Function demo_3_constraint_violation

demo.py:222–265

()

# =============================================================================

def demo_3_constraint_violation():
    print("\n" + "=" * 60)
    print("Demo 3: Constraint Violation - Length and Forbidden Phrase")
    print("=" * 60)

    schema = ResponseSchema(
        max_length=300,
        min_length=20,
        forbidden_phrases=["I cannot", "As an AI", "I am unable"],
    )
    config = ControlLayerConfig(total_tokens=800, max_attempts=3, base_delay_ms=50)

    responses_seq = [
        LONG_RESPONSES[0],
        "I cannot provide that information.",
        GOOD_TEXT_RESPONSES[0],
    ]
    llm = make_deterministic_llm(responses_seq)
    layer = ControlLayer(
        llm_fn=llm,
        system_prompt="You are a concise technical assistant.",
        schema=schema,
        config=config,
    )
    layer.register_fallback(
        "template",
        lambda q: "Unable to generate a compliant response. Please rephrase your query.",
    )

    packet = layer.run(
        user_input="Explain what a control layer does in an LLM system.",
        constraints=[
            "Keep your response under 300 characters.",
            "Do not use refusal phrases.",
        ],
    )

    print(f"  Final outcome:   {'PASSED' if packet.validation.passed else 'FAILED'}")
    print(f"  Attempts used:   {packet.attempts}")
    print(f"  Strategy:        {packet.strategy_used.value}")
    print(f"  Total latency:   {packet.total_latency_ms:.1f}ms")
    print(f"  Response length: {len(packet.response)} chars")
    print(f"  Response:        {packet.response[:120]}...")
    return packet, layer.audit


# =============================================================================