Move samples from spring-cloud-stream

multibinder-differentsystems/src/test/java/multibinder/TwoKafkaBindersApplicationTest.java

@@ -0,0 +1,110 @@
+/*
+ * 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 static org.hamcrest.Matchers.contains;
+import static org.hamcrest.Matchers.hasSize;
+
+import java.util.List;
+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.test.SpringApplicationConfiguration;
+import org.springframework.cloud.stream.binder.BinderFactory;
+import org.springframework.cloud.stream.binder.kafka.KafkaMessageChannelBinder;
+import org.springframework.cloud.stream.test.junit.kafka.KafkaTestSupport;
+import org.springframework.cloud.stream.test.junit.redis.RedisTestSupport;
+import org.springframework.integration.channel.DirectChannel;
+import org.springframework.integration.channel.QueueChannel;
+import org.springframework.integration.kafka.core.BrokerAddress;
+import org.springframework.integration.kafka.core.Configuration;
+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;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringApplicationConfiguration(classes = MultibinderApplication.class)
+@WebAppConfiguration
+@DirtiesContext
+public class TwoKafkaBindersApplicationTest {
+
+	@ClassRule
+	public static KafkaTestSupport kafkaTestSupport1 = new KafkaTestSupport(true);
+
+	@ClassRule
+	public static KafkaTestSupport kafkaTestSupport2 = new KafkaTestSupport(true);
+
+	@ClassRule
+	public static RedisTestSupport redisTestSupport = new RedisTestSupport();
+
+	@BeforeClass
+	public static void setupEnvironment() {
+		System.setProperty("kafkaBroker1", kafkaTestSupport1.getBrokerAddress());
+		System.setProperty("zk1", kafkaTestSupport1.getZkConnectString());
+		System.setProperty("kafkaBroker2", kafkaTestSupport2.getBrokerAddress());
+		System.setProperty("zk2", kafkaTestSupport2.getZkConnectString());
+	}
+
+	@Autowired
+	private BinderFactory<MessageChannel> binderFactory;
+
+	@Test
+	public void contextLoads() {
+		KafkaMessageChannelBinder kafka1 = (KafkaMessageChannelBinder) binderFactory.getBinder("kafka1");
+		DirectFieldAccessor directFieldAccessor = new DirectFieldAccessor(kafka1.getConnectionFactory());
+		Configuration configuration = (Configuration) directFieldAccessor.getPropertyValue("configuration");
+		List<BrokerAddress> brokerAddresses = configuration.getBrokerAddresses();
+		Assert.assertThat(brokerAddresses, hasSize(1));
+		Assert.assertThat(brokerAddresses, contains(BrokerAddress.fromAddress(kafkaTestSupport1.getBrokerAddress())));
+		KafkaMessageChannelBinder kafka2 = (KafkaMessageChannelBinder) binderFactory.getBinder("kafka2");
+		DirectFieldAccessor directFieldAccessor2 = new DirectFieldAccessor(kafka2.getConnectionFactory());
+		Configuration configuration2 = (Configuration) directFieldAccessor2.getPropertyValue("configuration");
+		List<BrokerAddress> brokerAddresses2 = configuration2.getBrokerAddresses();
+		Assert.assertThat(brokerAddresses2, hasSize(1));
+		Assert.assertThat(brokerAddresses2, contains(BrokerAddress.fromAddress(kafkaTestSupport2.getBrokerAddress())));
+	}
+
+	@Test
+	public void messagingWorks() {
+		DirectChannel dataProducer = new DirectChannel();
+		binderFactory.getBinder("kafka1").bindProducer("dataIn", dataProducer, null);
+
+		QueueChannel dataConsumer = new QueueChannel();
+		binderFactory.getBinder("kafka2").bindConsumer("dataOut", UUID.randomUUID().toString(),
+				dataConsumer, null);
+
+		String testPayload = "testFoo" + UUID.randomUUID().toString();
+		dataProducer.send(MessageBuilder.withPayload(testPayload).build());
+
+		Message<?> receive = dataConsumer.receive(2000);
+		Assert.assertThat(receive, Matchers.notNullValue());
+		Assert.assertThat(receive.getPayload(), CoreMatchers.equalTo(testPayload));
+	}
+
+}