titan_colossus 1.2.0

Enterprise performance monitoring for Titan. Frame metrics, page load timing, memory leak detection, rebuild tracking, and Lens integration.

Titan Colossus

Enterprise-grade performance monitoring for the Titan ecosystem.

Colossus — named after the Colossus of Rhodes, a representation of the Titan Helios — stands watch over your app's performance, seeing every frame, every navigation, every allocation.

Features

Feature	Titan Name	What it does
Frame Monitoring	Pulse	FPS, jank detection, build/raster timing
Page Load Timing	Stride	Time-to-first-paint per route navigation
Memory Monitoring	Vessel	Pillar count, DI instance tracking, leak detection
Rebuild Tracking	Echo	Widget rebuild counting via wrapper widget
Performance Alerts	Tremor	Configurable threshold alerts via Herald
Performance Reports	Decree	Aggregated metrics with health verdict
Report Export	Inscribe	Export as Markdown, JSON, or HTML
Gesture Recording	Shade	Record user interactions as replayable macros
Gesture Replay	Phantom	Replay recorded sessions with synthetic events
Debug Overlay	Lens	In-app debug overlay with extensible plugin tabs
Lens Tabs	Lens Tab	Auto-registered "Perf" and "Shade" tabs in Lens
Route Integration	Atlas Observer	Automatic page load timing via Atlas

Quick Start

1. Add dependency

dev_dependencies:
  titan_colossus: ^1.0.0

2. Initialize via plugin (recommended)

import 'package:titan_colossus/titan_colossus.dart';

void main() {
  runApp(
    Beacon(
      pillars: [MyPillar.new],
      plugins: [
        if (kDebugMode) ColossusPlugin(
          tremors: [Tremor.fps(), Tremor.leaks()],
        ),
      ],
      child: MaterialApp.router(routerConfig: atlas.config),
    ),
  );
}

One line to add, one line to remove. ColossusPlugin handles Colossus.init(), wraps with Lens and ShadeListener, and calls Colossus.shutdown() on dispose.

Manual initialization (alternative)

import 'package:titan_colossus/titan_colossus.dart';

void main() {
  if (kDebugMode) {
    Colossus.init(
      tremors: [
        Tremor.fps(),
        Tremor.leaks(),
        Tremor.pageLoad(),
      ],
    );
  }

  runApp(
    Lens(
      enabled: kDebugMode,
      child: MaterialApp.router(routerConfig: atlas.config),
    ),
  );
}

That's it. Colossus auto-registers its Lens tab and begins monitoring.

The Colossus Lexicon

Component	Symbol	Purpose
Colossus	🏛️	Main Pillar — singleton orchestrator
Pulse	💓	Frame rendering metrics
Stride	🦶	Page load timing
Vessel	🏺	Memory monitoring & leak detection
Echo	🔁	Widget rebuild tracking
Tremor	🌍	Performance alert threshold
Decree	📜	Aggregated performance report
Inscribe	✍️	Export decree as Markdown, JSON, or HTML
InscribeIO	💾	Save export files to disk
Mark	📍	Base performance measurement
FrameMark	🎞️	Single frame timing
PageLoadMark	📄	Single page load timing
MemoryMark	🧠	Memory state snapshot
RebuildMark	♻️	Widget rebuild snapshot
LeakSuspect	💧	Suspected memory leak
Shade	👤	Gesture recording controller
Imprint	👣	Single recorded pointer event
ShadeSession	📼	Complete recorded interaction session
Phantom	👻	Replays sessions via handlePointerEvent
PhantomResult	📊	Replay outcome statistics
ShadeListener	👂	Transparent widget capturing pointer events
ColossusPlugin	🔌	One-line Beacon plugin for full Colossus integration

Usage

Pulse — Frame Monitoring

Pulse automatically tracks every frame via Flutter's addTimingsCallback:

final colossus = Colossus.instance;
print('FPS: ${colossus.pulse.fps}');
print('Jank rate: ${colossus.pulse.jankRate}%');
print('Avg build: ${colossus.pulse.avgBuildTime.inMicroseconds}µs');

Stride — Page Load Timing

Automatic with Atlas:

final atlas = Atlas(
  passages: [...],
  observers: [ColossusAtlasObserver()],
);

Manual timing:

final sw = Stopwatch()..start();
await loadHeavyData();
sw.stop();
Colossus.instance.stride.record('/data', sw.elapsed);

Vessel — Memory & Leak Detection

Vessel periodically checks Titan's DI registry for Pillar lifecycle anomalies:

Colossus.init(
  vesselConfig: VesselConfig(
    leakThreshold: Duration(minutes: 3),
    exemptTypes: {'AuthPillar', 'AppPillar'}, // Long-lived, not leaks
  ),
);

Echo — Rebuild Tracking

Wrap widgets to track their rebuild count:

Echo(
  label: 'QuestList',
  child: QuestListWidget(),
)

View rebuild data in the Lens "Perf" tab or via code:

final rebuilds = Colossus.instance.rebuildsPerWidget;
print(rebuilds); // {QuestList: 42, HeroProfile: 7}

Tremor — Performance Alerts

Configure alerts that emit Herald events when thresholds are breached:

Colossus.init(
  tremors: [
    Tremor.fps(threshold: 50),                          // FPS < 50
    Tremor.jankRate(threshold: 10),                      // > 10% jank
    Tremor.pageLoad(threshold: Duration(seconds: 1)),    // > 1s load
    Tremor.memory(maxPillars: 30),                       // > 30 Pillars
    Tremor.rebuilds(threshold: 100, widget: 'QuestList'),// > 100 rebuilds
    Tremor.leaks(),                                      // Any leak suspect
  ],
);

// Listen for alerts via Herald
Herald.on<ColossusTremor>((event) {
  print('⚠️ ${event.message}');
});

Decree — Performance Reports

Generate a comprehensive performance report:

final report = Colossus.instance.decree();

print(report.health);    // PerformanceHealth.good
print(report.summary);   // Full formatted report

// Drill into specifics
print(report.avgFps);
print(report.jankRate);
print(report.slowestPageLoad?.path);
print(report.topRebuilders(5));

Inscribe — Export Reports

Export the Decree as Markdown, JSON, or a self-contained HTML dashboard:

final decree = Colossus.instance.decree();

// Markdown — great for GitHub issues, PRs, documentation
final md = Inscribe.markdown(decree);

// JSON — great for CI pipelines, dashboards, data analysis
final json = Inscribe.json(decree);

// HTML — self-contained visual dashboard (no external deps)
final html = Inscribe.html(decree);

Convenience methods on Colossus:

final md   = Colossus.instance.inscribeMarkdown();
final json = Colossus.instance.inscribeJson();
final html = Colossus.instance.inscribeHtml();

Save to Disk

Use InscribeIO to persist reports to the file system (mobile, desktop, server — not web):

// Save individual formats
final path = await InscribeIO.saveHtml(decree, directory: '/tmp');
print('Report saved to $path');

// Save all three formats at once
final result = await InscribeIO.saveAll(decree, directory: '/reports');
print(result.markdown); // /reports/colossus-decree-20250115-100530.md
print(result.json);     // /reports/colossus-decree-20250115-100530.json
print(result.html);     // /reports/colossus-decree-20250115-100530.html

Lens Integration

Colossus auto-registers two tabs in the Lens debug overlay:

Perf tab with sub-tabs:

• Pulse — Real-time FPS, jank rate, frame bar chart
• Stride — Page load history with timing
• Vessel — Pillar count, instance count, leak suspects
• Echo — Widget rebuild counts sorted by frequency
• Export — Copy/save reports in Markdown, JSON, HTML

Shade tab with controls for:

• Starting/stopping gesture recording
• Viewing last recorded session info
• Replaying sessions with progress tracking
• Viewing replay results

Shade — Gesture Recording & Replay

Record real user interactions, then replay them as automated macros:

final shade = Colossus.instance.shade;

// Start recording
shade.startRecording(name: 'checkout_flow');

// ... user interacts with the app ...

// Stop and get the session
final session = shade.stopRecording();
print('Recorded ${session.eventCount} events');

// Save for later
final json = session.toJson();

// Replay while monitoring performance
final result = await Colossus.instance.replaySession(session);
final decree = Colossus.instance.decree();
print(decree.summary);

Wrap your app with ShadeListener to capture all pointer events:

ShadeListener(
  shade: Colossus.instance.shade,
  child: MaterialApp(...),
)

Text Input Recording

For text input recording and replay, use Spark's useTextController hook. When Colossus.init() is called, it automatically registers a factory that creates ShadeTextController instances — recording-aware controllers that capture every text change during a Shade recording session.

// In a Spark widget — text input is automatically recorded
class MyForm extends Spark {
  @override
  Widget build(BuildContext context) {
    final nameController = useTextController(fieldId: 'user_name');
    final emailController = useTextController(fieldId: 'user_email');

    return Column(
      children: [
        TextField(controller: nameController),
        TextField(controller: emailController),
      ],
    );
  }
}

The fieldId parameter enables accurate text replay — Phantom matches recorded text events to the correct field by ID. Without fieldId, Phantom falls back to injecting text into the currently focused field.

Ecosystem Integration

System	Integration
Titan DI	Self-registers via Titan.put()
Herald	Emits ColossusTremor events for alerts
Chronicle	Logs performance events and alerts
Vigil	Reports alert violations with severity
Lens	Auto-registered "Perf" debug tab
Atlas	ColossusAtlasObserver for route timing

Architecture

┌─────────────────────────────────────────────┐
│                 Colossus                     │
│              (Pillar singleton)              │
├──────────┬──────────┬──────────┬────────────┤
│  Pulse   │  Stride  │  Vessel  │   Echo     │
│  (FPS)   │ (Loads)  │ (Memory) │ (Rebuilds) │
├──────────┴──────────┴──────────┴────────────┤
│        Shade         │       Inscribe       │
│  (Record & Replay)   │  (Export Reports)    │
├──────────────────────┴──────────────────────┤
│              Tremor Engine                   │
│        (Threshold evaluation loop)           │
├──────────┬──────────┬──────────┬────────────┤
│  Herald  │Chronicle │  Vigil   │   Lens     │
│ (Events) │ (Logs)   │ (Errors) │  (UI Tab)  │
└──────────┴──────────┴──────────┴────────────┘

License

MIT — see LICENSE.