/*
- * Copyright 2011 GRNET S.A. All rights reserved.
+ * Copyright 2011-2012 GRNET S.A. All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
package gr.grnet.aquarium.store.mongodb
-import gr.grnet.aquarium.util.Loggable
-import com.mongodb.util.JSON
-import gr.grnet.aquarium.user.UserState
-import gr.grnet.aquarium.util.displayableObjectInfo
-import gr.grnet.aquarium.util.json.JsonSupport
-import collection.mutable.ListBuffer
-import gr.grnet.aquarium.store._
-import gr.grnet.aquarium.logic.events.ResourceEvent.JsonNames
-import java.util.Date
-import com.ckkloverdos.maybe.Maybe
+import collection.immutable
import com.mongodb._
-import gr.grnet.aquarium.logic.events.{UserEvent, WalletEntry, ResourceEvent, AquariumEvent}
+import gr.grnet.aquarium.computation.BillingMonthInfo
+import gr.grnet.aquarium.converter.StdConverters
+import gr.grnet.aquarium.logic.accounting.dsl.Timeslot
+import gr.grnet.aquarium.message.MessageConstants
+import gr.grnet.aquarium.message.avro.gen.{UserAgreementHistoryMsg, UserStateMsg, IMEventMsg, ResourceEventMsg, PolicyMsg}
+import gr.grnet.aquarium.message.avro.{MessageHelpers, MessageFactory, OrderingHelpers, AvroHelpers}
+import gr.grnet.aquarium.store._
+import gr.grnet.aquarium.util._
+import gr.grnet.aquarium.util.Once
+import gr.grnet.aquarium.util.json.JsonSupport
+import gr.grnet.aquarium.{Aquarium, AquariumException}
+import org.apache.avro.specific.SpecificRecord
+import org.bson.types.ObjectId
/**
* Mongodb implementation of the various aquarium stores.
*
* @author Christos KK Loverdos <loverdos@gmail.com>
* @author Georgios Gousios <gousiosg@gmail.com>
+ * @author Prodromos Gerakios <pgerakio@grnet.gr>
*/
class MongoDBStore(
+ val aquarium: Aquarium,
val mongo: Mongo,
val database: String,
val username: String,
val password: String)
- extends ResourceEventStore with UserStateStore
- with WalletEntryStore with UserEventStore
+ extends ResourceEventStore
+ with UserStateStore
+ with IMEventStore
+ with PolicyStore
with Loggable {
- private[store] lazy val rcevents: DBCollection = getCollection(MongoDBStore.RESOURCE_EVENTS_COLLECTION)
- private[store] lazy val userstates: DBCollection = getCollection(MongoDBStore.USER_STATES_COLLECTION)
- private[store] lazy val imevents: DBCollection = getCollection(MongoDBStore.IM_EVENTS_COLLECTION)
- private[store] lazy val wallets: DBCollection = getCollection(MongoDBStore.IM_WALLETS_COLLECTION)
+ private[store] lazy val resourceEvents = getCollection(MongoDBStore.ResourceEventCollection)
+ private[store] lazy val userStates = getCollection(MongoDBStore.UserStateCollection)
+ private[store] lazy val imEvents = getCollection(MongoDBStore.IMEventCollection)
+ private[store] lazy val policies = getCollection(MongoDBStore.PolicyCollection)
+
+ private[store] lazy val indicesMap = {
+ val resev= new BasicDBObjectBuilder().
+ add(MongoDBStore.JsonNames.id,1).
+ add(MongoDBStore.JsonNames.userID,1).
+ add(MongoDBStore.JsonNames.occurredMillis,1).
+ add(MongoDBStore.JsonNames.receivedMillis,1).get
+ val imev = new BasicDBObjectBuilder().
+ add(MongoDBStore.JsonNames.userID,1).
+ add(MongoDBStore.JsonNames.eventType,"").
+ add(MongoDBStore.JsonNames.occurredMillis,1).get
+ val policy = new BasicDBObjectBuilder().
+ add("validFromMillis",1).
+ add("validToMillis",1).get
+ val user = new BasicDBObjectBuilder().
+ add( "occurredMillis",1).
+ add("isFullBillingMonth",false).
+ add("billingYear",1).
+ add("billingMonth",1).
