From b0155830f29a0cb4ec2128ed42a91d52e8374d2c Mon Sep 17 00:00:00 2001
From: gahusb <bgg8988@gmail.com>
Date: Fri, 10 Jul 2026 10:21:03 +0900
Subject: [PATCH] =?UTF-8?q?feat(naver-fetch):=20NAS=20realestate=20?=
 =?UTF-8?q?=ED=81=B4=EB=9D=BC=EC=9D=B4=EC=96=B8=ED=8A=B8=20(targets/ingest?=
 =?UTF-8?q?)?=
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---
 services/naver-fetch/nas_client.py            | 48 +++++++++++++++++++
 services/naver-fetch/tests/test_nas_client.py | 41 ++++++++++++++++
 2 files changed, 89 insertions(+)
 create mode 100644 services/naver-fetch/nas_client.py
 create mode 100644 services/naver-fetch/tests/test_nas_client.py

diff --git a/services/naver-fetch/nas_client.py b/services/naver-fetch/nas_client.py
new file mode 100644
index 0000000..deb535f
--- /dev/null
+++ b/services/naver-fetch/nas_client.py
@@ -0,0 +1,48 @@
+"""NAS realestate 내부 계약 — X-Internal-Key + retry."""
+from __future__ import annotations
+
+import asyncio
+import logging
+
+import httpx
+
+logger = logging.getLogger(__name__)
+
+_MAX_ATTEMPTS = 3
+_RETRY_STATUSES = {429, 500, 502, 503, 504}
+
+
+class NASClient:
+    def __init__(self, base_url: str, api_key: str, timeout: float = 15.0):
+        self._base_url = base_url.rstrip("/")
+        self._api_key = api_key
+        self._client = httpx.AsyncClient(timeout=timeout)
+
+    async def close(self) -> None:
+        await self._client.aclose()
+
+    async def get_targets(self) -> dict:
+        return await self._request("GET", "/api/internal/realestate/targets")
+
+    async def post_ingest(self, fetched_at: str, batches: list[dict]) -> dict:
+        return await self._request(
+            "POST", "/api/internal/realestate/listings-ingest",
+            json={"fetched_at": fetched_at, "batches": batches})
+
+    async def _request(self, method: str, path: str, **kwargs) -> dict:
+        url = f"{self._base_url}{path}"
+        headers = {"X-Internal-Key": self._api_key}
+        for attempt in range(_MAX_ATTEMPTS):
+            try:
+                resp = await self._client.request(method, url, headers=headers, **kwargs)
+                if resp.status_code in _RETRY_STATUSES and attempt < _MAX_ATTEMPTS - 1:
+                    await asyncio.sleep(2 ** attempt)
+                    continue
+                resp.raise_for_status()
+                return resp.json()
+            except httpx.TimeoutException:
+                if attempt < _MAX_ATTEMPTS - 1:
+                    await asyncio.sleep(2 ** attempt)
+                    continue
+                raise
+        raise RuntimeError("retry exhausted")
diff --git a/services/naver-fetch/tests/test_nas_client.py b/services/naver-fetch/tests/test_nas_client.py
new file mode 100644
index 0000000..d1e4d5a
--- /dev/null
+++ b/services/naver-fetch/tests/test_nas_client.py
@@ -0,0 +1,41 @@
+"""NASClient — targets/ingest + X-Internal-Key (respx)."""
+import json as _json
+
+import httpx
+import respx
+
+from nas_client import NASClient
+
+BASE = "http://nas.test"
+
+
+@respx.mock
+async def test_get_targets_sends_key():
+    route = respx.get(f"{BASE}/api/internal/realestate/targets").mock(
+        return_value=httpx.Response(200, json={
+            "dongs": [{"dong": "신대방동", "cortar_no": "1159010100"}],
+            "deal_types": ["전세", "매매"], "page_limit": 2}))
+    c = NASClient(BASE, "KEY")
+    tg = await c.get_targets()
+    assert tg["page_limit"] == 2
+    assert tg["dongs"][0]["cortar_no"] == "1159010100"
+    assert route.calls.last.request.headers["X-Internal-Key"] == "KEY"
+    await c.close()
+
+
+@respx.mock
+async def test_post_ingest_payload():
+    captured = {}
+
+    def _resp(request):
+        captured.update(_json.loads(request.content))
+        return httpx.Response(200, json={"received": 3, "new": 2, "matched": 1})
+
+    respx.post(f"{BASE}/api/internal/realestate/listings-ingest").mock(side_effect=_resp)
+    c = NASClient(BASE, "KEY")
+    batches = [{"dong": "신대방동", "articles": [{"articleNo": "1"}, {"articleNo": "2"}]}]
+    out = await c.post_ingest("2026-07-10T05:00:00Z", batches)
+    assert out == {"received": 3, "new": 2, "matched": 1}
+    assert captured["fetched_at"] == "2026-07-10T05:00:00Z"
+    assert captured["batches"] == batches
+    await c.close()