add health checks

api/pom.xml

@@ -52,6 +52,10 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-amqp</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>

api/src/main/resources/config/application.properties

@@ -1,3 +1,4 @@
 spring.application.name=observation-tracker
 spring.profiles.active=prod
 
+management.endpoint.health.show-details=always

infrastructure/ecr_alb.tf

@@ -5,6 +5,14 @@ resource "aws_lb_target_group" "observation_tracker_api" {
   target_type = "ip"
   vpc_id      = aws_vpc.vpc.id
 
+  health_check {
+    enabled = true
+    healthy_threshold = 2
+    interval = 30
+    path = "/actuator/health/db"
+    matcher = "200"
+  }
+
   depends_on = [aws_alb.observation_tracker_alb]
 }
 
@@ -28,7 +36,7 @@ resource "aws_alb" "observation_tracker_alb" {
 
 resource "aws_alb_listener" "sun_api_http" {
   load_balancer_arn = aws_alb.observation_tracker_alb.arn
-  port              = "80"
+  port              = 80
   protocol          = "HTTP"
 
   default_action {