| /** |
| * Put your copyright and license info here. |
| */ |
| package com.example.myapexapp; |
| |
| import java.io.File; |
| import java.sql.Connection; |
| import java.sql.DriverManager; |
| import java.sql.ResultSet; |
| import java.sql.Statement; |
| import java.util.HashSet; |
| |
| import javax.validation.ConstraintViolationException; |
| |
| import org.junit.After; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.apache.commons.io.FileUtils; |
| import org.apache.hadoop.conf.Configuration; |
| import org.junit.Test; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.datatorrent.api.LocalMode; |
| import com.datatorrent.contrib.kafka.KafkaOperatorTestBase; |
| import com.datatorrent.contrib.kafka.KafkaTestProducer; |
| import com.datatorrent.lib.db.jdbc.JdbcTransactionalStore; |
| import com.example.myapexapp.Application; |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Sets; |
| |
| /** |
| * Test the application in local mode. |
| */ |
| public class ApplicationTest |
| { |
| private final KafkaOperatorTestBase kafkaLauncher = new KafkaOperatorTestBase(); |
| private static final Logger LOG = LoggerFactory.getLogger(ApplicationTest.class); |
| private static final String KAFKA_TOPIC = "exactly-once-test"; |
| private static final String DB_DRIVER = "org.hsqldb.jdbcDriver"; |
| private static final String DB_URL = "jdbc:hsqldb:mem:test;sql.syntax_mys=true"; |
| private static final String TABLE_NAME = "WORDS"; |
| |
| @Before |
| public void beforeTest() throws Exception { |
| kafkaLauncher.baseDir = "target/" + this.getClass().getName(); |
| FileUtils.deleteDirectory(new File(kafkaLauncher.baseDir)); |
| kafkaLauncher.startZookeeper(); |
| kafkaLauncher.startKafkaServer(); |
| kafkaLauncher.createTopic(0, KAFKA_TOPIC); |
| |
| // setup hsqldb |
| Class.forName(DB_DRIVER).newInstance(); |
| |
| Connection con = DriverManager.getConnection(DB_URL); |
| Statement stmt = con.createStatement(); |
| |
| String createMetaTable = "CREATE TABLE IF NOT EXISTS " + JdbcTransactionalStore.DEFAULT_META_TABLE + " ( " |
| + JdbcTransactionalStore.DEFAULT_APP_ID_COL + " VARCHAR(100) NOT NULL, " |
| + JdbcTransactionalStore.DEFAULT_OPERATOR_ID_COL + " INT NOT NULL, " |
| + JdbcTransactionalStore.DEFAULT_WINDOW_COL + " BIGINT NOT NULL, " |
| + "UNIQUE (" + JdbcTransactionalStore.DEFAULT_APP_ID_COL + ", " |
| + JdbcTransactionalStore.DEFAULT_OPERATOR_ID_COL + ", " + JdbcTransactionalStore.DEFAULT_WINDOW_COL + ") " |
| + ")"; |
| stmt.executeUpdate(createMetaTable); |
| |
| String createTable = "CREATE TABLE IF NOT EXISTS " + TABLE_NAME |
| + "(word VARCHAR(255) not NULL, wcount INTEGER, PRIMARY KEY ( word ))"; |
| stmt.executeUpdate(createTable); |
| |
| } |
| |
| @After |
| public void afterTest() { |
| kafkaLauncher.stopKafkaServer(); |
| kafkaLauncher.stopZookeeper(); |
| } |
| |
| @Test |
| public void testApplication() throws Exception { |
| try { |
| // produce some test data |
| KafkaTestProducer p = new KafkaTestProducer(KAFKA_TOPIC); |
| String[] words = "count the words from kafka and store them in the db".split("\\s+"); |
| p.setMessages(Lists.newArrayList(words)); |
| new Thread(p).start(); |
| |
| LocalMode lma = LocalMode.newInstance(); |
| Configuration conf = new Configuration(false); |
| conf.addResource(this.getClass().getResourceAsStream("/META-INF/properties.xml")); |
| conf.set("dt.operator.kafkaInput.prop.topic", KAFKA_TOPIC); |
| conf.set("dt.operator.kafkaInput.prop.zookeeper", "localhost:" + KafkaOperatorTestBase.TEST_ZOOKEEPER_PORT[0]); |
| conf.set("dt.operator.kafkaInput.prop.maxTuplesPerWindow", "1"); // consume one word per window |
| conf.set("dt.operator.store.prop.store.databaseDriver", DB_DRIVER); |
| conf.set("dt.operator.store.prop.store.databaseUrl", DB_URL); |
| |
| lma.prepareDAG(new Application(), conf); |
| LocalMode.Controller lc = lma.getController(); |
| lc.runAsync(); // test will terminate after results are available |
| |
| HashSet<String> wordsSet = Sets.newHashSet(words); |
| Connection con = DriverManager.getConnection(DB_URL); |
| Statement stmt = con.createStatement(); |
| int rowCount = 0; |
| long timeout = System.currentTimeMillis() + 30000; // 30s timeout |
| while (rowCount < wordsSet.size() && timeout > System.currentTimeMillis()) { |
| Thread.sleep(1000); |
| String countQuery = "SELECT count(*) from " + TABLE_NAME; |
| ResultSet resultSet = stmt.executeQuery(countQuery); |
| resultSet.next(); |
| rowCount = resultSet.getInt(1); |
| resultSet.close(); |
| LOG.info("current row count in {} is {}", TABLE_NAME, rowCount); |
| } |
| Assert.assertEquals("number of words", wordsSet.size(), rowCount); |
| |
| lc.shutdown(); |
| |
| } catch (ConstraintViolationException e) { |
| Assert.fail("constraint violations: " + e.getConstraintViolations()); |
| } |
| } |
| |
| } |