107 lines
1.9 KiB
Go
107 lines
1.9 KiB
Go
package log
|
|
|
|
import (
|
|
"encoding/json"
|
|
"strings"
|
|
)
|
|
|
|
// Level is a well-known log level, as defined below
|
|
type Level int
|
|
|
|
// Well known log levels
|
|
const (
|
|
TraceLevel Level = iota
|
|
DebugLevel
|
|
InfoLevel
|
|
WarnLevel
|
|
ErrorLevel
|
|
FatalLevel
|
|
)
|
|
|
|
func (l Level) String() string {
|
|
switch l {
|
|
case TraceLevel:
|
|
return "TRACE"
|
|
case DebugLevel:
|
|
return "DEBUG"
|
|
case InfoLevel:
|
|
return "INFO"
|
|
case WarnLevel:
|
|
return "WARN"
|
|
case ErrorLevel:
|
|
return "ERROR"
|
|
case FatalLevel:
|
|
return "FATAL"
|
|
}
|
|
return "unknown"
|
|
}
|
|
|
|
// MarshalJSON converts a level to a JSON string
|
|
func (l Level) MarshalJSON() ([]byte, error) {
|
|
return json.Marshal(l.String())
|
|
}
|
|
|
|
// ToLevel converts a string to a Level. It returns InfoLevel if the string
|
|
// does not match any known log levels.
|
|
func ToLevel(s string) Level {
|
|
switch strings.ToUpper(s) {
|
|
case "TRACE":
|
|
return TraceLevel
|
|
case "DEBUG":
|
|
return DebugLevel
|
|
case "INFO":
|
|
return InfoLevel
|
|
case "WARN", "WARNING":
|
|
return WarnLevel
|
|
case "ERROR":
|
|
return ErrorLevel
|
|
default:
|
|
return InfoLevel
|
|
}
|
|
}
|
|
|
|
// Format is a well-known log format
|
|
type Format int
|
|
|
|
// Log formats
|
|
const (
|
|
TextFormat Format = iota
|
|
JSONFormat
|
|
)
|
|
|
|
func (f Format) String() string {
|
|
switch f {
|
|
case TextFormat:
|
|
return "text"
|
|
case JSONFormat:
|
|
return "json"
|
|
}
|
|
return "unknown"
|
|
}
|
|
|
|
// ToFormat converts a string to a Format. It returns TextFormat if the string
|
|
// does not match any known log formats.
|
|
func ToFormat(s string) Format {
|
|
switch strings.ToLower(s) {
|
|
case "text":
|
|
return TextFormat
|
|
case "json":
|
|
return JSONFormat
|
|
default:
|
|
return TextFormat
|
|
}
|
|
}
|
|
|
|
// Contexter allows structs to export a key-value pairs in the form of a Context
|
|
type Contexter interface {
|
|
// Context returns the object context as key-value pairs
|
|
Context() Context
|
|
}
|
|
|
|
// Context represents an object's state in the form of key-value pairs
|
|
type Context map[string]any
|
|
|
|
type levelOverride struct {
|
|
value any
|
|
level Level
|
|
}
|