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logger.go
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logger.go
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// Copyright 2020 Jaume Martin
// 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.
package logger
import (
"strings"
"github.com/pkg/errors"
"go.uber.org/zap"
)
// Log is the global logger for Mole
var Log *zap.SugaredLogger
// Mole is the logger for matches
var Mole *zap.SugaredLogger
// New returns a new logger based on the configuration provided
func New() (err error) {
var config *Config
config, err = InitConfig()
if err != nil {
return errors.Wrap(err, LoggerConfigInitFailedMsg)
}
err = initAppLogger(config)
if err != nil {
return errors.Wrap(err, AppLoggerInitFailedMsg)
}
err = initMoleLogger(config)
if err != nil {
return errors.Wrap(err, MoleLoggerInitFailedMsg)
}
return nil
}
func initAppLogger(config *Config) error {
logConfig := zap.NewProductionConfig()
// TODO: Add this options at the configuration level
logConfig.DisableCaller = true
logConfig.DisableStacktrace = true
logConfig.Development = false
// INPROVE: Add the posibility to add extra outputs, like stdout and syslog
// and even omit stdout
if !strings.Contains(config.LogTo, "stdout") {
logConfig.OutputPaths = append(logConfig.OutputPaths, config.LogTo)
}
switch config.LogLevel {
case "debug":
logConfig.Level.SetLevel(zap.DebugLevel)
case "warning":
logConfig.Level.SetLevel(zap.WarnLevel)
case "error":
logConfig.Level.SetLevel(zap.ErrorLevel)
case "info":
fallthrough
default:
logConfig.Level.SetLevel(zap.InfoLevel)
}
l, err := logConfig.Build()
if err != nil {
return ErrBuildingZapFieldsFailed
}
Log = l.Sugar()
defer Log.Sync()
return nil
}
func initMoleLogger(config *Config) error {
logConfig := zap.NewProductionConfig()
// TODO: Add this options at the configuration level
logConfig.DisableCaller = true
logConfig.DisableStacktrace = true
logConfig.Development = false
logConfig.OutputPaths = []string{config.MoleLogger.To}
lr, err := logConfig.Build()
if err != nil {
return ErrBuildingZapFieldsFailed
}
Mole = lr.Sugar()
defer Mole.Sync()
return nil
}