90 lines
2.4 KiB
Go
90 lines
2.4 KiB
Go
package main
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import (
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"io"
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stdlog "log"
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"os"
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"strings"
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"time"
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"github.com/natefinch/lumberjack"
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"github.com/rs/zerolog"
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"github.com/rs/zerolog/log"
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"github.com/sirupsen/logrus"
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"github.com/traefik/traefik/v3/pkg/config/static"
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"github.com/traefik/traefik/v3/pkg/logs"
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)
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func init() {
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// hide the first logs before the setup of the logger.
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zerolog.SetGlobalLevel(zerolog.ErrorLevel)
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}
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func setupLogger(staticConfiguration *static.Configuration) {
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// configure log format
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w := getLogWriter(staticConfiguration)
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// configure log level
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logLevel := getLogLevel(staticConfiguration)
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// create logger
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logCtx := zerolog.New(w).With().Timestamp()
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if logLevel <= zerolog.DebugLevel {
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logCtx = logCtx.Caller()
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}
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log.Logger = logCtx.Logger().Level(logLevel)
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zerolog.DefaultContextLogger = &log.Logger
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zerolog.SetGlobalLevel(logLevel)
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// Global logrus replacement (related to lib like go-rancher-metadata, docker, etc.)
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logrus.StandardLogger().Out = logs.NoLevel(log.Logger, zerolog.DebugLevel)
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// configure default standard log.
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stdlog.SetFlags(stdlog.Lshortfile | stdlog.LstdFlags)
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stdlog.SetOutput(logs.NoLevel(log.Logger, zerolog.DebugLevel))
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}
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func getLogWriter(staticConfiguration *static.Configuration) io.Writer {
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var w io.Writer = os.Stderr
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if staticConfiguration.Log != nil && len(staticConfiguration.Log.FilePath) > 0 {
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_, _ = os.Create(staticConfiguration.Log.FilePath)
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w = &lumberjack.Logger{
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Filename: staticConfiguration.Log.FilePath,
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MaxSize: staticConfiguration.Log.MaxSize,
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MaxBackups: staticConfiguration.Log.MaxBackups,
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MaxAge: staticConfiguration.Log.MaxAge,
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Compress: true,
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}
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}
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if staticConfiguration.Log == nil || staticConfiguration.Log.Format != "json" {
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w = zerolog.ConsoleWriter{
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Out: w,
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TimeFormat: time.RFC3339,
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NoColor: staticConfiguration.Log != nil && (staticConfiguration.Log.NoColor || len(staticConfiguration.Log.FilePath) > 0),
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}
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}
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return w
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}
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func getLogLevel(staticConfiguration *static.Configuration) zerolog.Level {
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levelStr := "error"
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if staticConfiguration.Log != nil && staticConfiguration.Log.Level != "" {
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levelStr = strings.ToLower(staticConfiguration.Log.Level)
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}
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logLevel, err := zerolog.ParseLevel(strings.ToLower(levelStr))
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if err != nil {
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log.Error().Err(err).
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Str("logLevel", levelStr).
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Msg("Unspecified or invalid log level, setting the level to default (ERROR)...")
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logLevel = zerolog.ErrorLevel
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}
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return logLevel
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}
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