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36 package gr.grnet.aquarium.store.memory
38 import com.ckkloverdos.props.Props
39 import com.ckkloverdos.maybe.{NoVal, 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.uid.ConcurrentVMLocalUIDGenerator
45 import gr.grnet.aquarium.Configurable
46 import gr.grnet.aquarium.event.model.PolicyEntry
47 import gr.grnet.aquarium.event.model.im.{StdIMEvent, IMEventModel}
48 import org.bson.types.ObjectId
49 import gr.grnet.aquarium.event.model.resource.{StdResourceEvent, ResourceEventModel}
50 import gr.grnet.aquarium.computation.UserState
51 import gr.grnet.aquarium.util.Tags
54 * An implementation of various stores that persists data 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 MemStore 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 "MemStore(%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 findLatestUserStateForEndOfBillingMonth(userID: String,
115 yearOfBillingMonth: Int,
116 billingMonth: Int): Option[UserState] = {
117 val goodOnes = _userStates.filter { userState ⇒
118 val f1 = userState.userID == userID
119 val f2 = userState.isFullBillingMonthState
120 val bm = userState.theFullBillingMonth
121 val f3 = (bm ne null) && {
122 bm.year == yearOfBillingMonth && bm.month == billingMonth
130 us1.occurredMillis > us2.occurredMillis
139 def deleteUserState(userId: String) {
140 _userStates.filterNot(_.userID == userId)
144 //+ ResourceEventStore
145 def createResourceEventFromOther(event: ResourceEventModel): ResourceEvent = {
146 if(event.isInstanceOf[MemResourceEvent]) event.asInstanceOf[MemResourceEvent]
149 new StdResourceEvent(
164 override def clearResourceEvents() = {
165 _resourceEvents = Nil
168 def pingResourceEventStore(): Unit = {
169 // We are always live and kicking...
172 def insertResourceEvent(event: ResourceEventModel) = {
173 val localEvent = createResourceEventFromOther(event)
174 _resourceEvents ::= localEvent
178 def findResourceEventById(id: String) = {
179 _resourceEvents.find(ev ⇒ ev.id == id)
182 def findResourceEventsByUserId(userId: String)
183 (sortWith: Option[(ResourceEvent, ResourceEvent) => Boolean]): List[ResourceEvent] = {
184 val byUserId = _resourceEvents.filter(_.userID == userId).toArray
185 val sorted = sortWith match {
187 byUserId.sortWith(sorter)
195 def findResourceEventsByUserIdAfterTimestamp(userID: String, timestamp: Long): List[ResourceEvent] = {
196 _resourceEvents.filter { ev ⇒
197 ev.userID == userID &&
198 (ev.occurredMillis > timestamp)
202 def findResourceEventHistory(userId: String,
204 instid: Option[String],
205 upTo: Long): List[ResourceEvent] = {
209 def findResourceEventsForReceivedPeriod(userID: String,
210 startTimeMillis: Long,
211 stopTimeMillis: Long): List[ResourceEvent] = {
212 _resourceEvents.filter { ev ⇒
213 ev.userID == userID &&
214 ev.isReceivedWithinMillis(startTimeMillis, stopTimeMillis)
218 def countOutOfSyncResourceEventsForBillingPeriod(userID: String, startMillis: Long, stopMillis: Long): Long = {
219 _resourceEvents.filter { case ev ⇒
220 ev.userID == userID &&
221 // out of sync events are those that were received in the billing month but occurred in previous (or next?)
223 ev.isOutOfSyncForBillingPeriod(startMillis, stopMillis)
228 * Finds all relevant resource events for the billing period.
229 * The relevant events are those:
230 * a) whose `occurredMillis` is within the given billing period or
231 * b) whose `receivedMillis` is within the given billing period.
233 * Order them by `occurredMillis`
235 override def findAllRelevantResourceEventsForBillingPeriod(userID: String,
237 stopMillis: Long): List[ResourceEvent] = {
238 _resourceEvents.filter { case ev ⇒
239 ev.userID == userID &&
240 ev.isOccurredOrReceivedWithinMillis(startMillis, stopMillis)
241 }.toList sortWith { case (ev1, ev2) ⇒ ev1.occurredMillis <= ev2.occurredMillis }
243 //- ResourceEventStore
246 def createIMEventFromJson(json: String) = {
247 StdIMEvent.fromJsonString(json)
250 def createIMEventFromOther(event: IMEventModel) = {
251 StdIMEvent.fromOther(event)
254 def pingIMEventStore(): Unit = {
258 def insertIMEvent(event: IMEventModel) = {
259 val localEvent = createIMEventFromOther(event)
260 imEventById += (event.id -> localEvent)
264 def findIMEventById(id: String) = imEventById.get(id)
268 * Find the `CREATE` even for the given user. Note that there must be only one such event.
270 def findCreateIMEventByUserID(userID: String): Option[IMEvent] = {
271 imEventById.valuesIterator.filter { e ⇒
272 e.userID == userID && e.isCreateUser
273 }.toList.sortWith { case (e1, e2) ⇒
274 e1.occurredMillis < e2.occurredMillis
278 def findLatestIMEventByUserID(userID: String): Option[IMEvent] = {
279 imEventById.valuesIterator.filter(_.userID == userID).toList.sortWith {
281 us1.occurredMillis > us2.occurredMillis
285 def findFirstIsActiveIMEventByUserID(userID: String): Option[IMEvent] = {
286 imEventById.valuesIterator.filter { case ev ⇒
287 ev.userID == userID && ev.isActive
288 }.toList.sortWith { case (ev1, ev2) ⇒
289 ev1.occurredMillis <= ev2.occurredMillis
300 * Scans events for the given user, sorted by `occurredMillis` in ascending order and runs them through
301 * the given function `f`.
303 * Any exception is propagated to the caller. The underlying DB resources are properly disposed in any case.
305 def replayIMEventsInOccurrenceOrder(userID: String)(f: (IMEvent) => Unit) = {
306 imEventById.valuesIterator.filter(_.userID == userID).toSeq.sortWith {
307 case (ev1, ev2) ⇒ ev1.occurredMillis <= ev2.occurredMillis
312 def loadPolicyEntriesAfter(after: Long) =
313 _policyEntries.filter(p => p.validFrom > after)
314 .sortWith((a,b) => a.validFrom < b.validFrom)
316 def storePolicyEntry(policy: PolicyEntry) = {_policyEntries = policy :: _policyEntries; Just(RecordID(policy.id))}
318 def updatePolicyEntry(policy: PolicyEntry) =
319 _policyEntries = _policyEntries.foldLeft(List[PolicyEntry]()){
321 if (p.id == policy.id)
327 def findPolicyEntry(id: String) = {
328 _policyEntries.find(p => p.id == id)
333 final def isLocalIMEvent(event: IMEventModel) = event match {
334 case _: MemIMEvent ⇒ true