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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 (
"log/slog"
"log/slog/internal/slogtest"
"os"
)
// A token is a secret value that grants permissions.
type Token string
// LogValue implements slog.LogValuer.
// It avoids revealing the token.
func (Token) LogValue() slog.Value {
return slog.StringValue("REDACTED_TOKEN")
}
// This example demonstrates a Value that replaces itself
// with an alternative representation to avoid revealing secrets.
func ExampleLogValuer_secret() {
t := Token("shhhh!")
logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{ReplaceAttr: slogtest.RemoveTime}))
logger.Info("permission granted", "user", "Perry", "token", t)
// Output:
// level=INFO msg="permission granted" user=Perry token=REDACTED_TOKEN
}
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