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| import os | |
| import feedparser | |
| from langchain.vectorstores import Chroma | |
| from langchain.embeddings import HuggingFaceEmbeddings | |
| from langchain.docstore.document import Document | |
| import logging | |
| from huggingface_hub import HfApi, login | |
| import shutil | |
| import rss_feeds | |
| # Setup logging | |
| logging.basicConfig(level=logging.INFO) | |
| logger = logging.getLogger(__name__) | |
| # Constants | |
| MAX_ARTICLES_PER_FEED = 5 | |
| LOCAL_DB_DIR = "chroma_db" | |
| RSS_FEEDS = rss_feeds.RSS_FEEDS | |
| COLLECTION_NAME = "news_articles" # Explicitly name the collection | |
| HF_API_TOKEN = os.getenv("DEMO_HF_API_TOKEN", "YOUR_HF_API_TOKEN") | |
| REPO_ID = "broadfield-dev/news-rag-db" | |
| # Initialize Hugging Face API | |
| login(token=HF_API_TOKEN) | |
| hf_api = HfApi() | |
| # Initialize embedding model (global, reusable) | |
| embedding_model = HuggingFaceEmbeddings(model_name="sentence-transformers/all-MiniLM-L6-v2") | |
| # Initialize vector DB with a specific collection name | |
| vector_db = Chroma( | |
| persist_directory=LOCAL_DB_DIR, | |
| embedding_function=embedding_model, | |
| collection_name=COLLECTION_NAME | |
| ) | |
| def fetch_rss_feeds(): | |
| articles = [] | |
| seen_keys = set() | |
| for feed_url in RSS_FEEDS: | |
| try: | |
| logger.info(f"Fetching {feed_url}") | |
| feed = feedparser.parse(feed_url) | |
| if feed.bozo: | |
| logger.warning(f"Parse error for {feed_url}: {feed.bozo_exception}") | |
| continue | |
| article_count = 0 | |
| for entry in feed.entries: | |
| if article_count >= MAX_ARTICLES_PER_FEED: | |
| break | |
| title = entry.get("title", "No Title").strip() | |
| link = entry.get("link", "").strip() | |
| description = entry.get("summary", entry.get("description", "No Description")) | |
| published = entry.get("published", "Unknown Date").strip() | |
| key = f"{title}|{link}|{published}" | |
| if key not in seen_keys: | |
| seen_keys.add(key) | |
| image = (entry.get("media_content", [{}])[0].get("url") or | |
| entry.get("media_thumbnail", [{}])[0].get("url") or "svg") | |
| articles.append({ | |
| "title": title, | |
| "link": link, | |
| "description": description, | |
| "published": published, | |
| "category": categorize_feed(feed_url), | |
| "image": image, | |
| }) | |
| article_count += 1 | |
| except Exception as e: | |
| logger.error(f"Error fetching {feed_url}: {e}") | |
| logger.info(f"Total articles fetched: {len(articles)}") | |
| return articles | |
| def categorize_feed(url): | |
| if "nature" in url or "science.org" in url or "arxiv.org" in url or "plos.org" in url or "annualreviews.org" in url or "journals.uchicago.edu" in url or "jneurosci.org" in url or "cell.com" in url or "nejm.org" in url or "lancet.com" in url: | |
| return "Academic Papers" | |
| elif "reuters.com/business" in url or "bloomberg.com" in url or "ft.com" in url or "marketwatch.com" in url or "cnbc.com" in url or "foxbusiness.com" in url or "wsj.com" in url or "bworldonline.com" in url or "economist.com" in url or "forbes.com" in url: | |
| return "Business" | |
| elif "investing.com" in url or "cnbc.com/market" in url or "marketwatch.com/market" in url or "fool.co.uk" in url or "zacks.com" in url or "seekingalpha.com" in url or "barrons.com" in url or "yahoofinance.com" in url: | |
| return "Stocks & Markets" | |
| elif "whitehouse.gov" in url or "state.gov" in url or "commerce.gov" in url or "transportation.gov" in url or "ed.gov" in url or "dol.gov" in url or "justice.gov" in url or "federalreserve.gov" in url or "occ.gov" in url or "sec.gov" in url or "bls.gov" in url or "usda.gov" in url or "gao.gov" in url or "cbo.gov" in url or "fema.gov" in url or "defense.gov" in url or "hhs.gov" in url or "energy.gov" in url or "interior.gov" in url: | |
| return "Federal Government" | |
| elif "weather.gov" in url or "metoffice.gov.uk" in url or "accuweather.com" in url or "weatherunderground.com" in url or "noaa.gov" in url or "wunderground.com" in url or "climate.gov" in url or "ecmwf.int" in url or "bom.gov.au" in url: | |
