feat: [CHK-3139] Expose http metrics

helm/values-dev.yaml

@@ -63,6 +63,12 @@ microservice-chart:
     create: false
     annotations: {}
     name: ""
+  serviceMonitor:
+    create: true
+    endpoints:
+      - interval: 10s
+        targetPort: 8080
+        path: /actuator/prometheus
   podAnnotations: {}
   podSecurityContext:
     seccompProfile:

pom.xml

@@ -55,6 +55,10 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-actuator</artifactId>
         </dependency>
+        <dependency>
+            <groupId>io.micrometer</groupId>
+            <artifactId>micrometer-registry-prometheus</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web-services</artifactId>

src/main/resources/application.properties

@@ -51,6 +51,13 @@ spring.data.mongodb.database=ecommerce
 management.endpoint.health.probes.enabled=true
 management.endpoint.health.show-details=always
 management.health.circuitbreakers.enabled=true
+# expose only health probes and prometheus metrics
+management.endpoints.web.exposure.include=health,prometheus
+# enable only prometheus as metric exporter
+# not default metrics are exported, for better readability see application.yaml
+management.metrics.export.defaults.enabled=false
+management.metrics.export.prometheus.enabled=true
+
 
 azurestorage.connectionstringtransient=${ECOMMERCE_STORAGE_TRANSIENT_CONNECTION_STRING}
 azurestorage.queues.transactionexpiration.name=${TRANSACTION_EXPIRATION_QUEUE_NAME}

src/main/resources/application.yml

@@ -1,3 +1,12 @@
+management.metrics.enable:
+    all: false
+    application: true # reports startup time, useful for future comparison
+    http.server.requests: true # reports http request counts
+    resilience4j.circuitbreaker: true # reports circuit breaker status
+    jvm.memory: true # reports heap status
+    jvm.gc: true # reports garbage collector metrics, useful to detect too long pauses
+    mongodb.driver: true # reports useful mongo statistics, like waiting queue
+
 resilience4j.retry:
   instances:
     newTransaction: