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if err := c.collect(ctx, logger, ch); err != nil {
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logger.Error("failed collecting logical_disk metrics",
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slog.Any("err", err),
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)
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||||
|
||||
return err
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}
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return nil
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}
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// Win32_PerfRawData_PerfDisk_LogicalDisk docs:
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// - https://msdn.microsoft.com/en-us/windows/hardware/aa394307(v=vs.71) - Win32_PerfRawData_PerfDisk_LogicalDisk class
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// - https://msdn.microsoft.com/en-us/library/ms803973.aspx - LogicalDisk object reference.
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type logicalDisk struct {
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Name string
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CurrentDiskQueueLength float64 `perflib:"Current Disk Queue Length"`
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AvgDiskReadQueueLength float64 `perflib:"Avg. Disk Read Queue Length"`
|
||||
AvgDiskWriteQueueLength float64 `perflib:"Avg. Disk Write Queue Length"`
|
||||
DiskReadBytesPerSec float64 `perflib:"Disk Read Bytes/sec"`
|
||||
DiskReadsPerSec float64 `perflib:"Disk Reads/sec"`
|
||||
DiskWriteBytesPerSec float64 `perflib:"Disk Write Bytes/sec"`
|
||||
DiskWritesPerSec float64 `perflib:"Disk Writes/sec"`
|
||||
PercentDiskReadTime float64 `perflib:"% Disk Read Time"`
|
||||
PercentDiskWriteTime float64 `perflib:"% Disk Write Time"`
|
||||
PercentFreeSpace float64 `perflib:"% Free Space_Base"`
|
||||
PercentFreeSpace_Base float64 `perflib:"Free Megabytes"`
|
||||
PercentIdleTime float64 `perflib:"% Idle Time"`
|
||||
SplitIOPerSec float64 `perflib:"Split IO/Sec"`
|
||||
AvgDiskSecPerRead float64 `perflib:"Avg. Disk sec/Read"`
|
||||
AvgDiskSecPerWrite float64 `perflib:"Avg. Disk sec/Write"`
|
||||
AvgDiskSecPerTransfer float64 `perflib:"Avg. Disk sec/Transfer"`
|
||||
}
|
||||
|
||||
func (c *Collector) collect(ctx *types2.ScrapeContext, logger *slog.Logger, ch chan<- prometheus.Metric) error {
|
||||
logger = logger.With(slog.String("collector", Name))
|
||||
|
||||
var (
|
||||
err error
|
||||
diskID string
|
||||
info volumeInfo
|
||||
dst []logicalDisk
|
||||
)
|
||||
|
||||
if err = perflib.UnmarshalObject(ctx.PerfObjects["LogicalDisk"], &dst, logger); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
for _, volume := range dst {
|
||||
if volume.Name == "_Total" ||
|
||||
c.config.VolumeExclude.MatchString(volume.Name) ||
|
||||
!c.config.VolumeInclude.MatchString(volume.Name) {
|
||||
continue
|
||||
}
|
||||
|
||||
diskID, err = getDiskIDByVolume(volume.Name)
|
||||
if err != nil {
|
||||
logger.Warn("failed to get disk ID for "+volume.Name,
|
||||
slog.Any("err", err),
|
||||
)
|
||||
}
|
||||
|
||||
info, err = getVolumeInfo(volume.Name)
|
||||
if err != nil {
|
||||
logger.Warn("failed to get volume information for %s"+volume.Name,
|
||||
slog.Any("err", err),
|
||||
)
|
||||
}
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.information,
|
||||
prometheus.GaugeValue,
|
||||
1,
|
||||
diskID,
|
||||
info.volumeType,
|
||||
volume.Name,
|
||||
info.label,
|
||||
info.filesystem,
|
||||
info.serialNumber,
|
||||
)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.requestsQueued,
|
||||
prometheus.GaugeValue,
|
||||
volume.CurrentDiskQueueLength,
|
