475 lines
18 KiB
Python
475 lines
18 KiB
Python
#!/usr/bin/env python3
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"""RSS News Digest — fetch feeds, store articles with full content in SQLite, and summarize via Ollama during fetch.
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Recommended: run via ./run.sh, which uses `uv` to handle dependencies
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automatically (no manual venv or pip install needed).
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When an `ollama` key is present in config.json, each newly fetched article is
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automatically summarized and the result is stored in the database. Ollama
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latency provides natural rate limiting between HTTP requests; when Ollama is
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not configured, a 1-second sleep is used instead.
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Uses a requests.Session with automatic retries and browser-like headers to
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handle transient HTTP errors (429/5xx). A configurable per-feed article cap
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helps avoid overwhelming upstream servers.
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Use ``--test`` to smoke-test feed fetching and/or Ollama summarization without
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writing to the database.
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"""
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import argparse
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import json
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import logging
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import sqlite3
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import sys
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import time
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from datetime import datetime, timedelta, timezone
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from pathlib import Path
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from time import mktime
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import feedparser
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import requests
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from bs4 import BeautifulSoup
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from requests.adapters import HTTPAdapter
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from urllib3.util.retry import Retry
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logger = logging.getLogger("news_digest")
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# Hardcoded test articles for --test summary (one English, one Chinese)
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_TEST_ARTICLES = [
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{
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"title": "Global Semiconductor Shortage Eases as New Factories Come Online",
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"content": (
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"The global chip shortage that disrupted industries from automotive to "
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"consumer electronics is finally showing signs of relief. Major semiconductor "
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"manufacturers including TSMC, Samsung, and Intel have begun production at new "
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"fabrication plants in Arizona, Texas, and Japan. Industry analysts project that "
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"global chip capacity will increase by 15% over the next 18 months, potentially "
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"leading to a supply surplus in certain categories. The shift has already begun "
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"to impact pricing, with memory chip costs dropping 12% in the last quarter."
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),
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},
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{
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"title": "中国新能源汽车出口量首次突破年度600万辆大关",
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"content": (
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"据中国汽车工业协会最新数据，2025年中国新能源汽车出口量首次突破600万辆，"
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"同比增长38%。比亚迪、上汽、蔚来等品牌在东南亚、欧洲和南美市场持续扩张。"
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"分析人士指出，中国在电池技术和供应链方面的优势使其产品在全球市场具有较强"
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"竞争力，但欧盟加征的反补贴关税可能对未来增长构成挑战。"
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),
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},
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]
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def _build_session() -> requests.Session:
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"""Create a requests session with automatic retries and browser-like headers."""
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session = requests.Session()
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retry = Retry(
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total=3,
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backoff_factor=1, # 1s, 2s, 4s between retries
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status_forcelist=[429, 500, 502, 503, 504],
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respect_retry_after_header=True,
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)
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adapter = HTTPAdapter(max_retries=retry)
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session.mount("http://", adapter)
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session.mount("https://", adapter)
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session.headers.update({
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"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) "
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"AppleWebKit/537.36 (KHTML, like Gecko) "
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"Chrome/131.0.0.0 Safari/537.36",
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"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
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"Accept-Language": "en-US,en;q=0.9",
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})
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return session
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_session = _build_session()
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def load_config(path: str) -> dict:
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with open(path, encoding="utf-8") as f:
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return json.load(f)
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def init_db(db_path: str) -> sqlite3.Connection:
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conn = sqlite3.connect(db_path)
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conn.row_factory = sqlite3.Row
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conn.execute("""
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CREATE TABLE IF NOT EXISTS articles (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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url TEXT UNIQUE NOT NULL,
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title TEXT,
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description TEXT,
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content TEXT,
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summary TEXT,
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published_date TEXT,
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fetched_date TEXT NOT NULL,
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feed_name TEXT,
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feed_url TEXT,
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category TEXT,
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author TEXT
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)
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""")
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conn.commit()
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return conn
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def parse_article_date(entry) -> datetime | None:
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for attr in ("published_parsed", "updated_parsed"):
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parsed = getattr(entry, attr, None)
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if parsed:
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return datetime.fromtimestamp(mktime(parsed), tz=timezone.utc)
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return None
