├── .github └── workflows │ └── maven.yml ├── .gitignore ├── Dockerfile ├── LICENSE ├── README.md ├── pom.xml └── src ├── main ├── java │ └── com │ │ └── iniesta │ │ ├── com │ │ ├── SimpleDataQuery.java │ │ └── SimpleSubscriber.java │ │ └── flink │ │ └── connector │ │ ├── mqtt │ │ ├── Mqtt2Mysql.java │ │ ├── MqttMessage.java │ │ ├── MqttOutputFormat.java │ │ ├── MqttSink.java │ │ ├── MqttSource.java │ │ ├── MqttWordCount2Mqtt.java │ │ ├── SocketTextStreamWordCount2Mqtt.java │ │ └── WordCount2Mqtt.java │ │ └── mysql │ │ ├── MysqlDao.java │ │ └── MysqlSink.java └── resources │ └── create.sql └── test └── java └── com └── iniesta └── flink └── connector └── mqtt ├── BrokerPublisherManual.java └── DummyTest.java /.github/workflows/maven.yml: -------------------------------------------------------------------------------- 1 | # This workflow will build a Java project with Maven 2 | # For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven 3 | 4 | name: Java CI with Maven 5 | 6 | on: 7 | push: 8 | branches: [ master ] 9 | pull_request: 10 | branches: [ master ] 11 | 12 | jobs: 13 | build: 14 | 15 | runs-on: ubuntu-latest 16 | 17 | steps: 18 | - uses: actions/checkout@v2 19 | - name: Set up JDK 1.8 20 | uses: actions/setup-java@v1 21 | with: 22 | java-version: 1.8 23 | - name: Build with Maven 24 | run: mvn -B package --file pom.xml 25 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | target/ 2 | pom.xml.tag 3 | pom.xml.releaseBackup 4 | pom.xml.versionsBackup 5 | pom.xml.next 6 | release.properties 7 | dependency-reduced-pom.xml 8 | buildNumber.properties 9 | .mvn/timing.properties 10 | .settings 11 | .classpath 12 | .project 13 | /bin/ 14 | /conf.properties 15 | -------------------------------------------------------------------------------- /Dockerfile: -------------------------------------------------------------------------------- 1 | FROM java:8 2 | 3 | USER root 4 | 5 | RUN mkdir /usr/mqtt2mysql 6 | 7 | #RUN curl -Ls https://github.com/ajiniesta/flink-connector-mqtt/releases/download/0.1/flink-connector-mqtt-0.1.jar > /usr/mqtt2mysql/flink-con-mqtt.jar 8 | 9 | COPY target/flink-connector-mqtt-*.jar /usr/mqtt2mysql/flink-con-mqtt.jar 10 | 11 | CMD sleep 15 && java -cp /usr/mqtt2mysql/flink-con-mqtt.jar com.iniesta.flink.connector.mqtt.Mqtt2Mysql --conf /conf/conf.properties 12 | 13 | 14 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. Definitions. 8 | 9 | "License" shall mean the terms and conditions for use, reproduction, 10 | and distribution as defined by Sections 1 through 9 of this document. 11 | 12 | "Licensor" shall mean the copyright owner or entity authorized by 13 | the copyright owner that is granting the License. 14 | 15 | "Legal Entity" shall mean the union of the acting entity and all 16 | other entities that control, are controlled by, or are under common 17 | control with that entity. For the purposes of this definition, 18 | "control" means (i) the power, direct or indirect, to cause the 19 | direction or management of such entity, whether by contract or 20 | otherwise, or (ii) ownership of fifty percent (50%) or more of the 21 | outstanding shares, or (iii) beneficial ownership of such entity. 22 | 23 | "You" (or "Your") shall mean an individual or Legal Entity 24 | exercising permissions granted by this License. 25 | 26 | "Source" form shall mean the preferred form for making modifications, 27 | including but not limited to software source code, documentation 28 | source, and configuration files. 29 | 30 | "Object" form shall mean any form resulting from mechanical 31 | transformation or translation of a Source form, including but 32 | not limited to compiled object code, generated documentation, 33 | and conversions to other media types. 34 | 35 | "Work" shall mean the work of authorship, whether in Source or 36 | Object form, made available under the License, as indicated by a 37 | copyright notice that is included in or attached to the work 38 | (an example is provided in the Appendix below). 39 | 40 | "Derivative Works" shall mean any work, whether in Source or Object 41 | form, that is based on (or derived from) the Work and for which the 42 | editorial revisions, annotations, elaborations, or other modifications 43 | represent, as a whole, an original work of authorship. For the purposes 44 | of this License, Derivative Works shall not include works that remain 45 | separable from, or merely link (or bind by name) to the interfaces of, 46 | the Work and Derivative Works thereof. 47 | 48 | "Contribution" shall mean any work of authorship, including 49 | the original version of the Work and any modifications or additions 50 | to that Work or Derivative Works thereof, that is intentionally 51 | submitted to Licensor for inclusion in the Work by the copyright owner 52 | or by an individual or Legal Entity authorized to submit on behalf of 53 | the copyright owner. For the purposes of this definition, "submitted" 54 | means any form of electronic, verbal, or written communication sent 55 | to the Licensor or its representatives, including but not limited to 56 | communication on electronic mailing lists, source code control systems, 57 | and issue tracking systems that are managed by, or on behalf of, the 58 | Licensor for the purpose of discussing and improving the Work, but 59 | excluding communication that is conspicuously marked or otherwise 60 | designated in writing by the copyright owner as "Not a Contribution." 