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logger.go
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logger.go
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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*
Package log defines logging for grpc.
*/
package grpclog
import (
"log"
"os"
"github.com/golang/glog"
)
var (
// GLogger is a Logger that uses glog. This is the default logger.
GLogger Logger = &glogger{}
// StdLogger is a Logger that uses golang's standard logger.
StdLogger Logger = log.New(os.Stderr, "", log.LstdFlags)
logger = GLogger
)
// Logger mimics golang's standard Logger as an interface.
type Logger interface {
Fatal(args ...interface{})
Fatalf(format string, args ...interface{})
Fatalln(args ...interface{})
Print(args ...interface{})
Printf(format string, args ...interface{})
Println(args ...interface{})
}
// SetLogger sets the logger that is used in grpc.
func SetLogger(l Logger) {
logger = l
}
// Fatal is equivalent to Print() followed by a call to os.Exit() with a non-zero exit code.
func Fatal(args ...interface{}) {
logger.Fatal(args...)
}
// Fatal is equivalent to Printf() followed by a call to os.Exit() with a non-zero exit code.
func Fatalf(format string, args ...interface{}) {
logger.Fatalf(format, args...)
}
// Fatal is equivalent to Println() followed by a call to os.Exit()) with a non-zero exit code.
func Fatalln(args ...interface{}) {
logger.Fatalln(args...)
}
// Print prints to the logger. Arguments are handled in the manner of fmt.Print.
func Print(args ...interface{}) {
logger.Print(args...)
}
// Printf prints to the logger. Arguments are handled in the manner of fmt.Printf.
func Printf(format string, args ...interface{}) {
logger.Printf(format, args...)
}
// Println prints to the logger. Arguments are handled in the manner of fmt.Println.
func Println(args ...interface{}) {
logger.Println(args...)
}
type glogger struct{}
func (g *glogger) Fatal(args ...interface{}) {
glog.Fatal(args...)
}
func (g *glogger) Fatalf(format string, args ...interface{}) {
glog.Fatalf(format, args...)
}
func (g *glogger) Fatalln(args ...interface{}) {
glog.Fatalln(args...)
}
func (g *glogger) Print(args ...interface{}) {
glog.Info(args...)
}
func (g *glogger) Printf(format string, args ...interface{}) {
glog.Infof(format, args...)
}
func (g *glogger) Println(args ...interface{}) {
glog.Infoln(args...)
}