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36 package gr.grnet.aquarium.service
38 import com.ckkloverdos.props.Props
39 import akka.actor.ActorRef
40 import gr.grnet.aquarium.{AquariumAwareSkeleton, Configurable}
41 import java.util.concurrent.ConcurrentHashMap
42 import gr.grnet.aquarium.util.Loggable
43 import gr.grnet.aquarium.actor.message.config.{AquariumPropertiesLoaded, ActorProviderConfigured}
44 import gr.grnet.aquarium.actor._
45 import gr.grnet.aquarium.service.event.AquariumCreatedEvent
48 * All actors are provided locally.
50 * @author Christos KK Loverdos <loverdos@gmail.com>.
52 class SimpleLocalRoleableActorProviderService
53 extends RoleableActorProviderService
54 with AquariumAwareSkeleton
58 private[this] val actorCache = new ConcurrentHashMap[ActorRole, ActorRef]
59 @volatile private[this] var _props: Props = _
61 def propertyPrefix = None
63 def configure(props: Props): Unit = {
68 // Start and configure actors
69 import SimpleLocalRoleableActorProviderService.RolesToBeStarted
71 for(role <- RolesToBeStarted) {
79 private[this] def _newActor(role: ActorRole): ActorRef = {
80 val actorFactory = (_class: Class[_ <: RoleableActor]) ⇒ {
81 val actor = aquarium.newInstance(_class, _class.getName)
82 actor.awareOfAquariumEx(AquariumCreatedEvent(aquarium))
86 val actorRef = akka.actor.Actor.actorOf(actorFactory(role.actorType)).start()
88 val propsMsg = AquariumPropertiesLoaded(this._props)
89 if(role.canHandleConfigurationMessage(propsMsg)) {
93 val providerMsg = ActorProviderConfigured(this)
94 if(role.canHandleConfigurationMessage(providerMsg)) {
95 actorRef ! providerMsg
101 private[this] def _fromCacheOrNew(role: ActorRole): ActorRef = synchronized {
102 actorCache.get(role) match {
104 val actorRef = _newActor(role)
105 actorCache.put(role, actorRef)
112 @throws(classOf[Exception])
113 def actorForRole(role: ActorRole, hints: Props = Props.empty) = synchronized {
114 if(role.isCacheable) {
115 _fromCacheOrNew(role)
121 override def toString = gr.grnet.aquarium.util.shortClassNameOf(this)
124 object SimpleLocalRoleableActorProviderService {
125 // Always set Router at the end.
126 // We could definitely use some automatic dependency sorting here (topological sorting anyone?)
127 final val RolesToBeStarted = List(
131 lazy val ActorClassByRole: Map[ActorRole, Class[_ <: RoleableActor]] =
132 RolesToBeStarted map {
134 (role, role.actorType)
137 lazy val ActorRefByRole: Map[ActorRole, ActorRef] =
138 ActorClassByRole map {
140 (role, akka.actor.Actor.actorOf(clazz).start())