go: infra/libs/* now live in luci-go.

go/src/infra/libs/logging/gologger/gologger.go

-// Copyright 2015 The Chromium 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 gologger
-
-import (
-        "golang.org/x/net/context"
-        "os"
-
-        gol "github.com/op/go-logging"
-
-        "infra/libs/logging"
-)
-
-const fmt string = "%{color}" +
-        "[P%{pid} %{time:15:04:05.000} %{shortfile} %{level:.4s} %{id:03x}]" +
-        "%{color:reset} %{message}"
-
-type loggerImpl struct {
-        l *gol.Logger
-}
-
-func (l *loggerImpl) Infof(format string, args ...interface{})    { l.l.Info(format, args...) }
-func (l *loggerImpl) Warningf(format string, args ...interface{}) { l.l.Warning(format, args...) }
-func (l *loggerImpl) Errorf(format string, args ...interface{})   { l.l.Error(format, args...) }
-
-// UseFile adds a go-logging logger to the context which writes to the provided
-// file. Caller is still responsible for closing the file when no longer needed.
-func UseFile(c context.Context, f *os.File) context.Context {
-        backend := gol.NewLogBackend(f, "", 0)
-        formatted := gol.NewBackendFormatter(backend, gol.MustStringFormatter(fmt))
-        gol.SetBackend(formatted)
-        log := &loggerImpl{gol.MustGetLogger("")}
-        log.l.ExtraCalldepth = 1 // one layer of wrapping in loggerImpl struct above
-        return logging.Set(c, func(context.Context) logging.Logger { return log })
-}
-
-// Use adds a go-logging logger to the context which writes to os.Stdout.
-func Use(c context.Context) context.Context {
-        return UseFile(c, os.Stdout)
-}
-
-// Get returns default go-logging based logger.
-func Get() logging.Logger {
-        return logging.Get(Use(context.Background()))
-}