locksmith

type LockSmith struct {
	Pid                 int            // Node ID
	Ring                []int          // Ring structure of nodes
	Coordinator         int            // Indicate the coordinator node number
	RpcMap              map[int]string // Map node ID to their receiving address
	HeartBeatTable      map[int]bool
	VirtualNodeLocation []int
	VirtualNodeMap      map[int]string
	RequestQueue        []int // Request queue for granting lock for accessing user.json, an array of nodeID
}