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def is_within_lookback(dt: datetime | None, hours: int) -> bool:
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if dt is None:
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return True
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cutoff = datetime.now(timezone.utc) - timedelta(hours=hours)
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return dt >= cutoff
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def fetch_feed(url: str) -> list[dict]:
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try:
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resp = _session.get(url, timeout=30)
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resp.raise_for_status()
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raw = resp.content
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except requests.RequestException as e:
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logger.warning("Failed to fetch %s: %s", url, e)
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return []
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feed = feedparser.parse(raw)
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if feed.bozo and not feed.entries:
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logger.warning("Feed parse error for %s: %s", url, feed.bozo_exception)
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return []
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return feed.entries
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def fetch_content(url: str) -> str | None:
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try:
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resp = _session.get(url, timeout=15)
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resp.raise_for_status()
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html = resp.content
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except requests.RequestException as e:
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logger.warning("Failed to fetch content from %s: %s", url, e)
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return None
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soup = BeautifulSoup(html, "html.parser")
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# Remove non-content elements
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for tag in soup.find_all(["script", "style", "nav", "header", "footer", "aside", "form"]):
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tag.decompose()
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# Try common article content containers first
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article = (
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soup.find("article")
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or soup.find(attrs={"role": "main"})
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or soup.find("main")
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or soup.find(class_=lambda c: c and ("article" in c or "content" in c or "post" in c))
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)
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target = article if article else soup.body if soup.body else soup
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text = target.get_text(separator="\n", strip=True)
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# Collapse excessive blank lines
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lines = [line for line in text.splitlines() if line.strip()]
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return "\n".join(lines) if lines else None
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def save_articles(conn: sqlite3.Connection, articles: list[dict]) -> list[str]:
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"""Insert articles, return list of URLs that were newly inserted."""
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new_urls = []
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now = datetime.now(timezone.utc).isoformat()
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for a in articles:
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try:
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conn.execute(
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"""INSERT OR IGNORE INTO articles
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(url, title, description, published_date, fetched_date,
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feed_name, feed_url, category, author)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)""",
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(
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a["url"],
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a.get("title"),
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a.get("description"),
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a.get("published_date"),
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now,
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a.get("feed_name"),
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a.get("feed_url"),
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a.get("category"),
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a.get("author"),
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),
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)
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if conn.execute("SELECT changes()").fetchone()[0] > 0:
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new_urls.append(a["url"])
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except sqlite3.Error as e:
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logger.warning("DB insert error for %s: %s", a.get("url"), e)
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conn.commit()
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return new_urls
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def purge_old_articles(conn: sqlite3.Connection, days: int) -> int:
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cutoff = (datetime.now(timezone.utc) - timedelta(days=days)).isoformat()
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conn.execute("DELETE FROM articles WHERE fetched_date < ?", (cutoff,))
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deleted = conn.execute("SELECT changes()").fetchone()[0]
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conn.commit()
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return deleted
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def get_recent_articles(conn: sqlite3.Connection, hours: int) -> list[dict]:
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cutoff = (datetime.now(timezone.utc) - timedelta(hours=hours)).isoformat()
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rows = conn.execute(
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"SELECT * FROM articles WHERE published_date >= ? OR published_date IS NULL ORDER BY id",
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(cutoff,),
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).fetchall()
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return [dict(r) for r in rows]
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def generate_summary(title: str, description: str | None, content: str | None, model: str, prompt: str) -> str | None:
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try:
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import ollama as ollama_lib
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except ImportError:
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logger.warning("ollama package not installed; skipping summary")
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return None
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body = content or description
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article_text = f"Title: {title}"
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if body:
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article_text += f"\n\n{body}"
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user_message = f"{prompt}\n\n{article_text}"
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try:
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response = ollama_lib.chat(
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model=model,
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messages=[{"role": "user", "content": user_message}],
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)
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return response["message"]["content"]
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except Exception as e:
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logger.warning("Ollama error for '%s': %s", title, e)
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return None
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def _run_test(mode: str, config: dict) -> None:
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"""Run smoke tests for feed fetching, summarization, or both.
