[GitHub] [incubator-iotdb] qiaojialin commented on a change in pull request #929: [IOTDB-565] MQTT Protocol Support

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qiaojialin commented on a change in pull request #929: [IOTDB-565] MQTT Protocol Support
URL: https://github.com/apache/incubator-iotdb/pull/929#discussion_r396080620
 
 

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 File path: mqtt/src/main/java/org/apache/iotdb/mqtt/PublishHandler.java
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 @@ -0,0 +1,93 @@
+/*
+ * 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.iotdb.mqtt;
+
+import io.moquette.interception.AbstractInterceptHandler;
+import io.moquette.interception.messages.InterceptPublishMessage;
+import io.netty.buffer.ByteBuf;
+import io.netty.handler.codec.mqtt.MqttQoS;
+import org.apache.iotdb.service.rpc.thrift.TSStatus;
+import org.apache.iotdb.session.IoTDBSessionException;
+import org.apache.iotdb.session.Session;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * PublishHandler handle the messages from MQTT clients.
+ */
+public class PublishHandler extends AbstractInterceptHandler {
+    private static final Logger LOG = LoggerFactory.getLogger(PublishHandler.class);
+
+    private Session session;
+    private PayloadFormatter payloadFormat;
+    static boolean testing = false;
+
+    public PublishHandler(MQTTBrokerConfig config) {
+        payloadFormat = PayloadFormatManager.getPayloadFormat(config.getPayloadFormatter());
+        initSession(config);
+    }
+
+    public void initSession(MQTTBrokerConfig config) {
+        if (testing) {
+            return;
+        }
+        session = new Session(config.getIotDBHost(), config.getIotDBPort(),
+                config.getIotDBUsername(), config.getIotDBPassword());
+        try {
+            session.open();
+        } catch (IoTDBSessionException e) {
 
 Review comment:
   Hi, the IoTDBSessionException is replaced by StatementExecuteException and IoTDBConnectionException

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