BAEL-3091: The Prototype Pattern in Java (changed code based on valid comments from a reader)

spring-vertx/src/main/java/com/baeldung/vertxspring/VertxSpringApplication.java

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+package com.baeldung.vertxspring;
+
+import javax.annotation.PostConstruct;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.domain.EntityScan;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+
+import com.baeldung.vertxspring.verticles.ServerVerticle;
+import com.baeldung.vertxspring.verticles.ArticleRecipientVerticle;
+
+import io.vertx.core.Vertx;
+
+@SpringBootApplication
+@Configuration
+@EnableJpaRepositories("com.baeldung.vertxspring.repository")
+@EntityScan("com.baeldung.vertxspring.entity")
+@ComponentScan(basePackages = { "com.baeldung" })
+public class VertxSpringApplication {
+
+    @Autowired
+    private ServerVerticle serverVerticle;
+
+    @Autowired
+    private ArticleRecipientVerticle serviceVerticle;
+
+    public static void main(String[] args) {
+        SpringApplication.run(VertxSpringApplication.class, args);
+    }
+
+    @PostConstruct
+    public void deployVerticle() {
+        final Vertx vertx = Vertx.vertx();
+        vertx.deployVerticle(serverVerticle);
+        vertx.deployVerticle(serviceVerticle);
+    }
+}

spring-vertx/src/main/java/com/baeldung/vertxspring/entity/Article.java

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+package com.baeldung.vertxspring.entity;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+
+import org.springframework.data.annotation.PersistenceConstructor;
+
+@Entity
+public class Article {
+
+    @Id
+    private Long id;
+    private String article;
+
+    private Article() {
+    }
+
+    @PersistenceConstructor
+    public Article(Long id, String article) {
+        super();
+        this.id = id;
+        this.article = article;
+    }
+
+    @Override
+    public String toString() {
+        return "Article [id=" + id + ", article=" + article + "]";
+    }
+
+    public Long getArticleId() {
+        return id;
+    }
+
+    public void setArticleId(Long id) {
+        this.id = id;
+    }
+
+    public String getArticle() {
+        return article;
+    }
+
+    public void setArticle(String article) {
+        this.article = article;
+    }
+
+}

spring-vertx/src/main/java/com/baeldung/vertxspring/repository/ArticleRepository.java

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+package com.baeldung.vertxspring.repository;
+
+import com.baeldung.vertxspring.entity.Article;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface ArticleRepository extends JpaRepository<Article, Long> {
+}

spring-vertx/src/main/java/com/baeldung/vertxspring/service/ArticleService.java

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+package com.baeldung.vertxspring.service;
+
+import com.baeldung.vertxspring.entity.Article;
+import com.baeldung.vertxspring.repository.ArticleRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class ArticleService {
+
+    @Autowired
+    private ArticleRepository articleRepository;
+
+    public List<Article> getAllArticle() {
+        return articleRepository.findAll();
+    }
+
+}

spring-vertx/src/main/java/com/baeldung/vertxspring/util/DbBootstrap.java

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+package com.baeldung.vertxspring.util;
+
+import java.util.Random;
+import java.util.UUID;
+import java.util.stream.IntStream;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.stereotype.Component;
+
+import com.baeldung.vertxspring.entity.Article;
+import com.baeldung.vertxspring.repository.ArticleRepository;
+
+@Component
+public class DbBootstrap implements CommandLineRunner {
+
+    @Autowired
+    private ArticleRepository articleRepository;
+
+    @Override
+    public void run(String... arg0) throws Exception {
+
+        IntStream.range(0, 10)
+          .forEach(count -> this.articleRepository.save(new Article(new Random().nextLong(), UUID.randomUUID()
+          .toString())));
+
+    }
+}

spring-vertx/src/main/java/com/baeldung/vertxspring/verticles/ArticleRecipientVerticle.java

