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📁 ..
📄 attr.go(2.49 KB)
📄 attr_test.go(891 B)
📄 doc.go(12.13 KB)
📄 example_custom_levels_test.go(2.99 KB)
📄 example_level_handler_test.go(2.18 KB)
📄 example_log_level_test.go(1.85 KB)
📄 example_logvaluer_group_test.go(825 B)
📄 example_logvaluer_secret_test.go(906 B)
📄 example_test.go(857 B)
📄 example_wrap_test.go(1.34 KB)
📄 handler.go(17.48 KB)
📄 handler_test.go(19.61 KB)
📁 internal
📄 json_handler.go(8.05 KB)
📄 json_handler_test.go(6.48 KB)
📄 level.go(5.64 KB)
📄 level_test.go(3.75 KB)
📄 logger.go(10.22 KB)
📄 logger_test.go(19.48 KB)
📄 record.go(5.98 KB)
📄 record_test.go(4 KB)
📄 slogtest_test.go(2.61 KB)
📄 text_handler.go(4.71 KB)
📄 text_handler_test.go(3.81 KB)
📄 value.go(12.8 KB)
📄 value_access_benchmark_test.go(4.29 KB)
📄 value_test.go(6.08 KB)

Editing: example_wrap_test.go

// 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"
}

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Editing: example_wrap_test.go

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