Added Rethink Realtime Ability

consumer/src/main/java/com/example/consumer/ConsumerApplication.java

 package com.example.consumer;
 
+import com.example.consumer.configuration.SocketTextHandler;
+import com.example.consumer.factory.RethinkDBConnectionFactory;
+import com.example.consumer.repository.RethinkChange;
+import com.rethinkdb.RethinkDB;
+import com.rethinkdb.net.Connection;
+import com.rethinkdb.net.Cursor;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.CommandLineRunner;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.kafka.annotation.KafkaListener;
 
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
 @SpringBootApplication
-public class ConsumerApplication {
+public class ConsumerApplication implements CommandLineRunner {
 
 	public static void main(String[] args) {
 
 		SpringApplication.run(ConsumerApplication.class, args);
 	}
+	private final RethinkDB r = RethinkDB.r;
+	@Autowired
+	public RethinkDBConnectionFactory connectionFactory;
+	@Autowired
+	private SocketTextHandler socket_server;
+
+	@Override
+	public void run(String... args) throws Exception {
+		Connection connection = connectionFactory.getConnection();
+		Cursor<RethinkChange> changeCursor = r.db("my_database").table("my_table").changes().optArg("include_initial",true).
+				run(connection, RethinkChange.class);
+		List<Map<String, Object>> result = new ArrayList<>();
+		for (RethinkChange change : changeCursor){
+			System.out.println("Something Changed");
+			result.add(change.getNew_val());
+			socket_server.broadcast(result);
+		}
+	}
 //	@KafkaListener(topics = "Test")
 //	public void handleNotification(String s) {
 //

consumer/src/main/java/com/example/consumer/configuration/SocketTextHandler.java

 package com.example.consumer.configuration;
 
 import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.CopyOnWriteArrayList;
 
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.ObjectWriter;
 import org.springframework.stereotype.Component;
+import org.springframework.web.socket.CloseStatus;
 import org.springframework.web.socket.TextMessage;
+import org.springframework.web.socket.WebSocketMessage;
 import org.springframework.web.socket.WebSocketSession;
 import org.springframework.web.socket.handler.TextWebSocketHandler;
 
 @Component
-public class SocketTextHandler {
-//        extends TextWebSocketHandler {
-//
-//    @Override
-//    public void handleTextMessage(WebSocketSession session, TextMessage message)
-//            throws InterruptedException, IOException {
-//
-//        String payload = message.getPayload();
-//        JSONObject jsonObject = new JSONObject(payload);
-//        session.sendMessage(new TextMessage("Hi " + jsonObject.get("user") + " how may we help you?"));
-//    }
+public class SocketTextHandler extends TextWebSocketHandler {
+    private List<WebSocketSession> sessions = new CopyOnWriteArrayList<>();
 
+    @Override
+    public void afterConnectionEstablished(WebSocketSession session) throws Exception {
+        System.out.println("New connection from " + session.getRemoteAddress());
+        sessions.add(session);
+    }
+
+    @Override
+    protected void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception {
+        System.out.println("Received message from " + session.getRemoteAddress() + ": " + message.getPayload());
+        // Handle incoming message
+    }
+
+    @Override
+    public void afterConnectionClosed(WebSocketSession session, CloseStatus status) throws Exception {
+        System.out.println("Connection closed to " + session.getRemoteAddress() + " with status " + status);
+        sessions.remove(session);
+    }
+
+    public void broadcast(List<Map<String, Object>> message) throws IOException {
+        System.out.println("Hey Broadcasting");
+        System.out.println(message);
+
+        ObjectWriter ow = new ObjectMapper().writer().withDefaultPrettyPrinter();
+        String json = ow.writeValueAsString(message);
+        System.out.println(json);
+        TextMessage s = new TextMessage(json);
+        System.out.println(s);
+        for (WebSocketSession session : sessions) {
+            if (session.isOpen()) {
+                session.sendMessage(s);
+            }
+        }
+    }
 }

consumer/src/main/java/com/example/consumer/configuration/WebSocketConfig.java

 package com.example.consumer.configuration;
 
+import com.example.consumer.services.RethinkDBService;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.messaging.simp.config.MessageBrokerRegistry;
 import org.springframework.web.socket.config.annotation.*;
 
 @Configuration
-public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
+@EnableWebSocket
+public class WebSocketConfig implements WebSocketConfigurer {
 
+    @Autowired
+    private SocketTextHandler socket_server;
     @Override
-    public void registerStompEndpoints(StompEndpointRegistry registry) {
-        registry.addEndpoint("/ws").setAllowedOriginPatterns("*").withSockJS();
-    }
-
-    @Override
-    public void configureMessageBroker(MessageBrokerRegistry registry) {
-        registry.setApplicationDestinationPrefixes("/app");
-        registry.enableSimpleBroker("/traps","/changes");
-        registry.setUserDestinationPrefix("/changes");
+    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
+        System.out.println("HEYYYYYYYYYYYYYYYYYY");
+        registry.addHandler(socket_server, "/my-websocket").setAllowedOrigins("*");
     }
 }

consumer/src/main/java/com/example/consumer/controller/RethinkController.java

@@ -27,6 +27,7 @@ public class RethinkController {
         @GetMapping("/data")
         public ResponseEntity<List<Map<String, Object>>> getData() {
             List<Map<String, Object>> result = rethinkDBService.getData("my_database", "my_table");
+            System.out.println(result);
             if (result != null) {
                 return ResponseEntity.ok(result);
             } else {

consumer/src/main/java/com/example/consumer/factory/RethinkDBConnectionFactory.java

