Switched from single-node (assign) to multi-instance (subscribe)

[demos/kafka/demos-kafka-payment-system-transfer] / src / main / java / de / juplo / kafka / payment / transfer / adapter / TransferController.java

diff --git a/src/main/java/de/juplo/kafka/payment/transfer/adapter/TransferController.java b/src/main/java/de/juplo/kafka/payment/transfer/adapter/TransferController.java
index b9a2fb0..d81c554 100644 (file)
--- a/src/main/java/de/juplo/kafka/payment/transfer/adapter/TransferController.java
+++ b/src/main/java/de/juplo/kafka/payment/transfer/adapter/TransferController.java
@@ -24,7 +24,8 @@ import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
 
 
-@RestController
+@RequestMapping(TransferController.PATH)
+@ResponseBody
 @RequiredArgsConstructor
 @Slf4j
  public class TransferController
@@ -33,10 +34,11 @@ import java.util.concurrent.CompletableFuture;
 
   private final GetTransferUseCase getTransferUseCase;
   private final MessagingService messagingService;
+  private final TransferConsumer consumer;
 
 
   @PostMapping(
-      path = PATH,
+      path = "",
       consumes = MediaType.APPLICATION_JSON_VALUE,
       produces = MediaType.APPLICATION_JSON_VALUE)
   public DeferredResult<ResponseEntity<?>> transfer(
@@ -85,15 +87,27 @@ import java.util.concurrent.CompletableFuture;
   }
 
   @GetMapping(
-      path = PATH + "/{id}",
+      path = "/{id}",
       produces = MediaType.APPLICATION_JSON_VALUE)
   public ResponseEntity<TransferDTO> get(@PathVariable Long id)
   {
     return
-        getTransferUseCase
-            .get(id)
-            .map(transfer -> ResponseEntity.ok(TransferDTO.of(transfer)))
-            .orElse(ResponseEntity.notFound().build());
+        consumer
+            .uriForKey(Long.toString(id))
+            .map(uri ->
+            {
+              ResponseEntity<TransferDTO> response =
+                  ResponseEntity
+                      .status(HttpStatus.TEMPORARY_REDIRECT)
+                      .location(URI.create(uri + PATH + "/" + id))
+                      .build();
+              return response;
+            })
+            .orElseGet(() ->
+                getTransferUseCase
+                    .get(id)
+                    .map(transfer -> ResponseEntity.ok(TransferDTO.of(transfer)))
+                    .orElse(ResponseEntity.notFound().build()));
   }
 
   @ResponseStatus(HttpStatus.BAD_REQUEST)