61 | 62 | "Contributor" shall mean Licensor and any individual or Legal Entity 63 | on behalf of whom a Contribution has been received by Licensor and 64 | subsequently incorporated within the Work. 65 | 66 | 2. Grant of Copyright License. Subject to the terms and conditions of 67 | this License, each Contributor hereby grants to You a perpetual, 68 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable 69 | copyright license to reproduce, prepare Derivative Works of, 70 | publicly display, publicly perform, sublicense, and distribute the 71 | Work and such Derivative Works in Source or Object form. 72 | 73 | 3. Grant of Patent License. Subject to the terms and conditions of 74 | this License, each Contributor hereby grants to You a perpetual, 75 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable 76 | (except as stated in this section) patent license to make, have made, 77 | use, offer to sell, sell, import, and otherwise transfer the Work, 78 | where such license applies only to those patent claims licensable 79 | by such Contributor that are necessarily infringed by their 80 | Contribution(s) alone or by combination of their Contribution(s) 81 | with the Work to which such Contribution(s) was submitted. If You 82 | institute patent litigation against any entity (including a 83 | cross-claim or counterclaim in a lawsuit) alleging that the Work 84 | or a Contribution incorporated within the Work constitutes direct 85 | or contributory patent infringement, then any patent licenses 86 | granted to You under this License for that Work shall terminate 87 | as of the date such litigation is filed. 88 | 89 | 4. Redistribution. You may reproduce and distribute copies of the 90 | Work or Derivative Works thereof in any medium, with or without 91 | modifications, and in Source or Object form, provided that You 92 | meet the following conditions: 93 | 94 | (a) You must give any other recipients of the Work or 95 | Derivative Works a copy of this License; and 96 | 97 | (b) You must cause any modified files to carry prominent notices 98 | stating that You changed the files; and 99 | 100 | (c) You must retain, in the Source form of any Derivative Works 101 | that You distribute, all copyright, patent, trademark, and 102 | attribution notices from the Source form of the Work, 103 | excluding those notices that do not pertain to any part of 104 | the Derivative Works; and 105 | 106 | (d) If the Work includes a "NOTICE" text file as part of its 107 | distribution, then any Derivative Works that You distribute must 108 | include a readable copy of the attribution notices contained 109 | within such NOTICE file, excluding those notices that do not 110 | pertain to any part of the Derivative Works, in at least one 111 | of the following places: within a NOTICE text file distributed 112 | as part of the Derivative Works; within the Source form or 113 | documentation, if provided along with the Derivative Works; or, 114 | within a display generated by the Derivative Works, if and 115 | wherever such third-party notices normally appear. The contents 116 | of the NOTICE file are for informational purposes only and 117 | do not modify the License. You may add Your own attribution 118 | notices within Derivative Works that You distribute, alongside 119 | or as an addendum to the NOTICE text from the Work, provided 120 | that such additional attribution notices cannot be construed 121 | as modifying the License. 122 | 123 | You may add Your own copyright statement to Your modifications and 124 | may provide additional or different license terms and conditions 125 | for use, reproduction, or distribution of Your modifications, or 126 | for any such Derivative Works as a whole, provided Your use, 127 | reproduction, and distribution of the Work otherwise complies with 128 | the conditions stated in this License. 129 | 130 | 5. Submission of Contributions. Unless You explicitly state otherwise, 131 | any Contribution intentionally submitted for inclusion in the Work 132 | by You to the Licensor shall be under the terms and conditions of 133 | this License, without any additional terms or conditions. 134 | Notwithstanding the above, nothing herein shall supersede or modify 135 | the terms of any separate license agreement you may have executed 136 | with Licensor regarding such Contributions. 137 | 138 | 6. Trademarks. This License does not grant permission to use the trade 139 | names, trademarks, service marks, or product names of the Licensor, 140 | except as required for reasonable and customary use in describing the 141 | origin of the Work and reproducing the content of the NOTICE file. 142 | 143 | 7. Disclaimer of Warranty. Unless required by applicable law or 144 | agreed to in writing, Licensor provides the Work (and each 145 | Contributor provides its Contributions) on an "AS IS" BASIS, 146 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 147 | implied, including, without limitation, any warranties or conditions 148 | of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A 149 | PARTICULAR PURPOSE. You are solely responsible for determining the 150 | appropriateness of using or redistributing the Work and assume any 151 | risks associated with Your exercise of permissions under this License. 152 | 153 | 8. Limitation of Liability. In no event and under no legal theory, 154 | whether in tort (including negligence), contract, or otherwise, 155 | unless required by applicable law (such as deliberate and grossly 156 | negligent acts) or agreed to in writing, shall any Contributor be 157 | liable to You for damages, including any direct, indirect, special, 158 | incidental, or consequential damages of any character arising as a 159 | result of this License or out of the use or inability to use the 160 | Work (including but not limited to damages for loss of goodwill, 161 | work stoppage, computer failure or malfunction, or any and all 162 | other commercial damages or losses), even if such Contributor 163 | has been advised of the possibility of such damages. 