add average

src/main/kotlin/util/network/epidemic/Content.kt

@@ -1,9 +0,0 @@
-package util.network.epidemic
-
-data class Content<T>(val value: T, val timestamp: Long) {
-    companion object {
-        fun <T> createContent(value: T): Content<T> {
-            return Content(value, System.nanoTime())
-        }
-    }
-}

src/main/kotlin/util/network/epidemic/EpidemicNode.kt

@@ -4,23 +4,26 @@ import util.network.simulator.Address
 import util.network.simulator.Network
 import util.network.simulator.Node
 
-class EpidemicNode<T>(
+abstract class EpidemicNode<T, P: EpidemicPacket<T>>(
     address: Address,
     network: Network,
-    initialValue: Content<T>,
+    initialValue: T,
     bufferSize: Int = 1
 ) : Node(address, network, bufferSize) {
     @Volatile
     var nodeValue = initialValue
         private set
-    private var nodeState = State.SUSSCETIBLE
+    private var nodeState = State.SUSCETIBLE
 
     @Synchronized
-    fun changeValue(value: Content<T>) {
+    fun changeValue(value: T) {
         nodeValue = value
     }
 
-    private fun send(type: EpidemicPacket.Type, numberOfReceiver: Int = 1) {
+    private fun sendToRandom(
+        packetPrototype: EpidemicPacketPrototype<T>,
+        numberOfReceiver: Int = 1
+    ) {
         val toExclude = mutableListOf(address)
         repeat(numberOfReceiver) {
             var receiverAddress = network.getRandomAddress()
@@ -28,56 +31,47 @@ class EpidemicNode<T>(
                 receiverAddress = network.getRandomAddress()
             toExclude.add(receiverAddress)
 
-            val packet = EpidemicPacket(
-                address,
-                receiverAddress,
-                nodeValue,
-                type
-            )
-
-            send(packet)
+            send(packetPrototype.makePacket(receiverAddress))
         }
     }
 
-    private fun sendPush(numberOfReceiver: Int = 1) {
-        send(EpidemicPacket.Type.PUSH, numberOfReceiver)
-    }
+    abstract fun makeInfectionPrototypePacket(
+        type: EpidemicPacket.Type
+    ): EpidemicPacketPrototype<T>
 
-    private fun sendPull(numberOfReceiver: Int = 1) {
-        send(EpidemicPacket.Type.PULL, numberOfReceiver)
-    }
-
-    private fun sendPushPull(numberOfReceiver: Int = 1) {
-        send(EpidemicPacket.Type.PUSHPULL, numberOfReceiver)
-    }
-
-    private fun receivePushOrReply(packet: EpidemicPacket<Content<T>>) {
-        val receivedValue = packet.payload
-
-        if (receivedValue.timestamp > nodeValue.timestamp)
-            nodeValue = receivedValue
-    }
-
-    private fun receivePull(packet: EpidemicPacket<Content<T>>) {
-        val receivedValue = packet.payload
-
-        if (nodeValue.timestamp > receivedValue.timestamp)
-            send(
-                EpidemicPacket(
-                    address,
-                    packet.senderAddress,
-                    nodeValue,
-                    EpidemicPacket.Type.REPLY
-                )
+    protected fun sendPush(numberOfReceiver: Int = 1) {
+        sendToRandom(
+            makeInfectionPrototypePacket(EpidemicPacket.Type.PUSH),
+            numberOfReceiver
         )
     }
 
