feat: KIS (Korea Investment) market data collector service

- KIS API integration for stock prices and market data
- GET /stocks endpoint with search, filter, pagination
- GET /stocks/{code} endpoint with prices and valuation
- REST API with health, streams, and trigger endpoints
- Redis Streams for async job processing
- Docker support with multi-stage build

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.dockerignore

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+__pycache__
+*.pyc
+.git
+.venv
+*.egg-info
+dist
+build
+.env

.gitignore

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+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+*.egg-info/
+dist/
+build/
+.eggs/
+.venv/
+venv/
+.env
+.vscode/
+.idea/
+*.swp
+*.swo
+.DS_Store
+.pytest_cache/
+htmlcov/
+.coverage
+coverage.xml
+.mypy_cache/
+.claude/

Dockerfile

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+FROM python:3.12-slim
+
+WORKDIR /app
+
+COPY stock-common/ /tmp/stock-common/
+RUN pip install --no-cache-dir /tmp/stock-common/ && rm -rf /tmp/stock-common/
+
+COPY stock-kis-collector/ .
+RUN pip install --no-cache-dir .
+
+CMD ["python", "-m", "stock_kis_collector.worker"]

pyproject.toml

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+[project]
+name = "stock-kis-collector"
+version = "0.1.0"
+description = "KIS Open API collector - stock prices and market data"
+requires-python = ">=3.12"
+dependencies = [
+    "stock-common",
+]
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/stock_kis_collector"]

src/stock_kis_collector/__init__.py

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+"""KIS Open API collector service."""
+
+__version__ = "0.1.0"

src/stock_kis_collector/api.py

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+"""REST API for KIS collector service.
+
+Endpoints:
+  GET  /stocks              - list stocks (from PostgreSQL)
+  GET  /stocks/{stock_code} - get stock detail with latest price
+  POST /collect/stocks      - trigger stock list collection
+  POST /collect/prices      - trigger price collection
+  GET  /health              - (from api_base)
+  GET  /streams             - (from api_base)
+"""
+
+import structlog
+from pydantic import BaseModel
+
+from stock_common.api_base import create_app
+from stock_common.database import get_pg_pool
+from stock_common.queue import publish
+
+logger = structlog.get_logger(service="kis-api")
+
+TRIGGER_STREAM = "queue:trigger-kis"
+
+
+class StocksRequest(BaseModel):
+    market: str = "all"
+
+
+class PricesRequest(BaseModel):
+    stock_codes: list[str]
+
+
+app = create_app(
+    title="stock-kis-collector",
+    streams=[TRIGGER_STREAM, "queue:raw-prices", "queue:raw-stocks"],
+)
+
+
+@app.get("/stocks")
+async def list_stocks(market: str = "all", search: str = "", limit: int = 100, offset: int = 0):
+    try:
+        pool = await get_pg_pool()
+    except Exception:
+        return {"total": 0, "stocks": []}
+
+    conditions = ["is_active = true"]
+    params: list = []
+    idx = 1
+
+    if market != "all":
+        conditions.append(f"market = ${idx}")
+        params.append(market)
+        idx += 1
+
+    if search:
+        conditions.append(f"(stock_name ILIKE ${idx} OR stock_code ILIKE ${idx})")
+        params.append(f"%{search}%")
+        idx += 1
+
+    where = " AND ".join(conditions)
+
+    try:
+        async with pool.acquire() as conn:
+            count = await conn.fetchval(f"SELECT COUNT(*) FROM stock WHERE {where}", *params)
+            rows = await conn.fetch(
+                f"""SELECT s.stock_code, s.stock_name, s.market, s.sector, s.industry,
+                           p.close, p.volume, p.market_cap,
+                           ROUND(((p.close - p2.close)::numeric / NULLIF(p2.close, 0)) * 100, 2) AS change_pct
+                    FROM stock s
+                    LEFT JOIN LATERAL (
+                        SELECT close, volume, market_cap FROM daily_price
+                        WHERE stock_code = s.stock_code ORDER BY date DESC LIMIT 1
+                    ) p ON true
+                    LEFT JOIN LATERAL (
+                        SELECT close FROM daily_price
+                        WHERE stock_code = s.stock_code ORDER BY date DESC LIMIT 1 OFFSET 1
+                    ) p2 ON true
+                    WHERE {where}
+                    ORDER BY p.market_cap DESC NULLS LAST
+                    LIMIT ${idx} OFFSET ${idx + 1}""",
+                *params, limit, offset,
+            )
+        return {"total": count, "stocks": [dict(r) for r in rows]}
+    except Exception as exc:
+        logger.warning("stocks_query_failed", error=str(exc))
+        return {"total": 0, "stocks": []}
+
+
+@app.get("/stocks/{stock_code}")
+async def get_stock(stock_code: str):
+    try:
+        pool = await get_pg_pool()
+    except Exception:
+        return {"error": "db_unavailable", "stock_code": stock_code}
+
+    try:
+        async with pool.acquire() as conn:
+            stock = await conn.fetchrow(
+                "SELECT stock_code, stock_name, market, sector, industry FROM stock WHERE stock_code = $1",
+                stock_code,
+            )
+            if not stock:
+                return {"error": "not_found", "stock_code": stock_code}
+
+            prices = await conn.fetch(
+                """SELECT date, open, high, low, close, volume, market_cap
+                   FROM daily_price WHERE stock_code = $1
+                   ORDER BY date DESC LIMIT 30""",
+                stock_code,
+            )
+
+            valuation = await conn.fetchrow(
+                """SELECT per, pbr, peg, roe, debt_ratio, fcf_yield, ev_ebitda
+                   FROM valuation WHERE stock_code = $1
+                   ORDER BY calculated_at DESC LIMIT 1""",
+                stock_code,
+            )
+
+        result = dict(stock)
+        result["prices"] = [dict(p) for p in prices]
+        result["valuation"] = dict(valuation) if valuation else None
+        return result
+    except Exception as exc:
+        logger.warning("stock_detail_query_failed", error=str(exc), stock_code=stock_code)
+        return {"error": "query_failed", "stock_code": stock_code}
+
+
+@app.post("/collect/stocks")
+async def collect_stocks(req: StocksRequest):
+    msg_id = await publish(TRIGGER_STREAM, {
+        "type": "stocks",
+        "market": req.market,
+    })
+    return {"status": "queued", "message_id": msg_id}
+
+
+@app.post("/collect/prices")
+async def collect_prices(req: PricesRequest):
+    msg_id = await publish(TRIGGER_STREAM, {
+        "type": "prices",
+        "stock_codes": req.stock_codes,
+    })
+    return {"status": "queued", "message_id": msg_id, "stock_codes": req.stock_codes}

