package service
package user
-import java.util.Date
-import com.ckkloverdos.maybe.{Failed, NoVal, Just}
-
import gr.grnet.aquarium.actor._
-import gr.grnet.aquarium.Configurator
-import gr.grnet.aquarium.user._
-
-import gr.grnet.aquarium.util.Loggable
-import gr.grnet.aquarium.util.date.TimeHelpers
-import gr.grnet.aquarium.logic.accounting.RoleAgreements
-import gr.grnet.aquarium.messaging.AkkaAMQP
-import gr.grnet.aquarium.actor.message.config.user.UserActorInitWithUserId
-import gr.grnet.aquarium.actor.message.service.dispatcher._
-import message.config.{ActorProviderConfigured, AquariumPropertiesLoaded}
-import gr.grnet.aquarium.events.{WalletEntry, UserEvent}
+import akka.config.Supervision.Temporary
+import gr.grnet.aquarium.Aquarium
+import gr.grnet.aquarium.actor.message.event.{ProcessResourceEvent, ProcessIMEvent}
+import gr.grnet.aquarium.actor.message.{GetUserStateRequest, GetUserBalanceRequest}
+import gr.grnet.aquarium.computation.data.IMStateSnapshot
+import gr.grnet.aquarium.event.model.im.IMEventModel
+import gr.grnet.aquarium.actor.message.config.{InitializeUserState, ActorProviderConfigured, AquariumPropertiesLoaded}
/**
*
* @author Christos KK Loverdos <loverdos@gmail.com>
*/
-class UserActor extends AquariumActor
-with AkkaAMQP
-with ReflectiveAquariumActor
-with Loggable {
- @volatile
- private[this] var _userId: String = _
- @volatile
- private[this] var _userState: UserState = _
- @volatile
- private[this] var _timestampTheshold: Long = _
+class UserActor extends ReflectiveRoleableActor {
+ private[this] var _imState: IMStateSnapshot = _
+// private[this] var _userState: UserState = _
+// private[this] var _newUserState: NewUserState = _
- private[this] lazy val messenger = producer("aquarium") // FIXME: Read this from configuration
-
- def role = UserActorRole
+ self.lifeCycle = Temporary
- private[this] def _configurator: Configurator = Configurator.MasterConfigurator
+// private[this] def _userID = this._newUserState.userID
+ private[this] def _shutmedown(): Unit = {
+// if(_haveUserState) {
+// UserActorCache.invalidate(_userID)
+// }
- /**
- * Replay the event log for all events that affect the user state.
- */
- def rebuildState(from: Long, to: Long): Unit = {
- val start = System.currentTimeMillis()
- if(_userState == null)
- createBlankState
-
- //Rebuild state from user events
- val usersDB = _configurator.storeProvider.userEventStore
- val userEvents = usersDB.findUserEventsByUserId(_userId)
- val numUserEvents = userEvents.size
- _userState = replayUserEvents(_userState, userEvents, from, to)
-
- //Rebuild state from resource events
- val eventsDB = _configurator.storeProvider.resourceEventStore
- val resourceEvents = eventsDB.findResourceEventsByUserIdAfterTimestamp(_userId, from)
- val numResourceEvents = resourceEvents.size
- // _userState = replayResourceEvents(_userState, resourceEvents, from, to)
-
- //Rebuild state from wallet entries
- val wallet = _configurator.storeProvider.walletEntryStore
- val walletEnties = wallet.findWalletEntriesAfter(_userId, new Date(from))
- val numWalletEntries = walletEnties.size
- _userState = replayWalletEntries(_userState, walletEnties, from, to)
-
- INFO(("Rebuilt state from %d events (%d user events, " +
- "%d resource events, %d wallet entries) in %d msec").format(
- numUserEvents + numResourceEvents + numWalletEntries,
- numUserEvents, numResourceEvents, numWalletEntries,
- System.currentTimeMillis() - start))
+ self.stop()
}
- /**
- * Create an empty state for a user
- */
- def createBlankState = {
- this._userState = DefaultUserStateComputations.createInitialUserState(this._userId, 0L, true, 0.0)
- }
+ override protected def onThrowable(t: Throwable, message: AnyRef) = {
+ logChainOfCauses(t)
+// ERROR(t, "Terminating due to: %s(%s)", shortClassNameOf(t), t.getMessage)
- /**
- * Replay user events on the provided user state
- */
- def replayUserEvents(initState: UserState, events: List[UserEvent],
- from: Long, to: Long): UserState = {
- initState
+ _shutmedown()
}
+ def role = UserActorRole
- /**
- * Replay wallet entries on the provided user state
- */
- def replayWalletEntries(initState: UserState, events: List[WalletEntry],
- from: Long, to: Long): UserState = {
- initState
- }
+ private[this] def aquarium: Aquarium = Aquarium.Instance