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All JSON results go to stdout; status messages go to stderr.
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"""
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if mode not in ("", "feed", "summary"):
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print(f"Unknown test mode: {mode!r} (use 'feed', 'summary', or omit)", file=sys.stderr)
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sys.exit(1)
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feed_article = None # may be populated by feed test for use in full mode
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# --- Feed test ---
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if mode in ("", "feed"):
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print("=== Feed test ===", file=sys.stderr)
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feeds = config.get("feeds", [])
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enabled = [f for f in feeds if f.get("enabled", True)]
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if not enabled:
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print("FAIL: no enabled feeds in config", file=sys.stderr)
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sys.exit(1)
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feed_cfg = enabled[0]
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url = feed_cfg["url"]
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name = feed_cfg.get("name", url)
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print(f"Fetching feed: {name} ({url})", file=sys.stderr)
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entries = fetch_feed(url)
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if not entries:
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print("FAIL: no entries returned from feed", file=sys.stderr)
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sys.exit(1)
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entry = entries[0]
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link = entry.get("link", "")
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title = entry.get("title", "")
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print(f"Fetching content: {link}", file=sys.stderr)
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content = fetch_content(link) if link else None
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result = {
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"feed": name,
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"title": title,
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"url": link,
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"content_length": len(content) if content else 0,
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}
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print(json.dumps(result, ensure_ascii=False, indent=2))
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if content:
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print("PASS: feed fetch", file=sys.stderr)
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feed_article = {"title": title, "content": content}
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else:
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print("FAIL: could not fetch article content", file=sys.stderr)
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if mode == "feed":
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sys.exit(1)
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# --- Summary test ---
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if mode in ("", "summary"):
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print("=== Summary test ===", file=sys.stderr)
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ollama_cfg = config.get("ollama")
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if not ollama_cfg:
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print("FAIL: no 'ollama' key in config", file=sys.stderr)
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sys.exit(1)
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model = ollama_cfg.get("model", "kamekichi128/qwen3-4b-instruct-2507")
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prompt = ollama_cfg.get("prompt", "Summarize the following news article in 2-3 concise sentences:")
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# Build test inputs: hardcoded articles + fetched article (full mode only)
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articles = list(_TEST_ARTICLES)
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if feed_article:
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articles.append(feed_article)
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all_ok = True
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for article in articles:
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print(f"Summarizing: {article['title']}", file=sys.stderr)
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summary = generate_summary(article["title"], None, article["content"], model, prompt)
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result = {"title": article["title"], "summary": summary}
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print(json.dumps(result, ensure_ascii=False, indent=2))
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if not summary:
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all_ok = False
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if all_ok:
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print("PASS: summary", file=sys.stderr)
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else:
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print("FAIL: one or more summaries failed", file=sys.stderr)
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sys.exit(1)
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def main():
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parser = argparse.ArgumentParser(description="RSS News Digest")
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parser.add_argument("-c", "--config", default="config.json", help="Config file path")
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parser.add_argument("-d", "--database", default="news_digest.db", help="SQLite database path")
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parser.add_argument("--hours", type=int, help="Override lookback hours")
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parser.add_argument("-f", "--fields", default="id,title,url,published_date,fetched_date,feed_name", help="Comma-separated output fields")
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parser.add_argument("--purge-only", action="store_true", help="Only purge old articles")
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parser.add_argument("--no-fetch", action="store_true", help="Skip fetching feeds, only query stored articles")
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parser.add_argument("-v", "--verbose", action="store_true", help="Debug logging to stderr")
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parser.add_argument("--test", nargs="?", const="", metavar="MODE",
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help="Smoke test: 'feed', 'summary', or omit for full pipeline")
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args = parser.parse_args()
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logging.basicConfig(
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level=logging.DEBUG if args.verbose else logging.WARNING,
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format="%(asctime)s %(levelname)s %(message)s",
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stream=sys.stderr,
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)
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config_path = Path(args.config)
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if not config_path.exists():
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logger.error("Config file not found: %s", config_path)
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sys.exit(1)
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config = load_config(str(config_path))
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# Handle --test before any DB operations
