DioEventProcessor: Append http response body

CHANGELOG.md

@@ -8,6 +8,8 @@
 
 [Trace origin](https://develop.sentry.dev/sdk/performance/trace-origin/) indicates what created a trace or a span. Not all transactions and spans contain enough information to tell whether the user or what precisely in the SDK created it. Origin solves this problem. The SDK now sends origin for transactions and spans.
 
+- Append http response body ([#1557](https://github.com/getsentry/sentry-dart/pull/1557))
+
 ### Dependencies
 
 - Bump Cocoa SDK from v8.8.0 to v8.9.1 ([#1553](https://github.com/getsentry/sentry-dart/pull/1553))

dio/lib/src/dio_event_processor.dart

@@ -1,5 +1,7 @@
 // ignore_for_file: deprecated_member_use
 
+import 'dart:convert';
+
 import 'package:dio/dio.dart';
 import 'package:sentry/sentry.dart';
 
@@ -62,7 +64,7 @@ class DioEventProcessor implements EventProcessor {
   }
 
   /// Returns the request data, if possible according to the users settings.
-  Object? _getRequestData(dynamic data) {
+  Object? _getRequestData(Object? data) {
     if (!_options.sendDefaultPii) {
       return null;
     }
@@ -87,8 +89,76 @@ class DioEventProcessor implements EventProcessor {
 
     return SentryResponse(
       headers: _options.sendDefaultPii ? headers : null,
-      bodySize: dioError.response?.data?.length as int?,
+      bodySize: _getBodySize(
+        dioError.response?.data,
+        dioError.requestOptions.responseType,
+      ),
       statusCode: response?.statusCode,
+      data: _getResponseData(
+        dioError.response?.data,
+        dioError.requestOptions.responseType,
+      ),
     );
   }
+
+  /// Returns the response data, if possible according to the users settings.
+  Object? _getResponseData(Object? data, ResponseType responseType) {
+    if (!_options.sendDefaultPii) {
+      return null;
+    }
+    if (data == null) {
+      return null;
+    }
+    switch (responseType) {
+      case ResponseType.json:
+        final js = json.encode(data);
+        if (_options.maxResponseBodySize.shouldAddBody(js.codeUnits.length)) {
+          return data;
+        }
+        break;
+      case ResponseType.stream:
+        break; // No support for logging stream body.
+      case ResponseType.plain:
+        if (data is String &&
+            _options.maxResponseBodySize.shouldAddBody(data.codeUnits.length)) {
+          return data;
+        }
+        break;
+      case ResponseType.bytes:
+        if (data is List<int> &&
+            _options.maxResponseBodySize.shouldAddBody(data.length)) {
+          return data;
+        }
+        break;
+    }
+    return null;
+  }
+
+  int? _getBodySize(Object? data, ResponseType responseType) {
+    if (data == null) {
+      return null;
+    }
+    switch (responseType) {
+      case ResponseType.json:
+        return json.encode(data).codeUnits.length;
+      case ResponseType.stream:
+        if (data is String) {
+          return data.length;
+        } else {
+          return null;
+        }
+      case ResponseType.plain:
+        if (data is String) {
+          return data.codeUnits.length;
+        } else {
+          return null;
+        }
+      case ResponseType.bytes:
+        if (data is List<int>) {
+          return data.length;
+        } else {
+          return null;
+        }
+    }
+  }
 }

