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.validation.Valid;
  16 import java.net.URI;
  17 import java.util.HashMap;
  18 import java.util.Map;
  19 import java.util.Optional;
  20
  21
  22 @RestController
  23 @RequiredArgsConstructor
  24 @Slf4j
  25  public class TransferController
  26 {
  27   public final static String PATH = "/transfers";
  28
  29   private final TransferService service;
  30
  31
  32   @PostMapping(
  33       path = PATH,
  34       consumes = MediaType.APPLICATION_JSON_VALUE,
  35       produces = MediaType.APPLICATION_JSON_VALUE)
  36   public ResponseEntity<?> transfer(@Valid @RequestBody TransferDTO transferDTO)
  37   {
  38     Transfer transfer =
  39         Transfer
  40             .builder()
  41             .id(transferDTO.getId())
  42             .payer(transferDTO.getPayer())
  43             .payee(transferDTO.getPayee())
  44             .amount(transferDTO.getAmount())
  45             .build();
  46
  47     service.initiate(transfer);
  48
  49     return ResponseEntity.created(URI.create(PATH + "/" + transferDTO.getId())).build();
  50   }
  51
  52   @GetMapping(
  53       path = PATH + "/{id}",
  54       produces = MediaType.APPLICATION_JSON_VALUE)
  55   public ResponseEntity<TransferDTO> get(@PathVariable Long id)
  56   {
  57     return
  58         service
  59             .get(id)
  60             .map(transfer -> ResponseEntity.ok(TransferDTO.of(transfer)))
  61             .orElse(ResponseEntity.notFound().build());
  62   }
  63
  64   @ResponseStatus(HttpStatus.BAD_REQUEST)
  65   @ExceptionHandler(MethodArgumentNotValidException.class)
  66   public Map<String, String> handleValidationExceptions(
  67       MethodArgumentNotValidException ex) {
  68     Map<String, String> errors = new HashMap<>();
  69     ex.getBindingResult().getAllErrors().forEach((error) -> {
  70       String fieldName = ((FieldError) error).getField();
  71       String errorMessage = error.getDefaultMessage();
  72       errors.put(fieldName, errorMessage);
  73     });
  74     return errors;
  75   }
  76 }