blob: 2d36289a68d70e569baeddb404739bd78f6d3cd8 [file] [log] [blame]
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
stdlog "log"
type logger interface {
Printf(format string, args ...interface{})
Errorf(format string, args ...interface{})
Fatalf(format string, args ...interface{})
// stdLogger implements the logger interface using the log package.
// There is no need to specify a date/time prefix since stdout and stderr
// are logged in StackDriver with those values already present.
type stdLogger struct {
stderr *stdlog.Logger
stdout *stdlog.Logger
func newStdLogger() *stdLogger {
return &stdLogger{
stdout: stdlog.New(os.Stdout, "", 0),
stderr: stdlog.New(os.Stderr, "", 0),
func (l *stdLogger) Printf(format string, args ...interface{}) {
l.stdout.Printf(format, args...)
func (l *stdLogger) Errorf(format string, args ...interface{}) {
l.stderr.Printf(format, args...)
func (l *stdLogger) Fatalf(format string, args ...interface{}) {
l.stderr.Fatalf(format, args...)