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terminal_services: detect Connection Broker via service control manager (#2628)

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Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>
This commit is contained in:
Jan-Otto Kröpke
2026-10-09 15:31:17 +02:00
committed by GitHub
co-authored by Claude Opus 5.5
parent 2eab68993c
commit af78c3cbfd
2 changed files with 20 additions and 21 deletions
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docs/collector.terminal_services.md
+1 -1
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@@ -7,7 +7,7 @@ The terminal_services collector exposes terminal services (Remote Desktop Servic
| __Metric name prefix__ | `terminal_services` |
| __Data source__ | Perflib/WMI, Win32 |
| __Classes__ | [`Win32_PerfRawData_LocalSessionManager_TerminalServices`](https://wutils.com/wmi/root/cimv2/win32_perfrawdata_localsessionmanager_terminalservices/), [`Win32_PerfRawData_TermService_TerminalServicesSession`](https://docs.microsoft.com/en-us/previous-versions/aa394344(v%3Dvs.85)), [`Win32_PerfRawData_RemoteDesktopConnectionBrokerPerformanceCounterProvider_RemoteDesktopConnectionBrokerCounterset`](https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/mt729067(v%3Dws.11)) |
| __Win32 API__ | [WTSEnumerateSessionsEx](https://learn.microsoft.com/en-us/windows/win32/api/wtsapi32/nf-wtsapi32-wtsenumeratesessionsexw) |
| __Win32 API__ | [WTSEnumerateSessionsEx](https://learn.microsoft.com/en-us/windows/win32/api/wtsapi32/nf-wtsapi32-wtsenumeratesessionsexw), [OpenService](https://learn.microsoft.com/en-us/windows/win32/api/winsvc/nf-winsvc-openservicew) |
| __Enabled by default?__ | No |
## Flags
internal/collector/terminal_services/terminal_services.go
+19 -20
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@@ -30,14 +30,16 @@ import (
"github.com/prometheus-community/windows_exporter/internal/mi"
"github.com/prometheus-community/windows_exporter/internal/pdh"
"github.com/prometheus-community/windows_exporter/internal/types"
"github.com/prometheus-community/windows_exporter/internal/utils"
"github.com/prometheus/client_golang/prometheus"
"golang.org/x/sys/windows"
)
const (
Name = "terminal_services"
ConnectionBrokerFeatureID uint32 = 133
Name = "terminal_services"
// connectionBrokerServiceName is the "Remote Desktop Connection Broker"
// service, installed by the RDS-Connection-Broker role.
connectionBrokerServiceName = "Tssdis"
)
type Config struct{}
@@ -45,23 +47,24 @@ type Config struct{}
//nolint:gochecknoglobals
var ConfigDefaults = Config{}
type Win32_ServerFeature struct {
ID uint32
}
func isConnectionBrokerServer(miSession *mi.Session) bool {
var dst []Win32_ServerFeature
if err := miSession.Query(&dst, mi.NamespaceRootCIMv2, utils.Must(mi.NewQuery("SELECT * FROM Win32_ServerFeature")), 0); err != nil {
// isConnectionBrokerServer reports whether the Remote Desktop Connection Broker
// role is installed by looking up its service in the service control manager.
func isConnectionBrokerServer() bool {
scm, err := windows.OpenSCManager(nil, nil, windows.SC_MANAGER_CONNECT)
if err != nil {
return false
}
for _, d := range dst {
if d.ID == ConnectionBrokerFeatureID {
return true
}
defer windows.CloseServiceHandle(scm) //nolint:errcheck
service, err := windows.OpenService(scm, windows.StringToUTF16Ptr(connectionBrokerServiceName), windows.SERVICE_QUERY_STATUS)
if err != nil {
return false
}
return false
_ = windows.CloseServiceHandle(service)
return true
}
// A Collector is a Prometheus Collector for WMI
@@ -233,13 +236,9 @@ func (c *Collector) Build(logger *slog.Logger, miSession *mi.Session) error {
nil,
)
if miSession == nil {
return errors.New("miSession is nil")
}
var err error
c.connectionBrokerEnabled = isConnectionBrokerServer(miSession)
c.connectionBrokerEnabled = isConnectionBrokerServer()
if c.connectionBrokerEnabled {
c.perfDataCollectorBroker, err = pdh.NewCollector[perfDataCounterValuesBroker](c.logger, pdh.CounterTypeRaw, "Remote Desktop Connection Broker Counterset", pdh.InstancesAll)