feat: [OpenAPI] ResponseMetadataListener with case insensitive header map

datamodel/openapi/openapi-core/src/main/java/com/sap/cloud/sdk/services/openapi/apache/ApiClient.java

@@ -94,7 +94,7 @@ public class ApiClient
     private final String tempFolderPath;
 
     @With
-    private final ResponseMetadataListener responseMetadataListener;
+    private final OpenApiResponseListener openApiResponseListener;
 
     // Methods that can have a request body
     private static final Set<Method> BODY_METHODS = Set.of(Method.POST, Method.PUT, Method.PATCH, Method.DELETE);
@@ -570,7 +570,7 @@ public <T> T invokeAPI(
 
         try {
             final HttpClientResponseHandler<T> responseHandler =
-                new DefaultApiResponseHandler<>(objectMapper, tempFolderPath, returnType, responseMetadataListener);
+                new DefaultApiResponseHandler<>(objectMapper, tempFolderPath, returnType, openApiResponseListener);
             return httpClient.execute(builder.build(), context, responseHandler);
         }
         catch( IOException e ) {

datamodel/openapi/openapi-core/src/main/java/com/sap/cloud/sdk/services/openapi/apache/DefaultApiResponseHandler.java

@@ -67,9 +67,9 @@ class DefaultApiResponseHandler<T> implements HttpClientResponseHandler<T>
     @Nonnull
     private final TypeReference<T> returnType;
 
-    /** Optional listener for response metadata including status code and headers */
+    /** Optional listener for OpenAPI response including status code and headers */
     @Nullable
-    private final ResponseMetadataListener responseMetadataListener;
+    private final OpenApiResponseListener openApiResponseListener;
 
     @Nullable
     @Override
@@ -107,8 +107,8 @@ private T processResponse( @Nonnull final ClassicHttpResponse response )
     {
         final int statusCode = response.getCode();
         final Map<String, List<String>> headers = transformResponseHeaders(response.getHeaders());
-        if( responseMetadataListener != null ) {
-            responseMetadataListener.onResponse(new OpenApiResponse(statusCode, headers));
+        if( openApiResponseListener != null ) {
+            openApiResponseListener.onResponse(new OpenApiResponse(statusCode, headers));
         }
 
         if( statusCode == HttpStatus.SC_NO_CONTENT ) {

datamodel/openapi/openapi-core/src/main/java/com/sap/cloud/sdk/services/openapi/apache/ResponseMetadataListener.java → datamodel/openapi/openapi-core/src/main/java/com/sap/cloud/sdk/services/openapi/apache/OpenApiResponseListener.java

@@ -8,13 +8,13 @@
  * @since 5.25.0
  */
 @FunctionalInterface
-public interface ResponseMetadataListener
+public interface OpenApiResponseListener
 {
     /**
      * Called when an HTTP response is received.
      *
      * @param response
      *            The response metadata.
      */
-    void onResponse(@Nonnull final OpenApiResponse response );
+    void onResponse( @Nonnull final OpenApiResponse response );
 }

datamodel/openapi/openapi-core/src/test/java/com/sap/cloud/sdk/services/openapi/apiclient/ApacheApiClientResponseHandlingTest.java

@@ -47,7 +47,7 @@ void testResponseMetadataListener( final WireMockRuntimeInfo wmInfo )
 
         final AtomicReference<OpenApiResponse> metadata = new AtomicReference<>();
         final ApiClient apiClient =
-            ApiClient.create().withBasePath(wmInfo.getHttpBaseUrl()).withResponseMetadataListener(metadata::set);
+            ApiClient.create().withBasePath(wmInfo.getHttpBaseUrl()).withOpenApiResponseListener(metadata::set);
 
         final TestApi api = new TestApi(apiClient);
         final TestResponse result = api.executeRequest();
@@ -75,10 +75,7 @@ void testCaseInsensitiveHeaderLookup( final WireMockRuntimeInfo wmInfo )
 
         final AtomicReference<OpenApiResponse> capturedResponse = new AtomicReference<>();
         final ApiClient apiClient =
-            ApiClient
-                .create()
-                .withBasePath(wmInfo.getHttpBaseUrl())
-                .withResponseMetadataListener(capturedResponse::set);
+            ApiClient.create().withBasePath(wmInfo.getHttpBaseUrl()).withOpenApiResponseListener(capturedResponse::set);
 
         final TestApi api = new TestApi(apiClient);
         api.executeRequest();