github.com/searKing/golang/go@v1.2.117/log/slog/example_logvaluer_secret_test.go (about)

     1  // Copyright 2022 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package slog
     6  
     7  import (
     8  	"fmt"
     9  	"log/slog"
    10  	"os"
    11  
    12  	"github.com/searKing/golang/go/log/slog/internal/slogtest"
    13  )
    14  
    15  // A token is a secret value that grants permissions.
    16  type Token string
    17  
    18  // LogValue implements slog.LogValuer.
    19  // It avoids revealing the token.
    20  func (Token) LogValue() slog.Value {
    21  	return slog.StringValue("REDACTED_TOKEN")
    22  }
    23  
    24  // This example demonstrates a Value that replaces itself
    25  // with an alternative representation to avoid revealing secrets.
    26  func ExampleLogValuer_secret() {
    27  	getPid = func() int { return 0 } // set pid to zero for test
    28  	defer func() { getPid = os.Getpid }()
    29  	t := Token("shhhh!")
    30  	{
    31  		fmt.Printf("----text----\n")
    32  		logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{ReplaceAttr: slogtest.RemoveTime}))
    33  		logger.Info("permission granted", "user", "Perry", "token", t)
    34  	}
    35  	{
    36  		fmt.Printf("----glog----\n")
    37  		logger := slog.New(NewGlogHandler(os.Stdout, &slog.HandlerOptions{ReplaceAttr: slogtest.RemoveTime}))
    38  		logger.Info("permission granted", "user", "Perry", "token", t)
    39  	}
    40  	{
    41  		fmt.Printf("----glog_human----\n")
    42  		logger := slog.New(NewGlogHumanHandler(os.Stdout, &slog.HandlerOptions{ReplaceAttr: slogtest.RemoveTime}))
    43  		logger.Info("permission granted", "user", "Perry", "token", t)
    44  	}
    45  
    46  	// Output:
    47  	// ----text----
    48  	// level=INFO msg="permission granted" user=Perry token=REDACTED_TOKEN
    49  	// ----glog----
    50  	// I 0] permission granted, user=Perry, token=REDACTED_TOKEN
    51  	// ----glog_human----
    52  	// [INFO ] [0] permission granted, user=Perry, token=REDACTED_TOKEN
    53  }