// Copyright 2021 Antrea Authors
//
// 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 logdir

import (
	"flag"
	"os"
)

// GetLogDir returns the path to the directory where Antrea logs are written.
// It will look for the value of the log_dir command-line flag, or default to a
// well-known OS-dependent location.
func GetLogDir() string {
	logDirFlag := flag.CommandLine.Lookup("log_dir")
	var logDir string
	if logDirFlag == nil {
		logDir = antreaWellKnownLogDir
	} else if len(logDirFlag.Value.String()) == 0 {
		// default log directory used by klog
		logDir = os.TempDir()
	} else {
		logDir = logDirFlag.Value.String()
	}
	return logDir
}
