WebSocket增加changeUserid功能

src/org/redkale/net/http/WebSocket.java

@@ -429,6 +429,18 @@ public abstract class WebSocket<G extends Serializable, T> {
         return _engine.node.getRpcNodeWebSocketAddresses(userid);
     }
 
+    /**
+     * 更改本WebSocket的userid
+     *
+     * @param newuserid 新用户ID，不能为null
+     *
+     * @return CompletableFuture
+     */
+    public CompletableFuture<Void> changeUserid(final G newuserid) {
+        if (newuserid == null) throw new NullPointerException("newuserid is null");
+        return _engine.changeUserid(this, newuserid);
+    }
+
     /**
      * 强制关闭用户的所有WebSocket
      *

src/org/redkale/net/http/WebSocketEngine.java

@@ -149,6 +149,31 @@ public class WebSocketEngine {
         }
     }
 
+    @Comment("更改WebSocket的userid")
+    CompletableFuture<Void> changeUserid(WebSocket socket, final Serializable newuserid) {
+        if (newuserid == null) throw new NullPointerException("newuserid is null");
+        final Serializable olduserid = socket._userid;
+        socket._userid = newuserid;
+        if (single) {
+            websockets.remove(olduserid);
+            websockets.put(newuserid, socket);
+        } else { //非线程安全， 在常规场景中无需锁
+            List<WebSocket> oldlist = websockets2.get(olduserid);
+            if (oldlist != null) {
+                oldlist.remove(socket);
+                if (oldlist.isEmpty()) websockets2.remove(olduserid);
+            }
+            List<WebSocket> newlist = websockets2.get(newuserid);
+            if (newlist == null) {
+                newlist = new CopyOnWriteArrayList<>();
+                websockets2.put(newuserid, newlist);
+            }
+            newlist.add(socket);
+        }
+        if (node != null) return node.changeUserid(olduserid, newuserid);
+        return CompletableFuture.completedFuture(null);
+    }
+
     @Comment("强制关闭本地用户的WebSocket")
     public int forceCloseLocalWebSocket(Serializable userid) {
         if (single) {

src/org/redkale/net/http/WebSocketNode.java

@@ -86,6 +86,8 @@ public abstract class WebSocketNode {
 
     protected abstract CompletableFuture<Void> disconnect(Serializable userid, InetSocketAddress addr);
 
+    protected abstract CompletableFuture<Void> changeUserid(Serializable fromuserid, Serializable touserid, InetSocketAddress addr);
+
     protected abstract CompletableFuture<Integer> forceCloseWebSocket(Serializable userid, InetSocketAddress addr);
 
     //--------------------------------------------------------------------------------
@@ -99,6 +101,11 @@ public abstract class WebSocketNode {
         return disconnect(userid, localSncpAddress);
     }
 
+    final CompletableFuture<Void> changeUserid(Serializable olduserid, final Serializable newuserid) {
+        if (logger.isLoggable(Level.FINEST)) logger.finest(localSncpAddress + " receive websocket changeUserid event (from " + olduserid + " to " + newuserid + " on " + (this.localEngine == null ? null : this.localEngine.getEngineid()) + ").");
+        return changeUserid(olduserid, newuserid, localSncpAddress);
+    }
+
     //--------------------------------------------------------------------------------
     /**
      * 获取目标地址 <br>

src/org/redkale/service/WebSocketNodeService.java

@@ -61,7 +61,7 @@ public class WebSocketNodeService extends WebSocketNode implements Service {
     /**
      * 当用户连接到节点，需要更新到CacheSource
      *
-     * @param userid   String
+     * @param userid   Serializable
      * @param sncpAddr InetSocketAddress
      *
      * @return 无返回值
@@ -78,7 +78,7 @@ public class WebSocketNodeService extends WebSocketNode implements Service {
     /**
      * 当用户从一个节点断掉了所有的连接，需要从CacheSource中删除
      *
-     * @param userid   String
+     * @param userid   Serializable
      * @param sncpAddr InetSocketAddress
      *
      * @return 无返回值
@@ -91,10 +91,27 @@ public class WebSocketNodeService extends WebSocketNode implements Service {
         return future;
     }
 
+    /**
+     * 更改用户ID，需要更新到CacheSource
+     *
+     * @param olduserid Serializable
+     * @param newuserid Serializable
+     * @param sncpAddr  InetSocketAddress
+     *
+     * @return 无返回值
+     */
+    @Override
+    public CompletableFuture<Void> changeUserid(Serializable olduserid, Serializable newuserid, InetSocketAddress sncpAddr) {
+        CompletableFuture<Void> future = sncpNodeAddresses.appendSetItemAsync(SOURCE_SNCP_USERID_PREFIX + newuserid, sncpAddr);
+        future = future.thenAccept((a) -> sncpNodeAddresses.removeSetItemAsync(SOURCE_SNCP_USERID_PREFIX + olduserid, sncpAddr));
+        if (logger.isLoggable(Level.FINEST)) logger.finest(WebSocketNodeService.class.getSimpleName() + ".event: " + olduserid + " changeUserid to " + newuserid + " from " + sncpAddr);
+        return future;
+    }
+
     /**
      * 强制关闭用户的WebSocket
      *
-     * @param userid   String
+     * @param userid   Serializable
      * @param sncpAddr InetSocketAddress
      *
      * @return 无返回值