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fix: log to the Windows temp directory if of service detection failures. (#1890)

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This commit is contained in:
Jan-Otto Kröpke
2025-02-28 01:35:41 +01:00
committed by GitHub
parent 228164765b
commit a73a08d704
1 changed files with 12 additions and 5 deletions
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17
cmd/windows_exporter/0_service.go
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@@ -56,8 +56,7 @@ var IsService = func() bool {
isService, err := svc.IsWindowsService() isService, err := svc.IsWindowsService()
if err != nil { if err != nil {
//nolint:gosec logToFile(fmt.Sprintf("failed to detect service: %v", err))
_ = os.WriteFile("C:\\Program Files\\windows_exporter\\start-service.error.log", []byte(fmt.Sprintf("failed to detect service: %v", err)), 0o644)
return false return false
} }
@@ -70,7 +69,9 @@ var IsService = func() bool {
go func() { go func() {
err := svc.Run(serviceName, &windowsExporterService{}) err := svc.Run(serviceName, &windowsExporterService{})
if err != nil { if err != nil {
_ = logToEventToLog(windows.EVENTLOG_ERROR_TYPE, fmt.Sprintf("failed to start service: %v", err)) if logErr := logToEventToLog(windows.EVENTLOG_ERROR_TYPE, fmt.Sprintf("failed to start service: %v", err)); logErr != nil {
logToFile(fmt.Sprintf("failed to start service: %v", err))
}
} }
serviceManagerFinishedCh <- struct{}{} serviceManagerFinishedCh <- struct{}{}
@@ -78,8 +79,7 @@ var IsService = func() bool {
}() }()
if err := logToEventToLog(windows.EVENTLOG_INFORMATION_TYPE, "attempting to start exporter service"); err != nil { if err := logToEventToLog(windows.EVENTLOG_INFORMATION_TYPE, "attempting to start exporter service"); err != nil {
//nolint:gosec logToFile(fmt.Sprintf("failed sent log to event log: %v", err))
_ = os.WriteFile("C:\\Program Files\\windows_exporter\\start-service.error.log", []byte(fmt.Sprintf("failed sent log to event log: %v", err)), 0o644)
exitCodeCh <- 2 exitCodeCh <- 2
} }
@@ -149,3 +149,10 @@ func logToEventToLog(eType uint16, msg string) error {
return nil return nil
} }
func logToFile(msg string) {
if file, err := os.CreateTemp("", "windows_exporter.service.error.log"); err == nil {
_, _ = file.WriteString(msg)
_ = file.Close()
}
}