| /** |
| * 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.apex.examples.exactlyonce; |
| |
| import java.io.File; |
| |
| import org.junit.Assert; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.apex.api.EmbeddedAppLauncher; |
| import org.apache.apex.api.Launcher; |
| import org.apache.apex.api.Launcher.AppHandle; |
| import org.apache.apex.api.Launcher.LaunchMode; |
| import org.apache.apex.api.Launcher.ShutdownMode; |
| import org.apache.commons.io.FileUtils; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.net.NetUtils; |
| |
| import com.datatorrent.api.Attribute; |
| |
| import info.batey.kafka.unit.KafkaUnit; |
| import info.batey.kafka.unit.KafkaUnitRule; |
| import kafka.producer.KeyedMessage; |
| |
| public class ExactlyOnceFileOutputAppTest |
| { |
| private static final Logger LOG = LoggerFactory.getLogger(ExactlyOnceJdbcOutputTest.class); |
| private static final String TARGET_DIR = "target/atomicFileOutput"; |
| |
| private final int brokerPort = NetUtils.getFreeSocketPort(); |
| private final int zkPort = NetUtils.getFreeSocketPort(); |
| |
| @Rule |
| public KafkaUnitRule kafkaUnitRule = new KafkaUnitRule(zkPort, brokerPort); |
| |
| { |
| // required to avoid 50 partitions auto creation |
| this.kafkaUnitRule.getKafkaUnit().setKafkaBrokerConfig("num.partitions", "1"); |
| this.kafkaUnitRule.getKafkaUnit().setKafkaBrokerConfig("offsets.topic.num.partitions", "1"); |
| } |
| |
| @Test |
| public void testApplication() throws Exception |
| { |
| File targetDir = new File(TARGET_DIR); |
| FileUtils.deleteDirectory(targetDir); |
| FileUtils.forceMkdir(targetDir); |
| |
| KafkaUnit ku = kafkaUnitRule.getKafkaUnit(); |
| String topicName = "testTopic"; |
| // topic creation is async and the producer may also auto-create it |
| ku.createTopic(topicName, 1); |
| |
| // produce test data |
| String[] words = "count count the words from kafka and store them in a file".split("\\s+"); |
| for (String word : words) { |
| ku.sendMessages(new KeyedMessage<String, String>(topicName, word)); |
| } |
| |
| Configuration conf = new Configuration(false); |
| conf.addResource(this.getClass().getResourceAsStream("/META-INF/properties.xml")); |
| conf.set("apex.operator.kafkaInput.prop.topics", topicName); |
| conf.set("apex.operator.kafkaInput.prop.clusters", "localhost:" + brokerPort); |
| conf.set("apex.operator.kafkaInput.prop.maxTuplesPerWindow", "2"); // consume one word per window |
| conf.set("apex.operator.kafkaInput.prop.initialOffset", "EARLIEST"); |
| conf.set("apex.operator.fileWriter.prop.filePath", TARGET_DIR); |
| |
| EmbeddedAppLauncher<?> launcher = Launcher.getLauncher(LaunchMode.EMBEDDED); |
| Attribute.AttributeMap launchAttributes = new Attribute.AttributeMap.DefaultAttributeMap(); |
| launchAttributes.put(EmbeddedAppLauncher.RUN_ASYNC, true); // terminate after results are available |
| AppHandle appHandle = launcher.launchApp(new ExactlyOnceFileOutputApp(), conf, launchAttributes); |
| |
| long timeout = System.currentTimeMillis() + 60000; // 60s timeout |
| |
| File outputFile = new File(TARGET_DIR, ExactlyOnceFileOutputApp.FileWriter.FILE_NAME_PREFIX); |
| while (!outputFile.exists() && timeout > System.currentTimeMillis()) { |
| Thread.sleep(1000); |
| LOG.debug("Waiting for {}", outputFile); |
| } |
| |
| Assert.assertTrue("output file exists " + ExactlyOnceFileOutputApp.FileWriter.FILE_NAME_PREFIX, outputFile.exists() && |
| outputFile.isFile()); |
| |
| String result = FileUtils.readFileToString(outputFile); |
| Assert.assertTrue(result.contains("count=2")); |
| |
| appHandle.shutdown(ShutdownMode.KILL); |
| } |
| |
| } |