Create a local player when a link is created

Author: duncte123

src/main/kotlin/dev/arbjerg/lavalink/client/LavalinkClient.kt

@@ -114,6 +114,7 @@ class LavalinkClient(val userId: Long) : Closeable, Disposable {
         if (!linkMap.containsKey(guildId)) {
             val bestNode = loadBalancer.selectNode(region)
             linkMap[guildId] = Link(guildId, bestNode)
+            bestNode.playerCache[guildId] = newPlayer(bestNode, guildId.toString())
         }
 
         return linkMap[guildId]!!

src/main/kotlin/dev/arbjerg/lavalink/client/LavalinkNode.kt

@@ -28,6 +28,7 @@ import reactor.kotlin.core.publisher.toMono
 import java.io.Closeable
 import java.io.IOException
 import java.net.URI
+import java.util.concurrent.ConcurrentHashMap
 import java.util.function.Consumer
 import java.util.function.UnaryOperator
 
@@ -66,7 +67,7 @@ class LavalinkNode(
     /**
      * A local player cache, allows us to not call the rest client every time we need a player.
      */
-    internal val playerCache = mutableMapOf<Long, LavalinkPlayer>()
+    internal val playerCache = ConcurrentHashMap<Long, LavalinkPlayer>()
 
     override fun dispose() {
         close()
@@ -127,7 +128,7 @@ class LavalinkNode(
     fun getPlayer(guildId: Long): Mono<LavalinkPlayer> {
         if (!available) return Mono.error(IllegalStateException("Node is not available"))
 
-        if (guildId in playerCache) {
+        if (playerCache.containsKey(guildId)) {
             return playerCache[guildId].toMono()
         }
 
@@ -168,12 +169,12 @@ class LavalinkNode(
         return rest.destroyPlayer(guildId)
             .doOnSuccess {
                 removeCachedPlayer(guildId)
+                lavalink.removeDestroyedLink(guildId)
             }
     }
 
     internal fun removeCachedPlayer(guildId: Long) {
         playerCache.remove(guildId)
-        lavalink.removeDestroyedLink(guildId)
     }
 
     /**
@@ -385,13 +386,7 @@ class LavalinkNode(
         }
     }
 
-    internal fun getCachedPlayer(guildId: Long): LavalinkPlayer? {
-        if (guildId in playerCache) {
-            return playerCache[guildId]
-        }
-
-        return null
-    }
+    internal fun getCachedPlayer(guildId: Long): LavalinkPlayer? = playerCache[guildId]
 
     override fun equals(other: Any?): Boolean {
         if (this === other) return true

src/main/kotlin/dev/arbjerg/lavalink/client/LavalinkPlayer.kt

@@ -5,6 +5,16 @@ import dev.arbjerg.lavalink.client.protocol.toCustom
 import dev.arbjerg.lavalink.protocol.v4.*
 import kotlin.math.min
 
+internal fun newPlayer(node: LavalinkNode, guildId: String) = LavalinkPlayer(node, Player(
+    guildId = guildId,
+    track = null,
+    volume = 100,
+    paused = false,
+    state = PlayerState(0, 0, false, -1),
+    voice = VoiceState("", "", ""),
+    filters = Filters()
+))
+
 /**
  * Represents a player that is tied to a guild.
  */

src/main/kotlin/dev/arbjerg/lavalink/internal/LavalinkSocket.kt

@@ -70,13 +70,11 @@ class LavalinkSocket(private val node: LavalinkNode) : WebSocketListener(), Clos
                 val update = event as Message.PlayerUpdateEvent
                 val idLong = update.guildId.toLong()
 
-                if (idLong in node.playerCache) {
-                    node.playerCache[idLong]!!.state = update.state
-                    node.lavalink.getLinkIfCached(idLong)?.state = if (update.state.connected) {
-                        LinkState.CONNECTED
-                    } else {
-                        LinkState.DISCONNECTED
-                    }
+                node.getCachedPlayer(idLong)?.state = update.state
+                node.lavalink.getLinkIfCached(idLong)?.state = if (update.state.connected) {
+                    LinkState.CONNECTED
+                } else {
+                    LinkState.DISCONNECTED
                 }
             }
 

testbot/src/main/java/me/duncte123/testbot/Main.java

@@ -46,8 +46,8 @@ private static void registerLavalinkNodes(LavalinkClient client) {
             ),*/
 
             client.addNode(
-                "Mac-mini",
-                URI.create("ws://mac-mini.local.duncte123.lgbt:2333"),
+                "Pi-local",
+                URI.create("ws://pi.local.duncte123.lgbt:2333"),
                 "youshallnotpass",
                 RegionGroup.US
             )
@@ -79,10 +79,11 @@ private static void registerLavalinkListeners(LavalinkClient client) {
             final LavalinkNode node = event.getNode();
 
             LOG.info(
-                "Node '{}' has stats, current players: {}/{}",
+                "Node '{}' has stats, current players: {}/{} (link count {})",
                 node.getName(),
                 event.getPlayingPlayers(),
-                event.getPlayers()
+                event.getPlayers(),
+                client.getLinks().size()
             );
         });