dio/test/dio_event_processor_test.dart

@@ -132,6 +132,64 @@ void main() {
 
       expect(processedEvent.request?.headers, <String, String>{});
     });
+
+    test('request body is included according to $MaxResponseBodySize',
+        () async {
+      final scenarios = [
+        // never
+        MaxBodySizeTestConfig(MaxRequestBodySize.never, 0, false),
+        MaxBodySizeTestConfig(MaxRequestBodySize.never, 4001, false),
+        MaxBodySizeTestConfig(MaxRequestBodySize.never, 10001, false),
+        // always
+        MaxBodySizeTestConfig(MaxRequestBodySize.always, 0, true),
+        MaxBodySizeTestConfig(MaxRequestBodySize.always, 4001, true),
+        MaxBodySizeTestConfig(MaxRequestBodySize.always, 10001, true),
+        // small
+        MaxBodySizeTestConfig(MaxRequestBodySize.small, 0, true),
+        MaxBodySizeTestConfig(MaxRequestBodySize.small, 4000, true),
+        MaxBodySizeTestConfig(MaxRequestBodySize.small, 4001, false),
+        // medium
+        MaxBodySizeTestConfig(MaxRequestBodySize.medium, 0, true),
+        MaxBodySizeTestConfig(MaxRequestBodySize.medium, 4001, true),
+        MaxBodySizeTestConfig(MaxRequestBodySize.medium, 10000, true),
+        MaxBodySizeTestConfig(MaxRequestBodySize.medium, 10001, false),
+      ];
+
+      for (final scenario in scenarios) {
+        final sut = fixture.getSut(
+          sendDefaultPii: true,
+          captureFailedRequests: true,
+          maxRequestBodySize: scenario.maxBodySize,
+        );
+
+        final data = List.generate(scenario.contentLength, (index) => 0);
+        final request = requestOptions.copyWith(method: 'POST', data: data);
+        final throwable = Exception();
+        final dioError = DioError(
+          requestOptions: request,
+          response: Response<dynamic>(
+            requestOptions: request,
+            statusCode: 401,
+            data: data,
+          ),
+        );
+        final event = SentryEvent(
+          throwable: throwable,
+          exceptions: [
+            fixture.sentryError(throwable),
+            fixture.sentryError(dioError)
+          ],
+        );
+        final processedEvent = sut.apply(event) as SentryEvent;
+        final capturedRequest = processedEvent.request;
+
+        expect(capturedRequest, isNotNull);
+        expect(
+          capturedRequest?.data,
+          scenario.shouldBeIncluded ? isNotNull : isNull,
+        );
+      }
+    });
   });
 
   group('response', () {
@@ -140,6 +198,7 @@ void main() {
 
       final request = requestOptions.copyWith(
         method: 'POST',
+        responseType: ResponseType.plain,
       );
       final throwable = Exception();
       final dioError = DioError(
@@ -181,6 +240,7 @@ void main() {
 
