[GitHub] [zeppelin] felixcheung commented on a change in pull request #3387: [ZEPPELIN-3778] Cluster synchronize notes & authorization

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felixcheung commented on a change in pull request #3387: [ZEPPELIN-3778] Cluster synchronize notes & authorization
URL: https://github.com/apache/zeppelin/pull/3387#discussion_r296438187
 
 

 ##########
 File path: zeppelin-server/src/test/java/org/apache/zeppelin/cluster/ClusterAuthEventListenerTest.java
 ##########
 @@ -0,0 +1,71 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.zeppelin.cluster;
+
+import com.google.gson.Gson;
+import com.google.gson.reflect.TypeToken;
+import org.apache.zeppelin.cluster.event.ClusterEventListener;
+import org.apache.zeppelin.cluster.event.ClusterMessage;
+import org.apache.zeppelin.notebook.Note;
+import org.apache.zeppelin.notebook.Paragraph;
+import org.apache.zeppelin.user.AuthenticationInfo;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Map;
+import java.util.Set;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.fail;
+
+public class ClusterAuthEventListenerTest implements ClusterEventListener {
+  private static Logger LOGGER = LoggerFactory.getLogger(ClusterAuthEventListenerTest.class);
+
+  public String receiveMsg = null;
+
+  @Override
+  public void onClusterEvent(String msg) {
+    receiveMsg = msg;
+    LOGGER.info("onClusterEvent : {}", msg);
+    ClusterMessage message = ClusterMessage.deserializeMessage(msg);
+
+    String noteId = message.get("noteId");
+    String user = message.get("user");
+    String jsonSet = message.get("set");
+    Gson gson = new Gson();
+    Set<String> set  = gson.fromJson(jsonSet, new TypeToken<Set<String>>() {
+    }.getType());
 
 Review comment:
   can this be joined to the line before? formatting is a bit strange. 

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