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+package com.baeldung.vertxspring.verticles;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import com.baeldung.vertxspring.service.ArticleService;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import io.vertx.core.AbstractVerticle;
+import io.vertx.core.Handler;
+import io.vertx.core.eventbus.Message;
+import io.vertx.core.json.Json;
+
+@Component
+public class ArticleRecipientVerticle extends AbstractVerticle {
+
+    public static final String GET_ALL_ARTICLES = "get.articles.all";
+
+    private final ObjectMapper mapper = Json.mapper;
+
+    @Autowired
+    private ArticleService articleService;
+
+    @Override
+    public void start() throws Exception {
+        super.start();
+        vertx.eventBus()
+                .<String>consumer(GET_ALL_ARTICLES)
+                .handler(getAllArticleService(articleService));
+    }
+
+    private Handler<Message<String>> getAllArticleService(ArticleService service) {
+        return msg -> vertx.<String>executeBlocking(future -> {
+            try {
+                future.complete(mapper.writeValueAsString(service.getAllArticle()));
+            } catch (JsonProcessingException e) {
+                System.out.println("Failed to serialize result");
+                future.fail(e);
+            }
+        }, result -> {
+            if (result.succeeded()) {
+                msg.reply(result.result());
+            } else {
+                msg.reply(result.cause()
+                        .toString());
+            }
+        });
+    }
+}

spring-vertx/src/main/java/com/baeldung/vertxspring/verticles/ServerVerticle.java

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+package com.baeldung.vertxspring.verticles;
+
+import org.springframework.stereotype.Component;
+
+import io.vertx.core.AbstractVerticle;
+import io.vertx.ext.web.Router;
+import io.vertx.ext.web.RoutingContext;
+
+@Component
+public class ServerVerticle extends AbstractVerticle {
+
+    private void getAllArticlesHandler(RoutingContext routingContext) {
+        vertx.eventBus()
+            .<String>send(ArticleRecipientVerticle.GET_ALL_ARTICLES, "", result -> {
+                if (result.succeeded()) {
+                    routingContext.response()
+                        .putHeader("content-type", "application/json")
+                        .setStatusCode(200)
+                        .end(result.result()
+                        .body());
+                } else {
+                    routingContext.response()
+                        .setStatusCode(500)
+                        .end();
+                }
+            });
+    }
+
+    @Override
+    public void start() throws Exception {
+        super.start();
+
+        Router router = Router.router(vertx);
+        router.get("/api/baeldung/articles")
+            .handler(this::getAllArticlesHandler);
+
+        vertx.createHttpServer()
+            .requestHandler(router::accept)
+            .listen(config().getInteger("http.port", 8080));
+    }
+
+}

spring-vertx/src/main/resources/conf/conf.json

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+{
+ "http.port":8080	
+}

spring-vertx/src/main/resources/logback.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

spring-vertx/src/test/java/com/baeldung/vertxspring/VertxSpringApplicationIntegrationTest.java

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+package com.baeldung.vertxspring;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.http.ResponseEntity;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringBootTest
+public class VertxSpringApplicationIntegrationTest {
+
+    private TestRestTemplate restTemplate = new TestRestTemplate();
+
+    @Test
+    public void givenUrl_whenReceivedArticles_thenSuccess() throws InterruptedException {
+        ResponseEntity<String> responseEntity = restTemplate.getForEntity("http://localhost:8080/api/baeldung/articles", String.class);
+
+        assertEquals(200, responseEntity.getStatusCodeValue());
+    }
+
+}
+
+

spring-vertx/src/test/java/org/baeldung/SpringContextIntegrationTest.java

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+package org.baeldung;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.vertxspring.VertxSpringApplication;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = VertxSpringApplication.class)
+public class SpringContextIntegrationTest {
+
+    @Test
+    public void whenSpringContextIsBootstrapped_thenNoExceptions() {
+    }
+}

spring-vertx/src/test/java/org/baeldung/SpringContextTest.java

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+package org.baeldung;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.vertxspring.VertxSpringApplication;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = VertxSpringApplication.class)
+public class SpringContextTest {
+
+    @Test
+    public void whenSpringContextIsBootstrapped_thenNoExceptions() {
+    }
+}