├── .gitignore ├── LICENSE ├── README.md ├── demokafka.0.10.1.0 ├── pom.xml └── src │ ├── main │ ├── java │ │ └── com │ │ │ └── jasongj │ │ │ └── kafka │ │ │ ├── connect │ │ │ ├── ConsoleSinkConnect.java │ │ │ ├── ConsoleSinkTask.java │ │ │ ├── ConsoleSourceConnect.java │ │ │ └── ConsoleSourceTask.java │ │ │ ├── consumer │ │ │ ├── DemoConsumerAssign.java │ │ │ ├── DemoConsumerAutoCommit.java │ │ │ ├── DemoConsumerCommitCallback.java │ │ │ ├── DemoConsumerCommitPartition.java │ │ │ ├── DemoConsumerFlowControl.java │ │ │ ├── DemoConsumerInterceptor.java │ │ │ ├── DemoConsumerManualCommit.java │ │ │ └── DemoConsumerRebalance.java │ │ │ ├── producer │ │ │ ├── EvenProducerInterceptor.java │ │ │ ├── HashPartitioner.java │ │ │ ├── ProducerDemo.java │ │ │ └── ProducerDemoCallback.java │ │ │ └── stream │ │ │ ├── PurchaseAnalysis.java │ │ │ ├── WordCountDSL.java │ │ │ ├── WordCountProcessor.java │ │ │ ├── WordCountTopology.java │ │ │ ├── model │ │ │ ├── Item.java │ │ │ ├── Order.java │ │ │ └── User.java │ │ │ ├── producer │ │ │ ├── ItemProducer.java │ │ │ ├── OrderProducer.java │ │ │ └── UserProducer.java │ │ │ ├── serdes │ │ │ ├── GenericDeserializer.java │ │ │ ├── GenericSerializer.java │ │ │ └── SerdesFactory.java │ │ │ └── timeextractor │ │ │ └── OrderTimestampExtractor.java │ └── resources │ │ ├── items.csv │ │ ├── log4j.properties │ │ ├── orders.csv │ │ └── users.csv │ └── test │ └── java │ └── com │ └── jasongj │ └── kafka │ └── AppTest.java ├── demokafka.0.8.2.2 ├── pom.xml └── src │ ├── main │ ├── java │ │ └── com │ │ │ └── jasongj │ │ │ └── kafka │ │ │ ├── DemoHighLevelConsumer.java │ │ │ ├── DemoLowLevelConsumer.java │ │ │ ├── HashPartitioner.java │ │ │ ├── ProducerDemo.java │ │ │ └── RoundRobinPartitioner.java │ └── resources │ │ └── log4j.properties │ └── test │ └── java │ └── com │ └── jasongj │ └── kafka │ └── AppTest.java └── pom.xml /.gitignore: -------------------------------------------------------------------------------- 1 | target 2 | bin 3 | .DS_Store 4 | .classpath 5 | .project 6 | .settings 7 | .idea 8 | *.iml 9 | -------------------------------------------------------------------------------- /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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2 | 3 | import java.util.ArrayList; 4 | import java.util.HashMap; 5 | import java.util.List; 6 | import java.util.Map; 7 | 8 | import org.apache.kafka.common.config.ConfigDef; 9 | import org.apache.kafka.common.utils.AppInfoParser; 10 | import org.apache.kafka.connect.connector.Task; 11 | import org.apache.kafka.connect.sink.SinkConnector; 12 | 13 | public class ConsoleSinkConnect extends SinkConnector { 14 | 15 | @Override 16 | public ConfigDef config() { 17 | return null; 18 | } 19 | 20 | @Override 21 | public void start(Map config) { 22 | } 23 | 24 | @Override 25 | public void stop() { 26 | 27 | } 28 | 29 | @Override 30 | public Class taskClass() { 31 | return ConsoleSinkTask.class; 32 | } 33 | 34 | @Override 35 | public List> taskConfigs(int maxTasks) { 36 | List> tasks = new ArrayList>(); 37 | Map task = new HashMap(); 38 | tasks.add(task); 39 | return tasks; 40 | } 41 | 42 | @Override 43 | public String version() { 44 | return AppInfoParser.getVersion(); 45 | } 46 | 47 | 48 | } 49 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/connect/ConsoleSinkTask.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.connect; 2 | 3 | import java.io.PrintStream; 4 | import java.util.Collection; 5 | import java.util.Map; 6 | 7 | import org.apache.kafka.clients.consumer.OffsetAndMetadata; 8 | import org.apache.kafka.common.TopicPartition; 9 | import org.apache.kafka.common.utils.AppInfoParser; 10 | import org.apache.kafka.connect.sink.SinkRecord; 11 | import org.apache.kafka.connect.sink.SinkTask; 12 | 13 | public class ConsoleSinkTask extends SinkTask { 14 | 15 | private PrintStream printStream; 16 | 17 | @Override 18 | public String version() { 19 | return AppInfoParser.getVersion(); 20 | } 21 | 22 | @Override 23 | public void flush(Map offsets) { 24 | if(printStream != null){ 25 | printStream.flush(); 26 | } 27 | } 28 | 29 | @Override 30 | public void put(Collection records) { 31 | records.forEach(printStream::println); 32 | } 33 | 34 | @Override 35 | public void start(Map config) { 36 | this.printStream = System.out; 37 | } 38 | 39 | @Override 40 | public void stop() { 41 | if(printStream != null){ 42 | printStream.close(); 43 | } 44 | 45 | } 46 | 47 | } 48 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/connect/ConsoleSourceConnect.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.connect; 2 | 3 | import java.util.ArrayList; 4 | import java.util.HashMap; 5 | import java.util.List; 6 | import java.util.Map; 7 | 8 | import org.apache.commons.lang3.StringUtils; 9 | import org.apache.kafka.common.config.ConfigDef; 10 | import org.apache.kafka.common.config.ConfigDef.Importance; 11 | import org.apache.kafka.common.config.ConfigDef.Type; 12 | import org.apache.kafka.common.utils.AppInfoParser; 13 | import org.apache.kafka.connect.connector.Task; 14 | import org.apache.kafka.connect.errors.ConnectException; 15 | import org.apache.kafka.connect.source.SourceConnector; 16 | 17 | public class ConsoleSourceConnect extends SourceConnector { 18 | 19 | private static final ConfigDef CONFIG_DEF = new ConfigDef().define("topic", Type.STRING, Importance.HIGH, 20 | "Target topic name"); 21 | private static final String TOPIC_CONF_NAME = "topic"; 22 | 23 | private String topic; 24 | 25 | @Override 26 | public ConfigDef config() { 27 | return CONFIG_DEF; 28 | } 29 | 30 | @Override 31 | public void start(Map props) { 32 | topic = props.get(TOPIC_CONF_NAME); 33 | if(StringUtils.isBlank(topic)) { 34 | throw new ConnectException("Topic must be configured"); 35 | } 36 | } 37 | 38 | @Override 39 | public void stop() { 40 | 41 | } 42 | 43 | @Override 44 | public Class taskClass() { 45 | return ConsoleSourceTask.class; 46 | } 47 | 48 | @Override 49 | public List> taskConfigs(int maxTasks) { 50 | List> tasks = new ArrayList>(); 51 | Map task = new HashMap(); 52 | task.put(TOPIC_CONF_NAME, topic); 53 | tasks.add(task); 54 | return tasks; 55 | } 56 | 57 | @Override 58 | public String version() { 59 | return AppInfoParser.getVersion(); 60 | } 61 | 62 | } 63 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/connect/ConsoleSourceTask.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.connect; 2 | 3 | import java.io.BufferedReader; 4 | import java.io.IOException; 5 | import java.io.InputStream; 6 | import java.io.InputStreamReader; 7 | import java.util.ArrayList; 8 | import java.util.Collections; 9 | import java.util.List; 10 | import java.util.Map; 11 | 12 | import org.apache.kafka.connect.data.Schema; 13 | import org.apache.kafka.connect.source.SourceRecord; 14 | import org.apache.kafka.connect.source.SourceTask; 15 | 16 | public class ConsoleSourceTask extends SourceTask { 17 | 18 | private InputStream inputStream; 19 | private String topic; 20 | 21 | @Override 22 | public String version() { 23 | return null; 24 | } 25 | 26 | @Override 27 | public List poll() throws InterruptedException { 28 | try{ 29 | BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream)); 30 | List records = new ArrayList(); 31 | while(reader.ready()){ 32 | String line = reader.readLine(); 33 | SourceRecord record = new SourceRecord(Collections.singletonMap("SYSTEM_IN", null), Collections.singletonMap("OFFSET", 0), topic, Schema.STRING_SCHEMA, line); 34 | } 35 | return records; 36 | } catch(IOException ex) { 37 | return null; 38 | } 39 | } 40 | 41 | @Override 42 | public void start(Map conf) { 43 | inputStream = System.in; 44 | topic = conf.get("topic"); 45 | } 46 | 47 | @Override 48 | public void stop() { 49 | 50 | } 51 | 52 | 53 | } 54 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/consumer/DemoConsumerAssign.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.consumer; 2 | 3 | import java.util.Arrays; 4 | import java.util.Properties; 5 | 6 | import org.apache.kafka.clients.consumer.ConsumerRecords; 7 | import org.apache.kafka.clients.consumer.KafkaConsumer; 8 | import org.apache.kafka.common.TopicPartition; 9 | import org.apache.kafka.common.serialization.StringDeserializer; 10 | 11 | public class DemoConsumerAssign { 12 | 13 | public static void main(String[] args) { 14 | args = new String[] { "kafka0:9092", "topic1", "group1", "consumer3" }; 15 | if (args == null || args.length != 4) { 16 | System.err.println( 17 | "Usage:\n\tjava -jar kafka_consumer.jar ${bootstrap_server} ${topic_name} ${group_name} ${client_id}"); 18 | System.exit(1); 19 | } 20 | String bootstrap = args[0]; 21 | String topic = args[1]; 22 | String groupid = args[2]; 23 | String clientid = args[3]; 24 | 25 | Properties props = new Properties(); 26 | props.put("bootstrap.servers", bootstrap); 27 | props.put("group.id", groupid); 28 | props.put("client.id", clientid); 29 | props.put("enable.auto.commit", "true"); 30 | props.put("auto.commit.interval.ms", "1000"); 31 | props.put("key.deserializer", StringDeserializer.class.getName()); 32 | props.put("value.deserializer", StringDeserializer.class.getName()); 33 | props.put("auto.offset.reset", "earliest"); 34 | KafkaConsumer consumer = new KafkaConsumer<>(props); 35 | consumer.assign(Arrays.asList(new TopicPartition(topic, 0), new TopicPartition(topic, 1))); 36 | while (true) { 37 | ConsumerRecords records = consumer.poll(100); 38 | records.forEach(record -> { 39 | System.out.printf("client : %s , topic: %s , partition: %d , offset = %d, key = %s, value = %s%n", clientid, record.topic(), 40 | record.partition(), record.offset(), record.key(), record.value()); 41 | }); 42 | } 43 | } 44 | 45 | } 46 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/consumer/DemoConsumerAutoCommit.