164 | 165 | 9. Accepting Warranty or Additional Liability. While redistributing 166 | the Work or Derivative Works thereof, You may choose to offer, 167 | and charge a fee for, acceptance of support, warranty, indemnity, 168 | or other liability obligations and/or rights consistent with this 169 | License. However, in accepting such obligations, You may act only 170 | on Your own behalf and on Your sole responsibility, not on behalf 171 | of any other Contributor, and only if You agree to indemnify, 172 | defend, and hold each Contributor harmless for any liability 173 | incurred by, or claims asserted against, such Contributor by reason 174 | of your accepting any such warranty or additional liability. 175 | 176 | END OF TERMS AND CONDITIONS 177 | 178 | APPENDIX: How to apply the Apache License to your work. 179 | 180 | To apply the Apache License to your work, attach the following 181 | boilerplate notice, with the fields enclosed by brackets "[]" 182 | replaced with your own identifying information. (Don't include 183 | the brackets!) The text should be enclosed in the appropriate 184 | comment syntax for the file format. We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # flink-connector-mqtt 2 | Connector to MQTT in Flink 3 | -------------------------------------------------------------------------------- /pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 4.0.0 3 | 4 | com.iniesta 5 | flink-connector-mqtt 6 | 0.2 7 | jar 8 | 9 | Flink Connector for mqtt 10 | http://iniestadev.com 11 | 12 | 13 | UTF-8 14 | 1.3.2 15 | 1.7.7 16 | 1.2.17 17 | 2.10 18 | 1.12 19 | MM.yyyy 20 | ${maven.build.timestamp} 21 | 22 | 23 | 24 | 27 | 28 | flink-connector-mqtt 29 | Flink Connector Mqtt 30 | ${yearMonth} 31 | java 32 | UTF-8 33 | jacoco 34 | 35 | 0.7.2.201409121644 36 | 38 | 1.4 39 | 41 | 42 | 49 | ${project.build.directory} 50 | 51 | jacoco-ut.exec 52 | 54 | ${jacoco.outputDir}/${jacoco.out.ut.file} 55 | 56 | jacoco-it.exec 57 | 59 | ${jacoco.outputDir}/${jacoco.out.it.file} 60 | 61 | 62 | 63 | 64 | 65 | 67 | 68 | 69 | 70 | apache.snapshots 71 | Apache Development Snapshot Repository 72 | https://repository.apache.org/content/repositories/snapshots/ 73 | 74 | false 75 | 76 | 77 | true 78 | 79 | 80 | 81 | 82 | 83 | 84 | org.fusesource.mqtt-client 85 | mqtt-client 86 | ${mqtt-client.version} 87 | 88 | 89 | org.apache.flink 90 | flink-java 91 | ${flink.version} 92 | 93 | 94 | org.apache.flink 95 | flink-streaming-java_2.10 96 | ${flink.version} 97 | 98 | 99 | org.fusesource.hawtbuf 100 | hawtbuf 101 | 1.11 102 | 103 | 104 | org.fusesource.hawtdispatch 105 | hawtdispatch 106 | 1.22 107 | 108 | 109 | org.fusesource.hawtdispatch 110 | hawtdispatch-transport 111 | 1.22 112 | 113 | 114 | mysql 115 | mysql-connector-java 116 | [8.0.16,) 117 | 118 | 119 | postgresql 120 | postgresql 121 | 9.1-901-1.jdbc4 122 | 123 | 124 | junit 125 | junit 126 | 4.12 127 | test 128 | 129 | 130 | 131 | 132 | 133 | 134 | 135 | external.atlassian.jgitflow 136 | jgitflow-maven-plugin 137 | 1.0-m5.1 138 | 139 | 140 | com.jcraft 141 | jsch 142 | 0.1.54 143 | 144 | 145 | 146 | true 147 | [RELEASE] 148 | 149 | 150 | 151 | org.jacoco 152 | jacoco-maven-plugin 153 | ${jacoco.version} 154 | 155 | jacoco.agent.argLine 156 | ${sonar.jacoco.itReportPath} 157 | true 158 | 159 | 160 | 161 | agent 162 | 163 | prepare-agent 164 | 165 | 166 | 167 | 168 | 169 | org.apache.maven.plugins 170 | maven-compiler-plugin 171 | 3.1 172 | 173 | 1.8 174 | 1.8 175 | 176 | 177 | 178 | org.apache.maven.plugins 179 | maven-javadoc-plugin 180 | 3.1.0 181 | 182 | -Xdoclint:none 183 | none 184 | 185 | 186 | 187 | org.apache.maven.plugins 188 | maven-shade-plugin 189 | 2.4.1 190 | 191 | 192 | package 193 | 194 | shade 195 | 196 | 197 | 198 | 199 | 200 | 201 | 202 | 203 | 204 | 205 | 206 | 207 | -------------------------------------------------------------------------------- /src/main/java/com/iniesta/com/SimpleDataQuery.java: -------------------------------------------------------------------------------- 1 | package com.iniesta.com; 2 | 3 | import java.io.FileInputStream; 4 | import java.util.List; 5 | import java.util.Properties; 6 | 7 | import com.iniesta.flink.connector.mysql.MysqlDao; 8 | 9 | public class SimpleDataQuery { 10 | 11 | public static void main(String[] args) throws Exception { 12 | Properties props = new Properties(); 13 | props.load(new FileInputStream(args[0])); 14 | 15 | MysqlDao dao = new MysqlDao(props); 16 | dao.open(); 17 | 18 | List res = dao.testQuery(); 19 | System.out.println(res); 20 | 21 | dao.close(); 22 | 23 | } 24 | } 25 | -------------------------------------------------------------------------------- /src/main/java/com/iniesta/com/SimpleSubscriber.java: -------------------------------------------------------------------------------- 1 | package com.iniesta.com; 2 | 3 | import java.io.FileInputStream; 4 | import java.util.Properties; 5 | 6 | import org.fusesource.mqtt.client.BlockingConnection; 7 | import org.fusesource.mqtt.client.MQTT; 8 | import org.fusesource.mqtt.client.Message; 9 | import org.fusesource.mqtt.client.QoS; 10 | import org.fusesource.mqtt.client.Topic; 11 | 12 | import com.iniesta.flink.connector.mqtt.MqttMessage; 13 | 14 | public class SimpleSubscriber { 15 | 16 | public static void main(String[] args) throws Exception { 17 | Properties props = new Properties(); 18 | props.load(new FileInputStream(args[0])); 19 | 20 | String hostName = props.getProperty("mqtt.host"); 21 | int port = Integer.parseInt(props.getProperty("mqtt.port", "1883")); 22 | String topic = props.getProperty("mqtt.topic"); 23 | 24 | 25 | MQTT mqtt = new MQTT(); 26 | mqtt.setHost(hostName, port); 27 | BlockingConnection blockingConnection = mqtt.blockingConnection(); 28 | try { 29 | blockingConnection.connect(); 30 | } catch(Exception ex) { 31 | System.out.println("[Source] Not connected"); 32 | ex.printStackTrace(); 33 | } 34 | System.out.println("[Source] Connected to mqtt broker"); 35 | 36 | byte[] qoses = blockingConnection.subscribe(new Topic[] {new Topic(topic, QoS.AT_LEAST_ONCE)}); 37 | System.out.println("[Source] Subscribe to " + topic); 38 | 39 | while(blockingConnection.isConnected()) { 40 | Message message = blockingConnection.receive(); 41 | System.out.println("[Source] Receiving message, now process internal message"); 42 | MqttMessage mmsg = new MqttMessage(message.getTopic(), new String(message.getPayload())); 43 | System.out.println("[Source]: " + mmsg); 44 | message.ack(); 45 | System.out.println("[msg] "+ mmsg); 46 | } 47 | blockingConnection.disconnect(); 48 | } 49 | } 50 | -------------------------------------------------------------------------------- /src/main/java/com/iniesta/flink/connector/mqtt/Mqtt2Mysql.java: -------------------------------------------------------------------------------- 1 | package com.iniesta.flink.connector.mqtt; 2 | 3 | import java.io.FileInputStream; 4 | import java.util.Properties; 5 | 6 | /* 7 | * Licensed to the Apache Software Foundation (ASF) under one or more 8 | * contributor license agreements. See the NOTICE file distributed with 9 | * this work for additional information regarding copyright ownership. 10 | * The ASF licenses this file to You under the Apache License, Version 2.0 11 | * (the "License"); you may not use this file except in compliance with 12 | * the License. You may obtain a copy of the License at 13 | * 14 | * http://www.apache.org/licenses/LICENSE-2.0 15 | * 16 | * Unless required by applicable law or agreed to in writing, software 17 | * distributed under the License is distributed on an "AS IS" BASIS, 18 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 19 | * See the License for the specific language governing permissions and 20 | * limitations under the License. 21 | */ 22 | 23 | import org.apache.flink.api.common.functions.FlatMapFunction; 24 | import org.apache.flink.api.java.tuple.Tuple2; 25 | import org.apache.flink.api.java.utils.ParameterTool; 26 | import org.apache.flink.streaming.api.datastream.DataStream; 27 | import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; 28 | import org.apache.flink.util.Collector; 29 | 30 | import com.iniesta.flink.connector.mysql.MysqlSink; 31 | 32 | 33 | public class Mqtt2Mysql { 34 | 35 | // 36 | // Program 37 | // 38 | 39 | public static void main(String[] args) throws Exception { 40 | 41 | ParameterTool pt = ParameterTool.fromArgs(args); 42 | 43 | String properties = pt.getRequired("conf"); 44 | Properties props = new Properties(); 45 | props.load(new FileInputStream(properties)); 46 | 47 | String hostName = props.getProperty("mqtt.host"); 48 | int port = Integer.parseInt(props.getProperty("mqtt.port", "1883")); 49 | String topicIn = props.getProperty("mqtt.topic"); 50 | System.out.println("Properties.... " + props.toString()); 51 | 52 | // set up the execution environment 53 | final StreamExecutionEnvironment env = StreamExecutionEnvironment 54 | .getExecutionEnvironment(); 55 | 56 | // get input data 57 | DataStream text = env.addSource(new MqttSource(hostName, port, topicIn)); 58 | 59 | // DataStream> counts = 60 | // split up the lines in pairs (2-tuples) containing: (word,1) 61 | // text.flatMap(new LineSplitter()) 62 | // group by the tuple field "0" and sum up tuple field "1" 63 | // .keyBy(0) 64 | // .sum(1); 65 | 66 | // text.print(); 67 | // counts.addSink(new MqttSink<>(hostName, topicOut)); 68 | text.addSink(new MysqlSink(props)); 69 | // execute program 70 | int parallelism = Integer.parseInt(props.getProperty("flink.parallelism", "2")); 71 | env.setParallelism(parallelism); 72 | System.out.println("About to execute...."); 73 | env.execute("Mqtt 2 JDBC"); 74 | } 75 | 76 | // 77 | // User Functions 78 | // 79 | 80 | /** 81 | * Implements the string tokenizer that splits sentences into words as a user-defined 82 | * FlatMapFunction. The function takes a line (String) and splits it into 83 | * multiple pairs in the form of "(word,1)" (Tuple2). 84 | */ 85 | @SuppressWarnings("serial") 86 | public static final class LineSplitter implements FlatMapFunction> { 87 | 88 | @Override 89 | public void flatMap(MqttMessage value, Collector> out) { 90 | // normalize and split the line 91 | String[] tokens = value.getPayload().toLowerCase().split("\\W+"); 92 | 93 | // emit the pairs 94 | for (String token : tokens) { 95 | if (token.length() > 0) { 96 | out.collect(new Tuple2(token, 1)); 97 | } 98 | } 99 | } 100 | } 101 | } 102 | -------------------------------------------------------------------------------- /src/main/java/com/iniesta/flink/connector/mqtt/MqttMessage.java: -------------------------------------------------------------------------------- 1 | package com.iniesta.flink.connector.mqtt; 2 | 3 | import java.io.Serializable; 4 | 5 | public class MqttMessage implements Serializable { 6 | 7 | private static final long serialVersionUID = -4673414704450588069L; 8 | 9 | private String topic; 10 | private String payload; 11 | 12 | public MqttMessage() { 13 | } 14 | 15 | public MqttMessage(String topic, String payload) { 16 | super(); 17 | this.topic = topic; 18 | this.payload = payload; 19 | } 20 | 21 | public String getTopic() { 22 | return topic; 23 | } 24 | 25 | public void setTopic(String topic) { 26 | this.topic = topic; 27 | } 28 | 29 | public String getPayload() { 30 | return payload; 31 | } 32 | 33 | public void setPayload(String payload) { 34 | this.payload = payload; 35 | } 36 | 37 | @Override 38 | public int hashCode() { 39 | final int prime = 31; 40 | int result = 1; 41 | result = prime * result + ((payload == null) ? 0 : payload.hashCode()); 42 | result = prime * result + ((topic == null) ? 