├── .classpath ├── .gitignore ├── .project ├── .settings ├── org.eclipse.core.resources.prefs ├── org.eclipse.jdt.core.prefs └── org.eclipse.m2e.core.prefs ├── Binary └── Bridge.jar ├── LICENSE ├── README.md ├── pom.xml ├── src ├── main │ ├── java │ │ ├── com │ │ │ └── m2mci │ │ │ │ └── mqttKafkaBridge │ │ │ │ ├── Bridge.java │ │ │ │ └── CommandLineParser.java │ │ └── example │ │ │ └── producer │ │ │ └── SimplePartitioner.java │ └── resources │ │ ├── .gitkeep │ │ └── log4j.properties └── test │ ├── java │ └── .gitkeep │ └── resources │ └── .gitkeep └── target ├── classes ├── .gitkeep ├── META-INF │ ├── MANIFEST.MF │ └── maven │ │ └── com.m2mci │ │ └── mqttKafkaBridge │ │ ├── pom.properties │ │ └── pom.xml ├── com │ └── m2mci │ │ └── mqttKafkaBridge │ │ ├── Bridge.class │ │ └── CommandLineParser.class ├── example │ └── producer │ │ └── SimplePartitioner.class └── log4j.properties ├── maven-archiver └── pom.properties ├── maven-status └── maven-compiler-plugin │ ├── compile │ └── default-compile │ │ ├── createdFiles.lst │ │ └── inputFiles.lst │ └── testCompile │ └── default-testCompile │ └── inputFiles.lst ├── mqttKafkaBridge-0.1.0-jar-with-dependencies.jar └── test-classes └── .gitkeep /.classpath: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.class 2 | 3 | # Mobile Tools for Java (J2ME) 4 | .mtj.tmp/ 5 | 6 | # Package Files # 7 | *.jar 8 | *.war 9 | *.ear 10 | 11 | # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml 12 | hs_err_pid* 13 | -------------------------------------------------------------------------------- /.project: -------------------------------------------------------------------------------- 1 | 2 | 3 | mqttKafkaBridge 4 | 5 | 6 | 7 | 8 | 9 | org.eclipse.jdt.core.javabuilder 10 | 11 | 12 | 13 | 14 | org.eclipse.m2e.core.maven2Builder 15 | 16 | 17 | 18 | 19 | 20 | org.eclipse.jdt.core.javanature 21 | org.eclipse.m2e.core.maven2Nature 22 | 23 | 24 | -------------------------------------------------------------------------------- /.settings/org.eclipse.core.resources.prefs: -------------------------------------------------------------------------------- 1 | eclipse.preferences.version=1 2 | encoding//src/main/java=UTF-8 3 | encoding//src/main/resources=UTF-8 4 | encoding//src/test/java=UTF-8 5 | encoding//src/test/resources=UTF-8 6 | encoding/=UTF-8 7 | -------------------------------------------------------------------------------- /.settings/org.eclipse.jdt.core.prefs: -------------------------------------------------------------------------------- 1 | eclipse.preferences.version=1 2 | org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.7 3 | org.eclipse.jdt.core.compiler.compliance=1.7 4 | org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning 5 | org.eclipse.jdt.core.compiler.source=1.7 6 | -------------------------------------------------------------------------------- /.settings/org.eclipse.m2e.core.prefs: -------------------------------------------------------------------------------- 1 | activeProfiles= 2 | eclipse.preferences.version=1 3 | resolveWorkspaceProjects=false 4 | version=1 5 | -------------------------------------------------------------------------------- /Binary/Bridge.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/sapien-pixel/MQTTKafkaBridge/fec806d4bd3d7a75cbb6b601e89d00515761d8fb/Binary/Bridge.jar -------------------------------------------------------------------------------- /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. 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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 | # MQTTKafkaBridge 2 | 3 | Bridge which consumes MQTT messages and republishes them on Kafka on the same topic. Kafka does not support '/' as the topic name. 4 | 5 | ## Usage 6 | 7 | $ java -jar Bridge.jar [options...] 