303 lines
8.8 KiB
Go
303 lines
8.8 KiB
Go
// +build windows
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package collector
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import (
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"fmt"
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"regexp"
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"github.com/prometheus-community/windows_exporter/log"
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"github.com/prometheus/client_golang/prometheus"
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"gopkg.in/alecthomas/kingpin.v2"
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)
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func init() {
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registerCollector("logical_disk", NewLogicalDiskCollector, "LogicalDisk")
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}
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var (
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volumeWhitelist = kingpin.Flag(
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"collector.logical_disk.volume-whitelist",
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"Regexp of volumes to whitelist. Volume name must both match whitelist and not match blacklist to be included.",
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).Default(".+").String()
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volumeBlacklist = kingpin.Flag(
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"collector.logical_disk.volume-blacklist",
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"Regexp of volumes to blacklist. Volume name must both match whitelist and not match blacklist to be included.",
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).Default("").String()
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)
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// A LogicalDiskCollector is a Prometheus collector for perflib 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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ReadLatency *prometheus.Desc
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WriteLatency *prometheus.Desc
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ReadWriteLatency *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() (Collector, error) {
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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(Namespace, 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(Namespace, 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(Namespace, 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(Namespace, 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(Namespace, 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(Namespace, 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(Namespace, 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(Namespace, 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(Namespace, 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(Namespace, 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(Namespace, 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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ReadLatency: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "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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WriteLatency: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "write_latency_seconds_total"),
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"Shows the average time, in seconds, of a write operation to the disk (LogicalDisk.AvgDiskSecPerWrite)",
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[]string{"volume"},
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nil,
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),
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ReadWriteLatency: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "read_write_latency_seconds_total"),
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"Shows the time, in seconds, of the average disk transfer (LogicalDisk.AvgDiskSecPerTransfer)",
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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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}, nil
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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(ctx *ScrapeContext, ch chan<- prometheus.Metric) error {
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if desc, err := c.collect(ctx, ch); err != nil {
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log.Error("failed collecting logical_disk metrics:", desc, err)
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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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DiskReadBytesPerSec float64 `perflib:"Disk Read Bytes/sec"`
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DiskReadsPerSec float64 `perflib:"Disk Reads/sec"`
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DiskWriteBytesPerSec float64 `perflib:"Disk Write Bytes/sec"`
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DiskWritesPerSec float64 `perflib:"Disk Writes/sec"`
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PercentDiskReadTime float64 `perflib:"% Disk Read Time"`
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PercentDiskWriteTime float64 `perflib:"% Disk Write Time"`
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PercentFreeSpace float64 `perflib:"% Free Space_Base"`
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PercentFreeSpace_Base float64 `perflib:"Free Megabytes"`
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PercentIdleTime float64 `perflib:"% Idle Time"`
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SplitIOPerSec float64 `perflib:"Split IO/Sec"`
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AvgDiskSecPerRead float64 `perflib:"Avg. Disk sec/Read"`
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AvgDiskSecPerWrite float64 `perflib:"Avg. Disk sec/Write"`
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AvgDiskSecPerTransfer float64 `perflib:"Avg. Disk sec/Transfer"`
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}
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func (c *LogicalDiskCollector) collect(ctx *ScrapeContext, ch chan<- prometheus.Metric) (*prometheus.Desc, error) {
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var dst []logicalDisk
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if err := unmarshalObject(ctx.perfObjects["LogicalDisk"], &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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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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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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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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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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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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volume.PercentDiskReadTime,
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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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volume.PercentDiskWriteTime,
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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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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.TotalSpace,
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prometheus.GaugeValue,
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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.IdleTime,
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prometheus.CounterValue,
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volume.PercentIdleTime,
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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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volume.SplitIOPerSec,
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volume.Name,
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)
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ch <- prometheus.MustNewConstMetric(
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c.ReadLatency,
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prometheus.CounterValue,
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volume.AvgDiskSecPerRead*ticksToSecondsScaleFactor,
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volume.Name,
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)
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ch <- prometheus.MustNewConstMetric(
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c.WriteLatency,
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prometheus.CounterValue,
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volume.AvgDiskSecPerWrite*ticksToSecondsScaleFactor,
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volume.Name,
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)
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ch <- prometheus.MustNewConstMetric(
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c.ReadWriteLatency,
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prometheus.CounterValue,
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volume.AvgDiskSecPerTransfer*ticksToSecondsScaleFactor,
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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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