Add smoke test for Spring RabbitMQ

- Change the AmqpRabbitApplication implementation to align the RabbitTemplate with SmartLifecycle.
 - Add reminder to update the spring-rabbit version to 3.0.8+.

.gitignore

@@ -9,3 +9,4 @@ out/
 ci/pipeline.yml
 stats-restore
 .vscode/
+.DS_Store

integration/spring-amqp-rabbit/README.adoc

@@ -0,0 +1 @@
+Tests if Spring AMQP with RabbitMQ is working.

integration/spring-amqp-rabbit/build.gradle

@@ -0,0 +1,21 @@
+plugins {
+	id "java"
+	id "org.springframework.boot"
+	id "org.springframework.cr.smoke-test"
+}
+
+dependencies {
+	implementation(platform(org.springframework.boot.gradle.plugin.SpringBootPlugin.BOM_COORDINATES))
+	implementation("org.springframework.boot:spring-boot-starter-amqp")
+
+	// TODO: update to non snapshot spring-rabbit 3.0.8+ version when available.
+	implementation("org.springframework.amqp:spring-rabbit:3.0.8-SNAPSHOT")
+
+	implementation("org.crac:crac:$cracVersion")
+	implementation(project(":cr-listener"))
+
+	testImplementation("org.springframework.boot:spring-boot-starter-test")
+
+	appTestImplementation(project(":cr-smoke-test-support"))
+	appTestImplementation("org.awaitility:awaitility:4.2.0")
+}

integration/spring-amqp-rabbit/docker-compose.yml

@@ -0,0 +1,7 @@
+version: '3'
+services:
+  rabbitmq:
+    image: 'rabbitmq:management'
+    ports:
+      - '5672'
+      - '15672'

integration/spring-amqp-rabbit/src/appTest/java/com/example/amqp/AmqpRabbitApplicationCrTests.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2023 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
+ *
+ *      https://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 com.example.amqp;
+
+import java.time.Duration;
+
+import org.awaitility.Awaitility;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.cr.smoketest.support.assertj.AssertableOutput;
+import org.springframework.cr.smoketest.support.junit.ApplicationTest;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ApplicationTest
+class AmqpRabbitApplicationCrTests {
+
+	@Test
+	void rabbitListenerMethodReceivesMessageAndSendsResponse(AssertableOutput output) {
+		Awaitility.await()
+			.atMost(Duration.ofSeconds(60))
+			.untilAsserted(() -> assertThat(output).hasLineContaining("++++++ Received: ONEtwo"));
+	}
+
+}

integration/spring-amqp-rabbit/src/main/java/com/example/amqp/AmqpRabbitApplication.java

@@ -0,0 +1,106 @@
+/*
+ * Copyright 2023 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
+ *
+ *      https://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 com.example.amqp;
+
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import org.springframework.amqp.AmqpRejectAndDontRequeueException;
+import org.springframework.amqp.core.Queue;
+import org.springframework.amqp.rabbit.annotation.RabbitListener;
+import org.springframework.amqp.rabbit.connection.CorrelationData;
+import org.springframework.amqp.rabbit.core.RabbitTemplate;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.SmartLifecycle;
+import org.springframework.context.annotation.Bean;
+import org.springframework.messaging.handler.annotation.SendTo;
+import org.springframework.scheduling.annotation.EnableScheduling;
+import org.springframework.scheduling.annotation.Scheduled;
+
+@SpringBootApplication
+@EnableScheduling
+public class AmqpRabbitApplication implements SmartLifecycle {
+
+	public static void main(String[] args) throws Exception {
+		SpringApplication.run(AmqpRabbitApplication.class, args);
+	}
+
+	@Autowired
+	RabbitTemplate template;
+
+	@RabbitListener(id = "cf1", queues = "cf1")
+	@SendTo
+	public String upperCaseIt(String in) {
+		try {
+			String two = sendWithConfirms();
+			return in.toUpperCase() + two;
+		}
+		catch (Exception e) {
+			throw new AmqpRejectAndDontRequeueException("fail");
+		}
+	}
+
+	@RabbitListener(id = "cf2", queues = "cf2")
+	@SendTo
+	public String lowerCaseIt(String in) {
+		return in.toLowerCase();
+	}
+
+	private String sendWithConfirms() throws Exception {
+		CorrelationData data = new CorrelationData();
+		String result = (String) this.template.convertSendAndReceive("", "cf2", "TWO", data);
+		data.getFuture().get(10, TimeUnit.SECONDS);
+		return result;
+	}
+
+	@Bean
+	public Queue queue1() {
+		return new Queue("cf1");
+	}
+
+	@Bean
+	public Queue queue2() {
+		return new Queue("cf2");
+	}
+
+	@Scheduled(fixedDelay = 1, timeUnit = TimeUnit.SECONDS)
+	public void doSendMessage() {
+		if (this.isRunning.get()) {
+			System.out.println("++++++ Received: " + template.convertSendAndReceive("", "cf1", "one"));
+		}
+	}
+
+	// Use the SmartLifecycle to synch the message sending with the checkpoint/restore.
+	private AtomicBoolean isRunning = new AtomicBoolean(false);
+
+	@Override
+	public void start() {
+		this.isRunning.set(true);
+	}
+
+	@Override
+	public void stop() {
+		this.isRunning.set(false);
+	}
+
+	@Override
+	public boolean isRunning() {
+		return this.isRunning.get();
+	}
+
+}

integration/spring-amqp-rabbit/src/main/resources/application.properties

@@ -0,0 +1,3 @@
+spring.rabbitmq.host=${RABBITMQ_HOST:localhost}
+spring.rabbitmq.port=${RABBITMQ_PORT_5672:5672}
+spring.rabbitmq.publisher-confirm-type=correlated