- /**
- * Persist current user state
- */
- private[this] def saveUserState(): Unit = {
- _configurator.storeProvider.userStateStore.storeUserState(this._userState) match {
- case Just(record) => record
- case NoVal => ERROR("Unknown error saving state")
- case Failed(e) =>
- ERROR("Saving state failed: %s".format(e));
- }
- }
+ private[this] def _timestampTheshold =
+ aquarium.props.getLong(Aquarium.Keys.user_state_timestamp_threshold).getOr(10000)
- def onAquariumPropertiesLoaded(event: AquariumPropertiesLoaded): Unit = {
- this._timestampTheshold = event.props.getLong(Configurator.Keys.user_state_timestamp_threshold).getOr(10000)
- INFO("Setup my timestampTheshold = %s", this._timestampTheshold)
- }
- def onUserActorInitWithUserId(event: UserActorInitWithUserId): Unit = {
- this._userId = event.userId
- DEBUG("Actor starting, loading state")
- }
+// private[this] def _haveUserState = {
+// this._newUserState ne null
+// }
- def onProcessResourceEvent(event: ProcessResourceEvent): Unit = {
- val resourceEvent = event.rce
- if(resourceEvent.userID != this._userId) {
- ERROR("Received %s but my userId = %s".format(event, this._userId))
- } else {
- //ensureUserState()
- // calcWalletEntries()
- //processResourceEvent(resourceEvent, true)
- }
+ private[this] def _haveIMState = {
+ this._imState ne null
}
- private[this] def processCreateUser(event: UserEvent): Unit = {
- val userId = event.userID
- DEBUG("Creating user from state %s", event)
- val usersDB = _configurator.storeProvider.userStateStore
- usersDB.findUserStateByUserId(userId) match {
- case Just(userState) ⇒
- WARN("User already created, state = %s".format(userState))
- case failed@Failed(e) ⇒
- ERROR("[%s] %s", e.getClass.getName, e.getMessage)
- case NoVal ⇒
- val agreement = RoleAgreements.agreementForRole(event.role)
- DEBUG("User %s assigned agreement %s".format(userId, agreement.name))
-
- this._userState = DefaultUserStateComputations.createInitialUserState(
- userId,
- event.occurredMillis,
- event.isActive, 0.0, List(event.role), agreement.name)
- saveUserState
- DEBUG("Created and stored %s", this._userState)
- }
+ def onAquariumPropertiesLoaded(event: AquariumPropertiesLoaded): Unit = {
}
- private[this] def processModifyUser(event: UserEvent): Unit = {
- val now = TimeHelpers.nowMillis
- val newActive = ActiveStateSnapshot(event.isStateActive, now)
+ def onActorProviderConfigured(event: ActorProviderConfigured): Unit = {
+ }
- DEBUG("New active status = %s".format(newActive))
+ private[this] def reloadIMState(userID: String): Unit = {
+ val store = aquarium.imEventStore
+ store.replayIMEventsInOccurrenceOrder(userID) { imEvent ⇒
+ logger.debug("Replaying %s".format(imEvent))
- this._userState = this._userState.copy(activeStateSnapshot = newActive)
- }
+ val newState = this._imState match {
+ case null ⇒
+ IMStateSnapshot.initial(imEvent)
- def onProcessUserEvent(event: ProcessUserEvent): Unit = {
- val userEvent = event.ue
- if(userEvent.userID != this._userId) {
- ERROR("Received %s but my userId = %s".format(userEvent, this._userId))
- } else {
- if(userEvent.isCreateUser) {
- processCreateUser(userEvent)
- } else if(userEvent.isModifyUser) {
- processModifyUser(userEvent)
+ case currentState ⇒
+ currentState.copyWithEvent(imEvent)
}
+
+ this._imState = newState
}
+
+ logger.debug("Recomputed %s".format(this._imState))
}
- def onRequestUserBalance(event: RequestUserBalance): Unit = {
- val userId = event.userId
- val timestamp = event.timestamp
+ def onInitializeUserState(event: InitializeUserState): Unit = {
+ logger.debug("Got %s".format(event))
+ reloadIMState(event.userID)
+ }
- if(System.currentTimeMillis() - _userState.newestSnapshotTime > 60 * 1000) {
- // calcWalletEntries()
- }
- self reply UserResponseGetBalance(userId, _userState.creditsSnapshot.creditAmount)
+ private[this] def _getAgreementNameForNewUser(imEvent: IMEventModel): String = {
+ // FIXME: Implement based on the role
+ "default"
}
- def onUserRequestGetState(event: UserRequestGetState): Unit = {
- val userId = event.userId
- if(this._userId != userId) {
- ERROR("Received %s but my userId = %s".format(event, this._userId))
- // TODO: throw an exception here
+ /**
+ * Process [[gr.grnet.aquarium.event.model.im.IMEventModel]]s.
