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/*
* ============LICENSE_START=======================================================
* oom-certservice-k8s-external-provider
* ================================================================================
* Copyright (C) 2020 Nokia. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package leveledlogger
import (
"encoding/json"
"fmt"
"io/ioutil"
"log"
"github.com/go-logr/logr"
"go.uber.org/zap/zapcore"
"github.com/go-logr/zapr"
"go.uber.org/zap"
)
const (
WARNING = int(zapcore.WarnLevel) * -1
INFO = int(zapcore.InfoLevel) * -1
DEBUG = int(zapcore.DebugLevel) * -1
)
type Logger struct {
Log logr.Logger
ConfigFile string
}
var configFileName = "default"
var logLevel = "warn"
func SetConfigFileName(newName string) {
configFileName = newName
}
func SetLogLevel(level string) {
logLevel = level
}
func GetLogger() Logger {
var cfg zap.Config
if err := json.Unmarshal(getConfig(), &cfg); err != nil {
panic(err)
}
logger, err := cfg.Build()
if err != nil {
panic(err)
}
leveledLogger := Logger{
Log: zapr.NewLogger(logger),
}
return leveledLogger
}
func GetLoggerWithValues(keysAndValues ...interface{}) Logger {
leveledLogger := GetLogger()
leveledLogger.Log = leveledLogger.Log.WithValues(keysAndValues...)
return leveledLogger
}
func GetLoggerWithName(name string) Logger {
leveledLogger := GetLogger()
leveledLogger.Log = leveledLogger.Log.WithName(name)
return leveledLogger
}
func (logger *Logger) Error(err error, message string, keysAndValues ...interface{}) {
logger.Log.Error(err, message, keysAndValues...)
}
func (logger *Logger) Warning(message string, keysAndValues ...interface{}) {
logger.log(message, WARNING, keysAndValues...)
}
func (logger *Logger) Info(message string, keysAndValues ...interface{}) {
logger.log(message, INFO, keysAndValues...)
}
func (logger *Logger) Debug(message string, keysAndValues ...interface{}) {
logger.log(message, DEBUG, keysAndValues...)
}
func (logger *Logger) log(message string, lvl int, keysAndValues ...interface{}) {
logger.Log.V(lvl).Info(message, keysAndValues...)
}
func getDefaultConfig() []byte {
return []byte(fmt.Sprintf(`{
"level": "%s",
"encoding": "console",
"outputPaths": ["stdout"],
"encoderConfig": {
"timeKey": "timeKey",
"messageKey": "message",
"levelKey": "level",
"nameKey": "name",
"levelEncoder": "capital",
"timeEncoder": "iso8601"
}
}`, logLevel))
}
func getConfig() []byte {
var config = []byte{}
if configFileName == "default" {
config = getDefaultConfig()
} else {
config = readFile(configFileName)
}
return config
}
func readFile(filename string) []byte {
certRequest, err := ioutil.ReadFile(filename)
if err != nil {
log.Fatal(err)
}
return certRequest
}
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