Merge pull request #32 from vimal-tech-starter/feature/phase-9-observability

Phase 9: Add Micrometer + Prometheus metrics support + Grafana visual dashboards

Author: vimal-java-dev

.gitignore

@@ -23,7 +23,7 @@ logs/
 ############################################
 # Environment / Secrets
 ############################################
-.env
+.env.dev
 .env.*
 *.env
 *.key

docker-compose.yml

@@ -1,5 +1,3 @@
-version: "3.9"
-
 services:
 
   postgres:
@@ -15,7 +13,7 @@ services:
     volumes:
       - vimaltech_pgdata:/var/lib/postgresql/data
     healthcheck:
-      test: [ "CMD-SHELL", "pg_isready -U contactuser -d contactdb" ]
+      test: ["CMD-SHELL", "pg_isready -U contactuser -d contactdb"]
       interval: 10s
       timeout: 5s
       retries: 5
@@ -28,9 +26,30 @@ services:
         condition: service_healthy
     ports:
       - "8080:8080"
+    env_file:
+      - .env.prod
     environment:
-      SPRING_PROFILES_ACTIVE: dev
+      SPRING_PROFILES_ACTIVE: prod
+    restart: unless-stopped
+
+  prometheus:
+    image: prom/prometheus
+    container_name: vimaltech-prometheus
+    volumes:
+      - ./prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
+    ports:
+      - "9090:9090"
+    restart: unless-stopped
+
+  grafana:
+    image: grafana/grafana
+    container_name: vimaltech-grafana
+    ports:
+      - "3000:3000"
+    volumes:
+      - grafana_data:/var/lib/grafana
     restart: unless-stopped
 
 volumes:
-  vimaltech_pgdata:
+  vimaltech_pgdata:
+  grafana_data:

pom.xml

@@ -110,6 +110,16 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-data-redis</artifactId>
 		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-actuator</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>io.micrometer</groupId>
+			<artifactId>micrometer-registry-prometheus</artifactId>
+		</dependency>
 	</dependencies>
 
 	<build>

prometheus/prometheus.yml

@@ -0,0 +1,10 @@
+global:
+  scrape_interval: 15s
+
+scrape_configs:
+  - job_name: 'contact-api'
+
+    metrics_path: /actuator/prometheus
+
+    static_configs:
+      - targets: ['contact-api:8080']

src/main/resources/application-prod.yml

@@ -35,4 +35,18 @@ logging:
     root: WARN
     com.vimaltech.contactapi: INFO
     org.springframework: WARN
-    org.hibernate: WARN
+    org.hibernate: WARN
+
+management:
+  endpoints:
+    web:
+      exposure:
+        include: health,info,prometheus
+
+  endpoint:
+    health:
+      show-details: never
+
+  metrics:
+    tags:
+      application: contact-api