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36 package gr.grnet.aquarium.logic.accounting
39 import gr.grnet.aquarium.logic.events.ResourceEvent
40 import com.ckkloverdos.maybe.{Failed, Just, Maybe}
42 import collection.immutable.SortedMap
47 * @author Georgios Gousios <gousiosg@gmail.com>
49 trait Accounting extends DSLUtils {
51 def chargeEvent(ev: ResourceEvent) : Maybe[Float] = {
54 return Failed(new AccountingException("Event not valid"))
56 //From now own, we can trust the event contents
57 val resource = Policy.policy.findResource(ev.resource).get
64 case class ChargeChunk(value: Float, algorithm: DSLAlgorithm,
65 priceList: DSLPriceList) {
71 def calcChangeChunks(agr: DSLAgreement, volume: Float,
72 from: Date, to: Date) : List[ChargeChunk] = {
74 resolveEffectiveAlgorithmsForTimeslot(Timeslot(from, to), agr)
75 resolveEffectivePricelistsForTimeslot(Timeslot(from, to), agr)
80 def splitChargeChunks(alg: Map[Timeslot, DSLAlgorithm],
81 price: Map[Timeslot, DSLPriceList]) :
82 (Map[Timeslot, DSLAlgorithm], Map[Timeslot, DSLPriceList]) = {
84 val algsort = alg.toSeq.sortWith((x,y) => sorter(x._1, y._1))
85 val prisort = price.toSeq.sortWith((x,y) => sorter(x._1, y._1))
87 // Type: Seq[((Timeslot, DSLAlgorithm),(Timeslot, DSLPriceList))]
88 val zipped = algsort.zip(prisort)
90 zipped.find(p => !p._1._1.equals(p._2._1)) match {
91 case None => (alg, price)
93 val algTimeslot = x._1._1
94 val priTimeslot = x._2._1
96 assert(algTimeslot.from == priTimeslot.from)
98 if (algTimeslot.endsAfter(priTimeslot)) {
99 val slices = algTimeslot.slice(priTimeslot.to)
100 val algo = alg.get(algTimeslot).get
101 val newalg = alg - algTimeslot ++
102 Map(slices.apply(0) -> algo) ++ Map(slices.apply(1) -> algo)
103 splitChargeChunks(newalg, price)
106 val slices = priTimeslot.slice(priTimeslot.to)
107 val pl = price.get(priTimeslot).get
108 val newPrice = price - priTimeslot ++
109 Map(slices.apply(0) -> pl) ++ Map(slices.apply(1) -> pl)
110 splitChargeChunks(alg, newPrice)
116 /** An exception raised when something goes wrong with accounting */
117 class AccountingException(msg: String) extends Exception(msg)