mirror of
https://github.com/prometheus-community/windows_exporter
synced 2024-12-28 09:22:06 +00:00
131 lines
3.6 KiB
Go
131 lines
3.6 KiB
Go
// returns data points from Win32_PerfRawData_PerfOS_System class
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// https://web.archive.org/web/20050830140516/http://msdn.microsoft.com/library/en-us/wmisdk/wmi/win32_perfrawdata_perfos_system.asp
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package collector
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import (
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"log"
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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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func init() {
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Factories["system"] = NewSystemCollector
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}
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// A SystemCollector is a Prometheus collector for WMI metrics
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type SystemCollector struct {
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ContextSwitchesTotal *prometheus.Desc
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ExceptionDispatchesTotal *prometheus.Desc
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ProcessorQueueLength *prometheus.Desc
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SystemCallsTotal *prometheus.Desc
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SystemUpTime *prometheus.Desc
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Threads *prometheus.Desc
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}
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// NewSystemCollector ...
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func NewSystemCollector() (Collector, error) {
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const subsystem = "system"
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return &SystemCollector{
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ContextSwitchesTotal: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "context_switches_total"),
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"PerfOS_System.ContextSwitchesPersec",
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nil,
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nil,
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),
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ExceptionDispatchesTotal: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "exception_dispatches_total"),
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"PerfOS_System.ExceptionDispatchesPersec",
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nil,
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nil,
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),
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ProcessorQueueLength: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "processor_queue_length"),
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"PerfOS_System.ProcessorQueueLength",
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nil,
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nil,
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),
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SystemCallsTotal: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "system_calls_total"),
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"PerfOS_System.SystemCallsPersec",
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nil,
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nil,
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),
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SystemUpTime: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "system_up_time"),
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"SystemUpTime/Frequency_Object",
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nil,
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nil,
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),
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Threads: prometheus.NewDesc(
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prometheus.BuildFQName(Namespace, subsystem, "threads"),
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"PerfOS_System.Threads",
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nil,
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nil,
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),
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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 *SystemCollector) Collect(ch chan<- prometheus.Metric) error {
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if desc, err := c.collect(ch); err != nil {
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log.Println("[ERROR] failed collecting system 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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type Win32_PerfRawData_PerfOS_System struct {
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ContextSwitchesPersec uint32
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ExceptionDispatchesPersec uint32
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Frequency_Object uint64
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ProcessorQueueLength uint32
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SystemCallsPersec uint32
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SystemUpTime uint64
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Threads uint32
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Timestamp_Object uint64
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}
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func (c *SystemCollector) collect(ch chan<- prometheus.Metric) (*prometheus.Desc, error) {
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var dst []Win32_PerfRawData_PerfOS_System
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if err := wmi.Query(wmi.CreateQuery(&dst, ""), &dst); err != nil {
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return nil, err
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}
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ch <- prometheus.MustNewConstMetric(
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c.ContextSwitchesTotal,
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prometheus.GaugeValue,
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float64(dst[0].ContextSwitchesPersec),
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)
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ch <- prometheus.MustNewConstMetric(
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c.ExceptionDispatchesTotal,
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prometheus.GaugeValue,
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float64(dst[0].ExceptionDispatchesPersec),
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)
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ch <- prometheus.MustNewConstMetric(
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c.ProcessorQueueLength,
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prometheus.GaugeValue,
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float64(dst[0].ProcessorQueueLength),
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)
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ch <- prometheus.MustNewConstMetric(
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c.SystemCallsTotal,
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prometheus.GaugeValue,
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float64(dst[0].SystemCallsPersec),
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)
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ch <- prometheus.MustNewConstMetric(
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c.SystemUpTime,
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prometheus.GaugeValue,
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// convert from Windows timestamp (1 jan 1601) to unix timestamp (1 jan 1970)
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float64(dst[0].SystemUpTime-116444736000000000)/float64(dst[0].Frequency_Object),
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)
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ch <- prometheus.MustNewConstMetric(
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c.Threads,
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prometheus.GaugeValue,
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float64(dst[0].Threads),
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)
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return nil, nil
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}
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