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Defines a `winsvc.Event` type which can be sent using the `winsvc.SendEvent` function. If nomad is running on Windows and can send to the Windows Eventlog the event will be sent. Initial event types are defined for starting, ready, stopped, and log message. The `winsvc.EventLogger` provides an `io.WriteCloser` that can be included in the logger's writers collection. It will extract the log level from log lines and write them appropriately to the eventlog. The eventlog only supports error, warning, and info levels so messages with other levels will be ignored. A new configuration block is included for enabling logging to the eventlog. Logging must be enabled with the `log_level` option and the `eventlog.level` value can then be of the same or higher severity.
74 lines
1.5 KiB
Go
74 lines
1.5 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: BUSL-1.1
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package winsvc
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type WindowsEventId uint32
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//go:generate stringer -trimprefix=Event -output strings_eventid.go -linecomment -type=WindowsEventId
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const (
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EventUnknown WindowsEventId = iota // unknown event
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EventServiceStarting // service starting
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EventServiceReady // service ready
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EventServiceStopped // service stopped
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EventLogMessage // log message
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)
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// NewEvent creates a new Event for the Windows Eventlog
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func NewEvent(kind WindowsEventId, opts ...EventOption) Event {
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evt := &event{
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kind: kind,
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level: EVENTLOG_LEVEL_INFO,
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}
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for _, fn := range opts {
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fn(evt)
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}
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return evt
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}
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type Event interface {
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Kind() WindowsEventId
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Message() string
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Level() EventlogLevel
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}
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type EventOption func(*event)
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// WithEventMessage sets a custom message for the event
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func WithEventMessage(msg string) EventOption {
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return func(e *event) {
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e.message = msg
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}
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}
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// WithEventLevel specifies the level used for the event
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func WithEventLevel(level EventlogLevel) EventOption {
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return func(e *event) {
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e.level = level
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}
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}
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type event struct {
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kind WindowsEventId
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message string
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level EventlogLevel
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}
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func (e *event) Kind() WindowsEventId {
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return e.kind
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}
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func (e *event) Message() string {
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if e.message != "" {
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return e.message
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}
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return e.kind.String()
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}
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func (e *event) Level() EventlogLevel {
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return e.level
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}
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