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Replace the CS collector with native WinAPI calls to sysinfoapi

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Signed-off-by: Ben Ridley <benridley29@gmail.com>
This commit is contained in:
Ben Ridley
2020-12-18 18:02:33 +11:00
committed by Ben Ridley
parent 18495abb69
commit 71054ac429
3 changed files with 155 additions and 28 deletions
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48
collector/cs.go
View File

@@ -3,10 +3,8 @@
package collector
import (
"errors"
"github.com/StackExchange/wmi"
"github.com/prometheus-community/windows_exporter/log"
"github.com/prometheus-community/windows_exporter/sysinfoapi"
"github.com/prometheus/client_golang/prometheus"
)
@@ -60,51 +58,45 @@ func (c *CSCollector) Collect(ctx *ScrapeContext, ch chan<- prometheus.Metric) e
return nil
}
// Win32_ComputerSystem docs:
// - https://msdn.microsoft.com/en-us/library/aa394102
type Win32_ComputerSystem struct {
NumberOfLogicalProcessors uint32
TotalPhysicalMemory uint64
DNSHostname string
Domain string
Workgroup *string
}
func (c *CSCollector) collect(ch chan<- prometheus.Metric) (*prometheus.Desc, error) {
var dst []Win32_ComputerSystem
q := queryAll(&dst)
if err := wmi.Query(q, &dst); err != nil {
cs := sysinfoapi.GetNumLogicalProcessors()
pm, err := sysinfoapi.GetPhysicalMemory()
if err != nil {
return nil, err
}
if len(dst) == 0 {
return nil, errors.New("WMI query returned empty result set")
}
ch <- prometheus.MustNewConstMetric(
c.LogicalProcessors,
prometheus.GaugeValue,
float64(dst[0].NumberOfLogicalProcessors),
float64(cs),
)
ch <- prometheus.MustNewConstMetric(
c.PhysicalMemoryBytes,
prometheus.GaugeValue,
float64(dst[0].TotalPhysicalMemory),
float64(pm),
)
var fqdn string
if dst[0].Workgroup == nil || dst[0].Domain != *dst[0].Workgroup {
fqdn = dst[0].DNSHostname + "." + dst[0].Domain
} else {
fqdn = dst[0].DNSHostname
hostname, err := sysinfoapi.GetComputerName(sysinfoapi.ComputerNameDNSHostname)
if err != nil {
return nil, err
}
domain, err := sysinfoapi.GetComputerName(sysinfoapi.ComputerNameDNSDomain)
if err != nil {
return nil, err
}
fqdn, err := sysinfoapi.GetComputerName(sysinfoapi.ComputerNameDNSFullyQualified)
if err != nil {
return nil, err
}
ch <- prometheus.MustNewConstMetric(
c.Hostname,
prometheus.GaugeValue,
1.0,
dst[0].DNSHostname,
dst[0].Domain,
hostname,
domain,
fqdn,
)