| return "Weather" | |
| elif "data.worldbank.org" in url or "imf.org" in url or "un.org" in url or "oecd.org" in url or "statista.com" in url or "kff.org" in url or "who.int" in url or "cdc.gov" in url or "bea.gov" in url or "census.gov" in url or "fdic.gov" in url: | |
| return "Data & Statistics" | |
| elif "nasa" in url or "spaceweatherlive" in url or "space" in url or "universetoday" in url or "skyandtelescope" in url or "esa" in url: | |
| return "Space" | |
| elif "sciencedaily" in url or "quantamagazine" in url or "smithsonianmag" in url or "popsci" in url or "discovermagazine" in url or "scientificamerican" in url or "newscientist" in url or "livescience" in url or "atlasobscura" in url: | |
| return "Science" | |
| elif "wired" in url or "techcrunch" in url or "arstechnica" in url or "gizmodo" in url or "theverge" in url: | |
| return "Tech" | |
| elif "horoscope" in url or "astrostyle" in url: | |
| return "Astrology" | |
| elif "cnn_allpolitics" in url or "bbci.co.uk/news/politics" in url or "reuters.com/arc/outboundfeeds/newsletter-politics" in url or "politico.com/rss/politics" in url or "thehill" in url: | |
| return "Politics" | |
| elif "weather" in url or "swpc.noaa.gov" in url or "foxweather" in url: | |
| return "Earth Weather" | |
| elif "vogue" in url: | |
| return "Lifestyle" | |
| elif "phys.org" in url or "aps.org" in url or "physicsworld" in url: | |
| return "Physics" | |
| return "Uncategorized" | |
| def process_and_store_articles(articles): | |
| documents = [] | |
| existing_ids = set(vector_db.get()["ids"]) # Get existing document IDs to avoid duplicates | |
| for article in articles: | |
| try: | |
| # Create a unique ID for deduplication | |
| doc_id = f"{article['title']}|{article['link']}|{article['published']}" | |
| if doc_id in existing_ids: | |
| continue # Skip if already in DB | |
| metadata = { | |
| "title": article["title"], | |
| "link": article["link"], | |
| "original_description": article["description"], | |
| "published": article["published"], | |
| "category": article["category"], | |
| "image": article["image"], | |
| } | |
| doc = Document(page_content=article["description"], metadata=metadata, id=doc_id) | |
| documents.append(doc) | |
| except Exception as e: | |
| logger.error(f"Error processing article {article['title']}: {e}") | |
| if documents: | |
| try: | |
| vector_db.add_documents(documents) | |
| vector_db.persist() # Explicitly persist changes | |
| logger.info(f"Added {len(documents)} new articles to DB") | |
| except Exception as e: | |
| logger.error(f"Error storing articles: {e}") | |
| def download_from_hf_hub(): | |
| # Only download if the local DB doesn’t exist (initial setup) | |
| if not os.path.exists(LOCAL_DB_DIR): | |
| try: | |
| hf_api.create_repo(repo_id=REPO_ID, repo_type="dataset", exist_ok=True, token=HF_API_TOKEN) | |
| logger.info(f"Downloading Chroma DB from {REPO_ID}...") | |
| hf_api.download_repo(repo_id=REPO_ID, repo_type="dataset", local_dir=LOCAL_DB_DIR, token=HF_API_TOKEN) | |
| except Exception as e: | |
| logger.error(f"Error downloading from Hugging Face Hub: {e}") | |
| raise | |
| else: | |
| logger.info("Local Chroma DB already exists, skipping download.") | |
| def upload_to_hf_hub(): | |
| if os.path.exists(LOCAL_DB_DIR): | |
| try: | |
| logger.info(f"Uploading updated Chroma DB to {REPO_ID}...") | |
| for root, _, files in os.walk(LOCAL_DB_DIR): | |
| for file in files: | |
| local_path = os.path.join(root, file) | |
| remote_path = os.path.relpath(local_path, LOCAL_DB_DIR) | |
| hf_api.upload_file( | |
| path_or_fileobj=local_path, | |
| path_in_repo=remote_path, | |
| repo_id=REPO_ID, | |
| repo_type="dataset", | |
| token=HF_API_TOKEN | |
| ) | |
| logger.info(f"Database uploaded to: {REPO_ID}") | |
| except Exception as e: | |
| logger.error(f"Error uploading to Hugging Face Hub: {e}") | |
| raise | |
| if __name__ == "__main__": | |
| articles = fetch_rss_feeds() | |
| process_and_store_articles(articles) | |
| upload_to_hf_hub() |