Added error handlings

Author: zuhalpolat

src/main/java/com/kodluyoruz/subscription/controllers/SubscriptionPaymentController.java

@@ -1,6 +1,7 @@
 package com.kodluyoruz.subscription.controllers;
 
 import com.kodluyoruz.subscription.contracts.requests.SubscriptionPaymentRequest;
+import com.kodluyoruz.subscription.exceptions.InternalServerErrorException;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
@@ -13,6 +14,11 @@ public class SubscriptionPaymentController {
     SubscriptionPaymentController subscriptionPaymentController;
     @PostMapping
     public ResponseEntity paySubscription(@RequestBody SubscriptionPaymentRequest subscriptionPaymentRequest, @PathVariable String id) {
-        return ResponseEntity.noContent().build();
+        try{
+            return ResponseEntity.noContent().build();
+        }catch (Exception e)
+        {
+            throw new InternalServerErrorException("Internal Server Error!");
+        }
     }
 }

src/main/java/com/kodluyoruz/subscription/exceptions/ExceptionDetails.java

@@ -0,0 +1,16 @@
+package com.kodluyoruz.subscription.exceptions;
+
+import lombok.Builder;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.util.Date;
+
+@Getter
+@Setter
+@Builder
+public class ExceptionDetails {
+
+    private String message;
+    private Date timeStamp;
+}

src/main/java/com/kodluyoruz/subscription/exceptions/ExceptionsHandler.java

@@ -0,0 +1,34 @@
+package com.kodluyoruz.subscription.exceptions;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.http.converter.HttpMessageNotReadableException;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+
+import java.util.Date;
+
+@ControllerAdvice
+public class ExceptionsHandler {
+
+    @ExceptionHandler(ResourceNotFoundException.class)
+    public ResponseEntity<Object> resourceNotFoundException(ResourceNotFoundException exception){
+        ExceptionDetails details = new ExceptionDetails(exception.getMessage(), new Date());
+
+        return new ResponseEntity<>(details, HttpStatus.NOT_FOUND);
+    }
+
+    @ExceptionHandler(InternalServerErrorException.class)
+    public ResponseEntity<Object> internalServerErrorException(InternalServerErrorException exception){
+        ExceptionDetails details = new ExceptionDetails(exception.getMessage(), new Date());
+
+        return new ResponseEntity<>(details, HttpStatus.INTERNAL_SERVER_ERROR);
+    }
+
+    @ExceptionHandler(HttpMessageNotReadableException.class)
+    public ResponseEntity<Object> httpMessageNotReadableException(HttpMessageNotReadableException exception){
+        ExceptionDetails details = new ExceptionDetails("One of the required parameter is null!", new Date());
+
+        return new ResponseEntity<>(details, HttpStatus.BAD_REQUEST);
+    }
+}

src/main/java/com/kodluyoruz/subscription/exceptions/InternalServerErrorException.java

@@ -0,0 +1,12 @@
+package com.kodluyoruz.subscription.exceptions;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ResponseStatus(value = HttpStatus.INTERNAL_SERVER_ERROR)
+public class InternalServerErrorException extends RuntimeException{
+
+    public InternalServerErrorException(String message){
+        super(message);
+    }
+}

src/main/java/com/kodluyoruz/subscription/exceptions/ResourceNotFoundException.java

@@ -0,0 +1,12 @@
+package com.kodluyoruz.subscription.exceptions;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ResponseStatus(value = HttpStatus.NOT_FOUND)
+public class ResourceNotFoundException extends RuntimeException{
+
+    public ResourceNotFoundException(String message){
+        super(message);
+    }
+}