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36 package gr.grnet.aquarium.user
38 import gr.grnet.aquarium.util.json.{JsonHelpers, JsonSupport}
39 import net.liftweb.json.{JsonAST, Xml}
40 import gr.grnet.aquarium.logic.accounting.dsl.DSLAgreement
41 import com.ckkloverdos.maybe.{Failed, Maybe}
42 import gr.grnet.aquarium.logic.events.WalletEntry
46 * A comprehensive representation of the User's state.
48 * Note that it is made of autonomous parts that are actually data snapshots.
50 * The different snapshots need not agree on the snapshot time, ie. some state
51 * part may be stale, while other may be fresh.
53 * The user state is meant to be partially updated according to relevant events landing on Aquarium.
55 * @author Christos KK Loverdos <loverdos@gmail.com>
62 * When the user was created in the system (not Aquarium). We use this as a basis for billing periods. Set to
66 userCreationMillis: Long,
69 * Each time the user state is updated, this must be increased.
70 * The counter is used when accessing user state from the cache (user state store)
71 * in order to get the latest value for a particular billing period.
73 stateChangeCounter: Long,
76 * True iff this user state refers to a full billing period, that is a full billing month.
78 isFullBillingMonthState: Boolean,
81 * The full billing period for which this user state refers to.
82 * This is set when the user state refers to a full billing period (= month)
83 * and is used to cache the user state for subsequent queries.
85 theFullBillingMonth: BillingMonth,
88 * If this is a state for a full billing month, then keep here the implicit OFF
91 * The use case is this: A VM may have been started (ON state) before the end of the billing period
92 * and ended (OFF state) after the beginning of the next billing period. In order to bill this, we must assume
93 * an implicit OFF even right at the end of the billing period and an implicit ON event with the beginning of the
94 * next billing period.
96 implicitOFFs: ImplicitOFFResourceEventsSnapshot,
99 * So far computed wallet entries for the current billing month.
101 billingMonthWalletEntries: List[WalletEntry],
104 * Wallet entries that were computed for out of sync events.
105 * (for the current billing month ??)
107 outOfSyncWalletEntries: List[WalletEntry],
110 * The latest resource events per resource instance
112 latestResourceEvents: LatestResourceEventsSnapshot,
115 * Counts the number of resource events used to produce this user state for
116 * the billing period recorded by `billingPeriodSnapshot`
118 resourceEventsCounter: Long,
120 active: ActiveStateSnapshot,
121 credits: CreditSnapshot,
122 agreements: AgreementSnapshot,
123 roles: RolesSnapshot,
124 ownedResources: OwnedResourcesSnapshot
125 ) extends JsonSupport {
127 private[this] def _allSnapshots: List[Long] = {
130 credits.snapshotTime, agreements.snapshotTime, roles.snapshotTime,
131 ownedResources.snapshotTime)
134 def oldestSnapshotTime: Long = _allSnapshots min
136 def newestSnapshotTime: Long = _allSnapshots max
138 // def userCreationDate = new Date(userCreationMillis)
140 // def userCreationFormatedDate = new DateCalculator(userCreationMillis).toString
142 def maybeDSLAgreement(at: Long): Maybe[DSLAgreement] = {
144 case snapshot @ AgreementSnapshot(data, _) ⇒
145 snapshot.getAgreement(at)
147 Failed(new Exception("No agreement snapshot found for user %s".format(userId)))
151 def findResourceInstanceSnapshot(resource: String, instanceId: String): Maybe[ResourceInstanceSnapshot] = {
152 ownedResources.findResourceInstanceSnapshot(resource, instanceId)
155 def getResourceInstanceAmount(resource: String, instanceId: String, defaultValue: Double): Double = {
156 ownedResources.getResourceInstanceAmount(resource, instanceId, defaultValue)
159 def copyForResourcesSnapshotUpdate(resource: String, // resource name
160 instanceId: String, // resource instance id
162 snapshotTime: Long): UserState = {
164 val (newResources, _, _) = ownedResources.computeResourcesSnapshotUpdate(resource, instanceId, newAmount, snapshotTime)
167 ownedResources = newResources,
168 stateChangeCounter = this.stateChangeCounter + 1)
171 def resourcesMap = ownedResources.toResourcesMap
173 def safeCredits = credits match {
174 case c @ CreditSnapshot(_, _) ⇒ c
175 case _ ⇒ CreditSnapshot(0.0, 0)
181 def fromJson(json: String): UserState = {
182 JsonHelpers.jsonToObject[UserState](json)
185 def fromJValue(jsonAST: JsonAST.JValue): UserState = {
186 JsonHelpers.jValueToObject[UserState](jsonAST)
189 def fromBytes(bytes: Array[Byte]): UserState = {
190 JsonHelpers.jsonBytesToObject[UserState](bytes)
193 def fromXml(xml: String): UserState = {
194 fromJValue(Xml.toJson(scala.xml.XML.loadString(xml)))
198 final val _id = "_id"
199 final val userId = "userId"
203 case class BillingMonth(yearOfBillingMonth: Int, billingMonth: Int)