Add DioException response data to error breadcrumb

CHANGELOG.md

@@ -8,6 +8,10 @@
 - Tag all spans with thread info on non-web platforms ([#3101](https://github.com/getsentry/sentry-dart/pull/3101), [#3144](https://github.com/getsentry/sentry-dart/pull/3144))
 - feat(feedback): Add option to disable keyboard resize ([#3154](https://github.com/getsentry/sentry-dart/pull/3154))
 
+### Enhancements
+
+- Add `DioException` response data to error breadcrumb ([#3164](https://github.com/getsentry/sentry-dart/pull/3164))
+
 ## 9.7.0-beta.1
 
 ### Features

packages/dio/lib/src/breadcrumb_client_adapter.dart

@@ -36,6 +36,7 @@ class BreadcrumbClientAdapter implements HttpClientAdapter {
     final stopwatch = Stopwatch();
     stopwatch.start();
 
+    DioException? dioException;
     try {
       final response =
           await _client.fetch(options, requestStream, cancelFuture);
@@ -46,6 +47,10 @@ class BreadcrumbClientAdapter implements HttpClientAdapter {
       responseBodySize = HttpHeaderUtils.getContentLength(response.headers);
 
       return response;
+    } on DioException catch (e) {
+      requestHadException = true;
+      dioException = e;
+      rethrow;
     } catch (_) {
       requestHadException = true;
       rethrow;
@@ -57,8 +62,18 @@ class BreadcrumbClientAdapter implements HttpClientAdapter {
           HttpSanitizer.sanitizeUrl(options.uri.toString()) ?? UrlDetails();
 
       SentryLevel? level;
+
       if (requestHadException) {
         level = SentryLevel.error;
+        final dioExceptionResponse = dioException?.response;
+        if (dioExceptionResponse != null) {
+          statusCode = dioExceptionResponse.statusCode;
+          reason = dioExceptionResponse.statusMessage;
+          // ignore: invalid_use_of_internal_member
+          responseBodySize = HttpHeaderUtils.getContentLength(
+            dioExceptionResponse.headers.map,
+          );
+        }
       } else if (statusCode != null) {
         // ignore: invalid_use_of_internal_member
         level = getBreadcrumbLogLevelFromHttpStatusCode(statusCode);

packages/dio/test/breadcrumb_client_adapter_test.dart

@@ -1,5 +1,7 @@
 // ignore_for_file: deprecated_member_use
 
+import 'dart:typed_data';
+
 import 'package:dio/dio.dart';
 import 'package:mockito/mockito.dart';
 import 'package:sentry/sentry.dart';
@@ -148,6 +150,39 @@ void main() {
       expect(breadcrumb.data?['duration'], isNotNull);
     });
 
+    test('breadcrumb gets added when DioException with response is thrown',
+        () async {
+      final sut = fixture.getSut(
+        DioExceptionWithResponseAdapter(
+          statusCode: 404,
+          statusMessage: 'Not Found',
+          headers: {
+            'content-length': ['123'],
+          },
+        ),
+      );
+
+      try {
+        await sut.get<dynamic>('');
+        fail('Method did not throw');
+      } on DioException catch (_) {}
+
+      expect(fixture.hub.addBreadcrumbCalls.length, 1);
+
+      final breadcrumb = fixture.hub.addBreadcrumbCalls.first.crumb;
+
+      expect(breadcrumb.type, 'http');
+      expect(breadcrumb.data?['url'], 'https://example.com');
+      expect(breadcrumb.data?['method'], 'GET');
+      expect(breadcrumb.data?['http.query'], 'foo=bar');
+      expect(breadcrumb.data?['http.fragment'], 'baz');
+      expect(breadcrumb.level, SentryLevel.error);
+      expect(breadcrumb.data?['duration'], isNotNull);
+      expect(breadcrumb.data?['status_code'], 404);
+      expect(breadcrumb.data?['reason'], 'Not Found');
+      expect(breadcrumb.data?['response_body_size'], 123);
+    });
+
     test('close does get called for user defined client', () async {
       final mockHub = MockHub();
 
@@ -185,8 +220,45 @@ void main() {
 
 class CloseableMockClientAdapter extends Mock implements HttpClientAdapter {}
 
+class DioExceptionWithResponseAdapter implements HttpClientAdapter {
+  DioExceptionWithResponseAdapter({
+    required this.statusCode,
+    required this.statusMessage,
+    required this.headers,
+  });
+
+  final int statusCode;
+  final String statusMessage;
+  final Map<String, List<String>> headers;
+
+  @override
+  Future<ResponseBody> fetch(
+    RequestOptions options,
+    Stream<Uint8List>? requestStream,
+    Future<dynamic>? cancelFuture,
+  ) async {
+    final response = Response<dynamic>(
+      requestOptions: options,
+      statusCode: statusCode,
+      statusMessage: statusMessage,
+      headers: Headers.fromMap(headers),
+    );
+
+    throw DioException.badResponse(
+      requestOptions: options,
+      response: response,
+      statusCode: statusCode,
+    );
+  }
+
+  @override
+  void close({bool force = false}) {
+    // No-op for testing
+  }
+}
+
 class Fixture {
-  Dio getSut([MockHttpClientAdapter? client]) {
+  Dio getSut([HttpClientAdapter? client]) {
     final mc = client ?? getClient();
     final dio = Dio(
       BaseOptions(baseUrl: 'https://example.com?foo=bar#baz'),