This a logger supporting the following outputs:
- stderr
- network (TCP, UDP, Unix networks)
- file (zlib compression)
- custom output
go get github.com/avegner/log
Logger has a very simple interface:
type Logger interface {
Printf(level Level, format string, args ...interface{}) error
SetMask(mask Level)
Flush() error
Child(name string) Logger
}Printf- prints a log message with the given levelSetMask- sets enabled log levelsFlush- flushes all log outputsChild- creates a child logger with the same parameters (mask, outputs, flags)
Each output supports the following interface:
type Outputter interface {
io.Writer
io.Closer
Flush() error
}There are standard outputs:
func NewNetOut(network, address string) (Outputter, error)
func NewFileOut(name string, perm os.FileMode, append bool, comprLevel int) (Outputter, error)
func NewStderrOut() (Outputter, error)Any custom output implementing Outputter interface may be created.
To create a logger and a child logger:
// main scope
o, err := out.NewStderrOut()
if err != nil {
// ...
}
mlog := log.New("main", log.ALL_LEVELS, log.STD_FLAGS, []out.Outputter{o})
// module scope
chlog := mlog.Child("module")