40 lines
1.1 KiB
Go
40 lines
1.1 KiB
Go
package util
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import (
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"log"
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"strings"
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"golang.org/x/sys/windows"
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"golang.org/x/sys/windows/svc/eventlog"
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)
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type eventLogWriter struct {
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el *eventlog.Log
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}
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// Write sends a log message to the Event Log.
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func (w *eventLogWriter) Write(b []byte) (int, error) {
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return len(b), w.el.Info(1, string(b))
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}
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func ConfigureSyslog(serviceName string) error {
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// Note that the eventlog src is the same as the service name
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// Otherwise, we will get "the description for event id cannot be found" warning in every log record
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// Continue if we receive "registry key already exists" or if we get
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// ERROR_ACCESS_DENIED so that we can log without administrative permissions
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// for pre-existing eventlog sources.
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if err := eventlog.InstallAsEventCreate(serviceName, eventlog.Info|eventlog.Warning|eventlog.Error); err != nil {
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if !strings.Contains(err.Error(), "registry key already exists") && err != windows.ERROR_ACCESS_DENIED {
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return err
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}
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}
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el, err := eventlog.Open(serviceName)
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if err != nil {
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return err
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}
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log.SetOutput(&eventLogWriter{el: el})
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return nil
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}
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