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