86 lines
2.2 KiB
Go
86 lines
2.2 KiB
Go
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/*
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* Copyright 2018 Dgraph Labs, Inc. and Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package badger
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import (
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"log"
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"os"
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)
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// Logger is implemented by any logging system that is used for standard logs.
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type Logger interface {
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Errorf(string, ...interface{})
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Warningf(string, ...interface{})
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Infof(string, ...interface{})
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Debugf(string, ...interface{})
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}
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// Errorf logs an ERROR log message to the logger specified in opts or to the
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// global logger if no logger is specified in opts.
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func (opt *Options) Errorf(format string, v ...interface{}) {
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if opt.Logger == nil {
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return
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}
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opt.Logger.Errorf(format, v...)
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}
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// Infof logs an INFO message to the logger specified in opts.
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func (opt *Options) Infof(format string, v ...interface{}) {
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if opt.Logger == nil {
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return
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}
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opt.Logger.Infof(format, v...)
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}
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// Warningf logs a WARNING message to the logger specified in opts.
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func (opt *Options) Warningf(format string, v ...interface{}) {
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if opt.Logger == nil {
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return
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}
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opt.Logger.Warningf(format, v...)
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}
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// Debugf logs a DEBUG message to the logger specified in opts.
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func (opt *Options) Debugf(format string, v ...interface{}) {
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if opt.Logger == nil {
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return
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}
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opt.Logger.Debugf(format, v...)
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}
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type defaultLog struct {
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*log.Logger
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}
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var defaultLogger = &defaultLog{Logger: log.New(os.Stderr, "badger ", log.LstdFlags)}
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func (l *defaultLog) Errorf(f string, v ...interface{}) {
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l.Printf("ERROR: "+f, v...)
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}
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func (l *defaultLog) Warningf(f string, v ...interface{}) {
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l.Printf("WARNING: "+f, v...)
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}
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func (l *defaultLog) Infof(f string, v ...interface{}) {
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l.Printf("INFO: "+f, v...)
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}
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func (l *defaultLog) Debugf(f string, v ...interface{}) {
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l.Printf("DEBUG: "+f, v...)
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}
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