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36 package gr.grnet.aquarium.store
38 import gr.grnet.aquarium.user.UserState
39 import com.ckkloverdos.maybe.Maybe
42 * A store for user state snapshots.
44 * This is used to hold snapshots of [[gr.grnet.aquarium.user.UserState]]
46 * @author Christos KK Loverdos <loverdos@gmail.com>
49 trait UserStateStore {
54 def insertUserState(userState: UserState): UserState
57 * Find a state by user ID
59 def findUserStateByUserID(userID: String): Option[UserState]
61 def findLatestUserStateByUserID(userID: String): Option[UserState]
64 * Find the most up-to-date user state for the particular billing period.
66 def findLatestUserStateForEndOfBillingMonth(userId: String, yearOfBillingMonth: Int, billingMonth: Int): Option[UserState]
69 * Delete a state for a user
71 def deleteUserState(userId: String): Unit