Hide sensitive fields in Uber Zap go

Is there any way in which I can hide logging sensitive fields while using ubergo zap.

Will appreciate if somebody can show an example

You can make those fields custom type and implement Stringer interface for them printing ****. For example:

type X string

func (x X) String() string {
    return "***"
}
func main() {
    x := X("aaaaa")
    log.Infow("msg", "x", x)
}

will print msg {"x": "***"}.

Or you can implement your own version of Encoder where you would filter fields by name or their type Interface in EncodeEntry(ent Entry, fields []Field) function. You can take one of the two existing encoders - console or json - as a base. For example:

package main

import (
    "go.uber.org/zap"
    "go.uber.org/zap/buffer"
    "go.uber.org/zap/zapcore"
)

type MyEncoder struct {
    zapcore.Encoder
}

func (m *MyEncoder) EncodeEntry(entry zapcore.Entry, fields []zapcore.Field) (*buffer.Buffer, error) {
    filtered := make([]zapcore.Field, 0, len(fields))
    for _, field := range fields {
        if field.Key == "skip" || field.Type == zapcore.Int64Type {
            continue
        }
        filtered = append(filtered, field)
    }
    return m.Encoder.EncodeEntry(entry, filtered)
}

func main() {
    _ = zap.RegisterEncoder("mine", func(config zapcore.EncoderConfig) (zapcore.Encoder, error) {
        encoder := zapcore.NewConsoleEncoder(config)
        return &MyEncoder{encoder}, nil
    })
    config := zap.NewDevelopmentConfig()
    config.Encoding = "mine"
    log, _ := config.Build()
    sugar := log.Sugar()
    sugar.Infow("Some message", "skip", "skipped", "notskip", "present", "alsoskipping", int64(1))
}

This will print

2022-08-24T13:25:54.368+0200    INFO    testl/main.go:33        Some message    {"notskip": "present"}