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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2016-2018 Ericsson. All rights reserved.
* ================================================================================
* Licensed 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.apex.apps.uservice.test.adapt.kafka;
import static org.junit.Assert.assertEquals;
import java.io.IOException;
import java.nio.file.Files;
import java.util.Properties;
import org.I0Itec.zkclient.ZkClient;
import org.apache.kafka.common.utils.MockTime;
import org.apache.kafka.common.utils.Time;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.onap.policy.apex.core.infrastructure.messaging.MessagingException;
import org.onap.policy.apex.core.infrastructure.threading.ThreadUtilities;
import org.onap.policy.apex.model.basicmodel.concepts.ApexException;
import org.onap.policy.apex.service.engine.main.ApexMain;
import kafka.admin.AdminUtils;
import kafka.admin.RackAwareMode;
import kafka.server.KafkaConfig;
import kafka.server.KafkaServer;
import kafka.utils.TestUtils;
import kafka.utils.ZKStringSerializer$;
import kafka.utils.ZkUtils;
import kafka.zk.EmbeddedZookeeper;
public class TestKafka2Kafka {
// The method of starting an embedded Kafka server used in this example is based on the method
// on stack overflow at
// https://github.com/asmaier/mini-kafka
private static final long MAX_TEST_LENGTH = 20000;
private static final int EVENT_COUNT = 100;
private static final int EVENT_INTERVAL = 20;
private static final String ZKHOST = "127.0.0.1";
private static final String BROKERHOST = "127.0.0.1";
private static final String BROKERPORT = "39902";
private static EmbeddedZookeeper zkServer;
private static ZkClient zkClient;
private static KafkaServer kafkaServer;
@BeforeClass
public static void setupDummyKafkaServer() throws IOException {
// setup Zookeeper
zkServer = new EmbeddedZookeeper();
final String zkConnect = ZKHOST + ":" + zkServer.port();
zkClient = new ZkClient(zkConnect, 30000, 30000, ZKStringSerializer$.MODULE$);
final ZkUtils zkUtils = ZkUtils.apply(zkClient, false);
// setup Broker
final Properties brokerProps = new Properties();
brokerProps.setProperty("zookeeper.connect", zkConnect);
brokerProps.setProperty("broker.id", "0");
brokerProps.setProperty("log.dirs", Files.createTempDirectory("kafka-").toAbsolutePath().toString());
brokerProps.setProperty("listeners", "PLAINTEXT://" + BROKERHOST + ":" + BROKERPORT);
brokerProps.setProperty("offsets.topic.replication.factor", "1");
brokerProps.setProperty("transaction.state.log.replication.factor", "1");
brokerProps.setProperty("transaction.state.log.min.isr", "1");
final KafkaConfig config = new KafkaConfig(brokerProps);
final Time mock = new MockTime();
kafkaServer = TestUtils.createServer(config, mock);
// create topics
AdminUtils.createTopic(zkUtils, "apex-in-0", 1, 1, new Properties(), RackAwareMode.Disabled$.MODULE$);
AdminUtils.createTopic(zkUtils, "apex-in-1", 1, 1, new Properties(), RackAwareMode.Disabled$.MODULE$);
AdminUtils.createTopic(zkUtils, "apex-out", 1, 1, new Properties(), RackAwareMode.Disabled$.MODULE$);
}
@AfterClass
public static void shutdownDummyKafkaServer() throws IOException {
if (kafkaServer != null) {
kafkaServer.shutdown();
}
if (zkClient != null) {
zkClient.close();
}
if (zkServer != null) {
zkServer.shutdown();
}
}
@Test
public void testJsonKafkaEvents() throws MessagingException, ApexException {
final String[] args = {"src/test/resources/prodcons/Kafka2KafkaJsonEvent.json"};
testKafkaEvents(args, false, "json");
}
@Test
public void testXMLKafkaEvents() throws MessagingException, ApexException {
final String[] args = {"src/test/resources/prodcons/Kafka2KafkaXmlEvent.json"};
testKafkaEvents(args, true, "xml");
}
private void testKafkaEvents(final String[] args, final Boolean xmlEvents, final String topicSuffix)
throws MessagingException, ApexException {
final KafkaEventSubscriber subscriber =
new KafkaEventSubscriber("apex-out-" + topicSuffix, "localhost:" + BROKERPORT);
final KafkaEventProducer producer = new KafkaEventProducer("apex-in-" + topicSuffix, "localhost:" + BROKERPORT,
EVENT_COUNT, xmlEvents, EVENT_INTERVAL);
final ApexMain apexMain = new ApexMain(args);
ThreadUtilities.sleep(3000);
producer.sendEvents();
final long testStartTime = System.currentTimeMillis();
while (System.currentTimeMillis() < testStartTime + MAX_TEST_LENGTH
&& subscriber.getEventsReceivedCount() < EVENT_COUNT) {
ThreadUtilities.sleep(EVENT_INTERVAL);
}
ThreadUtilities.sleep(1000);
assertEquals(producer.getEventsSentCount(), subscriber.getEventsReceivedCount());
apexMain.shutdown();
subscriber.shutdown();
producer.shutdown();
ThreadUtilities.sleep(1000);
}
}
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