+    protected fun sendPull(numberOfReceiver: Int = 1) {
+        sendToRandom(
+            makeInfectionPrototypePacket(EpidemicPacket.Type.PULL),
+            numberOfReceiver
+        )
+    }
+
+    protected fun sendPushPull(numberOfReceiver: Int = 1) {
+        sendToRandom(
+            makeInfectionPrototypePacket(EpidemicPacket.Type.PUSHPULL),
+            numberOfReceiver
+        )
+    }
+
+    protected abstract fun receivePushOrReply(packet: P)
+
+    protected abstract fun receivePull(packet: P)
+
+    protected abstract fun infect()
+
     override fun communicatorFactory(threadGroup: ThreadGroup): CommunicatorFactory {
         return EpidemicCommunicatorFactory(threadGroup)
     }
 
     private enum class State {
-        SUSSCETIBLE, INFECTED, REMOVED
+        SUSCETIBLE, INFECTED, REMOVED
     }
 
     protected inner class EpidemicReceiver(
@@ -89,7 +83,8 @@ class EpidemicNode<T>(
         }
 
         private fun onReceive() {
-            val packet = receive() as EpidemicPacket<Content<T>>
+            val packet = receive() as P
+            //println(packet.type)
 
             when (packet.type) {
                 EpidemicPacket.Type.PUSH -> receivePushOrReply(packet)
@@ -110,11 +105,6 @@ class EpidemicNode<T>(
             while (!isInterrupted)
                 infect()
         }
-
-        private fun infect() {
-            sendPushPull()
-            sleep(100)
-        }
     }
 
     protected inner class EpidemicCommunicatorFactory(

src/main/kotlin/util/network/epidemic/EpidemicPacket.kt

@@ -3,8 +3,9 @@ package util.network.epidemic
 import util.network.simulator.Address
 import util.network.simulator.packet.Packet
 import util.network.simulator.packet.PayloadPacket
+import util.network.simulator.packet.PayloadPacketPrototype
 
-data class EpidemicPacket<T : Content<*>>(
+open class EpidemicPacket<T>(
     override val senderAddress: Address,
     override val receiverAddress: Address,
     override val payload: T,
@@ -26,9 +27,9 @@ data class EpidemicPacket<T : Content<*>>(
     companion object {
         fun <T> createFromNetworkPacket(
             packet: Packet,
-            payload: Content<T>,
+            payload: TimePayload<T>,
             type: Type
-        ): EpidemicPacket<Content<T>> = EpidemicPacket(
+        ): EpidemicPacket<TimePayload<T>> = EpidemicPacket(
             packet.senderAddress,
             packet.receiverAddress,
             payload,
@@ -36,9 +37,9 @@ data class EpidemicPacket<T : Content<*>>(
         )
 
         fun <T> createFromPayloadPacket(
-            packet: PayloadPacket<Content<T>>,
+            packet: PayloadPacket<TimePayload<T>>,
             type: Type
-        ): EpidemicPacket<Content<T>> = EpidemicPacket(
+        ): EpidemicPacket<TimePayload<T>> = EpidemicPacket(
             packet.senderAddress,
             packet.receiverAddress,
             packet.payload,
@@ -46,3 +47,13 @@ data class EpidemicPacket<T : Content<*>>(
         )
     }
 }
+
+open class EpidemicPacketPrototype<T>(
+    override val senderAddress: Address,
+    override val payload: T,
+    val type: EpidemicPacket.Type
+) : PayloadPacketPrototype<T> {
+    open fun makePacket(receiverAddress: Address): EpidemicPacket<T> {
+        return EpidemicPacket(senderAddress, receiverAddress, payload, type)
+    }
+}

src/main/kotlin/util/network/epidemic/ReplayPayload.kt

@@ -0,0 +1,6 @@
+package util.network.epidemic
+
+data class ReplayPayload<T>(
+    val value: T,
+    val isReplay: Boolean = true
+)

src/main/kotlin/util/network/epidemic/Test.kt

@@ -1,5 +1,6 @@
 package util.network.epidemic
 
+import util.network.epidemic.consinstence.DbNode
 import util.network.simulator.Address
 import util.network.simulator.Network
 
@@ -8,24 +9,24 @@ fun main() {
     val network = Network()
 
     repeat(10) {
-        EpidemicNode(Address(it), network, Content(0, 0))
+        DbNode(Address(it), network, TimePayload(0, 0))
     }
 
-    val alpha = network.getRandomNode() as EpidemicNode<Int>
+    val alpha = network.getRandomNode() as DbNode<Int>
 
     network.start()
 