+ * When this method is called, we assume that all proper checks have been made and it
+ * is OK to proceed with the event processing.
+ */
+ def onProcessIMEvent(processEvent: ProcessIMEvent): Unit = {
+ val imEvent = processEvent.imEvent
+ val hadIMState = _haveIMState
+
+ if(hadIMState) {
+ if(this._imState.latestIMEvent.id == imEvent.id) {
+ // This happens when the actor is brought to life, then immediately initialized, and then
+ // sent the first IM event. But from the initialization procedure, this IM event will have
+ // already been loaded from DB!
+ logger.debug("Ignoring first %s after birth".format(imEvent.toDebugString))
+ return
+ }
+
+ this._imState = this._imState.copyWithEvent(imEvent)
} else {
- // FIXME: implement
- ERROR("FIXME: Should have properly computed the user state")
- // ensureUserState()
- self reply UserResponseGetState(userId, this._userState)
+ this._imState = IMStateSnapshot.initial(imEvent)
}
- }
-
- def onActorProviderConfigured(event: ActorProviderConfigured): Unit = {
- }
- override def postStop {
- DEBUG("Stopping, saving state")
- saveUserState
+// DEBUG("%s %s = %s", if(hadIMState) "Update" else "Set", shortClassNameOf(this._imState), this._imState)
}
- override def preRestart(reason: Throwable) {
- DEBUG("Actor failed, restarting")
+ def onGetUserBalanceRequest(event: GetUserBalanceRequest): Unit = {
+ val userId = event.userID
+ // FIXME: Implement
+// self reply GetUserBalanceResponse(userId, Right(_userState.creditsSnapshot.creditAmount))
}
- override def postRestart(reason: Throwable) {
- DEBUG("Actor restarted succesfully")
+ def onGetUserStateRequest(event: GetUserStateRequest): Unit = {
+ val userId = event.userID
+ // FIXME: Implement
+// self reply GetUserStateResponse(userId, Right(this._userState))
}
- private[this] def DEBUG(fmt: String, args: Any*) =
- logger.debug("UserActor[%s]: %s".format(_userId, fmt.format(args: _*)))
-
- private[this] def INFO(fmt: String, args: Any*) =
- logger.info("UserActor[%s]: %s".format(_userId, fmt.format(args: _*)))
-
- private[this] def WARN(fmt: String, args: Any*) =
- logger.warn("UserActor[%s]: %s".format(_userId, fmt.format(args: _*)))
-
- private[this] def ERROR(fmt: String, args: Any*) =
- logger.error("UserActor[%s]: %s".format(_userId, fmt.format(args: _*)))
+ def onProcessResourceEvent(event: ProcessResourceEvent): Unit = {
+ val rcEvent = event.rcEvent
+
+ logger.info("Got\n{}", rcEvent.toJsonString)
+ }
+
+
+// private[this] def D_userID = {
+// if(this._newUserState eq null)
+// if(this._imState eq null)
+// "<NOT INITIALIZED>"
+// else
+// this._imState.latestIMEvent.userID
+// else
+// this._newUserState.userID
+// }
+//
+// private[this] def DEBUG(fmt: String, args: Any*) =
+// logger.debug("UserActor[%s]: %s".format(D_userID, fmt.format(args: _*)))
+//
+// private[this] def INFO(fmt: String, args: Any*) =
+// logger.info("UserActor[%s]: %s".format(D_userID, fmt.format(args: _*)))
+//
+// private[this] def WARN(fmt: String, args: Any*) =
+// logger.warn("UserActor[%s]: %s".format(D_userID, fmt.format(args: _*)))
+//
+// private[this] def ERROR(fmt: String, args: Any*) =
+// logger.error("UserActor[%s]: %s".format(D_userID, fmt.format(args: _*)))
+//
+// private[this] def ERROR(t: Throwable, fmt: String, args: Any*) =
+// logger.error("UserActor[%s]: %s".format(D_userID, fmt.format(args: _*)), t)
}
projects / aquarium / blobdiff