+ add("billingMonthDay",1).get
+ Map(MongoDBStore.ResourceEventCollection -> resev,
+ MongoDBStore.IMEventCollection-> imev,
+ MongoDBStore.PolicyCollection-> policy,
+ MongoDBStore.UserStateCollection-> user
+ )
+ }
+ private[this] val once = new Once()
- private[this] def getCollection(name: String): DBCollection = {
- val db = mongo.getDB(database)
+ private[this] def doAuthenticate(db: DB) {
if(!db.isAuthenticated && !db.authenticate(username, password.toCharArray)) {
- throw new StoreException("Could not authenticate user %s".format(username))
+ throw new AquariumException("Could not authenticate user %s".format(username))
}
- db.getCollection(name)
}
- private[this] def _sortByTimestampAsc[A <: AquariumEvent](one: A, two: A): Boolean = {
- if (one.occurredMillis > two.occurredMillis) false
- else if (one.occurredMillis < two.occurredMillis) true
- else true
- }
-
- private[this] def _sortByTimestampDesc[A <: AquariumEvent](one: A, two: A): Boolean = {
- if (one.occurredMillis < two.occurredMillis) false
- else if (one.occurredMillis > two.occurredMillis) true
- else true
+ private[this] def getCollection(name: String): DBCollection = {
+ val db = mongo.getDB(database)
+ doAuthenticate(db)
+ once.run { /* this code is thread-safe and will run exactly once*/
+ indicesMap.foreach { case (collection,obj) =>
+ mongo.getDB(database).getCollection(collection).createIndex(obj)
+ }
+ }
+ db.getCollection(name)
}
//+ResourceEventStore
- def storeResourceEvent(event: ResourceEvent): Maybe[RecordID] =
- MongoDBStore.storeAquariumEvent(event, rcevents)
+ def pingResourceEventStore(): Unit = synchronized {
+ getCollection(MongoDBStore.ResourceEventCollection)
+ MongoDBStore.ping(mongo)
+ }
- def findResourceEventById(id: String): Maybe[ResourceEvent] =
- MongoDBStore.findById(id, rcevents, MongoDBStore.dbObjectToResourceEvent)
+ def insertResourceEvent(event: ResourceEventMsg) = {
+ val mongoID = new ObjectId()
+ event.setInStoreID(mongoID.toStringMongod)
- def findResourceEventsByUserId(userId: String)
- (sortWith: Option[(ResourceEvent, ResourceEvent) => Boolean]): List[ResourceEvent] = {
- val query = new BasicDBObject(JsonNames.userId, userId)
+ val dbObject = new BasicDBObjectBuilder().
+ add(MongoDBStore.JsonNames._id, mongoID).
+ add(MongoDBStore.JsonNames.payload, AvroHelpers.bytesOfSpecificRecord(event)).
+ add(MongoDBStore.JsonNames.userID, event.getUserID).
+ add(MongoDBStore.JsonNames.occurredMillis, event.getOccurredMillis).
+ add(MongoDBStore.JsonNames.receivedMillis, event.getReceivedMillis).
+ get()
- MongoDBStore.runQuery(query, rcevents)(MongoDBStore.dbObjectToResourceEvent)(sortWith)
+ MongoDBStore.insertDBObject(dbObject, resourceEvents)
+ event
}
- def findResourceEventsByUserIdAfterTimestamp(userId: String, timestamp: Long): List[ResourceEvent] = {
- val query = new BasicDBObject()
- query.put(JsonNames.userId, userId)
- query.put(JsonNames.timestamp, new BasicDBObject("$gte", timestamp))
-
- val sort = new BasicDBObject(JsonNames.timestamp, 1)
+ def findResourceEventByID(id: String): Option[ResourceEventMsg] = {
+ val dbObjectOpt = MongoDBStore.findOneByAttribute(resourceEvents, MongoDBStore.JsonNames.id, id)
+ for {
+ dbObject ← dbObjectOpt
+ payload = dbObject.get(MongoDBStore.JsonNames.payload)
+ msg = AvroHelpers.specificRecordOfBytes(payload.asInstanceOf[Array[Byte]], new ResourceEventMsg)
+ } yield msg
+ }
- val cursor = rcevents.find(query).sort(sort)
+ def countOutOfSyncResourceEventsForBillingPeriod(userID: String, startMillis: Long, stopMillis: Long): Long = {
+ val query = new BasicDBObjectBuilder().
