ATS-126 : Expose JVM metrics - eg. CPU & Memory (within jvm process / container)

- added actuator & micrometer
   - enabled /health, /metrics & /prometheus
   - disabled some of the default metrics (subject to be discussed)

alfresco-transformer-base/pom.xml

@@ -21,6 +21,14 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</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>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>

alfresco-transformer-base/src/main/resources/application.yaml

@@ -17,3 +17,22 @@ logging:
     org.alfresco.transformer.TikaController: debug
 
 fileStoreUrl: ${FILE_STORE_URL:http://localhost:8099/alfresco/api/-default-/private/sfs/versions/1/file}
+
+management:
+  endpoints:
+    web:
+      exposure:
+        include:
+        - metrics
+        - prometheus
+        - health
+  metrics:
+    enable[go]: false
+    enable[http]: false
+    enable[net]: false
+    enable[logback]: false
+    enable[prometheus]: false
+    enable[promhttp]: false
+    enable[tomcat]: false
+    enable[scrape]: false
+    enable[jvm.classes]: false