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

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