+ add(MongoDBStore.JsonNames.userID, userID).
+ // received within the period
+ add(MongoDBStore.JsonNames.receivedMillis, new BasicDBObject("$gte", startMillis)).
+ add(MongoDBStore.JsonNames.receivedMillis, new BasicDBObject("$lte", stopMillis)).
+ // occurred outside the period
+ add("$or", {
+ val dbList = new BasicDBList()
+ dbList.add(0, new BasicDBObject(MongoDBStore.JsonNames.occurredMillis, new BasicDBObject("$lt", startMillis)))
+ dbList.add(1, new BasicDBObject(MongoDBStore.JsonNames.occurredMillis, new BasicDBObject("$gt", stopMillis)))
+ dbList
+ }).
+ get()
+
+ resourceEvents.count(query)
+ }
- try {
- val buffer = new scala.collection.mutable.ListBuffer[ResourceEvent]
+ def foreachResourceEventOccurredInPeriod(
+ userID: String,
+ startMillis: Long,
+ stopMillis: Long
+ )(f: ResourceEventMsg ⇒ Unit): Long = {
+ var _counter= 0L
+ val query = new BasicDBObjectBuilder().
+ add(MongoDBStore.JsonNames.userID, userID).
+ add(MongoDBStore.JsonNames.occurredMillis, new BasicDBObject("$gte", startMillis)).
+ add(MongoDBStore.JsonNames.occurredMillis, new BasicDBObject("$lte", stopMillis)).
+ get()
+
+ val sorter = new BasicDBObject(MongoDBStore.JsonNames.occurredMillis, 1)
+ val cursor = resourceEvents.find(query).sort(sorter)
+
+ withCloseable(cursor) { cursor ⇒
while(cursor.hasNext) {
- buffer += MongoDBStore.dbObjectToResourceEvent(cursor.next())
+ val nextDBObject = cursor.next()
+ val payload = nextDBObject.get(MongoDBStore.JsonNames.payload).asInstanceOf[Array[Byte]]
+ val nextEvent = AvroHelpers.specificRecordOfBytes(payload, new ResourceEventMsg)
+
+ f(nextEvent)
+ _counter += 1
}
- buffer.toList
- } finally {
- cursor.close()
}
+
+ _counter
}
//-ResourceEventStore
- //+UserStateStore
- def storeUserState(userState: UserState): Maybe[RecordID] =
- MongoDBStore.storeUserState(userState, userstates)
-
- def findUserStateByUserId(userId: String): Maybe[UserState] = {
- Maybe {
- val query = new BasicDBObject(JsonNames.userId, userId)
- val cursor = userstates find query
-
- try {
- if(cursor.hasNext)
- MongoDBStore.dbObjectToUserState(cursor.next())
- else
- null
- } finally {
- cursor.close()
- }
+ //+ UserStateStore
+ def findUserStateByUserID(userID: String) = {
+ val dbObjectOpt = MongoDBStore.findOneByAttribute(userStates, MongoDBStore.JsonNames.userID, userID)
+ for {
+ dbObject <- dbObjectOpt
+ payload = dbObject.get(MongoDBStore.JsonNames.payload).asInstanceOf[Array[Byte]]
+ msg = AvroHelpers.specificRecordOfBytes(payload, new UserStateMsg)
+ } yield {
+ msg
}
}
- //-UserStateStore
- //+WalletEntryStore
- def storeWalletEntry(entry: WalletEntry): Maybe[RecordID] =
- MongoDBStore.storeAquariumEvent(entry, wallets)
+ def findLatestUserStateForFullMonthBilling(userID: String, bmi: BillingMonthInfo) = {
+ val query = new BasicDBObjectBuilder().
+ add(MongoDBStore.JsonNames.userID, userID).
+ add(MongoDBStore.JsonNames.isForFullMonth, true).
+ add(MongoDBStore.JsonNames.billingYear, bmi.year).
+ add(MongoDBStore.JsonNames.billingMonth, bmi.month).
