mirror of
https://codeberg.org/forgejo/forgejo
synced 2024-11-24 02:36:10 +01:00
012a1e0497
Provide a bit more journald integration. Specifically: - support emission of printk-style log level prefixes, documented in [`sd-daemon`(3)](https://man7.org/linux/man-pages/man3/sd-daemon.3.html#DESCRIPTION), that allow journald to automatically annotate stderr log lines with their level; - add a new "journaldflags" item that is supposed to be used in place of "stdflags" when under journald to reduce log clutter (i. e. strip date/time info to avoid duplication, and use log level prefixes instead of textual log levels); - detect whether stderr and/or stdout are attached to journald by parsing `$JOURNAL_STREAM` environment variable and adjust console logger defaults accordingly. <!--start release-notes-assistant--> ## Draft release notes <!--URL:https://codeberg.org/forgejo/forgejo--> - Features - [PR](https://codeberg.org/forgejo/forgejo/pulls/2869): <!--number 2869 --><!--line 0 --><!--description bG9nOiBqb3VybmFsZCBpbnRlZ3JhdGlvbg==-->log: journald integration<!--description--> <!--end release-notes-assistant--> Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/2869 Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org> Co-authored-by: Ivan Shapovalov <intelfx@intelfx.name> Co-committed-by: Ivan Shapovalov <intelfx@intelfx.name>
137 lines
2.7 KiB
Go
137 lines
2.7 KiB
Go
// Copyright 2019 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package log
|
|
|
|
import (
|
|
"bytes"
|
|
"strings"
|
|
|
|
"code.gitea.io/gitea/modules/json"
|
|
)
|
|
|
|
// Level is the level of the logger
|
|
type Level int
|
|
|
|
const (
|
|
UNDEFINED Level = iota
|
|
TRACE
|
|
DEBUG
|
|
INFO
|
|
WARN
|
|
ERROR
|
|
FATAL
|
|
NONE
|
|
)
|
|
|
|
const CRITICAL = ERROR // most logger frameworks doesn't support CRITICAL, and it doesn't seem useful
|
|
|
|
var toString = map[Level]string{
|
|
UNDEFINED: "undefined",
|
|
|
|
TRACE: "trace",
|
|
DEBUG: "debug",
|
|
INFO: "info",
|
|
WARN: "warn",
|
|
ERROR: "error",
|
|
|
|
FATAL: "fatal",
|
|
NONE: "none",
|
|
}
|
|
|
|
// Machine-readable log level prefixes as defined in sd-daemon(3).
|
|
//
|
|
// "If a systemd service definition file is configured with StandardError=journal
|
|
// or StandardError=kmsg (and similar with StandardOutput=), these prefixes can
|
|
// be used to encode a log level in lines printed. <...> To use these prefixes
|
|
// simply prefix every line with one of these strings. A line that is not prefixed
|
|
// will be logged at the default log level SD_INFO."
|
|
var toJournalPrefix = map[Level]string{
|
|
TRACE: "<7>", // SD_DEBUG
|
|
DEBUG: "<6>", // SD_INFO
|
|
INFO: "<5>", // SD_NOTICE
|
|
WARN: "<4>", // SD_WARNING
|
|
ERROR: "<3>", // SD_ERR
|
|
FATAL: "<2>", // SD_CRIT
|
|
}
|
|
|
|
var toLevel = map[string]Level{
|
|
"undefined": UNDEFINED,
|
|
|
|
"trace": TRACE,
|
|
"debug": DEBUG,
|
|
"info": INFO,
|
|
"warn": WARN,
|
|
"warning": WARN,
|
|
"error": ERROR,
|
|
|
|
"fatal": FATAL,
|
|
"none": NONE,
|
|
}
|
|
|
|
var levelToColor = map[Level][]ColorAttribute{
|
|
TRACE: {Bold, FgCyan},
|
|
DEBUG: {Bold, FgBlue},
|
|
INFO: {Bold, FgGreen},
|
|
WARN: {Bold, FgYellow},
|
|
ERROR: {Bold, FgRed},
|
|
FATAL: {Bold, BgRed},
|
|
NONE: {Reset},
|
|
}
|
|
|
|
func (l Level) String() string {
|
|
s, ok := toString[l]
|
|
if ok {
|
|
return s
|
|
}
|
|
return "info"
|
|
}
|
|
|
|
func (l Level) JournalPrefix() string {
|
|
return toJournalPrefix[l]
|
|
}
|
|
|
|
func (l Level) ColorAttributes() []ColorAttribute {
|
|
color, ok := levelToColor[l]
|
|
if ok {
|
|
return color
|
|
}
|
|
none := levelToColor[NONE]
|
|
return none
|
|
}
|
|
|
|
// MarshalJSON takes a Level and turns it into text
|
|
func (l Level) MarshalJSON() ([]byte, error) {
|
|
buffer := bytes.NewBufferString(`"`)
|
|
buffer.WriteString(toString[l])
|
|
buffer.WriteString(`"`)
|
|
return buffer.Bytes(), nil
|
|
}
|
|
|
|
// UnmarshalJSON takes text and turns it into a Level
|
|
func (l *Level) UnmarshalJSON(b []byte) error {
|
|
var tmp any
|
|
err := json.Unmarshal(b, &tmp)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
switch v := tmp.(type) {
|
|
case string:
|
|
*l = LevelFromString(v)
|
|
case int:
|
|
*l = LevelFromString(Level(v).String())
|
|
default:
|
|
*l = INFO
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// LevelFromString takes a level string and returns a Level
|
|
func LevelFromString(level string) Level {
|
|
if l, ok := toLevel[strings.ToLower(level)]; ok {
|
|
return l
|
|
}
|
|
return INFO
|
|
}
|