0 : topic.hashCode()); 43 | return result; 44 | } 45 | 46 | @Override 47 | public boolean equals(Object obj) { 48 | if (this == obj) 49 | return true; 50 | if (obj == null) 51 | return false; 52 | if (getClass() != obj.getClass()) 53 | return false; 54 | MqttMessage other = (MqttMessage) obj; 55 | if (payload == null) { 56 | if (other.payload != null) 57 | return false; 58 | } else if (!payload.equals(other.payload)) 59 | return false; 60 | if (topic == null) { 61 | if (other.topic != null) 62 | return false; 63 | } else if (!topic.equals(other.topic)) 64 | return false; 65 | return true; 66 | } 67 | 68 | @Override 69 | public String toString() { 70 | return "MqttMessage [topic=" + topic + ", payload=" + payload + "]"; 71 | } 72 | 73 | } 74 | -------------------------------------------------------------------------------- /src/main/java/com/iniesta/flink/connector/mqtt/MqttOutputFormat.java: -------------------------------------------------------------------------------- 1 | package com.iniesta.flink.connector.mqtt; 2 | 3 | import java.io.IOException; 4 | import java.net.URISyntaxException; 5 | 6 | import org.apache.flink.api.common.io.RichOutputFormat; 7 | import org.apache.flink.configuration.Configuration; 8 | import org.fusesource.mqtt.client.BlockingConnection; 9 | import org.fusesource.mqtt.client.MQTT; 10 | import org.fusesource.mqtt.client.QoS; 11 | 12 | public class MqttOutputFormat extends RichOutputFormat{ 13 | 14 | private static final long serialVersionUID = -260008582961487797L; 15 | 16 | private transient BlockingConnection blockingConnection; 17 | private transient MQTT mqtt; 18 | private String topic; 19 | private QoS qos; 20 | private boolean retain; 21 | private String host; 22 | private int port; 23 | 24 | public MqttOutputFormat(String host, String topic) { 25 | this(host, 1883, topic, QoS.AT_LEAST_ONCE, false); 26 | } 27 | 28 | public MqttOutputFormat(String host, int port, String topic) { 29 | this(host, port, topic, QoS.AT_LEAST_ONCE, false); 30 | } 31 | 32 | public MqttOutputFormat(String host, int port, String topic, QoS qos, boolean retain) { 33 | this.host = host; 34 | this.port = port; 35 | this.topic = topic; 36 | this.qos = qos; 37 | this.retain = retain; 38 | } 39 | 40 | @Override 41 | public void close() throws IOException { 42 | System.out.println("closing...."); 43 | try { 44 | if(blockingConnection!=null) { 45 | blockingConnection.disconnect(); 46 | } 47 | } catch (Exception e) { 48 | e.printStackTrace(); 49 | } 50 | } 51 | 52 | @Override 53 | public void configure(Configuration arg0) { 54 | System.out.println("configuring output format...."); 55 | } 56 | 57 | @Override 58 | public void open(int arg0, int arg1) throws IOException { 59 | System.out.println("opening...."+ arg0 + " " + arg1); 60 | mqtt = new MQTT(); 61 | try { 62 | mqtt.setHost(host, port); 63 | blockingConnection = mqtt.blockingConnection(); 64 | blockingConnection.connect(); 65 | } catch (URISyntaxException e) { 66 | e.printStackTrace(); 67 | } catch (Exception e) { 68 | e.printStackTrace(); 69 | } 70 | 71 | } 72 | 73 | @Override 74 | public void writeRecord(IT record) throws IOException { 75 | System.out.println("writing record...." + record); 76 | byte[] payload = record.toString().getBytes(); 77 | try { 78 | blockingConnection.publish(topic, payload, qos, retain); 79 | } catch (Exception e) { 80 | e.printStackTrace(); 81 | } 82 | } 83 | 84 | } 85 | -------------------------------------------------------------------------------- /src/main/java/com/iniesta/flink/connector/mqtt/MqttSink.java: -------------------------------------------------------------------------------- 1 | package com.iniesta.flink.connector.mqtt; 2 | 3 | import org.apache.flink.configuration.Configuration; 4 | import org.apache.flink.streaming.api.functions.sink.RichSinkFunction; 5 | import org.fusesource.mqtt.client.BlockingConnection; 6 | import org.fusesource.mqtt.client.MQTT; 7 | import org.fusesource.mqtt.client.QoS; 8 | 9 | public class MqttSink extends RichSinkFunction { 10 | 11 | private static final long serialVersionUID = 7883296716671354462L; 12 | 13 | private transient BlockingConnection blockingConnection; 14 | private String topic; 15 | private QoS qos; 16 | private boolean retain; 17 | 18 | private String host; 19 | 20 | private int port; 21 | 22 | public MqttSink(String host, String topic) { 23 | this(host, 1883, topic, QoS.AT_LEAST_ONCE, false); 24 | } 25 | 26 | 27 | public MqttSink(String host, int port, String topic) { 28 | this(host, port, topic, QoS.AT_LEAST_ONCE, false); 29 | } 30 | 31 | public MqttSink(String host, int port, String topic, QoS qos, boolean retain) { 32 | this.host = host; 33 | this.port = port; 34 | this.topic = topic; 35 | this.qos = qos; 36 | this.retain = retain; 37 | } 38 | 39 | @Override 40 | public void invoke(T event) throws Exception { 41 | byte[] payload = event.toString().getBytes(); 42 | blockingConnection.publish(topic, payload, qos, retain); 43 | } 44 | 45 | @Override 46 | public void close() throws Exception { 47 | super.close(); 48 | blockingConnection.disconnect(); 49 | } 50 | 51 | @Override 52 | public void open(Configuration parameters) throws Exception { 53 | super.open(parameters); 54 | MQTT mqtt = new MQTT(); 55 | mqtt.setHost(host, port); 56 | blockingConnection = mqtt.blockingConnection(); 57 | blockingConnection.connect(); 58 | } 59 | 60 | 61 | 62 | } 63 | -------------------------------------------------------------------------------- /src/main/java/com/iniesta/flink/connector/mqtt/MqttSource.java: -------------------------------------------------------------------------------- 1 | package com.iniesta.flink.connector.mqtt; 2 | 3 | import org.apache.flink.streaming.api.functions.source.RichSourceFunction; 4 | import org.fusesource.mqtt.client.BlockingConnection; 5 | import org.fusesource.mqtt.client.MQTT; 6 | import org.fusesource.mqtt.client.Message; 7 | import org.fusesource.mqtt.client.QoS; 8 | import org.fusesource.mqtt.client.Topic; 