multibinder.TwoKafkaBindersApplicationTest.java Source code

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Here is the source code for multibinder.TwoKafkaBindersApplicationTest.java

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/*
 * Copyright 2015-2016 the original author or authors.
 *
 * 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.
 */

package multibinder;

import java.util.UUID;

import org.hamcrest.CoreMatchers;
import org.hamcrest.Matchers;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.ClassRule;
import org.junit.Test;
import org.junit.runner.RunWith;

import org.springframework.beans.DirectFieldAccessor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.test.SpringApplicationConfiguration;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.cloud.stream.binder.Binder;
import org.springframework.cloud.stream.binder.BinderFactory;
import org.springframework.cloud.stream.binder.ExtendedConsumerProperties;
import org.springframework.cloud.stream.binder.ExtendedProducerProperties;
import org.springframework.cloud.stream.binder.kafka.KafkaConsumerProperties;
import org.springframework.cloud.stream.binder.kafka.KafkaMessageChannelBinder;
import org.springframework.cloud.stream.binder.kafka.KafkaProducerProperties;
import org.springframework.cloud.stream.binder.kafka.config.KafkaBinderConfigurationProperties;
import org.springframework.integration.channel.DirectChannel;
import org.springframework.integration.channel.QueueChannel;
import org.springframework.kafka.test.rule.KafkaEmbedded;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;

import static org.hamcrest.Matchers.arrayWithSize;
import static org.hamcrest.Matchers.equalTo;

@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = MultibinderApplication.class)
@WebAppConfiguration
@DirtiesContext
public class TwoKafkaBindersApplicationTest {

    @ClassRule
    public static KafkaEmbedded kafkaTestSupport1 = new KafkaEmbedded(1);

    @ClassRule
    public static KafkaEmbedded kafkaTestSupport2 = new KafkaEmbedded(1);

    @BeforeClass
    public static void setupEnvironment() {
        System.setProperty("kafkaBroker1", kafkaTestSupport1.getBrokersAsString());
        System.setProperty("zk1", kafkaTestSupport1.getZookeeperConnectionString());
        System.setProperty("kafkaBroker2", kafkaTestSupport2.getBrokersAsString());
        System.setProperty("zk2", kafkaTestSupport2.getZookeeperConnectionString());
    }

    @Autowired
    private BinderFactory<MessageChannel> binderFactory;

    @Test
    public void contextLoads() {
        Binder<MessageChannel, ?, ?> binder1 = binderFactory.getBinder("kafka1");
        KafkaMessageChannelBinder kafka1 = (KafkaMessageChannelBinder) binder1;
        DirectFieldAccessor directFieldAccessor1 = new DirectFieldAccessor(kafka1);
        KafkaBinderConfigurationProperties configuration1 = (KafkaBinderConfigurationProperties) directFieldAccessor1
                .getPropertyValue("configurationProperties");
        Assert.assertThat(configuration1.getBrokers(), arrayWithSize(1));
        Assert.assertThat(configuration1.getBrokers()[0], equalTo(kafkaTestSupport1.getBrokersAsString()));

        Binder<MessageChannel, ?, ?> binder2 = binderFactory.getBinder("kafka2");
        KafkaMessageChannelBinder kafka2 = (KafkaMessageChannelBinder) binder2;
        DirectFieldAccessor directFieldAccessor2 = new DirectFieldAccessor(kafka2);
        KafkaBinderConfigurationProperties configuration2 = (KafkaBinderConfigurationProperties) directFieldAccessor2
                .getPropertyValue("configurationProperties");
        Assert.assertThat(configuration2.getBrokers(), arrayWithSize(1));
        Assert.assertThat(configuration2.getBrokers()[0], equalTo(kafkaTestSupport2.getBrokersAsString()));
    }

    @Test
    public void messagingWorks() {
        DirectChannel dataProducer = new DirectChannel();
        ((KafkaMessageChannelBinder) binderFactory.getBinder("kafka1")).bindProducer("dataIn", dataProducer,
                new ExtendedProducerProperties<>(new KafkaProducerProperties()));

        QueueChannel dataConsumer = new QueueChannel();
        ((KafkaMessageChannelBinder) binderFactory.getBinder("kafka2")).bindConsumer("dataOut",
                UUID.randomUUID().toString(), dataConsumer,
                new ExtendedConsumerProperties<>(new KafkaConsumerProperties()));

        String testPayload = "testFoo" + UUID.randomUUID().toString();
        dataProducer.send(MessageBuilder.withPayload(testPayload).build());

        Message<?> receive = dataConsumer.receive(5000);
        Assert.assertThat(receive, Matchers.notNullValue());
        Assert.assertThat(receive.getPayload(), CoreMatchers.equalTo(testPayload));
    }

}