Update README.md

spring-reactor/README.md

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+## Spring Reactor
+
+This module contains articles about Spring Reactor
+
+## Relevant articles:
+
+- [Introduction to Spring Reactor](https://www.baeldung.com/spring-reactor)

spring-reactor/pom.xml

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+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.baeldung</groupId>
+    <artifactId>spring-reactor</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <name>spring-reactor</name>
+    <packaging>jar</packaging>
+    <url>http://maven.apache.org</url>
+
+    <parent>
+        <artifactId>parent-boot-2</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-boot-2</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor</groupId>
+            <artifactId>reactor-bus</artifactId>
+            <version>${reactor.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor</groupId>
+            <artifactId>reactor-core</artifactId>
+            <version>${reactor.version}</version>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <spring-cloud-sleuth.version>2.0.2.RELEASE</spring-cloud-sleuth.version>
+        <reactor.version>2.0.8.RELEASE</reactor.version>
+    </properties>
+</project>

spring-reactor/src/main/java/com/baeldung/Application.java

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+package com.baeldung;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+import com.baeldung.consumer.NotificationConsumer;
+
+import reactor.bus.EventBus;
+
+import static reactor.bus.selector.Selectors.$;
+
+@Configuration
+@EnableAutoConfiguration
+@ComponentScan
+@Import(Config.class)
+public class Application implements CommandLineRunner {
+
+    @Autowired
+    private EventBus eventBus;
+
+    @Autowired
+    private NotificationConsumer notificationConsumer;
+
+    @Override
+    public void run(String... args) throws Exception {
+        eventBus.on($("notificationConsumer"), notificationConsumer);
+    }
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+
+}

spring-reactor/src/main/java/com/baeldung/Config.java

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+package com.baeldung;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import reactor.Environment;
+import reactor.bus.EventBus;
+
+@Configuration
+public class Config {
+
+    @Bean
+    Environment env() {
+        return Environment.initializeIfEmpty().assignErrorJournal();
+    }
+
+    @Bean
+    EventBus createEventBus(Environment env) {
+        return EventBus.create(env, Environment.THREAD_POOL);
+    }
+    
+}

spring-reactor/src/main/java/com/baeldung/consumer/NotificationConsumer.java

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+package com.baeldung.consumer;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import com.baeldung.doman.NotificationData;
+import com.baeldung.service.NotificationService;
+
+import reactor.bus.Event;
+import reactor.fn.Consumer;
+
+@Service
+public class NotificationConsumer implements Consumer<Event<NotificationData>> {
+
+    @Autowired
+    private NotificationService notificationService;
+
+    @Override
+    public void accept(Event<NotificationData> notificationDataEvent) {
+
+        NotificationData notificationData = notificationDataEvent.getData();
+        try {
+            notificationService.initiateNotification(notificationData);
+        } catch (InterruptedException e) {
+        }
+
+    }
+
+}

spring-reactor/src/main/java/com/baeldung/controller/NotificationController.java

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+package com.baeldung.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.baeldung.doman.NotificationData;
+
+import reactor.bus.Event;
+import reactor.bus.EventBus;
+
+@RestController
+public class NotificationController {
+
+    @Autowired
+    private EventBus eventBus;
+
+    @GetMapping("/startNotification/{param}")
+    public void startNotification(@PathVariable Integer param) {
+
+        for (int i = 0; i < param; i++) {
+
+            NotificationData data = new NotificationData();
+            data.setId(i);
+
+            eventBus.notify("notificationConsumer", Event.wrap(data));
+
+            System.out.println("Notification " + i + ": notification task submitted successfully");
+        }
+
+    }
+
+}

spring-reactor/src/main/java/com/baeldung/doman/NotificationData.java

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+package com.baeldung.doman;
+
+public class NotificationData {
+
+    private long id;
+    private String name;
+    private String email;
+    private String mobile;
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getMobile() {
+        return mobile;
+    }
+
+    public void setMobile(String mobile) {
+        this.mobile = mobile;
+    }
+
+}

spring-reactor/src/main/java/com/baeldung/service/NotificationService.java

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+package com.baeldung.service;
+
+import com.baeldung.doman.NotificationData;
+
+public interface NotificationService {
+
+    void initiateNotification(NotificationData notificationData) throws InterruptedException;
+
+}

spring-reactor/src/main/java/com/baeldung/service/impl/NotificationServiceimpl.java

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+package com.baeldung.service.impl;
+
+import org.springframework.stereotype.Service;
+
+import com.baeldung.doman.NotificationData;
+import com.baeldung.service.NotificationService;
+
+@Service
+public class NotificationServiceimpl implements NotificationService {
+
+    @Override
+    public void initiateNotification(NotificationData notificationData) throws InterruptedException {
+
+        System.out.println("Notification service started for Notification ID: " + notificationData.getId());
+
+        Thread.sleep(5000);
+
+        System.out.println("Notification service ended for Notification ID: " + notificationData.getId());
+    }
+
+}

spring-reactor/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-reactor/src/test/java/com/baeldung/DataLoaderLiveTest.java

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+package com.baeldung;
+
+import org.junit.Test;
+import org.springframework.web.client.RestTemplate;
+
+public class DataLoaderLiveTest {
+
+    @Test
+    public void exampleTest() {
+        RestTemplate restTemplate = new RestTemplate();
+        restTemplate.getForObject("http://localhost:8080/startNotification/10", String.class);
+    }
+
+}

spring-reactor/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.Application;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = Application.class)
+public class SpringContextIntegrationTest {
+
+    @Test
+    public void whenSpringContextIsBootstrapped_thenNoExceptions() {
+    }
+}

spring-reactor/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.Application;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = Application.class)
+public class SpringContextTest {
+
+    @Test
+    public void whenSpringContextIsBootstrapped_thenNoExceptions() {
+    }
+}