9 | 10 | public class MqttSource extends RichSourceFunction{ 11 | 12 | private String host; 13 | private int port; 14 | private String topic; 15 | private QoS qos; 16 | private boolean retain; 17 | 18 | public MqttSource(String host, String topic) { 19 | this(host, 1883, topic, QoS.AT_LEAST_ONCE, false); 20 | } 21 | 22 | public MqttSource(String host, int port, String topic) { 23 | this(host, port, topic, QoS.AT_LEAST_ONCE, false); 24 | } 25 | 26 | public MqttSource(String host, int port, String topic, QoS qos, boolean retain) { 27 | this.host = host; 28 | this.port = port; 29 | this.topic = topic; 30 | this.qos = qos; 31 | this.retain = retain; 32 | } 33 | 34 | @Override 35 | public void cancel() { 36 | // TODO Auto-generated method stub 37 | 38 | } 39 | 40 | @Override 41 | public void run(SourceContext sourceContext) throws Exception { 42 | System.out.println("[Source] Running source"); 43 | MQTT mqtt = new MQTT(); 44 | mqtt.setHost(host, port); 45 | BlockingConnection blockingConnection = mqtt.blockingConnection(); 46 | blockingConnection.connect(); 47 | System.out.println("[Source] Connected to mqtt broker"); 48 | 49 | byte[] qoses = blockingConnection.subscribe(new Topic[] {new Topic(topic, qos)}); 50 | System.out.println("[Source] Subscribed to " + topic); 51 | 52 | while(blockingConnection.isConnected()) { 53 | Message message = blockingConnection.receive(); 54 | MqttMessage mmsg = new MqttMessage(message.getTopic(), new String(message.getPayload())); 55 | message.ack(); 56 | sourceContext.collect(mmsg); 57 | } 58 | blockingConnection.disconnect(); 59 | } 60 | 61 | } 62 | -------------------------------------------------------------------------------- /src/main/java/com/iniesta/flink/connector/mqtt/MqttWordCount2Mqtt.java: -------------------------------------------------------------------------------- 1 | package com.iniesta.flink.connector.mqtt; 2 | 3 | /* 4 | * Licensed to the Apache Software Foundation (ASF) under one or more 5 | * contributor license agreements. See the NOTICE file distributed with 6 | * this work for additional information regarding copyright ownership. 7 | * The ASF licenses this file to You under the Apache License, Version 2.0 8 | * (the "License"); you may not use this file except in compliance with 9 | * the License. You may obtain a copy of the License at 10 | * 11 | * http://www.apache.org/licenses/LICENSE-2.0 12 | * 13 | * Unless required by applicable law or agreed to in writing, software 14 | * distributed under the License is distributed on an "AS IS" BASIS, 15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 | * See the License for the specific language governing permissions and 17 | * limitations under the License. 18 | */ 19 | 20 | import org.apache.flink.api.common.functions.FlatMapFunction; 21 | import org.apache.flink.api.java.tuple.Tuple2; 22 | import org.apache.flink.streaming.api.datastream.DataStream; 23 | import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; 24 | import org.apache.flink.util.Collector; 25 | 26 | public class MqttWordCount2Mqtt { 27 | 28 | // 29 | // Program 30 | // 31 | 32 | public static void main(String[] args) throws Exception { 33 | 34 | if (args.length != 3) { 35 | System.err.println("USAGE:\nMqttWordCount2Mqtt "); 36 | return; 37 | } 38 | 39 | String hostName = args[0]; 40 | String topicIn = args[1]; 41 | String topicOut = args[2]; 42 | 43 | // set up the execution environment 44 | final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment(); 45 | 46 | // get input data 47 | DataStream text = env.addSource(new MqttSource(hostName, topicIn)); 48 | 49 | DataStream> counts = 50 | // split up the lines in pairs (2-tuples) containing: (word,1) 51 | text.flatMap(new LineSplitter()) 52 | // group by the tuple field "0" and sum up tuple field "1" 53 | .keyBy(0).sum(1); 54 | 55 | // counts.print(); 56 | counts.addSink(new MqttSink<>(hostName, topicOut)); 57 | 58 | // execute program 59 | env.execute("Java WordCount from SocketTextStream Example"); 60 | } 61 | 62 | // 63 | // User Functions 64 | // 65 | 66 | /** 67 | * Implements the string tokenizer that splits sentences into words as a 68 | * user-defined FlatMapFunction. The function takes a line (String) and splits 69 | * it into multiple pairs in the form of "(word,1)" (Tuple2). 70 | */ 71 | @SuppressWarnings("serial") 72 | public static final class LineSplitter implements FlatMapFunction> { 73 | 74 | @Override 75 | public void flatMap(MqttMessage value, Collector> out) { 76 | // normalize and split the line 77 | String[] tokens = value.getPayload().toLowerCase().split("\\W+"); 78 | 79 | // emit the pairs 80 | for (String token : tokens) { 81 | if (token.length() > 0) { 82 | out.collect(new Tuple2(token, 1)); 83 | } 84 | } 85 | } 86 | } 87 | } 88 | -------------------------------------------------------------------------------- /src/main/java/com/iniesta/flink/connector/mqtt/SocketTextStreamWordCount2Mqtt.java: -------------------------------------------------------------------------------- 1 | package com.iniesta.flink.connector.mqtt; 2 | 3 | import org.apache.flink.api.common.functions.FlatMapFunction; 4 | import org.apache.flink.api.java.tuple.Tuple2; 5 | import org.apache.flink.streaming.api.datastream.DataStream; 6 | import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; 7 | import org.apache.flink.util.Collector; 8 | 9 | public class SocketTextStreamWordCount2Mqtt { 10 | 11 | // 12 | // Program 13 | // 14 | 15 | public static void main(String[] args) throws Exception { 16 | 17 | if (args.length != 2) { 18 | System.err.println("USAGE:\nSocketTextStreamWordCount "); 19 | return; 20 | } 21 | 22 | String hostName = args[0]; 23 | Integer port = Integer.parseInt(args[1]); 24 | 25 | // set up the execution environment 26 | final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment(); 27 | 28 | // get input data 29 | DataStream text = env.socketTextStream(hostName, port); 30 | 31 | DataStream> counts = 32 | // split up the lines in pairs (2-tuples) containing: (word,1) 33 | text.flatMap(new LineSplitter()) 34 | // group by the tuple field "0" and sum up tuple field "1" 35 | .keyBy(0).sum(1); 36 | 37 | // counts.print(); 38 | counts.addSink(new MqttSink<>("cydonia", "/samples")); 39 | 40 | // execute program 41 | env.execute("Java WordCount from SocketTextStream Example"); 42 | } 43 | 44 | // 45 | // User Functions 46 | // 47 | 48 | /** 49 | * Implements the string tokenizer that splits sentences into words as a 50 | * user-defined FlatMapFunction. The function takes a line (String) and splits 51 | * it into multiple pairs in the form of "(word,1)" (Tuple2). 