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// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package log
import (
"bytes"
"encoding/json"
"fmt"
"os"
"strings"
)
// Level is the level of the logger
type Level int
const (
// TRACE represents the lowest log level
TRACE Level = iota
// DEBUG is for debug logging
DEBUG
// INFO is for information
INFO
// WARN is for warning information
WARN
// ERROR is for error reporting
ERROR
// CRITICAL is for critical errors
CRITICAL
// FATAL is for fatal errors
FATAL
// NONE is for no logging
NONE
)
var toString = map[Level]string{
TRACE: "trace",
DEBUG: "debug",
INFO: "info",
WARN: "warn",
ERROR: "error",
CRITICAL: "critical",
FATAL: "fatal",
NONE: "none",
}
var toLevel = map[string]Level{
"trace": TRACE,
"debug": DEBUG,
"info": INFO,
"warn": WARN,
"error": ERROR,
"critical": CRITICAL,
"fatal": FATAL,
"none": NONE,
}
// Levels returns all the possible logging levels
func Levels() []string {
keys := make([]string, 0)
for key := range toLevel {
keys = append(keys, key)
}
return keys
}
func (l Level) String() string {
s, ok := toString[l]
if ok {
return s
}
return "info"
}
// 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
}
// FromString takes a level string and returns a Level
func FromString(level string) Level {
temp, ok := toLevel[strings.ToLower(level)]
if !ok {
return INFO
}
return temp
}
// UnmarshalJSON takes text and turns it into a Level
func (l *Level) UnmarshalJSON(b []byte) error {
var tmp interface{}
err := json.Unmarshal(b, &tmp)
if err != nil {
fmt.Fprintf(os.Stderr, "Err: %v", err)
return err
}
switch v := tmp.(type) {
case string:
*l = FromString(v)
case int:
*l = FromString(Level(v).String())
default:
*l = INFO
}
return nil
}
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