logger.go

// Copyright 2021 HAProxy Technologies LLC
//
// 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 "os"

type Std interface {
	Print(args ...interface{})
	Trace(args ...interface{})
	Debug(args ...interface{})
	Info(args ...interface{})
	Warning(args ...interface{})
	Error(args ...interface{})
	Fatal(args ...interface{})
	Panic(args ...interface{})
}

type Format interface {
	Printf(format string, args ...interface{})
	Tracef(format string, args ...interface{})
	Debugf(format string, args ...interface{})
	Infof(format string, args ...interface{})
	Warningf(format string, args ...interface{})
	Errorf(format string, args ...interface{})
	Fatalf(format string, args ...interface{})
	Panicf(format string, args ...interface{})
}

type Logger interface {
	Std
	Format
}

func New(logger ...Logger) Logger { //nolint:ireturn
	if len(logger) == 1 {
		log := &gologger{
			logger:   logger[0],
			exitFunc: os.Exit,
		}

		return log
	}
	logs := &gologgers{
		loggers:  logger,
		exitFunc: os.Exit,
	}

	return logs
}