Migration Planning: Classic → Adaptive

// Adaptive side: monitor Classic ECU health during migration phase
// If Classic goes silent → Adaptive takes over the function

ara::core::Result ClassicFallbackMonitor::CheckClassicHealth()
{
    auto lastClassicMsg = classicSignalProxy_->LastMessageTimestamp();
    auto now = ara::core::SteadyClock::now();
    auto age = std::chrono::duration_cast(
                   now - lastClassicMsg).count();

    if (age > CLASSIC_TIMEOUT_MS) {  /* e.g., 500 ms */
        LogWarn() << "Classic ECU silent for " << age << "ms — Adaptive taking over";
        isAdaptivePrimary_ = true;
    }
    return ara::core::Result{};
}

#!/bin/bash
# Gate check before Classic ECU decommission
echo "=== Classic → Adaptive Migration Validation Gate ==="

# 1. Adaptive function has passed full vehicle system test
grep "SYSTEM_TEST_PASS" migration_evidence.log ||   { echo "FAIL: Full vehicle system test not completed"; exit 1; }

# 2. Fallback duration: Adaptive running as primary for ≥ 500 km
MILEAGE=$(grep "ADAPTIVE_PRIMARY_KM" migration_evidence.log | awk '{print $2}')
[ "$MILEAGE" -ge 500 ] ||   { echo "FAIL: Only ${MILEAGE}km in Adaptive-primary mode (need 500km)"; exit 1; }

# 3. No safety-relevant DTC recorded during Adaptive-primary operation
DTC_COUNT=$(grep "SAFETY_DTC_DURING_ADAPTIVE" migration_evidence.log | wc -l)
[ "$DTC_COUNT" -eq 0 ] ||   { echo "FAIL: ${DTC_COUNT} safety DTCs during Adaptive-primary operation"; exit 1; }

echo "All migration gates passed — Classic ECU decommission approved"