src/stock_kis_collector/collector.py

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+"""Korea Investment Securities (KIS) Open API collector for prices and stock data."""
+
+import asyncio
+from datetime import date, datetime, timedelta
+from typing import Any
+
+from stock_common.collector_base import AuthenticationError, BaseCollector
+from stock_common.config import settings
+from stock_common.models.price import DailyPrice
+from stock_common.models.stock import Market, Stock
+
+
+class KISCollector(BaseCollector):
+    """Collector for KIS Open API (stock prices and market data).
+
+    Authentication: OAuth2 (AppKey + AppSecret -> access token, 24h TTL).
+    """
+
+    def __init__(self) -> None:
+        super().__init__(rate_limit=settings.kis_rate_limit, timeout=30)
+        self.base_url = settings.kis_base_url
+        self.app_key = settings.kis_app_key
+        self.app_secret = settings.kis_app_secret
+        self._access_token: str | None = None
+        self._token_expires_at: datetime | None = None
+        self._token_lock = asyncio.Lock()
+
+    async def collect(self, **kwargs: Any) -> None:
+        raise NotImplementedError("Use specific methods: collect_stocks, collect_prices, etc.")
+
+    async def _ensure_token(self) -> str:
+        now = datetime.now()
+        if self._access_token and self._token_expires_at and now < self._token_expires_at:
+            return self._access_token
+
+        async with self._token_lock:
+            now = datetime.now()
+            if self._access_token and self._token_expires_at and now < self._token_expires_at:
+                return self._access_token
+
+            url = f"{self.base_url}/oauth2/tokenP"
+            payload = {
+                "grant_type": "client_credentials",
+                "appkey": self.app_key,
+                "appsecret": self.app_secret,
+            }
+
+            try:
+                data = await self._request("POST", url, json=payload)
+                if not isinstance(data, dict):
+                    raise AuthenticationError("Invalid token response")
+                self._access_token = data.get("access_token", "")
+                expires_in = int(data.get("expires_in", 86400))
+                self._token_expires_at = now + timedelta(seconds=expires_in - 3600)
+                self.logger.info("kis_token_obtained", expires_in=expires_in)
+                return self._access_token
+            except Exception as exc:
+                raise AuthenticationError(f"Failed to obtain KIS token: {exc}") from exc
+
+    def _build_headers(self, token: str, tr_id: str) -> dict[str, str]:
+        return {
+            "Content-Type": "application/json; charset=utf-8",
+            "authorization": f"Bearer {token}",
+            "appkey": self.app_key,
+            "appsecret": self.app_secret,
+            "tr_id": tr_id,
+        }
+
+    async def collect_stocks(self, market: Market = Market.KOSPI) -> list[Stock]:
+        token = await self._ensure_token()
+        tr_id = "FHPST01740000"
+        url = f"{self.base_url}/uapi/domestic-stock/v1/ranking/market-cap"
+        fid_input_iscd = "0001" if market == Market.KOSPI else "1001"
+
+        headers = self._build_headers(token, tr_id)
+        params = {
+            "FID_COND_MRKT_DIV_CODE": "J" if market == Market.KOSPI else "Q",
+            "FID_COND_SCR_DIV_CODE": "20174",
+            "FID_INPUT_ISCD": fid_input_iscd,
+            "FID_DIV_CLS_CODE": "0",
+            "FID_TRGT_CLS_CODE": "", "FID_TRGT_EXLS_CLS_CODE": "",
+            "FID_INPUT_PRICE_1": "", "FID_INPUT_PRICE_2": "",
+            "FID_VOL_CNT": "", "FID_INPUT_DATE_1": "",
+        }
+
+        stocks: list[Stock] = []
+        data = await self._request("GET", url, headers=headers, params=params)
+        if not isinstance(data, dict):
+            return stocks
+
+        for item in data.get("output", []):
+            try:
+                stock = Stock(
+                    stock_code=item.get("mksc_shrn_iscd", "").strip(),
+                    stock_name=item.get("hts_kor_isnm", "").strip(),
+                    market=market, sector=item.get("bstp_larg_div_code_name"),
+                    industry=item.get("bstp_medm_div_code_name"),
+                    is_active=True, updated_at=datetime.now(),
+                )
+                if stock.stock_code:
+                    stocks.append(stock)
+            except Exception as exc:
+                self.logger.warning("stock_parse_error", error=str(exc))
+
+        self.logger.info("stocks_collected", market=market.value, count=len(stocks))
+        return stocks
+
+    async def collect_price(self, stock_code: str) -> DailyPrice | None:
+        token = await self._ensure_token()
+        url = f"{self.base_url}/uapi/domestic-stock/v1/quotations/inquire-price"
+        headers = self._build_headers(token, "FHKST01010100")
+        params = {"FID_COND_MRKT_DIV_CODE": "J", "FID_INPUT_ISCD": stock_code}
+
+        data = await self._request("GET", url, headers=headers, params=params)
+        if not isinstance(data, dict):
+            return None
+        output = data.get("output", {})
+        if not output:
+            return None
+
+        try:
+            return DailyPrice(
+                stock_code=stock_code, date=date.today(),
+                open=output.get("stck_oprc"), high=output.get("stck_hgpr"),
+                low=output.get("stck_lwpr"), close=output.get("stck_prpr"),
+                volume=int(output.get("acml_vol", 0)) if output.get("acml_vol") else None,
+                market_cap=int(output.get("hts_avls", 0)) * 100_000_000 if output.get("hts_avls") else None,
+                source="KIS",
+            )
+        except Exception as exc:
+            self.logger.warning("price_parse_error", stock_code=stock_code, error=str(exc))
+            return None
+
+    async def collect_daily_prices(
+        self, stock_code: str, start_date: date | None = None, end_date: date | None = None,
+    ) -> list[DailyPrice]:
+        token = await self._ensure_token()
+        url = f"{self.base_url}/uapi/domestic-stock/v1/quotations/inquire-daily-itemchartprice"
+        if end_date is None:
+            end_date = date.today()
+        if start_date is None:
+            start_date = end_date - timedelta(days=30)
+
+        headers = self._build_headers(token, "FHKST03010100")
+        params = {
+            "FID_COND_MRKT_DIV_CODE": "J", "FID_INPUT_ISCD": stock_code,
+            "FID_INPUT_DATE_1": start_date.strftime("%Y%m%d"),
+            "FID_INPUT_DATE_2": end_date.strftime("%Y%m%d"),
+            "FID_PERIOD_DIV_CODE": "D", "FID_ORG_ADJ_PRC": "0",
+        }
+
+        data = await self._request("GET", url, headers=headers, params=params)
+        if not isinstance(data, dict):
+            return []
+
+        prices: list[DailyPrice] = []
+        for item in data.get("output2", []):
+            try:
+                dt = item.get("stck_bsop_date", "")
+                if not dt:
+                    continue
+                prices.append(DailyPrice(
+                    stock_code=stock_code, date=datetime.strptime(dt, "%Y%m%d").date(),
+                    open=item.get("stck_oprc"), high=item.get("stck_hgpr"),
+                    low=item.get("stck_lwpr"), close=item.get("stck_clpr"),
+                    volume=int(item.get("acml_vol", 0)) if item.get("acml_vol") else None,
+                    source="KIS",
+                ))
+            except Exception as exc:
+                self.logger.warning("daily_price_parse_error", error=str(exc))
+
+        return prices

