Added Exception handling

Signed-off-by: muhamadto <muhamadto@gmail.com>

Author: muhamadto

README.md

@@ -49,7 +49,7 @@ $ ./mvnw -ntp clean verify -U --settings ./settings-spring.xml
    ```
 3. Make a call
     ```shell
-   $ curl --location --request POST 'http://localhost:8080/exampleFunction' \
+   $ curl --location --request POST 'https://ffwtdrvhmg.execute-api.ap-southeast-2.amazonaws.com/dev' \
    --header 'Content-Type: application/json' \
    --data-raw '{
         "name": "CoffeeBeans"
@@ -250,6 +250,7 @@ and the following trust relationship
             "lambda:RemovePermission",
             "lambda:PutFunctionEventInvokeConfig",
             "lambda:DeleteFunctionEventInvokeConfig",
+            "lambda:UpdateFunctionEventInvokeConfig",
             "lambda:UpdateFunctionCode",
             "lambda:ListTags",
             "lambda:UpdateFunctionConfiguration"

spring-native-aws-lambda-function/src/main/java/com/coffeebeans/springnativeawslambda/function/LambdaExceptionHandler.java

@@ -0,0 +1,42 @@
+package com.coffeebeans.springnativeawslambda.function;
+
+import com.amazonaws.services.lambda.runtime.events.APIGatewayProxyRequestEvent;
+import com.amazonaws.services.lambda.runtime.events.APIGatewayProxyResponseEvent;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import java.util.Map;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+@Slf4j
+@RestControllerAdvice
+public class LambdaExceptionHandler {
+
+  @ExceptionHandler(ClassCastException.class)
+  public APIGatewayProxyResponseEvent handleException(
+      final ClassCastException e,
+      final APIGatewayProxyRequestEvent request) {
+    log.error("Error processing request: {}", e.getMessage());
+    return new APIGatewayProxyResponseEvent()
+        .withStatusCode(500)
+        .withHeaders(Map.of("X-Requested-Id", request.getRequestContext().getRequestId()))
+        .withBody("{\n"
+            + "          \"message\": \"Internal Server Error\",\n"
+            + "          \"errorCode\": \"SERVER_ERROR\n"
+            + "        }");
+  }
+
+  @ExceptionHandler(JsonProcessingException.class)
+  public APIGatewayProxyResponseEvent handleException(
+      final JsonProcessingException e,
+      final APIGatewayProxyRequestEvent request) {
+    log.error("Error processing request: {}", e.getMessage());
+    return new APIGatewayProxyResponseEvent()
+        .withStatusCode(500)
+        .withHeaders(Map.of("X-Requested-Id", request.getRequestContext().getRequestId()))
+        .withBody("{\n"
+            + "          \"message\": \"Internal Server Error\",\n"
+            + "          \"errorCode\": \"SERVER_ERROR\n"
+            + "        }");
+  }
+}

spring-native-aws-lambda-function/src/main/resources/application.yml

@@ -1,7 +1,7 @@
 spring:
   main:
     banner-mode: off
-    web-application-type: servlet # change to 'servlet' for development
+    web-application-type: none # change to 'servlet' for development
   cloud:
     function:
       web: