Separate into files, prepare for Prometheus&Grafana

SymphonyManager/Dockerfile

@@ -1,7 +1,7 @@
 FROM ubuntu:latest
 LABEL authors="lumijiez"
 
-FROM maven:3.9.8-eclipse-temurin-21 AS build
+FROM maven:3.9.9-eclipse-temurin-21 AS build
 
 WORKDIR /app
 

SymphonyManager/pom.xml

@@ -10,6 +10,41 @@
     <packaging>jar</packaging>
 
     <dependencies>
+        <dependency>
+            <groupId>com.rabbitmq</groupId>
+            <artifactId>amqp-client</artifactId>
+            <version>5.23.0</version>
+        </dependency>
+
+        <dependency>
+            <groupId>com.google.code.gson</groupId>
+            <artifactId>gson</artifactId>
+            <version>2.11.0</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+            <version>1.7.32</version>
+        </dependency>
+
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <version>1.5.12</version>
+        </dependency>
+
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-core</artifactId>
+            <version>1.5.12</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-simple</artifactId>
+            <version>1.7.32</version>
+        </dependency>
     </dependencies>
 
     <build>
@@ -24,6 +59,20 @@
                 </configuration>
             </plugin>
 
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>3.2.1</version>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
@@ -38,5 +87,4 @@
             </plugin>
         </plugins>
     </build>
-
 </project>

SymphonyManager/src/main/java/io/github/lumijiez/BrokerConnector.java

@@ -0,0 +1,53 @@
+package io.github.lumijiez;
+
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+import com.rabbitmq.client.DeliverCallback;
+
+import java.nio.charset.StandardCharsets;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
+public class BrokerConnector {
+    private static final String QUEUE_NAME = "random_json_queue";
+    private static final String RABBITMQ_HOST = "rabbitmq";
+    private static final String RABBITMQ_USER = "symphony";
+    private static final String RABBITMQ_PASSWORD = "symphony";
+
+    public static void connect() {
+        ScheduledExecutorService reconnectExecutor = Executors.newSingleThreadScheduledExecutor();
+
+        reconnectExecutor.scheduleWithFixedDelay(() -> {
+            try {
+                connectToRabbitMQ();
+            } catch (Exception e) {
+                System.err.println("Awaiting broker connection: " + e.getMessage());
+            }
+        }, 0, 5, TimeUnit.SECONDS);
+    }
+
+    private static void connectToRabbitMQ() throws Exception {
+        ConnectionFactory factory = new ConnectionFactory();
+        factory.setHost(RABBITMQ_HOST);
+        factory.setUsername(RABBITMQ_USER);
+        factory.setPassword(RABBITMQ_PASSWORD);
+
+        try (Connection connection = factory.newConnection();
+             Channel channel = connection.createChannel()) {
+
+            channel.queueDeclare(QUEUE_NAME, false, false, false, null);
+            System.out.println("Waiting for messages. To exit press CTRL+C");
+
+            DeliverCallback deliverCallback = (consumerTag, delivery) -> {
+                String message = new String(delivery.getBody(), StandardCharsets.UTF_8);
+                System.out.println("Received: " + message);
+            };
+
+            channel.basicConsume(QUEUE_NAME, true, deliverCallback, consumerTag -> {});
+
+            Thread.currentThread().join();
+        }
+    }
+}

SymphonyManager/src/main/java/io/github/lumijiez/Main.java

@@ -1,7 +1,8 @@
 package io.github.lumijiez;
 
 public class Main {
+
     public static void main(String[] args) {
-        System.out.print("Manager started!");
+        BrokerConnector.connect();
     }
 }

SymphonyProducer/pom.xml

@@ -39,6 +39,12 @@
             <artifactId>logback-core</artifactId>
             <version>1.5.12</version>
         </dependency>
+
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-simple</artifactId>
+            <version>1.7.32</version>
+        </dependency>
     </dependencies>
 
