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36 package gr.grnet.aquarium.computation
40 import gr.grnet.aquarium.util.findAndRemoveFromMap
41 import gr.grnet.aquarium.event.model.resource.ResourceEventModel
42 import gr.grnet.aquarium.event.model.resource.ResourceEventModel.FullMutableResourceTypeMap
45 * This is the mutable cousin of [[gr.grnet.aquarium.computation.state.parts.LatestResourceEventsSnapshot]].
47 * @param latestEventsMap
49 * @author Christos KK Loverdos <loverdos@gmail.com>
51 case class LatestResourceEventsWorker(latestEventsMap: FullMutableResourceTypeMap) {
54 * The gateway to immutable state.
56 * @param snapshotTime The relevant snapshot time.
57 * @return A fresh instance of [[gr.grnet.aquarium.computation.state.parts.LatestResourceEventsSnapshot]].
59 def toImmutableSnapshot(snapshotTime: Long) =
60 LatestResourceEventsSnapshot(latestEventsMap.valuesIterator.toList)
62 def updateResourceEvent(resourceEvent: ResourceEventModel): Unit = {
63 latestEventsMap((resourceEvent.resource, resourceEvent.instanceID)) = resourceEvent
66 def findResourceEvent(resource: String, instanceId: String): Option[ResourceEventModel] = {
67 latestEventsMap.get((resource, instanceId))
70 def findAndRemoveResourceEvent(resource: String, instanceId: String): Option[ResourceEventModel] = {
71 findAndRemoveFromMap(latestEventsMap, (resource, instanceId))
74 def size = latestEventsMap.size
76 def foreach[U](f: ResourceEventModel => U): Unit = {
77 latestEventsMap.valuesIterator.foreach(f)
81 object LatestResourceEventsWorker {
82 final val Empty = LatestResourceEventsWorker(scala.collection.mutable.Map())
85 * Helper factory to construct a worker from a list of events.
87 def fromList(latestEventsList: List[ResourceEventModel]): LatestResourceEventsWorker = {
88 LatestResourceEventsSnapshot(latestEventsList).toMutableWorker