     Thread.sleep(1000)
 
     network.forEach {
-        println((it as EpidemicNode<Int>).nodeValue)
+        println((it as DbNode<Int>).nodeValue)
     }
 
-    alpha.changeValue(Content(42, System.nanoTime()))
+    alpha.changeValue(TimePayload(42, System.nanoTime()))
     Thread.sleep(2000)
 
     network.forEach {
-        println((it as EpidemicNode<Int>).nodeValue)
+        println((it as DbNode<Int>).nodeValue)
     }
 }
 

src/main/kotlin/util/network/epidemic/TimePayload.kt

@@ -0,0 +1,9 @@
+package util.network.epidemic
+
+data class TimePayload<T>(val value: T, val timestamp: Long) {
+    companion object {
+        fun <T> createContent(value: T): TimePayload<T> {
+            return TimePayload(value, System.nanoTime())
+        }
+    }
+}

src/main/kotlin/util/network/epidemic/consinstence/AverageNode.kt

@@ -0,0 +1,59 @@
+package util.network.epidemic.consinstence
+
+import util.network.epidemic.EpidemicNode
+import util.network.epidemic.EpidemicPacket
+import util.network.epidemic.EpidemicPacketPrototype
+import util.network.epidemic.replay.ReplayPacket
+import util.network.epidemic.replay.ReplayPacketPrototype
+import util.network.simulator.Address
+import util.network.simulator.Network
+
+class AverageNode(
+    address: Address,
+    network: Network,
+    initialValue: Double,
+    bufferSize: Int = 1
+) : EpidemicNode<Double, ReplayPacket<Double>>(address, network, initialValue, bufferSize) {
+    override fun receivePushOrReply(packet: ReplayPacket<Double>) {
+        val payload = packet.payload
+
+        if (packet.isReplay)
+            changeValue(payload)
+        else {
+            val newValue = (nodeValue + payload) / 2
+
+            changeValue(newValue)
+
+            send(
+                ReplayPacket(
+                    address,
+                    packet.senderAddress,
+                    newValue,
+                    EpidemicPacket.Type.PUSH,
+                    true
+                )
+            )
+
+            sendPush()
+        }
+    }
+
+    override fun receivePull(packet: ReplayPacket<Double>) {
+        TODO("Not yet implemented")
+    }
+
+    override fun infect() {
+        Thread.interrupted()
+    }
+
+    override fun makeInfectionPrototypePacket(
+        type: EpidemicPacket.Type
+    ): EpidemicPacketPrototype<Double> {
+        return ReplayPacketPrototype(
+            address,
+            nodeValue,
+            type,
+            false
+        )
+    }
+}

src/main/kotlin/util/network/epidemic/consinstence/DbNode.kt

@@ -0,0 +1,52 @@
+package util.network.epidemic.consinstence
+
+import util.network.epidemic.TimePayload
+import util.network.epidemic.EpidemicNode
+import util.network.epidemic.EpidemicPacket
+import util.network.epidemic.EpidemicPacketPrototype
+import util.network.epidemic.replay.ReplayPacketPrototype
+import util.network.simulator.Address
+import util.network.simulator.Network
+
+class DbNode<T>(
+    address: Address,
+    network: Network,
+    initialValue: TimePayload<T>,
+    bufferSize: Int = 1
+) : EpidemicNode<TimePayload<T>, EpidemicPacket<TimePayload<T>>>(
+    address, network, initialValue, bufferSize
+) {
+    override fun receivePushOrReply(packet: EpidemicPacket<TimePayload<T>>) {
+        val receivedValue = packet.payload
+
+        if (nodeValue.timestamp < receivedValue.timestamp)
+            changeValue(receivedValue)
+    }
+
+    override fun receivePull(packet: EpidemicPacket<TimePayload<T>>) {
+        val receivedValue = packet.payload
+
+        if (nodeValue.timestamp > receivedValue.timestamp)
+            send(
+                EpidemicPacket(
+                    address,
+                    packet.senderAddress,
+                    nodeValue,
+                    EpidemicPacket.Type.REPLY
+                )
+            )
+    }
+
+    override fun infect() {
+        sendPushPull()
+        Thread.sleep(100)
+    }
+
+    override fun makeInfectionPrototypePacket(type: EpidemicPacket.Type): EpidemicPacketPrototype<TimePayload<T>> {
+        return EpidemicPacketPrototype(
+            address,
+            nodeValue,
+            type
+        )
+    }
+}

