| /* |
| * 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 org.apache.kafka.streams.tests; |
| |
| import org.apache.kafka.common.utils.Utils; |
| import org.apache.kafka.streams.KafkaStreams; |
| import org.apache.kafka.streams.StreamsConfig; |
| import org.apache.kafka.streams.kstream.KStream; |
| import org.apache.kafka.streams.kstream.KStreamBuilder; |
| import org.apache.kafka.streams.processor.AbstractProcessor; |
| import org.apache.kafka.streams.processor.Processor; |
| import org.apache.kafka.streams.processor.ProcessorContext; |
| import org.apache.kafka.streams.processor.ProcessorSupplier; |
| |
| import java.util.Properties; |
| |
| public class StreamsUpgradeTest { |
| |
| @SuppressWarnings("unchecked") |
| public static void main(final String[] args) throws Exception { |
| if (args.length < 3) { |
| System.err.println("StreamsUpgradeTest requires three argument (kafka-url, zookeeper-url, properties-file) but only " + args.length + " provided: " |
| + (args.length > 0 ? args[0] + " " : "") |
| + (args.length > 1 ? args[1] : "")); |
| } |
| final String kafka = args[0]; |
| final String zookeeper = args[1]; |
| final String propFileName = args.length > 2 ? args[2] : null; |
| |
| final Properties streamsProperties = Utils.loadProps(propFileName); |
| |
| System.out.println("StreamsTest instance started (StreamsUpgradeTest v0.10.0)"); |
| System.out.println("kafka=" + kafka); |
| System.out.println("zookeeper=" + zookeeper); |
| System.out.println("props=" + streamsProperties); |
| |
| final KStreamBuilder builder = new KStreamBuilder(); |
| final KStream dataStream = builder.stream("data"); |
| dataStream.process(printProcessorSupplier()); |
| dataStream.to("echo"); |
| |
| final Properties config = new Properties(); |
| config.setProperty(StreamsConfig.APPLICATION_ID_CONFIG, "StreamsUpgradeTest"); |
| config.setProperty(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, kafka); |
| config.setProperty(StreamsConfig.ZOOKEEPER_CONNECT_CONFIG, zookeeper); |
| config.put(StreamsConfig.COMMIT_INTERVAL_MS_CONFIG, 1000); |
| config.putAll(streamsProperties); |
| |
| final KafkaStreams streams = new KafkaStreams(builder, config); |
| streams.start(); |
| |
| Runtime.getRuntime().addShutdownHook(new Thread() { |
| @Override |
| public void run() { |
| System.out.println("closing Kafka Streams instance"); |
| System.out.flush(); |
| streams.close(); |
| System.out.println("UPGRADE-TEST-CLIENT-CLOSED"); |
| System.out.flush(); |
| } |
| }); |
| } |
| |
| private static <K, V> ProcessorSupplier<K, V> printProcessorSupplier() { |
| return new ProcessorSupplier<K, V>() { |
| public Processor<K, V> get() { |
| return new AbstractProcessor<K, V>() { |
| private int numRecordsProcessed = 0; |
| |
| @Override |
| public void init(final ProcessorContext context) { |
| System.out.println("[0.10.0] initializing processor: topic=data taskId=" + context.taskId()); |
| numRecordsProcessed = 0; |
| } |
| |
| @Override |
| public void process(final K key, final V value) { |
| numRecordsProcessed++; |
| if (numRecordsProcessed % 100 == 0) { |
| System.out.println("processed " + numRecordsProcessed + " records from topic=data"); |
| } |
| } |
| |
| @Override |
| public void punctuate(final long timestamp) {} |
| |
| @Override |
| public void close() {} |
| }; |
| } |
| }; |
| } |
| } |