     <build>

SymphonyProducer/src/main/java/io/github/lumijiez/BrokerConnector.java

@@ -0,0 +1,83 @@
+package io.github.lumijiez;
+
+import com.google.gson.JsonObject;
+import com.google.gson.JsonPrimitive;
+import com.rabbitmq.client.Channel;
+import com.rabbitmq.client.Connection;
+import com.rabbitmq.client.ConnectionFactory;
+
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.util.Random;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
+public class BrokerConnector {
+    private static final String QUEUE_NAME = "random_json_queue";
+    private static final String RABBITMQ_HOST = "rabbitmq";
+    private static final String RABBITMQ_USER = "symphony";
+    private static final String RABBITMQ_PASSWORD = "symphony";
+
+    public static void connect() {
+        CountDownLatch latch = new CountDownLatch(1);
+
+        Runtime.getRuntime().addShutdownHook(new Thread(() -> {
+            System.out.println("Shutdown signal received.");
+            latch.countDown();
+        }));
+
+        boolean success = connectToRabbitMQ(latch);
+        System.out.println("Success: " + success);
+    }
+
+    private static boolean connectToRabbitMQ(CountDownLatch latch) {
+        ConnectionFactory factory = new ConnectionFactory();
+        factory.setHost(RABBITMQ_HOST);
+        factory.setUsername(RABBITMQ_USER);
+        factory.setPassword(RABBITMQ_PASSWORD);
+
+        try (Connection connection = factory.newConnection();
+             Channel channel = connection.createChannel();
+             ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor()) {
+
+            channel.queueDeclare(QUEUE_NAME, false, false, false, null);
+            System.out.println("Connected to RabbitMQ and queue declared.");
+
+            scheduler.scheduleAtFixedRate(() -> {
+                try {
+                    String jsonMessage = generateRandomJson();
+                    channel.basicPublish("", QUEUE_NAME, null, jsonMessage.getBytes(StandardCharsets.UTF_8));
+                    System.out.println("Sent: " + jsonMessage);
+                } catch (IOException e) {
+                    System.err.println("Failed to send message: " + e.getMessage());
+                }
+            }, 0, 10, TimeUnit.SECONDS);
+
+            latch.await();
+            scheduler.shutdown();
+
+            return scheduler.awaitTermination(5, TimeUnit.SECONDS);
+        } catch (Exception e) {
+            System.err.println("Awaiting broker connection: " + e.getMessage());
+            try {
+                Thread.sleep(5000);
+                connectToRabbitMQ(latch);
+            } catch (InterruptedException ie) {
+                Thread.currentThread().interrupt();
+            }
+        }
+        return false;
+    }
+
+    private static String generateRandomJson() {
+        Random random = new Random();
+        JsonObject jsonObject = new JsonObject();
+        jsonObject.add("id", new JsonPrimitive(random.nextInt(1000)));
+        jsonObject.add("name", new JsonPrimitive("Item_" + random.nextInt(100)));
+        jsonObject.add("value", new JsonPrimitive(random.nextDouble() * 100));
+
+        return jsonObject.toString();
+    }
+}

SymphonyProducer/src/main/java/io/github/lumijiez/Main.java

@@ -1,82 +1,8 @@
 package io.github.lumijiez;
 
-import com.google.gson.JsonObject;
-import com.google.gson.JsonPrimitive;
-import com.rabbitmq.client.Channel;
-import com.rabbitmq.client.Connection;
-import com.rabbitmq.client.ConnectionFactory;
-
-import java.io.IOException;
-import java.nio.charset.StandardCharsets;
-import java.util.Random;
-import java.util.concurrent.Executors;
-import java.util.concurrent.ScheduledExecutorService;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.CountDownLatch;
-
 public class Main {
-    private static final String QUEUE_NAME = "random_json_queue";
-    private static final String RABBITMQ_HOST = "rabbitmq";
-    private static final String RABBITMQ_USER = "symphony";
-    private static final String RABBITMQ_PASSWORD = "symphony";
 
     public static void main(String[] args) {
-        CountDownLatch latch = new CountDownLatch(1);
+        BrokerConnector.connect();
-
-        Runtime.getRuntime().addShutdownHook(new Thread(() -> {
-            System.out.println("Shutdown signal received.");
-            latch.countDown();
-        }));
-
-        boolean success = connectToRabbitMQ(latch);
-    }
-
-    private static boolean connectToRabbitMQ(CountDownLatch latch) {
-        ConnectionFactory factory = new ConnectionFactory();
-        factory.setHost(RABBITMQ_HOST);
-        factory.setUsername(RABBITMQ_USER);
-        factory.setPassword(RABBITMQ_PASSWORD);
-
-        try (Connection connection = factory.newConnection();
-             Channel channel = connection.createChannel();
-             ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor()) {
-
-            channel.queueDeclare(QUEUE_NAME, false, false, false, null);
-            System.out.println("Connected to RabbitMQ and queue declared.");
-
-            scheduler.scheduleAtFixedRate(() -> {
-                try {
-                    String jsonMessage = generateRandomJson();
-                    channel.basicPublish("", QUEUE_NAME, null, jsonMessage.getBytes(StandardCharsets.UTF_8));
-                    System.out.println("Sent: " + jsonMessage);
-                } catch (IOException e) {
-                    System.err.println("Failed to send message: " + e.getMessage());
-                }
-            }, 0, 10, TimeUnit.SECONDS);
-
-            latch.await();
-            scheduler.shutdown();
-
-            return scheduler.awaitTermination(5, TimeUnit.SECONDS);
-        } catch (Exception e) {
-            System.err.println("RabbitMQ connection error: " + e.getMessage());
-            try {
-                Thread.sleep(5000);
-                connectToRabbitMQ(latch);
-            } catch (InterruptedException ie) {
-                Thread.currentThread().interrupt();
-            }
-        }
-        return false;
-    }
-
-    private static String generateRandomJson() {
-        Random random = new Random();
-        JsonObject jsonObject = new JsonObject();
-        jsonObject.add("id", new JsonPrimitive(random.nextInt(1000)));
-        jsonObject.add("name", new JsonPrimitive("Item_" + random.nextInt(100)));
-        jsonObject.add("value", new JsonPrimitive(random.nextDouble() * 100));
-
-        return jsonObject.toString();
     }
 }

config/rabbitmq/rabbit.conf

@@ -0,0 +1,2 @@
+log.console = false
+log.console.level = error

docker-compose.yml

@@ -27,7 +27,7 @@ services:
       - RABBITMQ_DEFAULT_PASS=symphony
       - RABBITMQ_NODENAME=rabbit@rabbitmq
     volumes:
-      - rabbitmq_data:/var/lib/rabbitmq
+      - ./config/rabbitmq/rabbit.conf:/etc/rabbitmq/rabbitmq.conf:ro
     networks:
       - symphony-network
     restart: always
@@ -35,6 +35,3 @@ services:
 networks:
   symphony-network:
     driver: bridge
-
-volumes:
-  rabbitmq_data: