| /* |
| * 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.StreamsBuilder; |
| import org.apache.kafka.streams.StreamsConfig; |
| import org.apache.kafka.streams.kstream.KStream; |
| import org.apache.kafka.streams.processor.AbstractProcessor; |
| 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 < 1) { |
| System.err.println("StreamsUpgradeTest requires one argument (properties-file) but provided none"); |
| } |
| final String propFileName = args[0]; |
| |
| final Properties streamsProperties = Utils.loadProps(propFileName); |
| |
| System.out.println("StreamsTest instance started (StreamsUpgradeTest v2.3)"); |
| System.out.println("props=" + streamsProperties); |
| |
| final StreamsBuilder builder = new StreamsBuilder(); |
| 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.put(StreamsConfig.COMMIT_INTERVAL_MS_CONFIG, 1000L); |
| config.putAll(streamsProperties); |
| |
| final KafkaStreams streams = new KafkaStreams(builder.build(), config); |
| streams.start(); |
| |
| Runtime.getRuntime().addShutdownHook(new Thread(() -> { |
| streams.close(); |
| System.out.println("UPGRADE-TEST-CLIENT-CLOSED"); |
| System.out.flush(); |
| })); |
| } |
| |
| private static <K, V> ProcessorSupplier<K, V> printProcessorSupplier() { |
| return () -> new AbstractProcessor<K, V>() { |
| private int numRecordsProcessed = 0; |
| |
| @Override |
| public void init(final ProcessorContext context) { |
| System.out.println("[2.3] 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 close() {} |
| }; |
| } |
| } |