logger.go

package ammana

import (
    "io"
    "io/ioutil"
    "log"
    "os"
)

//logger
type logger struct {
    traceHandle   io.Writer
    infoHandle    io.Writer
    warningHandle io.Writer
    errorHandle   io.Writer
}

//newLogger, logger constructor
func newLogger() *logger {
    return &logger{
        traceHandle:   ioutil.Discard,
        infoHandle:    os.Stdout,
        warningHandle: os.Stdout,
        errorHandle:   os.Stderr,
    }
}

//trace
func (l *logger) trace() *log.Logger {
    return log.New(l.traceHandle,
        "TRACE: ",
        log.Ldate|log.Ltime|log.Lshortfile)
}

//info
func (l *logger) info() *log.Logger {
    return log.New(l.infoHandle,
        "INFO: ",
        log.Ldate|log.Ltime|log.Lshortfile)
}

//warning
func (l *logger) warning() *log.Logger {
    return log.New(l.warningHandle,
        "WARNING: ",
        log.Ldate|log.Ltime|log.Lshortfile)
}

//error
func (l *logger) error() *log.Logger {
    return log.New(l.errorHandle,
        "ERROR: ",
        log.Ldate|log.Ltime|log.Lshortfile)
}