fetch_paper.py

from parser import parse_article
import os
import requests
import datetime
import hashlib
import json


API_URL = "https://huggingface.co./api/daily_papers"

cache = {}


def make_request(url: str):
    # Create a hash of the URL to use as the cache key
    url_hash = hashlib.md5(url.encode()).hexdigest()

    # Check if the response is already cached
    if url_hash in cache:
        print(f"Cache hit for URL: {url}")
        return cache[url_hash]

    http_proxy = os.getenv("HF_HTTP_PROXY")
    https_proxy = os.getenv("HF_HTTPS_PROXY")
    proxies = {
        "http": http_proxy,
        "https": https_proxy
    } if http_proxy or https_proxy else None

    attempts = 0
    while attempts < 3:
        try:
            response = requests.get(url, proxies=proxies)
            response.raise_for_status()
            data = response.json()

            # Cache the response
            cache[url_hash] = data

            return data
        except requests.RequestException as e:
            attempts += 1
            print(f"Attempt {attempts} failed: {e}")
            if attempts == 3:
                return []


def fetch_papers():
    data = make_request(API_URL)
    return [parse_article(item) for item in data]


def fetch_papers_with_date(date: datetime):
    formatted_date = date.strftime("%Y-%m-%d")
    data = make_request(API_URL + "?date=" + formatted_date)
    return [parse_article(item) for item in data]


def fetch_papers_with_daterange(start_date: datetime, end_date: datetime):
    # return []
    # 每天的数据都是独立的，所以只需要遍历日期范围即可
    articles = []
    current_date = start_date
    while current_date <= end_date:
        print(current_date)
        articles.extend(fetch_papers_with_date(current_date))
        print(f"Total articles: {len(articles)}")
        current_date += datetime.timedelta(days=1)

    # 根据每个文章的.paper.id去重
    unique_articles = {}
    for article in articles:
        if article.paper.id not in unique_articles:
            unique_articles[article.paper.id] = article

    return list(unique_articles.values())


if __name__ == "__main__":
    from rich import print
    start_date = datetime.datetime(2024, 1, 28)
    end_date = datetime.datetime(2024, 1, 30)
    articles = fetch_papers_with_daterange(start_date=start_date, end_date=end_date)
    # print(articles)
    print(f"Total articles: {len(articles)}")