Add smoke tests for data-jdbc.

data/data-jdbc/README.adoc

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+Tests if Spring Data JDBC with HikariCP is working.

data/data-jdbc/build.gradle

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+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-data-jdbc")
+
+	implementation("org.crac:crac:$cracVersion")
+	implementation(project(":cr-listener"))
+
+	runtimeOnly("org.postgresql:postgresql")
+
+	testImplementation("org.springframework.boot:spring-boot-starter-test")
+
+	appTestImplementation(project(":cr-smoke-test-support"))
+	appTestImplementation("org.awaitility:awaitility:4.2.0")
+}
+
+crSmokeTest {
+	webApplication = false
+}

data/data-jdbc/docker-compose.yml

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+services:
+  postgres:
+    image: 'postgres:14'
+    environment:
+      - 'POSTGRES_PASSWORD=password'
+    ports:
+      - '5432'

data/data-jdbc/src/appTest/java/com/example/data/jdbc/DataJdbcApplicationTests.java

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+/*
+ * 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.data.jdbc;
+
+import static org.assertj.core.api.Assertions.*;
+
+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;
+
+@ApplicationTest
+public class DataJdbcApplicationTests {
+
+	@Test
+	void connectionTest(AssertableOutput output) {
+		Awaitility.await().atMost(Duration.ofSeconds(10)).untilAsserted(() -> {
+			assertThat(output).hasLineMatching("Starting DataReader: was (INITIALIZED|STOPPED)");
+			assertThat(output).hasLineMatching("count \\d+: Author\\{id=\\d, name='.*'}");
+		});
+	}
+
+}

data/data-jdbc/src/main/java/com/example/data/jdbc/Author.java

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+/*
+ * 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.data.jdbc;
+
+import org.springframework.data.annotation.Id;
+
+public class Author {
+
+	@Id
+	private final Long id;
+
+	private final String name;
+
+	public Author(Long id, String name) {
+		this.id = id;
+		this.name = name;
+	}
+
+	public Long getId() {
+		return id;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	@Override
+	public String toString() {
+		return "Author{" + "id=" + id + ", name='" + name + '\'' + '}';
+	}
+
+}

data/data-jdbc/src/main/java/com/example/data/jdbc/AuthorRepository.java

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+/*
+ * 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.data.jdbc;
+
+import org.springframework.data.repository.ListCrudRepository;
+
+public interface AuthorRepository extends ListCrudRepository<Author, Long> {
+
+}

data/data-jdbc/src/main/java/com/example/data/jdbc/DataJdbcApplication.java

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+/*
+ * 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.data.jdbc;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class DataJdbcApplication {
+
+	public static void main(String[] args) throws InterruptedException {
+		SpringApplication.run(DataJdbcApplication.class, args);
+	}
+
+}

data/data-jdbc/src/main/java/com/example/data/jdbc/DataReader.java

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+/*
+ * 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.data.jdbc;
+
+import java.util.List;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.stream.Collectors;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.SmartLifecycle;
+import org.springframework.scheduling.annotation.EnableScheduling;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+import org.springframework.util.ObjectUtils;
+
+@Component
+@EnableScheduling
+class DataReader implements SmartLifecycle {
+
+	private final Object lifecycleMonitor = new Object();
+
+	private final AtomicInteger counter = new AtomicInteger(0);
+
+	private State state = State.INITIALIZED;
+
+	private List<Long> authorIds;
+
+	@Autowired
+	private AuthorRepository authorRepository;
+
+	enum State {
+
+		INITIALIZED, STARTED, STOPPED
+
+	}
+
+	@Override
+	public void start() {
+
+		synchronized (lifecycleMonitor) {
+			switch (state) {
+				case INITIALIZED, STOPPED -> {
+					System.out.printf("Starting DataReader: was %s\n", state);
+					if (ObjectUtils.isEmpty(authorIds)) {
+						authorIds = insertAuthors().stream().map(Author::getId).collect(Collectors.toList());
+					}
+					state = State.STARTED;
+				}
+			}
+		}
+	}
+
+	@Scheduled(fixedDelay = 1000)
+	public void scheduled() {
+
+		if (isRunning()) {
+
+			int count = counter.incrementAndGet();
+			Author author = authorRepository.findById(authorIds.get(count % 3)).orElse(null);
+			System.out.printf("count %03d: %s\n", count, author);
+		}
+	}
+
+	@Override
+	public void stop() {
+
+		synchronized (lifecycleMonitor) {
+			switch (state) {
+				case INITIALIZED, STARTED -> {
+					System.out.printf("Stopping DataReader: was %s\n", state);
+					state = State.STOPPED;
+				}
+			}
+		}
+	}
+
+	@Override
+	public boolean isRunning() {
+		synchronized (lifecycleMonitor) {
+			return State.STARTED.equals(state);
+		}
+	}
+
+	private List<Author> insertAuthors() {
+
+		return authorRepository.saveAll(List.of(new Author(null, "Brandon Sanderson"), //
+				new Author(null, "Brent Weeks"), //
+				new Author(null, "Peter V. Brett")));
+	}
+
+}

data/data-jdbc/src/main/resources/application.properties

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+spring.sql.init.mode=always
+spring.datasource.url=jdbc:postgresql://${POSTGRES_HOST:localhost}:${POSTGRES_PORT_5432:5432}/postgres
+spring.datasource.username=postgres
+spring.datasource.password=password
+spring.datasource.hikari.allow-pool-suspension=true

data/data-jdbc/src/main/resources/schema.sql

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+create table author
+(
+    id   integer PRIMARY KEY GENERATED BY DEFAULT AS IDENTITY,
+    name varchar NOT NULL
+);