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.consumer; 2 | 3 | import java.util.Arrays; 4 | import java.util.Properties; 5 | 6 | import org.apache.kafka.clients.consumer.ConsumerRecords; 7 | import org.apache.kafka.clients.consumer.KafkaConsumer; 8 | import org.apache.kafka.common.serialization.IntegerDeserializer; 9 | import org.apache.kafka.common.serialization.LongDeserializer; 10 | import org.apache.kafka.common.serialization.StringDeserializer; 11 | 12 | public class DemoConsumerAutoCommit { 13 | 14 | public static void main(String[] args) { 15 | args = new String[] { "kafka0:19092", "words", "group1", "consumer2" }; 16 | if (args == null || args.length != 4) { 17 | System.err.println( 18 | "Usage:\n\tjava -jar kafka_consumer.jar ${bootstrap_server} ${topic_name} ${group_name} ${client_id}"); 19 | System.exit(1); 20 | } 21 | String bootstrap = args[0]; 22 | String topic = args[1]; 23 | String groupid = args[2]; 24 | String clientid = args[3]; 25 | 26 | Properties props = new Properties(); 27 | props.put("bootstrap.servers", bootstrap); 28 | props.put("group.id", groupid); 29 | props.put("client.id", clientid); 30 | props.put("enable.auto.commit", "true"); 31 | props.put("auto.commit.interval.ms", "1000"); 32 | props.put("auto.offset.reset", "earliest"); 33 | props.put("key.deserializer", StringDeserializer.class.getName()); 34 | props.put("value.deserializer", StringDeserializer.class.getName()); 35 | KafkaConsumer consumer = new KafkaConsumer<>(props); 36 | consumer.subscribe(Arrays.asList(topic)); 37 | while (true) { 38 | ConsumerRecords records = consumer.poll(100); 39 | records.forEach(record -> { 40 | System.out.printf("client : %s , topic: %s , partition: %d , offset = %d, key = %s, value = %s%n", clientid, record.topic(), 41 | record.partition(), record.offset(), record.key(), record.value()); 42 | }); 43 | } 44 | } 45 | 46 | } 47 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/consumer/DemoConsumerCommitCallback.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.consumer; 2 | 3 | import java.util.Arrays; 4 | import java.util.Map; 5 | import java.util.Properties; 6 | import java.util.concurrent.atomic.AtomicLong; 7 | 8 | import org.apache.kafka.clients.consumer.ConsumerRecords; 9 | import org.apache.kafka.clients.consumer.KafkaConsumer; 10 | import org.apache.kafka.clients.consumer.OffsetAndMetadata; 11 | import org.apache.kafka.common.TopicPartition; 12 | import org.apache.kafka.common.serialization.StringDeserializer; 13 | 14 | public class DemoConsumerCommitCallback { 15 | 16 | public static void main(String[] args) throws Exception { 17 | args = new String[] { "kafka0:9092", "topic1", "group11", "consumer2" }; 18 | if (args == null || args.length != 4) { 19 | System.err.println( 20 | "Usage:\n\tjava -jar kafka_consumer.jar ${bootstrap_server} ${topic_name} ${group_name} ${client_id}"); 21 | System.exit(1); 22 | } 23 | String bootstrap = args[0]; 24 | String topic = args[1]; 25 | String groupid = args[2]; 26 | String clientid = args[3]; 27 | 28 | Properties props = new Properties(); 29 | props.put("bootstrap.servers", bootstrap); 30 | props.put("group.id", groupid); 31 | props.put("enable.auto.commit", "false"); 32 | props.put("key.deserializer", StringDeserializer.class.getName()); 33 | props.put("value.deserializer", StringDeserializer.class.getName()); 34 | props.put("max.poll.interval.ms", "300000"); 35 | props.put("max.poll.records", "500"); 36 | props.put("auto.offset.reset", "earliest"); 37 | KafkaConsumer consumer = new KafkaConsumer<>(props); 38 | consumer.subscribe(Arrays.asList(topic)); 39 | AtomicLong atomicLong = new AtomicLong(); 40 | while (true) { 41 | ConsumerRecords records = consumer.poll(100); 42 | records.forEach(record -> { 43 | System.out.printf("client : %s , topic: %s , partition: %d , offset = %d, key = %s, value = %s%n", 44 | clientid, record.topic(), record.partition(), record.offset(), record.key(), record.value()); 45 | if (atomicLong.get() % 10 == 0) 46 | consumer.commitAsync((Map offsets, Exception exception) -> { 47 | offsets.forEach((TopicPartition partition, OffsetAndMetadata offset) -> 48 | System.out.printf("Commit %s-%d-%d %n", partition.topic(), partition.partition(), offset.offset()) 49 | ); 50 | if(null != null ) { 51 | exception.printStackTrace(); 52 | } 53 | }); 54 | }); 55 | } 56 | } 57 | 58 | } 59 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/consumer/DemoConsumerCommitPartition.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.consumer; 2 | 3 | import java.util.Arrays; 4 | import java.util.Collections; 5 | import java.util.List; 6 | import java.util.Properties; 7 | import java.util.concurrent.atomic.AtomicLong; 8 | 9 | import org.apache.kafka.clients.consumer.ConsumerRecord; 10 | import org.apache.kafka.clients.consumer.ConsumerRecords; 11 | import org.apache.kafka.clients.consumer.KafkaConsumer; 12 | import org.apache.kafka.clients.consumer.OffsetAndMetadata; 13 | import org.apache.kafka.common.serialization.StringDeserializer; 14 | 15 | public class DemoConsumerCommitPartition { 16 | 17 | public static void main(String[] args) throws Exception { 18 | args = new String[] { "kafka0:9092", "topic1", "group2", "consumer2" }; 19 | if (args == null || args.length != 4) { 20 | System.err.println( 21 | "Usage:\n\tjava -jar kafka_consumer.jar ${bootstrap_server} ${topic_name} ${group_name} ${client_id}"); 22 | System.exit(1); 23 | } 24 | String bootstrap = args[0]; 25 | String topic = args[1]; 26 | String groupid = args[2]; 27 | String clientid = args[3]; 28 | 29 | Properties props = new Properties(); 30 | props.put("bootstrap.servers", bootstrap); 31 | props.put("group.id", groupid); 32 | props.put("enable.auto.commit", "false"); 33 | props.put("key.deserializer", StringDeserializer.class.getName()); 34 | props.put("value.deserializer", StringDeserializer.class.getName()); 35 | props.put("max.poll.interval.ms", "300000"); 36 | props.put("max.poll.records", "500"); 37 | props.put("auto.offset.reset", "earliest"); 38 | KafkaConsumer consumer = new KafkaConsumer<>(props); 39 | consumer.subscribe(Arrays.asList(topic)); 40 | while (true) { 41 | ConsumerRecords records = consumer.poll(100); 42 | records.partitions().forEach(topicPartition -> { 43 | List> partitionRecords = records.records(topicPartition); 44 | partitionRecords.forEach(record -> { 45 | System.out.printf("client : %s , topic: %s , partition: %d , offset = %d, key = %s, value = %s%n", clientid, record.topic(), 46 | record.partition(), record.offset(), record.key(), record.value()); 47 | }); 48 | long lastOffset = partitionRecords.get(partitionRecords.size() - 1).offset(); 49 | consumer.commitSync(Collections.singletonMap(topicPartition, new OffsetAndMetadata(lastOffset + 1))); 50 | }); 51 | } 52 | } 53 | 54 | } 55 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/consumer/DemoConsumerFlowControl.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.consumer; 2 | 3 | import java.util.Arrays; 4 | import java.util.Collection; 5 | import java.util.Properties; 6 | 7 | import org.apache.kafka.clients.consumer.ConsumerRebalanceListener; 8 | import org.apache.kafka.clients.consumer.ConsumerRecords; 9 | import org.apache.kafka.clients.consumer.KafkaConsumer; 10 | import org.apache.kafka.common.TopicPartition; 11 | import org.apache.kafka.common.serialization.StringDeserializer; 12 | 13 | public class DemoConsumerFlowControl { 14 | 15 | public static void main(String[] args) { 16 | args = new String[] { "kafka0:9092", "topic1", "group239", "consumer2" }; 17 | if (args == null || args.length != 4) { 18 | System.err.println( 19 | "Usage:\n\tjava -jar kafka_consumer.jar ${bootstrap_server} ${topic_name} ${group_name} ${client_id}"); 20 | System.exit(1); 21 | } 22 | String bootstrap = args[0]; 23 | String topic = args[1]; 24 | String groupid = args[2]; 25 | String clientid = args[3]; 26 | 27 | Properties props = new Properties(); 28 | props.put("bootstrap.servers", bootstrap); 29 | props.put("group.id", groupid); 30 | props.put("client.id", clientid); 31 | props.put("enable.auto.commit", "true"); 32 | props.put("auto.commit.interval.ms", "1000"); 33 | props.put("key.deserializer", StringDeserializer.class.getName()); 34 | props.put("value.deserializer", StringDeserializer.class.getName()); 35 | props.put("auto.offset.reset", "earliest"); 36 | KafkaConsumer consumer = new KafkaConsumer<>(props); 37 | consumer.subscribe(Arrays.asList(topic), new ConsumerRebalanceListener(){ 38 | 39 | @Override 40 | public void onPartitionsRevoked(Collection partitions) { 41 | partitions.forEach(topicPartition -> { 42 | System.out.printf("Revoked partition for client %s : %s-%s %n", clientid, topicPartition.topic(), topicPartition.partition()); 43 | }); 44 | } 45 | 46 | @Override 47 | public void onPartitionsAssigned(Collection partitions) { 48 | partitions.forEach(topicPartition -> { 49 | System.out.printf("Assigned partition for client %s : %s-%s %n", clientid, topicPartition.topic(), topicPartition.partition()); 50 | }); 51 | }}); 52 | while (true) { 53 | ConsumerRecords records = consumer.poll(100000000); 54 | consumer.pause(Arrays.asList(new TopicPartition(topic, 0))); 55 | consumer.pause(Arrays.asList(new TopicPartition(topic, 1))); 56 | records.forEach(record -> { 57 | System.out.printf("client : %s , topic: %s , partition: %d , offset = %d, key = %s, value = %s%n", clientid, record.topic(), 58 | record.partition(), record.offset(), record.key(), record.value()); 59 | }); 60 | } 61 | } 62 | 63 | } 64 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/consumer/DemoConsumerInterceptor.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.consumer; 2 | 3 | import org.apache.kafka.clients.consumer.ConsumerInterceptor; 4 | import org.apache.kafka.clients.consumer.ConsumerRecords; 5 | 6 | import java.util.Map; 7 | 8 | /** 9 | * Created by juguo on 1/2/17. 