Class GlobalExceptionHandler

java.lang.Object

com.nmontytskyi.monitoring.server.exception.GlobalExceptionHandler

@RestControllerAdvice
public class GlobalExceptionHandler
extends Object

Centralised exception handler for the REST API layer.

Translates application-specific exceptions into appropriate HTTP responses with structured JSON error bodies. Handles ServiceNotFoundException (404), ServiceAlreadyRegisteredException (409), ReportGenerationException (500), and Spring's validation constraint violations (400).

Author:

Nazar Montytskyi

Constructor Summary

Constructors

Constructor	Description
GlobalExceptionHandler()

Method Summary

Modifier and Type	Method	Description
org.springframework.http.ResponseEntity<Map<String,Object>>	handleConstraintViolation(jakarta.validation.ConstraintViolationException ex)	Handles ConstraintViolationException thrown by MethodValidationInterceptor when @Validated class-level validation fails (e.g. for method parameters like List<@Valid T>).
org.springframework.http.ResponseEntity<Map<String,Object>>	handleReportGeneration(ReportGenerationException ex)
org.springframework.http.ResponseEntity<Map<String,Object>>	handleServiceAlreadyRegistered(ServiceAlreadyRegisteredException ex)
org.springframework.http.ResponseEntity<Map<String,Object>>	handleServiceNotFound(ServiceNotFoundException ex)
org.springframework.http.ResponseEntity<Map<String,Object>>	handleValidation(org.springframework.web.bind.MethodArgumentNotValidException ex)	Handles MethodArgumentNotValidException thrown by Spring MVC when @Valid @RequestBody validation fails on a POJO request body.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

GlobalExceptionHandler

public GlobalExceptionHandler()

Method Details

handleServiceNotFound

@ExceptionHandler(ServiceNotFoundException.class)
public org.springframework.http.ResponseEntity<Map<String,Object>> handleServiceNotFound(ServiceNotFoundException ex)

handleServiceAlreadyRegistered

@ExceptionHandler(ServiceAlreadyRegisteredException.class)
public org.springframework.http.ResponseEntity<Map<String,Object>> handleServiceAlreadyRegistered(ServiceAlreadyRegisteredException ex)

handleReportGeneration

@ExceptionHandler(ReportGenerationException.class)
public org.springframework.http.ResponseEntity<Map<String,Object>> handleReportGeneration(ReportGenerationException ex)

handleValidation

@ExceptionHandler(org.springframework.web.bind.MethodArgumentNotValidException.class)
public org.springframework.http.ResponseEntity<Map<String,Object>> handleValidation(org.springframework.web.bind.MethodArgumentNotValidException ex)

Handles MethodArgumentNotValidException thrown by Spring MVC when @Valid @RequestBody validation fails on a POJO request body.

handleConstraintViolation

@ExceptionHandler(jakarta.validation.ConstraintViolationException.class)
public org.springframework.http.ResponseEntity<Map<String,Object>> handleConstraintViolation(jakarta.validation.ConstraintViolationException ex)

Handles ConstraintViolationException thrown by MethodValidationInterceptor when @Validated class-level validation fails (e.g. for method parameters like List<@Valid T>).