72 lines
1.3 KiB
Go
72 lines
1.3 KiB
Go
package logger
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import (
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"io"
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"log/slog"
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"os"
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)
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// Builder object
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type LoggerBuilder struct {
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lvl slog.Level
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writers []io.Writer
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}
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// NewBuilder return a new logger builder object
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func NewBuilder() *LoggerBuilder {
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return new(LoggerBuilder)
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}
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// WithWriter sets a specific writer
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func (b *LoggerBuilder) WithWriter(w io.Writer) *LoggerBuilder {
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b.writers = append(b.writers, w)
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return b
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}
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// WithLevel sets log level
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func (b *LoggerBuilder) WithLevel(l slog.Level) *LoggerBuilder {
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b.lvl = l
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return b
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}
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// Build returns the logger
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func (b *LoggerBuilder) Build() *slog.Logger {
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if len(b.writers) == 0 {
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b.writers = append(b.writers, os.Stdout)
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}
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w := io.MultiWriter(b.writers...)
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return newLogger(b.lvl, w)
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}
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func newLogger(lvl slog.Level, w io.Writer) *slog.Logger {
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return slog.New(
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slog.NewJSONHandler(w, &slog.HandlerOptions{Level: lvl}),
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)
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}
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// Error logging attribute
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func Err(err error) slog.Attr {
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return slog.Attr{
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Key: "error",
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Value: slog.StringValue(err.Error()),
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}
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}
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// Maps level from a string. By default returns slog.LevelInfo
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func MapLevel(lvl string) slog.Level {
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switch lvl {
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case "dev", "local", "debug":
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return slog.LevelDebug
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case "warn":
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return slog.LevelWarn
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case "error":
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return slog.LevelError
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default:
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return slog.LevelInfo
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}
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}
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