10 | */ 11 | public class DemoConsumerInterceptor implements ConsumerInterceptor { 12 | @Override 13 | public ConsumerRecords onConsume(ConsumerRecords records) { 14 | return null; 15 | } 16 | 17 | @Override 18 | public void close() { 19 | 20 | } 21 | 22 | @Override 23 | public void onCommit(Map offsets) { 24 | 25 | } 26 | 27 | @Override 28 | public void configure(Map configs) { 29 | 30 | } 31 | } 32 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/consumer/DemoConsumerManualCommit.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.consumer; 2 | 3 | import java.util.Arrays; 4 | import java.util.Properties; 5 | import java.util.concurrent.atomic.AtomicLong; 6 | 7 | import org.apache.kafka.clients.consumer.ConsumerRecords; 8 | import org.apache.kafka.clients.consumer.KafkaConsumer; 9 | import org.apache.kafka.common.serialization.DoubleDeserializer; 10 | import org.apache.kafka.common.serialization.StringDeserializer; 11 | 12 | public class DemoConsumerManualCommit { 13 | 14 | public static void main(String[] args) throws Exception { 15 | args = new String[] { "kafka0:19092", "gender-amount", "group4", "consumer2" }; 16 | if (args == null || args.length != 4) { 17 | System.err.println( 18 | "Usage:\n\tjava -jar kafka_consumer.jar ${bootstrap_server} ${topic_name} ${group_name} ${client_id}"); 19 | System.exit(1); 20 | } 21 | String bootstrap = args[0]; 22 | String topic = args[1]; 23 | String groupid = args[2]; 24 | String clientid = args[3]; 25 | 26 | Properties props = new Properties(); 27 | props.put("bootstrap.servers", bootstrap); 28 | props.put("group.id", groupid); 29 | props.put("enable.auto.commit", "false"); 30 | props.put("key.deserializer", StringDeserializer.class.getName()); 31 | props.put("value.deserializer", DoubleDeserializer.class.getName()); 32 | props.put("max.poll.interval.ms", "300000"); 33 | props.put("max.poll.records", "500"); 34 | props.put("auto.offset.reset", "earliest"); 35 | KafkaConsumer consumer = new KafkaConsumer<>(props); 36 | consumer.subscribe(Arrays.asList(topic)); 37 | AtomicLong atomicLong = new AtomicLong(); 38 | while (true) { 39 | ConsumerRecords records = consumer.poll(100); 40 | records.forEach(record -> { 41 | System.out.printf("client : %s , topic: %s , partition: %d , offset = %d, key = %s, value = %s%n", 42 | clientid, record.topic(), record.partition(), record.offset(), record.key(), record.value()); 43 | if (atomicLong.get() % 10 == 0) { 44 | // consumer.commitSync(); 45 | } 46 | }); 47 | } 48 | } 49 | 50 | } 51 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/consumer/DemoConsumerRebalance.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.consumer; 2 | 3 | import java.util.Arrays; 4 | import java.util.Collection; 5 | import java.util.Properties; 6 | 7 | import org.apache.kafka.clients.consumer.ConsumerRebalanceListener; 8 | import org.apache.kafka.clients.consumer.ConsumerRecords; 9 | import org.apache.kafka.clients.consumer.KafkaConsumer; 10 | import org.apache.kafka.common.TopicPartition; 11 | import org.apache.kafka.common.serialization.StringDeserializer; 12 | 13 | public class DemoConsumerRebalance { 14 | 15 | public static void main(String[] args) { 16 | args = new String[] { "kafka0:9092", "topic1", "group1", "consumer1" }; 17 | if (args == null || args.length != 4) { 18 | System.err.println( 19 | "Usage:\n\tjava -jar kafka_consumer.jar ${bootstrap_server} ${topic_name} ${group_name} ${client_id}"); 20 | System.exit(1); 21 | } 22 | String bootstrap = args[0]; 23 | String topic = args[1]; 24 | String groupid = args[2]; 25 | String clientid = args[3]; 26 | 27 | Properties props = new Properties(); 28 | props.put("bootstrap.servers", bootstrap); 29 | props.put("group.id", groupid); 30 | props.put("client.id", clientid); 31 | props.put("enable.auto.commit", "true"); 32 | props.put("auto.commit.interval.ms", "1000"); 33 | props.put("key.deserializer", StringDeserializer.class.getName()); 34 | props.put("value.deserializer", StringDeserializer.class.getName()); 35 | KafkaConsumer consumer = new KafkaConsumer<>(props); 36 | consumer.subscribe(Arrays.asList(topic), new ConsumerRebalanceListener(){ 37 | 38 | @Override 39 | public void onPartitionsRevoked(Collection partitions) { 40 | partitions.forEach(topicPartition -> { 41 | System.out.printf("Revoked partition for client %s : %s-%s %n", clientid, topicPartition.topic(), topicPartition.partition()); 42 | }); 43 | } 44 | 45 | @Override 46 | public void onPartitionsAssigned(Collection partitions) { 47 | partitions.forEach(topicPartition -> { 48 | System.out.printf("Assigned partition for client %s : %s-%s %n", clientid, topicPartition.topic(), topicPartition.partition()); 49 | }); 50 | }}); 51 | while (true) { 52 | ConsumerRecords records = consumer.poll(100); 53 | records.forEach(record -> { 54 | System.out.printf("client : %s , topic: %s , partition: %d , offset = %d, key = %s, value = %s%n", clientid, record.topic(), 55 | record.partition(), record.offset(), record.key(), record.value()); 56 | }); 57 | } 58 | } 59 | 60 | } 61 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/producer/EvenProducerInterceptor.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.producer; 2 | 3 | import org.apache.kafka.clients.producer.ProducerInterceptor; 4 | import org.apache.kafka.clients.producer.ProducerRecord; 5 | import org.apache.kafka.clients.producer.RecordMetadata; 6 | 7 | import java.util.Map; 8 | 9 | /** 10 | * Created by Jason Guo (jason.guo.vip@gmail.com). 11 | */ 12 | public class EvenProducerInterceptor implements ProducerInterceptor { 13 | @Override 14 | public ProducerRecord onSend(ProducerRecord record) { 15 | return record; 16 | } 17 | 18 | @Override 19 | public void onAcknowledgement(RecordMetadata metadata, Exception exception) { 20 | 21 | } 22 | 23 | @Override 24 | public void close() { 25 | 26 | } 27 | 28 | @Override 29 | public void configure(Map configs) { 30 | 31 | } 32 | } 33 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/producer/HashPartitioner.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.producer; 2 | 3 | import java.util.List; 4 | import java.util.Map; 5 | 6 | import org.apache.kafka.clients.producer.Partitioner; 7 | import org.apache.kafka.common.Cluster; 8 | import org.apache.kafka.common.PartitionInfo; 9 | 10 | public class HashPartitioner implements Partitioner { 11 | 12 | @Override 13 | public void configure(Map configs) { 14 | } 15 | 16 | @Override 17 | public int partition(String topic, Object key, byte[] keyBytes, Object value, byte[] valueBytes, Cluster cluster) { 18 | List partitions = cluster.partitionsForTopic(topic); 19 | int numPartitions = partitions.size(); 20 | if (keyBytes != null) { 21 | int hashCode = 0; 22 | if (key instanceof Integer || key instanceof Long) { 23 | hashCode = (int) key; 24 | } else { 25 | hashCode = key.hashCode(); 26 | } 27 | hashCode = hashCode & 0x7fffffff; 28 | return hashCode % numPartitions; 29 | } else { 30 | return 0; 31 | } 32 | } 33 | 34 | @Override 35 | public void close() { 36 | } 37 | 38 | } 39 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/producer/ProducerDemo.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.producer; 2 | 3 | import java.util.Properties; 4 | 5 | import org.apache.kafka.clients.producer.KafkaProducer; 6 | import org.apache.kafka.clients.producer.Producer; 7 | import org.apache.kafka.clients.producer.ProducerRecord; 8 | import org.apache.kafka.common.serialization.StringSerializer; 9 | 10 | public class ProducerDemo { 11 | 12 | public static void main(String[] args) throws Exception { 13 | Properties props = new Properties(); 14 | props.put("bootstrap.servers", "kafka0:9092"); 15 | props.put("acks", "all"); 16 | props.put("retries", 3); 17 | props.put("batch.size", 16384); 18 | props.put("linger.ms", 1); 19 | props.put("buffer.memory", 33554432); 20 | props.put("key.serializer", StringSerializer.class.getName()); 21 | props.put("value.serializer", StringSerializer.class.getName()); 22 | props.put("partitioner.class", HashPartitioner.class.getName()); 23 | props.put("interceptor.classes", EvenProducerInterceptor.class.getName()); 24 | 25 | Producer producer = new KafkaProducer(props); 26 | for (int i = 0; i < 10; i++) 27 | producer.send(new ProducerRecord("topic1", Integer.toString(i), Integer.toString(i))); 28 | producer.close(); 29 | } 30 | 31 | } 32 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/producer/ProducerDemoCallback.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.producer; 2 | 3 | import java.util.Properties; 4 | 5 | import org.apache.kafka.clients.producer.KafkaProducer; 6 | import org.apache.kafka.clients.producer.Producer; 7 | import org.apache.kafka.clients.producer.ProducerRecord; 8 | import org.apache.kafka.common.serialization.StringSerializer; 9 | 10 | public class ProducerDemoCallback { 11 | 12 | public static void main(String[] args) throws Exception { 13 | Properties props = new Properties(); 14 | props.put("bootstrap.servers", "kafka0:9092"); 15 | props.put("acks", "all"); 16 | props.put("retries", 3); 17 | props.put("batch.size", 16384); 18 | props.put("linger.ms", 1); 19 | props.put("buffer.memory", 33554432); 20 | props.put("key.serializer", StringSerializer.class.getName()); 21 | props.put("value.serializer", StringSerializer.class.getName()); 22 | props.put("partitioner.class", HashPartitioner.class.getName()); 23 | 24 | Producer producer = new KafkaProducer(props); 25 | for (int i = 0; i < 10; i++) { 26 | ProducerRecord record = new ProducerRecord("topic1", Integer.toString(i), 27 | Integer.toString(i)); 28 | // producer.send(record); 29 | // producer.send(record, new Callback() { 30 | // 31 | // @Override 32 | // public void onCompletion(RecordMetadata metadata, Exception exception) { 33 | // System.out.printf("Send record partition:%d, offset:%d, keysize:%d, valuesize:%d %n", 34 | // metadata.partition(), metadata.offset(), metadata.serializedKeySize(), 35 | // metadata.serializedValueSize()); 36 | // } 37 | // 38 | // }); 39 | producer.send(record, (metadata, exception) -> { 40 | if(metadata != null) { 41 | System.out.printf("Send record partition:%d, offset:%d, keysize:%d, valuesize:%d %n", 42 | metadata.partition(), metadata.offset(), metadata.serializedKeySize(), 43 | metadata.serializedValueSize()); 44 | } 45 | if(exception != null) { 46 | exception.printStackTrace(); 47 | } 48 | }); 49 | } 50 | producer.close(); 51 | } 52 | 53 | } 54 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/stream/PurchaseAnalysis.