       final request = requestOptions.copyWith(
         method: 'POST',
+        responseType: ResponseType.plain,
       );
       final throwable = Exception();
       final dioError = DioError(
@@ -211,6 +271,121 @@ void main() {
       expect(processedEvent.contexts.response?.statusCode, 200);
       expect(processedEvent.contexts.response?.headers, <String, String>{});
     });
+
+    test('response body is included according to $MaxResponseBodySize',
+        () async {
+      final scenarios = [
+        // never
+        MaxBodySizeTestConfig(MaxResponseBodySize.never, 0, false),
+        MaxBodySizeTestConfig(MaxResponseBodySize.never, 4001, false),
+        MaxBodySizeTestConfig(MaxResponseBodySize.never, 10001, false),
+        // always
+        MaxBodySizeTestConfig(MaxResponseBodySize.always, 0, true),
+        MaxBodySizeTestConfig(MaxResponseBodySize.always, 4001, true),
+        MaxBodySizeTestConfig(MaxResponseBodySize.always, 10001, true),
+        // small
+        MaxBodySizeTestConfig(MaxResponseBodySize.small, 0, true),
+        MaxBodySizeTestConfig(MaxResponseBodySize.small, 4000, true),
+        MaxBodySizeTestConfig(MaxResponseBodySize.small, 4001, false),
+        // medium
+        MaxBodySizeTestConfig(MaxResponseBodySize.medium, 0, true),
+        MaxBodySizeTestConfig(MaxResponseBodySize.medium, 4001, true),
+        MaxBodySizeTestConfig(MaxResponseBodySize.medium, 10000, true),
+        MaxBodySizeTestConfig(MaxResponseBodySize.medium, 10001, false),
+      ];
+
+      for (final scenario in scenarios) {
+        final sut = fixture.getSut(
+          sendDefaultPii: true,
+          captureFailedRequests: true,
+          maxResponseBodySize: scenario.maxBodySize,
+        );
+
+        final data = List.generate(scenario.contentLength, (index) => 0);
+        final request = requestOptions.copyWith(
+          method: 'POST',
+          data: data,
+          responseType: ResponseType.bytes,
+        );
+        final throwable = Exception();
+        final dioError = DioError(
+          requestOptions: request,
+          response: Response<dynamic>(
+            requestOptions: request,
+            statusCode: 401,
+            data: data,
+          ),
+        );
+        final event = SentryEvent(
+          throwable: throwable,
+          exceptions: [
+            fixture.sentryError(throwable),
+            fixture.sentryError(dioError)
+          ],
+        );
+        final processedEvent = sut.apply(event) as SentryEvent;
+        final capturedResponse = processedEvent.contexts.response;
+
+        expect(capturedResponse, isNotNull);
+        expect(
+          capturedResponse?.data,
+          scenario.shouldBeIncluded ? isNotNull : isNull,
+        );
+      }
+    });
+
+    test('data supports all response body types', () async {
+      final dataByType = {
+        ResponseType.plain: ['plain'],
+        ResponseType.bytes: [
+          [1337]
+        ],
+        ResponseType.json: [
+          9001,
+          null,
+          'string',
+          true,
+          ['list'],
+          {'map-key': 'map-value'},
+        ]
+      };
+
+      for (final entry in dataByType.entries) {
+        final responseType = entry.key;
+
+        for (final data in entry.value) {
+          final request = requestOptions.copyWith(
+            method: 'POST',
+            data: data,
+            responseType: responseType,
+          );
+          final throwable = Exception();
+          final dioError = DioError(
+            requestOptions: request,
+            response: Response<dynamic>(
+              requestOptions: request,
+              statusCode: 401,
+              data: data,
+            ),
+          );
+
+          final sut = fixture.getSut(sendDefaultPii: true);
+
+          final event = SentryEvent(
+            throwable: throwable,
+            exceptions: [
+              fixture.sentryError(throwable),
+              fixture.sentryError(dioError)
+            ],
+          );
+          final processedEvent = sut.apply(event) as SentryEvent;
+          final capturedResponse = processedEvent.contexts.response;
+
+          expect(capturedResponse, isNotNull);
+          expect(capturedResponse?.data, data);
+        }
+      }
+    });
   });
 
   test('$DioEventProcessor adds chained stacktraces', () {
@@ -266,12 +441,18 @@ class Fixture {
   // ignore: invalid_use_of_internal_member
   SentryExceptionFactory get exceptionFactory => options.exceptionFactory;
 
-  DioEventProcessor getSut({bool sendDefaultPii = false}) {
+  DioEventProcessor getSut({
+    bool sendDefaultPii = false,
+    bool captureFailedRequests = true,
+    MaxRequestBodySize maxRequestBodySize = MaxRequestBodySize.always,
+    MaxResponseBodySize maxResponseBodySize = MaxResponseBodySize.always,
+  }) {
     return DioEventProcessor(
       options
         ..sendDefaultPii = sendDefaultPii
-        ..maxRequestBodySize = MaxRequestBodySize.always
-        ..maxResponseBodySize = MaxResponseBodySize.always,
+        ..captureFailedRequests = captureFailedRequests
+        ..maxRequestBodySize = maxRequestBodySize
+        ..maxResponseBodySize = maxResponseBodySize,
     );
   }
 
@@ -283,3 +464,17 @@ class Fixture {
     );
   }
 }
+
+class MaxBodySizeTestConfig<T> {
+  MaxBodySizeTestConfig(
+    this.maxBodySize,
+    this.contentLength,
+    this.shouldBeIncluded,
+  );
+
+  final T maxBodySize;
+  final int contentLength;
+  final bool shouldBeIncluded;
+
+  Matcher get matcher => shouldBeIncluded ? isNotNull : isNull;
+}

flutter/example/lib/main.dart

@@ -2,7 +2,6 @@
 
 import 'dart:async';
 import 'dart:convert';
-import 'dart:io' show Platform;
 
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';