Why Go
- Case Studies
  
  Common problems companies solve with Go
- Use Cases
  
  Stories about how and why companies use Go
- Security
  
  How Go can help keep you secure by default
Learn
Docs
- Effective Go
  
  Tips for writing clear, performant, and idiomatic Go code
- Go User Manual
  
  A complete introduction to building software with Go
- Standard library
  
  Reference documentation for Go's standard library
- Release Notes
  
  Learn what's new in each Go release
Packages
Community
- Recorded Talks
  
  Videos from prior events
- Meetups
  
  Meet other local Go developers
- Conferences
  
  Learn and network with Go developers from around the world
- Go blog
  
  The Go project's official blog.
- Go project
  
  Get help and stay informed from Go
- Get connected

logger

package

Go to main page

Versions in this module

v1

v1.0.0

Feb 1, 2026

Changes in this version

+ const DebugLevel

+ const ErrorLevel

+ const FatalLevel

+ const InfoLevel

+ const WarnLevel

+ func Debug(msg string)

+ func Debugf(format string, args ...interface{})

+ func Error(msg string)

+ func Errorf(format string, args ...interface{})

+ func Info(msg string)

+ func Infof(format string, args ...interface{})

+ func SetGlobal(l *Logger)

+ func Warn(msg string)

+ func Warnf(format string, args ...interface{})

+ type Config struct

+ Component string

+ Level Level

+ Output io.Writer

+ Pretty bool

+ TimeFormat string

+ func DefaultConfig() Config

+ type Level = zerolog.Level

+ func ParseLevel(levelStr string) (Level, error)

+ type Logger struct

+ func Global() *Logger

+ func New(cfg Config) *Logger

+ func NewDefault() *Logger

+ func NewJSON(level Level) *Logger

+ func (l *Logger) CrawlEvent(level Level, url string, depth int, workerID int) *zerolog.Event

+ func (l *Logger) Debug(msg string)

+ func (l *Logger) Debugf(format string, args ...interface{})

+ func (l *Logger) DiscoveryEvent(discoveryType, url, source string)

+ func (l *Logger) Error(msg string)

+ func (l *Logger) ErrorEvent(err error, url string, operation string)

+ func (l *Logger) Errorf(format string, args ...interface{})

+ func (l *Logger) Event(level Level) *zerolog.Event

+ func (l *Logger) Fatal(msg string)

+ func (l *Logger) Fatalf(format string, args ...interface{})

+ func (l *Logger) Info(msg string)

+ func (l *Logger) Infof(format string, args ...interface{})

+ func (l *Logger) RequestEvent(method, url string, statusCode int, duration time.Duration)

+ func (l *Logger) SetLevel(level Level)

+ func (l *Logger) StatsEvent(stats map[string]interface{})

+ func (l *Logger) Warn(msg string)

+ func (l *Logger) Warnf(format string, args ...interface{})

+ func (l *Logger) WithComponent(component string) *Logger

+ func (l *Logger) WithDepth(depth int) *Logger

+ func (l *Logger) WithDuration(d time.Duration) *Logger

+ func (l *Logger) WithError(err error) *Logger

+ func (l *Logger) WithField(key string, value interface{}) *Logger

+ func (l *Logger) WithFields(fields map[string]interface{}) *Logger

+ func (l *Logger) WithURL(url string) *Logger

+ func (l *Logger) WithWorker(workerID int) *Logger