8 | 9 | Where `options` are: 10 | 11 | --help (-h) : Show help 12 | --id VAL : MQTT Client ID 13 | --topics VAL : MQTT topic filters (comma-separated) 14 | --uri VAL : MQTT Server URI 15 | --zk VAL : Zookeeper connect string 16 | 17 | If you don't specify any command-line options, it uses the following defaults: 18 | 19 | id: mqttKafkaBridge 20 | topics: '#' (all topics) 21 | uri: tcp://localhost:1883 22 | zk: localhost:2181 23 | 24 | ***Note***: you can't run more than one bridge using the default settings, since two clients cannot connect to the same MQTT server with the same client ID. Additionally, you will get multiple messages published to Kafka for each message published to MQTT. If you wish to run multiple instances, you'll need to divide up the topics among the instances, and make sure to give them different IDs. 25 | 26 | ## Logging 27 | `mqttKafkaBridge` uses [log4j](http://logging.apache.org/log4j/2.x/) for logging, as do the [Paho](http://www.eclipse.org/paho/) and [Kafka](http://kafka.apache.org/) libraries it uses. There is a default `log4j.properties` file packaged with the jar which simply prints all messages of level `INFO` or greater to the console. If you want to customize logging, simply create your own `log4j.properties` file, and start up `mqttKafkaBridge` as follows: 28 | 29 | $ java -Dlog4j.configuration=file:///path/to/log4j.properties -jar mqttKafkaBridge.jar [options...] 30 | 31 | ## Binary 32 | You can directly run the binary `Bridge.jar` which is available under Binary Folder. The binary build using Java Runtime 1.7. 33 | -------------------------------------------------------------------------------- /pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 4.0.0 5 | com.m2mci 6 | mqttKafkaBridge 7 | 0.1.0 8 | 9 | 11 | 12 | 13 | scm:git:https://bitbucket.org/m2mconnections/mqttKafkaBridge.git 14 | 15 | 16 | 18 | 19 | 20 | 21 | 22 | log4j 23 | log4j 24 | 1.2.15 25 | 26 | 27 | com.sun.jdmk 28 | jmxtools 29 | 30 | 31 | com.sun.jmx 32 | jmxri 33 | 34 | 35 | javax.jms 36 | jms 37 | 38 | 39 | 40 | 41 | junit 42 | junit 43 | 4.11 44 | 45 | 46 | org.mockito 47 | mockito-core 48 | 1.9.5 49 | 50 | 51 | org.eclipse.paho 52 | org.eclipse.paho.client.mqttv3 53 | 1.0.2 54 | 55 | 56 | org.apache.kafka 57 | kafka_2.9.2 58 | 0.8.1.1 59 | compile 60 | 61 | 62 | jmxri 63 | com.sun.jmx 64 | 65 | 66 | jms 67 | javax.jms 68 | 69 | 70 | jmxtools 71 | com.sun.jdmk 72 | 73 | 74 | 75 | 76 | args4j 77 | args4j 78 | 2.0.25 79 | 80 | 81 | com.101tec 82 | zkclient 83 | 0.3 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | org.apache.maven.plugins 93 | maven-compiler-plugin 94 | 3.1 95 | 96 | 1.7 97 | 1.7 98 | 99 | 100 | 101 | 102 | org.apache.maven.plugins 103 | maven-release-plugin 104 | 2.4.1 105 | 106 | 107 | org.apache.maven.plugins 108 | maven-javadoc-plugin 109 | 2.9 110 | 111 | 112 | org.apache.maven.plugins 113 | maven-deploy-plugin 114 | 2.7 115 | 116 | 117 | org.apache.maven.plugins 118 | maven-source-plugin 119 | 2.2.1 120 | 121 | 122 | 123 | org.jacoco 124 | jacoco-maven-plugin 125 | 0.6.2.201302030002 126 | 127 | 128 | maven-assembly-plugin 129 | 130 | 131 | 132 | com.m2mci.mqttKafkaBridge.Bridge 133 | 134 | 135 | 136 | jar-with-dependencies 137 | 138 | 139 | 140 | 141 | 142 | 143 | 144 | 145 | 146 | m2m-snapshot 147 | m2m-artifactory1-snapshots 148 | http://24.14.16.189:8081/artifactory/libs-snapshot-local 149 | 150 | 151 | m2m-release 152 | m2m-artifactory1-releases 153 | http://24.14.16.189:8081/artifactory/libs-release-local 154 | 155 | 156 | 157 | 158 | 159 | 161 | UTF-8 162 | UTF-8 163 | 164 | - 165 | -------------------------------------------------------------------------------- /src/main/java/com/m2mci/mqttKafkaBridge/Bridge.java: -------------------------------------------------------------------------------- 1 | package com.m2mci.mqttKafkaBridge; 2 | 3 | import java.util.Properties; 4 | 5 | import kafka.javaapi.producer.Producer; 6 | import kafka.message.Message; 7 | import kafka.producer.KeyedMessage; 8 | import kafka.producer.ProducerConfig; 9 | 10 | import org.apache.log4j.Logger; 11 | import org.eclipse.paho.client.mqttv3.IMqttDeliveryToken; 12 | import org.eclipse.paho.client.mqttv3.IMqttToken; 13 | import org.eclipse.paho.client.mqttv3.MqttAsyncClient; 14 | import org.eclipse.paho.client.mqttv3.MqttCallback; 15 | import org.eclipse.paho.client.mqttv3.MqttException; 16 | import org.eclipse.paho.client.mqttv3.MqttMessage; 17 | import org.kohsuke.args4j.CmdLineException; 18 | 19 | public class Bridge implements MqttCallback { 20 | private Logger logger = Logger.getLogger(this.getClass().getName()); 21 | private MqttAsyncClient mqtt; 22 | private Producer kafkaProducer; 23 | 24 | private void connect(String serverURI, String clientId, String zkConnect) throws MqttException { 25 | 26 | mqtt = new MqttAsyncClient(serverURI, clientId); 27 | mqtt.setCallback(this); 28 | IMqttToken token = mqtt.connect(); 29 | Properties props = new Properties(); 30 | 31 | //Updated based on Kafka v0.8.1.1 32 | props.put("metadata.broker.list", "localhost:9092"); 33 | props.put("serializer.class", "kafka.serializer.StringEncoder"); 34 | props.put("partitioner.class", "example.producer.SimplePartitioner"); 35 | props.put("request.required.acks", "1"); 36 | 37 | ProducerConfig config = new ProducerConfig(props); 38 | kafkaProducer = new Producer(config); 39 | token.waitForCompletion(); 40 | logger.info("Connected to MQTT and Kafka"); 41 | } 42 | 43 | private void reconnect() throws MqttException { 44 | IMqttToken token = mqtt.connect(); 45 | token.waitForCompletion(); 46 | } 47 | 48 | private void subscribe(String[] mqttTopicFilters) throws MqttException { 49 | int[] qos = new int[mqttTopicFilters.length]; 50 | for (int i = 0; i < qos.length; ++i) { 51 | qos[i] = 0; 52 | } 53 | mqtt.subscribe(mqttTopicFilters, qos); 54 | } 55 | 56 | @Override 57 | public void connectionLost(Throwable cause) { 58 | logger.warn("Lost connection to MQTT server", cause); 59 | while (true) { 60 | try { 61 | logger.info("Attempting to reconnect to MQTT server"); 62 | reconnect(); 63 | logger.info("Reconnected to MQTT server, resuming"); 64 | return; 65 | } catch (MqttException e) { 66 | logger.warn("Reconnect failed, retrying in 10 seconds", e); 67 | } 68 | try { 69 | Thread.sleep(10000); 70 | } catch (InterruptedException e) { 71 | } 72 | } 73 | } 74 | 75 | @Override 76 | public void deliveryComplete(IMqttDeliveryToken token) { 77 | // TODO Auto-generated method stub 78 | 79 | } 80 | 81 | @Override 82 | public void messageArrived(String topic, MqttMessage message) throws Exception { 83 | 84 | byte[] payload = message.getPayload(); 85 | System.out.println(new String(message.getPayload())); 86 | //Updated based on Kafka v0.8.1.1 87 | KeyedMessage data = new KeyedMessage(topic, new String(message.getPayload())); 88 | kafkaProducer.send(data); 89 | } 90 | 91 | /** 92 | * @param args 93 | */ 94 | public static void main(String args[]) { 95 | CommandLineParser parser = null; 96 | try { 97 | parser = new CommandLineParser(); 98 | parser.parse(args); 99 | Bridge bridge = new Bridge(); 100 | bridge.connect(parser.getServerURI(), parser.getClientId(), parser.getZkConnect()); 101 | bridge.subscribe(parser.getMqttTopicFilters()); 102 | } catch (MqttException e) { 103 | e.printStackTrace(System.err); 104 | } catch (CmdLineException e) { 105 | System.err.println(e.getMessage()); 106 | parser.printUsage(System.err); 107 | } 108 | } 109 | } -------------------------------------------------------------------------------- /src/main/java/com/m2mci/mqttKafkaBridge/CommandLineParser.java: -------------------------------------------------------------------------------- 1 | package com.m2mci.mqttKafkaBridge; 2 | 3 | import java.io.OutputStream; 4 | import java.io.PrintStream; 5 | 6 | import org.kohsuke.args4j.CmdLineException; 7 | import org.kohsuke.args4j.CmdLineParser; 8 | import org.kohsuke.args4j.Option; 9 | 10 | public class CommandLineParser { 11 | private static final String ALL_MQTT_TOPICS = "#"; 12 | private static final String DEFAULT_ZOOKEEPER_CONNECT = "localhost:2181"; 13 | private static final String DEFAULT_MQTT_SERVER_URI = "tcp://localhost:1883"; 14 | 15 | @Option(name="--id", usage="MQTT Client ID") 16 | private String clientId = "mqttKafkaBridge"; 17 | 18 | @Option(name="--uri", usage="MQTT Server URI") 19 | private String serverURI = DEFAULT_MQTT_SERVER_URI; 20 | 21 | @Option(name="--zk", usage="Zookeeper connect string") 22 | private String zkConnect = DEFAULT_ZOOKEEPER_CONNECT; 23 | 24 | @Option(name="--topics", usage="MQTT topic filters (comma-separated)") 25 | private String mqttTopicFilters = ALL_MQTT_TOPICS; 26 | 27 | @Option(name="--help", aliases="-h", usage="Show help") 28 | private boolean showHelp = false; 29 | 30 | private CmdLineParser parser = new CmdLineParser(this); 31 | 32 | public String getClientId() { 33 | return clientId; 34 | } 35 | 36 | public String getServerURI() { 37 | return serverURI; 38 | } 39 | 40 | public String getZkConnect() { 41 | return zkConnect; 42 | } 43 | 44 | public String[] getMqttTopicFilters() { 45 | return mqttTopicFilters.split(","); 46 | } 47 | 48 | public void parse(String[] args) throws CmdLineException { 49 | parser.parseArgument(args); 50 | if (showHelp) { 51 | printUsage(System.out); 52 | System.exit(0); 53 | } 54 | } 55 | 56 | public void printUsage(OutputStream out) { 57 | PrintStream stream = new PrintStream(out); 58 | stream.println("java " + Bridge.class.getName() + " [options...]"); 59 | parser.printUsage(out); 60 | } 61 | } 62 | -------------------------------------------------------------------------------- /src/main/java/example/producer/SimplePartitioner.java: -------------------------------------------------------------------------------- 1 | package example.producer; 2 | 3 | import kafka.producer.Partitioner; 4 | import kafka.utils.VerifiableProperties; 5 | 6 | //Added Class to support Kafka v0.8.1.1 7 | public class SimplePartitioner implements Partitioner { 8 | public SimplePartitioner (VerifiableProperties props) { 9 | 10 | } 11 | 12 | public int partition(Object key, int a_numPartitions) { 13 | int partition = 0; 14 | String stringKey = (String) key; 15 | int offset = stringKey.lastIndexOf('.'); 16 | if (offset > 0) { 17 | partition = Integer.parseInt( stringKey.substring(offset+1)) % a_numPartitions; 18 | } 19 | return partition; 20 | } 21 | } 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-------------------------------------------------------------------------------- 1 | Manifest-Version: 1.0 2 | Build-Jdk: 1.7.0_95 3 | Built-By: dhruv 4 | Created-By: Maven Integration for Eclipse 5 | 6 | -------------------------------------------------------------------------------- /target/classes/META-INF/maven/com.m2mci/mqttKafkaBridge/pom.properties: -------------------------------------------------------------------------------- 1 | #Generated by Maven Integration for Eclipse 2 | #Wed Apr 27 14:08:34 PDT 2016 3 | version=0.1.0 4 | groupId=com.m2mci 5 | m2e.projectName=mqttKafkaBridge 6 | m2e.projectLocation=/home/dhruv/workspace/Mars/mqttKafkaBridge 7 | artifactId=mqttKafkaBridge 8 | -------------------------------------------------------------------------------- /target/classes/META-INF/maven/com.m2mci/mqttKafkaBridge/pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 4.0.0 5 | com.m2mci 6 | mqttKafkaBridge 7 | 0.1.0 8 | 9 | 11 | 12 | 13 | scm:git:https://bitbucket.org/m2mconnections/mqttKafkaBridge.git 14 | 15 | 16 | 18 | 19 | 20 | 21 | 22 | log4j 23 | log4j 24 | 1.2.15 25 | 26 | 27 | com.sun.jdmk 28 | jmxtools 29 | 30 | 31 | com.sun.jmx 32 | jmxri 33 | 34 | 35 | javax.jms 36 | jms 37 | 38 | 39 | 40 | 41 | junit 42 | junit 43 | 4.11 44 | 45 | 46 | org.mockito 47 | mockito-core 48 | 1.9.5 49 | 50 | 51 | org.eclipse.paho 52 | org.eclipse.paho.client.mqttv3 53 | 1.0.2 54 | 55 | 56 | org.apache.kafka 57 | kafka_2.9.2 58 | 0.8.1.1 59 | compile 60 | 61 | 62 | jmxri 63 | com.sun.jmx 64 | 65 | 66 | jms 67 | javax.jms 68 | 69 | 70 | jmxtools 71 | com.sun.jdmk 72 | 73 | 74 | 75 | 76 | args4j 77 | args4j 78 | 2.0.25 79 | 80 | 81 | com.101tec 82 | zkclient 83 | 0.3 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | org.apache.maven.plugins 93 | maven-compiler-plugin 94 | 3.1 95 | 96 | 1.7 97 | 1.7 98 | 99 | 100 | 101 | 102 | org.apache.maven.plugins 103 | maven-release-plugin 104 | 2.4.1 105 | 106 | 107 | 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