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example.go
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example.go
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package main
import (
"os"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-logging"
)
var log = logging.MustGetLogger("example")
// Example format string. Everything except the message has a custom color
// which is dependent on the log level. Many fields have a custom output
// formatting too, eg. the time returns the hour down to the milli second.
var format = "%{color}%{time:15:04:05.000000} %{shortfunc} ▶ %{level:.4s} %{id:03x}%{color:reset} %{message}"
// Password is just an example type implementing the Redactor interface. Any
// time this is logged, the Redacted() function will be called.
type Password string
func (p Password) Redacted() interface{} {
return logging.Redact(string(p))
}
func main() {
// Setup one stderr and one syslog backend and combine them both into one
// logging backend. By default stderr is used with the standard log flag.
logBackend := logging.NewLogBackend(os.Stderr, "", 0)
syslogBackend, err := logging.NewSyslogBackend("")
if err != nil {
log.Fatal(err)
}
logging.SetBackend(logBackend, syslogBackend)
logging.SetFormatter(logging.MustStringFormatter(format))
// For "example", set the log level to DEBUG and ERROR.
for _, level := range []logging.Level{logging.DEBUG, logging.ERROR} {
logging.SetLevel(level, "example")
log.Debug("debug %s", Password("secret"))
log.Info("info")
log.Notice("notice")
log.Warning("warning")
log.Error("err")
log.Critical("crit")
}
}