@@ -2,12 +2,15 @@ package com.example.consumer.factory;
 
 import com.rethinkdb.RethinkDB;
 import com.rethinkdb.net.Connection;
+import com.rethinkdb.net.Cursor;
 import jakarta.annotation.PostConstruct;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Component;
 
+import java.util.List;
+import java.util.Map;
 import java.util.concurrent.TimeoutException;
 
 @Component
@@ -28,6 +31,17 @@ public class RethinkDBConnectionFactory {
         try {
             connection = r.connection().hostname(host).port(port).connect();
             log.info("RethinkDB connected successfully");
+            List<String> dbList = r.dbList().run(connection);
+            if (!dbList.contains("my_database")) {
+                System.out.println("Creating DATABASE Heeeeeeeeeeeeeeeeeeeeeeeeeere");
+                r.dbCreate("my_database").run(connection);
+            }
+            List<String> tables = r.db("my_database").tableList().run(connection);
+            if (!tables.contains("my_table")) {
+                System.out.println("Creating Table Heeeeeeeeeeeeeeeeeeeeeeeeeere");
+                r.db("my_database").tableCreate("my_table").run(connection);
+                //r.db("my_database").table("my_table").indexCreate("trap").run(connection);
+            }
         } catch (Exception e) {
             log.error("Error connecting to RethinkDB", e);
         }

consumer/src/main/java/com/example/consumer/repository/RethinkChange.java

+package com.example.consumer.repository;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.Map;
+
+@Data
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor
+public class RethinkChange {
+    private Map<String,Object> new_val;
+    private Map<String,Object> old_val;
+}

consumer/src/main/java/com/example/consumer/services/DbInitializer.java

@@ -20,17 +20,19 @@ public class DbInitializer implements InitializingBean {
     @Override
     public void afterPropertiesSet() throws Exception {
         createDb();
-
     }
 
     private void createDb() {
+        System.out.println("We are initializing heeeeeeeeeeeeeeeeeeeeeer");
         Connection connection = connectionFactory.getConnection();
         List<String> dbList = r.dbList().run(connection);
         if (!dbList.contains("new_database")) {
+            System.out.println("Creating DATABASE Heeeeeeeeeeeeeeeeeeeeeeeeeere");
             r.dbCreate("new_database").run(connection);
         }
         List<String> tables = r.db("new_database").tableList().run(connection);
         if (!tables.contains("new_table")) {
+            System.out.println("Creating Table Heeeeeeeeeeeeeeeeeeeeeeeeeere");
             r.db("new_database").tableCreate("new_table").run(connection);
             r.db("new_database").table("new_table").indexCreate("trap").run(connection);
         }

consumer/src/main/java/com/example/consumer/services/RethinkDBService.java

 package com.example.consumer.services;
 
+import com.example.consumer.configuration.SocketTextHandler;
 import com.example.consumer.factory.RethinkDBConnectionFactory;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.rethinkdb.RethinkDB;
 import com.rethinkdb.gen.ast.Json;
+import com.rethinkdb.gen.ast.Table;
 import com.rethinkdb.net.Cursor;
 import org.reactivestreams.Subscription;
 import org.slf4j.Logger;
@@ -42,6 +44,7 @@ public class RethinkDBService {
             String jsonString = "{\"trap\":\" "+message+"\"}";
             JsonNode jsonNode = objectMapper.readTree(jsonString);
             // Create a RethinkDB document object using the parsed JSON object
+
             Map<String, Object> document = objectMapper.convertValue(jsonNode, Map.class);
 
             r.db("my_database").table("my_table").insert(document).run(connectionFactory.getConnection());
@@ -71,7 +74,17 @@ public class RethinkDBService {
             return null;
         }
     }
+//Connection conn = connectionFactory.getConnection();
+    //Cursor<Map<String, Object> > changeCursor = r.db(database).table(table).changes().run(conn);
 
+        /*for (Object change : changeCursor) {
+            result.add((Map<String, Object>) change);
+        }
+        try {
+            socket_server.broadcast(result);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }*/
 
 }
 

consumer/src/main/resources/application.properties

 
-server.port = 2005
+server.port = 4164
 
 spring.kafka.bootstrap-servers=localhost:9092
 spring.kafka.template.default-topic=notificationTopic

docker-compose-elk.yaml

@@ -3,7 +3,7 @@ version: "3"
 services:
 
     elasticsearch:
-      image: docker.elastic.co/elasticsearch/elasticsearch:8.3.3
+      image: elasticsearch:8.7.1
       container_name: elasticsearch
       environment:
           - bootstrap.memory_lock=true
@@ -18,7 +18,7 @@ services:
           - elastic
 
     kibana:
-      image: docker.elastic.co/kibana/kibana:8.3.3
+      image: kibana:8.7.1
       container_name: kibana
       ports:
           - "5601:5601"