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logging.go
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logging.go
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// Copyright © 2021 Weald Technology Trading.
// 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 util
import (
"fmt"
"strings"
"github.com/rs/zerolog"
zerologger "github.com/rs/zerolog/log"
"github.com/spf13/viper"
)
// LogLevel returns the best log level for the path.
func LogLevel(path string) zerolog.Level {
if path == "" {
return stringToLevel(viper.GetString("log-level"))
}
key := fmt.Sprintf("%s.log-level", path)
if viper.GetString(key) != "" {
return stringToLevel(viper.GetString(key))
}
// Lop off the child and try again.
lastPeriod := strings.LastIndex(path, ".")
if lastPeriod == -1 {
return LogLevel("")
}
return LogLevel(path[0:lastPeriod])
}
// stringtoLevel converts a string to a log level.
// It returns the user-supplied level by default.
func stringToLevel(input string) zerolog.Level {
switch strings.ToLower(input) {
case "none":
return zerolog.Disabled
case "trace":
return zerolog.TraceLevel
case "debug":
return zerolog.DebugLevel
case "warn", "warning":
return zerolog.WarnLevel
case "info", "information":
return zerolog.InfoLevel
case "err", "error":
return zerolog.ErrorLevel
case "fatal":
return zerolog.FatalLevel
default:
return zerologger.Logger.GetLevel()
}
}