feat: add messaging transport rollout

tests/application/test_messaging_intent_consumer.py

@@ -0,0 +1,132 @@
+"""Intent admission RPC handler + dedup tests (REQ-021/022/023, dcy-006).
+
+The handler calls IntentService.submit_*, so dedup uses the IntentStore
+(intent_log) gate (REQ-007). Two messages with the same correlation_id
+trigger exactly ONE slot transition (REQ-023 AC-1).
+"""
+from __future__ import annotations
+
+from datetime import date
+
+
+from trex_core.adapters.persistence.in_memory_intent_store import InMemoryIntentStore
+from trex_core.application.intents import IntentService
+from trex_core.application.messaging import RpcRequest
+from trex_core.application.messaging_handlers import make_intent_rpc_handler
+from trex_core.domain.slot import SlotService, SlotState
+from trex_core.domain.slot.in_memory_repository import InMemorySlotRepository
+
+DAY = date(2026, 6, 5)
+
+
+def _wire():
+    repo = InMemorySlotRepository()
+    svc = SlotService(repo)
+    intents = IntentService(svc, repo, InMemoryIntentStore())
+    svc.preallocate_daily_slots(DAY, 3)
+    return repo, svc, intents
+
+
+def _buy_req(intent_id: str, symbol: str = "005930") -> RpcRequest:
+    return RpcRequest(
+        payload={
+            "intent_type": "buy",
+            "intent_id": intent_id,
+            "trading_date": DAY.isoformat(),
+            "symbol": symbol,
+            "qty": 10,
+        },
+        correlation_id=intent_id,
+    )
+
+
+def test_buy_admission_returns_admitted_and_transitions_slot():
+    repo, _, intents = _wire()
+    handler = make_intent_rpc_handler(intents)
+    resp = handler(_buy_req("buy-1"))
+    assert resp.payload["status"] == "admitted"
+    assert resp.payload["slot_id"]
+    from uuid import UUID
+    slot = repo.fetch_slot(UUID(resp.payload["slot_id"]))
+    assert slot.status is SlotState.PENDING_BUY and slot.symbol == "005930"
+
+
+def test_duplicate_correlation_id_dedups_via_intent_log():
+    """REQ-023 AC-1: same intent_id ⇒ slot transition exactly once."""
+    repo, _, intents = _wire()
+    handler = make_intent_rpc_handler(intents)
+    r1 = handler(_buy_req("buy-dup"))
+    r2 = handler(_buy_req("buy-dup"))
+    assert r1.payload == r2.payload
+    pending = [s for s in repo.list_slots(DAY) if s.status is SlotState.PENDING_BUY]
+    assert len(pending) == 1
+
+
+def test_buy_rejected_when_no_idle_slot():
+    repo, _, intents = _wire()
+    handler = make_intent_rpc_handler(intents)
+    for i in range(3):
+        assert handler(_buy_req(f"buy-{i}")).payload["status"] == "admitted"
+    resp = handler(_buy_req("overflow"))
+    assert resp.payload["status"] == "rejected"
+    assert resp.payload["reason"] == "no_idle_slot"
+
+
+def test_sell_admission_from_holding():
+    repo, svc, intents = _wire()
+    handler = make_intent_rpc_handler(intents)
+    sid = handler(_buy_req("buy-h")).payload["slot_id"]
+    from uuid import UUID
+    svc.transit_slot(UUID(sid), SlotState.PENDING_BUY, SlotState.HOLDING,
+                     reason="filled", actor="t")
+    resp = handler(RpcRequest(
+        payload={"intent_type": "sell", "intent_id": "sell-h", "slot_id": sid},
+        correlation_id="sell-h",
+    ))
+    assert resp.payload["status"] == "admitted"
+    assert repo.fetch_slot(UUID(sid)).status is SlotState.PENDING_SELL
+
+
+def test_bad_payload_returns_rejected_not_exception():
+    """Handler must not raise — bad input ⇒ structured rejection."""
+    _, _, intents = _wire()
+    handler = make_intent_rpc_handler(intents)
+    # missing slot_id for sell
+    resp = handler(RpcRequest(
+        payload={"intent_type": "sell", "intent_id": "bad"},
+        correlation_id="bad",
+    ))
+    assert resp.payload["status"] == "rejected"
+    assert resp.payload["reason"].startswith("bad_request:")
+
+
+def test_unknown_intent_type_rejected():
+    _, _, intents = _wire()
+    handler = make_intent_rpc_handler(intents)
+    resp = handler(RpcRequest(
+        payload={"intent_type": "ping", "intent_id": "x"},
+        correlation_id="x",
+    ))
+    assert resp.payload["status"] == "rejected"
+    assert "unknown_intent_type" in resp.payload["reason"]
+
+
+def test_correlation_id_is_used_as_intent_id_when_missing_in_payload():
+    """The transport's correlation_id is the canonical idempotency key."""
+    repo, _, intents = _wire()
+    handler = make_intent_rpc_handler(intents)
+    req = RpcRequest(
+        payload={
+            "intent_type": "buy",
+            "trading_date": DAY.isoformat(),
+            "symbol": "005930",
+            "qty": 5,
+        },
+        correlation_id="cid-only",
+    )
+    r1 = handler(req)
+    r2 = handler(req)
+    assert r1.payload["status"] == "admitted"
+    assert r1.payload == r2.payload
+    pending = [s for s in repo.list_slots(DAY) if s.status is SlotState.PENDING_BUY]
+    assert len(pending) == 1