Add the whole observability stack and features

easypay-service/build.gradle.kts

@@ -64,4 +64,4 @@ dependencyManagement {
 
 tasks.withType<Test> {
 	useJUnitPlatform()
-}
+}

easypay-service/src/main/java/com/worldline/easypay/EasypayServiceApplication.java

@@ -1,5 +1,7 @@
 package com.worldline.easypay;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

easypay-service/src/main/java/com/worldline/easypay/payment/boundary/PaymentResource.java

@@ -8,11 +8,14 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.http.ResponseEntity;
+import org.springframework.http.converter.HttpMessageNotReadableException;
+import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseStatus;
 import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
 
@@ -26,6 +29,7 @@
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import jakarta.validation.Valid;
 import jakarta.validation.constraints.NotNull;
+import org.springframework.http.HttpStatus;
 
 @RestController
 @RequestMapping("/payments")