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refactor: rename namespace to 'collector'
This commit is contained in:
Martin Lindhe
265
collector/logical_disk.go
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265
collector/logical_disk.go
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// returns data points from Win32_PerfRawData_PerfDisk_LogicalDisk
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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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package collector
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import (
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"flag"
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"fmt"
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"log"
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"regexp"
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"github.com/StackExchange/wmi"
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"github.com/prometheus/client_golang/prometheus"
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)
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const (
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ticksToSecondsScaleFactor = 1 / 1e7
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)
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var (
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volumeWhitelist = flag.String("collector.logical_disk.volume-whitelist", ".+", "Regexp of volumes to whitelist. Volume name must both match whitelist and not match blacklist to be included.")
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volumeBlacklist = flag.String("collector.logical_disk.volume-blacklist", "", "Regexp of volumes to blacklist. Volume name must both match whitelist and not match blacklist to be included.")
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)
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// A LogicalDiskCollector is a Prometheus collector for WMI Win32_PerfRawData_PerfDisk_LogicalDisk metrics
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type LogicalDiskCollector struct {
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RequestsQueued *prometheus.Desc
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ReadBytesTotal *prometheus.Desc
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ReadsTotal *prometheus.Desc
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WriteBytesTotal *prometheus.Desc
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WritesTotal *prometheus.Desc
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ReadTime *prometheus.Desc
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WriteTime *prometheus.Desc
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TotalSpace *prometheus.Desc
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FreeSpace *prometheus.Desc
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IdleTime *prometheus.Desc
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SplitIOs *prometheus.Desc
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volumeWhitelistPattern *regexp.Regexp
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volumeBlacklistPattern *regexp.Regexp
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}
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// NewLogicalDiskCollector ...
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func NewLogicalDiskCollector() *LogicalDiskCollector {
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const subsystem = "logical_disk"
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return &LogicalDiskCollector{
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RequestsQueued: prometheus.NewDesc(
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prometheus.BuildFQName(wmiNamespace, subsystem, "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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ReadBytesTotal: prometheus.NewDesc(
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prometheus.BuildFQName(wmiNamespace, subsystem, "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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ReadsTotal: prometheus.NewDesc(
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prometheus.BuildFQName(wmiNamespace, subsystem, "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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WriteBytesTotal: prometheus.NewDesc(
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prometheus.BuildFQName(wmiNamespace, subsystem, "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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WritesTotal: prometheus.NewDesc(
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prometheus.BuildFQName(wmiNamespace, subsystem, "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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ReadTime: prometheus.NewDesc(
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prometheus.BuildFQName(wmiNamespace, subsystem, "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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WriteTime: prometheus.NewDesc(
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prometheus.BuildFQName(wmiNamespace, subsystem, "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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FreeSpace: prometheus.NewDesc(
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prometheus.BuildFQName(wmiNamespace, subsystem, "free_bytes"),
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"Free space in bytes (LogicalDisk.PercentFreeSpace)",
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[]string{"volume"},
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nil,
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),
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TotalSpace: prometheus.NewDesc(
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prometheus.BuildFQName(wmiNamespace, subsystem, "size_bytes"),
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"Total space in bytes (LogicalDisk.PercentFreeSpace_Base)",
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[]string{"volume"},
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nil,
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),
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IdleTime: prometheus.NewDesc(
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prometheus.BuildFQName(wmiNamespace, subsystem, "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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SplitIOs: prometheus.NewDesc(
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prometheus.BuildFQName(wmiNamespace, subsystem, "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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volumeWhitelistPattern: regexp.MustCompile(fmt.Sprintf("^(?:%s)$", *volumeWhitelist)),
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volumeBlacklistPattern: regexp.MustCompile(fmt.Sprintf("^(?:%s)$", *volumeBlacklist)),
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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 *LogicalDiskCollector) Collect(ch chan<- prometheus.Metric) {
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if desc, err := c.collect(ch); err != nil {
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log.Println("[ERROR] failed collecting logical_disk metrics:", desc, err)
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return
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}
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}
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// Describe sends the descriptors of each metric over to the provided channel.
