lease

type Lease struct {
	// Object is the object over which lease is to be taken
	Object interface{}
	// leaseKey is lease key on object
	LeaseKey string
	// oecs is the openebs clientset
	Oecs clientset.Interface
	// kubeclientset is a standard kubernetes clientset
	Kubeclientset kubernetes.Interface
}

type LeaseContract struct {
	// Holder is the namespace/name of the pod who acquires the lease
	Holder string `json:"holder"`
	// LeaderTransition is the count of lease that has been taken on the object
	// in its lifetime.
	// e.g. One of the pod takes a lease on the object and release and then some other
	// pod (or even the same pod ) takes a lease again on the object its leaderTransition
	// value is 1.
	// If an object has leaderTranisiton value equal to 'n' that means it was leased
	// 'n+1' times in its lifetime by distinct, same or some distinct and some same pods.
	LeaderTransition int `json:"leaderTransition"`
}

type Leaser interface {
	// Hold will try to get a lease, in case of failure it will return error
	Hold() (interface{}, error)
	// Update will update the lease value on the object
	Update(leaseValue string) (interface{}, error)
	// Release will remove the acquired lease on the object
	Release()
}