traefik/vendor/github.com/uber/jaeger-client-go/log/logger.go
2018-01-10 17:48:04 +01:00

57 lines
2.2 KiB
Go

// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package log
import "log"
// Logger provides an abstract interface for logging from Reporters.
// Applications can provide their own implementation of this interface to adapt
// reporters logging to whatever logging library they prefer (stdlib log,
// logrus, go-logging, etc).
type Logger interface {
// Error logs a message at error priority
Error(msg string)
// Infof logs a message at info priority
Infof(msg string, args ...interface{})
}
// StdLogger is implementation of the Logger interface that delegates to default `log` package
var StdLogger = &stdLogger{}
type stdLogger struct{}
func (l *stdLogger) Error(msg string) {
log.Printf("ERROR: %s", msg)
}
// Infof logs a message at info priority
func (l *stdLogger) Infof(msg string, args ...interface{}) {
log.Printf(msg, args...)
}
// NullLogger is implementation of the Logger interface that delegates to default `log` package
var NullLogger = &nullLogger{}
type nullLogger struct{}
func (l *nullLogger) Error(msg string) {}
func (l *nullLogger) Infof(msg string, args ...interface{}) {}