Why Go
- Case Studies
  
  Common problems companies solve with Go
- Use Cases
  
  Stories about how and why companies use Go
- Security Policy
  
  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

log

package

Go to main page

Versions in this module

v1

v1.7.1

Oct 3, 2017

v1.7.0

Sep 14, 2017

v1.6.6

Jun 23, 2017

v1.6.5

Jun 1, 2017

v1.6.4

Jun 1, 2017

v1.6.3

Jun 1, 2017

v1.6.2

May 31, 2017

v1.6.1

May 4, 2017

v1.6.0

Apr 14, 2017

Changes in this version

+ var Must muster

+ var StderrHandler = StreamHandler(os.Stderr, LogfmtFormat())

+ var StdoutHandler = StreamHandler(os.Stdout, LogfmtFormat())

+ func Crit(msg string, ctx ...interface{})

+ func Debug(msg string, ctx ...interface{})

+ func Error(msg string, ctx ...interface{})

+ func Info(msg string, ctx ...interface{})

+ func PrintOrigins(print bool)

+ func Trace(msg string, ctx ...interface{})

+ func Warn(msg string, ctx ...interface{})

+ type Ctx map[string]interface

+ type Format interface

+ Format func(r *Record) []byte

+ func FormatFunc(f func(*Record) []byte) Format

+ func JsonFormat() Format

+ func JsonFormatEx(pretty, lineSeparated bool) Format

+ func LogfmtFormat() Format

+ func TerminalFormat(usecolor bool) Format

+ type GlogHandler struct

+ func NewGlogHandler(h Handler) *GlogHandler

+ func (h *GlogHandler) BacktraceAt(location string) error

+ func (h *GlogHandler) Log(r *Record) error

+ func (h *GlogHandler) Verbosity(level Lvl)

+ func (h *GlogHandler) Vmodule(ruleset string) error

+ type Handler interface

+ Log func(r *Record) error

+ func BufferedHandler(bufSize int, h Handler) Handler

+ func CallerFileHandler(h Handler) Handler

+ func CallerFuncHandler(h Handler) Handler

+ func CallerStackHandler(format string, h Handler) Handler

+ func ChannelHandler(recs chan<- *Record) Handler

+ func DiscardHandler() Handler

+ func FailoverHandler(hs ...Handler) Handler

+ func FileHandler(path string, fmtr Format) (Handler, error)

+ func FilterHandler(fn func(r *Record) bool, h Handler) Handler

+ func FuncHandler(fn func(r *Record) error) Handler

+ func LazyHandler(h Handler) Handler

+ func LvlFilterHandler(maxLvl Lvl, h Handler) Handler

+ func MatchFilterHandler(key string, value interface{}, h Handler) Handler

+ func MultiHandler(hs ...Handler) Handler

+ func NetHandler(network, addr string, fmtr Format) (Handler, error)

+ func StreamHandler(wr io.Writer, fmtr Format) Handler

+ func SyncHandler(h Handler) Handler

+ func SyslogHandler(priority syslog.Priority, tag string, fmtr Format) (Handler, error)

+ func SyslogNetHandler(net, addr string, priority syslog.Priority, tag string, fmtr Format) (Handler, error)

+ type Lazy struct

+ Fn interface{}

+ type Logger interface

+ Crit func(msg string, ctx ...interface{})

+ Debug func(msg string, ctx ...interface{})

+ Error func(msg string, ctx ...interface{})

+ GetHandler func() Handler

+ Info func(msg string, ctx ...interface{})

+ New func(ctx ...interface{}) Logger

+ SetHandler func(h Handler)

+ Trace func(msg string, ctx ...interface{})

+ Warn func(msg string, ctx ...interface{})

+ func New(ctx ...interface{}) Logger

+ func Root() Logger

+ type Lvl int

+ const LvlCrit

+ const LvlDebug

+ const LvlError

+ const LvlInfo

+ const LvlTrace

+ const LvlWarn

+ func LvlFromString(lvlString string) (Lvl, error)

+ func (l Lvl) AlignedString() string

+ func (l Lvl) String() string

+ type Record struct

+ Call stack.Call

+ Ctx []interface{}

+ KeyNames RecordKeyNames

+ Lvl Lvl

+ Msg string

+ Time time.Time

+ type RecordKeyNames struct

+ Lvl string

+ Msg string

+ Time string

+ type TerminalStringer interface

+ TerminalString func() string