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// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package slog_test

import (
	"context"
	"fmt"
	"log/slog"
	"os"
	"path/filepath"
	"runtime"
	"time"
)

// Infof is an example of a user-defined logging function that wraps slog.
// The log record contains the source position of the caller of Infof.
func Infof(logger *slog.Logger, format string, args ...any) {
	if !logger.Enabled(context.Background(), slog.LevelInfo) {
		return
	}
	var pcs [1]uintptr
	runtime.Callers(2, pcs[:]) // skip [Callers, Infof]
	r := slog.NewRecord(time.Now(), slog.LevelInfo, fmt.Sprintf(format, args...), pcs[0])
	_ = logger.Handler().Handle(context.Background(), r)
}

func Example_wrapping() {
	replace := func(groups []string, a slog.Attr) slog.Attr {
		// Remove time.
		if a.Key == slog.TimeKey && len(groups) == 0 {
			return slog.Attr{}
		}
		// Remove the directory from the source's filename.
		if a.Key == slog.SourceKey {
			source := a.Value.Any().(*slog.Source)
			source.File = filepath.Base(source.File)
		}
		return a
	}
	logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{AddSource: true, ReplaceAttr: replace}))
	Infof(logger, "message, %s", "formatted")

// Output:
	// level=INFO source=example_wrap_test.go:43 msg="message, formatted"
}

Batal

⬅ log 27 item

Nama	Tipe	Ukuran	Diubah	Aksi
📁internal	dir	—	2024-02-02 18:09	📂 Buka
🔵attr.go	go	2.5 KB	2024-02-02 18:09	✏️ 👁️
🔵attr_test.go	go	891 B	2024-02-02 18:09	✏️ 👁️
🔵doc.go	go	12.1 KB	2024-02-02 18:09	✏️ 👁️
🔵example_custom_levels_test.go	go	3 KB	2024-02-02 18:09	✏️ 👁️
🔵example_level_handler_test.go	go	2.2 KB	2024-02-02 18:09	✏️ 👁️
🔵example_log_level_test.go	go	1.9 KB	2024-02-02 18:09	✏️ 👁️
🔵example_logvaluer_group_test.go	go	825 B	2024-02-02 18:09	✏️ 👁️
🔵example_logvaluer_secret_test.go	go	906 B	2024-02-02 18:09	✏️ 👁️
🔵example_test.go	go	857 B	2024-02-02 18:09	✏️ 👁️
🔵example_wrap_test.go	go	1.3 KB	2024-02-02 18:09	✏️ 👁️
🔵handler.go	go	17.5 KB	2024-02-02 18:09	✏️ 👁️
🔵handler_test.go	go	19.6 KB	2024-02-02 18:09	✏️ 👁️
🔵json_handler.go	go	8.1 KB	2024-02-02 18:09	✏️ 👁️
🔵json_handler_test.go	go	6.5 KB	2024-02-02 18:09	✏️ 👁️
🔵level.go	go	5.6 KB	2024-02-02 18:09	✏️ 👁️
🔵level_test.go	go	3.8 KB	2024-02-02 18:09	✏️ 👁️
🔵logger.go	go	10.2 KB	2024-02-02 18:09	✏️ 👁️
🔵logger_test.go	go	19.5 KB	2024-02-02 18:09	✏️ 👁️
🔵record.go	go	6 KB	2024-02-02 18:09	✏️ 👁️
🔵record_test.go	go	4 KB	2024-02-02 18:09	✏️ 👁️
🔵slogtest_test.go	go	2.6 KB	2024-02-02 18:09	✏️ 👁️
🔵text_handler.go	go	4.7 KB	2024-02-02 18:09	✏️ 👁️
🔵text_handler_test.go	go	3.8 KB	2024-02-02 18:09	✏️ 👁️
🔵value.go	go	12.8 KB	2024-02-02 18:09	✏️ 👁️
🔵value_access_benchmark_test.go	go	4.3 KB	2024-02-02 18:09	✏️ 👁️
🔵value_test.go	go	6.1 KB	2024-02-02 18:09	✏️ 👁️

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