initial commit

src/main/java/com/cfdeployer/exception/GlobalExceptionHandler.java

@@ -0,0 +1,79 @@
+package com.cfdeployer.exception;
+
+import com.cfdeployer.model.CfDeployResponse;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.validation.FieldError;
+import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+import org.springframework.web.multipart.MaxUploadSizeExceededException;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+@Slf4j
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    public ResponseEntity<CfDeployResponse> handleValidationExceptions(MethodArgumentNotValidException ex) {
+        log.error("Validation error occurred", ex);
+
+        Map<String, String> errors = new HashMap<>();
+        ex.getBindingResult().getAllErrors().forEach((error) -> {
+            String fieldName = ((FieldError) error).getField();
+            String errorMessage = error.getDefaultMessage();
+            errors.put(fieldName, errorMessage);
+        });
+
+        String errorMessage = errors.entrySet().stream()
+                .map(entry -> entry.getKey() + ": " + entry.getValue())
+                .collect(Collectors.joining(", "));
+
+        CfDeployResponse response = CfDeployResponse.failure(
+                "Validation failed: " + errorMessage,
+                ex.getMessage()
+        );
+
+        return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(response);
+    }
+
+    @ExceptionHandler(MaxUploadSizeExceededException.class)
+    public ResponseEntity<CfDeployResponse> handleMaxUploadSizeExceededException(MaxUploadSizeExceededException ex) {
+        log.error("File size exceeded maximum allowed size", ex);
+
+        CfDeployResponse response = CfDeployResponse.failure(
+                "File size exceeded maximum allowed size. Please ensure your files are within the 500MB limit.",
+                ex.getMessage()
+        );
+
+        return ResponseEntity.status(HttpStatus.PAYLOAD_TOO_LARGE).body(response);
+    }
+
+    @ExceptionHandler(IllegalArgumentException.class)
+    public ResponseEntity<CfDeployResponse> handleIllegalArgumentException(IllegalArgumentException ex) {
+        log.error("Invalid argument provided", ex);
+
+        CfDeployResponse response = CfDeployResponse.failure(
+                ex.getMessage(),
+                ex.toString()
+        );
+
+        return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(response);
+    }
+
+    @ExceptionHandler(Exception.class)
+    public ResponseEntity<CfDeployResponse> handleGenericException(Exception ex) {
+        log.error("Unexpected error occurred", ex);
+
+        CfDeployResponse response = CfDeployResponse.failure(
+                "An unexpected error occurred: " + ex.getMessage(),
+                ex.toString()
+        );
+
+        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(response);
+    }
+}