refactor: Moved exceptions into package `exceptions` - Aligned Code

[demos/kafka/chat] / src / main / java / de / juplo / kafka / chat / backend / api / ChatBackendControllerAdvice.java

diff --git a/src/main/java/de/juplo/kafka/chat/backend/api/ChatBackendControllerAdvice.java b/src/main/java/de/juplo/kafka/chat/backend/api/ChatBackendControllerAdvice.java
index fa3a0e1..90b639f 100644 (file)
--- a/src/main/java/de/juplo/kafka/chat/backend/api/ChatBackendControllerAdvice.java
+++ b/src/main/java/de/juplo/kafka/chat/backend/api/ChatBackendControllerAdvice.java
@@ -1,7 +1,9 @@
 package de.juplo.kafka.chat.backend.api;
 
-import de.juplo.kafka.chat.backend.domain.MessageMutationException;
-import de.juplo.kafka.chat.backend.domain.UnknownChatroomException;
+import de.juplo.kafka.chat.backend.domain.exceptions.InvalidUsernameException;
+import de.juplo.kafka.chat.backend.domain.exceptions.MessageMutationException;
+import de.juplo.kafka.chat.backend.domain.exceptions.ShardNotOwnedException;
+import de.juplo.kafka.chat.backend.domain.exceptions.UnknownChatroomException;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ProblemDetail;
@@ -45,6 +47,38 @@ public class ChatBackendControllerAdvice
     problem.setDetail(stringBuilder.toString());
 
     problem.setProperty("chatroomId", e.getChatroomId());
+    problem.setProperty("shard", e.getShard());
+    problem.setProperty("ownedShards", e.getOwnedShards());
+
+    return problem;
+  }
+
+  @ExceptionHandler(ShardNotOwnedException.class)
+  public final ProblemDetail handleException(
+      ShardNotOwnedException e,
+      ServerWebExchange exchange,
+      UriComponentsBuilder uriComponentsBuilder)
+  {
+    final HttpStatus status = HttpStatus.NOT_FOUND;
+    ProblemDetail problem = ProblemDetail.forStatus(status);
+
+    problem.setProperty("timestamp", new Date());
+
+    problem.setProperty("requestId", exchange.getRequest().getId());
+
+    problem.setType(uriComponentsBuilder.replacePath(contextPath).path("/problem/shard-not-owned").build().toUri());
+    StringBuilder stringBuilder = new StringBuilder();
+    stringBuilder.append(status.getReasonPhrase());
+    stringBuilder.append(" - ");
+    stringBuilder.append(e.getMessage());
+    problem.setTitle(stringBuilder.toString());
+
+    stringBuilder.setLength(0);
+    stringBuilder.append("Shard not owned: ");
+    stringBuilder.append(e.getShard());
+    problem.setDetail(stringBuilder.toString());
+
+    problem.setProperty("shard", e.getShard());
 
     return problem;
   }
@@ -83,4 +117,37 @@ public class ChatBackendControllerAdvice
 
     return problem;
   }
+
+  @ExceptionHandler(InvalidUsernameException.class)
+  public final ProblemDetail handleException(
+      InvalidUsernameException e,
+      ServerWebExchange exchange,
+      UriComponentsBuilder uriComponentsBuilder)
+  {
+    final HttpStatus status = HttpStatus.BAD_REQUEST;
+    ProblemDetail problem = ProblemDetail.forStatus(status);
+
+    problem.setProperty("timestamp", new Date());
+
+    problem.setProperty("requestId", exchange.getRequest().getId());
+
+    problem.setType(uriComponentsBuilder.replacePath(contextPath).path("/problem/invalid-username").build().toUri());
+    StringBuilder stringBuilder = new StringBuilder();
+    stringBuilder.append(status.getReasonPhrase());
+    stringBuilder.append(" - ");
+    stringBuilder.append(e.getMessage());
+    problem.setTitle(stringBuilder.toString());
+
+    stringBuilder.setLength(0);
+    stringBuilder.append("Invalid username: ");
+    stringBuilder.append(e.getUsername());
+    stringBuilder.append(
+        "! A valid username must consist of at at least two letters and " +
+        "must only contain lower case letters a-z, numbers and dashes");
+    problem.setDetail(stringBuilder.toString());
+
+    problem.setProperty("username", e.getUsername());
+
+    return problem;
+  }
 }