add formula source (#14)

rabbitmq-custom-formula-source/pom.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>3.3.0</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>com.example</groupId>
+	<artifactId>messaging-rabbitmq-source</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>messaging-rabbitmq-source</name>
+	<description>Source project for rabbitmq</description>
+	<properties>
+		<java.version>17</java.version>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-amqp</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<scope>provided</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<version>1.18.24</version>
+			<scope>provided</scope>
+		</dependency>
+
+    <dependency>
+        <groupId>com.fasterxml.jackson.core</groupId>
+        <artifactId>jackson-databind</artifactId>
+    </dependency>
+ </dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

rabbitmq-custom-formula-source/src/main/java/com/example/messagingrabbitmq/MessagingRabbitmqApplication.java

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+package com.example.messagingrabbitmq;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.amqp.core.Queue;
+
+@SpringBootApplication
+public class MessagingRabbitmqApplication {
+
+    static final String queueName = "queue";
+
+    public static void main(String[] args) throws InterruptedException {
+        ConfigurableApplicationContext applicationContext = SpringApplication.run(MessagingRabbitmqApplication.class);
+        Producer producer = applicationContext.getBean(Producer.class);
+        producer.run();
+    }
+
+    @Bean
+    public Queue queue() {
+        return new Queue(queueName, true);
+    }
+
+}

rabbitmq-custom-formula-source/src/main/java/com/example/messagingrabbitmq/Producer.java

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+package com.example.messagingrabbitmq;
+
+import org.springframework.amqp.core.Message;
+import org.springframework.stereotype.Component;
+import org.springframework.amqp.rabbit.core.RabbitTemplate;
+import org.springframework.beans.factory.annotation.Autowired;
+
+@Component
+public class Producer {
+
+    @Autowired
+    private final RabbitTemplate rabbitTemplate;
+
+    public Producer(RabbitTemplate rabbitTemplate) {
+        this.rabbitTemplate = rabbitTemplate;
+    }
+
+    public void run()  {
+        for (int i = 0; i < 10; i++) {
+            System.out.println("Sending message..." + i);
+            String responseString = "test " + i;
+            rabbitTemplate.convertAndSend(MessagingRabbitmqApplication.queueName, new Message(responseString.getBytes()));
+        }
+    }
+}

rabbitmq-custom-formula-source/src/main/resources/application.properties

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+spring.rabbitmq.password=secret
+spring.rabbitmq.username=myuser
+spring.rabbitmq.host=localhost
+spring.rabbitmq.port=5671