blob: ef43e3a5df1fcf74d78d2ba2dfc01a78499cd8ca [file] [log] [blame]
// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
import 'dart:async';
import 'dart:io';
import 'package:http/http.dart' as http;
import 'package:stack_trace/stack_trace.dart';
import 'package:usage/usage.dart';
// Reporting disabled until we're set up on the backend.
/// Crash backend host.
const String _crashServerHost = '';
/// Path to the crash servlet.
const String _crashEndpointPath = '/cr/report'; // or, staging_report
/// The field corresponding to the multipart/form-data file attachment where
/// crash backend expects to find the Dart stack trace.
const String _stackTraceFileField = 'DartError';
/// The name of the file attached as [stackTraceFileField].
/// The precise value is not important. It is ignored by the crash back end, but
/// it must be supplied in the request.
const String _stackTraceFilename = 'stacktrace_file';
/// Sends crash reports to Google.
/// Clients shouldn't extend, mixin or implement this class.
class CrashReportSender {
static final Uri _baseUri = new Uri(
scheme: 'https', host: _crashServerHost, path: _crashEndpointPath);
final String crashProductId;
final Analytics analytics;
final http.Client _httpClient;
/// Create a new [CrashReportSender], using the data from the given
/// [Analytics] instance.
{http.Client httpClient})
: _httpClient = httpClient ?? new http.Client();
/// Sends one crash report.
/// The report is populated from data in [error] and [stackTrace].
Future sendReport(dynamic error, {StackTrace stackTrace}) async {
if (!analytics.enabled || CRASH_REPORTING_DISABLED) {
try {
final Uri uri = _baseUri.replace(
queryParameters: <String, String>{
'product': analytics.trackingId,
'version': analytics.applicationVersion,
final http.MultipartRequest req = new http.MultipartRequest('POST', uri);
req.fields['uuid'] = analytics.clientId;
req.fields['product'] = crashProductId;
req.fields['version'] = analytics.applicationVersion;
req.fields['osName'] = Platform.operatingSystem;
req.fields['osVersion'] = Platform.operatingSystemVersion;
req.fields['type'] = 'DartError';
req.fields['error_runtime_type'] = '${error.runtimeType}';
final Chain chain = new Chain.parse(stackTrace.toString());
req.files.add(new http.MultipartFile.fromString(
_stackTraceFileField, chain.terse.toString(),
filename: _stackTraceFilename));
final http.StreamedResponse resp = await _httpClient.send(req);
if (resp.statusCode != 200) {
throw 'server responded with HTTP status code ${resp.statusCode}';
} on SocketException catch (error) {
throw 'network error while sending crash report: $error';
} catch (error, stackTrace) {
// If the sender itself crashes, just print.
throw 'exception while sending crash report: $error\n$stackTrace';
/// Closes the client and cleans up any resources associated with it. This
/// will close the associated [http.Client].
void dispose() {