[GitHub] [rocketmq-streams] duhenglucky commented on a change in pull request #132: [RIP-35] Use rocketmq instead of mysql as state store

[GitBox <gi...@apache.org>]

duhenglucky commented on a change in pull request #132:
URL: https://github.com/apache/rocketmq-streams/pull/132#discussion_r814492305



##########
File path: rocketmq-streams-examples/src/main/java/org/apache/rocketmq/streams/examples/checkpoint/RemoteCheckpointExample.java
##########
@@ -1,96 +1,95 @@
-/*
- *
- *  * 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.rocketmq.streams.examples.checkpoint;
-
-import com.alibaba.fastjson.JSONObject;
-import org.apache.rocketmq.streams.client.StreamBuilder;
-import org.apache.rocketmq.streams.client.source.DataStreamSource;
-import org.apache.rocketmq.streams.client.transform.window.Time;
-import org.apache.rocketmq.streams.client.transform.window.TumblingWindow;
-import org.apache.rocketmq.streams.common.component.ComponentCreator;
-import org.apache.rocketmq.streams.common.configure.ConfigureFileKey;
-import org.apache.rocketmq.streams.dbinit.mysql.delegate.DBDelegate;
-import org.apache.rocketmq.streams.dbinit.mysql.delegate.DBDelegateFactory;
-import org.apache.rocketmq.streams.examples.aggregate.ProducerFromFile;
-
-import static org.apache.rocketmq.streams.db.driver.DriverBuilder.DEFALUT_JDBC_DRIVER;
-import static org.apache.rocketmq.streams.examples.aggregate.Constant.NAMESRV_ADDRESS;
-import static org.apache.rocketmq.streams.examples.aggregate.Constant.RMQ_CONSUMER_GROUP_NAME;
-import static org.apache.rocketmq.streams.examples.aggregate.Constant.RMQ_TOPIC;
-
-
-public class RemoteCheckpointExample {
-    //replace with your mysql url, database name can be anyone else.
-    private static final String URL = "jdbc:mysql://localhost:3306/rocketmq_streams";
-    // user name of mysql
-    private static final String USER_NAME = "";
-    //password of mysql
-    private static final String PASSWORD = "";
-
-
-    static  {
-        ComponentCreator.getProperties().put(ConfigureFileKey.CONNECT_TYPE, "DB");
-        ComponentCreator.getProperties().put(ConfigureFileKey.JDBC_URL, URL);
-        ComponentCreator.getProperties().put(ConfigureFileKey.JDBC_DRIVER, DEFALUT_JDBC_DRIVER);
-        ComponentCreator.getProperties().put(ConfigureFileKey.JDBC_USERNAME, USER_NAME);
-        ComponentCreator.getProperties().put(ConfigureFileKey.JDBC_PASSWORD, PASSWORD);
-    }
-
-    public static void main(String[] args) {
-        ProducerFromFile.produce("data.txt",NAMESRV_ADDRESS, RMQ_TOPIC);
-        DBDelegate delegate = DBDelegateFactory.getDelegate();
-        delegate.init();
-
-        try {
-            Thread.sleep(1000 * 3);
-        } catch (InterruptedException e) {
-        }
-        System.out.println("begin streams code.");
-
-        DataStreamSource source = StreamBuilder.dataStream("namespace", "pipeline");
-        source.fromRocketmq(
-                RMQ_TOPIC,
-                RMQ_CONSUMER_GROUP_NAME,
-                false,
-                NAMESRV_ADDRESS)
-                .filter((message) -> {
-                    try {
-                        JSONObject.parseObject((String) message);
-                    } catch (Throwable t) {
-                        // if can not convert to json, discard it.because all operator are base on json.
-                        return true;
-                    }
-                    return false;
-                })
-                //must convert message to json.
-                .map(message -> JSONObject.parseObject((String) message))
-                .window(TumblingWindow.of(Time.seconds(10)))
-                .groupBy("ProjectName","LogStore")
-                .sum("OutFlow", "OutFlow")
-                .sum("InFlow", "InFlow")
-                .count("total")
-                .waterMark(5)
-                .setLocalStorageOnly(false)
-                .toDataSteam()
-                .toPrint(1)
-                .start();
-    }
-
-}
+///*
+// *

Review comment:
       If no need this class file，just delete it directly.




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