ZhuLinsen/daily_stock_analysis · error · DataFetchError

[Finnhub] HTTP request failed for {symbol}: {e}

Error message

[Finnhub] HTTP request failed for {symbol}: {e}

What it means

Network/HTTP failure in FinnhubFetcher._fetch_raw_data: requests.get (timeout=15) raised, raise_for_status saw a 4xx/5xx, or JSON decoding failed. The original exception is chained (__cause__) and embedded in the message, so the status code or timeout reason is visible verbatim.

Source

Thrown at data_provider/finnhub_fetcher.py:66

        start_ts = int(datetime.strptime(start_date, '%Y-%m-%d').timestamp())
        end_ts = int(datetime.strptime(end_date, '%Y-%m-%d').timestamp())

        url = f"{_FINNHUB_BASE_URL}/stock/candle"
        params = {
            'symbol': symbol,
            'resolution': 'D',
            'from': start_ts,
            'to': end_ts,
            'token': self._api_key,
        }

        try:
            self.random_sleep(0.3, 0.8)
            resp = requests.get(url, params=params, timeout=15)
            resp.raise_for_status()
            data = resp.json()
        except Exception as e:
            raise DataFetchError(f"[Finnhub] HTTP request failed for {symbol}: {e}") from e

        if data.get('s') != 'ok' or not data.get('c'):
            raise DataFetchError(f"[Finnhub] No data returned for {symbol}")

        return pd.DataFrame({
            'c': data['c'],
            'h': data['h'],
            'l': data['l'],
            'o': data['o'],
            't': data['t'],
            'v': data['v'],
        })

    def _normalize_data(self, df: pd.DataFrame, stock_code: str) -> pd.DataFrame:
        if df.empty:
            return df

        df = df.copy()

View on GitHub (pinned to 5159bd72e8)

Solutions

1. Inspect the embedded {e}: 429 -> slow down / upgrade plan; 403 -> reissue the API key; timeout -> retry once, then fail over to AlphaVantage/YFinance via the manager.
2. Add backoff between Finnhub calls to stay under the free-tier per-minute quota.
3. Verify network egress to finnhub.io (proxy/HTTP_PROXY settings) in containers and CI.

try:
    df = finnhub.get_daily_data(symbol, ...)
except DataFetchError as e:
    msg = str(e)
    if '429' in msg:
        time.sleep(60); df = finnhub.get_daily_data(symbol, ...)
    elif '403' in msg:
        alert('Finnhub key rejected')
    else:
        df = manager.get_daily_data(symbol, ...)  # fail over

When it happens

Trigger: GET {FINNHUB_BASE_URL}/stock/candle with symbol/resolution/from/to/token — timeouts after 15s, 403 (invalid key / key disabled), 429 (free-tier 60 calls/min), DNS/TLS failures, or a non-JSON error page.

Common situations: Free-tier rate limit exhaustion (429) during batch US fetches; revoked API key (403); corporate proxy blocking finnhub.io; slow mobile networks hitting the 15s timeout.

Related errors

• [AlphaVantage] HTTP request failed for {symbol}: {e}
• {call_name} 调用超过 {wait_seconds:g}s，已放弃等待
• 题材新闻搜索超过 {wait_seconds:g}s，已终止请求进程
• {task_name} ranking fetch timeout after {timeout_value:g}s
• read_failed

AI-assisted analysis of ZhuLinsen/daily_stock_analysis@5159bd72e8 (2026-08-15). Data as JSON: /api/errors/e934094dc3177541. Report an issue: GitHub.