||||
volume.Name,
|
||||
)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.avgReadQueue,
|
||||
prometheus.GaugeValue,
|
||||
volume.AvgDiskReadQueueLength*perflib.TicksToSecondScaleFactor,
|
||||
volume.Name,
|
||||
)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.avgWriteQueue,
|
||||
prometheus.GaugeValue,
|
||||
volume.AvgDiskWriteQueueLength*perflib.TicksToSecondScaleFactor,
|
||||
volume.Name,
|
||||
)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.readBytesTotal,
|
||||
prometheus.CounterValue,
|
||||
volume.DiskReadBytesPerSec,
|
||||
volume.Name,
|
||||
)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.readsTotal,
|
||||
prometheus.CounterValue,
|
||||
volume.DiskReadsPerSec,
|
||||
volume.Name,
|
||||
)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.writeBytesTotal,
|
||||
prometheus.CounterValue,
|
||||
volume.DiskWriteBytesPerSec,
|
||||
volume.Name,
|
||||
)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.writesTotal,
|
||||
prometheus.CounterValue,
|
||||
volume.DiskWritesPerSec,
|
||||
volume.Name,
|
||||
)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.readTime,
|
||||
prometheus.CounterValue,
|
||||
volume.PercentDiskReadTime,
|
||||
volume.Name,
|
||||
)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.writeTime,
|
||||
prometheus.CounterValue,
|
||||
volume.PercentDiskWriteTime,
|
||||
volume.Name,
|
||||
)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.freeSpace,
|
||||
prometheus.GaugeValue,
|
||||
volume.PercentFreeSpace_Base*1024*1024,
|
||||
volume.Name,
|
||||
)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.totalSpace,
|
||||
prometheus.GaugeValue,
|
||||
volume.PercentFreeSpace*1024*1024,
|
||||
volume.Name,
|
||||
)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.idleTime,
|
||||
prometheus.CounterValue,
|
||||
volume.PercentIdleTime,
|
||||
volume.Name,
|
||||
)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.splitIOs,
|
||||
prometheus.CounterValue,
|
||||
volume.SplitIOPerSec,
|
||||
volume.Name,
|
||||
)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.readLatency,
|
||||
prometheus.CounterValue,
|
||||
volume.AvgDiskSecPerRead*perflib.TicksToSecondScaleFactor,
|
||||
volume.Name,
|
||||
)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.writeLatency,
|
||||
prometheus.CounterValue,
|
||||
volume.AvgDiskSecPerWrite*perflib.TicksToSecondScaleFactor,
|
||||
volume.Name,
|
||||
)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(
|
||||
c.readWriteLatency,
|
||||
prometheus.CounterValue,
|
||||
volume.AvgDiskSecPerTransfer*perflib.TicksToSecondScaleFactor,
|
||||
volume.Name,
|
||||
)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func getDriveType(driveType uint32) string {
|
||||
switch driveType {
|
||||
case windows.DRIVE_UNKNOWN:
|
||||
return "unknown"
|
||||
case windows.DRIVE_NO_ROOT_DIR:
|
||||
return "norootdir"
|
||||
case windows.DRIVE_REMOVABLE:
|
||||
return "removable"
|
||||
case windows.DRIVE_FIXED:
|
||||
return "fixed"
|
||||
case windows.DRIVE_REMOTE:
|
||||
return "remote"
|
||||
case windows.DRIVE_CDROM:
|
||||
return "cdrom"
|
||||
case windows.DRIVE_RAMDISK:
|
||||
return "ramdisk"
|
||||
default:
|
||||
return "unknown"
|
||||
}
|
||||
}
|
||||
|
||||
// diskExtentSize Size of the DiskExtent structure in bytes.
|
||||
const diskExtentSize = 24
|
||||
|
||||
// getDiskIDByVolume returns the disk ID for a given volume.
|
||||
func getDiskIDByVolume(rootDrive string) (string, error) {
|
||||
// Open a volume handle to the Disk Root.
|
||||
var err error
|
||||
|
||||
var f windows.Handle
|
||||
|
||||
// mode has to include FILE_SHARE permission to allow concurrent access to the disk.
|
||||
// use 0 as access mode to avoid admin permission.
