增加K线

backend/app/main.py

@@ -10,6 +10,7 @@ from .config import ROOT_DIR, settings
 from .funding_store import get_funding_bundle
 from .kline_store import get_candles, get_daily_candles, sync_daily_klines, sync_klines
 from .chart_intervals import CHART_INTERVALS, limit_for_interval, validate_interval
+from .binance import binance_client
 from .db import get_latest_snapshot, init_db, log_push, save_snapshot
 from .exceptions import BinanceRateLimitedError
 from .period_api import get_period_top30
@@ -28,6 +29,14 @@ logging.getLogger("httpx").setLevel(logging.WARNING)
 logging.getLogger("httpcore").setLevel(logging.WARNING)
 logger = logging.getLogger(__name__)
 
+
+async def _chart_price_meta(sym: str) -> dict:
+    try:
+        return await binance_client.get_symbol_price_meta(sym)
+    except Exception as e:
+        logger.warning("price meta %s fallback: %s", sym, e)
+        return {"tick_size": "0.01", "price_precision": 2}
+
 WEB_DIR = ROOT_DIR / "web"
 
 
@@ -165,6 +174,7 @@ async def api_chart(
         candles, source = await get_candles(
             sym, iv, limit or default_limit, force_refresh=refresh
         )
+        price_meta = await _chart_price_meta(sym)
         return {
             "symbol": sym,
             "interval": iv,
@@ -172,6 +182,7 @@ async def api_chart(
             "candles": candles,
             "source": source,
             "intervals": list(CHART_INTERVALS),
+            **price_meta,
         }
     except BinanceRateLimitedError as e:
         raise HTTPException(503, f"币安限流，请 {e.retry_after_sec} 秒后再试") from e
@@ -188,6 +199,7 @@ async def api_chart_daily(symbol: str, limit: int | None = None, refresh: bool =
         raise HTTPException(400, "invalid symbol")
     try:
         candles, source = await get_daily_candles(sym, limit, force_refresh=refresh)
+        price_meta = await _chart_price_meta(sym)
         return {
             "symbol": sym,
             "interval": "1d",
@@ -195,6 +207,7 @@ async def api_chart_daily(symbol: str, limit: int | None = None, refresh: bool =
             "candles": candles,
             "source": source,
             "intervals": list(CHART_INTERVALS),
+            **price_meta,
         }
     except BinanceRateLimitedError as e:
         raise HTTPException(503, f"币安限流，请 {e.retry_after_sec} 秒后再试") from e