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.stream; 2 | 3 | import java.io.IOException; 4 | import java.util.Properties; 5 | 6 | import org.apache.commons.lang3.StringUtils; 7 | import org.apache.kafka.clients.consumer.ConsumerConfig; 8 | import org.apache.kafka.common.serialization.Serdes; 9 | import org.apache.kafka.streams.KafkaStreams; 10 | import org.apache.kafka.streams.KeyValue; 11 | import org.apache.kafka.streams.StreamsConfig; 12 | import org.apache.kafka.streams.kstream.KStream; 13 | import org.apache.kafka.streams.kstream.KStreamBuilder; 14 | import org.apache.kafka.streams.kstream.KTable; 15 | 16 | import com.jasongj.kafka.stream.model.Item; 17 | import com.jasongj.kafka.stream.model.Order; 18 | import com.jasongj.kafka.stream.model.User; 19 | import com.jasongj.kafka.stream.serdes.SerdesFactory; 20 | import com.jasongj.kafka.stream.timeextractor.OrderTimestampExtractor; 21 | 22 | public class PurchaseAnalysis { 23 | 24 | public static void main(String[] args) throws IOException, InterruptedException { 25 | Properties props = new Properties(); 26 | props.put(StreamsConfig.APPLICATION_ID_CONFIG, "streams-purchase-analysis2"); 27 | props.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, "kafka0:19092"); 28 | props.put(StreamsConfig.ZOOKEEPER_CONNECT_CONFIG, "zookeeper0:12181/kafka"); 29 | props.put(StreamsConfig.KEY_SERDE_CLASS_CONFIG, Serdes.String().getClass()); 30 | props.put(StreamsConfig.VALUE_SERDE_CLASS_CONFIG, Serdes.String().getClass()); 31 | props.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest"); 32 | props.put(StreamsConfig.TIMESTAMP_EXTRACTOR_CLASS_CONFIG, OrderTimestampExtractor.class); 33 | 34 | KStreamBuilder streamBuilder = new KStreamBuilder(); 35 | KStream orderStream = streamBuilder.stream(Serdes.String(), SerdesFactory.serdFrom(Order.class), "orders"); 36 | KTable userTable = streamBuilder.table(Serdes.String(), SerdesFactory.serdFrom(User.class), "users", "users-state-store"); 37 | KTable itemTable = streamBuilder.table(Serdes.String(), SerdesFactory.serdFrom(Item.class), "items", "items-state-store"); 38 | // itemTable.toStream().foreach((String itemName, Item item) -> System.out.printf("Item info %s-%s-%s-%s\n", item.getItemName(), item.getAddress(), item.getType(), item.getPrice())); 39 | KTable kTable = orderStream 40 | .leftJoin(userTable, (Order order, User user) -> OrderUser.fromOrderUser(order, user), Serdes.String(), SerdesFactory.serdFrom(Order.class)) 41 | .filter((String userName, OrderUser orderUser) -> orderUser.userAddress != null) 42 | .map((String userName, OrderUser orderUser) -> new KeyValue(orderUser.itemName, orderUser)) 43 | .through(Serdes.String(), SerdesFactory.serdFrom(OrderUser.class), (String key, OrderUser orderUser, int numPartitions) -> (orderUser.getItemName().hashCode() & 0x7FFFFFFF) % numPartitions, "orderuser-repartition-by-item") 44 | .leftJoin(itemTable, (OrderUser orderUser, Item item) -> OrderUserItem.fromOrderUser(orderUser, item), Serdes.String(), SerdesFactory.serdFrom(OrderUser.class)) 45 | .filter((String item, OrderUserItem orderUserItem) -> StringUtils.compare(orderUserItem.userAddress, orderUserItem.itemAddress) == 0) 46 | // .foreach((String itemName, OrderUserItem orderUserItem) -> System.out.printf("%s-%s-%s-%s\n", itemName, orderUserItem.itemAddress, orderUserItem.userName, orderUserItem.userAddress)) 47 | .map((String item, OrderUserItem orderUserItem) -> KeyValue.pair(orderUserItem.gender, (Double)(orderUserItem.quantity * orderUserItem.itemPrice))) 48 | .groupByKey(Serdes.String(), Serdes.Double()) 49 | .reduce((Double v1, Double v2) -> v1 + v2, "gender-amount-state-store"); 50 | // kTable.foreach((str, dou) -> System.out.printf("%s-%s\n", str, dou)); 51 | kTable 52 | .toStream() 53 | .map((String gender, Double total) -> new KeyValue(gender, String.valueOf(total))) 54 | .to("gender-amount"); 55 | 56 | KafkaStreams kafkaStreams = new KafkaStreams(streamBuilder, props); 57 | kafkaStreams.cleanUp(); 58 | kafkaStreams.start(); 59 | 60 | System.in.read(); 61 | kafkaStreams.close(); 62 | kafkaStreams.cleanUp(); 63 | } 64 | 65 | public static class OrderUser { 66 | private String userName; 67 | private String itemName; 68 | private long transactionDate; 69 | private int quantity; 70 | private String userAddress; 71 | private String gender; 72 | private int age; 73 | 74 | public String getUserName() { 75 | return userName; 76 | } 77 | 78 | public void setUserName(String userName) { 79 | this.userName = userName; 80 | } 81 | 82 | public String getItemName() { 83 | return itemName; 84 | } 85 | 86 | public void setItemName(String itemName) { 87 | this.itemName = itemName; 88 | } 89 | 90 | public long getTransactionDate() { 91 | return transactionDate; 92 | } 93 | 94 | public void setTransactionDate(long transactionDate) { 95 | this.transactionDate = transactionDate; 96 | } 97 | 98 | public int getQuantity() { 99 | return quantity; 100 | } 101 | 102 | public void setQuantity(int quantity) { 103 | this.quantity = quantity; 104 | } 105 | 106 | public String getUserAddress() { 107 | return userAddress; 108 | } 109 | 110 | public void setUserAddress(String userAddress) { 111 | this.userAddress = userAddress; 112 | } 113 | 114 | public String getGender() { 115 | return gender; 116 | } 117 | 118 | public void setGender(String gender) { 119 | this.gender = gender; 120 | } 121 | 122 | public int getAge() { 123 | return age; 124 | } 125 | 126 | public void setAge(int age) { 127 | this.age = age; 128 | } 129 | 130 | public static OrderUser fromOrder(Order order) { 131 | OrderUser orderUser = new OrderUser(); 132 | if(order == null) { 133 | return orderUser; 134 | } 135 | orderUser.userName = order.getUserName(); 136 | orderUser.itemName = order.getItemName(); 137 | orderUser.transactionDate = order.getTransactionDate(); 138 | orderUser.quantity = order.getQuantity(); 139 | return orderUser; 140 | } 141 | 142 | public static OrderUser fromOrderUser(Order order, User user) { 143 | OrderUser orderUser = fromOrder(order); 144 | if(user == null) { 145 | return orderUser; 146 | } 147 | orderUser.gender = user.getGender(); 148 | orderUser.age = user.getAge(); 149 | orderUser.userAddress = user.getAddress(); 150 | return orderUser; 151 | } 152 | } 153 | 154 | public static class OrderUserItem { 155 | private String userName; 156 | private String itemName; 157 | private long transactionDate; 158 | private int quantity; 159 | private String userAddress; 160 | private String gender; 161 | private int age; 162 | private String itemAddress; 163 | private String itemType; 164 | private double itemPrice; 165 | 166 | public String getUserName() { 167 | return userName; 168 | } 169 | 170 | public void setUserName(String userName) { 171 | this.userName = userName; 172 | } 173 | 174 | public String getItemName() { 175 | return itemName; 176 | } 177 | 178 | public void setItemName(String itemName) { 179 | this.itemName = itemName; 180 | } 181 | 182 | public long getTransactionDate() { 183 | return transactionDate; 184 | } 185 | 186 | public void setTransactionDate(long transactionDate) { 187 | this.transactionDate = transactionDate; 188 | } 189 | 190 | public int getQuantity() { 191 | return quantity; 192 | } 193 | 194 | public void setQuantity(int quantity) { 195 | this.quantity = quantity; 196 | } 197 | 198 | public String getUserAddress() { 199 | return userAddress; 200 | } 201 | 202 | public void setUserAddress(String userAddress) { 203 | this.userAddress = userAddress; 204 | } 205 | 206 | public String getGender() { 207 | return gender; 208 | } 209 | 210 | public void setGender(String gender) { 211 | this.gender = gender; 212 | } 213 | 214 | public int getAge() { 215 | return age; 216 | } 217 | 218 | public void setAge(int age) { 219 | this.age = age; 220 | } 221 | 222 | public String getItemAddress() { 223 | return itemAddress; 224 | } 225 | 226 | public void setItemAddress(String itemAddress) { 227 | this.itemAddress = itemAddress; 228 | } 229 | 230 | public String getItemType() { 231 | return itemType; 232 | } 233 | 234 | public void setItemType(String itemType) { 235 | this.itemType = itemType; 236 | } 237 | 238 | public double getItemPrice() { 239 | return itemPrice; 240 | } 241 | 242 | public void setItemPrice(double itemPrice) { 243 | this.itemPrice = itemPrice; 244 | } 245 | 246 | public static OrderUserItem fromOrderUser(OrderUser orderUser) { 247 | OrderUserItem orderUserItem = new OrderUserItem(); 248 | if(orderUser == null) { 249 | return orderUserItem; 250 | } 251 | orderUserItem.userName = orderUser.userName; 252 | orderUserItem.itemName = orderUser.itemName; 253 | orderUserItem.transactionDate = orderUser.transactionDate; 254 | orderUserItem.quantity = orderUser.quantity; 255 | orderUserItem.userAddress = orderUser.userAddress; 256 | orderUserItem.gender = orderUser.gender; 257 | orderUserItem.age = orderUser.age; 258 | return orderUserItem; 259 | } 260 | 261 | public static OrderUserItem fromOrderUser(OrderUser orderUser, Item item) { 262 | OrderUserItem orderUserItem = fromOrderUser(orderUser); 263 | if(item == null) { 264 | return orderUserItem; 265 | } 266 | orderUserItem.itemAddress = item.getAddress(); 267 | orderUserItem.itemType = item.getType(); 268 | orderUserItem.itemPrice = item.getPrice(); 269 | return orderUserItem; 270 | } 271 | } 272 | 273 | } 274 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/stream/WordCountDSL.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.stream; 2 | 3 | import java.util.Arrays; 4 | import java.util.Properties; 5 | 6 | import org.apache.kafka.clients.consumer.ConsumerConfig; 7 | import org.apache.kafka.common.serialization.Serdes; 8 | import org.apache.kafka.streams.KafkaStreams; 9 | import org.apache.kafka.streams.KeyValue; 10 | import org.apache.kafka.streams.StreamsConfig; 11 | import org.apache.kafka.streams.kstream.KStream; 12 | import org.apache.kafka.streams.kstream.KStreamBuilder; 13 | import org.apache.kafka.streams.kstream.TimeWindows; 14 | import org.apache.kafka.streams.kstream.Windowed; 15 | 16 | public class WordCountDSL { 17 | 18 | public static void main(String[] args) throws InterruptedException { 19 | Properties props = new Properties(); 20 | props.put(StreamsConfig.APPLICATION_ID_CONFIG, "streams-wordcount-dsl"); 21 | props.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, "kafka0:19092"); 22 | props.put(StreamsConfig.ZOOKEEPER_CONNECT_CONFIG, "zookeeper0:12181/kafka"); 23 | props.put(StreamsConfig.KEY_SERDE_CLASS_CONFIG, Serdes.String().getClass()); 24 | props.put(StreamsConfig.VALUE_SERDE_CLASS_CONFIG, Serdes.String().getClass()); 25 | props.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest"); 26 | 27 | KStreamBuilder builder = new KStreamBuilder(); 28 | KStream stream = builder.stream("words"); 29 | // stream.flatMapValues(values -> Arrays.asList(values.toLowerCase().split(" "))) 30 | // .map((k, v) -> KeyValue.pair(v, v)).groupByKey().aggregate( 31 | // () -> 0L, 32 | // (aggKey, value, aggregate) -> aggregate + 1L, 33 | // TimeWindows.of(5000).advanceBy(1000), 34 | // Serdes.Long(), 35 | // "Counts1") 36 | // .foreach((Windowed window, Long value) -> { 37 | // System.out.printf("key=%s, value=%s, start=%d, end=%d\n",window.key(), value, window.window().start(), window.window().end()); 38 | // }); 39 | 40 | KStream kStream = stream.flatMapValues(values -> Arrays.asList(values.toLowerCase().split(" "))) 41 | .map((k, v) -> KeyValue.pair(v, v)).groupByKey().aggregate( 42 | () -> 0L, 43 | (aggKey, value, aggregate) -> aggregate + 1L, 44 | TimeWindows.of(5000).advanceBy(5000), 45 | Serdes.Long(), 46 | "Counts") 47 | .toStream() 48 | .map((Windowed window, Long value) -> { 49 | return new KeyValue(window.key(), String.format("key=%s, value=%s, start=%d, end=%d\n",window.key(), value, window.window().start(), window.window().end())); 50 | }); 51 | kStream.to(Serdes.String(), Serdes.String(), "count"); 52 | 53 | // KTable kTable = stream.flatMapValues(values -> Arrays.asList(values.toLowerCase().split(" "))) 54 | // .map((k, v) -> KeyValue.pair(v, v)).groupByKey().count("Counts"); 55 | // kTable.to(Serdes.String(), Serdes.Long(), "stream-dsl-sink"); 56 | 57 | KafkaStreams streams = new KafkaStreams(builder, props); 58 | streams.start(); 59 | Thread.sleep(100000L); 60 | streams.close(); 61 | } 62 | 63 | } 64 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/stream/WordCountProcessor.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.stream; 2 | 3 | import java.util.Optional; 4 | import java.util.stream.Stream; 5 | 6 | import org.apache.kafka.streams.processor.Processor; 7 | import org.apache.kafka.streams.processor.ProcessorContext; 8 | import org.apache.kafka.streams.state.KeyValueIterator; 9 | import org.apache.kafka.streams.state.KeyValueStore; 10 | 11 | public class WordCountProcessor implements Processor { 12 | 13 | private ProcessorContext context; 14 | private KeyValueStore kvStore; 15 | 16 | @SuppressWarnings("unchecked") 17 | @Override 18 | public void init(ProcessorContext context) { 19 | this.context = context; 20 | this.context.schedule(1000); 21 | this.kvStore = (KeyValueStore) context.getStateStore("Counts"); 22 | } 23 | 24 | @Override 25 | public void process(String key, String value) { 26 | Stream.of(value.toLowerCase().split(" ")).forEach((String word) -> { 27 | Optional counts = Optional.ofNullable(kvStore.get(word)); 28 | int count = counts.map(wordcount -> wordcount + 1).orElse(1); 29 | kvStore.put(word, count); 30 | }); 31 | } 32 | 33 | @Override 34 | public void punctuate(long timestamp) { 35 | try (KeyValueIterator iterator = this.kvStore.all()) { 36 | iterator.forEachRemaining(entry -> { 37 | context.forward(entry.key, entry.value); 38 | this.kvStore.delete(entry.key); 39 | }); 40 | } 41 | context.commit(); 42 | } 43 | 44 | @Override 45 | public void close() { 46 | this.kvStore.close(); 47 | } 48 | 49 | } 50 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/stream/WordCountTopology.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.stream; 2 | 3 | import java.io.IOException; 4 | import java.util.Properties; 5 | 6 | import org.apache.kafka.clients.consumer.ConsumerConfig; 7 | import org.apache.kafka.common.serialization.IntegerSerializer; 8 | import org.apache.kafka.common.serialization.Serdes; 9 | import org.apache.kafka.common.serialization.StringDeserializer; 10 | import org.apache.kafka.common.serialization.StringSerializer; 11 | import org.apache.kafka.streams.KafkaStreams; 12 | import org.apache.kafka.streams.StreamsConfig; 13 | import org.apache.kafka.streams.processor.TopologyBuilder; 14 | import org.apache.kafka.streams.state.Stores; 15 | 16 | public class WordCountTopology { 17 | 18 | public static void main(String[] args) throws IOException { 19 | Properties props = new Properties(); 20 | props.put(StreamsConfig.APPLICATION_ID_CONFIG, "streams-wordcount-processor"); 21 | props.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, "kafka0:19092"); 22 | props.put(StreamsConfig.ZOOKEEPER_CONNECT_CONFIG, "zookeeper0:12181/kafka"); 23 | props.put(StreamsConfig.KEY_SERDE_CLASS_CONFIG, Serdes.String().getClass()); 24 | props.put(StreamsConfig.VALUE_SERDE_CLASS_CONFIG, Serdes.Integer().getClass()); 25 | props.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest"); 26 | 27 | TopologyBuilder builder = new TopologyBuilder(); 28 | builder.addSource("SOURCE", new StringDeserializer(), new StringDeserializer(), "words") 29 | .addProcessor("WordCountProcessor", WordCountProcessor::new, "SOURCE") 30 | .addStateStore(Stores.create("Counts").withStringKeys().withIntegerValues().inMemory().build(), "WordCountProcessor") 31 | // .connectProcessorAndStateStores("WordCountProcessor", "Counts") 32 | .addSink("SINK", "count", new StringSerializer(), new IntegerSerializer(), "WordCountProcessor"); 33 | 34 | KafkaStreams stream = new KafkaStreams(builder, props); 35 | stream.start(); 36 | System.in.read(); 37 | stream.close(); 38 | stream.cleanUp(); 39 | } 40 | 41 | } 42 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/stream/model/Item.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.stream.model; 2 | 3 | public class Item { 4 | private String itemName; 5 | private String address; 6 | private String type; 7 | private double price; 8 | 9 | public Item() {} 10 | 11 | public Item(String itemName, String address, String type, double price) { 12 | this.itemName = itemName; 13 | this.address = address; 14 | this.type = type; 15 | this.price = price; 16 | } 17 | 18 | public String getItemName() { 19 | return itemName; 20 | } 21 | 22 | public void setItemName(String itemName) { 23 | this.itemName = itemName; 24 | } 25 | 26 | public String getAddress() { 27 | return address; 28 | } 29 | 30 | public void setAddress(String address) { 31 | this.address = address; 32 | } 33 | 34 | public String getType() { 35 | return type; 36 | } 37 | 38 | public void setType(String type) { 39 | this.type = type; 40 | } 41 | 42 | public double getPrice() { 43 | return price; 44 | } 45 | 46 | public void setPrice(double price) { 47 | this.price = price; 48 | } 49 | 50 | } 51 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/stream/model/Order.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.stream.model; 2 | 3 | public class Order { 4 | 5 | private String userName; 6 | private String itemName; 7 | private long transactionDate; 8 | private int quantity; 9 | 10 | public Order() {} 11 | 12 | public Order(String userName, String itemName, long transactionDate, int quantity) { 13 | this.userName = userName; 14 | this.itemName = itemName; 15 | this.transactionDate = transactionDate; 16 | this.quantity = quantity; 17 | } 18 | 19 | public String getUserName() { 20 | return userName; 21 | } 22 | 23 | public void setUserName(String userName) { 24 | this.userName = userName; 25 | } 26 | 27 | public String getItemName() { 28 | return itemName; 29 | } 30 | 31 | public void setItemName(String itemName) { 32 | this.itemName = itemName; 33 | } 34 | 35 | public long getTransactionDate() { 36 | return transactionDate; 37 | } 38 | 39 | public void setTransactionDate(long transactionDate) { 40 | this.transactionDate = transactionDate; 41 | } 42 | 43 | public int getQuantity() { 44 | return quantity; 45 | } 46 | 47 | public void setQuantity(int quantity) { 48 | this.quantity = quantity; 49 | } 50 | } 51 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/stream/model/User.