Copyright (C) 2014-2019, Matt Butcher and Matt Farina

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is

|FILE_MOUNTED_CERTS|completely disable CA path, exclusively use certs mounted into the pod with set certificate file locations|
|CREDENTIAL_FETCHER_TYPE|allows using custom credential fetcher, for VMs with existing identity|
|CREDENTIAL_IDENTITY_PROVIDER|just used to control the audience for VMs with existing identity|

Chun Li <******@****.***> 1707418344 +0800

Ben Leggett <******@****.***> 1706861920 -0500

	for _, path := range paths {
		if !file.Exists(path) {
			log.Infof("file watcher skipping watch on non-existent path: %v", path)
			continue
		}
		if err := watcher.Add(path); err != nil {
			if closeErr := watcher.Close(); closeErr != nil {
				err = fmt.Errorf("%s: %w", closeErr.Error(), err)
			}
			return nil, err
		}
	}

	return &Watcher{
		watcher: watcher,
		Events:  fileModified,