Flutter

AllStak SDK for Flutter and Dart apps. Captures Flutter errors, unhandled Dart errors, logs, outbound HTTP requests, route breadcrumbs, and native crashes.

Install

flutter pub add allstak

Setup

import 'package:allstak/allstak.dart';
import 'package:flutter/material.dart';

void main() {
  AllStak.runApp(
    const AllStakConfig(
      apiKey: String.fromEnvironment('ALLSTAK_API_KEY'),
      environment: 'production',
      release: String.fromEnvironment('ALLSTAK_RELEASE'),
      service: 'mobile',
    ),
    () => runApp(const MyApp()),
  );
}

Run with:

flutter run \
  --dart-define=ALLSTAK_API_KEY=ask_live_xxx \
  [email protected]

Release identifier (automatic)

You can omit release entirely and let the SDK resolve it. Order, highest first:

1. Explicit release: you pass to AllStakConfig — always wins.
2. ALLSTAK_RELEASE dart-define — --dart-define=ALLSTAK_RELEASE=..., read at build time. This is the automatic mechanism.
3. SDK version (kAllStakSdkVersion) as a last resort, so release is never empty. (SDK version is not your app version — last resort only.)

Set autoDetectRelease: false to opt out of steps 2–3 (only an explicit release is ever sent).

Honest note on mobile. A shipped .ipa/.apk/web bundle has no .git directory and no git binary, so runtime git detection is impossible in production. Reading the app's store version at runtime would require a platform plugin (e.g. package_info_plus), which this SDK deliberately does not depend on to stay dependency-light. So the automatic mechanism is the build-time ALLSTAK_RELEASE dart-define. To get the real app version or a git SHA into events, pass it explicitly or via the dart-define, e.g.:

flutter build apk --dart-define=ALLSTAK_RELEASE=1.4.2+$(git rev-parse --short HEAD)

If your app already depends on package_info_plus, read the version there and pass it as release: (step 1) — the SDK won't add that dependency for you.

HTTP client

final client = AllStak.instance!.httpClient();
final response = await client.get(Uri.parse('https://api.example.com/orders'));

Manual capture

await AllStak.instance?.captureLog('info', 'checkout opened');
await AllStak.instance?.captureException(
  StateError('checkout failed'),
  stackTrace: StackTrace.current.toString(),
  context: {'screen': 'checkout'},
);
await AllStak.instance?.captureSpan(
  traceId: traceId,
  spanId: spanId,
  parentSpanId: parentSpanId,
  operation: 'http.client',
  description: 'GET https://api.example.com/orders',
  durationMs: 42,
  startTimeMillis: startMs,
  endTimeMillis: endMs,
);
await AllStak.instance?.flush();
await AllStak.instance?.close();
final diagnostics = AllStak.getDiagnostics();

captureSpan is the low-level API for completed custom spans. Trace and span IDs are normalized to W3C widths before send: 32 lowercase hex characters for traceId, 16 for spanId and parentSpanId.

diagnostics contains counters and queue sizes only: captured/sent/failed/ dropped/persisted/replayed events, retry/rate-limit counts, compression counters, breadcrumb count, active trace/span counts, and session recovery count. It never includes event payloads, headers, breadcrumbs, user data, or secrets.

Navigation breadcrumbs

MaterialApp(
  navigatorObservers: [AllStakNavigatorObserver()],
  home: const HomePage(),
);

Configuration

Native crash capture

Beyond Flutter/Dart errors and the platform uncaught-exception handlers, the SDK arms async-signal-safe POSIX signal handlers (SIGSEGV/SIGABRT/SIGBUS/SIGILL/ SIGFPE/SIGTRAP) so it captures force-unwrap traps, bad-pointer access, and NDK/native signal crashes. A minimal record is written to disk during the crash and shipped on the next launch marked native.crash=true.

• iOS works out of the box (signal handlers are pure-Swift in the plugin).
• Android signal/NDK capture requires opting into the bundled native library — set allstak.enableNdkCrashCapture=true in your app's gradle.properties (requires the Android NDK). Without it, the SDK still captures uncaught JVM exceptions; native signal capture is a graceful no-op.

On-device end-to-end delivery of native signal/NDK crashes requires real device/emulator verification.

Privacy

The SDK redacts common sensitive headers and fields. Avoid putting secrets in custom metadata.

Troubleshooting

• No events: confirm --dart-define=ALLSTAK_API_KEY=... is present for the target build.
• Native crashes missing: rebuild the native app after installing the package.
• Source maps missing: keep runtime release aligned with uploaded build artifacts.

Contributing and Support

• Report bugs with the GitHub bug report template: https://github.com/AllStak/allstak-flutter/issues/new/choose
• Open pull requests using the checklist in CONTRIBUTING.md.
• Report security vulnerabilities privately through SECURITY.md.

License

MIT