src/stock_kis_collector/worker.py

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+"""KIS collector worker - runs as a standalone service.
+
+Runs both the Redis stream consumer loop AND the REST API server concurrently.
+"""
+
+import asyncio
+
+import structlog
+import uvicorn
+
+from stock_common.config import settings
+from stock_common.logging_config import configure_logging
+from stock_common.models.stock import Market
+from stock_common.queue import consume, publish, ack
+
+from stock_kis_collector.collector import KISCollector
+from stock_kis_collector.api import app
+
+logger = structlog.get_logger(service="kis-collector")
+
+TRIGGER_STREAM = "queue:trigger-kis"
+OUTPUT_PRICES = "queue:raw-prices"
+OUTPUT_STOCKS = "queue:raw-stocks"
+GROUP = "kis-collectors"
+CONSUMER = "kis-worker-1"
+
+
+async def worker_loop() -> None:
+    """Redis stream consumer loop with auto-restart on failure."""
+    while True:
+        try:
+            async with KISCollector() as collector:
+                while True:
+                    messages = await consume(TRIGGER_STREAM, GROUP, CONSUMER, count=1, block=5000)
+
+                    for msg in messages:
+                        task_type = msg.data.get("type", "prices")
+                        stock_codes = msg.data.get("stock_codes", [])
+
+                        try:
+                            if task_type in ("stocks", "all"):
+                                for market in (Market.KOSPI, Market.KOSDAQ):
+                                    stocks = await collector.collect_stocks(market)
+                                    for s in stocks:
+                                        await publish(OUTPUT_STOCKS, s.model_dump())
+
+                            if task_type in ("prices", "all"):
+                                for code in stock_codes:
+                                    price = await collector.collect_price(code)
+                                    if price:
+                                        await publish(OUTPUT_PRICES, price.model_dump())
+
+                            await ack(TRIGGER_STREAM, GROUP, msg.message_id)
+                            logger.info("task_completed", task_type=task_type)
+                        except Exception as exc:
+                            logger.error("task_failed", error=str(exc))
+        except Exception as exc:
+            logger.error("worker_loop_crashed", error=str(exc))
+            await asyncio.sleep(10)
+            logger.info("worker_loop_restarting")
+
+
+async def run() -> None:
+    configure_logging(level=settings.log_level, log_format=settings.log_format)
+    logger.info("kis_collector_starting")
+
+    config = uvicorn.Config(app, host="0.0.0.0", port=8002, log_level="info")
+    server = uvicorn.Server(config)
+
+    await asyncio.gather(
+        worker_loop(),
+        server.serve(),
+        return_exceptions=True,
+    )
+
+
+def main() -> None:
+    asyncio.run(run())
+
+
+if __name__ == "__main__":
+    main()