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36 package gr.grnet.aquarium.store.memory
38 import com.ckkloverdos.props.Props
39 import com.ckkloverdos.maybe.Just
40 import gr.grnet.aquarium.store._
41 import scala.collection.JavaConversions._
42 import collection.mutable.ConcurrentMap
43 import java.util.concurrent.ConcurrentHashMap
44 import gr.grnet.aquarium.Configurable
45 import gr.grnet.aquarium.event.model.PolicyEntry
46 import gr.grnet.aquarium.event.model.im.{StdIMEvent, IMEventModel}
47 import org.bson.types.ObjectId
48 import gr.grnet.aquarium.event.model.resource.{StdResourceEvent, ResourceEventModel}
49 import gr.grnet.aquarium.computation.state.UserState
50 import gr.grnet.aquarium.util.Tags
51 import gr.grnet.aquarium.computation.BillingMonthInfo
54 * An implementation of various stores that persists parts in memory.
56 * This is just for testing purposes.
58 * @author Christos KK Loverdos <loverdos@gmail.com>
59 * @author Georgios Gousios <gousiosg@gmail.com>
62 class MemStoreProvider extends UserStateStore
63 with Configurable with PolicyStore
64 with ResourceEventStore with IMEventStore
67 override type IMEvent = MemIMEvent
68 override type ResourceEvent = MemResourceEvent
70 private[this] var _userStates = List[UserState]()
71 private[this] var _policyEntries = List[PolicyEntry]()
72 private[this] var _resourceEvents = List[ResourceEvent]()
74 private[this] val imEventById: ConcurrentMap[String, MemIMEvent] = new ConcurrentHashMap[String, MemIMEvent]()
77 def propertyPrefix = None
79 def configure(props: Props) = {
82 override def toString = {
84 Tags.UserStateTag -> _userStates.size,
85 Tags.ResourceEventTag -> _resourceEvents.size,
86 Tags.IMEventTag -> imEventById.size,
87 "PolicyEntry" -> _policyEntries.size
90 "MemStoreProvider(%s)" format map
94 def userStateStore = this
96 def resourceEventStore = this
98 def imEventStore = this
100 def policyStore = this
105 def insertUserState(userState: UserState): UserState = {
106 _userStates = userState.copy(_id = new ObjectId().toString) :: _userStates
110 def findUserStateByUserID(userID: String) = {
111 _userStates.find(_.userID == userID)
114 def findLatestUserStateForFullMonthBilling(userID: String, bmi: BillingMonthInfo): Option[UserState] = {
115 val goodOnes = _userStates.filter(_.theFullBillingMonth.isDefined).filter { userState ⇒
116 val f1 = userState.userID == userID
117 val f2 = userState.isFullBillingMonthState
118 val bm = userState.theFullBillingMonth.get
126 us1.occurredMillis > us2.occurredMillis
136 //+ ResourceEventStore
137 def createResourceEventFromOther(event: ResourceEventModel): ResourceEvent = {
138 if(event.isInstanceOf[MemResourceEvent]) event.asInstanceOf[MemResourceEvent]
141 new StdResourceEvent(
156 override def clearResourceEvents() = {
157 _resourceEvents = Nil
160 def pingResourceEventStore(): Unit = {
161 // We are always live and kicking...
164 def insertResourceEvent(event: ResourceEventModel) = {
165 val localEvent = createResourceEventFromOther(event)
166 _resourceEvents ::= localEvent
170 def findResourceEventByID(id: String) = {
171 _resourceEvents.find(ev ⇒ ev.id == id)
174 def findResourceEventsByUserID(userId: String)
175 (sortWith: Option[(ResourceEvent, ResourceEvent) => Boolean]): List[ResourceEvent] = {
176 val byUserId = _resourceEvents.filter(_.userID == userId).toArray
177 val sorted = sortWith match {
179 byUserId.sortWith(sorter)
187 def countOutOfSyncResourceEventsForBillingPeriod(userID: String, startMillis: Long, stopMillis: Long): Long = {
188 _resourceEvents.filter { case ev ⇒
189 ev.userID == userID &&
190 // out of sync events are those that were received in the billing month but occurred in previous (or next?)
192 ev.isOutOfSyncForBillingPeriod(startMillis, stopMillis)
195 //- ResourceEventStore
197 def foreachResourceEventOccurredInPeriod(
201 )(f: ResourceEvent ⇒ Unit): Unit = {
202 _resourceEvents.filter { case ev ⇒
203 ev.userID == userID &&
204 ev.isOccurredWithinMillis(startMillis, stopMillis)
209 def createIMEventFromJson(json: String) = {
210 StdIMEvent.fromJsonString(json)
213 def createIMEventFromOther(event: IMEventModel) = {
214 StdIMEvent.fromOther(event)
217 def pingIMEventStore(): Unit = {
221 def insertIMEvent(event: IMEventModel) = {
222 val localEvent = createIMEventFromOther(event)
223 imEventById += (event.id -> localEvent)
227 def findIMEventByID(id: String) = imEventById.get(id)
231 * Find the `CREATE` even for the given user. Note that there must be only one such event.
233 def findCreateIMEventByUserID(userID: String): Option[IMEvent] = {
234 imEventById.valuesIterator.filter { e ⇒
235 e.userID == userID && e.isCreateUser
236 }.toList.sortWith { case (e1, e2) ⇒
237 e1.occurredMillis < e2.occurredMillis
241 def findLatestIMEventByUserID(userID: String): Option[IMEvent] = {
242 imEventById.valuesIterator.filter(_.userID == userID).toList.sortWith {
244 us1.occurredMillis > us2.occurredMillis
249 * Scans events for the given user, sorted by `occurredMillis` in ascending order and runs them through
250 * the given function `f`.
252 * Any exception is propagated to the caller. The underlying DB resources are properly disposed in any case.
254 def foreachIMEventInOccurrenceOrder(userID: String)(f: (IMEvent) => Unit) = {
255 imEventById.valuesIterator.filter(_.userID == userID).toSeq.sortWith {
256 case (ev1, ev2) ⇒ ev1.occurredMillis <= ev2.occurredMillis
261 def loadPolicyEntriesAfter(after: Long) =
262 _policyEntries.filter(p => p.validFrom > after)
263 .sortWith((a,b) => a.validFrom < b.validFrom)
265 def storePolicyEntry(policy: PolicyEntry) = {_policyEntries = policy :: _policyEntries; Just(RecordID(policy.id))}
267 def updatePolicyEntry(policy: PolicyEntry) =
268 _policyEntries = _policyEntries.foldLeft(List[PolicyEntry]()){
270 if (p.id == policy.id)
276 def findPolicyEntry(id: String) = {
277 _policyEntries.find(p => p.id == id)
281 object MemStoreProvider {
282 final def isLocalIMEvent(event: IMEventModel) = event match {
283 case _: MemIMEvent ⇒ true