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logging.go
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package logging
import (
"os"
"strings"
"github.com/pkg/errors"
"github.com/rs/zerolog"
"github.com/rs/zerolog/log"
"github.com/runabol/tork/conf"
)
func SetupLogging() error {
zerolog.TimeFieldFormat = zerolog.TimeFormatUnix
logLevel := strings.ToLower(conf.StringDefault("logging.level", "debug"))
// setup log level
switch logLevel {
case "debug":
zerolog.SetGlobalLevel(zerolog.DebugLevel)
case "info":
zerolog.SetGlobalLevel(zerolog.InfoLevel)
case "warn", "warning":
zerolog.SetGlobalLevel(zerolog.WarnLevel)
case "error":
zerolog.SetGlobalLevel(zerolog.ErrorLevel)
default:
return errors.Errorf("invalid logging level: %s", logLevel)
}
// setup log format (pretty / json)
logFormat := strings.ToLower(conf.StringDefault("logging.format", "pretty"))
switch logFormat {
case "pretty":
log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr})
case "json":
log.Logger = zerolog.New(os.Stderr).With().Timestamp().Logger()
default:
return errors.Errorf("invalid logging format: %s", logFormat)
}
return nil
}