Bugfix/rest annotation in metric controller

CHANGELOG.md

@@ -11,6 +11,7 @@ All notable changes to this project will be documented in this file.
 * Improve code quality and tests.
 * Removed unused variables in configuration.
 * Use existing `toString()` method to serialize and hash scheduler public configuration.
+* Use recommended annotation in `MetricController`.
 ### Dependency Upgrades
 * Upgrade to Spring Boot 2.6.14.
 * Upgrade to Gradle 7.6.

src/main/java/com/iexec/core/metric/MetricController.java

@@ -16,26 +16,22 @@
 
 package com.iexec.core.metric;
 
-
 import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RestController;
 
 import static org.springframework.http.ResponseEntity.ok;
 
 @RestController
 public class MetricController {
 
-
-    private MetricService metricService;
+    private final MetricService metricService;
 
     public MetricController(MetricService metricService) {
         this.metricService = metricService;
     }
 
-
-    @RequestMapping(method = RequestMethod.GET, path = "/metrics")
+    @GetMapping("/metrics")
     public ResponseEntity<PlatformMetric> getPlatformMetric() {
         return ok(metricService.getPlatformMetrics());
     }