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if args.test is not None:
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_run_test(args.test, config)
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return
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settings = config.get("settings", {})
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hours_lookback = args.hours or settings.get("hours_lookback", 24)
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retention_days = settings.get("retention_days", 30)
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max_per_feed = settings.get("max_articles_per_feed", 0)
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conn = init_db(args.database)
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# Purge old articles
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deleted = purge_old_articles(conn, retention_days)
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if deleted:
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logger.info("Purged %d articles older than %d days", deleted, retention_days)
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if args.purge_only:
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logger.info("Purge-only mode; exiting")
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conn.close()
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return
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# Fetch feeds
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if not args.no_fetch:
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feeds = config.get("feeds", [])
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total_new = 0
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# Read ollama config once for summarization during fetch
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ollama_cfg = config.get("ollama")
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if ollama_cfg:
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ollama_model = ollama_cfg.get("model", "kamekichi128/qwen3-4b-instruct-2507")
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ollama_prompt = ollama_cfg.get("prompt", "Summarize the following news article in 2-3 concise sentences:")
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logger.debug("Ollama summarization enabled (model: %s)", ollama_model)
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else:
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ollama_model = ollama_prompt = None
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logger.debug("Ollama not configured; skipping summarization")
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for feed_cfg in feeds:
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if not feed_cfg.get("enabled", True):
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logger.debug("Skipping disabled feed: %s", feed_cfg.get("name"))
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continue
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url = feed_cfg["url"]
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logger.debug("Fetching feed: %s (%s)", feed_cfg.get("name", url), url)
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entries = fetch_feed(url)
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logger.debug("Got %d entries from %s", len(entries), feed_cfg.get("name", url))
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articles = []
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for entry in entries:
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pub_date = parse_article_date(entry)
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if not is_within_lookback(pub_date, hours_lookback):
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continue
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link = entry.get("link", "")
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if not link:
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continue
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articles.append({
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"url": link,
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"title": entry.get("title"),
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"description": entry.get("summary"),
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"published_date": pub_date.isoformat() if pub_date else None,
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"feed_name": feed_cfg.get("name"),
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"feed_url": url,
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"category": feed_cfg.get("category"),
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"author": entry.get("author"),
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})
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# Cap articles per feed to avoid flooding the DB and downstream fetches
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if max_per_feed > 0:
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articles = articles[:max_per_feed]
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new_urls = save_articles(conn, articles)
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total_new += len(new_urls)
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logger.info("Feed '%s': %d new articles (of %d within lookback)",
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feed_cfg.get("name", url), len(new_urls), len(articles))
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# Fetch full content and optionally summarize newly inserted articles
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for i, article_url in enumerate(new_urls):
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if i > 0 and not ollama_cfg:
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time.sleep(1) # rate limit when Ollama isn't providing natural delay
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logger.debug("Fetching content: %s", article_url)
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content = fetch_content(article_url)
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summary = None
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if ollama_cfg:
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row = conn.execute(
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"SELECT title, description FROM articles WHERE url = ?", (article_url,)
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).fetchone()
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if row:
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summary = generate_summary(row["title"], row["description"], content, ollama_model, ollama_prompt)
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if summary:
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logger.debug("Generated summary for %s", article_url)
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else:
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if i > 0:
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time.sleep(1) # fallback rate limit on summary failure
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conn.execute(
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"UPDATE articles SET content = ?, summary = ? WHERE url = ?",
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(content, summary, article_url),
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)
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conn.commit()
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logger.info("Total new articles saved: %d", total_new)
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# Output recent articles
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recent = get_recent_articles(conn, hours_lookback)
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fields = [f.strip() for f in args.fields.split(",")]
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output = [{k: article[k] for k in fields if k in article} for article in recent]
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print(json.dumps(output, ensure_ascii=False, indent=2))
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conn.close()
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if __name__ == "__main__":
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main()
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