CKafka系列学习文章 - Java工程调用Ckafka (六)

import java.util.Collections;
import java.util.Date;
import java.util.Properties;
import java.util.Random;
import kafka.javaapi.producer.Producer;
import kafka.producer.KeyedMessage;
import kafka.producer.ProducerConfig;
 
/**
 * 详细可以参考：https://cwiki.apache.org/confluence/display/KAFKA/0.8.0+Producer+Example
 * @author Fa
 *
 */
public class ProducerDemo {
    public static void main(String[] args) {
        Random rnd = new Random();
        int events=100;
         // 设置配置属性
        Properties props = new Properties();
        props.put("bootstrap.servers","10.1.1.90:9092");
        props.put("security.protocol","PLAINTEXT");
        props.put("sasl.mechanism","PLAIN");
        props.put("session.timeout.ms",30000);
        props.put("key.serializer", "org.apache.kafka.common.serialization.IntegerSerializer");
        props.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");
        props.put("sasl.jaas.config","org.apache.kafka.common.security.plain.PlainLoginModule required username=\"yourinstance#yourusername\" password=\"yourpasswd\";");
        props.put("acks", "1");
        ProducerConfig config = new ProducerConfig(props);
        // 创建producer
        Producer<String, String> producer = new Producer<String, String>(config);
        // 产生并发送消息
        long start=System.currentTimeMillis();
        for (long i = 0; i < events; i++) {
            long runtime = new Date().getTime();
            String ip = "192.168.2." + i;//rnd.nextInt(255);
            String msg = runtime + ",www.example.com," + ip;
            //如果topic不存在，则会自动创建，默认replication-factor为1，partitions为0
            KeyedMessage<String, String> data = new KeyedMessage<String, String>("page_visits", ip, msg);
            producer.send(data);
        }
        System.out.println("耗时:" + (System.currentTimeMillis() - start));
        // 关闭producer
        producer.close();
    }
}

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import kafka.consumer.Consumer;
import kafka.consumer.ConsumerConfig;
import kafka.consumer.KafkaStream;
import kafka.javaapi.consumer.ConsumerConnector;
/**
 * 详细可以参考：https://cwiki.apache.org/confluence/display/KAFKA/Consumer+Group+Example
 * 
 * @author Fa
 *
 */
public class ConsumerDemo {
    private final ConsumerConnector consumer;
    private final String topic;
    private ExecutorService executor;
    public ConsumerDemo(String a_zookeeper, String a_groupId, String a_topic) {
        consumer = Consumer.createJavaConsumerConnector(createConsumerConfig(a_zookeeper,a_groupId));
        this.topic = a_topic;
    }
    public void shutdown() {
        if (consumer != null)
            consumer.shutdown();
        if (executor != null)
            executor.shutdown();
    }
    public void run(int numThreads) {
        Map<String, Integer> topicCountMap = new HashMap<String, Integer>();
        topicCountMap.put(topic, new Integer(numThreads));
        Map<String, List<KafkaStream<byte[], byte[]>>> consumerMap = consumer.createMessageStreams(topicCountMap);
        List<KafkaStream<byte[], byte[]>> streams = consumerMap.get(topic);
         // now launch all the threads
        executor = Executors.newFixedThreadPool(numThreads);
         // now create an object to consume the messages
        int threadNumber = 0;
        for (final KafkaStream stream : streams) {
            executor.submit(new ConsumerMsgTask(stream, threadNumber));
            threadNumber++;
        }
    }
    private static ConsumerConfig createConsumerConfig(String a_bootservers,String a_groupId) {
        Properties props = new Properties();
        props.put("group.id", a_groupId);
        props.put("auto.commit.interval.ms", "1000");
        props.put("bootstrap.servers",a_bootservers);
        props.put("security.protocol","PLAINTEXT");
        props.put("sasl.mechanism","PLAIN");
        props.put("key.serializer", "org.apache.kafka.common.serialization.IntegerSerializer");
        props.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");
        props.put("session.timeout.ms",30000);
        props.put("sasl.jaas.config","org.apache.kafka.common.security.plain.PlainLoginModule required username=\"yourinstance#yourusername\" password=\"yourpasswd\";");
        props.put("acks", "1");
        return new ConsumerConfig(props);
    }
    public static void main(String[] arg) {
        String[] args = { "10.1.1.90:9092", "console-consumer-4626", "bowenqiu_topic1", "3" };
        String bootservers = args[0];
        String groupId = args[1];
        String topic = args[2];
        int threads = Integer.parseInt(args[3]);
        ConsumerDemo demo = new ConsumerDemo(bootservers, groupId, topic);
        demo.run(threads);
        try {
            Thread.sleep(10000);
        } catch (InterruptedException ie) {

        }
        demo.shutdown();
    }
}