+ get()
+
+ // Descending order, so that the latest comes first
+ val sorter = new BasicDBObject(MongoDBStore.JsonNames.occurredMillis, -1)
- def findWalletEntryById(id: String): Maybe[WalletEntry] =
- MongoDBStore.findById[WalletEntry](id, wallets, MongoDBStore.dbObjectToWalletEntry)
+ val cursor = userStates.find(query).sort(sorter)
- def findUserWalletEntries(userId: String) = {
- // TODO: optimize
- findUserWalletEntriesFromTo(userId, new Date(0), new Date(Int.MaxValue))
+ withCloseable(cursor) { cursor ⇒
+ MongoDBStore.findNextPayloadRecord(cursor, new UserStateMsg)
+ }
}
- def findUserWalletEntriesFromTo(userId: String, from: Date, to: Date) : List[WalletEntry] = {
- val q = new BasicDBObject()
- // TODO: Is this the correct way for an AND query?
- q.put(JsonNames.timestamp, new BasicDBObject("$gt", from.getTime))
- q.put(JsonNames.timestamp, new BasicDBObject("$lt", to.getTime))
- q.put(JsonNames.userId, userId)
+ def findLatestUserState(userID: String) = {
+ val query = new BasicDBObjectBuilder().
+ add(MongoDBStore.JsonNames.userID, userID).
+ get()
+
+ // Descending order, so that the latest comes first
+ val sorter = new BasicDBObject(MongoDBStore.JsonNames.occurredMillis, -1)
- MongoDBStore.runQuery[WalletEntry](q, wallets)(MongoDBStore.dbObjectToWalletEntry)(Some(_sortByTimestampAsc))
+ val cursor = userStates.find(query).sort(sorter)
+
+ withCloseable(cursor) { cursor ⇒
+ MongoDBStore.findNextPayloadRecord(cursor, new UserStateMsg)
+ }
}
- def findLatestUserWalletEntries(userId: String) = {
- Maybe {
- val orderBy = new BasicDBObject(JsonNames.occurredMillis, -1) // -1 is descending order
- val cursor = wallets.find().sort(orderBy)
-
- try {
- val buffer = new scala.collection.mutable.ListBuffer[WalletEntry]
- if(cursor.hasNext) {
- val walletEntry = MongoDBStore.dbObjectToWalletEntry(cursor.next())
- buffer += walletEntry
-
- var _previousOccurredMillis = walletEntry.occurredMillis
- var _ok = true
-
- while(cursor.hasNext && _ok) {
- val walletEntry = MongoDBStore.dbObjectToWalletEntry(cursor.next())
- var currentOccurredMillis = walletEntry.occurredMillis
- _ok = currentOccurredMillis == _previousOccurredMillis
-
- if(_ok) {
- buffer += walletEntry
- }
- }
-
- buffer.toList
- } else {
- null
- }
- } finally {
- cursor.close()
- }
+ /**
+ * Stores a user state.
+ */
+ def insertUserState(event: UserStateMsg)= {
+ val mongoID = new ObjectId()
+ event.setInStoreID(mongoID.toStringMongod)
+
+ val dbObject = new BasicDBObjectBuilder().
+ add(MongoDBStore.JsonNames._id, mongoID).
+ add(MongoDBStore.JsonNames.payload, AvroHelpers.bytesOfSpecificRecord(event)).
+ add(MongoDBStore.JsonNames.userID, event.getUserID).
+ add(MongoDBStore.JsonNames.occurredMillis, event.getOccurredMillis).
+ add(MongoDBStore.JsonNames.isForFullMonth, event.getIsForFullMonth).
+ add(MongoDBStore.JsonNames.billingYear, event.getBillingYear).
+ add(MongoDBStore.JsonNames.billingMonth, event.getBillingMonth).
+ add(MongoDBStore.JsonNames.billingMonthDay, event.getBillingMonthDay).
+ get()
+
+ MongoDBStore.insertDBObject(dbObject, userStates)
+ event
+ }
+ //- UserStateStore
+
+ //+IMEventStore
+ def pingIMEventStore(): Unit = {
+ getCollection(MongoDBStore.IMEventCollection)
+ MongoDBStore.ping(mongo)
+ }
+
+ def insertIMEvent(event: IMEventMsg) = {
+ val mongoID = new ObjectId()
+ event.setInStoreID(mongoID.toStringMongod)
+
+ val dbObject = new BasicDBObjectBuilder().
