juplo.de Git - demos/kafka/demos-kafka-payment-system-transfer/blob - src/main/java/de/juplo/kafka/payment/transfer/adapter/TransferController.java

   1 package de.juplo.kafka.payment.transfer.adapter;
   2
   3
   4 import de.juplo.kafka.payment.transfer.domain.Transfer;
   5 import de.juplo.kafka.payment.transfer.ports.GetTransferUseCase;
   6 import de.juplo.kafka.payment.transfer.ports.InitiateTransferUseCase;
   7 import lombok.RequiredArgsConstructor;
   8 import lombok.extern.slf4j.Slf4j;
   9 import org.springframework.http.HttpStatus;
  10 import org.springframework.http.MediaType;
  11 import org.springframework.http.ResponseEntity;
  12 import org.springframework.validation.FieldError;
  13 import org.springframework.web.bind.MethodArgumentNotValidException;
  14 import org.springframework.web.bind.annotation.*;
  15
  16 import javax.servlet.http.HttpServletRequest;
  17 import javax.validation.Valid;
  18 import java.net.URI;
  19 import java.util.Date;
  20 import java.util.HashMap;
  21 import java.util.Map;
  22
  23
  24 @RestController
  25 @RequiredArgsConstructor
  26 @Slf4j
  27  public class TransferController
  28 {
  29   public final static String PATH = "/transfers";
  30
  31   private final InitiateTransferUseCase initiateTransferUseCase;
  32   private final GetTransferUseCase getTransferUseCase;
  33
  34
  35   @PostMapping(
  36       path = PATH,
  37       consumes = MediaType.APPLICATION_JSON_VALUE,
  38       produces = MediaType.APPLICATION_JSON_VALUE)
  39   public ResponseEntity<?> transfer(@Valid @RequestBody TransferDTO transferDTO)
  40   {
  41     Transfer transfer =
  42         Transfer
  43             .builder()
  44             .id(transferDTO.getId())
  45             .payer(transferDTO.getPayer())
  46             .payee(transferDTO.getPayee())
  47             .amount(transferDTO.getAmount())
  48             .build();
  49
  50     initiateTransferUseCase.initiate(transfer);
  51
  52     return ResponseEntity.created(URI.create(PATH + "/" + transferDTO.getId())).build();
  53   }
  54
  55   @GetMapping(
  56       path = PATH + "/{id}",
  57       produces = MediaType.APPLICATION_JSON_VALUE)
  58   public ResponseEntity<TransferDTO> get(@PathVariable Long id)
  59   {
  60     return
  61         getTransferUseCase
  62             .get(id)
  63             .map(transfer -> ResponseEntity.ok(TransferDTO.of(transfer)))
  64             .orElse(ResponseEntity.notFound().build());
  65   }
  66
  67   @ResponseStatus(HttpStatus.BAD_REQUEST)
  68   @ExceptionHandler(MethodArgumentNotValidException.class)
  69   public Map<String, Object> handleValidationExceptions(
  70       HttpServletRequest request,
  71       MethodArgumentNotValidException e)
  72   {
  73     Map<String, Object> errorAttributes = new HashMap<>();
  74     errorAttributes.put("status", HttpStatus.BAD_REQUEST.value());
  75     errorAttributes.put("error", HttpStatus.BAD_REQUEST.getReasonPhrase());
  76     errorAttributes.put("path", request.getRequestURI());
  77     errorAttributes.put("method", request.getMethod());
  78     errorAttributes.put("timestamp", new Date());
  79     Map<String, String> errors = new HashMap<>();
  80     e.getBindingResult().getAllErrors().forEach((error) -> {
  81       String fieldName = ((FieldError) error).getField();
  82       String errorMessage = error.getDefaultMessage();
  83       errors.put(fieldName, errorMessage);
  84     });
  85     errorAttributes.put("errors", errors);
  86     errorAttributes.put("message", "Validation failed: Invalid message format, error count: " + errors.size());
  87     return errorAttributes;
  88   }
  89 }