src/main/kotlin/util/network/epidemic/consinstence/Test.kt

@@ -0,0 +1,35 @@
+package util.network.epidemic.consinstence
+
+import util.network.epidemic.EpidemicPacket
+import util.network.epidemic.replay.ReplayPacket
+import util.network.simulator.Address
+import util.network.simulator.Network
+
+fun main() {
+    val network = Network()
+
+    repeat(17) {
+        AverageNode(Address(it), network, 0.0)
+    }
+
+    val alpha = network.getRandomNode() as AverageNode
+    val beta = network.getRandomNode() as AverageNode
+
+    val packet = ReplayPacket(
+        alpha.address,
+        beta.address,
+        1,
+        EpidemicPacket.Type.PUSH,
+        false
+    )
+
+    alpha.send(packet)
+
+    network.start()
+
+    Thread.sleep(2000)
+
+    network.forEach {
+        println(1.0 / (it as AverageNode).nodeValue)
+    }
+}

src/main/kotlin/util/network/epidemic/replay/ReplayPacket.kt

@@ -0,0 +1,30 @@
+package util.network.epidemic.replay
+
+import util.network.epidemic.EpidemicPacket
+import util.network.epidemic.EpidemicPacketPrototype
+import util.network.simulator.Address
+
+class ReplayPacket<T>(
+    senderAddress: Address,
+    receiverAddress: Address,
+    payload: T,
+    type: Type,
+    val isReplay: Boolean
+) : EpidemicPacket<T>(senderAddress, receiverAddress, payload, type)
+
+class ReplayPacketPrototype<T> (
+    senderAddress: Address,
+    payload: T,
+    type: EpidemicPacket.Type,
+    val isReplay: Boolean
+) : EpidemicPacketPrototype<T>(senderAddress, payload, type) {
+    override fun makePacket(receiverAddress: Address): EpidemicPacket<T> {
+        return ReplayPacket(
+            senderAddress,
+            receiverAddress,
+            payload,
+            type,
+            isReplay
+        )
+    }
+}

src/main/kotlin/util/network/simulator/Node.kt

@@ -32,7 +32,7 @@ abstract class Node(
         return buffer.take()
     }
 
-    protected fun send(packet: Packet) {
+    fun send(packet: Packet) {
         network[packet.receiverAddress]?.setPacket(packet)
     }
 

src/main/kotlin/util/network/simulator/packet/NetworkPacket.kt

@@ -0,0 +1,16 @@
+package util.network.simulator.packet
+
+import util.network.simulator.Address
+
+data class NetworkPacket(
+    override val senderAddress: Address,
+    override val receiverAddress: Address
+) : Packet
+
+data class NetworkPacketPrototype(
+    override val senderAddress: Address
+): PacketPrototype {
+    fun makePacket(receiverAddress: Address): NetworkPacket {
+        return NetworkPacket(senderAddress, receiverAddress)
+    }
+}

src/main/kotlin/util/network/simulator/packet/Packet.kt

@@ -7,7 +7,6 @@ interface Packet {
     val receiverAddress: Address
 }
 
-data class NetworkPacket(
-    override val senderAddress: Address,
-    override val receiverAddress: Address
-) : Packet
+interface PacketPrototype {
+    val senderAddress: Address
+}

src/main/kotlin/util/network/simulator/packet/PayloadPacket.kt

@@ -3,3 +3,7 @@ package util.network.simulator.packet
 interface PayloadPacket<T>: Packet {
     val payload: T
 }
+
+interface PayloadPacketPrototype<T> : PacketPrototype {
+    val payload: T
+}