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.stream.model; 2 | 3 | public class User { 4 | private String name; 5 | private String address; 6 | private String gender; 7 | private int age; 8 | 9 | public User() {} 10 | 11 | public User(String name, String address, String gender, int age) { 12 | this.name = name; 13 | this.address = address; 14 | this.gender = gender; 15 | this.age = age; 16 | } 17 | 18 | public String getName() { 19 | return name; 20 | } 21 | 22 | public void setName(String name) { 23 | this.name = name; 24 | } 25 | 26 | public String getAddress() { 27 | return address; 28 | } 29 | 30 | public void setAddress(String address) { 31 | this.address = address; 32 | } 33 | 34 | public String getGender() { 35 | return gender; 36 | } 37 | 38 | public void setGender(String gender) { 39 | this.gender = gender; 40 | } 41 | 42 | public int getAge() { 43 | return age; 44 | } 45 | 46 | public void setAge(int age) { 47 | this.age = age; 48 | } 49 | 50 | } 51 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/stream/producer/ItemProducer.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.stream.producer; 2 | 3 | import java.io.IOException; 4 | import java.nio.charset.Charset; 5 | import java.util.List; 6 | import java.util.Properties; 7 | import java.util.stream.Collectors; 8 | 9 | import org.apache.commons.io.IOUtils; 10 | import org.apache.commons.lang3.StringUtils; 11 | import org.apache.kafka.clients.producer.KafkaProducer; 12 | import org.apache.kafka.clients.producer.Producer; 13 | import org.apache.kafka.clients.producer.ProducerRecord; 14 | import org.apache.kafka.common.serialization.StringSerializer; 15 | 16 | import com.jasongj.kafka.producer.HashPartitioner; 17 | import com.jasongj.kafka.stream.model.Item; 18 | import com.jasongj.kafka.stream.serdes.GenericSerializer; 19 | 20 | public class ItemProducer { 21 | 22 | public static void main(String[] args) throws Exception { 23 | Properties props = new Properties(); 24 | props.put("bootstrap.servers", "kafka0:19092"); 25 | props.put("acks", "all"); 26 | props.put("retries", 3); 27 | props.put("batch.size", 16384); 28 | props.put("linger.ms", 1); 29 | props.put("buffer.memory", 33554432); 30 | props.put("key.serializer", StringSerializer.class.getName()); 31 | props.put("value.serializer", GenericSerializer.class.getName()); 32 | props.put("value.serializer.type", Item.class.getName()); 33 | props.put("partitioner.class", HashPartitioner.class.getName()); 34 | 35 | Producer producer = new KafkaProducer(props); 36 | List items = readItem(); 37 | items.forEach((Item item) -> producer.send(new ProducerRecord("items", item.getItemName(), item))); 38 | producer.close(); 39 | } 40 | 41 | public static List readItem() throws IOException { 42 | List lines = IOUtils.readLines(OrderProducer.class.getResourceAsStream("/items.csv"), Charset.forName("UTF-8")); 43 | List items = lines.stream() 44 | .filter(StringUtils::isNoneBlank) 45 | .map((String line) -> line.split("\\s*,\\s*")) 46 | .filter((String[] values) -> values.length == 4) 47 | .map((String[] values) -> new Item(values[0], values[1], values[2], Double.parseDouble(values[3]))) 48 | .collect(Collectors.toList()); 49 | return items; 50 | } 51 | 52 | } 53 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/stream/producer/OrderProducer.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.stream.producer; 2 | 3 | import java.io.IOException; 4 | import java.io.InputStream; 5 | import java.nio.charset.Charset; 6 | import java.time.LocalDateTime; 7 | import java.time.ZoneOffset; 8 | import java.time.format.DateTimeFormatter; 9 | import java.util.List; 10 | import java.util.Properties; 11 | import java.util.stream.Collectors; 12 | 13 | import org.apache.commons.io.IOUtils; 14 | import org.apache.commons.lang3.StringUtils; 15 | import org.apache.kafka.clients.producer.KafkaProducer; 16 | import org.apache.kafka.clients.producer.Producer; 17 | import org.apache.kafka.clients.producer.ProducerRecord; 18 | import org.apache.kafka.common.serialization.StringSerializer; 19 | 20 | import com.jasongj.kafka.producer.HashPartitioner; 21 | import com.jasongj.kafka.stream.model.Order; 22 | import com.jasongj.kafka.stream.serdes.GenericSerializer; 23 | 24 | public class OrderProducer { 25 | 26 | private static DateTimeFormatter dataTimeFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"); 27 | 28 | public static void main(String[] args) throws Exception { 29 | Properties props = new Properties(); 30 | props.put("bootstrap.servers", "kafka0:19092"); 31 | props.put("acks", "all"); 32 | props.put("retries", 3); 33 | props.put("batch.size", 16384); 34 | props.put("linger.ms", 1); 35 | props.put("buffer.memory", 33554432); 36 | props.put("key.serializer", StringSerializer.class.getName()); 37 | props.put("value.serializer", GenericSerializer.class.getName()); 38 | props.put("value.serializer.type", Order.class.getName()); 39 | props.put("partitioner.class", HashPartitioner.class.getName()); 40 | 41 | Producer producer = new KafkaProducer(props); 42 | List orders = readOrder(); 43 | orders.forEach((Order order) -> producer.send(new ProducerRecord("orders", order.getUserName(), order))); 44 | producer.close(); 45 | } 46 | 47 | public static List readOrder() throws IOException { 48 | InputStream inputStream = OrderProducer.class.getResourceAsStream("/orders.csv"); 49 | List lines = IOUtils.readLines(inputStream, Charset.forName("UTF-8")); 50 | List orders = lines.stream() 51 | .filter(StringUtils::isNoneBlank) 52 | .map((String line) -> line.split("\\s*,\\s*")) 53 | .filter((String[] values) -> values.length == 4) 54 | .map((String[] values) -> new Order(values[0], values[1], LocalDateTime.parse(values[2], dataTimeFormatter).toEpochSecond(ZoneOffset.UTC) * 1000, Integer.parseInt(values[3]))) 55 | .collect(Collectors.toList()); 56 | return orders; 57 | } 58 | 59 | } 60 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/stream/producer/UserProducer.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.stream.producer; 2 | 3 | import java.io.IOException; 4 | import java.nio.charset.Charset; 5 | import java.util.List; 6 | import java.util.Properties; 7 | import java.util.stream.Collectors; 8 | 9 | import org.apache.commons.io.IOUtils; 10 | import org.apache.commons.lang3.StringUtils; 11 | import org.apache.kafka.clients.producer.KafkaProducer; 12 | import org.apache.kafka.clients.producer.Producer; 13 | import org.apache.kafka.clients.producer.ProducerRecord; 14 | import org.apache.kafka.common.serialization.StringSerializer; 15 | 16 | import com.jasongj.kafka.producer.HashPartitioner; 17 | import com.jasongj.kafka.stream.model.User; 18 | import com.jasongj.kafka.stream.serdes.GenericSerializer; 19 | 20 | public class UserProducer { 21 | 22 | public static void main(String[] args) throws Exception { 23 | Properties props = new Properties(); 24 | props.put("bootstrap.servers", "kafka0:19092"); 25 | props.put("acks", "all"); 26 | props.put("retries", 3); 27 | props.put("batch.size", 16384); 28 | props.put("linger.ms", 1); 29 | props.put("buffer.memory", 33554432); 30 | props.put("key.serializer", StringSerializer.class.getName()); 31 | props.put("value.serializer", GenericSerializer.class.getName()); 32 | props.put("value.serializer.type", User.class.getName()); 33 | props.put("partitioner.class", HashPartitioner.class.getName()); 34 | 35 | Producer producer = new KafkaProducer(props); 36 | List users = readUser(); 37 | users.forEach((User user) -> producer.send(new ProducerRecord("users", user.getName(), user))); 38 | producer.close(); 39 | } 40 | 41 | public static List readUser() throws IOException { 42 | List lines = IOUtils.readLines(OrderProducer.class.getResourceAsStream("/users.csv"), Charset.forName("UTF-8")); 43 | List users = lines.stream() 44 | .filter(StringUtils::isNoneBlank) 45 | .map((String line) -> line.split("\\s*,\\s*")) 46 | .filter((String[] values) -> values.length == 4) 47 | .map((String[] values) -> new User(values[0], values[1], values[2], Integer.parseInt(values[3]))) 48 | .collect(Collectors.toList()); 49 | return users; 50 | } 51 | 52 | } 53 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/stream/serdes/GenericDeserializer.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.stream.serdes; 2 | 3 | import java.io.IOException; 4 | import java.util.Map; 5 | 6 | import org.apache.kafka.common.errors.SerializationException; 7 | import org.apache.kafka.common.serialization.Deserializer; 8 | 9 | import com.fasterxml.jackson.databind.ObjectMapper; 10 | 11 | /** 12 | * This deserializer can deserialize any object of POJO class 13 | * 14 | * @author Jason Guo 15 | * 16 | * @param 17 | * POJO class. The class should have a constructor without any 18 | * arguments and have setter and getter for every member variable 19 | * 20 | */ 21 | 22 | public class GenericDeserializer implements Deserializer { 23 | 24 | private Class type; 25 | private ObjectMapper objectMapper = new ObjectMapper(); 26 | 27 | public GenericDeserializer() {} 28 | 29 | public GenericDeserializer(Class type) { 30 | this.type = type; 31 | } 32 | 33 | @SuppressWarnings("unchecked") 34 | @Override 35 | public void configure(Map configs, boolean isKey) { 36 | if(type != null) { 37 | return; 38 | } 39 | 40 | String typeProp = isKey ? "key.deserializer.type" : "value.deserializer.type"; 41 | String typeName = (String)configs.get(typeProp); 42 | try { 43 | type = (Class)Class.forName(typeName); 44 | } catch (Exception ex) { 45 | throw new SerializationException("Failed to initialize GenericDeserializer for " + typeName, ex); 46 | } 47 | } 48 | 49 | @Override 50 | public T deserialize(String topic, byte[] data) { 51 | if (data == null) { 52 | return null; 53 | } 54 | try { 55 | return this.objectMapper.readValue(data, type); 56 | } catch (IOException ex) { 57 | throw new SerializationException(ex); 58 | } 59 | } 60 | 61 | @Override 62 | public void close() { 63 | } 64 | 65 | } -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/stream/serdes/GenericSerializer.