| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package kafka.examples; |
| |
| |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Properties; |
| import kafka.consumer.ConsumerConfig; |
| import kafka.consumer.ConsumerIterator; |
| import kafka.consumer.KafkaStream; |
| import kafka.javaapi.consumer.ConsumerConnector; |
| import kafka.message.Message; |
| |
| |
| public class Consumer extends Thread |
| { |
| private final ConsumerConnector consumer; |
| private final String topic; |
| |
| public Consumer(String topic) |
| { |
| consumer = kafka.consumer.Consumer.createJavaConsumerConnector( |
| createConsumerConfig()); |
| this.topic = topic; |
| } |
| |
| private static ConsumerConfig createConsumerConfig() |
| { |
| Properties props = new Properties(); |
| props.put("zk.connect", KafkaProperties.zkConnect); |
| props.put("groupid", KafkaProperties.groupId); |
| props.put("zk.sessiontimeout.ms", "400"); |
| props.put("zk.synctime.ms", "200"); |
| props.put("autocommit.interval.ms", "1000"); |
| |
| return new ConsumerConfig(props); |
| |
| } |
| |
| public void run() { |
| Map<String, Integer> topicCountMap = new HashMap<String, Integer>(); |
| topicCountMap.put(topic, new Integer(1)); |
| Map<String, List<KafkaStream<Message>>> consumerMap = consumer.createMessageStreams(topicCountMap); |
| KafkaStream<Message> stream = consumerMap.get(topic).get(0); |
| ConsumerIterator<Message> it = stream.iterator(); |
| while(it.hasNext()) |
| System.out.println(ExampleUtils.getMessage(it.next().message())); |
| } |
| } |