policy

type EtcdRW struct {
	Path   string
	Client etcd.Client
	Kapi   etcd.KeysAPI
}

type FileRW struct {
	Path string
}

type Policy struct {
	PolicyFile string // local file or etcd@http://<ip>:<port/path/to/file
	User       string // e.g., alice
	Namespace  string // e.g., alice_namespace
	Privileged bool   // e.g., false
	ReadOnly   bool   // e.g., false
	ReqType    string // e.g., add, delete
	RW         ReaderWriter
}

type ReaderWriter interface {
	Read() (string, error)
	Write(content string) error
}