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// The corresponding metric values are sent separately.
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func (c *LogicalDiskCollector) Describe(ch chan<- *prometheus.Desc) {
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ch <- c.RequestsQueued
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ch <- c.ReadBytesTotal
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ch <- c.ReadsTotal
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ch <- c.WriteBytesTotal
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ch <- c.WritesTotal
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ch <- c.ReadTime
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ch <- c.WriteTime
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ch <- c.FreeSpace
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ch <- c.TotalSpace
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ch <- c.IdleTime
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ch <- c.SplitIOs
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}
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type Win32_PerfRawData_PerfDisk_LogicalDisk struct {
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Name string
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CurrentDiskQueueLength uint32
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DiskReadBytesPerSec uint64
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DiskReadsPerSec uint32
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DiskWriteBytesPerSec uint64
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DiskWritesPerSec uint32
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PercentDiskReadTime uint64
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PercentDiskWriteTime uint64
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PercentFreeSpace uint32
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PercentFreeSpace_Base uint32
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PercentIdleTime uint64
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SplitIOPerSec uint32
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}
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func (c *LogicalDiskCollector) collect(ch chan<- prometheus.Metric) (*prometheus.Desc, error) {
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var dst []Win32_PerfRawData_PerfDisk_LogicalDisk
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q := wmi.CreateQuery(&dst, "")
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if err := wmi.Query(q, &dst); err != nil {
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return nil, err
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}
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for _, volume := range dst {
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if volume.Name == "_Total" ||
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c.volumeBlacklistPattern.MatchString(volume.Name) ||
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!c.volumeWhitelistPattern.MatchString(volume.Name) {
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continue
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}
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ch <- prometheus.MustNewConstMetric(
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c.RequestsQueued,
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prometheus.GaugeValue,
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float64(volume.CurrentDiskQueueLength),
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volume.Name,
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)
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ch <- prometheus.MustNewConstMetric(
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c.ReadBytesTotal,
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prometheus.CounterValue,
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float64(volume.DiskReadBytesPerSec),
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volume.Name,
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)
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ch <- prometheus.MustNewConstMetric(
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c.ReadsTotal,
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prometheus.CounterValue,
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float64(volume.DiskReadsPerSec),
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volume.Name,
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)
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ch <- prometheus.MustNewConstMetric(
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c.WriteBytesTotal,
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prometheus.CounterValue,
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float64(volume.DiskWriteBytesPerSec),
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volume.Name,
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)
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ch <- prometheus.MustNewConstMetric(
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c.WritesTotal,
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prometheus.CounterValue,
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float64(volume.DiskWritesPerSec),
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volume.Name,
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)
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ch <- prometheus.MustNewConstMetric(
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c.ReadTime,
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prometheus.CounterValue,
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float64(volume.PercentDiskReadTime)*ticksToSecondsScaleFactor,
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volume.Name,
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)
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ch <- prometheus.MustNewConstMetric(
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c.WriteTime,
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prometheus.CounterValue,
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float64(volume.PercentDiskWriteTime)*ticksToSecondsScaleFactor,
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volume.Name,
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)
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ch <- prometheus.MustNewConstMetric(
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c.FreeSpace,
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prometheus.GaugeValue,
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float64(volume.PercentFreeSpace)*1024*1024,
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volume.Name,
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)
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ch <- prometheus.MustNewConstMetric(
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c.TotalSpace,
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prometheus.GaugeValue,
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float64(volume.PercentFreeSpace_Base)*1024*1024,
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volume.Name,
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)
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ch <- prometheus.MustNewConstMetric(
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c.IdleTime,
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prometheus.CounterValue,
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float64(volume.PercentIdleTime)*ticksToSecondsScaleFactor,
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volume.Name,
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)
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ch <- prometheus.MustNewConstMetric(
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c.SplitIOs,
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prometheus.CounterValue,
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float64(volume.SplitIOPerSec),
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volume.Name,
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)
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}
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return nil, nil
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}
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