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.stream.serdes; 2 | 3 | import java.io.IOException; 4 | import java.util.Map; 5 | 6 | import org.apache.kafka.common.errors.SerializationException; 7 | import org.apache.kafka.common.serialization.Serde; 8 | import org.apache.kafka.common.serialization.Serializer; 9 | 10 | import com.fasterxml.jackson.databind.ObjectMapper; 11 | import com.jasongj.kafka.stream.model.User; 12 | 13 | /** 14 | * This serializer can serialize any object of POJO class 15 | * 16 | * @author Jason Guo 17 | * 18 | * @param 19 | * POJO class. The class should have a constructor without any 20 | * arguments and have setter and getter for every member variable 21 | * 22 | */ 23 | 24 | public class GenericSerializer implements Serializer { 25 | 26 | private Class type; 27 | private ObjectMapper objectMapper = new ObjectMapper(); 28 | 29 | public GenericSerializer() {} 30 | 31 | public GenericSerializer(Class type) { 32 | this.type = type; 33 | } 34 | 35 | @SuppressWarnings("unchecked") 36 | @Override 37 | public void configure(Map configs, boolean isKey) { 38 | if(type != null) { 39 | return; 40 | } 41 | String typeProp = isKey ? "key.serializer.type" : "value.serializer.type"; 42 | String typeName = (String)configs.get(typeProp); 43 | try { 44 | type = (Class)Class.forName(typeName); 45 | } catch (Exception ex) { 46 | throw new SerializationException("Failed to initialize GenericSerializer for " + typeName, ex); 47 | } 48 | } 49 | 50 | @Override 51 | public byte[] serialize(String topic, T object) { 52 | if (object == null) { 53 | return null; 54 | } 55 | try { 56 | return this.objectMapper.writerFor(type).writeValueAsBytes(object); 57 | } catch (IOException ex) { 58 | throw new SerializationException(ex); 59 | } 60 | } 61 | 62 | @Override 63 | public void close() { 64 | } 65 | 66 | } -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/stream/serdes/SerdesFactory.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.stream.serdes; 2 | 3 | import org.apache.kafka.common.serialization.Serde; 4 | import org.apache.kafka.common.serialization.Serdes; 5 | 6 | /** 7 | * This factory can create Serde for any POJO class
8 | * Be careful, the class should have a constructor without any arguments 9 | * and have setter and getter for every member variable 10 | * @author Jason Guo 11 | * 12 | */ 13 | 14 | public class SerdesFactory { 15 | 16 | /** 17 | * @param The class should have a constructor without any 18 | * arguments and have setter and getter for every member variable 19 | * @param pojoClass POJO class. 20 | * @return Instance of {@link Serde} 21 | */ 22 | public static Serde serdFrom(Class pojoClass) { 23 | return Serdes.serdeFrom(new GenericSerializer(pojoClass), new GenericDeserializer(pojoClass)); 24 | } 25 | 26 | } 27 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/java/com/jasongj/kafka/stream/timeextractor/OrderTimestampExtractor.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka.stream.timeextractor; 2 | 3 | import java.time.LocalDateTime; 4 | import java.time.ZoneOffset; 5 | 6 | import org.apache.kafka.clients.consumer.ConsumerRecord; 7 | import org.apache.kafka.streams.processor.TimestampExtractor; 8 | 9 | import com.fasterxml.jackson.databind.JsonNode; 10 | import com.jasongj.kafka.stream.model.Item; 11 | import com.jasongj.kafka.stream.model.Order; 12 | import com.jasongj.kafka.stream.model.User; 13 | 14 | public class OrderTimestampExtractor implements TimestampExtractor { 15 | 16 | @Override 17 | public long extract(ConsumerRecord record) { 18 | Object value = record.value(); 19 | if (record.value() instanceof Order) { 20 | Order order = (Order) value; 21 | return order.getTransactionDate(); 22 | } 23 | if (value instanceof JsonNode) { 24 | return ((JsonNode) record.value()).get("transactionDate").longValue(); 25 | } 26 | if (value instanceof Item) { 27 | return LocalDateTime.of(2015, 12,11,1,0,10).toEpochSecond(ZoneOffset.UTC) * 1000; 28 | } 29 | if (value instanceof User) { 30 | return LocalDateTime.of(2015, 12,11,0,0,10).toEpochSecond(ZoneOffset.UTC) * 1000; 31 | } 32 | return LocalDateTime.of(2015, 11,10,0,0,10).toEpochSecond(ZoneOffset.UTC) * 1000; 33 | // throw new IllegalArgumentException("OrderTimestampExtractor cannot recognize the record value " + record.value()); 34 | } 35 | 36 | } 37 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/resources/items.csv: -------------------------------------------------------------------------------- 1 | iphone, BJ, phone, 5388.88 2 | ipad, SH, pad, 4888.88 3 | iwatch, SZ, watch, 2668.88 4 | ipod, GZ, pod, 1888.88 -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/resources/log4j.properties: -------------------------------------------------------------------------------- 1 | log4j.rootLogger=INFO, stdout 2 | 3 | log4j.appender.stdout=org.apache.log4j.ConsoleAppender 4 | log4j.appender.stdout.layout=org.apache.log4j.PatternLayout 5 | log4j.appender.stdout.layout.ConversionPattern=[%d] %p %m (%c)%n 6 | 7 | #log4j.appender.fileAppender=org.apache.log4j.FileAppender 8 | #log4j.appender.fileAppender.File=kafka-request.log 9 | #log4j.appender.fileAppender.layout=org.apache.log4j.PatternLayout 10 | #log4j.appender.fileAppender.layout.ConversionPattern= %-4r [%t] %-5p %c %x - %m%n 11 | 12 | 13 | # Turn on all our debugging info 14 | log4j.logger.kafka=WARN 15 | log4j.logger.org=WARN 16 | -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/resources/orders.csv: -------------------------------------------------------------------------------- 1 | Jack, iphone, 2016-11-11 00:00:01, 3 2 | Jack, ipad, 2016-11-11 00:00:02, 4 3 | Jack, iwatch, 2016-11-11 00:00:03, 5 4 | Jack, ipod, 2016-11-11 00:00:04, 4 5 | 6 | Lily, ipad, 2016-11-11 00:00:06, 3 7 | Lily, iwatch, 2016-11-11 00:00:07, 4 8 | Lily, iphone, 2016-11-11 00:00:08, 2 9 | Lily, ipod, 2016-11-11 00:00:09, 3 10 | 11 | Mike, ipad, 2016-11-11 00:00:11, 2 12 | Mike, iwatch, 2016-11-11 00:00:12, 3 13 | Mike, iphone, 2016-11-11 00:00:13, 4 14 | Mike, ipod, 2016-11-11 00:00:14, 3 15 | 16 | Lucy, ipod, 2016-11-11 00:00:16, 3 17 | Lucy, ipad, 2016-11-11 00:00:17, 4 18 | Lucy, iwatch, 2016-11-11 00:00:18, 3 19 | Lucy, iphone, 2016-11-11 00:00:19, 5 -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/main/resources/users.csv: -------------------------------------------------------------------------------- 1 | Jack, BJ, male, 23 2 | Lily, SH, female, 21 3 | Mike, SZ, male, 22 4 | Lucy, GZ, female, 20 -------------------------------------------------------------------------------- /demokafka.0.10.1.0/src/test/java/com/jasongj/kafka/AppTest.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka; 2 | 3 | import junit.framework.Test; 4 | import junit.framework.TestCase; 5 | import junit.framework.TestSuite; 6 | 7 | /** 8 | * Unit test for simple App. 9 | */ 10 | public class AppTest 11 | extends TestCase 12 | { 13 | /** 14 | * Create the test case 15 | * 16 | * @param testName name of the test case 17 | */ 18 | public AppTest( String testName ) 19 | { 20 | super( testName ); 21 | } 22 | 23 | /** 24 | * @return the suite of tests being tested 25 | */ 26 | public static Test suite() 27 | { 28 | return new TestSuite( AppTest.class ); 29 | } 30 | 31 | /** 32 | * Rigourous Test :-) 33 | */ 34 | public void testApp() 35 | { 36 | assertTrue( true ); 37 | } 38 | } 39 | -------------------------------------------------------------------------------- /demokafka.0.8.2.2/pom.xml: -------------------------------------------------------------------------------- 1 | 3 | 4.0.0 4 | 5 | 6 | demokafka.0.8.2.2 7 | 0.8.2.2 8 | jar 9 | 10 | demokafka.0.8.2.2 11 | http://www.jasongj.com 12 | 13 | 14 | com.jasongj.kafka 15 | demokafka 16 | 1.0.0 17 | ../pom.xml 18 | 19 | 20 | 21 | 22 | org.apache.kafka 23 | kafka_2.11 24 | 0.8.2.1 25 | 26 | 27 | 28 | org.apache.kafka 29 | kafka-clients 30 | 3.7.0 31 | 32 | 33 | 34 | 35 | -------------------------------------------------------------------------------- /demokafka.0.8.2.2/src/main/java/com/jasongj/kafka/DemoHighLevelConsumer.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka; 2 | 3 | import java.util.HashMap; 4 | import java.util.List; 5 | import java.util.Map; 6 | import java.util.Properties; 7 | 8 | import kafka.consumer.Consumer; 9 | import kafka.consumer.ConsumerConfig; 10 | import kafka.consumer.ConsumerIterator; 11 | import kafka.consumer.KafkaStream; 12 | import kafka.javaapi.consumer.ConsumerConnector; 13 | import kafka.message.MessageAndMetadata; 14 | 15 | public class DemoHighLevelConsumer { 16 | 17 | public static void main(String[] args) { 18 | args = new String[] { "zookeeper0:2181/kafka", "topic1", "group2", "consumer1" }; 19 | if (args == null || args.length != 4) { 20 | System.err.println("Usage:\n\tjava -jar kafka_consumer.jar ${zookeeper_list} ${topic_name} ${group_name} ${consumer_id}"); 21 | System.exit(1); 22 | } 23 | String zk = args[0]; 24 | String topic = args[1]; 25 | String groupid = args[2]; 26 | String consumerid = args[3]; 27 | Properties props = new Properties(); 28 | props.put("zookeeper.connect", zk); 29 | props.put("group.id", groupid); 30 | props.put("client.id", "test"); 31 | props.put("consumer.id", consumerid); 32 | props.put("auto.offset.reset", "largest"); 33 | props.put("auto.commit.enable", "false"); 34 | props.put("auto.commit.interval.ms", "60000"); 35 | 36 | ConsumerConfig consumerConfig = new ConsumerConfig(props); 37 | ConsumerConnector consumerConnector = Consumer.createJavaConsumerConnector(consumerConfig); 38 | 39 | Map topicCountMap = new HashMap(); 40 | topicCountMap.put(topic, 1); 41 | Map>> consumerMap = consumerConnector.createMessageStreams(topicCountMap); 42 | 43 | KafkaStream stream1 = consumerMap.get(topic).get(0); 44 | ConsumerIterator interator = stream1.iterator(); 45 | while (interator.hasNext()) { 46 | MessageAndMetadata messageAndMetadata = interator.next(); 47 | String message = String.format( 48 | "Topic:%s, GroupID:%s, Consumer ID:%s, PartitionID:%s, Offset:%s, Message Key:%s, Message Payload: %s", 49 | messageAndMetadata.topic(), groupid, consumerid, messageAndMetadata.partition(), 50 | messageAndMetadata.offset(), new String(messageAndMetadata.key()), 51 | new String(messageAndMetadata.message())); 52 | System.out.println(message); 53 | consumerConnector.commitOffsets(); 54 | } 55 | } 56 | 57 | } 58 | -------------------------------------------------------------------------------- /demokafka.0.8.2.2/src/main/java/com/jasongj/kafka/DemoLowLevelConsumer.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka; 2 | 3 | import java.nio.ByteBuffer; 4 | 5 | import kafka.api.FetchRequest; 6 | import kafka.api.FetchRequestBuilder; 7 | import kafka.javaapi.FetchResponse; 8 | import kafka.javaapi.consumer.SimpleConsumer; 9 | import kafka.javaapi.message.ByteBufferMessageSet; 10 | import kafka.message.MessageAndOffset; 11 | 12 | public class DemoLowLevelConsumer { 13 | 14 | public static void main(String[] args) throws Exception { 15 | final String topic = "topic1"; 16 | String clientID = "DemoLowLevelConsumer1"; 17 | SimpleConsumer simpleConsumer = new SimpleConsumer("kafka0", 9092, 100000, 64 * 1000000, clientID); 18 | FetchRequest req = new FetchRequestBuilder().clientId(clientID) 19 | .addFetch(topic, 0, 0L, 50).addFetch(topic, 1, 0L, 5000).addFetch(topic, 2, 0L, 1000000).build(); 20 | FetchResponse fetchResponse = simpleConsumer.fetch(req); 21 | ByteBufferMessageSet messageSet = (ByteBufferMessageSet) fetchResponse.messageSet(topic, 0); 22 | for (MessageAndOffset messageAndOffset : messageSet) { 23 | ByteBuffer payload = messageAndOffset.message().payload(); 24 | long offset = messageAndOffset.offset(); 25 | byte[] bytes = new byte[payload.limit()]; 26 | payload.get(bytes); 27 | System.out.println("Offset:" + offset + ", Payload:" + new String(bytes, "UTF-8")); 28 | } 29 | } 30 | 31 | } 32 | -------------------------------------------------------------------------------- /demokafka.0.8.2.2/src/main/java/com/jasongj/kafka/HashPartitioner.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka; 2 | 3 | import kafka.producer.Partitioner; 4 | import kafka.utils.VerifiableProperties; 5 | 6 | public class HashPartitioner implements Partitioner { 7 | 8 | public HashPartitioner(VerifiableProperties verifiableProperties) {} 9 | 10 | @Override 11 | public int partition(Object key, int numPartitions) { 12 | if ((key instanceof Integer)) { 13 | return Math.abs(Integer.parseInt(key.toString())) % numPartitions; 14 | } 15 | return Math.abs(key.hashCode() % numPartitions); 16 | } 17 | } 18 | 19 | 20 | -------------------------------------------------------------------------------- /demokafka.0.8.2.2/src/main/java/com/jasongj/kafka/ProducerDemo.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka; 2 | 3 | import java.util.Properties; 4 | 5 | import kafka.javaapi.producer.Producer; 6 | import kafka.producer.KeyedMessage; 7 | import kafka.producer.ProducerConfig; 8 | import kafka.serializer.StringEncoder; 9 | 10 | public class ProducerDemo { 11 | 12 | static private final String TOPIC = "topic1"; 13 | static private final String BROKER_LIST = "kafka0:9092"; 14 | 15 | 16 | public static void main(String[] args) throws Exception { 17 | Producer producer = initProducer(); 18 | sendOne(producer, TOPIC); 19 | } 20 | 21 | private static Producer initProducer() { 22 | Properties props = new Properties(); 23 | props.put("metadata.broker.list", BROKER_LIST); 24 | // props.put("serializer.class", "kafka.serializer.StringEncoder"); 25 | props.put("serializer.class", StringEncoder.class.getName()); 26 | props.put("partitioner.class", HashPartitioner.class.getName()); 27 | // props.put("compression.codec", "0"); 28 | props.put("producer.type", "sync"); 29 | props.put("batch.num.messages", "1"); 30 | props.put("queue.buffering.max.messages", "1000000"); 31 | props.put("queue.enqueue.timeout.ms", "20000000"); 32 | 33 | 34 | ProducerConfig config = new ProducerConfig(props); 35 | Producer producer = new Producer(config); 36 | return producer; 37 | } 38 | 39 | public static void sendOne(Producer producer, String topic) throws InterruptedException { 40 | boolean sleepFlag = false; 41 | KeyedMessage message1 = new KeyedMessage(topic, "0", "test 0"); 42 | producer.send(message1); 43 | if(sleepFlag) Thread.sleep(5000); 44 | KeyedMessage message2 = new KeyedMessage(topic, "1", "test 1"); 45 | producer.send(message2); 46 | if(sleepFlag) Thread.sleep(5000); 47 | KeyedMessage message3 = new KeyedMessage(topic, "2", "test 2"); 48 | producer.send(message3); 49 | if(sleepFlag) Thread.sleep(5000); 50 | KeyedMessage message4 = new KeyedMessage(topic, "3", "test 3"); 51 | producer.send(message4); 52 | if(sleepFlag) Thread.sleep(5000); 53 | KeyedMessage message5 = new KeyedMessage(topic, "4", "test 4"); 54 | producer.send(message5); 55 | if(sleepFlag) Thread.sleep(5000); 56 | KeyedMessage message6 = new KeyedMessage(topic, "5", "test 5"); 57 | producer.send(message6); 58 | if(sleepFlag) Thread.sleep(5000); 59 | KeyedMessage message7 = new KeyedMessage(topic, "6", "test 6"); 60 | producer.send(message7); 61 | if(sleepFlag) Thread.sleep(5000); 62 | KeyedMessage message8 = new KeyedMessage(topic, "7", "test 7"); 63 | producer.send(message8); 64 | if(sleepFlag) Thread.sleep(5000); 65 | KeyedMessage message9 = new KeyedMessage(topic, "8", "test 8"); 66 | producer.send(message9); 67 | if(sleepFlag) Thread.sleep(5000); 68 | producer.close(); 69 | } 70 | 71 | } 72 | -------------------------------------------------------------------------------- /demokafka.0.8.2.2/src/main/java/com/jasongj/kafka/RoundRobinPartitioner.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka; 2 | 3 | import java.util.concurrent.atomic.AtomicLong; 4 | 5 | import kafka.producer.Partitioner; 6 | import kafka.utils.VerifiableProperties; 7 | 8 | public class RoundRobinPartitioner implements Partitioner { 9 | 10 | private static AtomicLong next = new AtomicLong(); 11 | 12 | public RoundRobinPartitioner(VerifiableProperties verifiableProperties) {} 13 | 14 | @Override 15 | public int partition(Object key, int numPartitions) { 16 | long nextIndex = next.incrementAndGet(); 17 | return (int)nextIndex % numPartitions; 18 | } 19 | } 20 | 21 | 22 | -------------------------------------------------------------------------------- /demokafka.0.8.2.2/src/main/resources/log4j.properties: -------------------------------------------------------------------------------- 1 | log4j.rootLogger=INFO, stdout 2 | 3 | log4j.appender.stdout=org.apache.log4j.ConsoleAppender 4 | log4j.appender.stdout.layout=org.apache.log4j.PatternLayout 5 | log4j.appender.stdout.layout.ConversionPattern=[%d] %p %m (%c)%n 6 | 7 | #log4j.appender.fileAppender=org.apache.log4j.FileAppender 8 | #log4j.appender.fileAppender.File=kafka-request.log 9 | #log4j.appender.fileAppender.layout=org.apache.log4j.PatternLayout 10 | #log4j.appender.fileAppender.layout.ConversionPattern= %-4r [%t] %-5p %c %x - %m%n 11 | 12 | 13 | # Turn on all our debugging info 14 | log4j.logger.kafka=WARN 15 | log4j.logger.org=WARN 16 | -------------------------------------------------------------------------------- /demokafka.0.8.2.2/src/test/java/com/jasongj/kafka/AppTest.java: -------------------------------------------------------------------------------- 1 | package com.jasongj.kafka; 2 | 3 | import junit.framework.Test; 4 | import junit.framework.TestCase; 5 | import junit.framework.TestSuite; 6 | 7 | /** 8 | * Unit test for simple App. 9 | */ 10 | public class AppTest 11 | extends TestCase 12 | { 13 | /** 14 | * Create the test case 15 | * 16 | * @param testName name of the test case 17 | */ 18 | public AppTest( String testName ) 19 | { 20 | super( testName ); 21 | } 22 | 23 | /** 24 | * @return the suite of tests being tested 25 | */ 26 | public static Test suite() 27 | { 28 | return new TestSuite( AppTest.class ); 29 | } 30 | 31 | /** 32 | * Rigourous Test :-) 33 | */ 34 | public void testApp() 35 | { 36 | assertTrue( true ); 37 | } 38 | } 39 | -------------------------------------------------------------------------------- /pom.xml: -------------------------------------------------------------------------------- 1 | 3 | 4.0.0 4 | 5 | com.jasongj.kafka 6 | demokafka 7 | 1.0.0 8 | pom 9 | 10 | demokafka 11 | http://www.jasongj.com 12 | 13 | 14 | demokafka.0.8.2.2 15 | demokafka.0.10.1.0 16 | 17 | 18 | 19 | UTF-8 20 | 1.8 21 | 1.8 22 | 23 | 24 | 25 | 26 | Aliyun 27 | Aliyun Repository 28 | https://maven.aliyun.com/nexus/content/groups/public/ 29 | 30 | true 31 | 32 | 33 | false 34 | 35 | 36 | 37 | 38 | 39 | Aliyun 40 | Aliyun Repository 41 | https://maven.aliyun.com/nexus/content/groups/public/ 42 | 43 | true 44 | 45 | 46 | false 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | junit 55 | junit 56 | 4.11 57 | test 58 | 59 | 60 | 61 | com.google.guava 62 | guava 63 | 14.0-rc1 64 | 65 | 66 | org.scala-lang 67 | scala-library 68 | 2.11.5 69 | 70 | 71 | org.apache.zookeeper 72 | zookeeper 73 | 3.4.6 74 | 75 | 76 | org.xerial.snappy 77 | snappy-java 78 | 1.1.1.6 79 | 80 | 81 | org.apache.commons 82 | commons-lang3 83 | 3.5 84 | 85 | 86 | 87 | 88 | 89 | maven-assembly-plugin 90 | 91 | 92 | jar-dependencies 93 | package 94 | 95 | single 96 | 97 | 98 | true 99 | 100 | 101 | com.jasongj.kafka.DemoConsumer 102 | 103 | 104 | 105 | jar-with-dependencies 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | --------------------------------------------------------------------------------