52 | */ 53 | public static final class LineSplitter implements FlatMapFunction> { 54 | 55 | @Override 56 | public void flatMap(String value, Collector> out) { 57 | // normalize and split the line 58 | String[] tokens = value.toLowerCase().split("\\W+"); 59 | 60 | // emit the pairs 61 | for (String token : tokens) { 62 | if (token.length() > 0) { 63 | out.collect(new Tuple2(token, 1)); 64 | } 65 | } 66 | } 67 | } 68 | } 69 | -------------------------------------------------------------------------------- /src/main/java/com/iniesta/flink/connector/mqtt/WordCount2Mqtt.java: -------------------------------------------------------------------------------- 1 | package com.iniesta.flink.connector.mqtt; 2 | 3 | /** 4 | * Licensed to the Apache Software Foundation (ASF) under one 5 | * or more contributor license agreements. See the NOTICE file 6 | * distributed with this work for additional information 7 | * regarding copyright ownership. The ASF licenses this file 8 | * to you under the Apache License, Version 2.0 (the 9 | * "License"); you may not use this file except in compliance 10 | * with the License. You may obtain a copy of the License at 11 | * 12 | * http://www.apache.org/licenses/LICENSE-2.0 13 | * 14 | * Unless required by applicable law or agreed to in writing, software 15 | * distributed under the License is distributed on an "AS IS" BASIS, 16 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 | * See the License for the specific language governing permissions and 18 | * limitations under the License. 19 | */ 20 | 21 | import org.apache.flink.api.java.DataSet; 22 | import org.apache.flink.api.java.ExecutionEnvironment; 23 | import org.apache.flink.api.java.operators.DataSink; 24 | import org.apache.flink.api.common.functions.FlatMapFunction; 25 | import org.apache.flink.api.java.tuple.Tuple2; 26 | import org.apache.flink.util.Collector; 27 | 28 | public class WordCount2Mqtt { 29 | 30 | // 31 | // Program 32 | // 33 | 34 | public static void main(String[] args) throws Exception { 35 | 36 | // set up the execution environment 37 | final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment(); 38 | 39 | // get input data 40 | DataSet text = env.fromElements("To be, or not to be,--that is the question:--", 41 | "Whether 'tis nobler in the mind to suffer", "The slings and arrows of outrageous fortune", 42 | "Or to take arms against a sea of troubles,"); 43 | 44 | DataSet> counts = 45 | // split up the lines in pairs (2-tuples) containing: (word,1) 46 | text.flatMap(new LineSplitter()) 47 | // group by the tuple field "0" and sum up tuple field "1" 48 | .groupBy(0).sum(1); 49 | 50 | // execute and print result 51 | // counts.print(); 52 | 53 | DataSink> dataSink = counts.output(new MqttOutputFormat<>("cydonia", 1883, "/samples")); 54 | 55 | env.execute(); 56 | 57 | } 58 | 59 | // 60 | // User Functions 61 | // 62 | 63 | /** 64 | * Implements the string tokenizer that splits sentences into words as a 65 | * user-defined FlatMapFunction. The function takes a line (String) and splits 66 | * it into multiple pairs in the form of "(word,1)" (Tuple2). 67 | */ 68 | public static final class LineSplitter implements FlatMapFunction> { 69 | 70 | @Override 71 | public void flatMap(String value, Collector> out) { 72 | // normalize and split the line 73 | String[] tokens = value.toLowerCase().split("\\W+"); 74 | 75 | // emit the pairs 76 | for (String token : tokens) { 77 | if (token.length() > 0) { 78 | out.collect(new Tuple2(token, 1)); 79 | } 80 | } 81 | } 82 | } 83 | } 84 | -------------------------------------------------------------------------------- /src/main/java/com/iniesta/flink/connector/mysql/MysqlDao.java: -------------------------------------------------------------------------------- 1 | package com.iniesta.flink.connector.mysql; 2 | 3 | import java.io.Serializable; 4 | import java.sql.Connection; 5 | import java.sql.DriverManager; 6 | import java.sql.PreparedStatement; 7 | import java.sql.ResultSet; 8 | import java.sql.SQLException; 9 | import java.sql.Statement; 10 | import java.util.ArrayList; 11 | import java.util.List; 12 | import java.util.Properties; 13 | 14 | import org.slf4j.Logger; 15 | import org.slf4j.LoggerFactory; 16 | 17 | import com.iniesta.flink.connector.mqtt.MqttMessage; 18 | 19 | public class MysqlDao implements Serializable { 20 | 21 | private static final Logger logger = LoggerFactory.getLogger(MysqlDao.class); 22 | 23 | private String url; 24 | private String user; 25 | private String pass; 26 | private String driver; 27 | private transient Connection connection; 28 | 29 | private final String defaultInsertQuery = "insert into messages(topic, payload, ts) values (?,?,now())"; 30 | private final String defaultCreateQuery = "create table if not exists messages(id int not null auto_increment primary key, topic varchar(255), payload varchar(10000),ts datetime)"; 31 | private String sqlCreate; 32 | private String sqlInsert; 33 | 34 | public MysqlDao(Properties props) { 35 | 36 | url = props.getProperty("jdbc.url"); 37 | user = props.getProperty("jdbc.user"); 38 | pass = props.getProperty("jdbc.pass"); 39 | driver = props.getProperty("jdbc.driver"); 40 | sqlCreate = props.getProperty("jdbc.sql.create", defaultCreateQuery); 41 | sqlInsert = props.getProperty("jdbc.sql.insert", defaultInsertQuery); 42 | } 43 | 44 | public void open() { 45 | if (connection == null) { 46 | try { 47 | Class.forName(driver); 48 | connection = DriverManager.getConnection(url, user, pass); 49 | createTable(); 50 | } catch (ClassNotFoundException e) { 51 | e.printStackTrace(); 52 | } catch (SQLException e) { 53 | e.printStackTrace(); 54 | } 55 | } 56 | } 57 | 58 | public void close() { 59 | if (connection != null) { 60 | logger.debug("Destroying connection to: {}:{}", url, user); 61 | try { 62 | connection.close(); 63 | } catch (SQLException e) { 64 | e.printStackTrace(); 65 | } 66 | } 67 | connection = null; 68 | } 69 | 70 | public void process(MqttMessage msg) { 71 | insertData(msg); 72 | } 73 | 74 | private static String escapeSQL(String s) { 75 | return s.replaceAll("'", "\\'"); 76 | } 77 | 78 | private void insertData(MqttMessage msg) { 79 | try { 80 | PreparedStatement insertStmnt = connection.prepareStatement(sqlInsert ); 81 | insertStmnt.setString(1, escapeSQL(msg.getTopic())); 82 | insertStmnt.setString(2, escapeSQL(msg.getPayload())); 83 | insertStmnt.execute(); 84 | } catch (SQLException e) { 85 | logger.error("Error during the updating of the event", e); 86 | } 87 | } 88 | 89 | private void createTable() { 90 | try { 91 | Statement statement = connection.createStatement(); 92 | statement.executeUpdate(sqlCreate); 93 | }catch(SQLException e) { 94 | logger.error("Error during the creation of the table", e); 95 | } 96 | } 97 | 98 | public List testQuery() throws SQLException { 99 | List output = new ArrayList<>(); 100 | PreparedStatement ps = connection.prepareStatement("select id, a, b from data"); 101 | ResultSet rs = ps.executeQuery(); 102 | while(rs!=null && rs.next()) { 103 | String res = String.format("(%s,%s,%s)", rs.getInt(1), rs.getInt(2), rs.getInt(3)); 104 | output.add(res); 105 | } 106 | return output; 107 | } 108 | } 109 | 110 | -------------------------------------------------------------------------------- /src/main/java/com/iniesta/flink/connector/mysql/MysqlSink.java: -------------------------------------------------------------------------------- 1 | package com.iniesta.flink.connector.mysql; 2 | 3 | import java.util.Properties; 4 | 5 | import org.apache.flink.configuration.Configuration; 6 | import org.apache.flink.streaming.api.functions.sink.RichSinkFunction; 7 | 8 | import com.iniesta.flink.connector.mqtt.MqttMessage; 9 | 10 | public class MysqlSink extends RichSinkFunction { 11 | 12 | private MysqlDao mysqlDao; 13 | 14 | public MysqlSink(Properties props) { 15 | mysqlDao = new MysqlDao(props); 16 | } 17 | 18 | @Override 19 | public void invoke(MqttMessage msg) throws Exception { 20 | mysqlDao.process(msg); 21 | } 22 | 23 | @Override 24 | public void open(Configuration parameters) throws Exception { 25 | super.open(parameters); 26 | mysqlDao.open(); 27 | } 28 | 29 | @Override 30 | public void close() throws Exception { 31 | super.close(); 32 | mysqlDao.close(); 33 | } 34 | 35 | } 36 | -------------------------------------------------------------------------------- /src/main/resources/create.sql: -------------------------------------------------------------------------------- 1 | create table if not exists messages( 2 | id int not null auto_increment primary key, 3 | topic varchar(255), 4 | payload varchar(10000), 5 | ts datetime 6 | ) -------------------------------------------------------------------------------- /src/test/java/com/iniesta/flink/connector/mqtt/BrokerPublisherManual.java: -------------------------------------------------------------------------------- 1 | package com.iniesta.flink.connector.mqtt; 2 | 3 | import java.net.URISyntaxException; 4 | import java.util.Random; 5 | import java.util.concurrent.ExecutorService; 6 | import java.util.concurrent.Executors; 7 | 8 | import org.fusesource.mqtt.client.BlockingConnection; 9 | import org.fusesource.mqtt.client.MQTT; 10 | import org.fusesource.mqtt.client.Message; 11 | import org.fusesource.mqtt.client.QoS; 12 | import org.fusesource.mqtt.client.Topic; 13 | 14 | public class BrokerPublisherManual { 15 | 16 | public static void main(String[] args) throws Exception { 17 | Runnable runnable = new Runnable() { 18 | 19 | @Override 20 | public void run() { 21 | try { 22 | publish(1000); 23 | } catch (Exception e) { 24 | e.printStackTrace(); 25 | } 26 | } 27 | }; 28 | ExecutorService pool = Executors.newFixedThreadPool(3); 29 | for (int i = 0; i < 50; i++) { 30 | pool.submit(runnable); 31 | } 32 | 33 | } 34 | 35 | 36 | 37 | private static void publish(int num) throws URISyntaxException, Exception { 38 | MQTT mqtt = new MQTT(); 39 | mqtt.setHost("cydonia", 1883); 40 | 41 | Random random = new Random(); 42 | BlockingConnection blockingConnection = mqtt.blockingConnection(); 43 | 44 | blockingConnection.connect(); 45 | for (int i = 0; i < num; i++) { 46 | String payload = "Hello " + random.nextInt(10); 47 | blockingConnection.publish("/samples/in", payload.getBytes(), QoS.AT_LEAST_ONCE, false); 48 | } 49 | 50 | blockingConnection.disconnect(); 51 | } 52 | } 53 | -------------------------------------------------------------------------------- /src/test/java/com/iniesta/flink/connector/mqtt/DummyTest.java: -------------------------------------------------------------------------------- 1 | package com.iniesta.flink.connector.mqtt; 2 | 3 | import org.junit.Assert; 4 | 5 | public class DummyTest { 6 | 7 | public void test1() { 8 | Assert.assertTrue(true); 9 | } 10 | } 11 | --------------------------------------------------------------------------------