Initial work on multi-server bridge from a while back.

buildSrc/build.gradle.kts

@@ -1,6 +1,6 @@
 plugins {
   `kotlin-dsl`
-  kotlin("plugin.serialization") version "1.5.31"
+  kotlin("plugin.serialization") version "1.6.21"
 }
 
 repositories {
@@ -8,10 +8,10 @@ repositories {
 }
 
 dependencies {
-  implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:1.6.10")
-  implementation("org.jetbrains.kotlin:kotlin-serialization:1.6.10")
-  implementation("gradle.plugin.com.github.johnrengelman:shadow:7.1.1")
-  implementation("com.google.code.gson:gson:2.8.9")
+  implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:1.6.21")
+  implementation("org.jetbrains.kotlin:kotlin-serialization:1.6.21")
+  implementation("gradle.plugin.com.github.johnrengelman:shadow:7.1.2")
+  implementation("com.google.code.gson:gson:2.9.0")
   implementation("org.bouncycastle:bcprov-jdk15on:1.70")
 }
 

foundation-bifrost/build.gradle.kts

@@ -2,6 +2,7 @@ dependencies {
   implementation("net.dv8tion:JDA:5.0.0-alpha.2") {
     exclude(module = "opus-java")
   }
+  implementation("com.rabbitmq:amqp-client:5.14.2")
 
   compileOnly(project(":foundation-core"))
 }

foundation-bifrost/src/main/kotlin/cloud/kubelet/foundation/bifrost/EventHandler.kt

@@ -0,0 +1,11 @@
+package cloud.kubelet.foundation.bifrost
+
+import io.papermc.paper.event.player.AsyncChatEvent
+import org.bukkit.event.player.PlayerJoinEvent
+import org.bukkit.event.player.PlayerQuitEvent
+
+interface EventHandler {
+  fun onPlayerJoin(e: PlayerJoinEvent)
+  fun onPlayerQuit(e: PlayerQuitEvent)
+  fun onChat(e: AsyncChatEvent)
+}

foundation-bifrost/src/main/kotlin/cloud/kubelet/foundation/bifrost/MultiServerEventHandler.kt

@@ -0,0 +1,26 @@
+package cloud.kubelet.foundation.bifrost
+
+import cloud.kubelet.foundation.bifrost.model.BifrostMessageQueueConfig
+import cloud.kubelet.foundation.bifrost.model.BifrostMultiConfig
+import com.rabbitmq.client.Connection
+import com.rabbitmq.client.ConnectionFactory
+import io.papermc.paper.event.player.AsyncChatEvent
+
+class MultiServerEventHandler(config: BifrostMultiConfig) : EventHandler {
+  private val bus = buildConnection(config.messageQueue)
+  private val channel = bus.createChannel()
+
+  init {
+    channel.queueDeclare(config.messageQueue.queueName, false, false, false, emptyMap())
+  }
+
+  override fun onChat(e: AsyncChatEvent) {
+  }
+
+  private companion object {
+    fun buildConnection(config: BifrostMessageQueueConfig): Connection = ConnectionFactory().apply {
+      host = config.host
+      port = config.port
+    }.newConnection()
+  }
+}

foundation-bifrost/src/main/kotlin/cloud/kubelet/foundation/bifrost/model/BifrostMultiConfig.kt

@@ -0,0 +1,19 @@
+package cloud.kubelet.foundation.bifrost.model
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class BifrostMultiConfig(
+  val messageQueue: BifrostMessageQueueConfig,
+)
+
+@Serializable
+data class BifrostMessageQueueConfig(
+  val host: String = "localhost",
+  val port: Int = 5672,
+
+  /**
+   * Name of the RabbitMQ queue
+   */
+  val queueName: String = "bifrost",
+)

foundation-bifrost/src/main/resources/bifrost-multi.yaml

@@ -0,0 +1,5 @@
+# Configuration for the Bifrost multi-server chat bridge.
+
+messageQueue:
+  host: localhost
+

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists