90 lines
2.2 KiB
Go
90 lines
2.2 KiB
Go
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// Copyright 2015 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build windows
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package log
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import (
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"fmt"
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"os"
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"golang.org/x/sys/windows/svc/eventlog"
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"github.com/sirupsen/logrus"
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)
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func init() {
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setEventlogFormatter = func(l logger, name string, debugAsInfo bool) error {
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if name == "" {
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return fmt.Errorf("missing name parameter")
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}
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fmter, err := newEventlogger(name, debugAsInfo, l.entry.Logger.Formatter)
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if err != nil {
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fmt.Fprintf(os.Stderr, "error creating eventlog formatter: %v\n", err)
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l.Errorf("can't connect logger to eventlog: %v", err)
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return err
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}
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l.entry.Logger.Formatter = fmter
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return nil
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}
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}
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type eventlogger struct {
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log *eventlog.Log
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debugAsInfo bool
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wrap logrus.Formatter
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}
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func newEventlogger(name string, debugAsInfo bool, fmter logrus.Formatter) (*eventlogger, error) {
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logHandle, err := eventlog.Open(name)
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if err != nil {
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return nil, err
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}
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return &eventlogger{log: logHandle, debugAsInfo: debugAsInfo, wrap: fmter}, nil
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}
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func (s *eventlogger) Format(e *logrus.Entry) ([]byte, error) {
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data, err := s.wrap.Format(e)
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if err != nil {
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fmt.Fprintf(os.Stderr, "eventlogger: can't format entry: %v\n", err)
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return data, err
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}
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switch e.Level {
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case logrus.PanicLevel:
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fallthrough
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case logrus.FatalLevel:
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fallthrough
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case logrus.ErrorLevel:
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err = s.log.Error(102, e.Message)
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case logrus.WarnLevel:
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err = s.log.Warning(101, e.Message)
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case logrus.InfoLevel:
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err = s.log.Info(100, e.Message)
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case logrus.DebugLevel:
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if s.debugAsInfo {
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err = s.log.Info(100, e.Message)
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}
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default:
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err = s.log.Info(100, e.Message)
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}
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if err != nil {
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fmt.Fprintf(os.Stderr, "eventlogger: can't send log to eventlog: %v\n", err)
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}
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return data, err
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}
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