+ add(MongoDBStore.JsonNames._id, mongoID).
+ add(MongoDBStore.JsonNames.payload, AvroHelpers.bytesOfSpecificRecord(event)).
+ add(MongoDBStore.JsonNames.userID, event.getUserID).
+ add(MongoDBStore.JsonNames.eventType, event.getEventType().toLowerCase).
+ add(MongoDBStore.JsonNames.occurredMillis, event.getOccurredMillis).
+ add(MongoDBStore.JsonNames.receivedMillis, event.getReceivedMillis).
+ get()
+
+ MongoDBStore.insertDBObject(dbObject, imEvents)
+ event
+ }
+
+ def findIMEventByID(id: String) = {
+ val dbObjectOpt = MongoDBStore.findOneByAttribute(imEvents, MongoDBStore.JsonNames.id, id)
+ for {
+ dbObject ← dbObjectOpt
+ payload = dbObject.get(MongoDBStore.JsonNames.payload).asInstanceOf[Array[Byte]]
+ msg = AvroHelpers.specificRecordOfBytes(payload, new IMEventMsg)
+ } yield {
+ msg
}
}
- //-WalletEntryStore
- //+UserEventStore
- def storeUserEvent(event: UserEvent): Maybe[RecordID] =
- MongoDBStore.storeAny[UserEvent](event, imevents, JsonNames.userId,
- _.userId, MongoDBStore.jsonSupportToDBObject)
+ /**
+ * Find the `CREATE` even for the given user. Note that there must be only one such event.
+ */
+ def findCreateIMEventByUserID(userID: String) = {
+ val query = new BasicDBObjectBuilder().
+ add(MongoDBStore.JsonNames.userID, userID).
+ add(MongoDBStore.JsonNames.eventType, MessageConstants.IMEventMsg.EventTypes.create).get()
- def findUserEventById(id: String): Maybe[UserEvent] =
- MongoDBStore.findById[UserEvent](id, wallets, MongoDBStore.dbObjectToUserEvent)
+ // Normally one such event is allowed ...
+ val cursor = imEvents.find(query).sort(new BasicDBObject(MongoDBStore.JsonNames.occurredMillis, 1))
+
+ val dbObjectOpt = withCloseable(cursor) { cursor ⇒
+ if(cursor.hasNext) {
+ Some(cursor.next())
+ } else {
+ None
+ }
+ }
- def findUserEventsByUserId(userId: String)
- (sortWith: Option[(UserEvent, UserEvent) => Boolean]): List[UserEvent] = {
- val query = new BasicDBObject(JsonNames.userId, userId)
- MongoDBStore.runQuery(query, rcevents)(MongoDBStore.dbObjectToUserEvent)(sortWith)
+ for {
+ dbObject <- dbObjectOpt
+ payload = dbObject.get(MongoDBStore.JsonNames.payload).asInstanceOf[Array[Byte]]
+ msg = AvroHelpers.specificRecordOfBytes(payload, new IMEventMsg)
+ } yield {
+ msg
+ }
}
- //-UserEventStore
-}
-object MongoDBStore {
- final val RESOURCE_EVENTS_COLLECTION = "resevents"
- //final val PROCESSED_RESOURCE_EVENTS_COLLECTION = "procresevents"
- final val USER_STATES_COLLECTION = "userstates"
- final val IM_EVENTS_COLLECTION = "imevents"
- final val IM_WALLETS_COLLECTION = "wallets"
-
- /* TODO: Some of the following methods rely on JSON (de-)serialization).
- * A method based on proper object serialization would be much faster.
- */
- def dbObjectToResourceEvent(dbObject: DBObject): ResourceEvent = {
- ResourceEvent.fromJson(JSON.serialize(dbObject))
+ /**
+ * Scans events for the given user, sorted by `occurredMillis` in ascending order and runs them through
+ * the given function `f`.
+ *
+ * Any exception is propagated to the caller. The underlying DB resources are properly disposed in any case.
