mirror of https://github.com/certusone/vouch.git
72 lines
2.0 KiB
Go
72 lines
2.0 KiB
Go
// Copyright © 2020 Attestant Limited.
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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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package main
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import (
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"os"
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"strings"
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"github.com/pkg/errors"
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"github.com/rs/zerolog"
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zerologger "github.com/rs/zerolog/log"
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"github.com/spf13/viper"
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)
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// log.
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var log zerolog.Logger
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// initLogging initialises logging.
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func initLogging() error {
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// We set the global logging level to trace, because if the global log level is higher than the
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// local log level the local level is ignored. It is then overridden for each module.
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zerolog.SetGlobalLevel(zerolog.TraceLevel)
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// Change the output file.
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if viper.GetString("log-file") != "" {
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f, err := os.OpenFile(resolvePath(viper.GetString("log-file")), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0600)
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if err != nil {
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return errors.Wrap(err, "failed to open log file")
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}
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zerologger.Logger = zerologger.Logger.Output(f)
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}
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// Set the local logger from the global logger.
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log = zerologger.Logger.With().Logger().Level(logLevel(viper.GetString("log-level")))
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return nil
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}
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// logLevel converts a string to a log level.
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// It returns the user-supplied level by default.
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func logLevel(input string) zerolog.Level {
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switch strings.ToLower(input) {
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case "none":
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return zerolog.Disabled
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case "trace":
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return zerolog.TraceLevel
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case "debug":
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return zerolog.DebugLevel
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case "warn", "warning":
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return zerolog.WarnLevel
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case "info", "information":
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return zerolog.InfoLevel
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case "err", "error":
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return zerolog.ErrorLevel
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case "fatal":
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return zerolog.FatalLevel
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default:
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return log.GetLevel()
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}
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}
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