mirror of
https://github.com/gravitational/teleport.git
synced 2026-11-03 07:40:28 +08:00
rosstimothy
08b8f335b0
In addition to configuring output format users can configure the fields which are included in log messages. Prior to this our slog handlers didn't support this feature and always output the default fields. Now, both the slog and logrus output is identical no matter the extra_fields configuration as verified by TestExtraFields. It was also found that due to the way the logurs json formatter was configuring itself in CheckAndSetDefaults the timestamp was always included in the final output even if it was not included in the configured extra_fields.
78 lines
2.1 KiB
Go
78 lines
2.1 KiB
Go
//go:build !windows
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// +build !windows
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/*
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* Teleport
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* Copyright (C) 2023 Gravitational, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package utils
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import (
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"io"
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"log/syslog"
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"os"
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"github.com/gravitational/trace"
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"github.com/sirupsen/logrus"
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logrusSyslog "github.com/sirupsen/logrus/hooks/syslog"
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)
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// SwitchLoggingToSyslog configures the default logger to send output to syslog.
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func SwitchLoggingToSyslog() error {
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logger := logrus.StandardLogger()
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w, err := NewSyslogWriter()
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if err != nil {
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logger.Errorf("Failed to switch logging to syslog: %v.", err)
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logger.SetOutput(os.Stderr)
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return trace.Wrap(err)
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}
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hook, err := NewSyslogHook(w)
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if err != nil {
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logger.Errorf("Failed to switch logging to syslog: %v.", err)
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logger.SetOutput(os.Stderr)
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return trace.Wrap(err)
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}
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logger.ReplaceHooks(make(logrus.LevelHooks))
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logger.AddHook(hook)
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logger.SetOutput(io.Discard)
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return nil
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}
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// NewSyslogHook provides a [logrus.Hook] that sends output to syslog.
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func NewSyslogHook(w io.Writer) (logrus.Hook, error) {
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if w == nil {
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return nil, trace.BadParameter("syslog writer must not be nil")
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}
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sw, ok := w.(*syslog.Writer)
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if !ok {
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return nil, trace.BadParameter("expected a syslog writer, got %T", w)
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}
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return &logrusSyslog.SyslogHook{Writer: sw}, nil
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}
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// NewSyslogWriter creates a writer that outputs to the local machine syslog.
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func NewSyslogWriter() (io.Writer, error) {
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writer, err := syslog.Dial("", "", syslog.LOG_WARNING, "")
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return writer, trace.Wrap(err)
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}
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