+ */
+ def foreachIMEventInOccurrenceOrder(userID: String)(f: (IMEventMsg) ⇒ Boolean) = {
+ val query = new BasicDBObject(MongoDBStore.JsonNames.userID, userID)
+ val cursor = imEvents.find(query).sort(new BasicDBObject(MongoDBStore.JsonNames.occurredMillis, 1))
+
+ var _shouldContinue = true
+ withCloseable(cursor) { cursor ⇒
+ while(_shouldContinue && cursor.hasNext) {
+ val dbObject = cursor.next()
+ val payload = dbObject.get(MongoDBStore.JsonNames.payload).asInstanceOf[Array[Byte]]
+ val msg = AvroHelpers.specificRecordOfBytes(payload, new IMEventMsg)
+
+ _shouldContinue = f(msg)
+ }
+ }
+
+ _shouldContinue
}
+ //-IMEventStore
- def dbObjectToUserState(dbObj: DBObject): UserState = {
- UserState.fromJson(JSON.serialize(dbObj))
+ //+PolicyStore
+ def foreachPolicy[U](f: PolicyMsg ⇒ U) {
+ val cursor = policies.find()
+ withCloseable(cursor) { cursor ⇒
+ while(cursor.hasNext) {
+ val dbObject = cursor.next()
+ val payload = dbObject.get(MongoDBStore.JsonNames.payload).asInstanceOf[Array[Byte]]
+ val policy = AvroHelpers.specificRecordOfBytes(payload, new PolicyMsg)
+ f(policy)
+ }
+ }
}
- def dbObjectToWalletEntry(dbObj: DBObject): WalletEntry = {
- WalletEntry.fromJson(JSON.serialize(dbObj))
+ def insertPolicy(policy: PolicyMsg): PolicyMsg = {
+ val mongoID = new ObjectId()
+ policy.setInStoreID(mongoID.toStringMongod)
+ val dbObject = new BasicDBObjectBuilder().
+ add(MongoDBStore.JsonNames._id, mongoID).
+ add(MongoDBStore.JsonNames.validFromMillis, policy.getValidFromMillis).
+ add(MongoDBStore.JsonNames.validToMillis, policy.getValidToMillis).
+ add(MongoDBStore.JsonNames.payload, AvroHelpers.bytesOfSpecificRecord(policy)).
+ get()
+
+ MongoDBStore.insertDBObject(dbObject, policies)
+ policy
}
- def dbObjectToUserEvent(dbObj: DBObject): UserEvent = {
- UserEvent.fromJson(JSON.serialize(dbObj))
+ def loadPolicyAt(atMillis: Long): Option[PolicyMsg] = {
+ // FIXME Inefficient
+ var _policies = immutable.TreeSet[PolicyMsg]()(OrderingHelpers.DefaultPolicyMsgOrdering)
+ foreachPolicy(_policies += _)
+ _policies.to(MessageFactory.newDummyPolicyMsgAt(atMillis)).lastOption
}
- def findById[A >: Null <: AquariumEvent](id: String, collection: DBCollection, deserializer: (DBObject) => A) : Maybe[A] = Maybe {
- val query = new BasicDBObject(JsonNames.id, id)
- val cursor = collection find query
-
- try {
- if(cursor.hasNext)
- deserializer apply cursor.next
- else
- null: A // will be transformed to NoVal by the Maybe polymorphic constructor
- } finally {
- cursor.close()
- }
+ def loadSortedPoliciesWithin(fromMillis: Long, toMillis: Long): immutable.SortedMap[Timeslot, PolicyMsg] = {
+ // FIXME Inefficient
+ var _policies = immutable.TreeSet[PolicyMsg]()(OrderingHelpers.DefaultPolicyMsgOrdering)
+ foreachPolicy(_policies += _)
+
+ immutable.SortedMap(_policies.
+ from(MessageFactory.newDummyPolicyMsgAt(fromMillis)).
+ to(MessageFactory.newDummyPolicyMsgAt(toMillis)).toSeq.
+ map(p ⇒ (Timeslot(p.getValidFromMillis, p.getValidToMillis), p)): _*
+ )
}
+ //-PolicyStore
+}
- def runQuery[A <: AquariumEvent](query: DBObject, collection: DBCollection, orderBy: DBObject = null)
- (deserializer: (DBObject) => A)
- (sortWith: Option[(A, A) => Boolean]): List[A] = {
- val cursor0 = collection find query
- val cursor = if(orderBy ne null) {
- cursor0 sort orderBy
- } else {
- cursor0
- } // I really know that docs say that it is the same cursor.
