Commit Graph

2 Commits

Author SHA1 Message Date
1b7703f07b feat(IIO)!: BREAKING CHANGE - Callback-based message dispatch
## Breaking Change

IIO API redesigned from manual pull+if-forest to callback dispatch.
All modules must update their subscribe() calls to pass handlers.

### Before (OLD API)
```cpp
io->subscribe("input:mouse");

void process(...) {
    while (io->hasMessages()) {
        auto msg = io->pullMessage();
        if (msg.topic == "input:mouse") {
            handleMouse(msg);
        } else if (msg.topic == "input:keyboard") {
            handleKeyboard(msg);
        }
    }
}
```

### After (NEW API)
```cpp
io->subscribe("input:mouse", [this](const Message& msg) {
    handleMouse(msg);
});

void process(...) {
    while (io->hasMessages()) {
        io->pullAndDispatch();  // Callbacks invoked automatically
    }
}
```

## Changes

**Core API (include/grove/IIO.h)**
- Added: `using MessageHandler = std::function<void(const Message&)>`
- Changed: `subscribe()` now requires `MessageHandler` callback parameter
- Changed: `subscribeLowFreq()` now requires `MessageHandler` callback
- Removed: `pullMessage()`
- Added: `pullAndDispatch()` - pulls and auto-dispatches to handlers

**Implementation (src/IntraIO.cpp)**
- Store callbacks in `Subscription.handler`
- `pullAndDispatch()` matches topic against ALL subscriptions (not just first)
- Fixed: Regex pattern compilation supports both wildcards (*) and regex (.*)
- Performance: ~1000 msg/s throughput (unchanged from before)

**Files Updated**
- 31 test/module files migrated to callback API (via parallel agents)
- 8 documentation files updated (DEVELOPER_GUIDE, USER_GUIDE, module READMEs)

## Bugs Fixed During Migration

1. **pullAndDispatch() early return bug**: Was only calling FIRST matching handler
   - Fix: Loop through ALL subscriptions, invoke all matching handlers

2. **Regex pattern compilation bug**: Pattern "player:.*" failed to match
   - Fix: Detect ".*" in pattern → use as regex, otherwise escape and convert wildcards

## Testing

 test_11_io_system: PASSED (IIO pub/sub, pattern matching, batching)
 test_threaded_module_system: 6/6 PASSED
 test_threaded_stress: 5/5 PASSED (50 modules, 100x reload, concurrent ops)
 test_12_datanode: PASSED
 10 TopicTree scenarios: 10/10 PASSED
 benchmark_e2e: ~1000 msg/s throughput

Total: 23+ tests passing

## Performance Impact

No performance regression from callback dispatch:
- IIO throughput: ~1000 msg/s (same as before)
- ThreadedModuleSystem: Speedup ~1.0x (barrier pattern expected)

## Migration Guide

For all modules using IIO:

1. Update subscribe() calls to include handler lambda
2. Replace pullMessage() loops with pullAndDispatch()
3. Move topic-specific logic from if-forest into callbacks

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2026-01-19 14:19:27 +07:00
ddbed30ed7 feat: Add Scenario 11 IO System test & fix IntraIO routing architecture
Implémentation complète du scénario 11 (IO System Stress Test) avec correction majeure de l'architecture de routing IntraIO.

## Nouveaux Modules de Test (Scenario 11)
- ProducerModule: Publie messages pour tests IO
- ConsumerModule: Consomme et valide messages reçus
- BroadcastModule: Test multi-subscriber broadcasting
- BatchModule: Test low-frequency batching
- IOStressModule: Tests de charge concurrents

## Test d'Intégration
- test_11_io_system.cpp: 6 tests validant:
  * Basic Publish-Subscribe
  * Pattern Matching avec wildcards
  * Multi-Module Routing (1-to-many)
  * Low-Frequency Subscriptions (batching)
  * Backpressure & Queue Overflow
  * Thread Safety (concurrent pub/pull)

## Fix Architecture Critique: IntraIO Routing
**Problème**: IntraIO::publish() et subscribe() n'utilisaient PAS IntraIOManager pour router entre modules.

**Solution**: Utilisation de JSON comme format de transport intermédiaire
- IntraIO::publish() → extrait JSON → IntraIOManager::routeMessage()
- IntraIO::subscribe() → enregistre au IntraIOManager::registerSubscription()
- IntraIOManager::routeMessage() → copie JSON pour chaque subscriber → deliverMessage()

**Bénéfices**:
-  Routing centralisé fonctionnel
-  Support 1-to-many (copie JSON au lieu de move unique_ptr)
-  Pas besoin d'implémenter IDataNode::clone()
-  Compatible futur NetworkIO (JSON sérialisable)

## Modules Scenario 13 (Cross-System)
- ConfigWatcherModule, PlayerModule, EconomyModule, MetricsModule
- test_13_cross_system.cpp (stub)

## Documentation
- CLAUDE_NEXT_SESSION.md: Instructions détaillées pour build/test

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-19 11:43:08 +08:00