Containerising App and verify Mongo and Kafka connections (#16)

* Prometheus setup

* minor fix and app dashboard

* Containerising App

Verified mongo and Kafka and internally accessible from App

Author: SVAdithya

Dockerfile

@@ -10,7 +10,7 @@ RUN apt-get update && apt-get install -y telnet
 WORKDIR /app
 
 # Copy the jar file
-COPY target/kafkaStudy-0.0.1-SNAPSHOT.jar .
+COPY target/kafkaStudy-0.0.1-SNAPSHOT.jar app.jar
 
 # Command to run the application
-CMD ["java", "-jar", "kafkaStudy-0.0.1-SNAPSHOT.jar"]
+CMD ["java", "-jar", "app.jar"]

docker-compose.yml

@@ -1,11 +1,33 @@
-version: '2'
+version: '3.8'  # Specify the version of the Compose file
+
+networks:
+  app-network:  # Define the network here
+    driver: bridge
 
 services:
+  app:
+    build:
+      context: .       # Build from the current directory, where Dockerfile is located
+      dockerfile: Dockerfile  # Specify the Dockerfile
+    container_name: kafka-study-app
+
+    ports:
+      - "8080:8080"    # Expose the app on localhost:8080
+    depends_on:
+      - kafka
+      - mongodb
+    command: ["java", "-jar", "/app/app.jar"] # Command to run the app
+    networks:
+      - app-network
+
   zookeeper:
     image: wurstmeister/zookeeper:latest
     ports:
       - "2181:2181"
     container_name: zookeeper
+    networks:
+      - app-network
+
   kafka:
     image: wurstmeister/kafka:latest
     ports:
@@ -24,17 +46,23 @@ services:
       - zookeeper
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
+    networks:
+      - app-network
+
   mongodb:
     image: mongo:latest
-    container_name: mongodb-container
+    container_name: mongodb
     ports:
       - "27017:27017"
     environment:
       MONGO_INITDB_ROOT_USERNAME: root
       MONGO_INITDB_ROOT_PASSWORD: example
     volumes:
       - mongo-data:/data/db
-#sonar - code quality
+    networks:
+      - app-network
+
+  # SonarQube for code quality
   sonarqube:
     image: sonarqube
     ports:
@@ -47,7 +75,10 @@ services:
       - sonarqube_data:/opt/sonarqube/data
       - sonarqube_logs:/opt/sonarqube/logs
       - sonarqube_extensions:/opt/sonarqube/extensions
-#Sonar-related postgres
+    networks:
+      - app-network
+
+  # SonarQube-related PostgreSQL database
   postgres:
     image: postgres
     environment:
@@ -56,6 +87,8 @@ services:
       POSTGRES_PASSWORD: sonar
     volumes:
       - postgres_data:/var/lib/postgresql/data
+    networks:
+      - app-network
 
   prometheus:
     image: prom/prometheus:latest
@@ -65,6 +98,8 @@ services:
       - prometheus_data:/prometheus
     ports:
       - "9090:9090"
+    networks:
+      - app-network
 
   grafana:
     image: grafana/grafana:latest
@@ -75,6 +110,9 @@ services:
       - GF_SECURITY_ADMIN_PASSWORD=admin
     volumes:
       - grafana-storage:/var/lib/grafana
+    networks:
+      - app-network
+
 volumes:
   mongo-data:
   sonarqube_data:

pom.xml

@@ -88,6 +88,18 @@
 				<artifactId>sonar-maven-plugin</artifactId>
 				<version>4.0.0.4121</version>
 			</plugin>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+				<executions>
+					<execution>
+						<goals>
+							<goal>repackage</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
 		</plugins>
 	</build>
+
 </project>

src/main/resources/application.properties

@@ -2,13 +2,13 @@ spring.application.name=KafkaStudy
 kafka.regular.topic=my-topic
 regular.kafka.autostart=false
 reactive.kafka.autostart=true
-spring.kafka.consumer.bootstrap-servers=127.0.0.1:9092
+spring.kafka.consumer.bootstrap-servers=kafka:9092
 spring.kafka.consumer.group-id=demo-3
 spring.kafka.consumer.auto-offset-reset=earliest
 spring.kafka.consumer.key-deserializer=org.apache.kafka.common.serialization.StringDeserializer
 spring.kafka.consumer.value-deserializer=org.apache.kafka.common.serialization.StringDeserializer
 spring.kafka.consumer.properties.session.timeout.ms=30000
 spring.kafka.consumer.properties.heartbeat.interval.ms=10000
-spring.data.mongodb.uri=mongodb://root:example@localhost:27017/testMongoDb?authSource=admin
+spring.data.mongodb.uri=mongodb://root:example@mongodb:27017/testMongoDb?authSource=admin
 mask.headers.list=pwd,pass
 management.endpoints.web.exposure.include = *