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36 package gr.grnet.aquarium.charging
38 import gr.grnet.aquarium.event.model.resource.ResourceEventModel
39 import scala.collection.mutable
40 import gr.grnet.aquarium.logic.accounting.dsl.Timeslot
43 * In practice a resource usage will be charged for the total amount of usage
44 * between resource usage changes.
46 * Example resource that might be adept to a continuous policy is diskspace, as in Pithos+ service.
48 * @author Christos KK Loverdos <loverdos@gmail.com>
50 final class ContinuousChargingBehavior
51 extends ChargingBehavior(
52 ChargingBehaviorAliases.continuous,
53 Set(ChargingBehaviorNameInput, UnitPriceInput, OldTotalAmountInput, TimeDeltaInput)) {
55 protected def computeSelectorPath(
56 chargingData: mutable.Map[String, Any],
57 currentResourceEvent: ResourceEventModel,
58 referenceTimeslot: Timeslot,
59 previousValue: Double,
61 oldAccumulatingAmount: Double,
62 newAccumulatingAmount: Double
67 def computeNewAccumulatingAmount(oldAmount: Double, newEventValue: Double, details: Map[String, String]): Double = {
68 // If the total is in the details, get it, or else compute it
69 details.get("total") match {
74 oldAmount + newEventValue
78 def getResourceInstanceInitialAmount: Double = {
83 * This is called when we have the very first event for a particular resource instance, and we want to know
84 * if it is billable or not.
86 def isBillableFirstEvent(event: ResourceEventModel) = {
90 def mustGenerateDummyFirstEvent = true
92 def supportsImplicitEvents = {
96 def mustConstructImplicitEndEventFor(resourceEvent: ResourceEventModel) = {
100 def constructImplicitEndEventFor(resourceEvent: ResourceEventModel, newOccurredMillis: Long) = {
101 assert(supportsImplicitEvents && mustConstructImplicitEndEventFor(resourceEvent))
103 val details = resourceEvent.details
104 val newDetails = ResourceEventModel.setAquariumSyntheticAndImplicitEnd(details)
106 resourceEvent.withDetails(newDetails, newOccurredMillis)
110 object ContinuousChargingBehavior {
111 private[this] final val TheOne = new ContinuousChargingBehavior
113 def apply(): ContinuousChargingBehavior = TheOne