-
- if(!cursor.hasNext) {
- cursor.close()
- Nil
- } else {
- val buff = new ListBuffer[A]()
+object MongoDBStore {
+ final val JsonNames = gr.grnet.aquarium.util.json.JsonNames
- while(cursor.hasNext) {
- buff += deserializer apply cursor.next
- }
+ final val collections = List("resevents","userstates","imevents","policies")
+
+ final val ResourceEventCollection = collections(0)
+
+ final val UserStateCollection = collections(1)
+
+ final val IMEventCollection = collections(2)
- cursor.close()
+ final val PolicyCollection = collections(3)
- sortWith match {
- case Some(sorter) => buff.toList.sortWith(sorter)
- case None => buff.toList
+ def firstResultIfExists[A](cursor: DBCursor, f: DBObject ⇒ A): Option[A] = {
+ withCloseable(cursor) { cursor ⇒
+ if(cursor.hasNext) {
+ Some(f(cursor.next()))
+ } else {
+ None
}
}
}
- def storeAquariumEvent[A <: AquariumEvent](event: A, collection: DBCollection) : Maybe[RecordID] = {
- storeAny[A](event, collection, JsonNames.id, (e) => e.id, MongoDBStore.jsonSupportToDBObject)
+ def ping(mongo: Mongo): Unit = synchronized {
+ // This requires a network roundtrip
+ mongo.isLocked
}
- def storeUserState(userState: UserState, collection: DBCollection): Maybe[RecordID] = {
- storeAny[UserState](userState, collection, JsonNames.userId, _.userId, MongoDBStore.jsonSupportToDBObject)
+ def findOneByAttribute(
+ collection: DBCollection,
+ attributeName: String,
+ attributeValue: String,
+ sortByOpt: Option[DBObject] = None
+ ): Option[DBObject] = {
+ val query = new BasicDBObject(attributeName, attributeValue)
+ val cursor = sortByOpt match {
+ case None ⇒ collection find query
+ case Some(sortBy) ⇒ collection find query sort sortBy
+ }
+ withCloseable(cursor) { cursor ⇒
+ if(cursor.hasNext) Some(cursor.next()) else None
+ }
}
- def storeAny[A](any: A,
- collection: DBCollection,
- idName: String,
- idValueProvider: (A) => String,
- serializer: (A) => DBObject) : Maybe[RecordID] = Maybe {
- // Store
- val dbObj = serializer apply any
- val writeResult = collection insert dbObj
- writeResult.getLastError().throwOnError()
-
- // Get back to retrieve unique id
- val cursor = collection.find(new BasicDBObject(idName, idValueProvider(any)))
-
- try {
- // TODO: better way to get _id?
- if(cursor.hasNext)
- RecordID(cursor.next().get(JsonNames._id).toString)
- else
- throw new StoreException("Could not store %s to %s".format(any, collection))
- } finally {
- cursor.close()
- }
- }
-
- def jsonSupportToDBObject(any: JsonSupport): DBObject = {
- JSON.parse(any.toJson) match {
- case dbObject: DBObject ⇒
- dbObject
- case _ ⇒
- throw new StoreException("Could not transform %s -> %s".format(displayableObjectInfo(any), classOf[DBObject].getName))
+ def insertDBObject(dbObj: DBObject, collection: DBCollection) {
+ collection.insert(dbObj, WriteConcern.JOURNAL_SAFE)
+ }
+
+ def findNextPayloadRecord[R <: SpecificRecord](cursor: DBCursor, fresh: R): Option[R] = {
+ for {
+ dbObject <- if(cursor.hasNext) Some(cursor.next()) else None
+ payload = dbObject.get(MongoDBStore.JsonNames.payload).asInstanceOf[Array[Byte]]
+ msg = AvroHelpers.specificRecordOfBytes(payload, fresh)
+ } yield {
+ msg
}
}
+
+ def jsonSupportToDBObject(jsonSupport: JsonSupport) = {
+ StdConverters.AllConverters.convertEx[DBObject](jsonSupport)
+ }
}
projects / aquarium / blobdiff