|
||||
mode := uint32(windows.FILE_SHARE_READ | windows.FILE_SHARE_WRITE | windows.FILE_SHARE_DELETE)
|
||||
|
||||
f, err = windows.CreateFile(
|
||||
windows.StringToUTF16Ptr(`\\.\`+rootDrive),
|
||||
0, mode, nil, windows.OPEN_EXISTING, uint32(windows.FILE_ATTRIBUTE_READONLY), 0)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
defer windows.Close(f)
|
||||
|
||||
controlCode := uint32(5636096) // IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS
|
||||
volumeDiskExtents := make([]byte, 16*1024)
|
||||
|
||||
var bytesReturned uint32
|
||||
|
||||
err = windows.DeviceIoControl(f, controlCode, nil, 0, &volumeDiskExtents[0], uint32(len(volumeDiskExtents)), &bytesReturned, nil)
|
||||
if err != nil {
|
||||
return "", fmt.Errorf("could not identify physical drive for %s: %w", rootDrive, err)
|
||||
}
|
||||
|
||||
numDiskIDs := uint(binary.LittleEndian.Uint32(volumeDiskExtents))
|
||||
if numDiskIDs < 1 {
|
||||
return "", fmt.Errorf("could not identify physical drive for %s: no disk IDs returned", rootDrive)
|
||||
}
|
||||
|
||||
diskIDs := make([]string, numDiskIDs)
|
||||
|
||||
for i := range numDiskIDs {
|
||||
diskIDs[i] = strconv.FormatUint(uint64(binary.LittleEndian.Uint32(volumeDiskExtents[8+i*diskExtentSize:])), 10)
|
||||
}
|
||||
|
||||
slices.Sort(diskIDs)
|
||||
diskIDs = slices.Compact(diskIDs)
|
||||
|
||||
return strings.Join(diskIDs, ";"), nil
|
||||
}
|
||||
|
||||
func getVolumeInfo(rootDrive string) (volumeInfo, error) {
|
||||
if !strings.HasSuffix(rootDrive, ":") {
|
||||
return volumeInfo{}, nil
|
||||
}
|
||||
|
||||
volPath := windows.StringToUTF16Ptr(rootDrive + `\`)
|
||||
|
||||
volBufLabel := make([]uint16, windows.MAX_PATH+1)
|
||||
volSerialNum := uint32(0)
|
||||
fsFlags := uint32(0)
|
||||
volBufType := make([]uint16, windows.MAX_PATH+1)
|
||||
|
||||
driveType := windows.GetDriveType(volPath)
|
||||
|
||||
err := windows.GetVolumeInformation(volPath, &volBufLabel[0], uint32(len(volBufLabel)),
|
||||
&volSerialNum, nil, &fsFlags, &volBufType[0], uint32(len(volBufType)))
|
||||
if err != nil {
|
||||
if driveType != windows.DRIVE_CDROM && driveType != windows.DRIVE_REMOVABLE {
|
||||
return volumeInfo{}, err
|
||||
}
|
||||
|
||||
return volumeInfo{}, nil
|
||||
}
|
||||
|
||||
return volumeInfo{
|
||||
volumeType: getDriveType(driveType),
|
||||
label: windows.UTF16PtrToString(&volBufLabel[0]),
|
||||
filesystem: windows.UTF16PtrToString(&volBufType[0]),
|
||||
serialNumber: fmt.Sprintf("%X", volSerialNum),
|
||||
readonly: float64(fsFlags & windows.FILE_READ_ONLY_VOLUME),
|
||||
}, nil
|
||||
}
|
||||
16
internal/collector/logical_disk/logical_disk_test.go
Normal file
16
internal/collector/logical_disk/logical_disk_test.go
Normal file
@@ -0,0 +1,16 @@
|
||||
package logical_disk_test
|
||||
|
||||
import (
|
||||
"testing"
|
||||
|
||||
"github.com/alecthomas/kingpin/v2"
|
||||
"github.com/prometheus-community/windows_exporter/internal/collector/logical_disk"
|
||||
"github.com/prometheus-community/windows_exporter/internal/testutils"
|
||||
)
|
||||
|
||||
func BenchmarkCollector(b *testing.B) {
|
||||
// Whitelist is not set in testing context (kingpin flags not parsed), causing the Collector to skip all disks.
|
||||
localVolumeInclude := ".+"
|
||||
kingpin.CommandLine.GetArg("collector.logical_disk.volume-include").StringVar(&localVolumeInclude)
|
||||
testutils.FuncBenchmarkCollector(b, "logical_disk", logical_disk.NewWithFlags)
|
||||
}
|
||||
Reference in New Issue
Block a user